diff options
Diffstat (limited to 'lib/compiler/src/sys_core_fold.erl')
| -rw-r--r-- | lib/compiler/src/sys_core_fold.erl | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl index 6202f07479..3e572d4b27 100644 --- a/lib/compiler/src/sys_core_fold.erl +++ b/lib/compiler/src/sys_core_fold.erl @@ -1194,19 +1194,22 @@ eval_element(Call, #c_literal{val=Pos}, #c_tuple{es=Es}, _Types) when is_integer true -> eval_failure(Call, badarg) end; -%% eval_element(Call, #c_literal{val=Pos}, #c_var{name=V}, Types) -%% when is_integer(Pos) -> -%% case orddict:find(V, Types#sub.t) of -%% {ok,#c_tuple{es=Elements}} -> -%% if -%% 1 =< Pos, Pos =< length(Elements) -> -%% lists:nth(Pos, Elements); -%% true -> -%% eval_failure(Call, badarg) -%% end; -%% error -> -%% Call -%% end; +eval_element(Call, #c_literal{val=Pos}, #c_var{name=V}, Types) + when is_integer(Pos) -> + case orddict:find(V, Types#sub.t) of + {ok,#c_tuple{es=Elements}} -> + if + 1 =< Pos, Pos =< length(Elements) -> + case lists:nth(Pos, Elements) of + #c_alias{var=Alias} -> Alias; + Res -> Res + end; + true -> + eval_failure(Call, badarg) + end; + error -> + Call + end; eval_element(Call, Pos, Tuple, _Types) -> case is_not_integer(Pos) orelse is_not_tuple(Tuple) of true -> |