%% vim: tabstop=8:shiftwidth=4
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2017. 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.
%% 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%
%%
%%
-module(asn1ct).
%% Compile Time functions for ASN.1 (e.g ASN.1 compiler).
%% Public exports
-export([compile/1, compile/2]).
-export([test/1, test/2, test/3, value/2, value/3]).
%% Application internal exports
-export([compile_asn/3,compile_asn1/3,compile_py/3,compile/3,
vsn/0,
get_name_of_def/1,get_pos_of_def/1,
unset_pos_mod/1]).
-export([read_config_data/1,get_gen_state_field/1,
partial_inc_dec_toptype/1,update_gen_state/2,
get_tobe_refed_func/1,reset_gen_state/0,is_function_generated/1,
generated_refed_func/1,next_refed_func/0,
update_namelist/1,step_in_constructed/0,
add_tobe_refed_func/1,add_generated_refed_func/1,
maybe_rename_function/3,current_sindex/0,
set_current_sindex/1,maybe_saved_sindex/2,
parse_and_save/2,verbose/3,warning/3,warning/4,error/3,format_error/1]).
-export([get_bit_string_format/0,use_legacy_types/0]).
-include("asn1_records.hrl").
-include_lib("stdlib/include/erl_compile.hrl").
-include_lib("kernel/include/file.hrl").
-import(asn1ct_gen_ber_bin_v2,[encode_tag_val/3,decode_class/1]).
-ifndef(vsn).
-define(vsn,"0.0.1").
-endif.
-define(unique_names,0).
-define(dupl_uniquedefs,1).
-define(dupl_equaldefs,2).
-define(dupl_eqdefs_uniquedefs,?dupl_equaldefs bor ?dupl_uniquedefs).
-define(CONSTRUCTED, 2#00100000).
%% macros used for partial decode commands
-define(CHOOSEN,choosen).
-define(SKIP,skip).
-define(SKIP_OPTIONAL,skip_optional).
%% macros used for partial incomplete decode commands
-define(MANDATORY,mandatory).
-define(DEFAULT,default).
-define(OPTIONAL,opt).
-define(OPTIONAL_UNDECODED,opt_undec).
-define(PARTS,parts).
-define(UNDECODED,undec).
-define(ALTERNATIVE,alt).
-define(ALTERNATIVE_UNDECODED,alt_undec).
-define(ALTERNATIVE_PARTS,alt_parts).
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% This is the interface to the compiler
compile(File) ->
compile(File,[]).
compile(File, Options0) when is_list(Options0) ->
try translate_options(Options0) of
Options1 ->
Options2 = includes(File,Options1),
Includes = strip_includes(Options2),
in_process(fun() -> compile_proc(File, Includes, Options2) end)
catch throw:Error ->
Error
end.
-record(st,
{file=[],
files=[],
inputmodules=[],
code,
opts=[],
outfile,
dbfile,
includes=[],
erule,
error=none,
run
}).
compile_proc(File, Includes, Options) ->
Erule = get_rule(Options),
St = #st{opts=Options,includes=Includes,erule=Erule},
case input_file_type(File, Includes) of
{single_file, SuffixedFile} -> %% "e.g. "/tmp/File.asn"
compile1(SuffixedFile, St);
{multiple_files_file, SetBase, FileName} ->
case get_file_list(FileName, Includes) of
FileList when is_list(FileList) ->
compile_set(SetBase, FileList, St);
Err ->
Err
end;
Err = {input_file_error, _Reason} ->
{error, Err}
end.
set_passes() ->
[{pass,scan_parse,fun set_scan_parse_pass/1},
{pass,merge,fun merge_pass/1}|common_passes()].
single_passes() ->
[{pass,scan,fun scan_pass/1},
{pass,parse,fun parse_pass/1}|common_passes()].
parse_and_save_passes() ->
[{pass,scan,fun scan_pass/1},
{pass,parse,fun parse_pass/1},
{pass,save,fun save_pass/1}].
common_passes() ->
[{iff,parse,{pass,parse_listing,fun parse_listing/1}},
{pass,check,fun check_pass/1},
{iff,abs,{pass,abs_listing,fun abs_listing/1}},
{pass,generate,fun generate_pass/1},
{unless,noobj,{pass,compile,fun compile_pass/1}}].
scan_pass(#st{file=File}=St) ->
case asn1ct_tok:file(File) of
{error,Reason} ->
{error,St#st{error=Reason}};
Tokens when is_list(Tokens) ->
{ok,St#st{code=Tokens}}
end.
set_scan_parse_pass(#st{files=Files}=St) ->
try
L = set_scan_parse_pass_1(Files, St),
{ok,St#st{code=L}}
catch
throw:Error ->
{error,St#st{error=Error}}
end.
set_scan_parse_pass_1([F|Fs], #st{file=File}=St) ->
case asn1ct_tok:file(F) of
{error,Error} ->
throw(Error);
Tokens when is_list(Tokens) ->
case asn1ct_parser2:parse(File, Tokens) of
{ok,M} ->
[M|set_scan_parse_pass_1(Fs, St)];
{error,Errors} ->
throw(Errors)
end
end;
set_scan_parse_pass_1([], _) -> [].
parse_pass(#st{file=File,code=Tokens}=St) ->
case asn1ct_parser2:parse(File, Tokens) of
{ok,M} ->
{ok,St#st{code=M}};
{error,Errors} ->
{error,St#st{error=Errors}}
end.
merge_pass(#st{file=Base,code=Code}=St) ->
M = merge_modules(Code, Base),
{ok,St#st{code=M}}.
check_pass(#st{code=M,file=File,includes=Includes,
erule=Erule,dbfile=DbFile,opts=Opts,
inputmodules=InputModules}=St) ->
start(Includes),
case asn1ct_check:storeindb(#state{erule=Erule,options=Opts}, M) of
ok ->
Module = asn1_db:dbget(M#module.name, 'MODULE'),
State = #state{mname=Module#module.name,
module=Module#module{typeorval=[]},
erule=Erule,
inputmodules=InputModules,
options=Opts,
sourcedir=filename:dirname(File)},
case asn1ct_check:check(State, Module#module.typeorval) of
{error,Reason} ->
{error,St#st{error=Reason}};
{ok,NewTypeOrVal,GenTypeOrVal} ->
NewM = Module#module{typeorval=NewTypeOrVal},
asn1_db:dbput(NewM#module.name, 'MODULE', NewM),
asn1_db:dbsave(DbFile, M#module.name),
verbose("--~p--~n", [{generated,DbFile}], Opts),
{ok,St#st{code={M,GenTypeOrVal}}}
end;
{error,Reason} ->
{error,St#st{error=Reason}}
end.
save_pass(#st{code=M,erule=Erule,opts=Opts}=St) ->
ok = asn1ct_check:storeindb(#state{erule=Erule,options=Opts}, M),
{ok,St}.
parse_listing(#st{code=Code,outfile=OutFile0}=St) ->
OutFile = OutFile0 ++ ".parse",
case file:write_file(OutFile, io_lib:format("~p\n", [Code])) of
ok ->
done;
{error,Reason} ->
Error = {write_error,OutFile,Reason},
{error,St#st{error=[{structured_error,{OutFile0,none},?MODULE,Error}]}}
end.
abs_listing(#st{code={M,_},outfile=OutFile}) ->
pretty2(M#module.name, OutFile++".abs"),
done.
generate_pass(#st{code=Code,outfile=OutFile,erule=Erule,opts=Opts}=St0) ->
St = St0#st{code=undefined}, %Reclaim heap space
generate(Code, OutFile, Erule, Opts),
{ok,St}.
compile_pass(#st{outfile=OutFile,opts=Opts0}=St) ->
asn1_db:dbstop(), %Reclaim memory.
asn1ct_table:delete([renamed_defs,original_imports,automatic_tags]),
Opts = remove_asn_flags(Opts0),
case c:c(OutFile, Opts) of
{ok,_Module} ->
{ok,St};
_ ->
{error,St}
end.
run_passes(Passes, #st{opts=Opts}=St) ->
Run = case lists:member(time, Opts) of
false ->
fun(_, Pass, S) -> Pass(S) end;
true ->
fun run_tc/3
end,
run_passes_1(Passes, St#st{run=Run}).
run_tc(Name, Fun, St) ->
Before0 = statistics(runtime),
Val = (catch Fun(St)),
After0 = statistics(runtime),
{Before_c, _} = Before0,
{After_c, _} = After0,
io:format("~-31s: ~10.2f s\n",
[Name,(After_c-Before_c) / 1000]),
Val.
run_passes_1([{unless,Opt,Pass}|Passes], #st{opts=Opts}=St) ->
case proplists:get_bool(Opt, Opts) of
false ->
run_passes_1([Pass|Passes], St);
true ->
run_passes_1(Passes, St)
end;
run_passes_1([{iff,Opt,Pass}|Passes], #st{opts=Opts}=St) ->
case proplists:get_bool(Opt, Opts) of
true ->
run_passes_1([Pass|Passes], St);
false ->
run_passes_1(Passes, St)
end;
run_passes_1([{pass,Name,Pass}|Passes], #st{run=Run}=St0)
when is_function(Pass, 1) ->
try Run(Name, Pass, St0) of
{ok,St} ->
run_passes_1(Passes, St);
{error,#st{error=Errors}} ->
{Structured,AllErrors} = clean_errors(Errors),
print_structured_errors(Structured),
{error,AllErrors};
done ->
ok
catch
Class:Error:Stk ->
io:format("Internal error: ~p:~p\n~p\n",
[Class,Error,Stk]),
{error,{internal_error,{Class,Error}}}
end;
run_passes_1([], _St) ->
ok.
clean_errors(Errors) when is_list(Errors) ->
F = fun({structured_error,_,_,_}) -> true;
(_) -> false
end,
{Structured0,AdHoc} = lists:partition(F, Errors),
Structured = lists:sort(Structured0),
{Structured,Structured ++ AdHoc};
clean_errors(AdHoc) -> {[],AdHoc}.
print_structured_errors([_|_]=Errors) ->
_ = [io:format("~ts:~w: ~ts\n", [F,L,M:format_error(E)]) ||
{structured_error,{F,L},M,E} <- Errors],
ok;
print_structured_errors(_) -> ok.
compile1(File, #st{opts=Opts}=St0) ->
compiler_verbose(File, Opts),
Passes = single_passes(),
Base = filename:rootname(filename:basename(File)),
OutFile = outfile(Base, "", Opts),
DbFile = outfile(Base, "asn1db", Opts),
St1 = St0#st{file=File,outfile=OutFile,dbfile=DbFile},
run_passes(Passes, St1).
%%****************************************************************************%%
%% functions dealing with compiling of several input files to one output file %%
%%****************************************************************************%%
%% compile_set/3 merges and compiles a number of asn1 modules
%% specified in a .set.asn file to one .erl file.
compile_set(SetBase, Files, #st{opts=Opts}=St0) ->
compiler_verbose(Files, Opts),
OutFile = outfile(SetBase, "", Opts),
DbFile = outfile(SetBase, "asn1db", Opts),
InputModules = [begin
F1 = filename:basename(F0),
F = filename:rootname(F1),
list_to_atom(F)
end || F0 <- Files],
St = St0#st{file=SetBase,files=Files,outfile=OutFile,
dbfile=DbFile,inputmodules=InputModules},
Passes = set_passes(),
run_passes(Passes, St).
compiler_verbose(What, Opts) ->
verbose("Erlang ASN.1 compiler ~s\n", [?vsn], Opts),
verbose("Compiling: ~p\n", [What], Opts),
verbose("Options: ~p\n", [Opts], Opts).
%% merge_modules/2 -> returns a module record where the typeorval lists are merged,
%% the exports lists are merged, the imports lists are merged when the
%% elements come from other modules than the merge set, the tagdefault
%% field gets the shared value if all modules have same tagging scheme,
%% otherwise a tagging_error exception is thrown,
%% the extensiondefault ...(not handled yet).
merge_modules(ModuleList, CommonName) ->
NewModuleList = remove_name_collisions(ModuleList),
case asn1ct_table:size(renamed_defs) of
0 -> asn1ct_table:delete(renamed_defs);
_ -> ok
end,
save_imports(NewModuleList),
TypeOrVal = lists:append(lists:map(fun(X)->X#module.typeorval end,
NewModuleList)),
InputMNameList = lists:map(fun(X)->X#module.name end,
NewModuleList),
CExports = common_exports(NewModuleList),
ImportsModuleNameList = lists:map(fun(X)->
{X#module.imports,
X#module.name} end,
NewModuleList),
%% ImportsModuleNameList: [{Imports,ModuleName},...]
%% Imports is a tuple {imports,[#'SymbolsFromModule'{},...]}
CImports = common_imports(ImportsModuleNameList,InputMNameList),
TagDefault = check_tagdefault(NewModuleList),
#module{name=CommonName,tagdefault=TagDefault,exports=CExports,
imports=CImports,typeorval=TypeOrVal}.
%% causes an exit if duplicate definition names exist in a module
remove_name_collisions(Modules) ->
asn1ct_table:new(renamed_defs),
%% Name duplicates in the same module is not allowed.
lists:foreach(fun exit_if_nameduplicate/1,Modules),
%% Then remove duplicates in different modules and return the
%% new list of modules.
remove_name_collisions2(Modules,[]).
%% For each definition in the first module in module list, find
%% all definitons with same name and rename both definitions in
%% the first module and in rest of modules
remove_name_collisions2([M|Ms],Acc) ->
TypeOrVal = M#module.typeorval,
MName = M#module.name,
%% Test each name in TypeOrVal on all modules in Ms
{NewM,NewMs} = remove_name_collisions2(MName,TypeOrVal,Ms,[]),
remove_name_collisions2(NewMs,[M#module{typeorval=NewM}|Acc]);
remove_name_collisions2([],Acc) ->
finished_warn_prints(),
Acc.
%% For each definition in list of defs find definitions in (rest of)
%% modules that have same name. If duplicate was found rename def.
%% Test each name in [T|Ts] on all modules in Ms
remove_name_collisions2(ModName,[T|Ts],Ms,Acc) ->
Name = get_name_of_def(T),
case discover_dupl_in_mods(Name,T,Ms,[],?unique_names) of
{_,?unique_names} -> % there was no name collision
remove_name_collisions2(ModName,Ts,Ms,[T|Acc]);
{NewMs,?dupl_uniquedefs} -> % renamed defs in NewMs
%% rename T
NewT = set_name_of_def(ModName,Name,T), %rename def
warn_renamed_def(ModName,get_name_of_def(NewT),Name),
asn1ct_table:insert(renamed_defs,
{get_name_of_def(NewT), Name, ModName}),
remove_name_collisions2(ModName,Ts,NewMs,[NewT|Acc]);
{NewMs,?dupl_equaldefs} -> % name duplicates, but identical defs
%% keep name of T
warn_kept_def(ModName,Name),
remove_name_collisions2(ModName,Ts,NewMs,[T|Acc]);
{NewMs,?dupl_eqdefs_uniquedefs} ->
%% keep name of T, renamed defs in NewMs
warn_kept_def(ModName,Name),
remove_name_collisions2(ModName,Ts,NewMs,[T|Acc])
end;
remove_name_collisions2(_,[],Ms,Acc) ->
{Acc,Ms}.
%% Name is the name of a definition. If a definition with the same name
%% is found in the modules Ms the definition will be renamed and returned.
discover_dupl_in_mods(Name,Def,[M=#module{name=N,typeorval=TorV}|Ms],
Acc,AnyRenamed) ->
Fun = fun(T,RenamedOrDupl)->
case {get_name_of_def(T),compare_defs(Def,T)} of
{Name,not_equal} ->
%% rename def
NewT=set_name_of_def(N,Name,T),
warn_renamed_def(N,get_name_of_def(NewT),Name),
asn1ct_table:insert(renamed_defs,
{get_name_of_def(NewT), Name, N}),
{NewT,?dupl_uniquedefs bor RenamedOrDupl};
{Name,equal} ->
%% delete def
warn_deleted_def(N,Name),
{[],?dupl_equaldefs bor RenamedOrDupl};
_ ->
{T,RenamedOrDupl}
end
end,
{NewTorV,NewAnyRenamed} = lists:mapfoldl(Fun,AnyRenamed,TorV),
%% have to flatten the NewTorV to remove any empty list elements
discover_dupl_in_mods(Name,Def,Ms,
[M#module{typeorval=lists:flatten(NewTorV)}|Acc],
NewAnyRenamed);
discover_dupl_in_mods(_,_,[],Acc,AnyRenamed) ->
{Acc,AnyRenamed}.
warn_renamed_def(ModName,NewName,OldName) ->
maybe_first_warn_print(),
io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has been renamed in generated module. New name is ~p.~n",[ModName,OldName,NewName]).
warn_deleted_def(ModName,DefName) ->
maybe_first_warn_print(),
io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has been deleted in generated module.~n",[ModName,DefName]).
warn_kept_def(ModName,DefName) ->
maybe_first_warn_print(),
io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has kept its name due to equal definition as duplicate.~n",[ModName,DefName]).
maybe_first_warn_print() ->
case get(warn_duplicate_defs) of
undefined ->
put(warn_duplicate_defs,true),
io:format("~nDue to multiple occurrences of a definition name in "
"multi-file compiled files:~n");
_ ->
ok
end.
finished_warn_prints() ->
put(warn_duplicate_defs,undefined).
exit_if_nameduplicate(#module{typeorval=TorV}) ->
exit_if_nameduplicate(TorV);
exit_if_nameduplicate([]) ->
ok;
exit_if_nameduplicate([Def|Rest]) ->
Name=get_name_of_def(Def),
exit_if_nameduplicate2(Name,Rest),
exit_if_nameduplicate(Rest).
exit_if_nameduplicate2(Name,Rest) ->
Pred=fun(Def)->
case get_name_of_def(Def) of
Name -> true;
_ -> false
end
end,
case lists:any(Pred,Rest) of
true ->
throw({error,{"more than one definition with same name",Name}});
_ ->
ok
end.
compare_defs(D1,D2) ->
compare_defs2(unset_pos_mod(D1),unset_pos_mod(D2)).
compare_defs2(D,D) ->
equal;
compare_defs2(_,_) ->
not_equal.
unset_pos_mod(Def) when is_record(Def,typedef) ->
Def#typedef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,classdef) ->
Def#classdef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,valuedef) ->
Def#valuedef{pos=undefined,module=undefined};
unset_pos_mod(Def) when is_record(Def,ptypedef) ->
Def#ptypedef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,pvaluedef) ->
Def#pvaluedef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,pvaluesetdef) ->
Def#pvaluesetdef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,pobjectdef) ->
Def#pobjectdef{pos=undefined};
unset_pos_mod(Def) when is_record(Def,pobjectsetdef) ->
Def#pobjectsetdef{pos=undefined};
unset_pos_mod(#'ComponentType'{} = Def) ->
Def#'ComponentType'{pos=undefined};
unset_pos_mod(Def) -> Def.
get_pos_of_def(#typedef{pos=Pos}) ->
Pos;
get_pos_of_def(#classdef{pos=Pos}) ->
Pos;
get_pos_of_def(#valuedef{pos=Pos}) ->
Pos;
get_pos_of_def(#ptypedef{pos=Pos}) ->
Pos;
get_pos_of_def(#pvaluedef{pos=Pos}) ->
Pos;
get_pos_of_def(#pvaluesetdef{pos=Pos}) ->
Pos;
get_pos_of_def(#pobjectdef{pos=Pos}) ->
Pos;
get_pos_of_def(#pobjectsetdef{pos=Pos}) ->
Pos;
get_pos_of_def(#'Externaltypereference'{pos=Pos}) ->
Pos;
get_pos_of_def(#'Externalvaluereference'{pos=Pos}) ->
Pos;
get_pos_of_def(_) ->
undefined.
get_name_of_def(#typedef{name=Name}) ->
Name;
get_name_of_def(#classdef{name=Name}) ->
Name;
get_name_of_def(#valuedef{name=Name}) ->
Name;
get_name_of_def(#ptypedef{name=Name}) ->
Name;
get_name_of_def(#pvaluedef{name=Name}) ->
Name;
get_name_of_def(#pvaluesetdef{name=Name}) ->
Name;
get_name_of_def(#pobjectdef{name=Name}) ->
Name;
get_name_of_def(#pobjectsetdef{name=Name}) ->
Name;
get_name_of_def(_) ->
undefined.
set_name_of_def(ModName,Name,OldDef) ->
NewName = list_to_atom(lists:concat([Name,ModName])),
case OldDef of
#typedef{} -> OldDef#typedef{name=NewName};
#classdef{} -> OldDef#classdef{name=NewName};
#valuedef{} -> OldDef#valuedef{name=NewName};
#ptypedef{} -> OldDef#ptypedef{name=NewName};
#pvaluedef{} -> OldDef#pvaluedef{name=NewName};
#pvaluesetdef{} -> OldDef#pvaluesetdef{name=NewName};
#pobjectdef{} -> OldDef#pobjectdef{name=NewName};
#pobjectsetdef{} -> OldDef#pobjectsetdef{name=NewName}
end.
save_imports(ModuleList)->
Fun = fun(M) ->
case M#module.imports of
{_,[]} -> [];
{_,I} ->
{M#module.name,I}
end
end,
ImportsList = lists:map(Fun,ModuleList),
case lists:flatten(ImportsList) of
[] ->
ok;
ImportsList2 ->
asn1ct_table:new(original_imports),
lists:foreach(fun(X) -> asn1ct_table:insert(original_imports, X) end,
ImportsList2)
end.
common_exports(ModuleList) ->
%% if all modules exports 'all' then export 'all',
%% otherwise export each typeorval name
case lists:filter(fun(X)->
element(2,X#module.exports) /= all
end,
ModuleList) of
[]->
{exports,all};
ModsWithExpList ->
CExports1 =
lists:append(lists:map(fun(X)->element(2,X#module.exports) end,
ModsWithExpList)),
CExports2 = export_all(lists:subtract(ModuleList,ModsWithExpList)),
{exports,CExports1++CExports2}
end.
export_all([])->[];
export_all(ModuleList) ->
ExpList =
lists:map(
fun(M)->
TorVL=M#module.typeorval,
MName = M#module.name,
lists:map(
fun(Def)->
case Def of
T when is_record(T,typedef)->
#'Externaltypereference'{pos=0,
module=MName,
type=T#typedef.name};
V when is_record(V,valuedef) ->
#'Externalvaluereference'{pos=0,
module=MName,
value=V#valuedef.name};
C when is_record(C,classdef) ->
#'Externaltypereference'{pos=0,
module=MName,
type=C#classdef.name};
P when is_record(P,ptypedef) ->
#'Externaltypereference'{pos=0,
module=MName,
type=P#ptypedef.name};
PV when is_record(PV,pvaluesetdef) ->
#'Externaltypereference'{pos=0,
module=MName,
type=PV#pvaluesetdef.name};
PO when is_record(PO,pobjectdef) ->
#'Externalvaluereference'{pos=0,
module=MName,
value=PO#pobjectdef.name}
end
end,
TorVL)
end,
ModuleList),
lists:append(ExpList).
%% common_imports/2
%% IList is a list of tuples, {Imports,MName}, where Imports is the imports of
%% the module with name MName.
%% InputMNameL holds the names of all merged modules.
%% Returns an import tuple with a list of imports that are external the merged
%% set of modules.
common_imports(IList,InputMNameL) ->
SetExternalImportsList = remove_in_set_imports(IList,InputMNameL,[]),
{imports,remove_import_doubles(SetExternalImportsList)}.
check_tagdefault(ModList) ->
case have_same_tagdefault(ModList) of
{true,TagDefault} -> TagDefault;
{false,TagDefault} ->
asn1ct_table:new(automatic_tags),
save_automatic_tagged_types(ModList),
TagDefault
end.
have_same_tagdefault([#module{tagdefault=T}|Ms]) ->
have_same_tagdefault(Ms,{true,T}).
have_same_tagdefault([],TagDefault) ->
TagDefault;
have_same_tagdefault([#module{tagdefault=T}|Ms],TDefault={_,T}) ->
have_same_tagdefault(Ms,TDefault);
have_same_tagdefault([#module{tagdefault=T1}|Ms],{_,T2}) ->
have_same_tagdefault(Ms,{false,rank_tagdef([T1,T2])}).
rank_tagdef(L) ->
case lists:member('EXPLICIT',L) of
true -> 'EXPLICIT';
_ -> 'IMPLICIT'
end.
save_automatic_tagged_types([])->
done;
save_automatic_tagged_types([#module{tagdefault='AUTOMATIC',
typeorval=TorV}|Ms]) ->
Fun =
fun(T) ->
asn1ct_table:insert(automatic_tags, {get_name_of_def(T)})
end,
lists:foreach(Fun,TorV),
save_automatic_tagged_types(Ms);
save_automatic_tagged_types([_M|Ms]) ->
save_automatic_tagged_types(Ms).
%% remove_in_set_imports/3 :
%% input: list with tuples of each module's imports and module name
%% respectively.
%% output: one list with same format but each occured import from a
%% module in the input set (IMNameL) is removed.
remove_in_set_imports([{{imports,ImpL},_ModName}|Rest],InputMNameL,Acc) ->
NewImpL = remove_in_set_imports1(ImpL,InputMNameL,[]),
remove_in_set_imports(Rest,InputMNameL,NewImpL++Acc);
remove_in_set_imports([],_,Acc) ->
lists:reverse(Acc).
remove_in_set_imports1([I|Is],InputMNameL,Acc) ->
case I#'SymbolsFromModule'.module of
#'Externaltypereference'{type=MName} ->
case lists:member(MName,InputMNameL) of
true ->
remove_in_set_imports1(Is,InputMNameL,Acc);
false ->
remove_in_set_imports1(Is,InputMNameL,[I|Acc])
end;
_ ->
remove_in_set_imports1(Is,InputMNameL,[I|Acc])
end;
remove_in_set_imports1([],_,Acc) ->
lists:reverse(Acc).
remove_import_doubles([]) ->
[];
%% If several modules in the merge set imports symbols from
%% the same external module it might be doubled.
%% ImportList has #'SymbolsFromModule' elements
remove_import_doubles(ImportList) ->
MergedImportList =
merge_symbols_from_module(ImportList,[]),
delete_double_of_symbol(MergedImportList,[]).
merge_symbols_from_module([Imp|Imps],Acc) ->
#'Externaltypereference'{type=ModName} = Imp#'SymbolsFromModule'.module,
IfromModName =
lists:filter(
fun(I)->
case I#'SymbolsFromModule'.module of
#'Externaltypereference'{type=ModName} ->
true;
#'Externalvaluereference'{value=ModName} ->
true;
_ -> false
end
end,
Imps),
NewImps = lists:subtract(Imps,IfromModName),
NewImp =
Imp#'SymbolsFromModule'{
symbols = lists:append(
lists:map(fun(SL)->
SL#'SymbolsFromModule'.symbols
end,[Imp|IfromModName]))},
merge_symbols_from_module(NewImps,[NewImp|Acc]);
merge_symbols_from_module([],Acc) ->
lists:reverse(Acc).
delete_double_of_symbol([I|Is],Acc) ->
SymL=I#'SymbolsFromModule'.symbols,
NewSymL = delete_double_of_symbol1(SymL,[]),
delete_double_of_symbol(Is,[I#'SymbolsFromModule'{symbols=NewSymL}|Acc]);
delete_double_of_symbol([],Acc) ->
Acc.
delete_double_of_symbol1([TRef=#'Externaltypereference'{type=TrefName}|Rest],Acc)->
NewRest =
lists:filter(fun(S)->
case S of
#'Externaltypereference'{type=TrefName}->
false;
_ -> true
end
end,
Rest),
delete_double_of_symbol1(NewRest,[TRef|Acc]);
delete_double_of_symbol1([VRef=#'Externalvaluereference'{value=VName}|Rest],Acc) ->
NewRest =
lists:filter(fun(S)->
case S of
#'Externalvaluereference'{value=VName}->
false;
_ -> true
end
end,
Rest),
delete_double_of_symbol1(NewRest,[VRef|Acc]);
delete_double_of_symbol1([TRef={#'Externaltypereference'{type=MRef},
#'Externaltypereference'{type=TRef}}|Rest],
Acc)->
NewRest =
lists:filter(
fun(S)->
case S of
{#'Externaltypereference'{type=MRef},
#'Externaltypereference'{type=TRef}}->
false;
_ -> true
end
end,
Rest),
delete_double_of_symbol1(NewRest,[TRef|Acc]);
delete_double_of_symbol1([],Acc) ->
Acc.
%%***********************************
generate({M,CodeTuple}, OutFile, EncodingRule, Options) ->
{Types,Values,Ptypes,Classes,Objects,ObjectSets} = CodeTuple,
Code = #abst{name=M#module.name,
types=Types,values=Values,ptypes=Ptypes,
classes=Classes,objects=Objects,objsets=ObjectSets},
setup_bit_string_format(Options),
setup_legacy_erlang_types(Options),
asn1ct_table:new(check_functions),
Gen = init_gen_record(EncodingRule, Options),
check_maps_option(Gen),
%% create decoding function names and taglists for partial decode
try
specialized_decode_prepare(Gen, M)
catch
throw:{error, Reason} ->
warning("Error in configuration file: ~n~p~n",
[Reason], Options,
"Error in configuration file")
end,
asn1ct_gen:pgen(OutFile, Gen, Code),
cleanup_bit_string_format(),
erase(tlv_format), % used in ber
erase(class_default_type),% used in ber
asn1ct_table:delete(check_functions),
ok.
init_gen_record(EncodingRule, Options) ->
Erule = case EncodingRule of
uper -> per;
_ -> EncodingRule
end,
Der = proplists:get_bool(der, Options),
Aligned = EncodingRule =:= per,
RecPrefix = proplists:get_value(record_name_prefix, Options, ""),
MacroPrefix = proplists:get_value(macro_name_prefix, Options, ""),
Pack = case proplists:get_value(maps, Options, false) of
true -> map;
false -> record
end,
#gen{erule=Erule,der=Der,aligned=Aligned,
rec_prefix=RecPrefix,macro_prefix=MacroPrefix,
pack=Pack,options=Options}.
setup_legacy_erlang_types(Opts) ->
F = case lists:member(legacy_erlang_types, Opts) of
false ->
case get_bit_string_format() of
bitstring ->
false;
compact ->
legacy_forced_info(compact_bit_string),
true;
legacy ->
legacy_forced_info(legacy_bit_string),
true
end;
true ->
true
end,
put(use_legacy_erlang_types, F).
legacy_forced_info(Opt) ->
io:format("Info: The option 'legacy_erlang_types' "
"is implied by the '~s' option.\n", [Opt]).
use_legacy_types() ->
get(use_legacy_erlang_types).
setup_bit_string_format(Opts) ->
Format = case {lists:member(compact_bit_string, Opts),
lists:member(legacy_bit_string, Opts)} of
{false,false} -> bitstring;
{true,false} -> compact;
{false,true} -> legacy;
{true,true} ->
Message = "Contradicting options given: "
"compact_bit_string and legacy_bit_string",
exit({error,{asn1,Message}})
end,
put(bit_string_format, Format).
cleanup_bit_string_format() ->
erase(bit_string_format).
get_bit_string_format() ->
get(bit_string_format).
check_maps_option(#gen{pack=map}) ->
case get_bit_string_format() of
bitstring ->
ok;
_ ->
Message1 = "The 'maps' option must not be combined with "
"'compact_bit_string' or 'legacy_bit_string'",
exit({error,{asn1,Message1}})
end,
case use_legacy_types() of
false ->
ok;
true ->
Message2 = "The 'maps' option must not be combined with "
"'legacy_erlang_types'",
exit({error,{asn1,Message2}})
end;
check_maps_option(#gen{}) ->
ok.
%% parse_and_save parses an asn1 spec and saves the unchecked parse
%% tree in a data base file.
%% Does not support multifile compilation files
parse_and_save(Module,S) ->
Options = S#state.options,
SourceDir = S#state.sourcedir,
Includes = [I || {i,I} <- Options],
Erule = S#state.erule,
Maps = lists:member(maps, Options),
case get_input_file(Module, [SourceDir|Includes]) of
%% search for asn1 source
{file,SuffixedASN1source} ->
Mtime = filelib:last_modified(SuffixedASN1source),
case asn1_db:dbload(Module, Erule, Maps, Mtime) of
ok -> ok;
error -> parse_and_save1(S, SuffixedASN1source, Options)
end;
Err when not Maps ->
case asn1_db:dbload(Module) of
ok ->
%% FIXME: This should be an error.
warning("could not do a consistency check of the ~p file: no asn1 source file was found.~n",
[lists:concat([Module,".asn1db"])],Options);
error ->
ok
end,
{error,{asn1,input_file_error,Err}};
Err ->
%% Always fail directly when the 'maps' option is used.
{error,{asn1,input_file_error,Err}}
end.
parse_and_save1(#state{erule=Erule}, File, Options) ->
Ext = filename:extension(File),
Base = filename:basename(File, Ext),
DbFile = outfile(Base, "asn1db", Options),
St = #st{file=File,dbfile=DbFile,erule=Erule},
Passes = parse_and_save_passes(),
run_passes(Passes, St).
get_input_file(Module,[]) ->
Module;
get_input_file(Module,[I|Includes]) ->
case (catch input_file_type(filename:join([I,Module]))) of
{single_file,FileName} ->
{file,FileName};
_ ->
get_input_file(Module,Includes)
end.
input_file_type(Name,I) ->
case input_file_type(Name) of
{error,_} -> input_file_type2(filename:basename(Name),I);
Err={input_file_error,_} -> Err;
Res -> Res
end.
input_file_type2(Name,[I|Is]) ->
case input_file_type(filename:join([I,Name])) of
{error,_} -> input_file_type2(Name,Is);
Err={input_file_error,_} -> Err;
Res -> Res
end;
input_file_type2(Name,[]) ->
input_file_type(Name).
input_file_type([]) ->
{empty_name,[]};
input_file_type(File) ->
case filename:extension(File) of
[] ->
case file:read_file_info(lists:concat([File,".asn1"])) of
{ok,_FileInfo} ->
{single_file, lists:concat([File,".asn1"])};
_Error ->
case file:read_file_info(lists:concat([File,".asn"])) of
{ok,_FileInfo} ->
{single_file, lists:concat([File,".asn"])};
_Error ->
case file:read_file_info(lists:concat([File,".py"])) of
{ok,_FileInfo} ->
{single_file, lists:concat([File,".py"])};
Error ->
Error
end
end
end;
".asn1config" ->
case read_config_file_info(File, asn1_module) of
{ok,Asn1Module} ->
input_file_type(Asn1Module);
Error ->
Error
end;
Asn1SFix ->
Base = filename:basename(File,Asn1SFix),
Ret =
case filename:extension(Base) of
[] ->
{single_file,File};
SetSFix when (SetSFix == ".set") ->
{multiple_files_file,
list_to_atom(filename:basename(Base,SetSFix)),
File};
_Error ->
throw({input_file_error,{'Bad input file',File}})
end,
%% check that the file exists
case file:read_file_info(File) of
{ok,_} -> Ret;
Err -> Err
end
end.
get_file_list(File,Includes) ->
case file:open(File,[read]) of
{error,Reason} ->
{error,{File,file:format_error(Reason)}};
{ok,Stream} ->
get_file_list1(Stream,filename:dirname(File),Includes,[])
end.
get_file_list1(Stream,Dir,Includes,Acc) ->
Ret = io:get_line(Stream,''),
case Ret of
eof ->
ok = file:close(Stream),
lists:reverse(Acc);
FileName ->
SuffixedNameList =
case (catch input_file_type(filename:join([Dir,lists:delete($\n,FileName)]),Includes)) of
{empty_name,[]} -> [];
{single_file,Name} -> [Name];
{multiple_files_file,_,Name} ->
get_file_list(Name,Includes);
_Err ->
[]
end,
get_file_list1(Stream,Dir,Includes,SuffixedNameList++Acc)
end.
get_rule(Options) ->
case [Rule || Rule <- [ber,per,uper],
Opt <- Options,
Rule =:= Opt] of
[Rule] ->
Rule;
[Rule|_] ->
Rule;
[] ->
ber
end.
%% translate_options(NewOptions) -> OldOptions
%% Translate the new option names to the old option name.
translate_options([ber_bin|T]) ->
io:format("Warning: The option 'ber_bin' is now called 'ber'.\n"),
[ber|translate_options(T)];
translate_options([per_bin|T]) ->
io:format("Warning: The option 'per_bin' is now called 'per'.\n"),
[per|translate_options(T)];
translate_options([uper_bin|T]) ->
io:format("Warning: The option 'uper_bin' is now called 'uper'.\n"),
translate_options([uper|T]);
translate_options([nif|T]) ->
io:format("Warning: The option 'nif' is no longer needed.\n"),
translate_options(T);
translate_options([optimize|T]) ->
io:format("Warning: The option 'optimize' is no longer needed.\n"),
translate_options(T);
translate_options([inline|T]) ->
io:format("Warning: The option 'inline' is no longer needed.\n"),
translate_options(T);
translate_options([{inline,_}|_]) ->
io:format("ERROR: The option {inline,OutputFilename} is no longer supported.\n"),
throw({error,{unsupported_option,inline}});
translate_options([H|T]) ->
[H|translate_options(T)];
translate_options([]) -> [].
remove_asn_flags(Options) ->
[X || X <- Options, not is_asn1_flag(X)].
is_asn1_flag(asn1config) -> true;
is_asn1_flag(ber) -> true;
is_asn1_flag(compact_bit_string) -> true;
is_asn1_flag(debug) -> true;
is_asn1_flag(der) -> true;
is_asn1_flag(legacy_bit_string) -> true;
is_asn1_flag({macro_name_prefix,_}) -> true;
is_asn1_flag({n2n,_}) -> true;
is_asn1_flag(noobj) -> true;
is_asn1_flag(no_ok_wrapper) -> true;
is_asn1_flag(optimize) -> true;
is_asn1_flag(per) -> true;
is_asn1_flag({record_name_prefix,_}) -> true;
is_asn1_flag(undec_rec) -> true;
is_asn1_flag(uper) -> true;
is_asn1_flag(verbose) -> true;
%% 'warnings_as_errors' is intentionally passed through to the compiler.
is_asn1_flag(_) -> false.
outfile(Base, Ext, Opts) ->
Obase = case lists:keysearch(outdir, 1, Opts) of
{value, {outdir, Odir}} -> filename:join(Odir, Base);
_NotFound -> Base % Not found or bad format
end,
case Ext of
[] ->
Obase;
_ ->
lists:concat([Obase,".",Ext])
end.
includes(File,Options) ->
Options2 = include_append(".", Options),
Options3 = include_append(filename:dirname(File), Options2),
case proplists:get_value(outdir, Options) of
undefined -> Options3;
OutDir -> include_prepend(OutDir, Options3)
end.
include_append(Dir, Options) ->
option_add({i, Dir}, Options, fun(Opts) -> Opts ++ [{i, Dir}] end).
include_prepend(Dir, Options) ->
option_add({i, Dir}, Options, fun(Opts) -> [{i, Dir}|Opts] end).
option_add(Option, Options, Fun) ->
case lists:member(Option, Options) of
true -> Options;
false -> Fun(Options)
end.
strip_includes(Includes) ->
[I || {i, I} <- Includes].
%% compile(AbsFileName, Options)
%% Compile entry point for erl_compile.
compile_asn(File,OutFile,Options) ->
compile(lists:concat([File,".asn"]),OutFile,Options).
compile_asn1(File,OutFile,Options) ->
compile(lists:concat([File,".asn1"]),OutFile,Options).
compile_py(File,OutFile,Options) ->
compile(lists:concat([File,".py"]),OutFile,Options).
compile(File, _OutFile, Options) ->
case compile(File, make_erl_options(Options)) of
{error,_Reason} ->
error;
ok ->
ok;
ParseRes when is_tuple(ParseRes) ->
io:format("~p~n",[ParseRes]),
ok;
ScanRes when is_list(ScanRes) ->
io:format("~p~n",[ScanRes]),
ok
end.
%% Converts generic compiler options to specific options.
make_erl_options(Opts) ->
%% This way of extracting will work even if the record passed
%% has more fields than known during compilation.
Includes = Opts#options.includes,
Defines = Opts#options.defines,
Outdir = Opts#options.outdir,
Warning = Opts#options.warning,
Verbose = Opts#options.verbose,
Specific = Opts#options.specific,
Optimize = Opts#options.optimize,
OutputType = Opts#options.output_type,
Cwd = Opts#options.cwd,
Options =
case Verbose of
true -> [verbose];
false -> []
end ++
case Warning of
0 -> [];
_ -> [warnings]
end ++
[] ++
case Optimize of
1 -> [optimize];
999 -> [];
_ -> [{optimize,Optimize}]
end ++
lists:map(
fun ({Name, Value}) ->
{d, Name, Value};
(Name) ->
{d, Name}
end,
Defines) ++
case OutputType of
undefined -> [ber]; % temporary default (ber when it's ready)
_ -> [OutputType] % pass through
end,
Options++[errors, {cwd, Cwd}, {outdir, Outdir}|
lists:map(fun(Dir) -> {i, Dir} end, Includes)]++Specific.
pretty2(Module,AbsFile) ->
{ok,F} = file:open(AbsFile,[write]),
M = asn1_db:dbget(Module,'MODULE'),
io:format(F,"%%%%%%%%%%%%%%%%%%% ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
io:format(F,"~s.\n",[asn1ct_pretty_format:term(M#module.defid)]),
io:format(F,"~s.\n",[asn1ct_pretty_format:term(M#module.tagdefault)]),
io:format(F,"~s.\n",[asn1ct_pretty_format:term(M#module.exports)]),
io:format(F,"~s.\n",[asn1ct_pretty_format:term(M#module.imports)]),
io:format(F,"~s.\n\n",[asn1ct_pretty_format:term(M#module.extensiondefault)]),
{Types,Values,ParameterizedTypes,Classes,Objects,ObjectSets} = M#module.typeorval,
io:format(F,"%%%%%%%%%%%%%%%%%%% TYPES in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,Types),
io:format(F,"%%%%%%%%%%%%%%%%%%% VALUES in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,Values),
io:format(F,"%%%%%%%%%%%%%%%%%%% Parameterized Types in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,ParameterizedTypes),
io:format(F,"%%%%%%%%%%%%%%%%%%% Classes in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,Classes),
io:format(F,"%%%%%%%%%%%%%%%%%%% Objects in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,Objects),
io:format(F,"%%%%%%%%%%%%%%%%%%% Object Sets in ~p %%%%%%%%%%%%%%%%%%%~n",[Module]),
lists:foreach(fun(T)-> io:format(F,"~s.\n",
[asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
end,ObjectSets).
start(Includes) when is_list(Includes) ->
asn1_db:dbstart(Includes).
test(Module) -> test_module(Module, []).
test(Module, [] = Options) -> test_module(Module, Options);
test(Module, [{i, _}|_] = Options) -> test_module(Module, Options);
test(Module, Type) -> test_type(Module, Type, []).
test(Module, Type, [] = Options) -> test_type(Module, Type, Options);
test(Module, Type, [{i, _}|_] = Options) -> test_type(Module, Type, Options);
test(Module, Type, Value) -> test_value(Module, Type, Value).
test_module(Module, Includes) ->
in_process(fun() ->
start(strip_includes(Includes)),
case check(Module, Includes) of
{ok, NewTypes} -> test_each(Module, NewTypes);
Error -> Error
end
end).
test_each(Module, [Type|Rest]) ->
case test_type(Module, Type) of
{ok, _Result} -> test_each(Module, Rest);
Error -> Error
end;
test_each(_,[]) ->
ok.
test_type(Module, Type, Includes) ->
in_process(fun() ->
start(strip_includes(Includes)),
case check(Module, Includes) of
{ok, _NewTypes} -> test_type(Module, Type);
Error -> Error
end
end).
test_type(Module, Type) ->
case get_value(Module, Type) of
{ok, Val} -> test_value(Module, Type, Val);
{error, Reason} -> {error, {asn1, {value, Reason}}}
end.
test_value(Module, Type, Value) ->
in_process(fun() ->
case catch Module:encode(Type, Value) of
{ok, Bytes} ->
test_value_decode(Module, Type, Value, Bytes);
Bytes when is_binary(Bytes) ->
test_value_decode(Module, Type, Value, Bytes);
Error ->
{error, {asn1,
{encode, {{Module, Type, Value}, Error}}}}
end
end).
test_value_decode(Module, Type, Value, Bytes) ->
NewBytes = prepare_bytes(Bytes),
case Module:decode(Type, NewBytes) of
{ok,Value} -> {ok, {Module,Type,Value}};
{ok,Value,<<>>} -> {ok, {Module,Type,Value}};
Value -> {ok, {Module,Type,Value}};
{Value,<<>>} -> {ok, {Module,Type,Value}};
%% Errors:
{ok, Res} ->
{error, {asn1,
{encode_decode_mismatch,
{{Module, Type, Value}, Res}}}};
{ok, Res, Rest} ->
{error, {asn1,
{encode_decode_mismatch,
{{Module, Type, Value}, {Res,Rest}}}}};
Error ->
{error, {asn1,
{{decode,
{Module, Type, Value}, Error}}}}
end.
value(Module, Type) -> value(Module, Type, []).
value(Module, Type, Includes) ->
in_process(fun() ->
start(strip_includes(Includes)),
case check(Module, Includes) of
{ok, _NewTypes} -> get_value(Module, Type);
Error -> Error
end
end).
get_value(Module, Type) ->
case asn1ct_value:from_type(Module, Type) of
{error, Reason} -> {error, Reason};
Result -> {ok, Result}
end.
check(Module, Includes) ->
case asn1_db:dbload(Module) of
error ->
{error,asn1db_missing_or_out_of_date};
ok ->
M = asn1_db:dbget(Module, 'MODULE'),
TypeOrVal = M#module.typeorval,
State = #state{mname = M#module.name,
module = M#module{typeorval=[]},
options = Includes},
case asn1ct_check:check(State, TypeOrVal) of
{ok, {NewTypes, _, _, _, _, _}, _} -> {ok, NewTypes};
{error, Reason} -> {error, Reason}
end
end.
prepare_bytes(Bytes) when is_binary(Bytes) -> Bytes;
prepare_bytes(Bytes) -> list_to_binary(Bytes).
vsn() ->
?vsn.
specialized_decode_prepare(#gen{erule=ber,options=Options}=Gen, M) ->
case lists:member(asn1config, Options) of
true ->
special_decode_prepare_1(Gen, M);
false ->
ok
end;
specialized_decode_prepare(_, _) ->
ok.
%% Reads the configuration file if it exists and stores information
%% about partial decode and incomplete decode
special_decode_prepare_1(#gen{options=Options}=Gen, M) ->
%% read configure file
ModName = case lists:keyfind(asn1config, 1, Options) of
{_,MName} -> MName;
false -> M#module.name
end,
%% io:format("ModName: ~p~nM#module.name: ~p~n~n",[ModName,M#module.name]),
case read_config_file(Gen, ModName) of
no_config_file ->
ok;
CfgList ->
SelectedDecode = get_config_info(CfgList,selective_decode),
ExclusiveDecode = get_config_info(CfgList,exclusive_decode),
CommandList = create_partial_decode_gen_info(M#module.name,
SelectedDecode),
%% To convert CommandList to a proper list for the driver change
%% the list:[[choosen,Tag1],skip,[skip_optional,Tag2]] to L =
%% [5,2,Tag1,0,1,Tag2] where 5 is the length, and call
%% port_control(asn1_driver_port,3,[L| Bin])
save_config(partial_decode,CommandList),
save_gen_state(selective_decode,SelectedDecode),
CommandList2 = create_partial_inc_decode_gen_info(M#module.name,
ExclusiveDecode),
Part_inc_tlv_tags = tlv_tags(CommandList2),
save_config(partial_incomplete_decode,Part_inc_tlv_tags),
save_gen_state(exclusive_decode,ExclusiveDecode,Part_inc_tlv_tags)
end.
%% create_partial_inc_decode_gen_info/2
%%
%% Creats a list of tags out of the information in TypeNameList that
%% tells which value will be incomplete decoded, i.e. each end
%% component/type in TypeNameList. The significant types/components in
%% the path from the toptype must be specified in the
%% TypeNameList. Significant elements are all constructed types that
%% branches the path to the leaf and the leaf it selfs.
%%
%% Returns a list of elements, where an element may be one of
%% mandatory|[opt,Tag]|[bin,Tag]. mandatory correspond to a mandatory
%% element that shall be decoded as usual. [opt,Tag] matches an
%% OPTIONAL or DEFAULT element that shall be decoded as
%% usual. [bin,Tag] corresponds to an element, mandatory, OPTIONAL or
%% DEFAULT, that shall be left encoded (incomplete decoded).
create_partial_inc_decode_gen_info(ModName,{Mod,[{Name,L}|Ls]}) when is_list(L) ->
TopTypeName = partial_inc_dec_toptype(L),
[{Name,TopTypeName,
create_partial_inc_decode_gen_info1(ModName,TopTypeName,{Mod,L})}|
create_partial_inc_decode_gen_info(ModName,{Mod,Ls})];
create_partial_inc_decode_gen_info(_,{_,[]}) ->
[];
create_partial_inc_decode_gen_info(_,[]) ->
[].
create_partial_inc_decode_gen_info1(ModName,TopTypeName,{ModName,
[_TopType|Rest]}) ->
case asn1_db:dbget(ModName,TopTypeName) of
#typedef{typespec=TS} ->
TagCommand = get_tag_command(TS,?MANDATORY,mandatory),
create_pdec_inc_command(ModName,get_components(TS#type.def),
Rest,[TagCommand]);
_ ->
throw({error,{"wrong type list in asn1 config file",
TopTypeName}})
end;
create_partial_inc_decode_gen_info1(M1,_,{M2,_}) when M1 /= M2 ->
throw({error,{"wrong module name in asn1 config file",
M2}});
create_partial_inc_decode_gen_info1(_,_,TNL) ->
throw({error,{"wrong type list in asn1 config file",
TNL}}).
%%
%% Only when there is a 'ComponentType' the config data C1 may be a
%% list, where the incomplete decode is branched. So, C1 may be a
%% list, a "binary tuple", a "parts tuple" or an atom. The second
%% element of a binary tuple and a parts tuple is an atom.
create_pdec_inc_command(_ModName,_,[],Acc) ->
lists:reverse(Acc);
create_pdec_inc_command(ModName,{Comps1,Comps2},TNL,Acc)
when is_list(Comps1),is_list(Comps2) ->
create_pdec_inc_command(ModName,Comps1 ++ Comps2,TNL,Acc);
%% The following two clauses match on the type after the top
%% type. This one if the top type had no tag, i.e. a CHOICE.
create_pdec_inc_command(ModN,Clist,[CL|_Rest],[[]]) when is_list(CL) ->
create_pdec_inc_command(ModN,Clist,CL,[]);
create_pdec_inc_command(ModN,Clist,[CL|_Rest],Acc) when is_list(CL) ->
InnerDirectives=create_pdec_inc_command(ModN,Clist,CL,[]),
lists:reverse([InnerDirectives|Acc]);
create_pdec_inc_command(ModName,
CList=[#'ComponentType'{name=Name,typespec=TS,
prop=Prop}|Comps],
TNL=[C1|Cs],Acc) ->
case C1 of
{Name,undecoded} ->
TagCommand = get_tag_command(TS,?UNDECODED,Prop),
create_pdec_inc_command(ModName,Comps,Cs,concat_sequential(TagCommand,Acc));
{Name,parts} ->
TagCommand = get_tag_command(TS,?PARTS,Prop),
create_pdec_inc_command(ModName,Comps,Cs,concat_sequential(TagCommand,Acc));
L when is_list(L) ->
%% I guess this never happens due to previous clause.
%% This case is only possible as the first element after
%% the top type element, when top type is SEGUENCE or SET.
%% Follow each element in L. Must note every tag on the
%% way until the last command is reached, but it ought to
%% be enough to have a "complete" or "complete optional"
%% command for each component that is not specified in the
%% config file. Then in the TLV decode the components with
%% a "complete" command will be decoded by an ordinary TLV
%% decode.
create_pdec_inc_command(ModName,CList,L,Acc);
{Name,RestPartsList} when is_list(RestPartsList) ->
%% Same as previous, but this may occur at any place in
%% the structure. The previous is only possible as the
%% second element.
case get_tag_command(TS,?MANDATORY,Prop) of
?MANDATORY ->
InnerDirectives=
create_pdec_inc_command(ModName,TS#type.def,
RestPartsList,[]),
create_pdec_inc_command(ModName,Comps,Cs,
[[?MANDATORY,InnerDirectives]|Acc]);
[Opt,EncTag] ->
InnerDirectives =
create_pdec_inc_command(ModName,TS#type.def,
RestPartsList,[]),
create_pdec_inc_command(ModName,Comps,Cs,
[[Opt,EncTag,InnerDirectives]|Acc])
end;
_ ->
%% this component may not be in the config list
TagCommand = get_tag_command(TS,?MANDATORY,Prop),
create_pdec_inc_command(ModName,Comps,TNL,concat_sequential(TagCommand,Acc))
end;
create_pdec_inc_command(ModName,
{'CHOICE',[#'ComponentType'{name=C1,
typespec=TS,
prop=Prop}|Comps]},
[{C1,Directive}|Rest],Acc) ->
case Directive of
List when is_list(List) ->
TagCommand = get_tag_command(TS,?ALTERNATIVE,Prop),
CompAcc =
create_pdec_inc_command(ModName,
get_components(TS#type.def),List,[]),
NewAcc = case TagCommand of
[Command,Tag] when is_atom(Command) ->
[[Command,Tag,CompAcc]|Acc];
[L1,_L2|Rest] when is_list(L1) ->
case lists:reverse(TagCommand) of
[Atom|Comms] when is_atom(Atom) ->
[concat_sequential(lists:reverse(Comms),
[Atom,CompAcc])|Acc];
[[Command2,Tag2]|Comms] ->
[concat_sequential(lists:reverse(Comms),
[[Command2,Tag2,CompAcc]])|Acc]
end
end,
create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
NewAcc);
undecoded ->
TagCommand = get_tag_command(TS,?ALTERNATIVE_UNDECODED,Prop),
create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
concat_sequential(TagCommand,Acc));
parts ->
TagCommand = get_tag_command(TS,?ALTERNATIVE_PARTS,Prop),
create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
concat_sequential(TagCommand,Acc))
end;
create_pdec_inc_command(ModName,
{'CHOICE',[#'ComponentType'{typespec=TS,
prop=Prop}|Comps]},
TNL,Acc) ->
TagCommand = get_tag_command(TS,?ALTERNATIVE,Prop),
create_pdec_inc_command(ModName,{'CHOICE',Comps},TNL,
concat_sequential(TagCommand,Acc));
create_pdec_inc_command(M,{'CHOICE',{Cs1,Cs2}},TNL,Acc)
when is_list(Cs1),is_list(Cs2) ->
create_pdec_inc_command(M,{'CHOICE',Cs1 ++ Cs2},TNL,Acc);
create_pdec_inc_command(ModName,#'Externaltypereference'{module=M,type=Name},
TNL,Acc) ->
#type{def=Def} = get_referenced_type(M,Name),
create_pdec_inc_command(ModName,get_components(Def),TNL,Acc);
create_pdec_inc_command(_,_,TNL,_) ->
throw({error,{"unexpected error when creating partial "
"decode command",TNL}}).
partial_inc_dec_toptype([T|_]) when is_atom(T) ->
T;
partial_inc_dec_toptype([{T,_}|_]) when is_atom(T) ->
T;
partial_inc_dec_toptype([L|_]) when is_list(L) ->
partial_inc_dec_toptype(L);
partial_inc_dec_toptype(_) ->
throw({error,{"no top type found for partial incomplete decode"}}).
%% Creats a list of tags out of the information in TypeList and Types
%% that tells which value will be decoded. Each constructed type that
%% is in the TypeList will get a "choosen" command. Only the last
%% type/component in the TypeList may be a primitive type. Components
%% "on the way" to the final element may get the "skip" or the
%% "skip_optional" command.
%% CommandList = [Elements]
%% Elements = {choosen,Tag}|{skip_optional,Tag}|skip
%% Tag is a binary with the tag BER encoded.
create_partial_decode_gen_info(ModName,{ModName,TypeLists}) ->
[create_partial_decode_gen_info1(ModName,TL) || TL <- TypeLists];
create_partial_decode_gen_info(_,[]) ->
[];
create_partial_decode_gen_info(_M1,{M2,_}) ->
throw({error,{"wrong module name in asn1 config file",
M2}}).
create_partial_decode_gen_info1(ModName,{FuncName,TypeList}) ->
case TypeList of
[TopType|Rest] ->
case asn1_db:dbget(ModName,TopType) of
#typedef{typespec=TS} ->
TagCommand = get_tag_command(TS,?CHOOSEN),
Ret=create_pdec_command(ModName,
get_components(TS#type.def),
Rest,concat_tags(TagCommand,[])),
{FuncName,Ret};
_ ->
throw({error,{"wrong type list in asn1 config file",
TypeList}})
end;
_ ->
[]
end;
create_partial_decode_gen_info1(_,_) ->
ok.
%% create_pdec_command/4 for each name (type or component) in the
%% third argument, TypeNameList, a command is created. The command has
%% information whether the component/type shall be skipped, looked
%% into or returned. The list of commands is returned.
create_pdec_command(_ModName,_,[],Acc) ->
Remove_empty_lists =
fun([[]|L],Res,Fun) ->
Fun(L,Res,Fun);
([],Res,_) ->
Res;
([H|L],Res,Fun) ->
Fun(L,[H|Res],Fun)
end,
Remove_empty_lists(Acc,[],Remove_empty_lists);
create_pdec_command(ModName,[#'ComponentType'{name=C1,typespec=TS}|_Comps],
[C1|Cs],Acc) ->
%% this component is a constructed type or the last in the
%% TypeNameList otherwise the config spec is wrong
TagCommand = get_tag_command(TS,?CHOOSEN),
create_pdec_command(ModName,get_components(TS#type.def),
Cs,concat_tags(TagCommand,Acc));
create_pdec_command(ModName,[#'ComponentType'{typespec=TS,
prop=Prop}|Comps],
[C2|Cs],Acc) ->
TagCommand =
case Prop of
mandatory ->
get_tag_command(TS,?SKIP);
_ ->
get_tag_command(TS,?SKIP_OPTIONAL)
end,
create_pdec_command(ModName,Comps,[C2|Cs],concat_tags(TagCommand,Acc));
create_pdec_command(ModName,{'CHOICE',[Comp=#'ComponentType'{name=C1}|_]},TNL=[C1|_Cs],Acc) ->
create_pdec_command(ModName,[Comp],TNL,Acc);
create_pdec_command(ModName,{'CHOICE',[#'ComponentType'{}|Comps]},TNL,Acc) ->
create_pdec_command(ModName,{'CHOICE',Comps},TNL,Acc);
create_pdec_command(ModName,#'Externaltypereference'{module=M,type=C1},
TypeNameList,Acc) ->
#type{def=Def} = get_referenced_type(M,C1),
create_pdec_command(ModName,get_components(Def),TypeNameList,
Acc);
create_pdec_command(ModName,TS=#type{def=Def},[C1|Cs],Acc) ->
%% This case when we got the "components" of a SEQUENCE/SET OF
case C1 of
[1] ->
%% A list with an integer is the only valid option in a 'S
%% OF', the other valid option would be an empty
%% TypeNameList saying that the entire 'S OF' will be
%% decoded.
TagCommand = get_tag_command(TS,?CHOOSEN),
create_pdec_command(ModName,Def,Cs,concat_tags(TagCommand,Acc));
[N] when is_integer(N) ->
TagCommand = get_tag_command(TS,?SKIP),
create_pdec_command(ModName,Def,[[N-1]|Cs],
concat_tags(TagCommand,Acc));
Err ->
throw({error,{"unexpected error when creating partial "
"decode command",Err}})
end;
create_pdec_command(_,_,TNL,_) ->
throw({error,{"unexpected error when creating partial "
"decode command",TNL}}).
get_components(#'SEQUENCE'{components={C1,C2}}) when is_list(C1),is_list(C2) ->
C1++C2;
get_components(#'SEQUENCE'{components=Components}) ->
Components;
get_components(#'SET'{components={C1,C2}}) when is_list(C1),is_list(C2) ->
C1++C2;
get_components(#'SET'{components=Components}) ->
Components;
get_components({'SEQUENCE OF',Components}) ->
Components;
get_components({'SET OF',Components}) ->
Components;
get_components(Def) ->
Def.
concat_sequential(L=[A,B],Acc) when is_atom(A),is_binary(B) ->
[L|Acc];
concat_sequential(L,Acc) when is_list(L) ->
concat_sequential1(lists:reverse(L),Acc);
concat_sequential(A,Acc) ->
[A|Acc].
concat_sequential1([],Acc) ->
Acc;
concat_sequential1([[]],Acc) ->
Acc;
concat_sequential1([El|RestEl],Acc) when is_list(El) ->
concat_sequential1(RestEl,[El|Acc]);
concat_sequential1([mandatory|RestEl],Acc) ->
concat_sequential1(RestEl,[mandatory|Acc]);
concat_sequential1(L,Acc) ->
[L|Acc].
many_tags([?SKIP])->
false;
many_tags([?SKIP_OPTIONAL,_]) ->
false;
many_tags([?CHOOSEN,_]) ->
false;
many_tags(_) ->
true.
concat_tags(Ts,Acc) ->
case many_tags(Ts) of
true when is_list(Ts) ->
lists:reverse(Ts)++Acc;
true ->
[Ts|Acc];
false ->
[Ts|Acc]
end.
%% get_tag_command(Type,Command)
%% Type is the type that has information about the tag Command tells
%% what to do with the encoded value with the tag of Type when
%% decoding.
get_tag_command(#type{tag=[]},_) ->
[];
%% SKIP and SKIP_OPTIONAL shall return only one tag command regardless
get_tag_command(#type{},?SKIP) ->
?SKIP;
get_tag_command(#type{tag=Tags},?SKIP_OPTIONAL) ->
Tag=hd(Tags),
[?SKIP_OPTIONAL,encode_tag_val(decode_class(Tag#tag.class),
Tag#tag.form,Tag#tag.number)];
get_tag_command(#type{tag=[Tag]},Command) ->
%% encode the tag according to BER
[Command,encode_tag_val(decode_class(Tag#tag.class),Tag#tag.form,
Tag#tag.number)];
get_tag_command(T=#type{tag=[Tag|Tags]},Command) ->
TC = get_tag_command(T#type{tag=[Tag]},Command),
TCs = get_tag_command(T#type{tag=Tags},Command),
case many_tags(TCs) of
true when is_list(TCs) ->
[TC|TCs];
_ -> [TC|[TCs]]
end.
%% get_tag_command/3 used by create_pdec_inc_command
get_tag_command(#type{tag=[]},_,_) ->
[];
get_tag_command(#type{tag=[Tag]},?MANDATORY,Prop) ->
case Prop of
mandatory ->
?MANDATORY;
{'DEFAULT',_} ->
[?DEFAULT,encode_tag_val(decode_class(Tag#tag.class),
Tag#tag.form,Tag#tag.number)];
_ -> [?OPTIONAL,encode_tag_val(decode_class(Tag#tag.class),
Tag#tag.form,Tag#tag.number)]
end;
get_tag_command(#type{tag=[Tag]},Command,Prop) ->
[anonymous_dec_command(Command,Prop),encode_tag_val(decode_class(Tag#tag.class),Tag#tag.form, Tag#tag.number)];
get_tag_command(#type{tag=Tag},Command,Prop) when is_record(Tag,tag) ->
get_tag_command(#type{tag=[Tag]},Command,Prop);
get_tag_command(T=#type{tag=[Tag|Tags]},Command,Prop) ->
[get_tag_command(T#type{tag=[Tag]},Command,Prop)|[
get_tag_command(T#type{tag=Tags},Command,Prop)]].
anonymous_dec_command(?UNDECODED,'OPTIONAL') ->
?OPTIONAL_UNDECODED;
anonymous_dec_command(Command,_) ->
Command.
get_referenced_type(M,Name) ->
case asn1_db:dbget(M,Name) of
#typedef{typespec=TS} ->
case TS of
#type{def=#'Externaltypereference'{module=M2,type=Name2}} ->
%% The tags have already been taken care of in the
%% first reference where they were gathered in a
%% list of tags.
get_referenced_type(M2,Name2);
#type{} -> TS;
_ ->
throw({error,{"unexpected element when"
" fetching referenced type",TS}})
end;
T ->
throw({error,{"unexpected element when fetching "
"referenced type",T}})
end.
tlv_tags([]) ->
[];
tlv_tags([mandatory|Rest]) ->
[mandatory|tlv_tags(Rest)];
tlv_tags([[Command,Tag]|Rest]) when is_atom(Command),is_binary(Tag) ->
[[Command,tlv_tag(Tag)]|tlv_tags(Rest)];
tlv_tags([[Command,Directives]|Rest]) when is_atom(Command),is_list(Directives) ->
[[Command,tlv_tags(Directives)]|tlv_tags(Rest)];
%% remove all empty lists
tlv_tags([[]|Rest]) ->
tlv_tags(Rest);
tlv_tags([{Name,TopType,L1}|Rest]) when is_list(L1),is_atom(TopType) ->
[{Name,TopType,tlv_tags(L1)}|tlv_tags(Rest)];
tlv_tags([[Command,Tag,L1]|Rest]) when is_list(L1),is_binary(Tag) ->
[[Command,tlv_tag(Tag),tlv_tags(L1)]|tlv_tags(Rest)];
tlv_tags([[mandatory|Rest]]) ->
[[mandatory|tlv_tags(Rest)]];
tlv_tags([L=[L1|_]|Rest]) when is_list(L1) ->
[tlv_tags(L)|tlv_tags(Rest)].
tlv_tag(<<Cl:2,_:1,TagNo:5>>) when TagNo < 31 ->
(Cl bsl 16) + TagNo;
tlv_tag(<<Cl:2,_:1,31:5,0:1,TagNo:7>>) ->
(Cl bsl 16) + TagNo;
tlv_tag(<<Cl:2,_:1,31:5,Buffer/binary>>) ->
TagNo = tlv_tag1(Buffer,0),
(Cl bsl 16) + TagNo.
tlv_tag1(<<0:1,PartialTag:7>>,Acc) ->
(Acc bsl 7) bor PartialTag;
tlv_tag1(<<1:1,PartialTag:7,Buffer/binary>>,Acc) ->
tlv_tag1(Buffer,(Acc bsl 7) bor PartialTag).
%% Reads the content from the configuration file and returns the
%% selected part chosen by InfoType. Assumes that the config file
%% content is an Erlang term.
read_config_file_info(ModuleName, InfoType) when is_atom(InfoType) ->
Name = ensure_ext(ModuleName, ".asn1config"),
CfgList = read_config_file0(Name, []),
get_config_info(CfgList, InfoType).
read_config_file(#gen{options=Options}, ModuleName) ->
Name = ensure_ext(ModuleName, ".asn1config"),
Includes = [I || {i,I} <- Options],
read_config_file0(Name, ["."|Includes]).
read_config_file0(Name, [D|Dirs]) ->
case file:consult(filename:join(D, Name)) of
{ok,CfgList} ->
CfgList;
{error,enoent} ->
read_config_file0(Name, Dirs);
{error,Reason} ->
Error = "error reading asn1 config file: " ++
file:format_error(Reason),
throw({error,Error})
end;
read_config_file0(_, []) ->
no_config_file.
ensure_ext(ModuleName, Ext) ->
Name = filename:join([ModuleName]),
case filename:extension(Name) of
Ext -> Name;
_ -> Name ++ Ext
end.
get_config_info(CfgList,InfoType) ->
case lists:keysearch(InfoType,1,CfgList) of
{value,{InfoType,Value}} ->
Value;
false ->
[]
end.
%% save_config/2 saves the Info with the key Key
%% Before saving anything check if a table exists
%% The record gen_state is saved with the key {asn1_config,gen_state}
save_config(Key,Info) ->
asn1ct_table:new_reuse(asn1_general),
asn1ct_table:insert(asn1_general, {{asn1_config, Key}, Info}).
read_config_data(Key) ->
case asn1ct_table:exists(asn1_general) of
false -> undefined;
true ->
case asn1ct_table:lookup(asn1_general,{asn1_config,Key}) of
[{_,Data}] -> Data;
Err ->
%% Err is [] when nothing was saved in the ets table
Err
end
end.
%%
%% Functions to manipulate the gen_state record saved in the
%% asn1_general ets table.
%%
%% saves input data in a new gen_state record
save_gen_state(exclusive_decode,{_,ConfList},PartIncTlvTagList) ->
State =
case get_gen_state() of
S when is_record(S,gen_state) -> S;
_ -> #gen_state{}
end,
StateRec = State#gen_state{inc_tag_pattern=PartIncTlvTagList,
inc_type_pattern=ConfList},
save_config(gen_state,StateRec);
save_gen_state(_,_,_) ->
case get_gen_state() of
S when is_record(S,gen_state) -> ok;
_ -> save_config(gen_state,#gen_state{})
end.
save_gen_state(selective_decode,{_,Type_component_name_list}) ->
State =
case get_gen_state() of
S when is_record(S,gen_state) -> S;
_ -> #gen_state{}
end,
StateRec = State#gen_state{type_pattern=Type_component_name_list},
save_config(gen_state,StateRec);
save_gen_state(selective_decode,_) ->
ok.
save_gen_state(GenState) when is_record(GenState,gen_state) ->
save_config(gen_state,GenState).
%% get_gen_state_field returns undefined if no gen_state exists or if
%% Field is undefined or the data at the field.
get_gen_state_field(Field) ->
case read_config_data(gen_state) of
undefined ->
undefined;
GenState when is_record(GenState,gen_state) ->
get_gen_state_field(GenState,Field);
Err ->
exit({error,{asn1,{"false configuration file info",Err}}})
end.
get_gen_state_field(#gen_state{active=Active},active) ->
Active;
get_gen_state_field(_,active) ->
false;
get_gen_state_field(GS,prefix) ->
GS#gen_state.prefix;
get_gen_state_field(GS,inc_tag_pattern) ->
GS#gen_state.inc_tag_pattern;
get_gen_state_field(GS,tag_pattern) ->
GS#gen_state.tag_pattern;
get_gen_state_field(GS,inc_type_pattern) ->
GS#gen_state.inc_type_pattern;
get_gen_state_field(GS,type_pattern) ->
GS#gen_state.type_pattern;
get_gen_state_field(GS,func_name) ->
GS#gen_state.func_name;
get_gen_state_field(GS,namelist) ->
GS#gen_state.namelist;
get_gen_state_field(GS,tobe_refed_funcs) ->
GS#gen_state.tobe_refed_funcs;
get_gen_state_field(GS,gen_refed_funcs) ->
GS#gen_state.gen_refed_funcs;
get_gen_state_field(GS,generated_functions) ->
GS#gen_state.generated_functions;
get_gen_state_field(GS,suffix_index) ->
GS#gen_state.suffix_index;
get_gen_state_field(GS,current_suffix_index) ->
GS#gen_state.current_suffix_index.
get_gen_state() ->
read_config_data(gen_state).
update_gen_state(Field,Data) ->
case get_gen_state() of
State when is_record(State,gen_state) ->
update_gen_state(Field,State,Data);
_ ->
exit({error,{asn1,{internal,
"tried to update nonexistent gen_state",Field,Data}}})
end.
update_gen_state(active,State,Data) ->
save_gen_state(State#gen_state{active=Data});
update_gen_state(prefix,State,Data) ->
save_gen_state(State#gen_state{prefix=Data});
update_gen_state(inc_tag_pattern,State,Data) ->
save_gen_state(State#gen_state{inc_tag_pattern=Data});
update_gen_state(tag_pattern,State,Data) ->
save_gen_state(State#gen_state{tag_pattern=Data});
update_gen_state(inc_type_pattern,State,Data) ->
save_gen_state(State#gen_state{inc_type_pattern=Data});
update_gen_state(type_pattern,State,Data) ->
save_gen_state(State#gen_state{type_pattern=Data});
update_gen_state(func_name,State,Data) ->
save_gen_state(State#gen_state{func_name=Data});
update_gen_state(namelist,State,Data) ->
save_gen_state(State#gen_state{namelist=Data});
update_gen_state(tobe_refed_funcs,State,Data) ->
save_gen_state(State#gen_state{tobe_refed_funcs=Data});
update_gen_state(gen_refed_funcs,State,Data) ->
save_gen_state(State#gen_state{gen_refed_funcs=Data});
update_gen_state(generated_functions,State,Data) ->
save_gen_state(State#gen_state{generated_functions=Data});
update_gen_state(suffix_index,State,Data) ->
save_gen_state(State#gen_state{suffix_index=Data});
update_gen_state(current_suffix_index,State,Data) ->
save_gen_state(State#gen_state{current_suffix_index=Data}).
update_namelist(Name) ->
case get_gen_state_field(namelist) of
[Name,Rest] -> update_gen_state(namelist,Rest);
[Name|Rest] -> update_gen_state(namelist,Rest);
[{Name,List}] when is_list(List) -> update_gen_state(namelist,List);
[{Name,Atom}|Rest] when is_atom(Atom) -> update_gen_state(namelist,Rest);
Other -> Other
end.
%% removes a bracket from the namelist
step_in_constructed() ->
case get_gen_state_field(namelist) of
[L] when is_list(L) ->
update_gen_state(namelist,L);
_ -> ok
end.
is_function_generated(Name) ->
case get_gen_state_field(gen_refed_funcs) of
L when is_list(L) ->
lists:member(Name,L);
_ ->
false
end.
get_tobe_refed_func(Name) ->
case get_gen_state_field(tobe_refed_funcs) of
L when is_list(L) ->
case lists:keysearch(Name,1,L) of
{_,Element} ->
Element;
_ ->
undefined
end;
_ ->
undefined
end.
%% add_tobe_refed_func saves Data that is a three or four element
%% tuple. Do not save if it exists in generated_functions, because
%% then it will be or already is generated.
add_tobe_refed_func(Data) ->
{Name,SI,Pattern} =
fun({N,Si,P,_}) -> {N,Si,P};
(D) -> D end (Data),
NewData =
case SI of
I when is_integer(I) ->
fun(D) -> D end(Data);
_ ->
fun({N,_,P}) -> {N,0,P};
({N,_,P,T}) -> {N,0,P,T} end (Data)
end,
L = get_gen_state_field(generated_functions),
case generated_functions_member(get(currmod),Name,L,Pattern) of
true ->
%% it exists in generated_functions, it has already
%% been generated or saved in tobe_refed_func
ok;
_ ->
add_once_tobe_refed_func(NewData),
%% only to get it saved in generated_functions
maybe_rename_function(tobe_refed,Name,Pattern)
end.
%% Adds only one element with same Name and Index where Data =
%% {Name,Index,Pattern}.
add_once_tobe_refed_func(Data) ->
TRFL = get_gen_state_field(tobe_refed_funcs),
{Name,Index} = {element(1,Data),element(2,Data)},
case lists:filter(fun({N,I,_}) when N==Name,I==Index ->true;
({N,I,_,_}) when N==Name,I==Index -> true;
(_) -> false end,TRFL) of
[] ->
update_gen_state(tobe_refed_funcs,[Data|TRFL]);
_ ->
ok
end.
%% Moves Name from the to be list to the generated list.
generated_refed_func(Name) ->
L = get_gen_state_field(tobe_refed_funcs),
NewL = lists:keydelete(Name,1,L),
update_gen_state(tobe_refed_funcs,NewL),
L2 = get_gen_state_field(gen_refed_funcs),
update_gen_state(gen_refed_funcs,[Name|L2]).
%% Adds Data to gen_refed_funcs field in gen_state.
add_generated_refed_func(Data) ->
case is_function_generated(Data) of
true ->
ok;
_ ->
L = get_gen_state_field(gen_refed_funcs),
update_gen_state(gen_refed_funcs,[Data|L])
end.
next_refed_func() ->
case get_gen_state_field(tobe_refed_funcs) of
[] ->
[];
[H|T] ->
update_gen_state(tobe_refed_funcs,T),
H
end.
reset_gen_state() ->
save_gen_state(#gen_state{}).
%% Adds Data to generated_functions field in gen_state.
add_generated_function(Data) ->
L = get_gen_state_field(generated_functions),
update_gen_state(generated_functions,[Data|L]).
%% Each type has its own index starting from 0. If index is 0 there is
%% no renaming.
maybe_rename_function(Mode,Name,Pattern) ->
case get_gen_state_field(generated_functions) of
[] when Mode==inc_disp -> add_generated_function({Name,0,Pattern}),
Name;
[] ->
exit({error,{asn1,internal_error_exclusive_decode}});
L ->
case {Mode,generated_functions_member(get(currmod),Name,L)} of
{_,true} ->
L2 = generated_functions_filter(get(currmod),Name,L),
case lists:keysearch(Pattern,3,L2) of
false ->
%% name existed, but not pattern
NextIndex = length(L2),
%% rename function
Suffix = lists:concat(["_",NextIndex]),
NewName =
maybe_rename_function2(type_check(Name),Name,
Suffix),
add_generated_function({Name,NextIndex,Pattern}),
NewName;
Value ->
%% name and pattern existed
%% do not save any new index
Suffix = make_suffix(Value),
Name2 =
case Name of
#'Externaltypereference'{type=T} -> T;
_ -> Name
end,
lists:concat([Name2,Suffix])
end;
{inc_disp,_} ->
%% this is when decode_partial_inc_disp/2 is
%% generated
add_generated_function({Name,0,Pattern}),
Name;
_ -> % this if call from add_tobe_refed_func
add_generated_function({Name,0,Pattern}),
Name
end
end.
maybe_rename_function2(record,#'Externaltypereference'{type=Name},Suffix) ->
lists:concat([Name,Suffix]);
maybe_rename_function2(list,List,Suffix) ->
lists:concat([asn1ct_gen:list2name(List),Suffix]);
maybe_rename_function2(Thing,Name,Suffix)
when Thing==atom;Thing==integer;Thing==string ->
lists:concat([Name,Suffix]).
%% generated_functions_member/4 checks on both Name and Pattern if
%% the element exists in L
generated_functions_member(M,Name,L,Pattern) ->
case generated_functions_member(M,Name,L) of
true ->
L2 = generated_functions_filter(M,Name,L),
case lists:keysearch(Pattern,3,L2) of
{value,_} ->
true;
_ -> false
end;
_ -> false
end.
generated_functions_member(_M,Name,[{Name,_,_}|_]) ->
true;
generated_functions_member(M,#'Externaltypereference'{module=M,type=T},
[{#'Externaltypereference'{module=M,type=T}
,_,_}|_]) ->
true;
generated_functions_member(M,#'Externaltypereference'{module=M,type=Name},
[{Name,_,_}|_]) ->
true;
generated_functions_member(M,Name,[_|T]) ->
generated_functions_member(M,Name,T);
generated_functions_member(_,_,[]) ->
false.
generated_functions_filter(_,Name,L) when is_atom(Name);is_list(Name) ->
lists:filter(fun({N,_,_}) when N==Name -> true;
(_) -> false
end, L);
generated_functions_filter(M,#'Externaltypereference'{module=M,type=Name},L)->
%% remove top typename from patterns
RemoveTType =
fun({N,I,[N,P]}) when N == Name ->
{N,I,P};
({#'Externaltypereference'{module=M1,type=N},I,P}) when M1==M ->
{N,I,P};
(P) -> P
end,
L2 = lists:map(RemoveTType,L),
generated_functions_filter(M,Name,L2).
maybe_saved_sindex(Name,Pattern) ->
case get_gen_state_field(generated_functions) of
[] -> false;
L ->
case generated_functions_member(get(currmod),Name,L) of
true ->
L2 = generated_functions_filter(get(currmod),Name,L),
case lists:keysearch(Pattern,3,L2) of
{value,{_,I,_}} ->
I;
_ -> length(L2) % this should be length(L2)!
end;
_ -> false
end
end.
current_sindex() ->
get_gen_state_field(current_suffix_index).
set_current_sindex(Index) ->
update_gen_state(current_suffix_index,Index).
type_check(A) when is_atom(A) ->
atom;
type_check(L) when is_list(L) ->
Pred = fun(X) when X=<255 ->
false;
(_) -> true
end,
case lists:filter(Pred,L) of
[] ->
string;
_ ->
list
end;
type_check(#'Externaltypereference'{}) ->
record.
make_suffix({_,{_,0,_}}) ->
"";
make_suffix({_,{_,I,_}}) ->
lists:concat(["_",I]);
make_suffix(_) ->
"".
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Report functions.
%%
%% Error messages are controlled with the 'errors' compiler option
%% Warning messages are controlled with the 'warnings' compiler option
%% Verbose messages are controlled with the 'verbose' compiler option
error(Format, Args, S) ->
case is_error(S) of
true ->
io:format(Format, Args);
false ->
ok
end.
warning(Format, Args, S) ->
case is_warning(S) of
true ->
io:format("Warning: " ++ Format, Args);
false ->
ok
end.
warning(Format, Args, S, Reason) ->
case {is_werr(S), is_error(S), is_warning(S)} of
{true, true, _} ->
io:format(Format, Args),
throw({error, Reason});
{false, _, true} ->
io:format(Format, Args);
_ ->
ok
end.
verbose(Format, Args, S) ->
case is_verbose(S) of
true ->
io:format(Format, Args);
false ->
ok
end.
format_error({write_error,File,Reason}) ->
io_lib:format("writing output file ~s failed: ~s",
[File,file:format_error(Reason)]).
is_error(#state{options=Opts}) ->
is_error(Opts);
is_error(#gen{options=Opts}) ->
is_error(Opts);
is_error(O) ->
lists:member(errors, O) orelse is_verbose(O).
is_warning(S) when is_record(S, state) ->
is_warning(S#state.options);
is_warning(O) ->
lists:member(warnings, O) orelse is_verbose(O).
is_verbose(#state{options=Opts}) ->
is_verbose(Opts);
is_verbose(#gen{options=Opts}) ->
is_verbose(Opts);
is_verbose(O) ->
lists:member(verbose, O).
is_werr(S) when is_record(S, state) ->
is_werr(S#state.options);
is_werr(O) ->
lists:member(warnings_as_errors, O).
in_process(Fun) ->
Parent = self(),
Pid = spawn_link(fun() -> process(Parent, Fun) end),
receive
{Pid, Result} -> Result;
{Pid, Class, Reason, Stack} ->
ST = try throw(x) catch throw:x:Stk -> Stk end,
erlang:raise(Class, Reason, Stack ++ ST)
end.
process(Parent, Fun) ->
try
Parent ! {self(), Fun()}
catch Class:Reason:Stack ->
Parent ! {self(), Class, Reason, Stack}
end.
