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-rw-r--r--lib/stdlib/src/eval_bits.erl104
1 files changed, 80 insertions, 24 deletions
diff --git a/lib/stdlib/src/eval_bits.erl b/lib/stdlib/src/eval_bits.erl
index f40904df1c..80667023fb 100644
--- a/lib/stdlib/src/eval_bits.erl
+++ b/lib/stdlib/src/eval_bits.erl
@@ -2,18 +2,19 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -67,7 +68,8 @@ expr_grp([], Bs0, _Lf, Acc) ->
{value,Acc,Bs0}.
eval_field({bin_element, _, {string, _, S}, default, default}, Bs0, _Fun) ->
- {list_to_binary(S),Bs0};
+ Latin1 = [C band 16#FF || C <- S],
+ {list_to_binary(Latin1),Bs0};
eval_field({bin_element, Line, {string, _, S}, Size0, Options0}, Bs, _Fun) ->
{_Size,[Type,_Unit,_Sign,Endian]} =
make_bit_type(Line, Size0, Options0),
@@ -162,8 +164,10 @@ bin_gen([], Bin, _Bs0, _BBs0, _Mfun, _Efun, false) ->
bin_gen_field({bin_element,_,{string,_,S},default,default},
Bin, Bs, BBs, _Mfun, _Efun) ->
- Bits = list_to_binary(S),
- Size = byte_size(Bits),
+ Bits = try list_to_binary(S)
+ catch _:_ -> <<>>
+ end,
+ Size = length(S),
case Bin of
<<Bits:Size/binary,Rest/bitstring>> ->
{match,Bs,BBs,Rest};
@@ -172,16 +176,42 @@ bin_gen_field({bin_element,_,{string,_,S},default,default},
_ ->
done
end;
+bin_gen_field({bin_element,Line,{string,SLine,S},Size0,Options0},
+ Bin0, Bs0, BBs0, Mfun, Efun) ->
+ {Size1, [Type,{unit,Unit},Sign,Endian]} =
+ make_bit_type(Line, Size0, Options0),
+ match_check_size(Mfun, Size1, BBs0),
+ {value, Size, _BBs} = Efun(Size1, BBs0),
+ F = fun(C, Bin, Bs, BBs) ->
+ bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian,
+ {integer,SLine,C}, Bs, BBs, Mfun)
+ end,
+ bin_gen_field_string(S, Bin0, Bs0, BBs0, F);
bin_gen_field({bin_element,Line,VE,Size0,Options0},
Bin, Bs0, BBs0, Mfun, Efun) ->
{Size1, [Type,{unit,Unit},Sign,Endian]} =
make_bit_type(Line, Size0, Options0),
V = erl_eval:partial_eval(VE),
- match_check_size(Mfun, Size1, BBs0),
+ NewV = coerce_to_float(V, Type),
+ match_check_size(Mfun, Size1, BBs0, false),
{value, Size, _BBs} = Efun(Size1, BBs0),
+ bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun).
+
+bin_gen_field_string([], Rest, Bs, BBs, _F) ->
+ {match,Bs,BBs,Rest};
+bin_gen_field_string([C|Cs], Bin0, Bs0, BBs0, Fun) ->
+ case Fun(C, Bin0, Bs0, BBs0) of
+ {match,Bs,BBs,Rest} ->
+ bin_gen_field_string(Cs, Rest, Bs, BBs, Fun);
+ {nomatch,Rest} ->
+ {nomatch,Rest};
+ done ->
+ done
+ end.
+
+bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun) ->
case catch get_value(Bin, Type, Size, Unit, Sign, Endian) of
{Val,<<_/bitstring>>=Rest} ->
- NewV = coerce_to_float(V, Type),
case catch Mfun(match, {NewV,Val,Bs0}) of
{match,Bs} ->
BBs = add_bin_binding(Mfun, NewV, Bs, BBs0),
@@ -223,20 +253,41 @@ match_bits_1([F|Fs], Bits0, Bs0, BBs0, Mfun, Efun) ->
match_field_1({bin_element,_,{string,_,S},default,default},
Bin, Bs, BBs, _Mfun, _Efun) ->
- Bits = list_to_binary(S),
+ Bits = list_to_binary(S), % fails if there are characters > 255
Size = byte_size(Bits),
<<Bits:Size/binary,Rest/binary-unit:1>> = Bin,
{Bs,BBs,Rest};
+match_field_1({bin_element,Line,{string,SLine,S},Size0,Options0},
+ Bin0, Bs0, BBs0, Mfun, Efun) ->
+ {Size1, [Type,{unit,Unit},Sign,Endian]} =
+ make_bit_type(Line, Size0, Options0),
+ Size2 = erl_eval:partial_eval(Size1),
+ match_check_size(Mfun, Size2, BBs0),
+ {value, Size, _BBs} = Efun(Size2, BBs0),
+ F = fun(C, Bin, Bs, BBs) ->
+ match_field(Bin, Type, Size, Unit, Sign, Endian,
+ {integer,SLine,C}, Bs, BBs, Mfun)
+ end,
+ match_field_string(S, Bin0, Bs0, BBs0, F);
match_field_1({bin_element,Line,VE,Size0,Options0},
Bin, Bs0, BBs0, Mfun, Efun) ->
{Size1, [Type,{unit,Unit},Sign,Endian]} =
make_bit_type(Line, Size0, Options0),
V = erl_eval:partial_eval(VE),
+ NewV = coerce_to_float(V, Type),
Size2 = erl_eval:partial_eval(Size1),
match_check_size(Mfun, Size2, BBs0),
{value, Size, _BBs} = Efun(Size2, BBs0),
+ match_field(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun).
+
+match_field_string([], Rest, Bs, BBs, _Fun) ->
+ {Bs,BBs,Rest};
+match_field_string([C|Cs], Bin0, Bs0, BBs0, Fun) ->
+ {Bs,BBs,Bin} = Fun(C, Bin0, Bs0, BBs0),
+ match_field_string(Cs, Bin, Bs, BBs, Fun).
+
+match_field(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun) ->
{Val,Rest} = get_value(Bin, Type, Size, Unit, Sign, Endian),
- NewV = coerce_to_float(V, Type),
{match,Bs} = Mfun(match, {NewV,Val,Bs0}),
BBs = add_bin_binding(Mfun, NewV, Bs, BBs0),
{Bs,BBs,Rest}.
@@ -330,20 +381,25 @@ make_bit_type(_Line, Size, Type0) -> %Size evaluates to an integer or 'all'
{error,Reason} -> error(Reason)
end.
-match_check_size(Mfun, {var,_,V}, Bs) ->
+match_check_size(Mfun, Size, Bs) ->
+ match_check_size(Mfun, Size, Bs, true).
+
+match_check_size(Mfun, {var,_,V}, Bs, _AllowAll) ->
case Mfun(binding, {V,Bs}) of
{value,_} -> ok;
unbound -> throw(invalid) % or, rather, error({unbound,V})
end;
-match_check_size(_, {atom,_,all}, _Bs) ->
+match_check_size(_, {atom,_,all}, _Bs, true) ->
ok;
-match_check_size(_, {atom,_,undefined}, _Bs) ->
+match_check_size(_, {atom,_,all}, _Bs, false) ->
+ throw(invalid);
+match_check_size(_, {atom,_,undefined}, _Bs, _AllowAll) ->
ok;
-match_check_size(_, {integer,_,_}, _Bs) ->
+match_check_size(_, {integer,_,_}, _Bs, _AllowAll) ->
ok;
-match_check_size(_, {value,_,_}, _Bs) ->
+match_check_size(_, {value,_,_}, _Bs, _AllowAll) ->
ok; %From the debugger.
-match_check_size(_, _, _Bs) ->
+match_check_size(_, _, _Bs, _AllowAll) ->
throw(invalid).
%% error(Reason) -> exception thrown
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-29 14:15:42 +0000