Disable unused type warnings for type used inside of records (#492)

* Do not show warning for types used in records

* Exclude .vscode in .gitignore

* Update CHANGELOG.md

.gitignore

@@ -24,3 +24,4 @@ current_counterexample.eqc
 test/contracts/test.aes
 __pycache__
 .docssite/docs/*.md
+.vscode

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   include paths are now always relative to the file containing the `include` statement.
 ### Removed
 ### Fixed
+- Disable unused type warnings for types used inside of records.
 
 ## [7.4.0]
 ### Changed

src/aeso_ast_infer_types.erl

@@ -924,14 +924,14 @@ infer(Contracts, Options) ->
         {Env1, Decls} = infer1(Env, Contracts1, [], Options),
         when_warning(warn_unused_functions, fun() -> destroy_and_report_unused_functions() end),
         when_option(warn_error, fun() -> destroy_and_report_warnings_as_type_errors() end),
-        WarningsUnsorted = lists:map(fun mk_warning/1, ets_tab2list(warnings)),
-        Warnings = aeso_warnings:sort_warnings(WarningsUnsorted),
         {Env2, DeclsFolded, DeclsUnfolded} =
             case proplists:get_value(dont_unfold, Options, false) of
                 true  -> {Env1, Decls, Decls};
                 false -> E = on_scopes(Env1, fun(Scope) -> unfold_record_types(Env1, Scope) end),
                          {E, Decls, unfold_record_types(E, Decls)}
             end,
+        WarningsUnsorted = lists:map(fun mk_warning/1, ets_tab2list(warnings)),
+        Warnings = aeso_warnings:sort_warnings(WarningsUnsorted),
         case proplists:get_value(return_env, Options, false) of
             false -> {DeclsFolded, DeclsUnfolded, Warnings};
             true  -> {Env2, DeclsFolded, DeclsUnfolded, Warnings}

test/aeso_compiler_tests.erl

@@ -70,6 +70,7 @@ simple_compile_test_() ->
        fun() ->
            #{ warnings := Warnings } = compile("warnings", [warn_all]),
            #{ warnings := [] } = compile("warning_unused_include_no_include", [warn_all]),
+           #{ warnings := [] } = compile("warning_used_record_typedef", [warn_all]),
            check_warnings(warnings(), Warnings)
        end} ] ++
     [].

test/contracts/warning_used_record_typedef.aes

@@ -0,0 +1,5 @@
+contract Test =
+    type option_int = option(int)
+    record option_point = {x: int, y: option_int}
+
+    entrypoint test_option_record(a: option_point) = a