sophia/README.md
Robert Virding 70ad303e16 Document the aeso_compiler module
The module doc format is loosely based on the standard erlang doc
formats.
2019-01-25 16:16:20 +01:00

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# aesophia
This is the __sophia__ compiler for the æternity system which compiles contracts written in __sophia__ code to the æternity VM code.
For more information about æternity smart contracts and the sophia language see [Smart Contracts](https://github.com/aeternity/protocol/blob/master/contracts/contracts.md) and the [Sophia Language](https://github.com/aeternity/protocol/blob/master/contracts/sophia.md).
It is an OTP application written in Erlang and is by default included in
[the æternity node](https://github.com/aeternity/epoch). However, it can
also be included in other system to compile contracts coded in sophia which
can then be loaded into the æternity system.
## Modules
### 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 => string(),
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_icode` - print the internal code structure
`pp_assembler` - print the generated assembler code
`pp_bytecode` - print the bytecode instructions
#### 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.
#### sophia_type_to_typerep(String) -> TypeRep
Types
``` erlang
{ok,TypeRep} | {error, badtype}
```
Get the type representation of a type declaration.
#### version() -> Version
Types
``` erlang
Version = integer()
```
Get the current version of the Sophia compiler.