[PT-167805291] Add opcode for ecrecover (#122)

* Add opcode for ecrecover

* Update aebytecode

* Extend signature bytes type used for ecrecover

* Add ecrecover to changelog

* Add some type specs

* Please dialyzer

src/aeso_compiler.erl

@@ -574,14 +574,13 @@ pp(Code, Options, Option, PPFun) ->
             ok
     end.
 
-
 %% -------------------------------------------------------------------
-%% TODO: Tempoary parser hook below...
 
+-spec parse_stdlib() -> none() | aeso_syntax:ast().
 parse_stdlib() ->
     lists:foldr(
       fun ({Lib, LibCode}, Acc) ->
-              parse(LibCode, [{src_file, Lib}]) ++ Acc
+              parse(LibCode, [{src_file, binary_to_list(Lib)}]) ++ Acc
       end,
       [],
       aeso_stdlib:stdlib_list()).
@@ -593,8 +592,11 @@ sophia_type_to_typerep(String) ->
     catch _:_ -> {error, bad_type}
     end.
 
+-spec parse(string(), aeso_compiler:options()) -> none() | aeso_syntax:ast().
 parse(Text, Options) ->
     parse(Text, sets:new(), Options).
+
+-spec parse(string(), sets:set(), aeso_compiler:options()) -> none() | aeso_syntax:ast().
 parse(Text, Included, Options) ->
     %% Try and return something sensible here!
     case aeso_parser:string(Text, Included, Options) of
@@ -616,6 +618,7 @@ parse(Text, Included, Options) ->
             parse_error(Pos, io_lib:format("could not find include file '~s'", [File]))
     end.
 
+-spec parse_error(aeso_parse_lib:pos(), string()) -> none().
 parse_error(Pos, ErrorString) ->
     Error = io_lib:format("~s: ~s", [pos_error(Pos), ErrorString]),
     error({parse_errors, [Error]}).