Move

* Update sophia_stdlib.md

add more precise description of oracle TTLs

* Update sophia_stdlib.md

.circleci/config.yml

@@ -0,0 +1,53 @@
+version: 2.1
+
+executors:
+  aebuilder:
+    docker:
+      - image: aeternity/builder:xenial-otp21
+        user: builder
+    working_directory: ~/aesophia
+
+jobs:
+  verify_rebar_lock:
+    executor: aebuilder
+    steps:
+      - checkout
+      - run:
+          name: Ensure lock file is up-to-date
+          command: |
+            ./rebar3 upgrade
+            git diff --quiet -- rebar.lock || (echo "rebar.lock is not up-to-date" && exit 1)
+  build:
+    executor: aebuilder
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - dialyzer-cache-v2-{{ .Branch }}-{{ .Revision }}
+            - dialyzer-cache-v2-{{ .Branch }}-
+            - dialyzer-cache-v2-
+      - run:
+          name: Build
+          command: ./rebar3 compile
+      - run:
+          name: Static Analysis
+          command: ./rebar3 dialyzer
+      - run:
+          name: Eunit
+          command: ./rebar3 eunit
+      - run:
+          name: Common Tests
+          command: ./rebar3 ct
+      - save_cache:
+          key: dialyzer-cache-v2-{{ .Branch }}-{{ .Revision }}
+          paths:
+            - _build/default/rebar3_20.3.8_plt
+      - store_artifacts:
+          path: _build/test/logs
+
+workflows:
+  version: 2
+  build_test:
+    jobs:
+      - build
+      - verify_rebar_lock

.docssite/hook.py

@@ -0,0 +1,7 @@
+import glob
+import shutil
+
+def pre_build(**kwargs):
+  for file in glob.glob('../docs/*.md'):
+    shutil.copy(file, 'docs')
+  shutil.copy('../CHANGELOG.md', 'docs')

.docssite/mkdocs.yml

@@ -0,0 +1,55 @@
+site_name: æternity Sophia Language
+plugins:
+  - search
+  - mkdocs-simple-hooks:
+      hooks:
+        on_pre_build: 'hook:pre_build'
+repo_url: 'https://github.com/aeternity/aesophia'
+edit_uri: ''
+
+extra:
+  version:
+    provider: mike
+
+theme:
+  favicon: favicon.png
+  name: material
+  custom_dir: overrides
+  language: en
+  palette:
+    - scheme: default
+      primary: pink
+      accent: pink
+      toggle:
+        icon: material/weather-night
+        name: Switch to dark mode
+    - scheme: slate
+      primary: pink
+      accent: pink
+      toggle:
+        icon: material/weather-sunny
+        name: Switch to light mode
+  features:
+    - content.tabs.link
+    - search.highlight
+    - search.share
+    - search.suggest
+
+  # Don't include MkDocs' JavaScript
+  include_search_page: false
+  search_index_only: true
+
+markdown_extensions:
+  - admonition
+  - pymdownx.highlight
+  - pymdownx.superfences
+  - toc:
+      toc_depth: 3
+
+nav:
+  - Introduction: index.md
+  - Syntax: sophia_syntax.md
+  - Features: sophia_features.md
+  - Standard library: sophia_stdlib.md
+  - Contract examples: sophia_examples.md
+  - Changelog: CHANGELOG.md

.docssite/overrides/main.html

@@ -0,0 +1,8 @@
+{% extends "base.html" %}
+
+{% block outdated %}
+  You're not viewing the latest version.
+  <a href="{{ '../' ~ base_url }}">
+    <strong>Click here to go to latest.</strong>
+  </a>
+{% endblock %}

.github/workflows/docs-develop.yml

@@ -0,0 +1,25 @@
+name: Publish development docs
+on:
+  push:
+    branches: ['master']
+      
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip3
+          key: ${{ runner.os }}-pip-${{ hashFiles('.github/workflows/requirements.txt') }}
+      - run: pip3 install -r .github/workflows/requirements.txt -U
+      - run: git config --global user.email "github-action@users.noreply.github.com"
+      - run: git config --global user.name "GitHub Action"
+      - run: |
+          cd .docssite
+          mike deploy --push master

.github/workflows/docs-release.yml

@@ -0,0 +1,26 @@
+name: Publish release docs
+on:
+  release:
+    types: [released]
+      
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip3
+          key: ${{ runner.os }}-pip-${{ hashFiles('.github/workflows/requirements.txt') }}
+      - run: pip3 install -r .github/workflows/requirements.txt -U
+      - run: git config --global user.email "github-action@users.noreply.github.com"
+      - run: git config --global user.name "GitHub Action"
+      - run: echo "RELEASE_VERSION=${GITHUB_REF:10}" >> $GITHUB_ENV
+      - run: |
+          cd .docssite
+          mike deploy --push --update-aliases $RELEASE_VERSION latest

.github/workflows/requirements.txt

@@ -0,0 +1,5 @@
+mkdocs==1.2.4
+mkdocs-simple-hooks==0.1.3
+mkdocs-material==7.1.9
+mike==1.0.1
+pygments==2.11.2

.gitignore

@@ -0,0 +1,26 @@
+.rebar3
+_[^_]*
+.eunit
+*.o
+*.beam
+*.plt
+*.swp
+*.swo
+.erlang.cookie
+ebin
+log
+erl_crash.dump
+.rebar
+logs
+_build
+.idea
+*.iml
+rebar3.crashdump
+*.erl~
+*.aes~
+aesophia
+.qcci
+current_counterexample.eqc
+test/contracts/test.aes
+__pycache__
+.docssite/docs/*.md

CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+### Added
+- Compiler warnings for the follwing: shadowing, negative spends, division by zero, unused functions, unused includes, unused stateful annotations, unused variables, unused parameters, unused user-defined type, dead return value.
+- The pipe operator |>
+  ```
+  [1, 2, 3] |> List.first |> Option.is_some  // Option.is_some(List.first([1, 2, 3]))
+  ```
+- Allow binary operators to be used as lambdas
+  ```
+  function sum(l : list(int)) : int = foldl((+), 0, l)
+  function logical_and(x, y) = (&&)(x, y)
+  ```
+### Changed
+- Error messages have been restructured (less newlines) to provide more unified errors. Also `pp_oneline/1` has been added.
+- Ban empty record definitions (e.g. `record r = {}` would give an error).
+### Removed
+- Support for AEVM has been entirely wiped
+
+## [6.1.0] - 2021-10-20
+### Added
+- `Bitwise` stdlib
+- `Set` stdlib
+- `Option.force_msg`
+- Loading namespaces into the current scope (e.g. `using Pair`)
+- Assign patterns to variables (e.g. `let x::(t = y::_) = [1, 2, 3, 4]` where `t == [2, 3, 4]`)
+- Add builtin types (`AENS.name, AENS.pointee, Chain.ttl, Chain.base_tx, Chain.ga_meta_tx, Chain.paying_for_tx`) to
+  the calldata and result decoder
+- Patterns guards
+  ```
+  switch(x)
+    a::[] | a > 10 => 1
+    _              => 2
+  ```
+  ```
+  function
+    f(a::[]) | a > 10 = 1
+    f(_)              = 2
+  ```
+### Changed
+- Fixed the ACI renderer, it shouldn't drop the `stateful` modifier
+
+## [6.0.2] 2021-07-05
+### Changed
+- `List.from_to_step` now forbids non-positive step (this change does
+  *not* alter the behavior of the previously deployed contracts)
+- Fixed leaking state between contracts
+
+## [6.0.1] 2021-06-24
+### Changed
+- Fixed a bug in calldata encoding for contracts containing multiple contracts
+- Fixed a missing `include` in the `Frac` standard library
+
+## [6.0.0] 2021-05-26
+### Added
+- Child contracts
+- `Chain.clone`
+- `Chain.create`
+- `Chain.bytecode_hash`
+- Minor support for variadic functions
+- `void` type that represents an empty type
+- `Call.fee` builtin
+### Changed
+- Contract interfaces must be now invocated by `contract interface` keywords
+- `main` keyword to indicate the main contract in case there are child contracts around
+- `List.sum` and `List.product` no longer use `List.foldl`
+### Removed
+
+## [5.0.0] 2021-04-30
+### Added
+- A new and improved [`String` standard library](https://github.com/aeternity/aesophia/blob/master/docs/sophia_stdlib.md#string)
+  has been added. Use it by `include "String.aes"`. It includes functions for
+  turning strings into lists of characters for detailed manipulation. For
+  example:
+  ```
+  include "String.aes"
+  contract C =
+    entrypoint filter_all_a(s: string) : string =
+      String.from_list(List.filter((c : char) => c != 'a', String.to_list(s)))
+  ```
+  will return a list with all `a`'s removed.
+
+  There are also convenience functions `split`, `concat`, `to_upper`,
+  `to_lower`, etc.
+
+  All String functions in FATEv2 operate on unicode code points.
+- Operations for pairing-based cryptography has been added the operations
+  are in the standard library [BLS12_381](https://github.com/aeternity/aesophia/blob/master/docs/sophia_stdlib.md#bls12_381).
+  With these operations it is possible to do Zero Knowledge-proofs, etc.
+  The operations are for the BLS12-381 curve (as the name suggests).
+- Calls to functions in other contracts (i.e. _remote calls_) can now be
+  [`protected`](https://github.com/aeternity/aesophia/blob/master/docs/sophia.md#protected-contract-calls).
+  If a contract call fails for any reason (for instance, the remote contract
+  crashes or runs out of gas, or the entrypoint doesn't exist or has the
+  wrong type) the parent call also fails. To make it possible to recover
+  from failures, contract calls takes a named argument `protected : bool`
+  (default `false`).
+
+  If `protected = true` the result of the contract call is wrapped in an
+  `option`, and `Some(value)` indicates a succesful execution and `None`
+  indicates that the contract call failed. Note: any gas consumed until
+  the failure is still charged, but all side effects in the remote
+  contract are rolled back on failure.
+- A new chain operation [`AENS.update`](https://github.com/aeternity/aesophia/blob/master/docs/sophia.md#aens-interface)
+  is supported.
+- New chain exploring operations `AENS.lookup` and `Oracle.expiry` to
+  look up an AENS record and the expiry of an Oracle respectively, are added.
+- Transaction introspection (`Auth.tx`) has been added. When a Generalized
+  account is authorized, the authorization function needs access to the
+  transaction (and the transaction hash) for the wrapped transaction. The
+  transaction and the transaction hash is available `Auth.tx`, it is only
+  available during authentication if invoked by a normal contract call
+  it returns `None`. Example:
+  ```
+  switch(Auth.tx)
+    None      => abort("Not in Auth context")
+    Some(tx0) =>
+      switch(tx0.tx)
+        Chain.SpendTx(_, amount, _)  => amount > 400
+        Chain.ContractCallTx(_, _)   => true
+        _                            => false
+  ```
+- A debug mode is a added to the compiler. Right now its only use is to
+  turn off hermetization.
+### Changed
+- The function `Chain.block_hash(height)` is now (in FATEv2) defined for
+  the current height - this used to be an error.
+- Standard library: Sort is optimized to do `mergesort` and a `contains`
+  function is added.
+- Improved type errors and explicit errors for some syntax errors (empty code
+  blocks, etc.).
+- Compiler optimization: The ACI is generated alongside bytecode. This means
+  that multiple compiler passes can be avoided.
+- Compiler optimization: Improved parsing (less stack used when transpiled).
+- A bug where constraints were handled out of order fixed.
+- Fixed calldata decoding for singleton records.
+- Improved the documentation w.r.t. signatures, especially stressing the fact that
+  the network ID is a part of what is signed.
+### Removed
+
+## [4.3.0]
+### Added
+- Added documentation (moved from `protocol`)
+- `Frac.aes` – library for rational numbers
+- Added some more meaningful error messages
+- Exported several parsing functionalities
+ - With option `keep_included` it is possible to see which files were included during the parse
+ - There is a function `run_parser` that be used to evaluate any parsing rule
+ - Exported parsers: `body`, `type` and `decl`
+### Changed
+- Performance improvements in the standard library
+- Fixed ACI encoder to handle `-` unary operator
+- Fixed including by absolute path
+- Fixed variant type printing in the ACI error messages
+- Fixed pretty printing of combined function clauses
+### Removed
+- `let` definitions are no longer supported in the toplevel of the contract
+- type declarations are no longer supported
+
+## [4.2.0] - 2020-01-15
+### Added
+- Allow separate entrypoint/function type signature and definition, and pattern
+  matching in left-hand sides:
+  ```
+    function
+      length : list('a) => int
+      length([])      = 0
+      length(x :: xs) = 1 + length(xs)
+  ```
+- Allow pattern matching in list comprehension generators (filtering out match
+  failures):
+  ```
+    function somes(xs : list(option('a))) : list('a) =
+      [ x | Some(x) <- xs ]
+  ```
+- Allow pattern matching in let-bindings (aborting on match failures):
+  ```
+    function test(m : map(int, int)) =
+        let Some(x) = Map.lookup(m, 0)
+        x
+  ```
+### Changed
+- FATE code generator improvements.
+- Bug fix: Handle qualified constructors in patterns.
+- Bug fix: Allow switching also on negative numbers.
+### Removed
+
+## [4.1.0] - 2019-11-26
+### Added
+- Support encoding and decoding bit fields in call arguments and results.
+### Changed
+- Various improvements to FATE code generator.
+### Removed
+
+## [4.0.0] - 2019-10-11
+### Added
+- `Address.to_contract` - casts an address to a (any) contract type.
+- Pragma to check compiler version, e.g. `@compiler >= 4.0`.
+- Handle numeric escapes, i.e. `"\x19Ethereum Signed Message:\n"`, and similar strings.
+- `Bytes.concat` and `Bytes.split` are added to be able to
+  (de-)construct byte arrays.
+- `[a..b]` language construct, returning the list of numbers between
+  `a` and `b` (inclusive). Returns the empty list if `a` > `b`.
+- [Standard libraries](https://github.com/aeternity/aesophia/blob/master/docs/sophia_stdlib.md)
+- Checks that `init` is not called from other functions.
+- FATE backend - the compiler is able to produce VM code for both `AEVM` and `FATE`. Many
+  of the APIs now take `{backend, aevm | fate}` to decide wich backend to produce artifacts
+  for.
+- New builtin functions `Crypto.ecrecover_secp256k1: (hash, bytes(65)) => option(bytes(20))`
+  and `Crypto.ecverify_secp256k1 : (hash, bytes(20), bytes(65)) => bool` for recovering
+  and verifying an Ethereum address for a message hash and a signature.
+- Sophia supports list comprehensions known from languages like Python, Haskell or Erlang.
+  Example syntax:
+```
+[x + y | x <- [1,2,3,4,5], let k = x*x, if (k > 5), y <- [k, k+1, k+2]]
+// yields [12,13,14,20,21,22,30,31,32]
+```
+- A new contract, and endpoint, modifier `payable` is introduced. Contracts, and enpoints,
+  that shall be able to receive funds should be marked as payable. `Address.is_payable(a)`
+  can be used to check if an (contract) address is payable or not.
+### Changed
+- Nice type error if contract function is called as from a namespace.
+- Fail on function definitions in contracts other than the main contract.
+- Bug fix in variable optimization - don't discard writes to the store/state.
+- Bug fixes in error reporting.
+- Bug fix in variable liveness analysis for FATE.
+- Error messages are changed into a uniform format, and more helpful
+  messages have been added.
+- `Crypto.<hash_fun>` and `String.<hash_fun>` for byte arrays now only
+  hash the actual byte array - not the internal ABI format.
+- More strict checks for polymorphic oracles and higher order oracles
+  and entrypoints.
+- `AENS.claim` is updated with a `NameFee` field - to be able to do
+  name auctions within contracts.
+- Fixed a bug in `Bytes.to_str` for AEVM.
+- New syntax for tuple types. Now 0-tuple type is encoded as `unit` instead of `()` and
+  regular tuples are encoded by interspersing inner types with `*`, for instance `int * string`.
+  Parens are not necessary. Note it only affects the types, values remain as their were before,
+  so `(1, "a") : int * string`
+- The `AENS.transfer` and `AENS.revoke` functions have been updated to take a name `string`
+  instead of a name `hash`.
+- Fixed a bug where the `AEVM` backend complained about a missing `init` function when
+  trying to generate calldata from an ACI-generated interface.
+- Compiler now returns the ABI-version in the compiler result map.
+- Renamed `Crypto.ecverify` and `Crypto.ecverify_secp256k1` into `Crypto.verify_sig` and
+  `Crypto.verify_sig_secp256k1` respectively.
+### Removed
+
+## [3.2.0] - 2019-06-28
+### Added
+- New builtin function `require : (bool, string) => ()`. Defined as
+    ```
+    function require(b, err) = if(!b) abort(err)
+    ```
+- New builtin functions
+    ```
+    Bytes.to_str : bytes(_) => string
+    Bytes.to_int : bytes(_) => int
+    ```
+  for converting a byte array to a hex string and interpreting it as a
+  big-endian encoded integer respectively.
+### Changed
+- Public contract functions must now be declared as *entrypoints*:
+  ```
+  contract Example =
+    // Exported
+    entrypoint exported_fun(x) = local_fun(x)
+    // Not exported
+    function local_fun(x) = x
+  ```
+  Functions in namespaces still use `function` (and `private function` for
+  private functions).
+- The return type of `Chain.block_hash(height)` has changed, it used to
+  be `int`, where `0` denoted an incorrect height. New return type is
+  `option(hash)`, where `None` represents an incorrect height.
+- Event name hashes now use BLAKE2b instead of Keccak256.
+- Fixed bugs when defining record types in namespaces.
+- Fixed a bug in include path handling when passing options to the compiler.
+### Removed
+
+## [3.1.0] - 2019-06-03
+### Added
+### Changed
+- Keyword `indexed` is now optional for word typed (`bool`, `int`, `address`,
+  ...) event arguments.
+- State variable pretty printing now produce `'a, 'b, ...` instead of `'1, '2, ...`.
+- ACI is restructured and improved:
+    - `state` and `event` types (if present) now appear at the top level.
+    - Namespaces and remote interfaces are no longer ignored.
+    - All type definitions are included in the interface rendering.
+    - API functions are renamed, new functions are `contract_interface`
+      and `render_aci_json`.
+- Fixed a bug in `create_calldata`/`to_sophia_value` - it can now handle negative
+  literals.
+### Removed
+
+## [3.0.0] - 2019-05-21
+### Added
+- `stateful` annotations are now properly enforced. Functions must be marked stateful
+  in order to update the state or spend tokens.
+- Primitives `Contract.creator`, `Address.is_contract`, `Address.is_oracle`,
+  `Oracle.check` and `Oracle.check_query` has been added to Sophia.
+- A byte array type `bytes(N)` has been added to generalize `hash (== bytes(32))` and
+  `signature (== bytes(64))` and allow for byte arrays of arbitrary fixed length.
+- `Crypto.ecverify_secp256k1` has been added.
+### Changed
+- Address literals (+ Oracle, Oracle query and remote contracts) have been changed
+  from `#<hex>` to address as `ak_<base58check>`, oracle `ok_<base58check>`,
+  oracle query `oq_<base58check>` and remote contract `ct_<base58check>`.
+- The compilation and typechecking of `letfun` (e.g. `let m(f, xs) = map(f, xs)`) was
+  not working properly and has been fixed.
+### Removed
+- `let rec` has been removed from the language, it has never worked.
+- The standalone CLI compiler is served in the repo `aeternity/aesophia_cli` and has
+  been completely removed from `aesophia`.
+
+## [2.1.0] - 2019-04-11
+### Added
+- Stubs (not yet wired up) for compilation to FATE
+- Add functions specific for Calldata decoding
+- Support for `Auth.tx_hash`, not available in AEVM until Fortuna release
+
+### Changed
+- Improvements to the ACI generator
+
+## [2.0.0] - 2019-03-11
+### Added
+- Add `Crypto.ecverify` to the compiler.
+- Add `Crypto.sha3`, `Crypto.blake2`, `Crypto.sha256`, `String.blake2` and
+  `String.sha256` to the compiler.
+- Add the `bits` type for working with bit fields in Sophia.
+- Add Namespaces to Sophia in order to simplify using library contracts, etc.
+- Add a missig type check on the `init` function - detects programmer errors earlier.
+- Add the ACI (Aeternity Contract Interface) generator.
+
+### Changed
+- Use native bit shift operations in builtin functions, reducing gas cost.
+- Improve type checking of `record` fields - generates more understandable error messages.
+- Improved, more coherent, error messages.
+- Simplify calldata creation - instead of passing a compiled contract, simply
+  pass a (stubbed) contract string.
+
+[Unreleased]: https://github.com/aeternity/aesophia/compare/v6.1.0...HEAD
+[6.1.0]: https://github.com/aeternity/aesophia/compare/v6.0.2...v6.1.0
+[6.0.2]: https://github.com/aeternity/aesophia/compare/v6.0.1...v6.0.2
+[6.0.1]: https://github.com/aeternity/aesophia/compare/v6.0.0...v6.0.1
+[6.0.0]: https://github.com/aeternity/aesophia/compare/v5.0.0...v6.0.0
+[5.0.0]: https://github.com/aeternity/aesophia/compare/v4.3.0...v5.0.0
+[4.3.0]: https://github.com/aeternity/aesophia/compare/v4.2.0...v4.3.0
+[4.2.0]: https://github.com/aeternity/aesophia/compare/v4.1.0...v4.2.0
+[4.1.0]: https://github.com/aeternity/aesophia/compare/v4.0.0...v4.1.0
+[4.0.0]: https://github.com/aeternity/aesophia/compare/v3.2.0...v4.0.0
+[3.2.0]: https://github.com/aeternity/aesophia/compare/v3.1.0...v3.2.0
+[3.1.0]: https://github.com/aeternity/aesophia/compare/v3.0.0...v3.1.0
+[3.0.0]: https://github.com/aeternity/aesophia/compare/v2.1.0...v3.0.0
+[2.1.0]: https://github.com/aeternity/aesophia/compare/v2.0.0...v2.1.0
+[2.0.0]: https://github.com/aeternity/aesophia/tag/v2.0.0

LICENSE

@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2017, æternity developers
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.

README.md

@@ -0,0 +1,34 @@
+# aesophia
+
+This is the __sophia__ compiler for the æternity system which compiles contracts written in __sophia__ to [FATE](https://github.com/aeternity/protocol/blob/master/contracts/fate.md) instructions.
+
+The compiler is currently being used three places
+ - [The command line compiler](https://github.com/aeternity/aesophia_cli)
+ - [The HTTP compiler](https://github.com/aeternity/aesophia_http)
+ - In [æternity node](https://github.com/aeternity/aeternity) tests
+
+## Documentation
+
+* [Introduction](docs/index.md)
+* [Syntax](docs/sophia_syntax.md)
+* [Features](docs/sophia_features.md)
+* [Standard library](docs/sophia_stdlib.md)
+* [Contract examples](docs/sophia_examples.md)
+
+Additionally you can check out the [contracts section](https://github.com/aeternity/protocol/blob/master/contracts/contracts.md) of the æternity blockchain specification.
+
+## Versioning
+
+Versioning should follow the [semantic versioning](https://semver.org/spec/v2.0.0) guidelines. Id est, given a version number MAJOR.MINOR.PATCH, increment the:
+
+- MAJOR version when you make incompatible API changes
+- MINOR version when you add functionality in a backwards compatible manner
+- PATCH version when you make backwards compatible bug fixes
+
+
+## Interface Modules
+
+The basic modules for interfacing the compiler:
+
+* [aeso_compiler: the Sophia compiler](docs/aeso_compiler.md)
+* [aeso_aci: the ACI interface](docs/aeso_aci.md)

docs/aeso_aci.md

@@ -0,0 +1,156 @@
+# aeso_aci
+
+### Module
+
+### aeso_aci
+
+The ACI interface encoder and decoder.
+
+### Description
+
+This module provides an interface to generate and convert between
+Sophia contracts and a suitable JSON encoding of contract
+interface. As yet the interface is very basic.
+
+Encoding this contract:
+
+```
+contract Answers =
+  record state = { a : answers }
+  type answers() = map(string, int)
+
+  stateful function init() = { a = {} }
+  private function the_answer() = 42
+  function new_answer(q : string, a : int) : answers() = { [q] = a }
+```
+
+generates the following JSON structure representing the contract interface:
+
+
+``` json
+{
+  "contract": {
+    "functions": [
+      {
+        "arguments": [],
+        "name": "init",
+        "returns": "Answers.state",
+        "stateful": true
+      },
+      {
+        "arguments": [
+          {
+            "name": "q",
+            "type": "string"
+          },
+          {
+            "name": "a",
+            "type": "int"
+          }
+        ],
+        "name": "new_answer",
+        "returns": {
+          "map": [
+            "string",
+            "int"
+          ]
+        },
+        "stateful": false
+      }
+    ],
+    "name": "Answers",
+    "state": {
+      "record": [
+        {
+          "name": "a",
+          "type": "Answers.answers"
+        }
+      ]
+    },
+    "type_defs": [
+      {
+        "name": "answers",
+        "typedef": {
+          "map": [
+            "string",
+            "int"
+          ]
+        },
+        "vars": []
+      }
+    ]
+  }
+}
+```
+
+When that encoding is decoded the following include definition is generated:
+
+```
+contract Answers =
+  record state = {a : Answers.answers}
+  type answers = map(string, int)
+  function init : () => Answers.state
+  function new_answer : (string, int) => map(string, int)
+```
+
+### Types
+```erlang
+-type aci_type()  :: json | string.
+-type json()      :: jsx:json_term().
+-type json_text() :: binary().
+```
+
+### Exports
+
+#### contract\_interface(aci\_type(), string()) -> {ok, json() | string()} | {error, term()}
+
+Generate the JSON encoding of the interface to a contract. The type definitions
+and non-private functions are included in the JSON string.
+
+#### render\_aci\_json(json() | json\_text()) -> string().
+
+Take a JSON encoding of a contract interface and generate a contract interface
+that can be included in another contract.
+
+### Example run
+
+This is an example of using the ACI generator from an Erlang shell. The file
+called `aci_test.aes` contains the contract in the description from which we
+want to generate files `aci_test.json` which is the JSON encoding of the
+contract interface and `aci_test.include` which is the contract definition to
+be included inside another contract.
+
+``` erlang
+1> {ok,Contract} = file:read_file("aci_test.aes").
+{ok,<<"contract Answers =\n  record state = { a : answers }\n  type answers() = map(string, int)\n\n  stateful function"...>>}
+2> {ok,JsonACI} = aeso_aci:contract_interface(json, Contract).
+{ok,[#{contract =>
+           #{functions =>
+                 [#{arguments => [],name => <<"init">>,
+                    returns => <<"Answers.state">>,stateful => true},
+                  #{arguments =>
+                        [#{name => <<"q">>,type => <<"string">>},
+                         #{name => <<"a">>,type => <<"int">>}],
+                    name => <<"new_answer">>,
+                    returns => #{<<"map">> => [<<"string">>,<<"int">>]},
+                    stateful => false}],
+             name => <<"Answers">>,
+             state =>
+                 #{record =>
+                       [#{name => <<"a">>,type => <<"Answers.answers">>}]},
+             type_defs =>
+                 [#{name => <<"answers">>,
+                    typedef => #{<<"map">> => [<<"string">>,<<"int">>]},
+                    vars => []}]}}]}
+3> file:write_file("aci_test.aci", jsx:encode(JsonACI)).
+ok
+4> {ok,InterfaceStub} = aeso_aci:render_aci_json(JsonACI).
+{ok,<<"contract Answers =\n  record state = {a : Answers.answers}\n  type answers = map(string, int)\n  function init "...>>}
+5> file:write_file("aci_test.include", InterfaceStub).
+ok
+6> jsx:prettify(jsx:encode(JsonACI)).
+<<"[\n  {\n    \"contract\": {\n      \"functions\": [\n        {\n          \"arguments\": [],\n          \"name\": \"init\",\n        "...>>
+```
+
+The final call to `jsx:prettify(jsx:encode(JsonACI))` returns the encoding in a
+more easily readable form. This is what is shown in the description above.

docs/aeso_compiler.md

@@ -0,0 +1,73 @@
+# aeso_compiler
+
+### Module
+
+### aeso_compiler
+
+The Sophia compiler
+
+### Description
+
+This module provides the interface to the standard Sophia compiler. It
+returns the compiled module in a map which can then be loaded.
+
+### Types
+``` erlang
+contract_string() = string() | binary()
+contract_map() = #{bytecode => binary(),
+                   compiler_version => binary(),
+                   contract_souce => string(),
+                   type_info => type_info()}
+type_info()
+errorstring() = binary()
+```
+### Exports
+
+#### file(File)
+#### file(File, Options) -> CompRet
+#### from_string(ContractString, Options) -> CompRet
+
+Types
+
+``` erlang
+ContractString = contract_string()
+Options = [Option]
+CompRet = {ok,ContractMap} | {error,ErrorString}
+ContractMap = contract_map()
+ErrorString = errorstring()
+```
+
+Compile a contract defined in a file or in a string.
+
+The **pp_** options all print to standard output the following:
+
+`pp_sophia_code` - print the input Sophia code.
+
+`pp_ast` - print the AST of the code
+
+`pp_types` - print information about the types
+
+`pp_typed_ast` - print the AST with type information at each node
+
+`pp_assembler` - print the generated assembler code
+
+#### check_call(ContractString, Options) -> CheckRet
+
+Types
+```
+ContractString = string() | binary()
+CheckRet = {ok,string(),{Types,Type | any()},Terms} | {error,Term}
+Types = [Type]
+Type = term()
+```
+Check a call in contract through the `__call` function.
+
+#### version() -> {ok, Version} | {error, term()}
+
+Types
+
+``` erlang
+Version = binary()
+```
+
+Get the current version of the Sophia compiler.

docs/index.md

@@ -0,0 +1,12 @@
+# Introduction
+Sophia is a functional language designed for smart contract development. It is strongly typed and has
+restricted mutable state.
+
+Sophia is customized for smart contracts, which can be published
+to a blockchain. Thus some features of conventional
+languages, such as floating point arithmetic, are not present in Sophia, and
+some [æternity blockchain](https://aeternity.com) specific primitives, constructions and types have been added.
+
+!!! Note
+    - For rapid prototyping of smart contracts check out [AEstudio](https://studio.aepps.com/)!
+    - For playing around and diving deeper into the language itself check out the [REPL](https://repl.aeternity.io/)!

docs/sophia.md

@@ -0,0 +1 @@
+This file has been moved [here](sophia_features.md)

docs/sophia_examples.md

@@ -0,0 +1,73 @@
+# Contract examples
+
+## Crowdfunding
+```sophia
+/*
+ * A simple crowd-funding example
+ */
+contract FundMe =
+
+  record spend_args = { recipient : address,
+                        amount    : int }
+
+  record state = { contributions : map(address, int),
+                   total         : int,
+                   beneficiary   : address,
+                   deadline      : int,
+                   goal          : int }
+
+  stateful function spend(args : spend_args) =
+    Chain.spend(args.recipient, args.amount)
+
+  entrypoint init(beneficiary, deadline, goal) : state =
+    { contributions = {},
+      beneficiary   = beneficiary,
+      deadline      = deadline,
+      total         = 0,
+      goal          = goal }
+
+  function is_contributor(addr) =
+    Map.member(addr, state.contributions)
+
+  stateful entrypoint contribute() =
+    if(Chain.block_height >= state.deadline)
+      spend({ recipient = Call.caller, amount = Call.value }) // Refund money
+      false
+    else
+      let amount =
+        switch(Map.lookup(Call.caller, state.contributions))
+          None    => Call.value
+          Some(n) => n + Call.value
+      put(state{ contributions[Call.caller] = amount,
+                 total @ tot = tot + Call.value })
+      true
+
+  stateful entrypoint withdraw() =
+    if(Chain.block_height < state.deadline)
+      abort("Cannot withdraw before deadline")
+    if(Call.caller == state.beneficiary)
+      withdraw_beneficiary()
+    elif(is_contributor(Call.caller))
+      withdraw_contributor()
+    else
+      abort("Not a contributor or beneficiary")
+
+  stateful function withdraw_beneficiary() =
+    require(state.total >= state.goal, "Project was not funded")
+    spend({recipient = state.beneficiary,
+           amount    = Contract.balance })
+
+  stateful function withdraw_contributor() =
+    if(state.total >= state.goal)
+      abort("Project was funded")
+    let to = Call.caller
+    spend({recipient = to,
+           amount    = state.contributions[to]})
+    put(state{ contributions @ c = Map.delete(to, c) })
+```
+
+## Repositories
+This is a list with repositories that include smart contracts written in Sophia:
+
+- [aepp-sophia-examples](https://github.com/aeternity/aepp-sophia-examples)
+    - A repository that contains lots of different examples. The functionality of these examples is - to some extent - also covered by tests written in JavaScript.

docs/sophia_features.md

@@ -0,0 +1,871 @@
+# Features
+## Contracts
+
+The main unit of code in Sophia is the *contract*.
+
+- A contract implementation, or simply a contract, is the code for a
+  smart contract and consists of a list of types, entrypoints and local
+  functions. Only the entrypoints can be called from outside the contract.
+- A contract instance is an entity living on the block chain (or in a state
+  channel). Each instance has an address that can be used to call its
+  entrypoints, either from another contract or in a call transaction.
+- A contract may define a type `state` encapsulating its local
+  state. When creating a new contract the `init` entrypoint is executed and the
+  state is initialized to its return value.
+
+The language offers some primitive functions to interact with the blockchain and contracts.
+Please refer to the [Chain](sophia_stdlib.md#chain), [Contract](sophia_stdlib.md#contract)
+and the [Call](sophia_stdlib.md#call) namespaces in the documentation.
+
+### Calling other contracts
+
+To call a function in another contract you need the address to an instance of
+the contract. The type of the address must be a contract type, which consists
+of a number of type definitions and entrypoint declarations. For instance,
+
+```sophia
+// A contract type
+contract interface VotingType =
+  entrypoint vote : string => unit
+```
+
+Now given contract address of type `VotingType` you can call the `vote`
+entrypoint of that contract:
+
+```sophia
+contract VoteTwice =
+  entrypoint voteTwice(v : VotingType, alt : string) =
+    v.vote(alt)
+    v.vote(alt)
+```
+
+Contract calls take two optional named arguments `gas : int` and `value : int`
+that lets you set a gas limit and provide tokens to a contract call. If omitted
+the defaults are no gas limit and no tokens. Suppose there is a fee for voting:
+
+```sophia
+  entrypoint voteTwice(v : VotingType, fee : int, alt : string) =
+    v.vote(value = fee, alt)
+    v.vote(value = fee, alt)
+```
+
+Named arguments can be given in any order.
+
+Note that reentrant calls are not permitted. In other words, when calling
+another contract it cannot call you back (directly or indirectly).
+
+To construct a value of a contract type you can give a contract address literal
+(for instance `ct_2gPXZnZdKU716QBUFKaT4VdBZituK93KLvHJB3n4EnbrHHw4Ay`), or
+convert an account address to a contract address using `Address.to_contract`.
+Note that if the contract does not exist, or it doesn't have the entrypoint, or
+the type of the entrypoint does not match the stated contract type, the call
+fails.
+
+To recover the underlying `address` of a contract instance there is a field
+`address : address`. For instance, to send tokens to the voting contract (given that it is payable)
+without calling it you can write
+
+```sophia
+  entrypoint pay(v : VotingType, amount : int) =
+    Chain.spend(v.address, amount)
+```
+
+### Protected contract calls
+
+If a contract call fails for any reason (for instance, the remote contract
+crashes or runs out of gas, or the entrypoint doesn't exist or has the wrong
+type) the parent call also fails. To make it possible to recover from failures,
+contract calls takes a named argument `protected : bool` (default `false`).
+
+The protected argument must be a literal boolean, and when set to `true`
+changes the type of the contract call, wrapping the result in an `option` type.
+If the call fails the result is `None`, otherwise it's `Some(r)` where `r` is
+the return value of the call.
+
+```sophia
+contract interface VotingType =
+  entrypoint : vote : string => unit
+
+contract Voter =
+  entrypoint tryVote(v : VotingType, alt : string) =
+    switch(v.vote(alt, protected = true) : option(unit))
+      None    => "Voting failed"
+      Some(_) => "Voting successful"
+```
+
+Any gas that was consumed by the contract call before the failure stays
+consumed, which means that in order to protect against the remote contract
+running out of gas it is necessary to set a gas limit using the `gas` argument.
+However, note that errors that would normally consume all the gas in the
+transaction still only uses up the gas spent running the contract.
+
+Any side effects (state change, token transfers, etc.) made by a failing
+protected call is rolled back, just like they would be in the unprotected case.
+
+
+### Contract factories and child contracts
+
+Since the version 6.0.0 Sophia supports deploying contracts by other
+contracts. This can be done in two ways:
+
+- Contract cloning via [`Chain.clone`](sophia_stdlib.md#clone)
+- Direct deploy via [`Chain.create`](sophia_stdlib.md#create)
+
+These functions take variable number of arguments that must match the created
+contract's `init` function. Beside that they take some additional named
+arguments – please refer to their documentation for the details.
+
+While `Chain.clone` requires only a `contract interface` and a living instance
+of a given contract on the chain, `Chain.create` needs a full definition of a
+to-create contract defined by the standard `contract` syntax, for example
+
+```sophia
+contract IntHolder =
+  type state = int
+  entrypoint init(x) = x
+  entrypoint get() = state
+
+main contract IntHolderFactory =
+  stateful entrypoint new(x : int) : IntHolder =
+    let ih = Chain.create(x) : IntHolder
+    ih
+```
+
+In case of a presence of child contracts (`IntHolder` in this case), the main
+contract must be pointed out with the `main` keyword as shown in the example.
+
+
+## Mutable state
+
+Sophia does not have arbitrary mutable state, but only a limited form of state
+associated with each contract instance.
+
+- Each contract defines a type `state` encapsulating its mutable state.
+  The type `state` defaults to the `unit`.
+- The initial state of a contract is computed by the contract's `init`
+  function. The `init` function is *pure* and returns the initial state as its
+  return value.
+  If the type `state` is `unit`, the `init` function defaults to returning the value `()`.
+  At contract creation time, the `init` function is executed and
+  its result is stored as the contract state.
+- The value of the state is accessible from inside the contract
+  through an implicitly bound variable `state`.
+- State updates are performed by calling a function `put : state => unit`.
+- Aside from the `put` function (and similar functions for transactions
+  and events), the language is purely functional.
+- Functions modifying the state need to be annotated with the `stateful` keyword (see below).
+
+To make it convenient to update parts of a deeply nested state Sophia
+provides special syntax for map/record updates.
+
+### Stateful functions
+
+Top-level functions and entrypoints must be annotated with the
+`stateful` keyword to be allowed to affect the state of the running contract.
+For instance,
+
+```sophia
+  stateful entrypoint set_state(s : state) =
+    put(s)
+```
+
+Without the `stateful` annotation the compiler does not allow the call to
+`put`. A `stateful` annotation is required to
+
+* Use a stateful primitive function. These are
+  - `put`
+  - `Chain.spend`
+  - `Oracle.register`
+  - `Oracle.query`
+  - `Oracle.respond`
+  - `Oracle.extend`
+  - `AENS.preclaim`
+  - `AENS.claim`
+  - `AENS.transfer`
+  - `AENS.revoke`
+  - `AENS.update`
+* Call a `stateful` function in the current contract
+* Call another contract with a non-zero `value` argument.
+
+A `stateful` annotation *is not* required to
+
+* Read the contract state.
+* Issue an event using the `event` function.
+* Call another contract with `value = 0`, even if the called function is stateful.
+
+## Payable
+
+### Payable contracts
+
+A concrete contract is by default *not* payable. Any attempt at spending to such
+a contract (either a `Chain.spend` or a normal spend transaction) will fail. If a
+contract shall be able to receive funds in this way it has to be declared `payable`:
+
+```sophia
+// A payable contract
+payable contract ExampleContract =
+  stateful entrypoint do_stuff() = ...
+```
+
+If in doubt, it is possible to check if an address is payable using
+`Address.is_payable(addr)`.
+
+### Payable entrypoints
+
+A contract entrypoint is by default *not* payable. Any call to such a function
+(either a [Remote call](#calling-other-contracts) or a contract call transaction)
+that has a non-zero `value` will fail. Contract entrypoints that should be called
+with a non-zero value should be declared `payable`.
+
+```sophia
+payable stateful entrypoint buy(to : address) =
+  if(Call.value > 42)
+    transfer_item(to)
+  else
+    abort("Value too low")
+```
+
+## Namespaces
+
+Code can be split into libraries using the `namespace` construct. Namespaces
+can appear at the top-level and can contain type and function definitions, but
+not entrypoints. Outside the namespace you can refer to the (non-private) names
+by qualifying them with the namespace (`Namespace.name`).
+For example,
+
+```sophia
+namespace Library =
+  type number = int
+  function inc(x : number) : number = x + 1
+
+contract MyContract =
+  entrypoint plus2(x) : Library.number =
+    Library.inc(Library.inc(x))
+```
+
+Functions in namespaces have access to the same environment (including the
+`Chain`, `Call`, and `Contract`, builtin namespaces) as function in a contract,
+with the exception of `state`, `put` and `Chain.event` since these are
+dependent on the specific state and event types of the contract.
+
+To avoid mentioning the namespace every time it is used, Sophia allows
+including the namespace in the current scope with the `using` keyword:
+```
+include "Pair.aes"
+using Pair
+contract C =
+  type state = int
+  entrypoint init() =
+    let p = (1, 2)
+    fst(p)  // this is the same as Pair.fst(p)
+```
+
+It is also possible to make an alias for the namespace with the `as` keyword:
+```
+include "Pair.aes"
+contract C =
+  using Pair as P
+  type state = int
+  entrypoint init() =
+    let p = (1, 2)
+    P.fst(p)  // this is the same as Pair.fst(p)
+```
+
+Having the same alias for multiple namespaces is possible and it allows
+referening functions that are defined in different namespaces and have
+different names with the same alias:
+```
+namespace Xa = function f() = 1
+namespace Xb = function g() = 2
+contract Cntr =
+  using Xa as A
+  using Xb as A
+  type state = int
+  entrypoint init() = A.f() + A.g()
+```
+
+Note that using functions with the same name would result in an ambiguous name
+error:
+```
+namespace Xa = function f() = 1
+namespace Xb = function f() = 2
+contract Cntr =
+  using Xa as A
+  using Xb as A
+  type state = int
+
+  // the next line has an error because f is defined in both Xa and Xb
+  entrypoint init() = A.f()
+```
+
+Importing specific parts of a namespace or hiding these parts can also be
+done like this:
+```
+using Pair for [fst, snd]       // this will only import fst and snd
+using Triple hiding [fst, snd]  // this will import everything except for fst and snd
+```
+
+Note that it is possible to use a namespace in the top level of the file, in the
+contract level, namespace level, or in the function level.
+
+## Splitting code over multiple files
+
+Code from another file can be included in a contract using an `include`
+statement. These must appear at the top-level (outside the main contract). The
+included file can contain one or more namespaces and abstract contracts. For
+example, if the file `library.aes` contains
+
+```sophia
+namespace Library =
+  function inc(x) = x + 1
+```
+
+you can use it from another file using an `include`:
+
+```sophia
+include "library.aes"
+contract MyContract =
+  entrypoint plus2(x) = Library.inc(Library.inc(x))
+```
+
+This behaves as if the contents of `library.aes` was textually inserted into
+the file, except that error messages will refer to the original source
+locations. The language will try to include each file at most one time automatically,
+so even cyclic includes should be working without any special tinkering.
+
+## Standard library
+
+Sophia offers [standard library](sophia_stdlib.md) which exposes some
+primitive operations and some higher level utilities. The builtin
+namespaces like `Chain`, `Contract`, `Map`
+are included by default and are supported internally by the compiler.
+Others like `List`, `Frac`, `Option` need to be manually included using the
+`include` directive. For example
+```sophia
+include "List.aes"
+include "Pair.aes"
+-- Map is already there!
+
+namespace C =
+  entrypoint keys(m : map('a, 'b)) : list('a) =
+    List.map(Pair.fst, (Map.to_list(m)))
+```
+
+## Types
+Sophia has the following types:
+
+| Type                 | Description                                                                                 | Example                                                      |
+|----------------------|---------------------------------------------------------------------------------------------|--------------------------------------------------------------|
+| int                  | A 2-complement integer                                                                      | ```-1```                                                     |
+| address              | æternity address, 32 bytes                                                                 | ```Call.origin```                                            |
+| bool                 | A Boolean                                                                                   | ```true```                                                   |
+| bits                 | A bit field                                                                                 | ```Bits.none```                                              |
+| bytes(n)             | A byte array with `n` bytes                                                                 | ```#fedcba9876543210```                                      |
+| string               | An array of bytes                                                                           | ```"Foo"```                                                  |
+| list                 | A homogeneous immutable singly linked list.                                                 | ```[1, 2, 3]```                                              |
+| ('a, 'b) => 'c       | A function. Parentheses can be skipped if there is only one argument                        | ```(x : int, y : int) => x + y```                            |
+| tuple                | An ordered heterogeneous array                                                              | ```(42, "Foo", true)```                                      |
+| record               | An immutable key value store with fixed key names and typed values                          | ``` record balance = { owner: address, value: int } ```      |
+| map                  | An immutable key value store with dynamic mapping of keys of one type to values of one type | ```type accounts = map(string, address)```                   |
+| option('a)           | An optional value either None or Some('a)                                                   | ```Some(42)```                                               |
+| state                | A user defined type holding the contract state                                              | ```record state = { owner: address, magic_key: bytes(4) }``` |
+| event                | An append only list of blockchain events (or log entries)                                   | ```datatype event = EventX(indexed int, string)```           |
+| hash                 | A 32-byte hash - equivalent to `bytes(32)`                                                  |                                                              |
+| signature            | A signature - equivalent to `bytes(64)`                                                     |                                                              |
+| Chain.ttl            | Time-to-live (fixed height or relative to current block)                                    | ```FixedTTL(1050)``` ```RelativeTTL(50)```                   |
+| oracle('a, 'b)       | And oracle answering questions of type 'a with answers of type 'b                           | ```Oracle.register(acct, qfee, ttl)```                       |
+| oracle_query('a, 'b) | A specific oracle query                                                                     | ```Oracle.query(o, q, qfee, qttl, rttl)```                   |
+| contract             | A user defined, typed, contract address                                                     | ```function call_remote(r : RemoteContract) = r.fun()```     |
+
+## Literals
+| Type                 | Constant/Literal example(s)                                                                                                         |
+| ----------           | -------------------------------                                                                                                     |
+| int                  | `-1`, `2425`, `4598275923475723498573485768`                                                                                        |
+| address              | `ak_2gx9MEFxKvY9vMG5YnqnXWv1hCsX7rgnfvBLJS4aQurustR1rt`                                                                             |
+| bool                 | `true`, `false`                                                                                                                     |
+| bits                 | `Bits.none`, `Bits.all`                                                                                                             |
+| bytes(8)             | `#fedcba9876543210`                                                                                                                 |
+| string               | `"This is a string"`                                                                                                                |
+| list                 | `[1, 2, 3]`, `[(true, 24), (false, 19), (false, -42)]`                                                                              |
+| tuple                | `(42, "Foo", true)`                                                                                                                 |
+| record               | `{ owner = Call.origin, value = 100000000 }`                                                                                        |
+| map                  | `{["foo"] = 19, ["bar"] = 42}`, `{}`                                                                                                |
+| option(int)          | `Some(42)`, `None`                                                                                                                  |
+| state                | `state{ owner = Call.origin, magic_key = #a298105f }`                                                                               |
+| event                | `EventX(0, "Hello")`                                                                                                                |
+| hash                 | `#000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f`                                                                 |
+| signature            | `#000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f` |
+| Chain.ttl            | `FixedTTL(1050)`, `RelativeTTL(50)`                                                                                                 |
+| oracle('a, 'b)       | `ok_2YNyxd6TRJPNrTcEDCe9ra59SVUdp9FR9qWC5msKZWYD9bP9z5`                                                                             |
+| oracle_query('a, 'b) | `oq_2oRvyowJuJnEkxy58Ckkw77XfWJrmRgmGaLzhdqb67SKEL1gPY`                                                                             |
+| contract             | `ct_Ez6MyeTMm17YnTnDdHTSrzMEBKmy7Uz2sXu347bTDPgVH2ifJ`                                                                              |
+
+## Arithmetic
+
+Sophia integers (`int`) are represented by arbitrary-sized signed words and support the following
+arithmetic operations:
+- addition (`x + y`)
+- subtraction (`x - y`)
+- multiplication (`x * y`)
+- division (`x / y`), truncated towards zero
+- remainder (`x mod y`), satisfying `y * (x / y) + x mod y == x` for non-zero `y`
+- exponentiation (`x ^ y`)
+
+All operations are *safe* with respect to overflow and underflow. 
+The division and modulo operations throw an arithmetic error if the
+right-hand operand is zero.
+
+## Bit fields
+
+Sophia integers do not support bit arithmetic. Instead there is a separate
+type `bits`. See the standard library [documentation](sophia_stdlib.md#bits).
+
+A bit field can be of arbitrary size (but it is still represented by the
+corresponding integer, so setting very high bits can be expensive).
+
+## Type aliases
+
+Type aliases can be introduced with the `type` keyword and can be
+parameterized. For instance
+
+```sophia
+type number = int
+type string_map('a) = map(string, 'a)
+```
+
+A type alias and its definition can be used interchangeably. Sophia does not support
+higher-kinded types, meaning that following type alias is invalid: `type wrap('f, 'a) = 'f('a)`
+
+## Algebraic data types
+
+Sophia supports algebraic data types (variant types) and pattern matching. Data
+types are declared by giving a list of constructors with
+their respective arguments. For instance,
+
+```sophia
+datatype one_or_both('a, 'b) = Left('a) | Right('b) | Both('a, 'b)
+```
+
+Elements of data types can be pattern matched against, using the `switch` construct:
+
+```sophia
+function get_left(x : one_or_both('a, 'b)) : option('a) =
+  switch(x)
+    Left(x)    => Some(x)
+    Right(_)   => None
+    Both(x, _) => Some(x)
+```
+
+or directly in the left-hand side:
+```sophia
+function
+  get_left : one_or_both('a, 'b) => option('a)
+  get_left(Left(x))    = Some(x)
+  get_left(Right(_))   = None
+  get_left(Both(x, _)) = Some(x)
+```
+
+*NOTE: Data types cannot currently be recursive.*
+
+Sophia also supports the assignment of patterns to variables:
+```sophia
+function f(x) = switch(x)
+  h1::(t = h2::_) => (h1 + h2)::t  // same as `h1::h2::k => (h1 + h2)::h2::k`
+  _ => x
+
+function g(p : int * option(int)) : int =
+  let (a, (o = Some(b))) = p  // o is equal to Pair.snd(p)
+  b
+```
+
+Guards are boolean expressions that can be used on patterns in both switch
+statements and functions definitions. If a guard expression evaluates to
+`true`, then the corresponding body will be used. Otherwise, the next pattern
+will be checked:
+
+```sophia
+function get_left_if_positive(x : one_or_both(int, 'b)) : option(int) =
+  switch(x)
+    Left(x)    | x > 0 => Some(x)
+    Both(x, _) | x > 0 => Some(x)
+    _                  => None
+```
+
+```sophia
+function
+  get_left_if_positive : one_or_both(int, 'b) => option(int)
+  get_left_if_positive(Left(x))    | x > 0 = Some(x)
+  get_left_if_positive(Both(x, _)) | x > 0 = Some(x)
+  get_left_if_positive(_)                  = None
+```
+
+Guards cannot be stateful even when used inside a stateful function.
+
+## Lists
+
+A Sophia list is a dynamically sized, homogenous, immutable, singly
+linked list. A list is constructed with the syntax `[1, 2, 3]`. The
+elements of a list can be any of datatype but they must have the same
+type. The type of lists with elements of type `'e` is written
+`list('e)`. For example we can have the following lists:
+
+```sophia
+[1, 33, 2, 666]                                                   : list(int)
+[(1, "aaa"), (10, "jjj"), (666, "the beast")]                     : list(int * string)
+[{[1] = "aaa", [10] = "jjj"}, {[5] = "eee", [666] = "the beast"}] : list(map(int, string))
+```
+
+New elements can be prepended to the front of a list with the `::`
+operator. So `42 :: [1, 2, 3]` returns the list `[42, 1, 2, 3]`. The
+concatenation operator `++` appends its second argument to its first
+and returns the resulting list. So concatenating two lists
+`[1, 22, 33] ++ [10, 18, 55]` returns the list `[1, 22, 33, 10, 18, 55]`.
+
+Sophia supports list comprehensions known from languages like Python, Haskell or Erlang.
+Example syntax:
+```sophia
+[x + y | x <- [1,2,3,4,5], let k = x*x, if (k > 5), y <- [k, k+1, k+2]]
+// yields [12,13,14,20,21,22,30,31,32]
+```
+
+Lists can be constructed using the range syntax using special `..` operator:
+```sophia
+[1..4] == [1,2,3,4]
+```
+The ranges are always ascending and have step equal to 1.
+
+
+Please refer to the [standard library](sophia_stdlib.md#list) for the predefined functionalities.
+
+## Maps and records
+
+A Sophia record type is given by a fixed set of fields with associated,
+possibly different, types. For instance
+```sophia
+  record account = { name    : string,
+                     balance : int,
+                     history : list(transaction) }
+```
+
+Maps, on the other hand, can contain an arbitrary number of key-value bindings,
+but of a fixed type. The type of maps with keys of type `'k` and values of type
+`'v` is written `map('k, 'v)`. The key type can be any type that does not
+contain a map or a function type.
+
+Please refer to the [standard library](sophia_stdlib.md#map) for the predefined functionalities.
+
+### Constructing maps and records
+
+A value of record type is constructed by giving a value for each of the fields.
+For the example above,
+```sophia
+  function new_account(name) =
+    {name = name, balance = 0, history = []}
+```
+Maps are constructed similarly, with keys enclosed in square brackets
+```sophia
+  function example_map() : map(string, int) =
+    {["key1"] = 1, ["key2"] = 2}
+```
+The empty map is written `{}`.
+
+### Accessing values
+
+Record fields access is written `r.f` and map lookup `m[k]`. For instance,
+```sophia
+  function get_balance(a : address, accounts : map(address, account)) =
+    accounts[a].balance
+```
+Looking up a non-existing key in a map results in contract execution failing. A
+default value to return for non-existing keys can be provided using the syntax
+`m[k = default]`. See also `Map.member` and `Map.lookup` below.
+
+### Updating a value
+
+Record field updates are written `r{f = v}`. This creates a new record value
+which is the same as `r`, but with the value of the field `f` replaced by `v`.
+Similarly, `m{[k] = v}` constructs a map with the same values as `m` except
+that `k` maps to `v`. It makes no difference if `m` has a mapping for `k` or
+not.
+
+It is possible to give a name to the old value of a field or mapping in an
+update: instead of `acc{ balance = acc.balance + 100 }` it is possible to write
+`acc{ balance @ b = b + 100 }`, binding `b` to `acc.balance`. When giving a
+name to a map value (`m{ [k] @ x = v }`), the corresponding key must be present
+in the map or execution fails, but a default value can be provided:
+`m{ [k = default] @ x = v }`. In this case `x` is bound to `default` if
+`k` is not in the map.
+
+Updates can be nested:
+```sophia
+function clear_history(a : address, accounts : map(address, account)) : map(address, account) =
+  accounts{ [a].history = [] }
+```
+This is equivalent to `accounts{ [a] @ acc = acc{ history = [] } }` and thus
+requires `a` to be present in the accounts map. To have `clear_history` create
+an account if `a` is not in the map you can write (given a function `empty_account`):
+```sophia
+  accounts{ [a = empty_account()].history = [] }
+```
+
+### Map implementation
+
+Internally in the VM maps are implemented as hash maps and support fast lookup
+and update. Large maps can be stored in the contract state and the size of the
+map does not contribute to the gas costs of a contract call reading or updating
+it.
+
+## Strings
+
+There is a builtin type `string`, which can be seen as an array of bytes.
+Strings can be compared for equality (`==`, `!=`), used as keys in maps and
+records, and used in builtin functions `String.length`, `String.concat` and
+the hash functions described below.
+
+Please refer to the `String` [library documentation](sophia_stdlib.md#string).
+
+## Chars
+
+There is a builtin type `char` (the underlying representation being an integer),
+mainly used to manipulate strings via `String.to_list`/`String.from_list`.
+
+Characters can also be introduced as character literals (`'x', '+', ...).
+
+Please refer to the `Char` [library documentation](sophia_stdlib.md#char).
+
+## Byte arrays
+
+Byte arrays are fixed size arrays of 8-bit integers. They are described in hexadecimal system,
+for example the literal `#cafe` creates a two-element array of bytes `ca` (202) and `fe` (254)
+and thus is a value of type `bytes(2)`.
+
+Please refer to the `Bytes` [library documentation](sophia_stdlib.md#bytes).
+
+## Cryptographic builtins
+
+Libraries [Crypto](sophia_stdlib.md#crypto) and [String](sophia_stdlib.md#string) provide functions to
+hash objects, verify signatures etc. The `hash` is a type alias for `bytes(32)`.
+
+## Authorization interface
+
+When a Generalized account is authorized, the authorization function needs
+access to the transaction and the transaction hash for the wrapped transaction. (A `GAMetaTx`
+wrapping a transaction.) The transaction and the transaction hash is available in the primitive
+`Auth.tx` and `Auth.tx_hash` respectively, they are *only* available during authentication if invoked by a
+normal contract call they return `None`.
+
+## Oracle interface
+You can attach an oracle to the current contract and you can interact with oracles
+through the Oracle interface.
+
+For a full description of how Oracle works see
+[Oracles](https://github.com/aeternity/protocol/blob/master/oracles/oracles.md#oracles).
+For a functionality documentation refer to the [standard library](sophia_stdlib.md#oracle).
+
+### Example
+
+Example for an oracle answering questions of type `string` with answers of type `int`:
+```sophia
+contract Oracles =
+
+  stateful entrypoint registerOracle(acct : address,
+                                     sign : signature,   // Signed network id + oracle address + contract address
+                                     qfee : int,
+                                     ttl  : Chain.ttl) : oracle(string, int) =
+     Oracle.register(acct, signature = sign, qfee, ttl)
+
+  entrypoint queryFee(o : oracle(string, int)) : int =
+    Oracle.query_fee(o)
+
+  payable stateful entrypoint createQuery(o    : oracle_query(string, int),
+                                          q    : string,
+                                          qfee : int,
+                                          qttl : Chain.ttl,
+                                          rttl : int) : oracle_query(string, int) =
+    require(qfee =< Call.value, "insufficient value for qfee")
+    Oracle.query(o, q, qfee, qttl, RelativeTTL(rttl))
+
+  stateful entrypoint extendOracle(o   : oracle(string, int),
+                                   ttl : Chain.ttl) : unit =
+    Oracle.extend(o, ttl)
+
+  stateful entrypoint signExtendOracle(o    : oracle(string, int),
+                                       sign : signature,   // Signed network id + oracle address + contract address
+                                       ttl  : Chain.ttl) : unit =
+    Oracle.extend(o, signature = sign, ttl)
+
+  stateful entrypoint respond(o    : oracle(string, int),
+                              q    : oracle_query(string, int),
+                              sign : signature,        // Signed network id + oracle query id + contract address
+                              r    : int) =
+    Oracle.respond(o, q, signature = sign, r)
+
+  entrypoint getQuestion(o : oracle(string, int),
+                         q : oracle_query(string, int)) : string =
+    Oracle.get_question(o, q)
+
+  entrypoint hasAnswer(o : oracle(string, int),
+                       q : oracle_query(string, int)) =
+    switch(Oracle.get_answer(o, q))
+      None    => false
+      Some(_) => true
+
+  entrypoint getAnswer(o : oracle(string, int),
+                       q : oracle_query(string, int)) : option(int) =
+    Oracle.get_answer(o, q)
+```
+
+### Sanity checks
+
+When an Oracle literal is passed to a contract, no deep checks are performed.
+For extra safety [Oracle.check](sophia_stdlib.md#check) and [Oracle.check_query](sophia_stdlib.md#check_query)
+functions are provided.
+
+## AENS interface
+
+Contracts can interact with the
+[æternity naming system](https://github.com/aeternity/protocol/blob/master/AENS.md).
+For this purpose the [AENS](sophia_stdlib.md#aens) library was exposed.
+
+### Example
+
+In this example we assume that the name `name` already exists, and is owned by
+an account with address `addr`. In order to allow a contract `ct` to handle
+`name` the account holder needs to create a
+[signature](#delegation-signature) `sig` of `addr | name.hash | ct.address`.
+
+Armed with this information we can for example write a function that extends
+the name if it expires within 1000 blocks:
+```sophia
+  stateful entrypoint extend_if_necessary(addr : address, name : string, sig : signature) =
+    switch(AENS.lookup(name))
+      None => ()
+      Some(AENS.Name(_, FixedTTL(expiry), _)) =>
+        if(Chain.block_height + 1000 > expiry)
+          AENS.update(addr, name, Some(RelativeTTL(50000)), None, None, signature = sig)
+```
+
+And we can write functions that adds and removes keys from the pointers of the
+name:
+```sophia
+  stateful entrypoint add_key(addr : address, name : string, key : string,
+                              pt : AENS.pointee, sig : signature) =
+    switch(AENS.lookup(name))
+      None => ()
+      Some(AENS.Name(_, _, ptrs)) =>
+        AENS.update(addr, name, None, None, Some(ptrs{[key] = pt}), signature = sig)
+
+  stateful entrypoint delete_key(addr : address, name : string,
+                                 key : string, sig : signature) =
+    switch(AENS.lookup(name))
+      None => ()
+      Some(AENS.Name(_, _, ptrs)) =>
+        let ptrs = Map.delete(key, ptrs)
+        AENS.update(addr, name, None, None, Some(ptrs), signature = sig)
+```
+
+*Note:* From the Iris hardfork more strict rules apply for AENS pointers, when
+a Sophia contract lookup or update (bad) legacy pointers, the bad keys are
+automatically removed so they will not appear in the pointers map.
+
+## Events
+
+Sophia contracts log structured messages to an event log in the resulting
+blockchain transaction. The event log is quite similar to [Events in
+Solidity](https://solidity.readthedocs.io/en/v0.4.24/contracts.html#events).
+Events are further discussed in the [protocol](https://github.com/aeternity/protocol/blob/master/contracts/events.md).
+
+
+To use events a contract must declare a datatype `event`, and events are then
+logged using the `Chain.event` function:
+
+```sophia
+  datatype event
+    = Event1(int, int, string)
+    | Event2(string, address)
+
+  Chain.event(e : event) : unit
+```
+
+The event can have 0-3 *indexed* fields, and an optional *payload* field. A
+field is indexed if it fits in a 32-byte word, i.e.
+- `bool`
+- `int`
+- `bits`
+- `address`
+- `oracle(_, _)`
+- `oracle_query(_, _)`
+- contract types
+- `bytes(n)` for `n` ≤ 32, in particular `hash`
+
+The payload field must be either a string or a byte array of more than 32 bytes.
+The fields can appear in any order.
+
+*NOTE:* Indexing is not part of the core æternity node.
+
+Events are emitted by using the `Chain.event` function. The following function
+will emit one Event of each kind in the example.
+
+```sophia
+  entrypoint emit_events() : () =
+    Chain.event(Event1(42, 34, "foo"))
+    Chain.event(Event2("This is not indexed", Contract.address))
+```
+
+### Argument order
+
+It is only possible to have one (1) `string` parameter in the event, but it can
+be placed in any position (and its value will end up in the `data` field), i.e.
+```sophia
+AnotherEvent(string, indexed address)
+
+...
+
+Chain.event(AnotherEvent("This is not indexed", Contract.address))
+```
+would yield exactly the same result in the example above!
+
+## Compiler pragmas
+
+To enforce that a contract is only compiled with specific versions of the
+Sophia compiler, you can give one or more `@compiler` pragmas at the
+top-level (typically at the beginning) of a file. For instance, to enforce that
+a contract is compiled with version 4.3 of the compiler you write
+
+```sophia
+@compiler >= 4.3
+@compiler <  4.4
+```
+
+Valid operators in compiler pragmas are `<`, `=<`, `==`, `>=`, and `>`. Version
+numbers are given as a sequence of non-negative integers separated by dots.
+Trailing zeros are ignored, so `4.0.0 == 4`. If a constraint is violated an
+error is reported and compilation fails.
+
+## Exceptions
+
+Contracts can fail with an (uncatchable) exception using the built-in function
+
+```sophia
+abort(reason : string) : 'a
+```
+
+Calling abort causes the top-level call transaction to return an error result
+containing the `reason` string. Only the gas used up to and including the abort
+call is charged. This is different from termination due to a crash which
+consumes all available gas.
+
+For convenience the following function is also built-in:
+
+```sophia
+function require(b : bool, err : string) =
+    if(!b) abort(err)
+```
+
+## Delegation signature
+
+Some chain operations (`Oracle.<operation>` and `AENS.<operation>`) have an
+optional delegation signature. This is typically used when a user/accounts
+would like to allow a contract to act on it's behalf. The exact data to be
+signed varies for the different operations, but in all cases you should prepend
+the signature data with the `network_id` (`ae_mainnet` for the æternity mainnet, etc.).

docs/sophia_syntax.md

@@ -0,0 +1,267 @@
+# Syntax
+
+## Lexical syntax
+
+### Comments
+
+Single line comments start with `//` and block comments are enclosed in `/*`
+and `*/` and can be nested.
+
+### Keywords
+
+```
+contract elif else entrypoint false function if import include let mod namespace
+private payable stateful switch true type record datatype main interface
+```
+
+### Tokens
+
+- `Id = [a-z_][A-Za-z0-9_']*` identifiers start with a lower case letter.
+- `Con = [A-Z][A-Za-z0-9_']*` constructors start with an upper case letter.
+- `QId = (Con\.)+Id` qualified identifiers (e.g. `Map.member`)
+- `QCon = (Con\.)+Con` qualified constructor
+- `TVar = 'Id` type variable (e.g `'a`, `'b`)
+- `Int = [0-9]+(_[0-9]+)*|0x[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*` integer literal with optional `_` separators
+- `Bytes = #[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*` byte array literal with optional `_` separators
+- `String` string literal enclosed in `"` with escape character `\`
+- `Char` character literal enclosed in `'` with escape character `\`
+- `AccountAddress` base58-encoded 32 byte account pubkey with `ak_` prefix
+- `ContractAddress` base58-encoded 32 byte contract address with `ct_` prefix
+- `OracleAddress` base58-encoded 32 byte oracle address with `ok_` prefix
+- `OracleQueryId` base58-encoded 32 byte oracle query id with `oq_` prefix
+
+Valid string escape codes are
+
+| Escape        |       ASCII |   |
+|---------------|-------------|---|
+| `\b`          |           8 |   |
+| `\t`          |           9 |   |
+| `\n`          |          10 |   |
+| `\v`          |          11 |   |
+| `\f`          |          12 |   |
+| `\r`          |          13 |   |
+| `\e`          |          27 |   |
+| `\xHexDigits` | *HexDigits* |   |
+
+
+See the [identifier encoding scheme](https://github.com/aeternity/protocol/blob/master/node/api/api_encoding.md) for the
+details on the base58 literals.
+
+## Layout blocks
+
+Sophia uses Python-style layout rules to group declarations and statements. A
+layout block with more than one element must start on a separate line and be
+indented more than the currently enclosing layout block. Blocks with a single
+element can be written on the same line as the previous token.
+
+Each element of the block must share the same indentation and no part of an
+element may be indented less than the indentation of the block. For instance
+
+```sophia
+contract Layout =
+  function foo() = 0  // no layout
+  function bar() =    // layout block starts on next line
+    let x = foo()     // indented more than 2 spaces
+    x
+     + 1              // the '+' is indented more than the 'x'
+```
+
+## Notation
+
+In describing the syntax below, we use the following conventions:
+
+- Upper-case identifiers denote non-terminals (like `Expr`) or terminals with
+  some associated value (like `Id`).
+- Keywords and symbols are enclosed in single quotes: `'let'` or `'='`.
+- Choices are separated by vertical bars: `|`.
+- Optional elements are enclosed in `[` square brackets `]`.
+- `(` Parentheses `)` are used for grouping.
+- Zero or more repetitions are denoted by a postfix `*`, and one or more
+  repetitions by a `+`.
+- `Block(X)` denotes a layout block of `X`s.
+- `Sep(X, S)` is short for `[X (S X)*]`, i.e. a possibly empty sequence of `X`s
+  separated by `S`s.
+- `Sep1(X, S)` is short for `X (S X)*`, i.e. same as `Sep`, but must not be empty.
+
+
+## Declarations
+
+A Sophia file consists of a sequence of *declarations* in a layout block.
+
+```c
+File ::= Block(TopDecl)
+
+TopDecl ::= ['payable'] 'contract' Con '=' Block(Decl)
+       | 'namespace' Con '=' Block(Decl)
+       | '@compiler' PragmaOp Version
+       | 'include' String
+
+Decl ::= 'type'     Id ['(' TVar* ')'] '=' TypeAlias
+       | 'record'   Id ['(' TVar* ')'] '=' RecordType
+       | 'datatype' Id ['(' TVar* ')'] '=' DataType
+       | (EModifier* 'entrypoint' | FModifier* 'function') Block(FunDecl)
+
+FunDecl ::= Id ':' Type                             // Type signature
+          | Id Args [':' Type] '=' Block(Stmt)      // Definition
+
+PragmaOp ::= '<' | '=<' | '==' | '>=' | '>'
+Version  ::= Sep1(Int, '.')
+
+EModifier ::= 'payable' | 'stateful'
+FModifier ::= 'stateful' | 'private'
+
+Args ::= '(' Sep(Pattern, ',') ')'
+```
+
+Contract declarations must appear at the top-level.
+
+For example,
+```sophia
+contract Test =
+  type t = int
+  entrypoint add (x : t, y : t) = x + y
+```
+
+There are three forms of type declarations: type aliases (declared with the
+`type` keyword), record type definitions (`record`) and data type definitions
+(`datatype`):
+
+```c
+TypeAlias  ::= Type
+RecordType ::= '{' Sep(FieldType, ',') '}'
+DataType   ::= Sep1(ConDecl, '|')
+
+FieldType  ::= Id ':' Type
+ConDecl    ::= Con ['(' Sep1(Type, ',') ')']
+```
+
+For example,
+```sophia
+record   point('a) = {x : 'a, y : 'a}
+datatype shape('a) = Circle(point('a), 'a) | Rect(point('a), point('a))
+type     int_shape = shape(int)
+```
+
+## Types
+
+```c
+Type ::= Domain '=>' Type             // Function type
+       | Type '(' Sep(Type, ',') ')'  // Type application
+       | '(' Type ')'                 // Parens
+       | 'unit' | Sep(Type, '*')      // Tuples
+       | Id | QId | TVar
+
+Domain ::= Type                       // Single argument
+         | '(' Sep(Type, ',') ')'     // Multiple arguments
+```
+
+The function type arrow associates to the right.
+
+Example,
+```sophia
+'a => list('a) => (int * list('a))
+```
+
+## Statements
+
+Function bodies are blocks of *statements*, where a statement is one of the following
+
+```c
+Stmt ::= 'switch' '(' Expr ')' Block(Case)
+       | 'if' '(' Expr ')' Block(Stmt)
+       | 'elif' '(' Expr ')' Block(Stmt)
+       | 'else' Block(Stmt)
+       | 'let' LetDef
+       | Expr
+
+LetDef ::= Id Args [':' Type] '=' Block(Stmt)   // Function definition
+         | Pattern '=' Block(Stmt)              // Value definition
+
+Case    ::= Pattern '=>' Block(Stmt)
+Pattern ::= Expr
+```
+
+`if` statements can be followed by zero or more `elif` statements and an optional final `else` statement. For example,
+
+```sophia
+let x : int = 4
+switch(f(x))
+  None => 0
+  Some(y) =>
+    if(y > 10)
+      "too big"
+    elif(y < 3)
+      "too small"
+    else
+      "just right"
+```
+
+## Expressions
+
+```c
+Expr ::= '(' LamArgs ')' '=>' Block(Stmt)   // Anonymous function    (x) => x + 1
+       | '(' BinOp ')'                      // Operator lambda       (+)
+       | 'if' '(' Expr ')' Expr 'else' Expr // If expression         if(x < y) y else x
+       | Expr ':' Type                      // Type annotation       5 : int
+       | Expr BinOp Expr                    // Binary operator       x + y
+       | UnOp Expr                          // Unary operator        ! b
+       | Expr '(' Sep(Expr, ',') ')'        // Application           f(x, y)
+       | Expr '.' Id                        // Projection            state.x
+       | Expr '[' Expr ']'                  // Map lookup            map[key]
+       | Expr '{' Sep(FieldUpdate, ',') '}' // Record or map update  r{ fld[key].x = y }
+       | '[' Sep(Expr, ',') ']'             // List                  [1, 2, 3]
+       | '[' Expr '|' Sep(Generator, ',') ']'
+                                            // List comprehension    [k | x <- [1], if (f(x)), let k = x+1]
+       | '[' Expr '..' Expr ']'             // List range            [1..n]
+       | '{' Sep(FieldUpdate, ',') '}'      // Record or map value   {x = 0, y = 1}, {[key] = val}
+       | '(' Expr ')'                       // Parens                (1 + 2) * 3
+       | Id | Con | QId | QCon              // Identifiers           x, None, Map.member, AELib.Token
+       | Int | Bytes | String | Char        // Literals              123, 0xff, #00abc123, "foo", '%'
+       | AccountAddress | ContractAddress   // Chain identifiers
+       | OracleAddress | OracleQueryId      // Chain identifiers
+
+Generator ::= Pattern '<-' Expr   // Generator
+            | 'if' '(' Expr ')'   // Guard
+            | LetDef              // Definition
+
+LamArgs ::= '(' Sep(LamArg, ',') ')'
+LamArg  ::= Id [':' Type]
+
+FieldUpdate ::= Path '=' Expr
+Path ::= Id                 // Record field
+       | '[' Expr ']'       // Map key
+       | Path '.' Id        // Nested record field
+       | Path '[' Expr ']'  // Nested map key
+
+BinOp ::= '||' | '&&' | '<' | '>' | '=<' | '>=' | '==' | '!='
+        | '::' | '++' | '+' | '-' | '*' | '/' | 'mod' | '^'
+        | '|>'
+UnOp  ::= '-' | '!'
+```
+
+## Operators types
+
+| Operators | Type
+| --- | ---
+| `-` `+` `*` `/` `mod` `^` | arithmetic operators
+| `!` `&&` `\|\|` | logical operators
+| `==` `!=` `<` `>` `=<` `>=` | comparison operators
+| `::` `++` | list operators
+| `\|>` | functional operators
+
+## Operator precendences
+
+In order of highest to lowest precedence.
+
+| Operators | Associativity
+| --- | ---
+| `!` | right
+| `^` | left
+| `*` `/` `mod` | left
+| `-` (unary) | right
+| `+` `-` | left
+| `::` `++` | right
+| `<` `>` `=<` `>=` `==` `!=` | none
+| `&&` | right
+| `\|\|` | right
+| `\|>` | left

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-<h1 id="aeso_aci">aeso_aci</h1>
-<h3 id="module">Module</h3>
-<h3 id="aeso_aci_1">aeso_aci</h3>
-<p>The ACI interface encoder and decoder.</p>
-<h3 id="description">Description</h3>
-<p>This module provides an interface to generate and convert between
-Sophia contracts and a suitable JSON encoding of contract
-interface. As yet the interface is very basic.</p>
-<p>Encoding this contract:</p>
-<div class="highlight"><pre><span></span><code>contract Answers =
-  record state = { a : answers }
-  type answers() = map(string, int)
-
-  stateful function init() = { a = {} }
-  private function the_answer() = 42
-  function new_answer(q : string, a : int) : answers() = { [q] = a }
-</code></pre></div>
-<p>generates the following JSON structure representing the contract interface:</p>
-<div class="highlight"><pre><span></span><code><span class="p">{</span>
-<span class="w">  </span><span class="nt">&quot;contract&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
-<span class="w">    </span><span class="nt">&quot;functions&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">      </span><span class="p">{</span>
-<span class="w">        </span><span class="nt">&quot;arguments&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[],</span>
-<span class="w">        </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;init&quot;</span><span class="p">,</span>
-<span class="w">        </span><span class="nt">&quot;returns&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;Answers.state&quot;</span><span class="p">,</span>
-<span class="w">        </span><span class="nt">&quot;stateful&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span>
-<span class="w">      </span><span class="p">},</span>
-<span class="w">      </span><span class="p">{</span>
-<span class="w">        </span><span class="nt">&quot;arguments&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">          </span><span class="p">{</span>
-<span class="w">            </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;q&quot;</span><span class="p">,</span>
-<span class="w">            </span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;string&quot;</span>
-<span class="w">          </span><span class="p">},</span>
-<span class="w">          </span><span class="p">{</span>
-<span class="w">            </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;a&quot;</span><span class="p">,</span>
-<span class="w">            </span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;int&quot;</span>
-<span class="w">          </span><span class="p">}</span>
-<span class="w">        </span><span class="p">],</span>
-<span class="w">        </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;new_answer&quot;</span><span class="p">,</span>
-<span class="w">        </span><span class="nt">&quot;returns&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
-<span class="w">          </span><span class="nt">&quot;map&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">            </span><span class="s2">&quot;string&quot;</span><span class="p">,</span>
-<span class="w">            </span><span class="s2">&quot;int&quot;</span>
-<span class="w">          </span><span class="p">]</span>
-<span class="w">        </span><span class="p">},</span>
-<span class="w">        </span><span class="nt">&quot;stateful&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">false</span>
-<span class="w">      </span><span class="p">}</span>
-<span class="w">    </span><span class="p">],</span>
-<span class="w">    </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;Answers&quot;</span><span class="p">,</span>
-<span class="w">    </span><span class="nt">&quot;state&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
-<span class="w">      </span><span class="nt">&quot;record&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">        </span><span class="p">{</span>
-<span class="w">          </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;a&quot;</span><span class="p">,</span>
-<span class="w">          </span><span class="nt">&quot;type&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;Answers.answers&quot;</span>
-<span class="w">        </span><span class="p">}</span>
-<span class="w">      </span><span class="p">]</span>
-<span class="w">    </span><span class="p">},</span>
-<span class="w">    </span><span class="nt">&quot;typedefs&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">      </span><span class="p">{</span>
-<span class="w">        </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;answers&quot;</span><span class="p">,</span>
-<span class="w">        </span><span class="nt">&quot;typedef&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
-<span class="w">          </span><span class="nt">&quot;map&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
-<span class="w">            </span><span class="s2">&quot;string&quot;</span><span class="p">,</span>
-<span class="w">            </span><span class="s2">&quot;int&quot;</span>
-<span class="w">          </span><span class="p">]</span>
-<span class="w">        </span><span class="p">},</span>
-<span class="w">        </span><span class="nt">&quot;vars&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[]</span>
-<span class="w">      </span><span class="p">}</span>
-<span class="w">    </span><span class="p">]</span>
-<span class="w">  </span><span class="p">}</span>
-<span class="p">}</span>
-</code></pre></div>
-<p>When that encoding is decoded the following include definition is generated:</p>
-<div class="highlight"><pre><span></span><code>contract Answers =
-  record state = {a : Answers.answers}
-  type answers = map(string, int)
-  function init : () =&gt; Answers.state
-  function new_answer : (string, int) =&gt; map(string, int)
-</code></pre></div>
-<h3 id="types">Types</h3>
-<div class="highlight"><pre><span></span><code><span class="p">-</span><span class="ni">type</span><span class="w"> </span><span class="n">aci_type</span><span class="p">()</span><span class="w">  </span><span class="p">::</span><span class="w"> </span><span class="n">json</span><span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="n">string</span><span class="p">.</span>
-<span class="p">-</span><span class="ni">type</span><span class="w"> </span><span class="n">json</span><span class="p">()</span><span class="w">      </span><span class="p">::</span><span class="w"> </span><span class="nn">jsx</span><span class="p">:</span><span class="nf">json_term</span><span class="p">().</span>
-<span class="p">-</span><span class="ni">type</span><span class="w"> </span><span class="n">json_text</span><span class="p">()</span><span class="w"> </span><span class="p">::</span><span class="w"> </span><span class="n">binary</span><span class="p">().</span>
-</code></pre></div>
-<h3 id="exports">Exports</h3>
-<h4 id="contract_interfaceaci_type-string-ok-json-string-error-term">contract_interface(aci_type(), string()) -&gt; {ok, json() | string()} | {error, term()}</h4>
-<p>Generate the JSON encoding of the interface to a contract. The type definitions
-and non-private functions are included in the JSON string.</p>
-<h4 id="render_aci_jsonjson-json_text-string">render_aci_json(json() | json_text()) -&gt; string().</h4>
-<p>Take a JSON encoding of a contract interface and generate a contract interface
-that can be included in another contract.</p>
-<h3 id="example-run">Example run</h3>
-<p>This is an example of using the ACI generator from an Erlang shell. The file
-called <code>aci_test.aes</code> contains the contract in the description from which we
-want to generate files <code>aci_test.json</code> which is the JSON encoding of the
-contract interface and <code>aci_test.include</code> which is the contract definition to
-be included inside another contract.</p>
-<div class="highlight"><pre><span></span><code><span class="mi">1</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="nv">Contract</span><span class="p">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nn">file</span><span class="p">:</span><span class="nf">read_file</span><span class="p">(</span><span class="s">&quot;aci_test.aes&quot;</span><span class="p">).</span>
-<span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="o">&lt;&lt;</span><span class="s">&quot;contract Answers =</span><span class="se">\n</span><span class="s">  record state = { a : answers }</span><span class="se">\n</span><span class="s">  type answers() = map(string, int)</span><span class="se">\n\n</span><span class="s">  stateful function&quot;</span><span class="p">...</span><span class="o">&gt;&gt;</span><span class="p">}</span>
-<span class="mi">2</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="nv">JsonACI</span><span class="p">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nn">aeso_aci</span><span class="p">:</span><span class="nf">contract_interface</span><span class="p">(</span><span class="n">json</span><span class="p">,</span><span class="w"> </span><span class="nv">Contract</span><span class="p">).</span>
-<span class="p">{</span><span class="n">ok</span><span class="p">,[#{</span><span class="n">contract</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">           </span><span class="p">#{</span><span class="n">functions</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">                 </span><span class="p">[#{</span><span class="n">arguments</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">[],</span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;init&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span>
-<span class="w">                    </span><span class="n">returns</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;Answers.state&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="n">stateful</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">true</span><span class="p">},</span>
-<span class="w">                  </span><span class="p">#{</span><span class="n">arguments</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">                        </span><span class="p">[#{</span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;q&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="n">type</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;string&quot;</span><span class="o">&gt;&gt;</span><span class="p">},</span>
-<span class="w">                         </span><span class="p">#{</span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;a&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="n">type</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;int&quot;</span><span class="o">&gt;&gt;</span><span class="p">}],</span>
-<span class="w">                    </span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;new_answer&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span>
-<span class="w">                    </span><span class="n">returns</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">#{</span><span class="o">&lt;&lt;</span><span class="s">&quot;map&quot;</span><span class="o">&gt;&gt;</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">[</span><span class="o">&lt;&lt;</span><span class="s">&quot;string&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="o">&lt;&lt;</span><span class="s">&quot;int&quot;</span><span class="o">&gt;&gt;</span><span class="p">]},</span>
-<span class="w">                    </span><span class="n">stateful</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">false</span><span class="p">}],</span>
-<span class="w">             </span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;Answers&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span>
-<span class="w">             </span><span class="n">state</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">                 </span><span class="p">#{</span><span class="n">record</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">                       </span><span class="p">[#{</span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;a&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="n">type</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;Answers.answers&quot;</span><span class="o">&gt;&gt;</span><span class="p">}]},</span>
-<span class="w">             </span><span class="n">typedefs</span><span class="w"> </span><span class="o">=&gt;</span>
-<span class="w">                 </span><span class="p">[#{</span><span class="n">name</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="s">&quot;answers&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span>
-<span class="w">                    </span><span class="n">typedef</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">#{</span><span class="o">&lt;&lt;</span><span class="s">&quot;map&quot;</span><span class="o">&gt;&gt;</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">[</span><span class="o">&lt;&lt;</span><span class="s">&quot;string&quot;</span><span class="o">&gt;&gt;</span><span class="p">,</span><span class="o">&lt;&lt;</span><span class="s">&quot;int&quot;</span><span class="o">&gt;&gt;</span><span class="p">]},</span>
-<span class="w">                    </span><span class="n">vars</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="p">[]}]}}]}</span>
-<span class="mi">3</span><span class="o">&gt;</span><span class="w"> </span><span class="nn">file</span><span class="p">:</span><span class="nf">write_file</span><span class="p">(</span><span class="s">&quot;aci_test.aci&quot;</span><span class="p">,</span><span class="w"> </span><span class="nn">jsx</span><span class="p">:</span><span class="nf">encode</span><span class="p">(</span><span class="nv">JsonACI</span><span class="p">)).</span>
-<span class="n">ok</span>
-<span class="mi">4</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="nv">InterfaceStub</span><span class="p">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nn">aeso_aci</span><span class="p">:</span><span class="nf">render_aci_json</span><span class="p">(</span><span class="nv">JsonACI</span><span class="p">).</span>
-<span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="o">&lt;&lt;</span><span class="s">&quot;contract Answers =</span><span class="se">\n</span><span class="s">  record state = {a : Answers.answers}</span><span class="se">\n</span><span class="s">  type answers = map(string, int)</span><span class="se">\n</span><span class="s">  function init &quot;</span><span class="p">...</span><span class="o">&gt;&gt;</span><span class="p">}</span>
-<span class="mi">5</span><span class="o">&gt;</span><span class="w"> </span><span class="nn">file</span><span class="p">:</span><span class="nf">write_file</span><span class="p">(</span><span class="s">&quot;aci_test.include&quot;</span><span class="p">,</span><span class="w"> </span><span class="nv">InterfaceStub</span><span class="p">).</span>
-<span class="n">ok</span>
-<span class="mi">6</span><span class="o">&gt;</span><span class="w"> </span><span class="nn">jsx</span><span class="p">:</span><span class="nf">prettify</span><span class="p">(</span><span class="nn">jsx</span><span class="p">:</span><span class="nf">encode</span><span class="p">(</span><span class="nv">JsonACI</span><span class="p">)).</span>
-<span class="o">&lt;&lt;</span><span class="s">&quot;[</span><span class="se">\n</span><span class="s">  {</span><span class="se">\n</span><span class="s">    </span><span class="se">\&quot;</span><span class="s">contract</span><span class="se">\&quot;</span><span class="s">: {</span><span class="se">\n</span><span class="s">      </span><span class="se">\&quot;</span><span class="s">functions</span><span class="se">\&quot;</span><span class="s">: [</span><span class="se">\n</span><span class="s">        {</span><span class="se">\n</span><span class="s">          </span><span class="se">\&quot;</span><span class="s">arguments</span><span class="se">\&quot;</span><span class="s">: [],</span><span class="se">\n</span><span class="s">          </span><span class="se">\&quot;</span><span class="s">name</span><span class="se">\&quot;</span><span class="s">: </span><span class="se">\&quot;</span><span class="s">init</span><span class="se">\&quot;</span><span class="s">,</span><span class="se">\n</span><span class="s">        &quot;</span><span class="p">...</span><span class="o">&gt;&gt;</span>
-</code></pre></div>
-<p>The final call to <code>jsx:prettify(jsx:encode(JsonACI))</code> returns the encoding in a
-more easily readable form. This is what is shown in the description above.</p>
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-    Description
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-  <a href="#types" class="md-nav__link">
-    Types
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-            <div class="md-content" data-md-component="content">
-              <article class="md-content__inner md-typeset">
-                
-                  
-
-
-
-<h1 id="aeso_compiler">aeso_compiler</h1>
-<h3 id="module">Module</h3>
-<h3 id="aeso_compiler_1">aeso_compiler</h3>
-<p>The Sophia compiler</p>
-<h3 id="description">Description</h3>
-<p>This module provides the interface to the standard Sophia compiler. It
-returns the compiled module in a map which can then be loaded.</p>
-<h3 id="types">Types</h3>
-<div class="highlight"><pre><span></span><code><span class="nf">contract_string</span><span class="p">()</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">string</span><span class="p">()</span><span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="n">binary</span><span class="p">()</span>
-<span class="nf">contract_map</span><span class="p">()</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">#{</span><span class="n">bytecode</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">binary</span><span class="p">(),</span>
-<span class="w">                   </span><span class="n">compiler_version</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">binary</span><span class="p">(),</span>
-<span class="w">                   </span><span class="n">contract_souce</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">string</span><span class="p">(),</span>
-<span class="w">                   </span><span class="n">type_info</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">type_info</span><span class="p">()}</span>
-<span class="nf">type_info</span><span class="p">()</span>
-<span class="nf">errorstring</span><span class="p">()</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">binary</span><span class="p">()</span>
-</code></pre></div>
-<h3 id="exports">Exports</h3>
-<h4 id="filefile">file(File)</h4>
-<h4 id="filefile-options-compret">file(File, Options) -&gt; CompRet</h4>
-<h4 id="from_stringcontractstring-options-compret">from_string(ContractString, Options) -&gt; CompRet</h4>
-<p>Types</p>
-<div class="highlight"><pre><span></span><code><span class="nv">ContractString</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">contract_string</span><span class="p">()</span>
-<span class="nv">Options</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="nv">Option</span><span class="p">]</span>
-<span class="nv">CompRet</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="n">ok</span><span class="p">,</span><span class="nv">ContractMap</span><span class="p">}</span><span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="p">{</span><span class="n">error</span><span class="p">,</span><span class="nv">ErrorString</span><span class="p">}</span>
-<span class="nv">ContractMap</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">contract_map</span><span class="p">()</span>
-<span class="nv">ErrorString</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">errorstring</span><span class="p">()</span>
-</code></pre></div>
-<p>Compile a contract defined in a file or in a string.</p>
-<p>The <strong>pp_</strong> options all print to standard output the following:</p>
-<p><code>pp_sophia_code</code> - print the input Sophia code.</p>
-<p><code>pp_ast</code> - print the AST of the code</p>
-<p><code>pp_types</code> - print information about the types</p>
-<p><code>pp_typed_ast</code> - print the AST with type information at each node</p>
-<p><code>pp_assembler</code> - print the generated assembler code</p>
-<p>The option <code>include_child_contract_symbols</code> includes the symbols of child contracts functions in the generated fate code. It is turned off by default to avoid making contracts bigger on chain.</p>
-<h4 id="options-to-control-which-compiler-optimizations-should-run">Options to control which compiler optimizations should run:</h4>
-<p>By default all optimizations are turned on, to disable an optimization, it should be
-explicitly set to false and passed as a compiler option.</p>
-<p>List of optimizations:</p>
-<ul>
-<li>optimize_inliner</li>
-<li>optimize_inline_local_functions</li>
-<li>optimize_bind_subexpressions</li>
-<li>optimize_let_floating</li>
-<li>optimize_simplifier</li>
-<li>optimize_drop_unused_lets</li>
-<li>optimize_push_consume</li>
-<li>optimize_one_shot_var</li>
-<li>optimize_write_to_dead_var</li>
-<li>optimize_inline_switch_target</li>
-<li>optimize_swap_push</li>
-<li>optimize_swap_pop</li>
-<li>optimize_swap_write</li>
-<li>optimize_constant_propagation</li>
-<li>optimize_prune_impossible_branches</li>
-<li>optimize_single_successful_branch</li>
-<li>optimize_inline_store</li>
-<li>optimize_float_switch_bod</li>
-</ul>
-<h4 id="check_callcontractstring-options-checkret">check_call(ContractString, Options) -&gt; CheckRet</h4>
-<p>Types
-<div class="highlight"><pre><span></span><code>ContractString = string() | binary()
-CheckRet = {ok,string(),{Types,Type | any()},Terms} | {error,Term}
-Types = [Type]
-Type = term()
-</code></pre></div>
-Check a call in contract through the <code>__call</code> function.</p>
-<h4 id="version-ok-version-error-term">version() -&gt; {ok, Version} | {error, term()}</h4>
-<p>Types</p>
-<div class="highlight"><pre><span></span><code><span class="nv">Version</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">binary</span><span class="p">()</span>
-</code></pre></div>
-<p>Get the current version of the Sophia compiler.</p>
-
-
-
-
-
-                
-              </article>
-            </div>
-          
-          
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master/assets/javascripts/lunr/min/lunr.da.min.js

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-/*!
- * Lunr languages, `Danish` language
- * https://github.com/MihaiValentin/lunr-languages
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- * http://www.mozilla.org/MPL/
- */
-/*!
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- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
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- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
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master/assets/javascripts/lunr/min/lunr.hi.min.js

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master/assets/javascripts/lunr/min/lunr.ja.min.js

@@ -1 +0,0 @@
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var r="2"==e.version[0];e.ja=function(){this.pipeline.reset(),this.pipeline.add(e.ja.trimmer,e.ja.stopWordFilter,e.ja.stemmer),r?this.tokenizer=e.ja.tokenizer:(e.tokenizer&&(e.tokenizer=e.ja.tokenizer),this.tokenizerFn&&(this.tokenizerFn=e.ja.tokenizer))};var t=new e.TinySegmenter;e.ja.tokenizer=function(i){var n,o,s,p,a,u,m,l,c,f;if(!arguments.length||null==i||void 0==i)return[];if(Array.isArray(i))return i.map(function(t){return r?new e.Token(t.toLowerCase()):t.toLowerCase()});for(o=i.toString().toLowerCase().replace(/^\s+/,""),n=o.length-1;n>=0;n--)if(/\S/.test(o.charAt(n))){o=o.substring(0,n+1);break}for(a=[],s=o.length,c=0,l=0;c<=s;c++)if(u=o.charAt(c),m=c-l,u.match(/\s/)||c==s){if(m>0)for(p=t.segment(o.slice(l,c)).filter(function(e){return!!e}),f=l,n=0;n<p.length;n++)r?a.push(new e.Token(p[n],{position:[f,p[n].length],index:a.length})):a.push(p[n]),f+=p[n].length;l=c+1}return a},e.ja.stemmer=function(){return function(e){return e}}(),e.Pipeline.registerFunction(e.ja.stemmer,"stemmer-ja"),e.ja.wordCharacters="一二三四五六七八九十百千万億兆一-龠々〆ヵヶぁ-んァ-ヴーｱ-ﾝﾞa-zA-Zａ-ｚＡ-Ｚ0-9０-９",e.ja.trimmer=e.trimmerSupport.generateTrimmer(e.ja.wordCharacters),e.Pipeline.registerFunction(e.ja.trimmer,"trimmer-ja"),e.ja.stopWordFilter=e.generateStopWordFilter("これ それ あれ この その あの ここ そこ あそこ こちら どこ だれ なに なん 何 私 貴方 貴方方 我々 私達 あの人 あのかた 彼女 彼 です あります おります います は が の に を で え から まで より も どの と し それで しかし".split(" ")),e.Pipeline.registerFunction(e.ja.stopWordFilter,"stopWordFilter-ja"),e.jp=e.ja,e.Pipeline.registerFunction(e.jp.stemmer,"stemmer-jp"),e.Pipeline.registerFunction(e.jp.trimmer,"trimmer-jp"),e.Pipeline.registerFunction(e.jp.stopWordFilter,"stopWordFilter-jp")}});

master/assets/javascripts/lunr/min/lunr.jp.min.js

@@ -1 +0,0 @@
-module.exports=require("./lunr.ja");

master/assets/javascripts/lunr/min/lunr.multi.min.js

@@ -1 +0,0 @@
-!function(e,t){"function"==typeof define&&define.amd?define(t):"object"==typeof exports?module.exports=t():t()(e.lunr)}(this,function(){return function(e){e.multiLanguage=function(){for(var t=Array.prototype.slice.call(arguments),i=t.join("-"),r="",n=[],s=[],p=0;p<t.length;++p)"en"==t[p]?(r+="\\w",n.unshift(e.stopWordFilter),n.push(e.stemmer),s.push(e.stemmer)):(r+=e[t[p]].wordCharacters,e[t[p]].stopWordFilter&&n.unshift(e[t[p]].stopWordFilter),e[t[p]].stemmer&&(n.push(e[t[p]].stemmer),s.push(e[t[p]].stemmer)));var o=e.trimmerSupport.generateTrimmer(r);return e.Pipeline.registerFunction(o,"lunr-multi-trimmer-"+i),n.unshift(o),function(){this.pipeline.reset(),this.pipeline.add.apply(this.pipeline,n),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add.apply(this.searchPipeline,s))}}}});

master/assets/javascripts/lunr/min/lunr.no.min.js

@@ -1,18 +0,0 @@
-/*!
- * Lunr languages, `Norwegian` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Mihai Valentin
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");e.no=function(){this.pipeline.reset(),this.pipeline.add(e.no.trimmer,e.no.stopWordFilter,e.no.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.no.stemmer))},e.no.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.no.trimmer=e.trimmerSupport.generateTrimmer(e.no.wordCharacters),e.Pipeline.registerFunction(e.no.trimmer,"trimmer-no"),e.no.stemmer=function(){var r=e.stemmerSupport.Among,n=e.stemmerSupport.SnowballProgram,i=new function(){function e(){var e,r=w.cursor+3;if(a=w.limit,0<=r||r<=w.limit){for(s=r;;){if(e=w.cursor,w.in_grouping(d,97,248)){w.cursor=e;break}if(e>=w.limit)return;w.cursor=e+1}for(;!w.out_grouping(d,97,248);){if(w.cursor>=w.limit)return;w.cursor++}a=w.cursor,a<s&&(a=s)}}function i(){var e,r,n;if(w.cursor>=a&&(r=w.limit_backward,w.limit_backward=a,w.ket=w.cursor,e=w.find_among_b(m,29),w.limit_backward=r,e))switch(w.bra=w.cursor,e){case 1:w.slice_del();break;case 2:n=w.limit-w.cursor,w.in_grouping_b(c,98,122)?w.slice_del():(w.cursor=w.limit-n,w.eq_s_b(1,"k")&&w.out_grouping_b(d,97,248)&&w.slice_del());break;case 3:w.slice_from("er")}}function t(){var e,r=w.limit-w.cursor;w.cursor>=a&&(e=w.limit_backward,w.limit_backward=a,w.ket=w.cursor,w.find_among_b(u,2)?(w.bra=w.cursor,w.limit_backward=e,w.cursor=w.limit-r,w.cursor>w.limit_backward&&(w.cursor--,w.bra=w.cursor,w.slice_del())):w.limit_backward=e)}function o(){var e,r;w.cursor>=a&&(r=w.limit_backward,w.limit_backward=a,w.ket=w.cursor,e=w.find_among_b(l,11),e?(w.bra=w.cursor,w.limit_backward=r,1==e&&w.slice_del()):w.limit_backward=r)}var s,a,m=[new r("a",-1,1),new r("e",-1,1),new r("ede",1,1),new r("ande",1,1),new r("ende",1,1),new r("ane",1,1),new r("ene",1,1),new r("hetene",6,1),new r("erte",1,3),new r("en",-1,1),new r("heten",9,1),new r("ar",-1,1),new r("er",-1,1),new r("heter",12,1),new r("s",-1,2),new r("as",14,1),new r("es",14,1),new r("edes",16,1),new r("endes",16,1),new r("enes",16,1),new r("hetenes",19,1),new r("ens",14,1),new r("hetens",21,1),new r("ers",14,1),new r("ets",14,1),new r("et",-1,1),new r("het",25,1),new r("ert",-1,3),new r("ast",-1,1)],u=[new r("dt",-1,-1),new r("vt",-1,-1)],l=[new r("leg",-1,1),new r("eleg",0,1),new r("ig",-1,1),new r("eig",2,1),new r("lig",2,1),new r("elig",4,1),new r("els",-1,1),new r("lov",-1,1),new r("elov",7,1),new r("slov",7,1),new r("hetslov",9,1)],d=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,48,0,128],c=[119,125,149,1],w=new n;this.setCurrent=function(e){w.setCurrent(e)},this.getCurrent=function(){return w.getCurrent()},this.stem=function(){var r=w.cursor;return e(),w.limit_backward=r,w.cursor=w.limit,i(),w.cursor=w.limit,t(),w.cursor=w.limit,o(),!0}};return function(e){return"function"==typeof e.update?e.update(function(e){return i.setCurrent(e),i.stem(),i.getCurrent()}):(i.setCurrent(e),i.stem(),i.getCurrent())}}(),e.Pipeline.registerFunction(e.no.stemmer,"stemmer-no"),e.no.stopWordFilter=e.generateStopWordFilter("alle at av bare begge ble blei bli blir blitt både båe da de deg dei deim deira deires dem den denne der dere deres det dette di din disse ditt du dykk dykkar då eg ein eit eitt eller elles en enn er et ett etter for fordi fra før ha hadde han hans har hennar henne hennes her hjå ho hoe honom hoss hossen hun hva hvem hver hvilke hvilken hvis hvor hvordan hvorfor i ikke ikkje ikkje ingen ingi inkje inn inni ja jeg kan kom korleis korso kun kunne kva kvar kvarhelst kven kvi kvifor man mange me med medan meg meget mellom men mi min mine mitt mot mykje ned no noe noen noka noko nokon nokor nokre nå når og også om opp oss over på samme seg selv si si sia sidan siden sin sine sitt sjøl skal skulle slik so som som somme somt så sånn til um upp ut uten var vart varte ved vere verte vi vil ville vore vors vort vår være være vært å".split(" ")),e.Pipeline.registerFunction(e.no.stopWordFilter,"stopWordFilter-no")}});

master/assets/javascripts/lunr/min/lunr.stemmer.support.min.js

@@ -1 +0,0 @@
-!function(r,t){"function"==typeof define&&define.amd?define(t):"object"==typeof exports?module.exports=t():t()(r.lunr)}(this,function(){return function(r){r.stemmerSupport={Among:function(r,t,i,s){if(this.toCharArray=function(r){for(var t=r.length,i=new Array(t),s=0;s<t;s++)i[s]=r.charCodeAt(s);return i},!r&&""!=r||!t&&0!=t||!i)throw"Bad Among initialisation: s:"+r+", substring_i: "+t+", result: "+i;this.s_size=r.length,this.s=this.toCharArray(r),this.substring_i=t,this.result=i,this.method=s},SnowballProgram:function(){var r;return{bra:0,ket:0,limit:0,cursor:0,limit_backward:0,setCurrent:function(t){r=t,this.cursor=0,this.limit=t.length,this.limit_backward=0,this.bra=this.cursor,this.ket=this.limit},getCurrent:function(){var t=r;return r=null,t},in_grouping:function(t,i,s){if(this.cursor<this.limit){var e=r.charCodeAt(this.cursor);if(e<=s&&e>=i&&(e-=i,t[e>>3]&1<<(7&e)))return this.cursor++,!0}return!1},in_grouping_b:function(t,i,s){if(this.cursor>this.limit_backward){var e=r.charCodeAt(this.cursor-1);if(e<=s&&e>=i&&(e-=i,t[e>>3]&1<<(7&e)))return this.cursor--,!0}return!1},out_grouping:function(t,i,s){if(this.cursor<this.limit){var e=r.charCodeAt(this.cursor);if(e>s||e<i)return this.cursor++,!0;if(e-=i,!(t[e>>3]&1<<(7&e)))return this.cursor++,!0}return!1},out_grouping_b:function(t,i,s){if(this.cursor>this.limit_backward){var e=r.charCodeAt(this.cursor-1);if(e>s||e<i)return this.cursor--,!0;if(e-=i,!(t[e>>3]&1<<(7&e)))return this.cursor--,!0}return!1},eq_s:function(t,i){if(this.limit-this.cursor<t)return!1;for(var s=0;s<t;s++)if(r.charCodeAt(this.cursor+s)!=i.charCodeAt(s))return!1;return this.cursor+=t,!0},eq_s_b:function(t,i){if(this.cursor-this.limit_backward<t)return!1;for(var s=0;s<t;s++)if(r.charCodeAt(this.cursor-t+s)!=i.charCodeAt(s))return!1;return this.cursor-=t,!0},find_among:function(t,i){for(var s=0,e=i,n=this.cursor,u=this.limit,o=0,h=0,c=!1;;){for(var a=s+(e-s>>1),f=0,l=o<h?o:h,_=t[a],m=l;m<_.s_size;m++){if(n+l==u){f=-1;break}if(f=r.charCodeAt(n+l)-_.s[m])break;l++}if(f<0?(e=a,h=l):(s=a,o=l),e-s<=1){if(s>0||e==s||c)break;c=!0}}for(;;){var _=t[s];if(o>=_.s_size){if(this.cursor=n+_.s_size,!_.method)return _.result;var b=_.method();if(this.cursor=n+_.s_size,b)return _.result}if((s=_.substring_i)<0)return 0}},find_among_b:function(t,i){for(var s=0,e=i,n=this.cursor,u=this.limit_backward,o=0,h=0,c=!1;;){for(var a=s+(e-s>>1),f=0,l=o<h?o:h,_=t[a],m=_.s_size-1-l;m>=0;m--){if(n-l==u){f=-1;break}if(f=r.charCodeAt(n-1-l)-_.s[m])break;l++}if(f<0?(e=a,h=l):(s=a,o=l),e-s<=1){if(s>0||e==s||c)break;c=!0}}for(;;){var _=t[s];if(o>=_.s_size){if(this.cursor=n-_.s_size,!_.method)return _.result;var b=_.method();if(this.cursor=n-_.s_size,b)return _.result}if((s=_.substring_i)<0)return 0}},replace_s:function(t,i,s){var e=s.length-(i-t),n=r.substring(0,t),u=r.substring(i);return r=n+s+u,this.limit+=e,this.cursor>=i?this.cursor+=e:this.cursor>t&&(this.cursor=t),e},slice_check:function(){if(this.bra<0||this.bra>this.ket||this.ket>this.limit||this.limit>r.length)throw"faulty slice operation"},slice_from:function(r){this.slice_check(),this.replace_s(this.bra,this.ket,r)},slice_del:function(){this.slice_from("")},insert:function(r,t,i){var s=this.replace_s(r,t,i);r<=this.bra&&(this.bra+=s),r<=this.ket&&(this.ket+=s)},slice_to:function(){return this.slice_check(),r.substring(this.bra,this.ket)},eq_v_b:function(r){return this.eq_s_b(r.length,r)}}}},r.trimmerSupport={generateTrimmer:function(r){var t=new RegExp("^[^"+r+"]+"),i=new RegExp("[^"+r+"]+$");return function(r){return"function"==typeof r.update?r.update(function(r){return r.replace(t,"").replace(i,"")}):r.replace(t,"").replace(i,"")}}}}});

master/assets/javascripts/lunr/min/lunr.sv.min.js

@@ -1,18 +0,0 @@
-/*!
- * Lunr languages, `Swedish` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Mihai Valentin
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");e.sv=function(){this.pipeline.reset(),this.pipeline.add(e.sv.trimmer,e.sv.stopWordFilter,e.sv.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.sv.stemmer))},e.sv.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.sv.trimmer=e.trimmerSupport.generateTrimmer(e.sv.wordCharacters),e.Pipeline.registerFunction(e.sv.trimmer,"trimmer-sv"),e.sv.stemmer=function(){var r=e.stemmerSupport.Among,n=e.stemmerSupport.SnowballProgram,t=new function(){function e(){var e,r=w.cursor+3;if(o=w.limit,0<=r||r<=w.limit){for(a=r;;){if(e=w.cursor,w.in_grouping(l,97,246)){w.cursor=e;break}if(w.cursor=e,w.cursor>=w.limit)return;w.cursor++}for(;!w.out_grouping(l,97,246);){if(w.cursor>=w.limit)return;w.cursor++}o=w.cursor,o<a&&(o=a)}}function t(){var e,r=w.limit_backward;if(w.cursor>=o&&(w.limit_backward=o,w.cursor=w.limit,w.ket=w.cursor,e=w.find_among_b(u,37),w.limit_backward=r,e))switch(w.bra=w.cursor,e){case 1:w.slice_del();break;case 2:w.in_grouping_b(d,98,121)&&w.slice_del()}}function i(){var e=w.limit_backward;w.cursor>=o&&(w.limit_backward=o,w.cursor=w.limit,w.find_among_b(c,7)&&(w.cursor=w.limit,w.ket=w.cursor,w.cursor>w.limit_backward&&(w.bra=--w.cursor,w.slice_del())),w.limit_backward=e)}function s(){var e,r;if(w.cursor>=o){if(r=w.limit_backward,w.limit_backward=o,w.cursor=w.limit,w.ket=w.cursor,e=w.find_among_b(m,5))switch(w.bra=w.cursor,e){case 1:w.slice_del();break;case 2:w.slice_from("lös");break;case 3:w.slice_from("full")}w.limit_backward=r}}var a,o,u=[new r("a",-1,1),new r("arna",0,1),new r("erna",0,1),new r("heterna",2,1),new r("orna",0,1),new r("ad",-1,1),new r("e",-1,1),new r("ade",6,1),new r("ande",6,1),new r("arne",6,1),new r("are",6,1),new r("aste",6,1),new r("en",-1,1),new r("anden",12,1),new r("aren",12,1),new r("heten",12,1),new r("ern",-1,1),new r("ar",-1,1),new r("er",-1,1),new r("heter",18,1),new r("or",-1,1),new r("s",-1,2),new r("as",21,1),new r("arnas",22,1),new r("ernas",22,1),new r("ornas",22,1),new r("es",21,1),new r("ades",26,1),new r("andes",26,1),new r("ens",21,1),new r("arens",29,1),new r("hetens",29,1),new r("erns",21,1),new r("at",-1,1),new r("andet",-1,1),new r("het",-1,1),new r("ast",-1,1)],c=[new r("dd",-1,-1),new r("gd",-1,-1),new r("nn",-1,-1),new r("dt",-1,-1),new r("gt",-1,-1),new r("kt",-1,-1),new r("tt",-1,-1)],m=[new r("ig",-1,1),new r("lig",0,1),new r("els",-1,1),new r("fullt",-1,3),new r("löst",-1,2)],l=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,24,0,32],d=[119,127,149],w=new n;this.setCurrent=function(e){w.setCurrent(e)},this.getCurrent=function(){return w.getCurrent()},this.stem=function(){var r=w.cursor;return e(),w.limit_backward=r,w.cursor=w.limit,t(),w.cursor=w.limit,i(),w.cursor=w.limit,s(),!0}};return function(e){return"function"==typeof e.update?e.update(function(e){return t.setCurrent(e),t.stem(),t.getCurrent()}):(t.setCurrent(e),t.stem(),t.getCurrent())}}(),e.Pipeline.registerFunction(e.sv.stemmer,"stemmer-sv"),e.sv.stopWordFilter=e.generateStopWordFilter("alla allt att av blev bli blir blivit de dem den denna deras dess dessa det detta dig din dina ditt du där då efter ej eller en er era ert ett från för ha hade han hans har henne hennes hon honom hur här i icke ingen inom inte jag ju kan kunde man med mellan men mig min mina mitt mot mycket ni nu när någon något några och om oss på samma sedan sig sin sina sitta själv skulle som så sådan sådana sådant till under upp ut utan vad var vara varför varit varje vars vart vem vi vid vilka vilkas vilken vilket vår våra vårt än är åt över".split(" ")),e.Pipeline.registerFunction(e.sv.stopWordFilter,"stopWordFilter-sv")}});

master/assets/javascripts/lunr/min/lunr.ta.min.js

@@ -1 +0,0 @@
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master/assets/javascripts/lunr/min/lunr.th.min.js

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master/assets/javascripts/lunr/min/lunr.vi.min.js

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master/assets/javascripts/lunr/min/lunr.zh.min.js

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master/assets/javascripts/lunr/tinyseg.js

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-/**
- * export the module via AMD, CommonJS or as a browser global
- * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js
- */
-;(function (root, factory) {
-    if (typeof define === 'function' && define.amd) {
-        // AMD. Register as an anonymous module.
-        define(factory)
-    } else if (typeof exports === 'object') {
-        /**
-         * Node. Does not work with strict CommonJS, but
-         * only CommonJS-like environments that support module.exports,
-         * like Node.
-         */
-        module.exports = factory()
-    } else {
-        // Browser globals (root is window)
-        factory()(root.lunr);
-    }
-}(this, function () {
-    /**
-     * Just return a value to define the module export.
-     * This example returns an object, but the module
-     * can return a function as the exported value.
-     */
-
-    return function(lunr) {
-        // TinySegmenter 0.1 -- Super compact Japanese tokenizer in Javascript
-        // (c) 2008 Taku Kudo <taku@chasen.org>
-        // TinySegmenter is freely distributable under the terms of a new BSD licence.
-        // For details, see http://chasen.org/~taku/software/TinySegmenter/LICENCE.txt
-
-        function TinySegmenter() {
-          var patterns = {
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-            "[一-龠々〆ヵヶ]":"H",
-            "[ぁ-ん]":"I",
-            "[ァ-ヴーｱ-ﾝﾞｰ]":"K",
-            "[a-zA-Zａ-ｚＡ-Ｚ]":"A",
-            "[0-9０-９]":"N"
-          }
-          this.chartype_ = [];
-          for (var i in patterns) {
-            var regexp = new RegExp(i);
-            this.chartype_.push([regexp, patterns[i]]);
-          }
-
-          this.BIAS__ = -332
-          this.BC1__ = {"HH":6,"II":2461,"KH":406,"OH":-1378};
-          this.BC2__ = {"AA":-3267,"AI":2744,"AN":-878,"HH":-4070,"HM":-1711,"HN":4012,"HO":3761,"IA":1327,"IH":-1184,"II":-1332,"IK":1721,"IO":5492,"KI":3831,"KK":-8741,"MH":-3132,"MK":3334,"OO":-2920};
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-          this.TC1__ = {"AAA":1093,"HHH":1029,"HHM":580,"HII":998,"HOH":-390,"HOM":-331,"IHI":1169,"IOH":-142,"IOI":-1015,"IOM":467,"MMH":187,"OOI":-1832};
-          this.TC2__ = {"HHO":2088,"HII":-1023,"HMM":-1154,"IHI":-1965,"KKH":703,"OII":-2649};
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-          this.TC4__ = {"HHH":-203,"HHI":1344,"HHK":365,"HHM":-122,"HHN":182,"HHO":669,"HIH":804,"HII":679,"HOH":446,"IHH":695,"IHO":-2324,"IIH":321,"III":1497,"IIO":656,"IOO":54,"KAK":4845,"KKA":3386,"KKK":3065,"MHH":-405,"MHI":201,"MMH":-241,"MMM":661,"MOM":841};
-          this.TQ1__ = {"BHHH":-227,"BHHI":316,"BHIH":-132,"BIHH":60,"BIII":1595,"BNHH":-744,"BOHH":225,"BOOO":-908,"OAKK":482,"OHHH":281,"OHIH":249,"OIHI":200,"OIIH":-68};
-          this.TQ2__ = {"BIHH":-1401,"BIII":-1033,"BKAK":-543,"BOOO":-5591};
-          this.TQ3__ = {"BHHH":478,"BHHM":-1073,"BHIH":222,"BHII":-504,"BIIH":-116,"BIII":-105,"BMHI":-863,"BMHM":-464,"BOMH":620,"OHHH":346,"OHHI":1729,"OHII":997,"OHMH":481,"OIHH":623,"OIIH":1344,"OKAK":2792,"OKHH":587,"OKKA":679,"OOHH":110,"OOII":-685};
-          this.TQ4__ = {"BHHH":-721,"BHHM":-3604,"BHII":-966,"BIIH":-607,"BIII":-2181,"OAAA":-2763,"OAKK":180,"OHHH":-294,"OHHI":2446,"OHHO":480,"OHIH":-1573,"OIHH":1935,"OIHI":-493,"OIIH":626,"OIII":-4007,"OKAK":-8156};
-          this.TW1__ = {"につい":-4681,"東京都":2026};
-          this.TW2__ = {"ある程":-2049,"いった":-1256,"ころが":-2434,"しょう":3873,"その後":-4430,"だって":-1049,"ていた":1833,"として":-4657,"ともに":-4517,"もので":1882,"一気に":-792,"初めて":-1512,"同時に":-8097,"大きな":-1255,"対して":-2721,"社会党":-3216};
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-          this.UC1__ = {"A":484,"K":93,"M":645,"O":-505};
-          this.UC2__ = {"A":819,"H":1059,"I":409,"M":3987,"N":5775,"O":646};
-          this.UC3__ = {"A":-1370,"I":2311};
-          this.UC4__ = {"A":-2643,"H":1809,"I":-1032,"K":-3450,"M":3565,"N":3876,"O":6646};
-          this.UC5__ = {"H":313,"I":-1238,"K":-799,"M":539,"O":-831};
-          this.UC6__ = {"H":-506,"I":-253,"K":87,"M":247,"O":-387};
-          this.UP1__ = {"O":-214};
-          this.UP2__ = {"B":69,"O":935};
-          this.UP3__ = {"B":189};
-          this.UQ1__ = {"BH":21,"BI":-12,"BK":-99,"BN":142,"BO":-56,"OH":-95,"OI":477,"OK":410,"OO":-2422};
-          this.UQ2__ = {"BH":216,"BI":113,"OK":1759};
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-          return this;
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-        TinySegmenter.prototype.ts_ = function(v) {
-          if (v) { return v; }
-          return 0;
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-
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-          ctype.push("O");
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-          ctype.push("O");
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-            score += this.ts_(this.UW4__[w4]);
-            score += this.ts_(this.UW5__[w5]);
-            score += this.ts_(this.UW6__[w6]);
-            score += this.ts_(this.BW1__[w2 + w3]);
-            score += this.ts_(this.BW2__[w3 + w4]);
-            score += this.ts_(this.BW3__[w4 + w5]);
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-            score += this.ts_(this.UC4__[c4]);
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-            score += this.ts_(this.TC3__[c3 + c4 + c5]);
-            score += this.ts_(this.TC4__[c4 + c5 + c6]);
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-            score += this.ts_(this.UQ1__[p1 + c1]);
-            score += this.ts_(this.UQ2__[p2 + c2]);
-            score += this.ts_(this.UQ3__[p3 + c3]);
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-            score += this.ts_(this.BQ2__[p2 + c3 + c4]);
-            score += this.ts_(this.BQ3__[p3 + c2 + c3]);
-            score += this.ts_(this.BQ4__[p3 + c3 + c4]);
-            score += this.ts_(this.TQ1__[p2 + c1 + c2 + c3]);
-            score += this.ts_(this.TQ2__[p2 + c2 + c3 + c4]);
-            score += this.ts_(this.TQ3__[p3 + c1 + c2 + c3]);
-            score += this.ts_(this.TQ4__[p3 + c2 + c3 + c4]);
-            var p = "O";
-            if (score > 0) {
-              result.push(word);
-              word = "";
-              p = "B";
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-            p1 = p2;
-            p2 = p3;
-            p3 = p;
-            word += seg[i];
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-          result.push(word);
-
-          return result;
-        }
-
-        lunr.TinySegmenter = TinySegmenter;
-    };
-
-}));

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-<h1 id="introduction">Introduction</h1>
-<p>Sophia is a functional language designed for smart contract development. It is strongly typed and has
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-<p>Sophia is customized for smart contracts, which can be published
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-<h1 id="contract-examples">Contract examples</h1>
-<h2 id="crowdfunding">Crowdfunding</h2>
-<div class="highlight"><pre><span></span><code><span class="cm">/*</span>
-<span class="cm"> * A simple crowd-funding example</span>
-<span class="cm"> */</span>
-<span class="k">contract</span><span class="w"> </span><span class="nf">FundMe</span><span class="w"> </span><span class="ow">=</span>
-
-<span class="w">  </span><span class="k">record</span><span class="w"> </span><span class="n">spend_args</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="n">recipient</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="kt">address</span><span class="p">,</span>
-<span class="w">                        </span><span class="n">amount</span><span class="w">    </span><span class="ow">:</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="p">}</span>
-
-<span class="w">  </span><span class="k">record</span><span class="w"> </span><span class="nb">state</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="n">contributions</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="kt">map</span><span class="p">(</span><span class="kt">address</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="p">),</span>
-<span class="w">                   </span><span class="n">total</span><span class="w">         </span><span class="ow">:</span><span class="w"> </span><span class="kt">int</span><span class="p">,</span>
-<span class="w">                   </span><span class="n">beneficiary</span><span class="w">   </span><span class="ow">:</span><span class="w"> </span><span class="kt">address</span><span class="p">,</span>
-<span class="w">                   </span><span class="n">deadline</span><span class="w">      </span><span class="ow">:</span><span class="w"> </span><span class="kt">int</span><span class="p">,</span>
-<span class="w">                   </span><span class="n">goal</span><span class="w">          </span><span class="ow">:</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="p">}</span>
-
-<span class="w">  </span><span class="k">stateful</span><span class="w"> </span><span class="k">function</span><span class="w"> </span><span class="n">spend</span><span class="p">(</span><span class="n">args</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="n">spend_args</span><span class="p">)</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="nc">Chain</span><span class="p">.</span><span class="n">spend</span><span class="p">(</span><span class="n">args</span><span class="p">.</span><span class="n">recipient</span><span class="p">,</span><span class="w"> </span><span class="n">args</span><span class="p">.</span><span class="n">amount</span><span class="p">)</span>
-
-<span class="w">  </span><span class="k">entrypoint</span><span class="w"> </span><span class="n">init</span><span class="p">(</span><span class="n">beneficiary</span><span class="p">,</span><span class="w"> </span><span class="n">deadline</span><span class="p">,</span><span class="w"> </span><span class="n">goal</span><span class="p">)</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="nb">state</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="p">{</span><span class="w"> </span><span class="n">contributions</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="p">{},</span>
-<span class="w">      </span><span class="n">beneficiary</span><span class="w">   </span><span class="ow">=</span><span class="w"> </span><span class="n">beneficiary</span><span class="p">,</span>
-<span class="w">      </span><span class="n">deadline</span><span class="w">      </span><span class="ow">=</span><span class="w"> </span><span class="n">deadline</span><span class="p">,</span>
-<span class="w">      </span><span class="n">total</span><span class="w">         </span><span class="ow">=</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
-<span class="w">      </span><span class="n">goal</span><span class="w">          </span><span class="ow">=</span><span class="w"> </span><span class="n">goal</span><span class="w"> </span><span class="p">}</span>
-
-<span class="w">  </span><span class="k">function</span><span class="w"> </span><span class="n">is_contributor</span><span class="p">(</span><span class="n">addr</span><span class="p">)</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="nc">Map</span><span class="p">.</span><span class="n">member</span><span class="p">(</span><span class="n">addr</span><span class="p">,</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">contributions</span><span class="p">)</span>
-
-<span class="w">  </span><span class="k">stateful</span><span class="w"> </span><span class="k">entrypoint</span><span class="w"> </span><span class="n">contribute</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="nc">Chain</span><span class="p">.</span><span class="n">block_height</span><span class="w"> </span><span class="ow">&gt;=</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">deadline</span><span class="p">)</span>
-<span class="w">      </span><span class="n">spend</span><span class="p">({</span><span class="w"> </span><span class="n">recipient</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span><span class="p">,</span><span class="w"> </span><span class="n">amount</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">value</span><span class="w"> </span><span class="p">})</span><span class="w"> </span><span class="c1">// Refund money</span>
-<span class="w">      </span><span class="kc">false</span>
-<span class="w">    </span><span class="k">else</span>
-<span class="w">      </span><span class="k">let</span><span class="w"> </span><span class="n">amount</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">        </span><span class="k">switch</span><span class="p">(</span><span class="nc">Map</span><span class="p">.</span><span class="n">lookup</span><span class="p">(</span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span><span class="p">,</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">contributions</span><span class="p">))</span>
-<span class="w">          </span><span class="nf">None</span><span class="w">    </span><span class="ow">=&gt;</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">value</span>
-<span class="w">          </span><span class="nf">Some</span><span class="p">(</span><span class="n">n</span><span class="p">)</span><span class="w"> </span><span class="ow">=&gt;</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="ow">+</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">value</span>
-<span class="w">      </span><span class="nb">put</span><span class="p">(</span><span class="nb">state</span><span class="p">{</span><span class="w"> </span><span class="n">contributions</span><span class="p">[</span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span><span class="p">]</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">amount</span><span class="p">,</span>
-<span class="w">                 </span><span class="n">total</span><span class="w"> </span><span class="ow">@</span><span class="w"> </span><span class="n">tot</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">tot</span><span class="w"> </span><span class="ow">+</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">value</span><span class="w"> </span><span class="p">})</span>
-<span class="w">      </span><span class="kc">true</span>
-
-<span class="w">  </span><span class="k">stateful</span><span class="w"> </span><span class="k">entrypoint</span><span class="w"> </span><span class="n">withdraw</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="nc">Chain</span><span class="p">.</span><span class="n">block_height</span><span class="w"> </span><span class="ow">&lt;</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">deadline</span><span class="p">)</span>
-<span class="w">      </span><span class="nb">abort</span><span class="p">(</span><span class="s2">&quot;Cannot withdraw before deadline&quot;</span><span class="p">)</span>
-<span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span><span class="w"> </span><span class="ow">==</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">beneficiary</span><span class="p">)</span>
-<span class="w">      </span><span class="n">withdraw_beneficiary</span><span class="p">()</span>
-<span class="w">    </span><span class="k">elif</span><span class="p">(</span><span class="n">is_contributor</span><span class="p">(</span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span><span class="p">))</span>
-<span class="w">      </span><span class="n">withdraw_contributor</span><span class="p">()</span>
-<span class="w">    </span><span class="k">else</span>
-<span class="w">      </span><span class="nb">abort</span><span class="p">(</span><span class="s2">&quot;Not a contributor or beneficiary&quot;</span><span class="p">)</span>
-
-<span class="w">  </span><span class="k">stateful</span><span class="w"> </span><span class="k">function</span><span class="w"> </span><span class="n">withdraw_beneficiary</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="nb">require</span><span class="p">(</span><span class="nb">state</span><span class="p">.</span><span class="n">total</span><span class="w"> </span><span class="ow">&gt;=</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">goal</span><span class="p">,</span><span class="w"> </span><span class="s2">&quot;Project was not funded&quot;</span><span class="p">)</span>
-<span class="w">    </span><span class="n">spend</span><span class="p">({</span><span class="n">recipient</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">beneficiary</span><span class="p">,</span>
-<span class="w">           </span><span class="n">amount</span><span class="w">    </span><span class="ow">=</span><span class="w"> </span><span class="nc">Contract</span><span class="p">.</span><span class="n">balance</span><span class="w"> </span><span class="p">})</span>
-
-<span class="w">  </span><span class="k">stateful</span><span class="w"> </span><span class="k">function</span><span class="w"> </span><span class="n">withdraw_contributor</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="nb">state</span><span class="p">.</span><span class="n">total</span><span class="w"> </span><span class="ow">&gt;=</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">goal</span><span class="p">)</span>
-<span class="w">      </span><span class="nb">abort</span><span class="p">(</span><span class="s2">&quot;Project was funded&quot;</span><span class="p">)</span>
-<span class="w">    </span><span class="k">let</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nc">Call</span><span class="p">.</span><span class="n">caller</span>
-<span class="w">    </span><span class="n">spend</span><span class="p">({</span><span class="n">recipient</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">to</span><span class="p">,</span>
-<span class="w">           </span><span class="n">amount</span><span class="w">    </span><span class="ow">=</span><span class="w"> </span><span class="nb">state</span><span class="p">.</span><span class="n">contributions</span><span class="p">[</span><span class="n">to</span><span class="p">]})</span>
-<span class="w">    </span><span class="nb">put</span><span class="p">(</span><span class="nb">state</span><span class="p">{</span><span class="w"> </span><span class="n">contributions</span><span class="w"> </span><span class="ow">@</span><span class="w"> </span><span class="n">c</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nc">Map</span><span class="p">.</span><span class="n">delete</span><span class="p">(</span><span class="n">to</span><span class="p">,</span><span class="w"> </span><span class="n">c</span><span class="p">)</span><span class="w"> </span><span class="p">})</span>
-</code></pre></div>
-<h2 id="repositories">Repositories</h2>
-<p>This is a list with repositories that include smart contracts written in Sophia:</p>
-<ul>
-<li><a href="https://github.com/aeternity/aepp-sophia-examples">aepp-sophia-examples</a><ul>
-<li>A repository that contains lots of different examples. The functionality of these examples is - to some extent - also covered by tests written in JavaScript.</li>
-</ul>
-</li>
-</ul>
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-<h1 id="syntax">Syntax</h1>
-<h2 id="lexical-syntax">Lexical syntax</h2>
-<h3 id="comments">Comments</h3>
-<p>Single line comments start with <code>//</code> and block comments are enclosed in <code>/*</code>
-and <code>*/</code> and can be nested.</p>
-<h3 id="keywords">Keywords</h3>
-<div class="highlight"><pre><span></span><code>contract include let switch type record datatype if elif else function
-stateful payable true false mod public entrypoint private indexed namespace
-interface main using as for hiding
-</code></pre></div>
-<h3 id="tokens">Tokens</h3>
-<ul>
-<li><code>Id = [a-z_][A-Za-z0-9_']*</code> identifiers start with a lower case letter.</li>
-<li><code>Con = [A-Z][A-Za-z0-9_']*</code> constructors start with an upper case letter.</li>
-<li><code>QId = (Con\.)+Id</code> qualified identifiers (e.g. <code>Map.member</code>)</li>
-<li><code>QCon = (Con\.)+Con</code> qualified constructor</li>
-<li><code>TVar = 'Id</code> type variable (e.g <code>'a</code>, <code>'b</code>)</li>
-<li><code>Int = [0-9]+(_[0-9]+)*|0x[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*</code> integer literal with optional <code>_</code> separators</li>
-<li><code>Bytes = #[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*</code> byte array literal with optional <code>_</code> separators</li>
-<li><code>String</code> string literal enclosed in <code>"</code> with escape character <code>\</code></li>
-<li><code>Char</code> character literal enclosed in <code>'</code> with escape character <code>\</code></li>
-<li><code>AccountAddress</code> base58-encoded 32 byte account pubkey with <code>ak_</code> prefix</li>
-<li><code>ContractAddress</code> base58-encoded 32 byte contract address with <code>ct_</code> prefix</li>
-<li><code>OracleAddress</code> base58-encoded 32 byte oracle address with <code>ok_</code> prefix</li>
-<li><code>OracleQueryId</code> base58-encoded 32 byte oracle query id with <code>oq_</code> prefix</li>
-</ul>
-<p>Valid string escape codes are</p>
-<table>
-<thead>
-<tr>
-<th>Escape</th>
-<th>ASCII</th>
-<th></th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td><code>\b</code></td>
-<td>8</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\t</code></td>
-<td>9</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\n</code></td>
-<td>10</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\v</code></td>
-<td>11</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\f</code></td>
-<td>12</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\r</code></td>
-<td>13</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\e</code></td>
-<td>27</td>
-<td></td>
-</tr>
-<tr>
-<td><code>\xHexDigits</code></td>
-<td><em>HexDigits</em></td>
-<td></td>
-</tr>
-</tbody>
-</table>
-<p>See the <a href="https://github.com/aeternity/protocol/blob/master/node/api/api_encoding.md">identifier encoding scheme</a> for the
-details on the base58 literals.</p>
-<h2 id="layout-blocks">Layout blocks</h2>
-<p>Sophia uses Python-style layout rules to group declarations and statements. A
-layout block with more than one element must start on a separate line and be
-indented more than the currently enclosing layout block. Blocks with a single
-element can be written on the same line as the previous token.</p>
-<p>Each element of the block must share the same indentation and no part of an
-element may be indented less than the indentation of the block. For instance</p>
-<div class="highlight"><pre><span></span><code><span class="k">contract</span><span class="w"> </span><span class="nf">Layout</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">  </span><span class="k">function</span><span class="w"> </span><span class="n">foo</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="mi">0</span><span class="w">  </span><span class="c1">// no layout</span>
-<span class="w">  </span><span class="k">function</span><span class="w"> </span><span class="n">bar</span><span class="p">()</span><span class="w"> </span><span class="ow">=</span><span class="w">    </span><span class="c1">// layout block starts on next line</span>
-<span class="w">    </span><span class="k">let</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">foo</span><span class="p">()</span><span class="w">     </span><span class="c1">// indented more than 2 spaces</span>
-<span class="w">    </span><span class="n">x</span>
-<span class="w">     </span><span class="ow">+</span><span class="w"> </span><span class="mi">1</span><span class="w">              </span><span class="c1">// the &#39;+&#39; is indented more than the &#39;x&#39;</span>
-</code></pre></div>
-<h2 id="notation">Notation</h2>
-<p>In describing the syntax below, we use the following conventions:</p>
-<ul>
-<li>Upper-case identifiers denote non-terminals (like <code>Expr</code>) or terminals with
-  some associated value (like <code>Id</code>).</li>
-<li>Keywords and symbols are enclosed in single quotes: <code>'let'</code> or <code>'='</code>.</li>
-<li>Choices are separated by vertical bars: <code>|</code>.</li>
-<li>Optional elements are enclosed in <code>[</code> square brackets <code>]</code>.</li>
-<li><code>(</code> Parentheses <code>)</code> are used for grouping.</li>
-<li>Zero or more repetitions are denoted by a postfix <code>*</code>, and one or more
-  repetitions by a <code>+</code>.</li>
-<li><code>Block(X)</code> denotes a layout block of <code>X</code>s.</li>
-<li><code>Sep(X, S)</code> is short for <code>[X (S X)*]</code>, i.e. a possibly empty sequence of <code>X</code>s
-  separated by <code>S</code>s.</li>
-<li><code>Sep1(X, S)</code> is short for <code>X (S X)*</code>, i.e. same as <code>Sep</code>, but must not be empty.</li>
-</ul>
-<h2 id="declarations">Declarations</h2>
-<p>A Sophia file consists of a sequence of <em>declarations</em> in a layout block.</p>
-<div class="highlight"><pre><span></span><code><span class="n">File</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">TopDecl</span><span class="p">)</span>
-
-<span class="n">TopDecl</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="p">[</span><span class="err">&#39;</span><span class="n">payable</span><span class="err">&#39;</span><span class="p">]</span><span class="w"> </span><span class="p">[</span><span class="err">&#39;</span><span class="n">main</span><span class="err">&#39;</span><span class="p">]</span><span class="w"> </span><span class="err">&#39;</span><span class="n">contract</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="p">[</span><span class="n">Implement</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Decl</span><span class="p">)</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">contract</span><span class="sc">&#39; &#39;</span><span class="n">interface</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="p">[</span><span class="n">Implement</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Decl</span><span class="p">)</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">namespace</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Decl</span><span class="p">)</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;@</span><span class="n">compiler</span><span class="err">&#39;</span><span class="w"> </span><span class="n">PragmaOp</span><span class="w"> </span><span class="n">Version</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">include</span><span class="err">&#39;</span><span class="w"> </span><span class="n">String</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="n">Using</span>
-
-<span class="n">Implement</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Con</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span>
-
-<span class="n">Decl</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="n">type</span><span class="err">&#39;</span><span class="w">     </span><span class="n">Id</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">TVar</span><span class="o">*</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">TypeAlias</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">record</span><span class="err">&#39;</span><span class="w">   </span><span class="n">Id</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">TVar</span><span class="o">*</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">RecordType</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">datatype</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">TVar</span><span class="o">*</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">DataType</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">let</span><span class="err">&#39;</span><span class="w">      </span><span class="n">Id</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="p">]</span><span class="w">      </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Expr</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="p">(</span><span class="n">EModifier</span><span class="o">*</span><span class="w"> </span><span class="err">&#39;</span><span class="n">entrypoint</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">FModifier</span><span class="o">*</span><span class="w"> </span><span class="err">&#39;</span><span class="n">function</span><span class="err">&#39;</span><span class="p">)</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">FunDecl</span><span class="p">)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Using</span>
-
-<span class="n">FunDecl</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="w">                             </span><span class="c1">// Type signature</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="n">Args</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span><span class="w">      </span><span class="c1">// Definition</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="n">Args</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="p">]</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">GuardedDef</span><span class="p">)</span><span class="w">    </span><span class="c1">// Guarded definitions</span>
-
-<span class="n">GuardedDef</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;|&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Expr</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-
-<span class="n">Using</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="n">using</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="p">[</span><span class="err">&#39;</span><span class="n">as</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Con</span><span class="p">]</span><span class="w"> </span><span class="p">[</span><span class="n">UsingParts</span><span class="p">]</span>
-<span class="n">UsingParts</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="k">for</span><span class="sc">&#39; &#39;</span><span class="p">[</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Id</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;]&#39;</span>
-<span class="w">             </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">hiding</span><span class="sc">&#39; &#39;</span><span class="p">[</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Id</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;]&#39;</span>
-
-<span class="n">PragmaOp</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;&lt;&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&lt;</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">==</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">&gt;=</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;&gt;&#39;</span>
-<span class="n">Version</span><span class="w">  </span><span class="o">::=</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Int</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;.&#39;</span><span class="p">)</span>
-
-<span class="n">EModifier</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="n">payable</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">stateful</span><span class="err">&#39;</span>
-<span class="n">FModifier</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="n">stateful</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">private</span><span class="err">&#39;</span>
-
-<span class="n">Args</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Pattern</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span>
-</code></pre></div>
-<p>Contract declarations must appear at the top-level.</p>
-<p>For example,
-<div class="highlight"><pre><span></span><code><span class="k">contract</span><span class="w"> </span><span class="nf">Test</span><span class="w"> </span><span class="ow">=</span>
-<span class="w">  </span><span class="k">type</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="kt">int</span>
-<span class="w">  </span><span class="k">entrypoint</span><span class="w"> </span><span class="n">add</span><span class="w"> </span><span class="p">(</span><span class="n">x</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="n">t</span><span class="p">,</span><span class="w"> </span><span class="n">y</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="n">t</span><span class="p">)</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="ow">+</span><span class="w"> </span><span class="n">y</span>
-</code></pre></div></p>
-<p>There are three forms of type declarations: type aliases (declared with the
-<code>type</code> keyword), record type definitions (<code>record</code>) and data type definitions
-(<code>datatype</code>):</p>
-<div class="highlight"><pre><span></span><code><span class="n">TypeAlias</span><span class="w">  </span><span class="o">::=</span><span class="w"> </span><span class="n">Type</span>
-<span class="n">RecordType</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;{&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">FieldType</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;}&#39;</span>
-<span class="n">DataType</span><span class="w">   </span><span class="o">::=</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">ConDecl</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;|&#39;</span><span class="p">)</span>
-
-<span class="n">FieldType</span><span class="w">  </span><span class="o">::=</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span>
-<span class="n">ConDecl</span><span class="w">    </span><span class="o">::=</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Type</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="p">]</span>
-</code></pre></div>
-<p>For example,
-<div class="highlight"><pre><span></span><code><span class="k">record</span><span class="w">   </span><span class="n">point</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">)</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="p">{</span><span class="n">x</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="nv">&#39;a</span><span class="p">,</span><span class="w"> </span><span class="n">y</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="nv">&#39;a</span><span class="p">}</span>
-<span class="k">datatype</span><span class="w"> </span><span class="n">shape</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">)</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="nf">Circle</span><span class="p">(</span><span class="n">point</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">),</span><span class="w"> </span><span class="nv">&#39;a</span><span class="p">)</span><span class="w"> </span><span class="ow">|</span><span class="w"> </span><span class="nf">Rect</span><span class="p">(</span><span class="n">point</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">),</span><span class="w"> </span><span class="n">point</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">))</span>
-<span class="k">type</span><span class="w">     </span><span class="n">int_shape</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="n">shape</span><span class="p">(</span><span class="kt">int</span><span class="p">)</span>
-</code></pre></div></p>
-<h2 id="types">Types</h2>
-<div class="highlight"><pre><span></span><code><span class="n">Type</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Domain</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&gt;</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Type</span><span class="w">             </span><span class="c1">// Function type</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Type</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Type</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">  </span><span class="c1">// Type application</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Type</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">                 </span><span class="c1">// Parens</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">unit</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Type</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;*&#39;</span><span class="p">)</span><span class="w">      </span><span class="c1">// Tuples</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">QId</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">TVar</span>
-
-<span class="n">Domain</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Type</span><span class="w">                       </span><span class="c1">// Single argument</span>
-<span class="w">         </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Type</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">     </span><span class="c1">// Multiple arguments</span>
-</code></pre></div>
-<p>The function type arrow associates to the right.</p>
-<p>Example,
-<div class="highlight"><pre><span></span><code><span class="nv">&#39;a</span><span class="w"> </span><span class="ow">=&gt;</span><span class="w"> </span><span class="kt">list</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">)</span><span class="w"> </span><span class="ow">=&gt;</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="ow">*</span><span class="w"> </span><span class="kt">list</span><span class="p">(</span><span class="nv">&#39;a</span><span class="p">))</span>
-</code></pre></div></p>
-<h2 id="statements">Statements</h2>
-<p>Function bodies are blocks of <em>statements</em>, where a statement is one of the following</p>
-<div class="highlight"><pre><span></span><code><span class="n">Stmt</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="k">switch</span><span class="sc">&#39; &#39;</span><span class="p">(</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Case</span><span class="p">)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="k">if</span><span class="sc">&#39; &#39;</span><span class="p">(</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">elif</span><span class="sc">&#39; &#39;</span><span class="p">(</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="k">else</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">let</span><span class="err">&#39;</span><span class="w"> </span><span class="n">LetDef</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Using</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span>
-
-<span class="n">LetDef</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="n">Args</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="p">]</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span><span class="w">   </span><span class="c1">// Function definition</span>
-<span class="w">         </span><span class="o">|</span><span class="w"> </span><span class="n">Pattern</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span><span class="w">              </span><span class="c1">// Value definition</span>
-
-<span class="n">Case</span><span class="w">    </span><span class="o">::=</span><span class="w"> </span><span class="n">Pattern</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&gt;</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-<span class="w">          </span><span class="o">|</span><span class="w"> </span><span class="n">Pattern</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">GuardedCase</span><span class="p">)</span>
-
-<span class="n">GuardedCase</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;|&#39;</span><span class="w"> </span><span class="n">Sep1</span><span class="p">(</span><span class="n">Expr</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&gt;</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span>
-
-<span class="n">Pattern</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Expr</span>
-</code></pre></div>
-<p><code>if</code> statements can be followed by zero or more <code>elif</code> statements and an optional final <code>else</code> statement. For example,</p>
-<div class="highlight"><pre><span></span><code><span class="k">let</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="ow">:</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="ow">=</span><span class="w"> </span><span class="mi">4</span>
-<span class="k">switch</span><span class="p">(</span><span class="n">f</span><span class="p">(</span><span class="n">x</span><span class="p">))</span>
-<span class="w">  </span><span class="nf">None</span><span class="w"> </span><span class="ow">=&gt;</span><span class="w"> </span><span class="mi">0</span>
-<span class="w">  </span><span class="nf">Some</span><span class="p">(</span><span class="n">y</span><span class="p">)</span><span class="w"> </span><span class="ow">=&gt;</span>
-<span class="w">    </span><span class="k">if</span><span class="p">(</span><span class="n">y</span><span class="w"> </span><span class="ow">&gt;</span><span class="w"> </span><span class="mi">10</span><span class="p">)</span>
-<span class="w">      </span><span class="s2">&quot;too big&quot;</span>
-<span class="w">    </span><span class="k">elif</span><span class="p">(</span><span class="n">y</span><span class="w"> </span><span class="ow">&lt;</span><span class="w"> </span><span class="mi">3</span><span class="p">)</span>
-<span class="w">      </span><span class="s2">&quot;too small&quot;</span>
-<span class="w">    </span><span class="k">else</span>
-<span class="w">      </span><span class="s2">&quot;just right&quot;</span>
-</code></pre></div>
-<h2 id="expressions">Expressions</h2>
-<div class="highlight"><pre><span></span><code><span class="n">Expr</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">LamArgs</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&gt;</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Block</span><span class="p">(</span><span class="n">Stmt</span><span class="p">)</span><span class="w">   </span><span class="c1">// Anonymous function    (x) =&gt; x + 1</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">BinOp</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">                      </span><span class="c1">// Operator lambda       (+)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="k">if</span><span class="sc">&#39; &#39;</span><span class="p">(</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="err">&#39;</span><span class="k">else</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="c1">// If expression         if(x &lt; y) y else x</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="w">                      </span><span class="c1">// Type annotation       5 : int</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="n">BinOp</span><span class="w"> </span><span class="n">Expr</span><span class="w">                    </span><span class="c1">// Binary operator       x + y</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">UnOp</span><span class="w"> </span><span class="n">Expr</span><span class="w">                          </span><span class="c1">// Unary operator        ! b</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Expr</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">        </span><span class="c1">// Application           f(x, y)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;.&#39;</span><span class="w"> </span><span class="n">Id</span><span class="w">                        </span><span class="c1">// Projection            state.x</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;]&#39;</span><span class="w">                  </span><span class="c1">// Map lookup            map[key]</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;{&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">FieldUpdate</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;}&#39;</span><span class="w"> </span><span class="c1">// Record or map update  r{ fld[key].x = y }</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Expr</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;]&#39;</span><span class="w">             </span><span class="c1">// List                  [1, 2, 3]</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;|&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">Generator</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;]&#39;</span>
-<span class="w">                                            </span><span class="c1">// List comprehension    [k | x &lt;- [1], if (f(x)), let k = x+1]</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="err">&#39;</span><span class="p">..</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;]&#39;</span><span class="w">             </span><span class="c1">// List range            [1..n]</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;{&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">FieldUpdate</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;}&#39;</span><span class="w">      </span><span class="c1">// Record or map value   {x = 0, y = 1}, {[key] = val}</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">                       </span><span class="c1">// Parens                (1 + 2) * 3</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">              </span><span class="c1">// Assign pattern        (y = x::_)</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">Con</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">QId</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">QCon</span><span class="w">              </span><span class="c1">// Identifiers           x, None, Map.member, AELib.Token</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Int</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">Bytes</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">String</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">Char</span><span class="w">        </span><span class="c1">// Literals              123, 0xff, #00abc123, &quot;foo&quot;, &#39;%&#39;</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">AccountAddress</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">ContractAddress</span><span class="w">   </span><span class="c1">// Chain identifiers</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">OracleAddress</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">OracleQueryId</span><span class="w">      </span><span class="c1">// Chain identifiers</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">???</span><span class="err">&#39;</span><span class="w">                              </span><span class="c1">// Hole expression       1 + ???</span>
-
-<span class="n">Generator</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Pattern</span><span class="w"> </span><span class="err">&#39;</span><span class="o">&lt;-</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w">   </span><span class="c1">// Generator</span>
-<span class="w">            </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="k">if</span><span class="sc">&#39; &#39;</span><span class="p">(</span><span class="err">&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;)&#39;</span><span class="w">   </span><span class="c1">// Guard</span>
-<span class="w">            </span><span class="o">|</span><span class="w"> </span><span class="n">LetDef</span><span class="w">              </span><span class="c1">// Definition</span>
-
-<span class="n">LamArgs</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;(&#39;</span><span class="w"> </span><span class="n">Sep</span><span class="p">(</span><span class="n">LamArg</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;,&#39;</span><span class="p">)</span><span class="w"> </span><span class="sc">&#39;)&#39;</span>
-<span class="n">LamArg</span><span class="w">  </span><span class="o">::=</span><span class="w"> </span><span class="n">Id</span><span class="w"> </span><span class="p">[</span><span class="sc">&#39;:&#39;</span><span class="w"> </span><span class="n">Type</span><span class="p">]</span>
-
-<span class="n">FieldUpdate</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Path</span><span class="w"> </span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="n">Expr</span>
-<span class="n">Path</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="n">Id</span><span class="w">                 </span><span class="c1">// Record field</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;]&#39;</span><span class="w">       </span><span class="c1">// Map key</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Path</span><span class="w"> </span><span class="sc">&#39;.&#39;</span><span class="w"> </span><span class="n">Id</span><span class="w">        </span><span class="c1">// Nested record field</span>
-<span class="w">       </span><span class="o">|</span><span class="w"> </span><span class="n">Path</span><span class="w"> </span><span class="sc">&#39;[&#39;</span><span class="w"> </span><span class="n">Expr</span><span class="w"> </span><span class="sc">&#39;]&#39;</span><span class="w">  </span><span class="c1">// Nested map key</span>
-
-<span class="n">BinOp</span><span class="w"> </span><span class="o">::=</span><span class="w"> </span><span class="err">&#39;</span><span class="o">||</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">&amp;&amp;</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;&lt;&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;&gt;&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">=&lt;</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">&gt;=</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">==</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">!=</span><span class="err">&#39;</span>
-<span class="w">        </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">::</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">++</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;+&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;-&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;*&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;/&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="n">mod</span><span class="err">&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;^&#39;</span>
-<span class="w">        </span><span class="o">|</span><span class="w"> </span><span class="err">&#39;</span><span class="o">|&gt;</span><span class="err">&#39;</span>
-<span class="n">UnOp</span><span class="w">  </span><span class="o">::=</span><span class="w"> </span><span class="sc">&#39;-&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;!&#39;</span>
-</code></pre></div>
-<h2 id="operators-types">Operators types</h2>
-<table>
-<thead>
-<tr>
-<th>Operators</th>
-<th>Type</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td><code>-</code> <code>+</code> <code>*</code> <code>/</code> <code>mod</code> <code>^</code></td>
-<td>arithmetic operators</td>
-</tr>
-<tr>
-<td><code>!</code> <code>&amp;&amp;</code> <code>||</code></td>
-<td>logical operators</td>
-</tr>
-<tr>
-<td><code>==</code> <code>!=</code> <code>&lt;</code> <code>&gt;</code> <code>=&lt;</code> <code>&gt;=</code></td>
-<td>comparison operators</td>
-</tr>
-<tr>
-<td><code>::</code> <code>++</code></td>
-<td>list operators</td>
-</tr>
-<tr>
-<td><code>|&gt;</code></td>
-<td>functional operators</td>
-</tr>
-</tbody>
-</table>
-<h2 id="operator-precedence">Operator precedence</h2>
-<p>In order of highest to lowest precedence.</p>
-<table>
-<thead>
-<tr>
-<th>Operators</th>
-<th>Associativity</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td><code>!</code></td>
-<td>right</td>
-</tr>
-<tr>
-<td><code>^</code></td>
-<td>left</td>
-</tr>
-<tr>
-<td><code>*</code> <code>/</code> <code>mod</code></td>
-<td>left</td>
-</tr>
-<tr>
-<td><code>-</code> (unary)</td>
-<td>right</td>
-</tr>
-<tr>
-<td><code>+</code> <code>-</code></td>
-<td>left</td>
-</tr>
-<tr>
-<td><code>::</code> <code>++</code></td>
-<td>right</td>
-</tr>
-<tr>
-<td><code>&lt;</code> <code>&gt;</code> <code>=&lt;</code> <code>&gt;=</code> <code>==</code> <code>!=</code></td>
-<td>none</td>
-</tr>
-<tr>
-<td><code>&amp;&amp;</code></td>
-<td>right</td>
-</tr>
-<tr>
-<td><code>||</code></td>
-<td>right</td>
-</tr>
-<tr>
-<td><code>|&gt;</code></td>
-<td>left</td>
-</tr>
-</tbody>
-</table>
-
-
-
-
-
-                
-              </article>
-            </div>
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-  </body>
-</html>

priv/stdlib/BLS12_381.aes

@@ -0,0 +1,68 @@
+namespace BLS12_381 =
+  type fr    = MCL_BLS12_381.fr
+  type fp    = MCL_BLS12_381.fp
+  record fp2 = { x1 : fp, x2 : fp }
+  record g1  = { x : fp, y : fp, z : fp }
+  record g2  = { x : fp2, y : fp2, z : fp2 }
+  record gt  = { x1 : fp, x2 : fp, x3 : fp, x4 : fp, x5 : fp, x6 : fp,
+                 x7 : fp, x8 : fp, x9 : fp, x10 : fp, x11 : fp, x12 : fp }
+
+  function pairing_check(us : list(g1), vs : list(g2)) =
+    switch((us, vs))
+      ([], []) => true
+      (x :: xs, y :: ys) => pairing_check_(pairing(x, y), xs, ys)
+
+  function pairing_check_(acc : gt, us : list(g1), vs : list(g2)) =
+    switch((us, vs))
+      ([], []) => gt_is_one(acc)
+      (x :: xs, y :: ys) =>
+        pairing_check_(gt_mul(acc, pairing(x, y)), xs, ys)
+
+  function int_to_fr(x : int) = MCL_BLS12_381.int_to_fr(x)
+  function int_to_fp(x : int) = MCL_BLS12_381.int_to_fp(x)
+  function fr_to_int(x : fr)  = MCL_BLS12_381.fr_to_int(x)
+  function fp_to_int(x : fp)  = MCL_BLS12_381.fp_to_int(x)
+
+  function mk_g1(x : int, y : int, z : int) : g1 =
+    { x = int_to_fp(x), y = int_to_fp(y), z = int_to_fp(z) }
+
+  function mk_g2(x1 : int, x2 : int, y1 : int, y2 : int, z1 : int, z2 : int) : g2 =
+    { x = {x1 = int_to_fp(x1), x2 = int_to_fp(x2)},
+      y = {x1 = int_to_fp(y1), x2 = int_to_fp(y2)},
+      z = {x1 = int_to_fp(z1), x2 = int_to_fp(z2)} }
+
+  function pack_g1(t) = switch(t)
+                          (x, y, z) => {x = x, y = y, z = z} : g1
+  function pack_g2(t) = switch(t)
+                          ((x1, x2), (y1, y2), (z1, z2)) =>
+                            {x = {x1 = x1, x2 = x2}, y = {x1 = y1, x2 = y2}, z = {x1 = z1, x2 = z2}} : g2
+  function pack_gt(t) = switch(t)
+                          (x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12) =>
+                            {x1 = x1, x2 = x2, x3 = x3, x4 = x4, x5 = x5, x6 = x6,
+                             x7 = x7, x8 = x8, x9 = x9, x10 = x10, x11 = x11, x12 = x12} : gt
+
+  function g1_neg(p : g1)         = pack_g1(MCL_BLS12_381.g1_neg((p.x, p.y, p.z)))
+  function g1_norm(p : g1)        = pack_g1(MCL_BLS12_381.g1_norm((p.x, p.y, p.z)))
+  function g1_valid(p : g1)       = MCL_BLS12_381.g1_valid((p.x, p.y, p.z))
+  function g1_is_zero(p : g1)     = MCL_BLS12_381.g1_is_zero((p.x, p.y, p.z))
+  function g1_add(p : g1, q : g1) = pack_g1(MCL_BLS12_381.g1_add((p.x, p.y, p.z), (q.x, q.y, q.z)))
+  function g1_mul(k : fr, p : g1) = pack_g1(MCL_BLS12_381.g1_mul(k, (p.x, p.y, p.z)))
+
+  function g2_neg(p : g2)         = pack_g2(MCL_BLS12_381.g2_neg(((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2))))
+  function g2_norm(p : g2)        = pack_g2(MCL_BLS12_381.g2_norm(((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2))))
+  function g2_valid(p : g2)       = MCL_BLS12_381.g2_valid(((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2)))
+  function g2_is_zero(p : g2)     = MCL_BLS12_381.g2_is_zero(((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2)))
+  function g2_add(p : g2, q : g2) = pack_g2(MCL_BLS12_381.g2_add(((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2)),
+                                                                 ((q.x.x1, q.x.x2), (q.y.x1, q.y.x2), (q.z.x1, q.z.x2))))
+  function g2_mul(k : fr, p : g2) = pack_g2(MCL_BLS12_381.g2_mul(k, ((p.x.x1, p.x.x2), (p.y.x1, p.y.x2), (p.z.x1, p.z.x2))))
+
+  function gt_inv(p : gt)              = pack_gt(MCL_BLS12_381.gt_inv((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12)))
+  function gt_add(p : gt, q : gt)      = pack_gt(MCL_BLS12_381.gt_add((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12),
+                                                                      (q.x1, q.x2, q.x3, q.x4, q.x5, q.x6, q.x7, q.x8, q.x9, q.x10, q.x11, q.x12)))
+  function gt_mul(p : gt, q : gt)      = pack_gt(MCL_BLS12_381.gt_mul((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12),
+                                                                      (q.x1, q.x2, q.x3, q.x4, q.x5, q.x6, q.x7, q.x8, q.x9, q.x10, q.x11, q.x12)))
+  function gt_pow(p : gt, k : fr)      = pack_gt(MCL_BLS12_381.gt_pow((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12), k))
+  function gt_is_one(p : gt)           = MCL_BLS12_381.gt_is_one((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12))
+  function pairing(p : g1, q : g2)     = pack_gt(MCL_BLS12_381.pairing((p.x, p.y, p.z), ((q.x.x1, q.x.x2), (q.y.x1, q.y.x2), (q.z.x1, q.z.x2))))
+  function miller_loop(p : g1, q : g2) = pack_gt(MCL_BLS12_381.miller_loop((p.x, p.y, p.z), ((q.x.x1, q.x.x2), (q.y.x1, q.y.x2), (q.z.x1, q.z.x2))))
+  function final_exp(p : gt)           = pack_gt(MCL_BLS12_381.final_exp((p.x1, p.x2, p.x3, p.x4, p.x5, p.x6, p.x7, p.x8, p.x9, p.x10, p.x11, p.x12)))

priv/stdlib/Bitwise.aes

@@ -0,0 +1,126 @@
+@compiler >= 4.3
+
+namespace Bitwise =
+
+  // bit shift 'x' right 'n' postions
+  function bsr(n : int, x : int) : int =
+    let step = 2^n
+    let res  = x / step
+    if (x >= 0 || x mod step == 0)
+      res
+    else
+      res - 1
+
+  // bit shift 'x' left 'n' positions
+  function bsl(n : int, x : int) : int =
+    x * 2^n
+
+  // bit shift 'x' left 'n' positions, limit at 'lim' bits
+  function bsli(n : int, x : int, lim : int) : int =
+    (x * 2^n) mod (2^lim)
+
+  // bitwise 'and' for arbitrary precision integers
+  function band(a : int, b : int) : int =
+      if (a >= 0 && b >= 0)
+        uband_(a, b)
+      elif (b >= 0)
+        ubnand_(b, -1 - a)
+      elif (a >= 0)
+        ubnand_(a, -1 - b)
+      else
+        -1 - ubor_(-1 - a, -1 - b)
+
+  // bitwise 'or' for arbitrary precision integers
+  function
+    bor : (int, int) => int
+    bor(0, b) = b
+    bor(a, 0) = a
+    bor(a : int, b : int) : int =
+      if (a >= 0 && b >= 0)
+        ubor_(a, b)
+      elif (b >= 0)
+        -1 - ubnand_(-1 - a, b)
+      elif (a >= 0)
+        -1 - ubnand_(-1 - b, a)
+      else
+        -1 - uband_(-1 - a, -1 - b)
+
+  // bitwise 'xor' for arbitrary precision integers
+  function
+    bxor : (int, int) => int
+    bxor(0, b) = b
+    bxor(a, 0) = a
+    bxor(a, b) =
+      if (a >= 0 && b >= 0)
+        ubxor_(a, b)
+      elif (b >= 0)
+        -1 - ubxor_(-1 - a, b)
+      elif (a >= 0)
+        -1 - ubxor_(a, -1 - b)
+      else
+        ubxor_(-1 - a, -1 - b)
+
+  // bitwise 'not' for arbitrary precision integers
+  function bnot(a : int) = bxor(a, -1)
+
+  // Bitwise 'and' for non-negative integers
+  function uband(a : int, b : int) : int =
+    require(a >= 0 && b >= 0, "uband is only defined for non-negative integers")
+    switch((a, b))
+      (0, _) => 0
+      (_, 0) => 0
+      _      => uband__(a, b, 1, 0)
+
+  private function uband_(a, b) = uband__(a, b, 1, 0)
+
+  private function
+    uband__(0, b, val, acc) = acc
+    uband__(a, 0, val, acc) = acc
+    uband__(a, b, val, acc) =
+      switch (a mod 2 + b mod 2)
+        2 => uband__(a / 2, b / 2, val * 2, acc + val)
+        _ => uband__(a / 2, b / 2, val * 2, acc)
+
+  // Bitwise 'or' for non-negative integers
+  function ubor(a, b) =
+    require(a >= 0 && b >= 0, "ubor is only defined for non-negative integers")
+    switch((a, b))
+      (0, _) => b
+      (_, 0) => a
+      _      => ubor__(a, b, 1, 0)
+
+  private function ubor_(a, b) = ubor__(a, b, 1, 0)
+
+  private function
+    ubor__(0, 0, val, acc) = acc
+    ubor__(a, b, val, acc) =
+      switch (a mod 2 + b mod 2)
+        0 => ubor__(a / 2, b / 2, val * 2, acc)
+        _ => ubor__(a / 2, b / 2, val * 2, acc + val)
+
+  //Bitwise 'xor' for non-negative integers
+  function
+    ubxor : (int, int) => int
+    ubxor(0, b) = b
+    ubxor(a, 0) = a
+    ubxor(a, b) =
+      require(a >= 0 && b >= 0, "ubxor is only defined for non-negative integers")
+      ubxor__(a, b, 1, 0)
+
+  private function ubxor_(a, b) = ubxor__(a, b, 1, 0)
+
+  private function
+    ubxor__(0, 0, val, acc) = acc
+    ubxor__(a, b, val, acc) =
+      switch(a mod 2 + b mod 2)
+        1 => ubxor__(a / 2, b / 2, val * 2, acc + val)
+        _ => ubxor__(a / 2, b / 2, val * 2, acc)
+
+  private function ubnand_(a, b) = ubnand__(a, b, 1, 0)
+
+  private function
+    ubnand__(0, b, val, acc) = acc
+    ubnand__(a, b, val, acc) =
+      switch((a mod 2, b mod 2))
+        (1, 0) => ubnand__(a / 2, b / 2, val * 2, acc + val)
+        _      => ubnand__(a / 2, b / 2, val * 2, acc)

priv/stdlib/Frac.aes

@@ -0,0 +1,185 @@
+include "String.aes"
+
+namespace Frac =
+
+  private function gcd(a : int, b : int) =
+    if (b == 0) a else gcd(b, a mod b)
+
+  private function abs_int(a : int) = if (a < 0) -a else a
+
+  datatype frac = Pos(int, int) | Zero | Neg(int, int)
+
+/** Checks if the internal representation is correct.
+  * Numerator and denominator must be positive.
+  * Exposed for debug purposes
+  */
+  function is_sane(f : frac) : bool = switch(f)
+    Pos(n, d) => n > 0 && d > 0
+    Zero => true
+    Neg(n, d) => n > 0 && d > 0
+
+  function num(f : frac) : int = switch(f)
+    Pos(n, _) => n
+    Neg(n, _) => -n
+    Zero      => 0
+
+  function den(f : frac) : int = switch(f)
+    Pos(_, d) => d
+    Neg(_, d) => d
+    Zero      => 1
+
+  function to_pair(f : frac) : int * int = switch(f)
+    Pos(n, d) => (n, d)
+    Neg(n, d) => (-n, d)
+    Zero      => (0, 1)
+
+  function sign(f : frac) : int = switch(f)
+    Pos(_, _) => 1
+    Neg(_, _) => -1
+    Zero      => 0
+
+  function to_str(f : frac) : string = switch(f)
+    Pos(n, d) => String.concat(Int.to_str(n), if (d == 1) "" else String.concat("/", Int.to_str(d)))
+    Neg(n, d) => String.concat("-", to_str(Pos(n, d)))
+    Zero      => "0"
+
+/** Reduce fraction to normal form
+ */
+  function simplify(f : frac) : frac =
+    switch(f)
+      Neg(n, d) =>
+        let cd = gcd(n, d)
+        Neg(n / cd, d / cd)
+      Zero  => Zero
+      Pos(n, d)  =>
+        let cd = gcd(n, d)
+        Pos(n / cd, d / cd)
+
+/** Integer to rational division
+ */
+  function make_frac(n : int, d : int) : frac =
+    if (d == 0) abort("Zero denominator")
+    elif (n == 0) Zero
+    elif ((n < 0) == (d < 0)) simplify(Pos(abs_int(n), abs_int(d)))
+    else simplify(Neg(abs_int(n), abs_int(d)))
+
+  function one() : frac = Pos(1, 1)
+  function zero() : frac = Zero
+
+  function eq(a : frac, b : frac) : bool =
+    let (na, da) = to_pair(a)
+    let (nb, db) = to_pair(b)
+    (na == nb && da == db) || na * db == nb * da // they are more likely to be normalized
+
+  function neq(a : frac, b : frac) : bool =
+    let (na, da) = to_pair(a)
+    let (nb, db) = to_pair(b)
+    (na != nb || da != db) && na * db != nb * da
+
+  function geq(a : frac, b : frac) : bool = num(a) * den(b) >= num(b) * den(a)
+
+  function leq(a : frac, b : frac) : bool = num(a) * den(b) =< num(b) * den(a)
+
+  function gt(a : frac, b : frac) : bool = num(a) * den(b) > num(b) * den(a)
+
+  function lt(a : frac, b : frac) : bool = num(a) * den(b) < num(b) * den(a)
+
+  function min(a : frac, b : frac) : frac = if (leq(a, b)) a else b 
+
+  function max(a : frac, b : frac) : frac = if (geq(a, b)) a else b 
+
+  function abs(f : frac) : frac = switch(f)
+    Pos(n, d) => Pos(n, d)
+    Zero      => Zero
+    Neg(n, d) => Pos(n, d)
+
+  function from_int(n : int) : frac =
+    if   (n > 0) Pos(n, 1)
+    elif (n < 0) Neg(-n, 1)
+    else Zero
+
+  function floor(f : frac) : int = switch(f)
+    Pos(n, d) => n / d
+    Zero      => 0
+    Neg(n, d) => -(n + d - 1) / d
+
+  function ceil(f : frac) : int = switch(f)
+    Pos(n, d) => (n + d - 1) / d
+    Zero      => 0
+    Neg(n, d) => -n / d
+  
+  function round_to_zero(f : frac) : int = switch(f)
+    Pos(n, d) => n / d
+    Zero      => 0
+    Neg(n, d) => -n / d
+
+  function round_from_zero(f : frac) : int = switch(f)
+    Pos(n, d) => (n + d - 1) / d
+    Zero      => 0
+    Neg(n, d) => -(n + d - 1) / d
+
+/** Round towards nearest integer. If two integers are in the same
+ * distance, choose the even one.
+ */
+  function round(f : frac) : int =
+    let fl = floor(f)
+    let cl = ceil(f)
+    let dif_fl = abs(sub(f, from_int(fl)))
+    let dif_cl = abs(sub(f, from_int(cl)))
+    if   (gt(dif_fl, dif_cl)) cl
+    elif (gt(dif_cl, dif_fl)) fl
+    elif (fl mod 2 == 0) fl
+    else cl
+
+  function add(a : frac, b : frac) : frac =
+    let (na, da) = to_pair(a)
+    let (nb, db) = to_pair(b)
+    if   (da == db) make_frac(na + nb, da)
+    else make_frac(na * db + nb * da, da * db)
+
+  function neg(a : frac) : frac = switch(a)
+    Neg(n, d) => Pos(n, d)
+    Zero      => Zero
+    Pos(n, d) => Neg(n, d)
+
+  function sub(a : frac, b : frac) : frac = add(a, neg(b))
+
+  function inv(a : frac) : frac = switch(a)
+    Neg(n, d) => Neg(d, n)
+    Zero      => abort("Inversion of zero")
+    Pos(n, d) => Pos(d, n)
+
+  function mul(a : frac, b : frac) : frac = make_frac(num(a) * num(b), den(a) * den(b))
+
+  function div(a : frac, b : frac) : frac = switch(b)
+    Neg(n, d) => mul(a, Neg(d, n))
+    Zero      => abort("Division by zero")
+    Pos(n, d) => mul(a, Pos(d, n))
+
+/** `b` to the power of `e`
+ */
+  function int_exp(b : frac, e : int) : frac =
+    if (sign(b) == 0 && e == 0) abort("Zero to the zero exponentation")
+    elif (e < 0) inv(int_exp_(b, -e))
+    else int_exp_(b, e)
+  private function int_exp_(b : frac, e : int) =
+      if (e == 0) from_int(1)
+      elif (e == 1) b
+      else
+        let half = int_exp_(b, e / 2)
+        if (e mod 2 == 1) mul(mul(half, half), b)
+        else mul(half, half)
+
+/** Reduces the fraction's in-memory size by dividing its components by two until the
+ * the error is bigger than `loss` value
+ */
+  function optimize(f : frac, loss : frac) : frac =
+    require(geq(loss, Zero), "negative loss optimize")
+    let s = sign(f)
+    mul(from_int(s), run_optimize(abs(f), abs(f), loss))
+  private function run_optimize(orig : frac, f : frac, loss : frac) : frac =
+    let (n, d) = to_pair(f)
+    let t = make_frac((n+1)/2, (d+1)/2)
+    if(gt(abs(sub(t, orig)), loss)) f
+    elif (eq(t, f)) f
+    else run_optimize(orig, t, loss)

priv/stdlib/Func.aes

@@ -0,0 +1,77 @@
+namespace Func =
+
+  function id(x : 'a) : 'a = x
+
+  function const(x : 'a) : 'b => 'a = (_) => x
+
+  function flip(f : ('a, 'b) => 'c) : ('b, 'a) => 'c = (b, a) => f(a, b)
+
+  function comp(f : 'b => 'c, g : 'a => 'b) : 'a => 'c = (x) => f(g(x))
+
+  function pipe(f : 'a => 'b, g : 'b => 'c) : 'a => 'c = (x) => g(f(x))
+
+  function rapply(x : 'a, f : 'a => 'b) : 'b = f(x)
+
+/** The Z combinator - replacement for local and anonymous recursion.
+  */
+  function recur(f : ('arg => 'res, 'arg) => 'res) : 'arg => 'res =
+    (x) => f(recur(f), x)
+
+/** n-times composition with itself
+ */
+  function iter(n : int, f : 'a => 'a) : 'a => 'a = iter_(n, f, (x) => x)
+  private function iter_(n : int, f : 'a => 'a, acc : 'a => 'a) : 'a => 'a =
+    if(n == 0) acc
+    elif(n == 1) comp(f, acc)
+    else iter_(n / 2, comp(f, f), if(n mod 2 == 0) acc else comp(f, acc))
+
+/** Turns an ugly, bad and disgusting arity-n function into
+ * a beautiful and sweet function taking the first argument
+ * and returning a function watiting for the remaining ones
+ * in the same manner
+ */
+  function curry2(f : ('a, 'b) => 'x) : 'a => ('b => 'x) =
+    (x) => (y) => f(x, y)
+  function curry3(f : ('a, 'b, 'c) => 'x) : 'a => ('b => ('c => 'x)) =
+    (x) => (y) => (z) => f(x, y, z)
+  function curry4(f : ('a, 'b, 'c, 'd) => 'x) : 'a => ('b => ('c => ('d => 'x))) =
+    (x) => (y) => (z) => (w) => f(x, y, z, w)
+  function curry5(f : ('a, 'b, 'c, 'd, 'e) => 'x) : 'a => ('b => ('c => ('d => ('e => 'x)))) =
+    (x) => (y) => (z) => (w) => (q) => f(x, y, z, w, q)
+
+/** Opposite of curry. Gross
+ */
+  function uncurry2(f : 'a => ('b => 'x)) : ('a, 'b) => 'x =
+    (x, y) => f(x)(y)
+  function uncurry3(f : 'a => ('b => ('c => 'x))) : ('a, 'b, 'c) => 'x =
+    (x, y, z) => f(x)(y)(z)
+  function uncurry4(f : 'a => ('b => ('c => ('d => 'x)))) : ('a, 'b, 'c, 'd) => 'x =
+    (x, y, z, w) => f(x)(y)(z)(w)
+  function uncurry5(f : 'a => ('b => ('c => ('d => ('e => 'x))))) : ('a, 'b, 'c, 'd, 'e) => 'x =
+    (x, y, z, w, q) => f(x)(y)(z)(w)(q)
+
+/** Turns an arity-n function into a function taking n-tuple
+ */
+  function tuplify2(f : ('a, 'b) => 'x) : (('a * 'b)) => 'x =
+    (t) => switch(t)
+      (x, y) => f(x, y)
+  function tuplify3(f : ('a, 'b, 'c) => 'x) : 'a * 'b * 'c => 'x =
+    (t) => switch(t)
+      (x, y, z) => f(x, y, z)
+  function tuplify4(f : ('a, 'b, 'c, 'd) => 'x) : 'a * 'b * 'c * 'd => 'x =
+    (t) => switch(t)
+      (x, y, z, w) => f(x, y, z, w)
+  function tuplify5(f : ('a, 'b, 'c, 'd, 'e) => 'x) : 'a * 'b * 'c * 'd * 'e => 'x =
+    (t) => switch(t)
+      (x, y, z, w, q) => f(x, y, z, w, q)
+
+/** Opposite of tuplify
+ */
+  function untuplify2(f : 'a * 'b => 'x) : ('a, 'b) => 'x =
+    (x, y) => f((x, y))
+  function untuplify3(f : 'a * 'b * 'c => 'x) : ('a, 'b, 'c) => 'x =
+    (x, y, z) => f((x, y, z))
+  function untuplify4(f : 'a * 'b * 'c * 'd => 'x) : ('a, 'b, 'c, 'd) => 'x =
+    (x, y, z, w) => f((x, y, z, w))
+  function untuplify5(f : 'a * 'b * 'c * 'd * 'e => 'x) : ('a, 'b, 'c, 'd, 'e) => 'x =
+    (x, y, z, w, q) => f((x, y, z, w, q))

priv/stdlib/List.aes

@@ -0,0 +1,316 @@
+include "ListInternal.aes"
+
+namespace List =
+
+  function is_empty(l : list('a)) : bool = switch(l)
+    [] => true
+    _  => false
+
+  function first(l : list('a)) : option('a) = switch(l)
+    []   => None
+    h::_ => Some(h)
+
+  function tail(l : list('a)) : option(list('a)) = switch(l)
+    []   => None
+    _::t => Some(t)
+
+  function last(l : list('a)) : option('a) = switch(l)
+    []   => None
+    [x]  => Some(x)
+    _::t => last(t)
+
+  function drop_last(l : list('a)) : option(list('a)) = switch(l)
+    [] => None
+    _  => Some(drop_last_unsafe(l))
+
+  function drop_last_unsafe(l : list('a)) : list('a) = switch(l)
+    [_]  => []
+    h::t => h::drop_last_unsafe(t)
+    []   => abort("drop_last_unsafe: list empty")
+
+
+  function contains(e : 'a, l : list('a)) = switch(l)
+    []   => false
+    h::t => h == e || contains(e, t)
+
+/** Finds first element of `l` fulfilling predicate `p` as `Some` or `None`
+ * if no such element exists.
+ */
+  function find(p : 'a => bool, l : list('a)) : option('a) = switch(l)
+    []   => None
+    h::t => if(p(h)) Some(h) else find(p, t)
+
+/** Returns list of all indices of elements from `l` that fulfill the predicate `p`.
+ */
+  function find_indices(p : 'a => bool, l : list('a)) : list(int) = find_indices_(p, l, 0)
+  private function find_indices_( p : 'a => bool
+                                , l : list('a)
+                                , n : int
+                                ) : list(int) = switch(l)
+    []   => []
+    h::t =>
+     let rest = find_indices_(p, t, n+1)
+     if(p(h)) n::rest else rest
+
+  function nth(n : int, l : list('a)) : option('a) =
+    switch(l)
+      []   => None
+      h::t => if(n == 0) Some(h) else nth(n-1, t)
+
+  /* Unsafe version of `nth` */
+  function get(n : int, l : list('a)) : 'a =
+    switch(l)
+      [] => abort(if(n < 0) "Negative index get" else "Out of index get")
+      h::t => if(n == 0) h else get(n-1, t)
+
+
+  function length(l : list('a)) : int = length_(l, 0)
+  private function length_(l : list('a), acc : int) : int = switch(l)
+    []   => acc
+    _::t => length_(t, acc + 1)
+
+
+/** Creates an ascending sequence of all integer numbers
+ * between `a` and `b` (including `a` and `b`)
+ */
+  function from_to(a : int, b : int) : list(int) = [a..b]
+
+/** Creates an ascending sequence of integer numbers betweeen
+ * `a` and `b` jumping by given `step`. Includes `a` and takes
+ * `b` only if `(b - a) mod step == 0`. `step` should be bigger than 0.
+ */
+  function from_to_step(a : int, b : int, s : int) : list(int) =
+    require(s > 0, "List.from_to_step: non-positive step")
+    from_to_step_(a, b - (b-a) mod s, s, [])
+  private function from_to_step_(a : int, b : int, s : int, acc : list(int)) : list(int) =
+    if(b < a) acc
+    else from_to_step_(a, b - s, s, b::acc)
+
+
+/** Unsafe. Replaces `n`th element of `l` with `e`. Crashes on over/underflow
+ */
+  function replace_at(n : int, e : 'a, l : list('a)) : list('a) =
+    if(n<0) abort("insert_at underflow") else replace_at_(n, e, l)
+  private function replace_at_(n : int, e : 'a, l : list('a)) : list('a) =
+   switch(l)
+     []   => abort("replace_at overflow")
+     h::t => if (n == 0) e::t
+             else h::replace_at_(n-1, e, t)
+
+/** Unsafe. Adds `e` to `l` to be its `n`th element. Crashes on over/underflow
+ */
+  function insert_at(n : int, e : 'a, l : list('a)) : list('a) =
+    if(n<0) abort("insert_at underflow") else insert_at_(n, e, l)
+  private function insert_at_(n : int, e : 'a, l : list('a)) : list('a) =
+   if (n == 0) e::l
+   else switch(l)
+     []   => abort("insert_at overflow")
+     h::t => h::insert_at_(n-1, e, t)
+
+/** Assuming that cmp represents `<` comparison, inserts `x` before
+ * the first element in the list `l` which is greater than it
+ */
+  function insert_by(cmp : (('a, 'a) => bool), x : 'a, l : list('a)) : list('a) =
+    switch(l)
+      []   => [x]
+      h::t =>
+        if(cmp(x, h)) // x < h
+          x::l
+        else
+          h::insert_by(cmp, x, t)
+
+
+  function foldr(cons : ('a, 'b) => 'b, nil : 'b, l : list('a)) : 'b = switch(l)
+    []   => nil
+    h::t => cons(h, foldr(cons, nil, t))
+
+  function foldl(rcons : ('b, 'a) => 'b, acc : 'b, l : list('a)) : 'b = switch(l)
+    []   => acc
+    h::t => foldl(rcons, rcons(acc, h), t)
+
+  function foreach(l : list('a), f : 'a => unit) : unit =
+    switch(l)
+     []    => ()
+     e::l' =>
+       f(e)
+       foreach(l', f)
+
+  function reverse(l : list('a)) : list('a) = reverse_(l, [])
+  private function reverse_(l : list('a), acc : list('a)) : list('a) = switch(l)
+    [] => acc
+    h::t => reverse_(t, h::acc)
+
+  function map(f : 'a => 'b, l : list('a)) : list('b) = switch(l)
+    [] => []
+    h::t => f(h)::map(f, t)
+
+/** Effectively composition of `map` and `flatten`
+ */
+  function flat_map(f : 'a => list('b), l : list('a)) : list('b) =
+    ListInternal.flat_map(f, l)
+
+  function filter(p : 'a => bool, l : list('a)) : list('a) = switch(l)
+    []   => []
+    h::t =>
+      let rest = filter(p, t)
+      if(p(h)) h::rest else rest
+
+/** Take up to `n` first elements
+ */
+  function take(n : int, l : list('a)) : list('a) =
+    if(n < 0) abort("Take negative number of elements") else take_(n, l)
+  private function take_(n : int, l : list('a)) : list('a) =
+    if(n == 0) []
+    else switch(l)
+      []   => []
+      h::t => h::take_(n-1, t)
+
+/** Drop up to `n` first elements
+ */
+  function drop(n : int, l : list('a)) : list('a) =
+   if(n < 0) abort("Drop negative number of elements") else drop_(n, l)
+  private function drop_(n : int, l : list('a)) : list('a) =
+   if (n == 0) l
+   else switch(l)
+      []   => []
+      _::t => drop_(n-1, t)
+
+/** Get the longest prefix of a list in which every element
+ * matches predicate `p`
+ */
+  function take_while(p : 'a => bool, l : list('a)) : list('a) = switch(l)
+    []   => []
+    h::t => if(p(h)) h::take_while(p, t) else []
+
+/** Drop elements from `l` until `p` holds
+ */
+  function drop_while(p : 'a => bool, l : list('a)) : list('a) = switch(l)
+    []   => []
+    h::t => if(p(h)) drop_while(p, t) else l
+
+/** Splits list into two lists of elements that respectively
+ * match and don't match predicate `p`
+ */
+  function partition(p : 'a => bool, lst : list('a)) : (list('a) * list('a)) = switch(lst)
+    []   => ([], [])
+    h::t =>
+      let (l, r) = partition(p, t)
+      if(p(h)) (h::l, r) else (l, h::r)
+
+  function flatten(l : list(list('a))) : list('a) = switch(l)
+    []   => []
+    h::t => h ++ flatten(t)
+
+  function all(p : 'a => bool, l : list('a)) : bool = switch(l)
+    []   => true
+    h::t => if(p(h)) all(p, t) else false
+
+  function any(p : 'a => bool, l : list('a)) : bool = switch(l)
+    []   => false
+    h::t => if(p(h)) true else any(p, t)
+
+  function sum(l : list(int)) : int = switch(l)
+    []   => 0
+    h::t => h + sum(t)
+
+  function product(l : list(int)) : int = switch(l)
+    []   => 1
+    h::t => h * sum(t)
+
+/** Zips two list by applying bimapping function on respective elements.
+ * Drops the tail of the longer list.
+ */
+  private function zip_with( f : ('a, 'b) => 'c
+                            , l1 : list('a)
+                            , l2 : list('b)
+                            ) : list('c) = switch ((l1, l2))
+    (h1::t1, h2::t2) => f(h1, h2)::zip_with(f, t1, t2)
+    _ => []
+
+/** Zips two lists into list of pairs.
+ * Drops the tail of the longer list.
+ */
+  function zip(l1 : list('a), l2 : list('b)) : list('a * 'b) = zip_with((a, b) => (a, b), l1, l2)
+
+  function unzip(l : list('a * 'b)) : (list('a) * list('b)) = switch(l)
+    []          => ([], [])
+    (h1, h2)::t =>
+      let (t1, t2) = unzip(t)
+      (h1::t1, h2::t2)
+
+
+  /** Merges two sorted lists using `lt` comparator
+   */
+  function
+    merge : (('a, 'a) => bool, list('a), list('a)) => list('a)
+    merge(lt, x::xs, y::ys) =
+      if(lt(x, y)) x::merge(lt, xs, y::ys)
+      else y::merge(lt, x::xs, ys)
+    merge(_, [], ys) = ys
+    merge(_, xs, []) = xs
+
+
+  /** Mergesort inspired by
+   * https://hackage.haskell.org/package/base-4.14.1.0/docs/src/Data.OldList.html#sort
+   */
+  function
+    sort : (('a, 'a) => bool, list('a)) => list('a)
+    sort(_, []) = []
+    sort(lt, l) =
+      merge_all(lt, monotonic_subs(lt, l))
+
+  /** Splits list into compound increasing sublists
+   */
+  private function
+    monotonic_subs : (('a, 'a) => bool, list('a)) => list(list('a))
+    monotonic_subs(lt, x::y::rest) =
+      if(lt(y, x)) desc(lt, y, [x], rest)
+      else asc(lt, y, [x], rest)
+    monotonic_subs(_, l) = [l]
+
+  /** Extracts the longest descending prefix and proceeds with monotonic split
+   */
+  private function
+    desc : (('a, 'a) => bool, 'a, list('a), list('a)) => list(list('a))
+    desc(lt, x, acc, h::t) =
+      if(lt(x, h)) (x::acc) :: monotonic_subs(lt, h::t)
+      else desc(lt, h, x::acc, t)
+    desc(_, x, acc, []) = [x::acc]
+
+  /** Extracts the longest ascending prefix and proceeds with monotonic split
+   */
+  private function
+    asc : (('a, 'a) => bool, 'a, list('a), list('a)) => list(list('a))
+    asc(lt, x, acc, h::t) =
+      if(lt(h, x)) List.reverse(x::acc) :: monotonic_subs(lt, h::t)
+      else asc(lt, h, x::acc, t)
+    asc(_, x, acc, []) = [List.reverse(x::acc)]
+
+  /** Merges list of sorted lists
+   */
+  private function
+    merge_all : (('a, 'a) => bool, list(list('a))) => list('a)
+    merge_all(_, [part]) = part
+    merge_all(lt, parts) = merge_all(lt, merge_pairs(lt, parts))
+
+  /** Single round of `merge_all` – pairs of lists in a list of list
+   */
+  private function
+    merge_pairs : (('a, 'a) => bool, list(list('a))) => list(list('a))
+    merge_pairs(lt, x::y::rest) = merge(lt, x, y) :: merge_pairs(lt, rest)
+    merge_pairs(_, l) = l
+
+
+/** Puts `delim` between every two members of the list
+ */
+  function intersperse(delim : 'a, l : list('a)) : list('a) = switch(l)
+    []   => []
+    [e]  => [e]
+    h::t => h::delim::intersperse(delim, t)
+
+/** Effectively a zip with an infinite sequence of natural numbers
+ */
+  function enumerate(l : list('a)) : list(int * 'a) = enumerate_(l, 0)
+  private function enumerate_(l : list('a), n : int) : list(int * 'a) = switch(l)
+    []   => []
+    h::t => (n, h)::enumerate_(t, n + 1)

priv/stdlib/ListInternal.aes

@@ -0,0 +1,16 @@
+namespace ListInternal =
+
+  // -- Flatmap ----------------------------------------------------------------
+
+  function flat_map(f : 'a => list('b), lst : list('a)) : list('b) =
+    switch(lst)
+      []      => []
+      x :: xs => f(x) ++ flat_map(f, xs)
+
+  // -- From..to ---------------------------------------------------------------
+
+  function from_to(a : int, b : int) : list(int) = from_to_(a, b, [])
+
+  private function from_to_(a, b, acc) =
+    if (a > b) acc else from_to_(a, b - 1, b :: acc)
+

priv/stdlib/Option.aes

@@ -0,0 +1,102 @@
+namespace Option =
+
+  function is_none(o : option('a)) : bool = switch(o)
+    None => true
+    Some(_) => false
+
+  function is_some(o : option('a)) : bool = switch(o)
+    None => false
+    Some(_) => true
+
+/** Catamorphism on `option`. Also known as inlined pattern matching.
+ */
+  function match(n : 'b, s : 'a => 'b, o : option('a)) : 'b = switch(o)
+    None => n
+    Some(x) => s(x)
+
+/** Escape option providing default if `None`
+ */
+  function default(def : 'a, o : option('a)) : 'a = match(def, (x) => x, o)
+
+/** Assume it is `Some`
+ */
+  function force(o : option('a)) : 'a = switch(o)
+    None    => abort("Forced None value")
+    Some(x) => x
+
+/** Assume it is `Some` with custom error message
+ */
+  function force_msg(o : option('a), err : string) : 'a = switch(o)
+    None    => abort(err)
+    Some(x) => x
+
+  function contains(e : 'a, o : option('a)) = o == Some(e)
+
+  function on_elem(o : option('a), f : 'a => unit) : unit = match((), f, o)
+
+  function map(f : 'a => 'b, o : option('a)) : option('b) = switch(o)
+    None => None
+    Some(x) => Some(f(x))
+
+  function map2(f : ('a, 'b) => 'c
+               , o1 : option('a)
+               , o2 : option('b)
+               ) : option('c) = switch((o1, o2))
+    (Some(x1), Some(x2)) => Some(f(x1, x2))
+    _ => None
+
+  function map3( f : ('a, 'b, 'c) => 'd
+               , o1 : option('a)
+               , o2 : option('b)
+               , o3 : option('c)
+               ) : option('d) = switch((o1, o2, o3))
+    (Some(x1), Some(x2), Some(x3)) => Some(f(x1, x2, x3))
+    _ => None
+
+/** Like `map`, but the function is in `option`
+ */
+  function app_over(f : option ('a => 'b), o : option('a)) : option('b) = switch((f, o))
+    (Some(ff), Some(xx)) => Some(ff(xx))
+    _ => None
+
+/** Monadic bind
+ */
+  function flat_map(f : 'a => option('b), o : option('a)) : option('b) = switch(o)
+    None => None
+    Some(x) => f(x)
+
+
+  function to_list(o : option('a)) : list('a) = switch(o)
+    None => []
+    Some(x) => [x]
+
+/** Turns list of options into a list of elements that are under `Some`s.
+ * Safe.
+ */
+  function filter_options(l : list(option('a))) : list('a) = switch(l)
+    []         => []
+    None::t    => filter_options(t)
+    Some(x)::t => x::filter_options(t)
+
+/** Just like `filter_options` but requires all elements to be `Some` and returns
+ * None if any of them is not
+ */
+  function seq_options(l : list (option('a))) : option (list('a)) = switch(l)
+    []         => Some([])
+    None::_    => None
+    Some(x)::t => switch(seq_options(t))
+      None => None
+      Some(st) => Some(x::st)
+
+
+/** Choose `Some` out of two if possible
+ */
+  function choose(o1 : option('a), o2 : option('a)) : option('a) =
+    if(is_some(o1)) o1 else o2
+
+/** Choose `Some` from list of options if possible
+ */
+  function choose_first(l : list(option('a))) : option('a) = switch(l)
+    [] => None
+    None::t    => choose_first(t)
+    Some(x)::_ => Some(x)

priv/stdlib/Pair.aes

@@ -0,0 +1,26 @@
+namespace Pair =
+
+  function fst(t : ('a * 'b)) : 'a = switch(t)
+    (x, _) => x
+
+  function snd(t : ('a * 'b)) : 'b = switch(t)
+    (_, y) => y
+
+/** Map over first
+ */
+  function map1(f : 'a => 'c, t : ('a * 'b)) : ('c * 'b) = switch(t)
+    (x, y) => (f(x), y)
+
+/** Map over second
+ */
+  function map2(f : 'b => 'c, t : ('a * 'b)) : ('a * 'c) = switch(t)
+    (x, y) => (x, f(y))
+
+/** Map over both
+ */
+  function bimap(f : 'a => 'c, g : 'b => 'd, t : ('a * 'b)) : ('c * 'd) = switch(t)
+    (x, y) => (f(x), g(y))
+
+  function swap(t : ('a * 'b)) : ('b * 'a) = switch(t)
+    (x, y) => (y, x)
+

priv/stdlib/Set.aes

@@ -0,0 +1,51 @@
+include "List.aes"
+include "Option.aes"
+include "Pair.aes"
+
+namespace Set =
+  record set('a) = { to_map : map('a, unit) }
+
+  function new() : set('a) =
+    { to_map = {} }
+
+  function member(e : 'a, s : set('a)) : bool =
+    Map.member(e, s.to_map)
+
+  function insert(e : 'a, s : set('a)) : set('a) =
+    { to_map = s.to_map{[e] = ()} }
+
+  function delete(e : 'a, s : set('a)) : set('a) =
+    { to_map = Map.delete(e, s.to_map) }
+
+  function size(s : set('a)) : int =
+    Map.size(s.to_map)
+
+  function to_list(s : set('a)) : list('a) =
+    List.map(Pair.fst, Map.to_list(s.to_map))
+
+  function from_list(l : list('a)) : set('a) =
+    { to_map = Map.from_list(List.map((x) => (x, ()), l)) }
+
+  function filter(p : 'a => bool, s : set('a)) : set('a) =
+    from_list(List.filter(p, to_list(s)))
+
+  function fold(f : ('a, 'b) => 'b, acc : 'b, s : set('a)) : 'b =
+    List.foldr(f, acc, to_list(s))
+
+  function subtract(s1 : set('a), s2 : set('a)) : set('a) =
+    filter((x) => !member(x, s2), s1)
+
+  function intersection(s1 : set('a), s2 : set('a)) : set('a) =
+    filter((x) => member(x, s2), s1)
+
+  function intersection_list(sets : list(set('a))) : set('a) =
+    List.foldr(
+      intersection,
+      Option.default(new(), List.first(sets)),
+      Option.default([], List.tail(sets)))
+
+  function union(s1 : set('a), s2 : set('a)) : set('a) =
+    from_list(to_list(s1) ++ to_list(s2))
+
+  function union_list(sets : list(set('a))) : set('a) =
+    List.foldr(union, new(), sets)

priv/stdlib/String.aes

@@ -0,0 +1,117 @@
+include "List.aes"
+namespace String =
+  // Computes the SHA3/Keccak hash of the string
+  function sha3(s : string) : hash    = StringInternal.sha3(s)
+  // Computes the SHA256 hash of the string.
+  function sha256(s : string) : hash  = StringInternal.sha256(s)
+  // Computes the Blake2B hash of the string.
+  function blake2b(s : string) : hash = StringInternal.blake2b(s)
+
+  // The length of a string - equivalent to List.lenght(to_list(s))
+  function length(s : string) : int = StringInternal.length(s)
+  // Concatenates `s1` and `s2`.
+  function concat(s1 : string, s2 : string) : string = StringInternal.concat(s1, s2)
+  // Concatenates a list of strings.
+  function
+    concats : (list(string)) => string
+    concats([])      = ""
+    concats(s :: ss) = List.foldl(StringInternal.concat, s, ss)
+
+  // Converts a `string` to a list of `char` - the code points are normalized, but
+  // composite characters are possibly converted to multiple `char`s.
+  function from_list(cs : list(char)) : string = StringInternal.from_list(cs)
+  // Converts a list of characters into a normalized UTF-8 string.
+  function to_list(s : string) : list(char) = StringInternal.to_list(s)
+
+  // Converts a string to lowercase.
+  function to_lower(s : string) = StringInternal.to_lower(s)
+  // Converts a string to uppercase.
+  function to_upper(s : string) = StringInternal.to_upper(s)
+
+  // Splits a string at (zero-based) index `ix`.
+  function split(i : int, s : string) : string * string =
+    let cs = StringInternal.to_list(s)
+    (StringInternal.from_list(List.take(i, cs)), StringInternal.from_list(List.drop(i, cs)))
+
+  // Returns the character/codepoint at (zero-based) index `ix`.
+  function at(ix : int, s : string) =
+    switch(List.drop(ix, StringInternal.to_list(s)))
+      []     => None
+      x :: _ => Some(x)
+
+  // Searches for `pat` in `str`, returning `Some(ix)` if `pat` is a substring
+  // of `str` starting at position `ix`, otherwise returns `None`.
+  function contains(str : string, substr : string) : option(int) =
+    if(substr == "") Some(0)
+    else
+      contains_(0, StringInternal.to_list(str), StringInternal.to_list(substr))
+
+  // Splits `s` into tokens, `pat` is the divider of tokens.
+  function tokens(s : string, pat : string) =
+    require(pat != "", "String.tokens: empty pattern")
+    tokens_(StringInternal.to_list(pat), StringInternal.to_list(s), [])
+
+  // Converts a decimal ("123", "-253") or a hexadecimal ("0xa2f", "-0xBBB") string
+  // into an integer. If the string doesn't contain a valid number `None` is returned.
+  function to_int(str : string) : option(int) =
+    let lst = StringInternal.to_list(str)
+    switch(is_prefix(['-'], lst))
+      None    => to_int_pos(lst)
+      Some(s) => switch(to_int_pos(s))
+                   None => None
+                   Some(x) => Some(-x)
+
+  // Private helper functions below
+  private function to_int_pos(chs : list(char)) =
+    switch(is_prefix(['0', 'x'], chs))
+      None =>
+        to_int_(chs, ch_to_int_10, 0, 10)
+      Some(str) =>
+        to_int_(str, ch_to_int_16, 0, 16)
+
+  private function
+    tokens_(_, [], acc) = [StringInternal.from_list(List.reverse(acc))]
+    tokens_(pat, str, acc) =
+      switch(is_prefix(pat, str))
+        Some(str') =>
+          StringInternal.from_list(List.reverse(acc)) :: tokens_(pat, str', [])
+        None =>
+          let c :: cs = str
+          tokens_(pat, cs, c :: acc)
+
+  private function
+    contains_(_, [], _) = None
+    contains_(ix, str, substr) =
+      switch(is_prefix(substr, str))
+        None =>
+          let _ :: tailstr = str
+          contains_(ix + 1, tailstr, substr)
+        Some(_) =>
+          Some(ix)
+
+  private function
+    is_prefix([], ys) = Some(ys)
+    is_prefix(_, [])  = None
+    is_prefix(x :: xs, y :: ys) =
+      if(x == y) is_prefix(xs, ys)
+      else       None
+
+  private function
+    to_int_([], _, x, _) = Some(x)
+    to_int_(i :: is, value, x, b) =
+      switch(value(i))
+        None => None
+        Some(n) => to_int_(is, value, x * b + n, b)
+
+  private function ch_to_int_10(ch) =
+    let c = Char.to_int(ch)
+    if(c >= 48 && c =< 57) Some(c - 48)
+    else None
+
+  private function ch_to_int_16(ch) =
+    let c = Char.to_int(ch)
+    if(c >= 48 && c =< 57)    Some(c - 48)
+    elif(c >= 65 && c =< 70)  Some(c - 55)
+    elif(c >= 97 && c =< 102) Some(c - 87)
+    else None
+

priv/stdlib/Triple.aes

@@ -0,0 +1,49 @@
+namespace Triple =
+
+  function fst(t : ('a * 'b * 'c)) : 'a = switch(t)
+    (x, _, _) => x
+
+  function snd(t : ('a * 'b * 'c)) : 'b = switch(t)
+    (_, y, _) => y
+
+  function thd(t : ('a * 'b * 'c)) : 'c = switch(t)
+    (_, _, z) => z
+
+
+/** Map over first
+ */
+  function map1(f : 'a => 'm, t : ('a * 'b * 'c)) : ('m * 'b * 'c) = switch(t)
+    (x, y, z) => (f(x), y, z)
+
+/** Map over second
+ */
+  function map2(f : 'b => 'm, t : ('a * 'b * 'c)) : ('a * 'm * 'c) = switch(t)
+    (x, y, z) => (x, f(y), z)
+
+/** Map over third
+ */
+  function map3(f : 'c => 'm, t : ('a * 'b * 'c)) : ('a * 'b * 'm) = switch(t)
+    (x, y, z) => (x, y, f(z))
+
+/** Map over all elements
+ */
+  function trimap( f : 'a => 'x
+                 , g : 'b => 'y
+                 , h : 'c => 'z
+                 , t : ('a * 'b * 'c)
+                 ) : ('x * 'y * 'z) = switch(t)
+    (x, y, z) => (f(x), g(y), h(z))
+
+  function swap(t : ('a * 'b * 'c)) : ('c * 'b * 'a) = switch(t)
+    (x, y, z) => (z, y, x)
+
+/** Right rotation
+ */
+  function rotr(t : ('a * 'b * 'c)) : ('c * 'a * 'b) = switch(t)
+    (x, y, z) => (z, x, y)
+
+/** Left rotation
+ */
+  function rotl(t : ('a * 'b * 'c)) : ('b * 'c * 'a) = switch(t)
+    (x, y, z) => (y, z, x)
+

rebar.config

@@ -0,0 +1,24 @@
+%% -*- mode: erlang; indent-tabs-mode: nil -*-
+
+{erl_opts, [debug_info]}.
+
+{deps, [ {aebytecode, {git, "https://github.com/aeternity/aebytecode.git", {ref,"0699f35"}}}
+       , {getopt, "1.0.1"}
+       , {eblake2, "1.0.0"}
+       , {jsx, {git, "https://github.com/talentdeficit/jsx.git",
+                     {tag, "2.8.0"}}}
+       ]}.
+
+{dialyzer, [
+            {warnings, [unknown]},
+            {plt_apps, all_deps},
+            {base_plt_apps, [erts, kernel, stdlib, crypto, mnesia]}
+           ]}.
+
+{relx, [{release, {aesophia, "6.1.0"},
+         [aesophia, aebytecode, getopt]},
+
+        {dev_mode, true},
+        {include_erts, false},
+
+        {extended_start_script, true}]}.

rebar.lock

@@ -0,0 +1,28 @@
+{"1.1.0",
+[{<<"aebytecode">>,
+  {git,"https://github.com/aeternity/aebytecode.git",
+       {ref,"0699f35b0398bac6cd4468da654d608375bd853d"}},
+  0},
+ {<<"aeserialization">>,
+  {git,"https://github.com/aeternity/aeserialization.git",
+       {ref,"47aaa8f5434b365c50a35bfd1490340b19241991"}},
+  1},
+ {<<"base58">>,
+  {git,"https://github.com/aeternity/erl-base58.git",
+       {ref,"60a335668a60328a29f9731b67c4a0e9e3d50ab6"}},
+  2},
+ {<<"eblake2">>,{pkg,<<"eblake2">>,<<"1.0.0">>},0},
+ {<<"enacl">>,
+  {git,"https://github.com/aeternity/enacl.git",
+       {ref,"26180f42c0b3a450905d2efd8bc7fd5fd9cece75"}},
+  2},
+ {<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0},
+ {<<"jsx">>,
+  {git,"https://github.com/talentdeficit/jsx.git",
+       {ref,"3074d4865b3385a050badf7828ad31490d860df5"}},
+  0}]}.
+[
+{pkg_hash,[
+ {<<"eblake2">>, <<"EC8AD20E438AAB3F2E8D5D118C366A0754219195F8A0F536587440F8F9BCF2EF">>},
+ {<<"getopt">>, <<"C73A9FA687B217F2FF79F68A3B637711BB1936E712B521D8CE466B29CBF7808A">>}]}
+].

src/aeso_aci.erl

@@ -0,0 +1,374 @@
+%%%-------------------------------------------------------------------
+%%% @author Robert Virding
+%%% @copyright (C) 2019, Aeternity Anstalt
+%%% @doc
+%%%     ACI interface
+%%% @end
+%%% Created : 12 Jan 2019
+%%%-------------------------------------------------------------------
+
+-module(aeso_aci).
+
+-export([ file/2
+        , file/3
+        , contract_interface/2
+        , contract_interface/3
+
+        , from_typed_ast/2
+
+        , render_aci_json/1
+
+        , json_encode_expr/1
+        , json_encode_type/1]).
+
+-include("aeso_utils.hrl").
+
+-type aci_type()  :: json | string.
+-type json()      :: jsx:json_term().
+-type json_text() :: binary().
+
+-export_type([aci_type/0]).
+
+%% External API
+-spec file(aci_type(), string()) -> {ok, json() | string()} | {error, term()}.
+file(Type, File) ->
+    file(Type, File, []).
+
+file(Type, File, Options0) ->
+    Options = aeso_compiler:add_include_path(File, Options0),
+    case file:read_file(File) of
+        {ok, BinCode} ->
+            do_contract_interface(Type, binary_to_list(BinCode), Options);
+        {error, _} = Err -> Err
+    end.
+
+-spec contract_interface(aci_type(), string()) ->
+    {ok, json() | string()} | {error, term()}.
+contract_interface(Type, ContractString) ->
+    contract_interface(Type, ContractString, []).
+
+-spec contract_interface(aci_type(), string(), [term()]) ->
+    {ok, json() | string()} | {error, term()}.
+contract_interface(Type, ContractString, CompilerOpts) ->
+    do_contract_interface(Type, ContractString, CompilerOpts).
+
+-spec render_aci_json(json() | json_text()) -> {ok, binary()}.
+render_aci_json(Json) ->
+    do_render_aci_json(Json).
+
+-spec json_encode_expr(aeso_syntax:expr()) -> json().
+json_encode_expr(Expr) ->
+    encode_expr(Expr).
+
+-spec json_encode_type(aeso_syntax:type()) -> json().
+json_encode_type(Type) ->
+    encode_type(Type).
+
+%% Internal functions
+do_contract_interface(Type, Contract, Options) when is_binary(Contract) ->
+    do_contract_interface(Type, binary_to_list(Contract), Options);
+do_contract_interface(Type, ContractString, Options) ->
+    try
+        Ast = aeso_compiler:parse(ContractString, Options),
+        {TypedAst, _, _} = aeso_ast_infer_types:infer(Ast, [dont_unfold | Options]),
+        from_typed_ast(Type, TypedAst)
+    catch
+        throw:{error, Errors} -> {error, Errors}
+    end.
+
+from_typed_ast(Type, TypedAst) ->
+    JArray = [ encode_contract(C) || C <- TypedAst ],
+    case Type of
+        json   -> {ok, JArray};
+        string -> do_render_aci_json(JArray)
+    end.
+
+encode_contract(Contract = {Head, _, {con, _, Name}, _, _}) when ?IS_CONTRACT_HEAD(Head) ->
+    C0 = #{name => encode_name(Name)},
+
+    Tdefs0 = [ encode_typedef(T) || T <- sort_decls(contract_types(Contract)) ],
+    FilterT = fun(N) -> fun(#{name := N1}) -> N == N1 end end,
+    {Es, Tdefs1} = lists:partition(FilterT(<<"event">>), Tdefs0),
+    {Ss, Tdefs}  = lists:partition(FilterT(<<"state">>), Tdefs1),
+
+    C1 = C0#{type_defs => Tdefs},
+
+    C2 = case Es of
+             []                 -> C1;
+             [#{typedef := ET}] -> C1#{event => ET}
+         end,
+
+    C3 = case Ss of
+             []                 -> C2;
+             [#{typedef := ST}] -> C2#{state => ST}
+         end,
+
+    Fdefs  = [ encode_function(F)
+               || F <- sort_decls(contract_funcs(Contract)),
+                  is_entrypoint(F) ],
+
+    #{contract => C3#{kind => Head, functions => Fdefs, payable => is_payable(Contract)}};
+encode_contract(Namespace = {namespace, _, {con, _, Name}, _}) ->
+    Tdefs = [ encode_typedef(T) || T <- sort_decls(contract_types(Namespace)) ],
+    #{namespace => #{name => encode_name(Name),
+                     type_defs => Tdefs}}.
+
+%%  Encode a function definition. Currently we are only interested in
+%%  the interface and type.
+encode_function(FDef = {letfun, _, {id, _, Name}, Args, Type, _}) ->
+    #{name      => encode_name(Name),
+      arguments => encode_args(Args),
+      returns   => encode_type(Type),
+      stateful  => is_stateful(FDef),
+      payable   => is_payable(FDef)};
+encode_function(FDecl = {fun_decl, _, {id, _, Name}, {fun_t, _, _, Args, Type}}) ->
+    #{name      => encode_name(Name),
+      arguments => encode_anon_args(Args),
+      returns   => encode_type(Type),
+      stateful  => is_stateful(FDecl),
+      payable   => is_payable(FDecl)}.
+
+encode_anon_args(Types) ->
+    Anons = [ list_to_binary("_" ++ integer_to_list(X)) || X <- lists:seq(1, length(Types))],
+    [ #{name => V, type => encode_type(T)}
+      || {V, T} <- lists:zip(Anons, Types) ].
+
+encode_args(Args) -> [ encode_arg(A) || A <- Args ].
+
+encode_arg({typed, _, Id, T}) ->
+    #{name => encode_type(Id),
+      type => encode_type(T)}.
+
+encode_typedef(Type) ->
+    Name = typedef_name(Type),
+    Vars = typedef_vars(Type),
+    Def  = typedef_def(Type),
+    #{name    => encode_name(Name),
+      vars    => encode_tvars(Vars),
+      typedef => encode_type(Def)}.
+
+encode_tvars(Vars) ->
+    [ #{name => encode_type(V)} || V <- Vars ].
+
+%% Encode type
+encode_type({tvar, _, N})         -> encode_name(N);
+encode_type({id, _, N})           -> encode_name(N);
+encode_type({con, _, N})          -> encode_name(N);
+encode_type({qid, _, Ns})         -> encode_name(lists:join(".", Ns));
+encode_type({qcon, _, Ns})        -> encode_name(lists:join(".", Ns));
+encode_type({tuple_t, _, As})     -> #{tuple => encode_types(As)};
+encode_type({bytes_t, _, Len})    -> #{bytes => Len};
+encode_type({record_t, Fs})       -> #{record => encode_type_fields(Fs)};
+encode_type({app_t, _, Id, Fs})   -> #{encode_type(Id) => encode_types(Fs)};
+encode_type({variant_t, Cs})      -> #{variant => encode_types(Cs)};
+encode_type({constr_t, _, C, As}) -> #{encode_type(C) => encode_types(As)};
+encode_type({alias_t, Type})      -> encode_type(Type);
+encode_type({fun_t, _, _, As, T}) -> #{function =>
+                                         #{arguments => encode_types(As),
+                                           returns => encode_type(T)}}.
+
+encode_types(Ts) -> [ encode_type(T) || T <- Ts ].
+
+encode_type_fields(Fs) -> [ encode_type_field(F) || F <- Fs ].
+
+encode_type_field({field_t, _, Id, T}) ->
+    #{name => encode_type(Id),
+      type => encode_type(T)}.
+
+encode_name(Name) when is_list(Name) ->
+    list_to_binary(Name);
+encode_name(Name) when is_binary(Name) ->
+    Name.
+
+%% Encode Expr
+encode_exprs(Es) -> [ encode_expr(E) || E <- Es ].
+
+encode_expr({id, _, N})     -> encode_name(N);
+encode_expr({con, _, N})    -> encode_name(N);
+encode_expr({qid, _, Ns})   -> encode_name(lists:join(".", Ns));
+encode_expr({qcon, _, Ns})  -> encode_name(lists:join(".", Ns));
+encode_expr({typed, _, E})  -> encode_expr(E);
+encode_expr({bool, _, B})   -> B;
+encode_expr({int, _, V})    -> V;
+encode_expr({string, _, S}) -> S;
+encode_expr({tuple, _, As}) -> encode_exprs(As);
+encode_expr({list, _, As})  -> encode_exprs(As);
+encode_expr({bytes, _, B})  ->
+    Digits = byte_size(B),
+    <<N:Digits/unit:8>> = B,
+    list_to_binary(lists:flatten(io_lib:format("#~*.16.0b", [Digits*2, N])));
+encode_expr({Lit, _, L}) when Lit == oracle_pubkey; Lit == oracle_query_id;
+                              Lit == contract_pubkey; Lit == account_pubkey ->
+    aeser_api_encoder:encode(Lit, L);
+encode_expr({app, _, {'-', _}, [{int, _, N}]}) ->
+  encode_expr({int, [], -N});
+encode_expr({app, _, F, As}) ->
+    Ef = encode_expr(F),
+    Eas = encode_exprs(As),
+    #{Ef => Eas};
+encode_expr({record, _, Flds}) -> maps:from_list(encode_fields(Flds));
+encode_expr({map, _, KVs})     -> [ [encode_expr(K), encode_expr(V)] || {K, V} <- KVs ];
+encode_expr({Op,_Ann}) ->
+    error({encode_expr_todo, Op}).
+
+encode_fields(Flds) -> [ encode_field(F) || F <- Flds ].
+
+encode_field({field, _, [{proj, _, {id, _, Fld}}], Val}) ->
+    {encode_name(Fld), encode_expr(Val)}.
+
+do_render_aci_json(Json) ->
+    Contracts =
+        case Json of
+            JArray when is_list(JArray)  -> JArray;
+            JObject when is_map(JObject) -> [JObject];
+            JText when is_binary(JText)  ->
+                case jsx:decode(Json, [{labels, atom}, return_maps]) of
+                    JArray when is_list(JArray)  -> JArray;
+                    JObject when is_map(JObject) -> [JObject];
+                    _                            -> error(bad_aci_json)
+                end
+        end,
+    DecodedContracts = [ decode_contract(C) || C <- Contracts ],
+    {ok, list_to_binary(string:join(DecodedContracts, "\n"))}.
+
+decode_contract(#{contract := #{name := Name,
+                                kind := Kind,
+                                payable := Payable,
+                                type_defs := Ts0,
+                                functions := Fs} = C}) ->
+    MkTDef = fun(N, T) -> #{name => N, vars => [], typedef => T} end,
+    Ts = [ MkTDef(<<"state">>, maps:get(state, C)) || maps:is_key(state, C) ] ++
+         [ MkTDef(<<"event">>, maps:get(event, C)) || maps:is_key(event, C) ] ++ Ts0,
+    [payable(Payable), case Kind of
+                           contract_main -> "main contract ";
+                           contract_child -> "contract ";
+                           contract_interface -> "contract interface "
+                       end,
+     io_lib:format("~s", [Name])," =\n",
+     decode_tdefs(Ts), decode_funcs(Fs)];
+decode_contract(#{namespace := #{name := Name, type_defs := Ts}}) when Ts /= [] ->
+    ["namespace ", io_lib:format("~s", [Name])," =\n",
+     decode_tdefs(Ts)];
+decode_contract(_) -> [].
+
+decode_funcs(Fs) -> [ decode_func(F) || F <- Fs ].
+
+%% decode_func(#{name := init}) -> [];
+decode_func(#{name := Name, stateful:= Stateful, payable := Payable, arguments := As, returns := T}) ->
+    ["  ", payable(Payable), stateful(Stateful), "entrypoint ", io_lib:format("~s", [Name]), " : ",
+     decode_args(As), " => ", decode_type(T), $\n].
+
+decode_args(As) ->
+    Das = [ decode_arg(A) || A <- As ],
+    [$(,lists:join(", ", Das),$)].
+
+decode_arg(#{type := T}) -> decode_type(T).
+
+decode_types(Ets) ->
+    [ decode_type(Et) || Et <- Ets ].
+
+decode_type(#{tuple := Ets}) ->
+    Ts = decode_types(Ets),
+    case Ts of
+        [] -> ["unit"];
+        _ -> [$(,lists:join(" * ", Ts),$)]
+    end;
+decode_type(#{record := Efs}) ->
+    Fs = decode_fields(Efs),
+    [${,lists:join(",", Fs),$}];
+decode_type(#{list := [Et]}) ->
+    T = decode_type(Et),
+    ["list",$(,T,$)];
+decode_type(#{map := Ets}) ->
+    Ts = decode_types(Ets),
+    ["map",$(,lists:join(",", Ts),$)];
+decode_type(#{bytes := Len}) ->
+    ["bytes(", integer_to_list(Len), ")"];
+decode_type(#{variant := Ets}) ->
+    Ts = decode_types(Ets),
+    lists:join(" | ", Ts);
+decode_type(#{function := #{arguments := Args, returns := R}}) ->
+    [decode_type(#{tuple => Args}), " => ", decode_type(R)];
+decode_type(Econs) when is_map(Econs) ->	%General constructor
+    [{Ec,Ets}] = maps:to_list(Econs),
+    AppName = decode_name(Ec),
+    AppArgs = decode_types(Ets),
+    case AppArgs of
+        [] -> [AppName];
+        _  -> [AppName,$(,lists:join(", ", AppArgs),$)]
+    end;
+decode_type(T) ->				%Just raw names.
+    decode_name(T).
+
+decode_name(En) when is_atom(En)   -> erlang:atom_to_list(En);
+decode_name(En) when is_binary(En) -> binary_to_list(En).
+
+decode_fields(Efs) ->
+    [ decode_field(Ef) || Ef <- Efs ].
+
+decode_field(#{name := En, type := Et}) ->
+    Name = decode_name(En),
+    Type = decode_type(Et),
+    [Name," : ",Type].
+
+%% decode_tdefs(Json) -> [TypeString].
+%%  Here we are only interested in the type definitions and ignore the
+%%  aliases. We find them as they always have variants.
+
+decode_tdefs(Ts) -> [ decode_tdef(T) || T <- Ts ].
+
+decode_tdef(#{name := Name, vars := Vs, typedef := T}) ->
+    TypeDef = decode_type(T),
+    DefType = decode_deftype(T),
+    ["  ", DefType, " ", decode_name(Name), decode_tvars(Vs), " = ", TypeDef, $\n].
+
+decode_deftype(#{record := _Efs}) -> "record";
+decode_deftype(#{variant := _})   -> "datatype";
+decode_deftype(_T)                      -> "type".
+
+decode_tvars([]) -> [];  %No tvars, no parentheses
+decode_tvars(Vs) ->
+    Dvs = [ decode_tvar(V) || V <- Vs ],
+    [$(,lists:join(", ", Dvs),$)].
+
+decode_tvar(#{name := N}) -> io_lib:format("~s", [N]).
+
+payable(true)  -> "payable ";
+payable(false) -> "".
+
+stateful(true)  -> "stateful ";
+stateful(false) -> "".
+
+%% #contract{Ann, Con, [Declarations]}.
+
+contract_funcs({C, _, _, _, Decls}) when ?IS_CONTRACT_HEAD(C) ->
+    [ D || D <- Decls, is_fun(D)].
+
+contract_types({namespace, _, _, Decls}) ->
+    [ D || D <- Decls, is_type(D) ];
+contract_types({C, _, _, _, Decls}) when ?IS_CONTRACT_HEAD(C) ->
+    [ D || D <- Decls, is_type(D) ].
+
+is_fun({letfun, _, _, _, _, _}) -> true;
+is_fun({fun_decl, _, _, _})     -> true;
+is_fun(_)                       -> false.
+
+is_type({type_def, _, _, _, _}) -> true;
+is_type(_)                      -> false.
+
+sort_decls(Ds) ->
+    Sort = fun (D1, D2) ->
+                   aeso_syntax:get_ann(line, D1, 0) =<
+                       aeso_syntax:get_ann(line, D2, 0)
+           end,
+    lists:sort(Sort, Ds).
+
+is_entrypoint(Node) -> aeso_syntax:get_ann(entrypoint, Node, false).
+is_stateful(Node) -> aeso_syntax:get_ann(stateful, Node, false).
+is_payable(Node) -> aeso_syntax:get_ann(payable, Node, false).
+
+typedef_name({type_def, _, {id, _, Name}, _, _}) -> Name.
+
+typedef_vars({type_def, _, _, Vars, _}) -> Vars.
+
+typedef_def({type_def, _, _, _, Def}) -> Def.

src/aeso_ast.erl

@@ -0,0 +1,27 @@
+-module(aeso_ast).
+
+-export([int/2,
+         line/1,
+         pp/1,
+         pp_typed/1,
+         symbol/2,
+         symbol_name/1
+        ]).
+
+
+symbol(Line, Chars) -> {symbol, Line, Chars}.
+int(Line, Int) -> {'Int', Line, Int}.
+
+line({symbol, Line, _}) -> Line.
+
+symbol_name({symbol, _, Name}) -> Name.
+
+pp(Ast) ->
+    String = prettypr:format(aeso_pretty:decls(Ast, [])),
+    io:format("Ast:\n~s\n", [String]).
+
+pp_typed(TypedAst) ->
+    %% io:format("Typed tree:\n~p\n",[TypedAst]),
+    String = prettypr:format(aeso_pretty:decls(TypedAst, [show_generated])),
+    io:format("Type ast:\n~s\n",[String]).
+

src/aeso_code_errors.erl

@@ -0,0 +1,94 @@
+%%%-------------------------------------------------------------------
+%%% @author Ulf Norell
+%%% @copyright (C) 2019, Aeternity Anstalt
+%%% @doc
+%%%     Formatting of code generation errors.
+%%% @end
+%%%
+%%%-------------------------------------------------------------------
+-module(aeso_code_errors).
+
+-export([format/1, pos/1]).
+
+format({last_declaration_must_be_main_contract, Decl = {Kind, _, {con, _, C}, _}}) ->
+    Msg = io_lib:format("Expected a main contract as the last declaration instead of the ~p '~s'",
+                        [Kind, C]),
+    mk_err(pos(Decl), Msg);
+format({missing_init_function, Con}) ->
+    Msg = io_lib:format("Missing init function for the contract '~s'.", [pp_expr(Con)]),
+    Cxt = "The 'init' function can only be omitted if the state type is 'unit'.",
+    mk_err(pos(Con), Msg, Cxt);
+format({missing_definition, Id}) ->
+    Msg = io_lib:format("Missing definition of function '~s'.", [pp_expr(Id)]),
+    mk_err(pos(Id), Msg);
+format({parameterized_state, Decl}) ->
+    Msg = "The state type cannot be parameterized.",
+    mk_err(pos(Decl), Msg);
+format({parameterized_event, Decl}) ->
+    Msg = "The event type cannot be parameterized.",
+    mk_err(pos(Decl), Msg);
+format({invalid_entrypoint, Why, Ann, {id, _, Name}, Thing}) ->
+    What = case Why of higher_order -> "higher-order (contains function types)";
+                       polymorphic  -> "polymorphic (contains type variables)" end,
+    ThingS = case Thing of
+                 {argument, X, T} -> io_lib:format("argument\n~s\n", [pp_typed(X, T)]);
+                 {result, T}      -> io_lib:format("return type\n~s\n", [pp_type(2, T)])
+             end,
+    Bad = case Thing of
+              {argument, _, _} -> io_lib:format("has a ~s type", [What]);
+              {result, _}      -> io_lib:format("is ~s", [What])
+          end,
+    Msg = io_lib:format("The ~sof entrypoint '~s' ~s.",
+                        [ThingS, Name, Bad]),
+    case Why of
+        higher_order -> mk_err(pos(Ann), Msg)
+    end;
+format({invalid_aens_resolve_type, Ann, T}) ->
+    Msg = io_lib:format("Invalid return type of AENS.resolve:\n"
+                        "~s\n"
+                        "It must be a string or a pubkey type (address, oracle, etc).",
+                        [pp_type(2, T)]),
+    mk_err(pos(Ann), Msg);
+format({invalid_oracle_type, Why, What, Ann, Type}) ->
+    WhyS = case Why of higher_order -> "higher-order (contain function types)";
+                       polymorphic  -> "polymorphic (contain type variables)" end,
+    Msg = io_lib:format("Invalid oracle type\n~s", [pp_type(2, Type)]),
+    Cxt = io_lib:format("The ~s type must not be ~s.", [What, WhyS]),
+    mk_err(pos(Ann), Msg, Cxt);
+format({var_args_not_set, Expr}) ->
+    mk_err( pos(Expr), "Could not deduce type of variable arguments list"
+          , "When compiling " ++ pp_expr(Expr)
+          );
+format({found_void, Ann}) ->
+    mk_err(pos(Ann), "Found a void-typed value.", "`void` is a restricted, uninhabited type. Did you mean `unit`?");
+
+format(Err) ->
+    mk_err(aeso_errors:pos(0, 0), io_lib:format("Unknown error: ~p\n", [Err])).
+
+pos(Ann) ->
+    File = aeso_syntax:get_ann(file, Ann, no_file),
+    Line = aeso_syntax:get_ann(line, Ann, 0),
+    Col  = aeso_syntax:get_ann(col, Ann, 0),
+    aeso_errors:pos(File, Line, Col).
+
+pp_typed(E, T) ->
+    prettypr:format(prettypr:nest(2,
+    lists:foldr(fun prettypr:beside/2, prettypr:empty(),
+                [aeso_pretty:expr(E), prettypr:text(" : "),
+                 aeso_pretty:type(T)]))).
+
+pp_expr(E) ->
+    pp_expr(0, E).
+
+pp_expr(N, E) ->
+    prettypr:format(prettypr:nest(N, aeso_pretty:expr(E))).
+
+pp_type(N, T) ->
+    prettypr:format(prettypr:nest(N, aeso_pretty:type(T))).
+
+mk_err(Pos, Msg) ->
+    aeso_errors:new(code_error, Pos, lists:flatten(Msg)).
+
+mk_err(Pos, Msg, Cxt) ->
+    aeso_errors:new(code_error, Pos, lists:flatten(Msg), lists:flatten(Cxt)).
+