Include all functions in the symbols map (#418)

* Include all functions in the symbols map

* .

* remove improper wording

* Use update_symbols exported from aebytecode

* Extract adding child symbols into a separate fun

* Make child contracts symbols optional

* Document include_child_contract_symbols option

Co-authored-by: Gaith Hallak <gaithhallak@gmail.com>

src/aeso_fcode_to_fate.erl

@@ -80,7 +80,10 @@ compile(ChildContracts, FCode, Options) ->
     SFuns1 = optimize_scode(SFuns, Options),
     FateCode = to_basic_blocks(SFuns1),
     ?debug(compile, Options, "~s\n", [aeb_fate_asm:pp(FateCode)]),
-    FateCode.
+    case proplists:get_value(include_child_contract_symbols, Options, false) of
+        false -> FateCode;
+        true -> add_child_symbols(ChildContracts, FateCode)
+    end.
 
 make_function_id(X) ->
     aeb_fate_code:symbol_identifier(make_function_name(X)).
@@ -89,6 +92,11 @@ make_function_name(event)              -> <<"Chain.event">>;
 make_function_name({entrypoint, Name}) -> Name;
 make_function_name({local_fun, Xs})    -> list_to_binary("." ++ string:join(Xs, ".")).
 
+add_child_symbols(ChildContracts, FateCode) ->
+    Funs = lists:flatten([ maps:keys(ChildFuns) || {_, #{functions := ChildFuns}} <- maps:to_list(ChildContracts) ]),
+    Symbols = maps:from_list([ {make_function_id(FName), make_function_name(FName)} || FName <- Funs ]),
+    aeb_fate_code:update_symbols(FateCode, Symbols).
+
 functions_to_scode(ChildContracts, ContractName, Functions, Options) ->
     FunNames = maps:keys(Functions),
     maps:from_list(