diff options
Diffstat (limited to 'lib/compiler/src/v3_kernel.erl')
| -rw-r--r-- | lib/compiler/src/v3_kernel.erl | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl index bc5ca0314a..5675572092 100644 --- a/lib/compiler/src/v3_kernel.erl +++ b/lib/compiler/src/v3_kernel.erl @@ -496,7 +496,6 @@ translate_match_fail_1(Anno, As, Sub, #kern{ff=FF}) -> translate_fc(Args) -> [#c_literal{val=function_clause},make_list(Args)]. - %{Kes,Ep,St2} = map_pairs(Ces, Sub, St1), map_split_pairs(A, Var, Ces, Sub, St0) -> %% two steps %% 1. force variables @@ -718,12 +717,8 @@ pattern(#c_tuple{anno=A,es=Ces}, Isub, Osub0, St0) -> {Kes,Osub1,St1} = pattern_list(Ces, Isub, Osub0, St0), {#k_tuple{anno=A,es=Kes},Osub1,St1}; pattern(#c_map{anno=A,es=Ces}, Isub, Osub0, St0) -> - {Kes,Osub1,St1} = pattern_list(Ces, Isub, Osub0, St0), + {Kes,Osub1,St1} = pattern_map_pairs(Ces, Isub, Osub0, St0), {#k_map{anno=A,op=exact,es=Kes},Osub1,St1}; -pattern(#c_map_pair{op=#c_literal{val=exact},anno=A,key=Ck,val=Cv},Isub, Osub0, St0) -> - {Kk,Osub1,St1} = pattern(Ck, Isub, Osub0, St0), - {Kv,Osub2,St2} = pattern(Cv, Isub, Osub1, St1), - {#k_map_pair{anno=A,key=Kk,val=Kv},Osub2,St2}; pattern(#c_binary{anno=A,segments=Cv}, Isub, Osub0, St0) -> {Kv,Osub1,St1} = pattern_bin(Cv, Isub, Osub0, St0), {#k_binary{anno=A,segs=Kv},Osub1,St1}; @@ -738,6 +733,25 @@ flatten_alias(#c_alias{var=V,pat=P}) -> {[V|Vs],Pat}; flatten_alias(Pat) -> {[],Pat}. +pattern_map_pairs(Ces0, Isub, Osub0, St0) -> + %% It is assumed that all core keys are literals + %% It is later assumed that these keys are term sorted + %% so we need to sort them here + Ces1 = lists:sort(fun + (#c_map_pair{key=CkA},#c_map_pair{key=CkB}) -> + A = core_lib:literal_value(CkA), + B = core_lib:literal_value(CkB), + erts_internal:cmp_term(A,B) < 0 + end, Ces0), + %% pattern the pair keys and values as normal + {Kes,{Osub1,St1}} = lists:mapfoldl(fun + (#c_map_pair{anno=A,key=Ck,val=Cv},{Osubi0,Sti0}) -> + {Kk,Osubi1,Sti1} = pattern(Ck, Isub, Osubi0, Sti0), + {Kv,Osubi2,Sti2} = pattern(Cv, Isub, Osubi1, Sti1), + {#k_map_pair{anno=A,key=Kk,val=Kv},{Osubi2,Sti2}} + end, {Osub0, St0}, Ces1), + {Kes,Osub1,St1}. + pattern_bin(Es, Isub, Osub0, St0) -> {Kbin,{_,Osub},St} = pattern_bin_1(Es, Isub, Osub0, St0), {Kbin,Osub,St}. @@ -1388,13 +1402,13 @@ get_match(#k_bin_int{}=BinInt, St0) -> get_match(#k_tuple{es=Es}, St0) -> {Mes,St1} = new_vars(length(Es), St0), {#k_tuple{es=Mes},Mes,St1}; -get_match(#k_map{es=Es0}, St0) -> +get_match(#k_map{op=exact,es=Es0}, St0) -> {Mes,St1} = new_vars(length(Es0), St0), {Es,_} = mapfoldl(fun (#k_map_pair{}=Pair, [V|Vs]) -> {Pair#k_map_pair{val=V},Vs} end, Mes, Es0), - {#k_map{es=Es},Mes,St1}; + {#k_map{op=exact,es=Es},Mes,St1}; get_match(M, St) -> {M,[],St}. @@ -1519,7 +1533,7 @@ arg_val(Arg, C) -> end || Pair <- Es], %% multiple keys may have the same name %% do not use ordsets - lists:sort(Keys) + lists:sort(fun(A,B) -> erts_internal:cmp_term(A,B) < 0 end, Keys) end. %% ubody_used_vars(Expr, State) -> [UsedVar] |