diff options
Diffstat (limited to 'lib/stdlib/src/eval_bits.erl')
| -rw-r--r-- | lib/stdlib/src/eval_bits.erl | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/lib/stdlib/src/eval_bits.erl b/lib/stdlib/src/eval_bits.erl index 80667023fb..bb86a65c72 100644 --- a/lib/stdlib/src/eval_bits.erl +++ b/lib/stdlib/src/eval_bits.erl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2016. All Rights Reserved. +%% Copyright Ericsson AB 1999-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -25,6 +25,9 @@ -export([expr_grp/3,expr_grp/5,match_bits/6, match_bits/7,bin_gen/6]). +-define(STACKTRACE, + element(2, erlang:process_info(self(), current_stacktrace))). + %% Types used in this module: %% @type bindings(). An abstract structure for bindings between %% variables and values (the environment) @@ -67,16 +70,20 @@ expr_grp([Field | FS], Bs0, Lf, Acc) -> expr_grp([], Bs0, _Lf, Acc) -> {value,Acc,Bs0}. +eval_field({bin_element, _, {string, _, S}, {integer,_,8}, [integer,{unit,1},unsigned,big]}, Bs0, _Fun) -> + Latin1 = [C band 16#FF || C <- S], + {list_to_binary(Latin1),Bs0}; eval_field({bin_element, _, {string, _, S}, default, default}, Bs0, _Fun) -> 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]} = +eval_field({bin_element, Line, {string, _, S}, Size0, Options0}, Bs0, Fun) -> + {Size1,[Type,{unit,Unit},Sign,Endian]} = make_bit_type(Line, Size0, Options0), - Res = << <<(eval_exp_field1(C, no_size, no_unit, - Type, Endian, no_sign))/binary>> || + {value,Size,Bs1} = Fun(Size1, Bs0), + Res = << <<(eval_exp_field1(C, Size, Unit, + Type, Endian, Sign))/binary>> || C <- S >>, - {Res,Bs}; + {Res,Bs1}; eval_field({bin_element,Line,E,Size0,Options0}, Bs0, Fun) -> {value,V,Bs1} = Fun(E, Bs0), {Size1,[Type,{unit,Unit},Sign,Endian]} = @@ -89,9 +96,9 @@ eval_exp_field1(V, Size, Unit, Type, Endian, Sign) -> eval_exp_field(V, Size, Unit, Type, Endian, Sign) catch error:system_limit -> - error(system_limit); + erlang:raise(error, system_limit, ?STACKTRACE); error:_ -> - error(badarg) + erlang:raise(error, badarg, ?STACKTRACE) end. eval_exp_field(Val, Size, Unit, integer, little, signed) -> @@ -127,7 +134,7 @@ eval_exp_field(Val, all, Unit, binary, _, _) -> Size when Size rem Unit =:= 0 -> <<Val:Size/binary-unit:1>>; _ -> - error(badarg) + erlang:raise(error, badarg, ?STACKTRACE) end; eval_exp_field(Val, Size, Unit, binary, _, _) -> <<Val:(Size*Unit)/binary-unit:1>>. @@ -373,12 +380,12 @@ make_bit_type(Line, default, Type0) -> {ok,all,Bt} -> {{atom,Line,all},erl_bits:as_list(Bt)}; {ok,undefined,Bt} -> {{atom,Line,undefined},erl_bits:as_list(Bt)}; {ok,Size,Bt} -> {{integer,Line,Size},erl_bits:as_list(Bt)}; - {error,Reason} -> error(Reason) + {error,Reason} -> erlang:raise(error, Reason, ?STACKTRACE) end; make_bit_type(_Line, Size, Type0) -> %Size evaluates to an integer or 'all' case erl_bits:set_bit_type(Size, Type0) of {ok,Size,Bt} -> {Size,erl_bits:as_list(Bt)}; - {error,Reason} -> error(Reason) + {error,Reason} -> erlang:raise(error, Reason, ?STACKTRACE) end. match_check_size(Mfun, Size, Bs) -> @@ -401,9 +408,3 @@ match_check_size(_, {value,_,_}, _Bs, _AllowAll) -> ok; %From the debugger. match_check_size(_, _, _Bs, _AllowAll) -> throw(invalid). - -%% error(Reason) -> exception thrown -%% Throw a nice-looking exception, similar to exceptions from erl_eval. -error(Reason) -> - erlang:raise(error, Reason, [{erl_eval,expr,3}]). - |