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-rw-r--r--lib/compiler/src/cerl.erl26
-rw-r--r--lib/compiler/src/core_parse.hrl3
-rw-r--r--lib/compiler/src/core_parse.yrl64
-rw-r--r--lib/compiler/src/v3_core.erl2
4 files changed, 78 insertions, 17 deletions
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl
index 7a2c3d70de..96c8e02542 100644
--- a/lib/compiler/src/cerl.erl
+++ b/lib/compiler/src/cerl.erl
@@ -123,11 +123,13 @@
bitstr_flags/1,
%% keep map exports here for now
+ c_map_pattern/1,
map_es/1,
map_arg/1,
update_c_map/3,
c_map/1, is_c_map_empty/1,
ann_c_map/2, ann_c_map/3,
+ ann_c_map_pattern/2,
map_pair_op/1,map_pair_key/1,map_pair_val/1,
update_c_map_pair/4,
c_map_pair/2,
@@ -1590,7 +1592,17 @@ map_arg(#c_map{arg=M}) ->
-spec c_map([c_map_pair()]) -> c_map().
c_map(Pairs) ->
- #c_map{es=Pairs}.
+ ann_c_map([], Pairs).
+
+-spec c_map_pattern([c_map_pair()]) -> c_map().
+
+c_map_pattern(Pairs) ->
+ #c_map{es=Pairs, is_pat=true}.
+
+-spec ann_c_map_pattern([term()], [c_map_pair()]) -> c_map().
+
+ann_c_map_pattern(As, Pairs) ->
+ #c_map{anno=As, es=Pairs, is_pat=true}.
-spec is_c_map_empty(c_map() | c_literal()) -> boolean().
@@ -1598,9 +1610,9 @@ is_c_map_empty(#c_map{ es=[] }) -> true;
is_c_map_empty(#c_literal{val=M}) when is_map(M),map_size(M) =:= 0 -> true;
is_c_map_empty(_) -> false.
--spec ann_c_map([term()], [cerl()]) -> c_map() | c_literal().
+-spec ann_c_map([term()], [c_map_pair()]) -> c_map() | c_literal().
-ann_c_map(As,Es) ->
+ann_c_map(As, Es) ->
ann_c_map(As, #c_literal{val=#{}}, Es).
-spec ann_c_map([term()], c_map() | c_literal(), [c_map_pair()]) -> c_map() | c_literal().
@@ -1648,10 +1660,12 @@ fold_map_pairs(As,[#c_map_pair{op=#c_literal{val=exact},key=Ck,val=Cv}=E|Es],M)
fold_map_pairs(As,Es,M) ->
#c_map{arg=#c_literal{val=M,anno=As}, es=Es, anno=As }.
-%-spec update_c_map(c_map() | c_literal(), [c_map_pair()]) -> c_map() | c_literal().
+-spec update_c_map(c_map(), cerl(), [cerl()]) -> c_map() | c_literal().
-update_c_map(Old,M,Es) ->
- #c_map{arg=M, es = Es, anno = get_ann(Old)}.
+update_c_map(#c_map{is_pat=true}=Old, M, Es) ->
+ Old#c_map{arg=M, es=Es};
+update_c_map(#c_map{is_pat=false}=Old, M, Es) ->
+ ann_c_map(get_ann(Old), M, Es).
map_pair_key(#c_map_pair{key=K}) -> K.
map_pair_val(#c_map_pair{val=V}) -> V.
diff --git a/lib/compiler/src/core_parse.hrl b/lib/compiler/src/core_parse.hrl
index 4a00535360..7fd4a82e4e 100644
--- a/lib/compiler/src/core_parse.hrl
+++ b/lib/compiler/src/core_parse.hrl
@@ -72,7 +72,8 @@
-record(c_map, {anno=[],
arg=#c_literal{val=#{}} :: cerl:c_var() | cerl:c_literal(),
- es :: [cerl:c_map_pair()]}).
+ es :: [cerl:c_map_pair()],
+ is_pat=false :: boolean()}).
-record(c_map_pair, {anno=[],
op :: #c_literal{val::'assoc'} | #c_literal{val::'exact'},
diff --git a/lib/compiler/src/core_parse.yrl b/lib/compiler/src/core_parse.yrl
index a66ad4235f..716c03bc94 100644
--- a/lib/compiler/src/core_parse.yrl
+++ b/lib/compiler/src/core_parse.yrl
@@ -182,14 +182,14 @@ atomic_pattern -> atomic_literal : '$1'.
tuple_pattern -> '{' '}' : c_tuple([]).
tuple_pattern -> '{' anno_patterns '}' : c_tuple('$2').
-map_pattern -> '~' '{' '}' '~' : #c_map{es=[]}.
+map_pattern -> '~' '{' '}' '~' : c_map_pattern([]).
map_pattern -> '~' '{' map_pair_patterns '}' '~' :
- #c_map{es=lists:sort('$3')}.
+ c_map_pattern(lists:sort('$3')).
map_pair_patterns -> map_pair_pattern : ['$1'].
map_pair_patterns -> map_pair_pattern ',' map_pair_patterns : ['$1' | '$3'].
-map_pair_pattern -> '~' '<' anno_pattern ',' anno_pattern '>' :
+map_pair_pattern -> '~' '<' anno_expression ',' anno_pattern '>' :
#c_map_pair{op=#c_literal{val=exact},key='$3',val='$5'}.
cons_pattern -> '[' anno_pattern tail_pattern :
@@ -284,10 +284,10 @@ tail_literal -> ',' literal tail_literal : #c_cons{hd='$2',tl='$3'}.
tuple -> '{' '}' : c_tuple([]).
tuple -> '{' anno_expressions '}' : c_tuple('$2').
-map_expr -> '~' '{' '}' '~' : #c_map{es=[]}.
-map_expr -> '~' '{' map_pairs '}' '~' : #c_map{es='$3'}.
-map_expr -> '~' '{' map_pairs '|' variable '}' '~' : #c_map{arg='$5',es='$3'}.
-map_expr -> '~' '{' map_pairs '|' map_expr '}' '~' : #c_map{arg='$5',es='$3'}.
+map_expr -> '~' '{' '}' '~' : c_map([]).
+map_expr -> '~' '{' map_pairs '}' '~' : c_map('$3').
+map_expr -> '~' '{' map_pairs '|' variable '}' '~' : ann_c_map([], '$5', '$3').
+map_expr -> '~' '{' map_pairs '|' map_expr '}' '~' : ann_c_map([], '$5', '$3').
map_pairs -> map_pair : ['$1'].
map_pairs -> map_pair ',' map_pairs : ['$1' | '$3'].
@@ -307,7 +307,7 @@ tail -> '|' anno_expression ']' : '$2'.
tail -> ',' anno_expression tail : c_cons('$2', '$3').
binary -> '#' '{' '}' '#' : #c_literal{val = <<>>}.
-binary -> '#' '{' segments '}' '#' : #c_binary{segments='$3'}.
+binary -> '#' '{' segments '}' '#' : make_binary('$3').
segments -> segment ',' segments : ['$1' | '$3'].
segments -> segment : ['$1'].
@@ -410,9 +410,55 @@ Erlang code.
-include("core_parse.hrl").
--import(cerl, [c_cons/2,c_tuple/1]).
+-import(cerl, [ann_c_map/3,c_cons/2,c_map/1,c_map_pattern/1,c_tuple/1]).
tok_val(T) -> element(3, T).
tok_line(T) -> element(2, T).
+%% make_binary([#c_bitstr{}]) -> #c_binary{} | #c_literal{}
+%% Create either #c_binary{} or #c_literal{} from the binary segments.
+%% In certain contexts, such as keys for maps, only literals and
+%% variables are allowed, so we must not create a #c_binary{}
+%% record in those situation.
+%%
+%% To keep this function simple, we use a crude heuristic. We will
+%% assume that Core Erlang has been produced by core_pp. If the
+%% segments *could* have been output from a literal binary by
+%% core_pp, we will create a #c_literal{}. Otherwise we will create a
+%% #c_binary{} record.
+
+make_binary(Segs) ->
+ try make_lit_bin(<<>>, Segs) of
+ Bs when is_bitstring(Bs) ->
+ #c_literal{val=Bs}
+ catch
+ throw:impossible ->
+ #c_binary{segments=Segs}
+ end.
+
+make_lit_bin(Acc, [#c_bitstr{val=I0,size=Sz0,unit=U0,type=Type0,flags=F0}|T]) ->
+ I = get_lit_val(I0),
+ Sz = get_lit_val(Sz0),
+ U = get_lit_val(U0),
+ Type = get_lit_val(Type0),
+ F = get_lit_val(F0),
+ if
+ is_integer(I), U =:= 1, Type =:= integer, F =:= [unsigned,big] ->
+ ok;
+ true ->
+ throw(impossible)
+ end,
+ if
+ Sz =< 8, T =:= [] ->
+ <<Acc/binary,I:Sz>>;
+ Sz =:= 8 ->
+ make_lit_bin(<<Acc/binary,I:8>>, T);
+ true ->
+ throw(impossible)
+ end;
+make_lit_bin(Acc, []) -> Acc.
+
+get_lit_val(#c_literal{val=Val}) -> Val;
+get_lit_val(_) -> throw(impossible).
+
%% vim: syntax=erlang
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index b861de3bbb..1d5eb85a1c 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -1638,7 +1638,7 @@ pattern({tuple,L,Ps}, St) ->
{annotate_tuple(record_anno(L, St), Ps1, St),Eps,St1};
pattern({map,L,Pairs}, St0) ->
{Ps,Eps,St1} = pattern_map_pairs(Pairs, St0),
- {#c_map{anno=lineno_anno(L, St1), es=Ps},Eps,St1};
+ {#c_map{anno=lineno_anno(L, St1),es=Ps,is_pat=true},Eps,St1};
pattern({bin,L,Ps}, St) ->
%% We don't create a #ibinary record here, since there is
%% no need to hold any used/new annotations in a pattern.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 07:20:50 +0000