Contract factories and bytecode introspection (#305)

* Support for CREATE, CLONE and BYTECODE_HASH

* Add missing files

* Pushed the clone example through the typechecker

* CLONE compiles

* Fix dependent type in CLONE

* Bytecode hash fixes

* Refactor

* Refactor 2

* move some logic away

* Fixed some error messages. Type inference of child contract still does some random shit\n(mistakes arguments with result type)

* CREATE sometimes compiles and sometimes not

* Fix some scoping/constraint issues

* works, needs cleanup

* cleanup

* Fix some tests. Remove optimization of singleton tuples

* Fix default argument for clone

* Cleanup

* CHANGELOG

* Mention void type

* Address review, fix some dialyzer errors

* Please dialyzer

* Fix failing tests

* Write negative tests

* Docs

* TOC

* missing 'the'

* missing 'the'

* missing 'the'

* missing 'the'

* mention pre-fund

* format

* pre-fund clarification

* format

* Grammar in docs

test/contracts/code_errors/bad_aens_resolve.aes

@@ -5,5 +5,5 @@ contract BadAENSresolve =
   function fail() : t(int) =
     AENS.resolve("foo.aet", "whatever")
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()
 

test/contracts/code_errors/child_with_decls.aes

@@ -0,0 +1,5 @@
+contract C =
+  entrypoint f : () => unit
+
+main contract M =
+  entrypoint f() = 123

test/contracts/code_errors/higher_order_map_keys.aes

@@ -3,4 +3,4 @@ contract MapAsMapKey =
 
   function foo(m) : t(int => int) = {[m] = 0}
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()

test/contracts/code_errors/higher_order_query_type.aes

@@ -2,4 +2,4 @@ contract HigherOrderQueryType =
   stateful function foo(o) : oracle_query(_, string ) =
     Oracle.query(o, (x) => x + 1, 100, RelativeTTL(100), RelativeTTL(100))
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()

test/contracts/code_errors/higher_order_response_type.aes

@@ -2,4 +2,4 @@ contract HigherOrderResponseType =
   stateful function foo(o, q : oracle_query(string, _)) =
     Oracle.respond(o, q, (x) => x + 1)
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()

test/contracts/code_errors/last_declaration_must_be_contract.aes

@@ -1,2 +0,0 @@
-namespace LastDeclarationIsNotAContract =
-  function add(x, y) = x + y

test/contracts/code_errors/missing_definition.aes

@@ -1,3 +1,3 @@
 contract MissingDefinition =
   entrypoint foo : int => int
-  entrypoint main() = foo(0)
+  entrypoint main_fun() = foo(0)

test/contracts/code_errors/polymorphic_aens_resolve.aes

@@ -3,5 +3,5 @@ contract PolymorphicAENSresolve =
   function fail() : option('a) =
     AENS.resolve("foo.aet", "whatever")
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()
 

test/contracts/code_errors/polymorphic_map_keys.aes

@@ -3,4 +3,4 @@ contract MapAsMapKey =
 
   function foo(m) : t('a) = {[m] = 0}
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()

test/contracts/code_errors/polymorphic_query_type.aes

@@ -2,4 +2,4 @@ contract PolymorphicQueryType =
   stateful function is_oracle(o) =
     Oracle.check(o)
 
-  entrypoint main() = ()
+  entrypoint main_fun() = ()

test/contracts/code_errors/polymorphic_response_type.aes

@@ -2,4 +2,4 @@ contract PolymorphicResponseType =
   function is_oracle(o : oracle(string, 'r)) =
     Oracle.check(o)
 
-  entrypoint main(o : oracle(string, int)) = is_oracle(o)
+  entrypoint main_fun(o : oracle(string, int)) = is_oracle(o)

test/contracts/code_errors/unapplied_contract_call.aes

@@ -1,4 +1,4 @@
-contract Remote =
+contract interface Remote =
   entrypoint foo : int => int
 
 contract UnappliedContractCall =

test/contracts/code_errors/unapplied_named_arg_builtin.aes

@@ -1,5 +1,5 @@
 contract UnappliedNamedArgBuiltin =
   // Allowed in FATE, but not AEVM
-  stateful entrypoint main(s) =
+  stateful entrypoint main_fun(s) =
     let reg = Oracle.register
     reg(signature = s, Contract.address, 100, RelativeTTL(100)) : oracle(int, int)