diff options
Diffstat (limited to 'lib/compiler/src')
| -rw-r--r-- | lib/compiler/src/sys_core_fold.erl | 10 | ||||
| -rw-r--r-- | lib/compiler/src/v3_core.erl | 38 |
2 files changed, 25 insertions, 23 deletions
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl index 0d020578f5..beab2ce897 100644 --- a/lib/compiler/src/sys_core_fold.erl +++ b/lib/compiler/src/sys_core_fold.erl @@ -70,7 +70,8 @@ -export([module/2,format_error/1]). -import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,all/2,any/2, - reverse/1,reverse/2,member/2,nth/2,flatten/1,unzip/1]). + reverse/1,reverse/2,member/2,nth/2,flatten/1, + unzip/1,keyfind/3]). -import(cerl, [ann_c_cons/3,ann_c_map/3,ann_c_tuple/2]). @@ -1624,12 +1625,11 @@ eval_case(Case, _) -> Case. eval_case_warn(#c_primop{anno=Anno, name=#c_literal{val=match_fail}, - args=[#c_literal{val=Reason}]}=Core) - when is_atom(Reason) -> - case member(eval_failure, Anno) of + args=[_]}=Core) -> + case keyfind(eval_failure, 1, Anno) of false -> ok; - true -> + {eval_failure,Reason} -> %% Example: M = not_map, M#{k:=v} add_warning(Core, {eval_failure,Reason}) end; diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl index c954d21e59..ed7b55df07 100644 --- a/lib/compiler/src/v3_core.erl +++ b/lib/compiler/src/v3_core.erl @@ -538,19 +538,8 @@ expr({tuple,L,Es0}, St0) -> {annotate_tuple(A, Es1, St1),Eps,St1}; expr({map,L,Es0}, St0) -> map_build_pairs(#c_literal{val=#{}}, Es0, full_anno(L, St0), St0); -expr({map,L,M0,Es0}, St0) -> - try expr_map(M0,Es0,lineno_anno(L, St0),St0) of - {_,_,_}=Res -> Res - catch - throw:{bad_map,Warning} -> - St = add_warning(L, Warning, St0), - LineAnno = lineno_anno(L, St), - As = [#c_literal{anno=LineAnno,val=badarg}], - {#icall{anno=#a{anno=LineAnno}, %Must have an #a{} - module=#c_literal{anno=LineAnno,val=erlang}, - name=#c_literal{anno=LineAnno,val=error}, - args=As},[],St} - end; +expr({map,L,M,Es}, St) -> + expr_map(M, Es, L, St); expr({bin,L,Es0}, St0) -> try expr_bin(Es0, full_anno(L, St0), St0) of {_,_,_}=Res -> Res @@ -758,11 +747,14 @@ make_bool_switch_guard(L, E, V, T, F) -> {clause,NegL,[V],[],[V]} ]}. -expr_map(M0, Es0, A, St0) -> +expr_map(M0, Es0, L, St0) -> {M1,Eps0,St1} = safe(M0, St0), + Badmap = badmap_term(M1, St1), + A = lineno_anno(L, St1), + Fc = fail_clause([], [{eval_failure,badmap}|A], Badmap), case is_valid_map_src(M1) of true -> - {M2,Eps1,St2} = map_build_pairs(M1, Es0, A, St1), + {M2,Eps1,St2} = map_build_pairs(M1, Es0, full_anno(L, St1), St1), M3 = case Es0 of [] -> M1; [_|_] -> M2 @@ -775,13 +767,23 @@ expr_map(M0, Es0, A, St0) -> name=#c_literal{anno=A,val=is_map}, args=[M1]}], body=[M3]}], - Fc = fail_clause([], [eval_failure|A], #c_literal{val=badarg}), Eps = Eps0 ++ Eps1, {#icase{anno=#a{anno=A},args=[],clauses=Cs,fc=Fc},Eps,St2}; false -> - throw({bad_map,bad_map}) + %% Not a map source. The update will always fail. + St2 = add_warning(L, badmap, St1), + #iclause{body=[Fail]} = Fc, + {Fail,Eps0,St2} end. +badmap_term(_Map, #core{in_guard=true}) -> + %% The code generator cannot handle complex error reasons + %% in guards. But the exact error reason does not matter anyway + %% since it is not user-visible. + #c_literal{val=badmap}; +badmap_term(Map, #core{in_guard=false}) -> + #c_tuple{es=[#c_literal{val=badmap},Map]}. + map_build_pairs(Map, Es0, Ann, St0) -> {Es,Pre,St1} = map_build_pairs_1(Es0, St0), {ann_c_map(Ann, Map, Es),Pre,St1}. @@ -2395,7 +2397,7 @@ format_error(nomatch) -> "pattern cannot possibly match"; format_error(bad_binary) -> "binary construction will fail because of a type mismatch"; -format_error(bad_map) -> +format_error(badmap) -> "map construction will fail because of a type mismatch". add_warning(Line, Term, #core{ws=Ws,file=[{file,File}]}=St) when Line >= 0 -> |