%% ``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. %% %% The Initial Developer of the Original Code is Ericsson Utvecklings AB. %% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings %% AB. All Rights Reserved.'' %% %% $Id: asn1ct_gen_ber.erl,v 1.1 2008/12/17 09:53:29 mikpe Exp $ -module(asn1ct_gen_ber). %% Generate erlang module which handles (PER) encode and decode for %% all types in an ASN.1 module -include("asn1_records.hrl"). -export([pgen/4]). -export([decode_class/1, decode_type/1]). -export([add_removed_bytes/0]). -export([gen_encode/2,gen_encode/3,gen_decode/2,gen_decode/3]). -export([gen_encode_prim/4]). -export([gen_dec_prim/8]). -export([gen_objectset_code/2, gen_obj_code/3]). -export([re_wrap_erule/1]). -export([unused_var/2]). -import(asn1ct_gen, [emit/1,demit/1]). % the encoding of class of tag bits 8 and 7 -define(UNIVERSAL, 0). -define(APPLICATION, 16#40). -define(CONTEXT, 16#80). -define(PRIVATE, 16#C0). % primitive or constructed encoding % bit 6 -define(PRIMITIVE, 0). -define(CONSTRUCTED, 2#00100000). -define(T_ObjectDescriptor, ?UNIVERSAL bor ?PRIMITIVE bor 7). % restricted character string types -define(T_NumericString, ?UNIVERSAL bor ?PRIMITIVE bor 18). %can be constructed -define(T_PrintableString, ?UNIVERSAL bor ?PRIMITIVE bor 19). %can be constructed -define(T_TeletexString, ?UNIVERSAL bor ?PRIMITIVE bor 20). %can be constructed -define(T_VideotexString, ?UNIVERSAL bor ?PRIMITIVE bor 21). %can be constructed -define(T_IA5String, ?UNIVERSAL bor ?PRIMITIVE bor 22). %can be constructed -define(T_GraphicString, ?UNIVERSAL bor ?PRIMITIVE bor 25). %can be constructed -define(T_VisibleString, ?UNIVERSAL bor ?PRIMITIVE bor 26). %can be constructed -define(T_GeneralString, ?UNIVERSAL bor ?PRIMITIVE bor 27). %can be constructed %% pgen(Erules, Module, TypeOrVal) %% Generate Erlang module (.erl) and (.hrl) file corresponding to an ASN.1 module %% .hrl file is only generated if necessary %% Erules = per | ber %% Module = atom() %% TypeOrVal = {TypeList,ValueList,PTypeList} %% TypeList = ValueList = [atom()] pgen(OutFile,Erules,Module,TypeOrVal) -> asn1ct_gen:pgen_module(OutFile,Erules,Module,TypeOrVal,true). %%=============================================================================== %%=============================================================================== %%=============================================================================== %% Generate ENCODING %%=============================================================================== %%=============================================================================== %%=============================================================================== %%=============================================================================== %% encode #{typedef, {pos, name, typespec}} %%=============================================================================== gen_encode(Erules,Type) when record(Type,typedef) -> gen_encode_user(Erules,Type). %%=============================================================================== %% encode #{type, {tag, def, constraint}} %%=============================================================================== gen_encode(Erules,Typename,Type) when record(Type,type) -> InnerType = asn1ct_gen:get_inner(Type#type.def), ObjFun = case lists:keysearch(objfun,1,Type#type.tablecinf) of {value,{_,_Name}} -> ", ObjFun"; false -> "" end, case asn1ct_gen:type(InnerType) of {constructed,bif} -> emit([nl,nl,nl,"%%================================"]), emit([nl,"%% ",asn1ct_gen:list2name(Typename)]), emit([nl,"%%================================",nl]), case lists:member(InnerType,['SET','SEQUENCE']) of true -> case get(asn_keyed_list) of true -> CompList = case Type#type.def of #'SEQUENCE'{components=Cl} -> Cl; #'SET'{components=Cl} -> Cl end, emit([nl,"'enc_",asn1ct_gen:list2name(Typename), "'(Val, TagIn",ObjFun, ") when list(Val) ->",nl]), emit([" 'enc_",asn1ct_gen:list2name(Typename), "'(?RT_BER:fixoptionals(", {asis,optionals(CompList)}, ",Val), TagIn",ObjFun,");",nl,nl]); _ -> true end; _ -> emit([nl,"'enc_",asn1ct_gen:list2name(Typename), "'({'",asn1ct_gen:list2name(Typename), "',Val}, TagIn",ObjFun,") ->",nl]), emit([" 'enc_",asn1ct_gen:list2name(Typename), "'(Val, TagIn",ObjFun,");",nl,nl]) end, emit(["'enc_",asn1ct_gen:list2name(Typename), "'(Val, TagIn",ObjFun,") ->",nl," "]), asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type); _ -> true end; %%=============================================================================== %% encode ComponentType %%=============================================================================== gen_encode(Erules,Tname,{'ComponentType',_Pos,Cname,Type,_,_}) -> NewTname = [Cname|Tname], %% The tag is set to [] to avoid that it is %% taken into account twice, both as a component/alternative (passed as %% argument to the encode decode function and within the encode decode %% function it self. NewType = Type#type{tag=[]}, gen_encode(Erules,NewTname,NewType). gen_encode_user(Erules,D) when record(D,typedef) -> Typename = [D#typedef.name], Type = D#typedef.typespec, InnerType = asn1ct_gen:get_inner(Type#type.def), OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], emit([nl,nl,"%%================================"]), emit([nl,"%% ",Typename]), emit([nl,"%%================================",nl]), case lists:member(InnerType,['SET','SEQUENCE']) of true -> case get(asn_keyed_list) of true -> CompList = case Type#type.def of #'SEQUENCE'{components=Cl} -> Cl; #'SET'{components=Cl} -> Cl end, emit([nl,"'enc_",asn1ct_gen:list2name(Typename), "'(Val, TagIn) when list(Val) ->",nl]), emit([" 'enc_",asn1ct_gen:list2name(Typename), "'(?RT_BER:fixoptionals(", {asis,optionals(CompList)}, ",Val), TagIn);",nl,nl]); _ -> true end; _ -> emit({nl,"'enc_",asn1ct_gen:list2name(Typename), "'({'",asn1ct_gen:list2name(Typename),"',Val}, TagIn) ->",nl}), emit({" 'enc_",asn1ct_gen:list2name(Typename),"'(Val, TagIn);",nl,nl}) end, emit({"'enc_",asn1ct_gen:list2name(Typename),"'(", unused_var("Val",Type#type.def),", TagIn) ->",nl}), CurrentMod = get(currmod), case asn1ct_gen:type(InnerType) of {constructed,bif} -> asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,D); {primitive,bif} -> asn1ct_gen_ber:gen_encode_prim(ber,Type,["TagIn ++ ", {asis,Tag}],"Val"), emit([".",nl]); #typereference{val=Ename} -> emit([" 'enc_",Ename,"'(Val, TagIn ++ ",{asis,Tag},").",nl]); #'Externaltypereference'{module=CurrentMod,type=Etype} -> emit([" 'enc_",Etype,"'(Val, TagIn ++ ", {asis,Tag},").",nl]); #'Externaltypereference'{module=Emod,type=Etype} -> emit([" '",Emod,"':'enc_",Etype,"'(Val, TagIn ++ ", {asis,Tag},").",nl]); 'ASN1_OPEN_TYPE' -> emit(["%% OPEN TYPE",nl]), asn1ct_gen_ber:gen_encode_prim(ber, Type#type{def='ASN1_OPEN_TYPE'}, ["TagIn ++ ", {asis,Tag}],"Val"), emit([".",nl]) end. unused_var(Var,#'SEQUENCE'{components=Cl}) -> unused_var1(Var,Cl); unused_var(Var,#'SET'{components=Cl}) -> unused_var1(Var,Cl); unused_var(Var,_) -> Var. unused_var1(Var,Cs) when Cs == []; Cs == {[],[]} -> lists:concat(["_",Var]); unused_var1(Var,_) -> Var. unused_optormand_var(Var,Def) -> case asn1ct_gen:type(asn1ct_gen:get_inner(Def)) of 'ASN1_OPEN_TYPE' -> lists:concat(["_",Var]); _ -> Var end. gen_encode_prim(_Erules,D,DoTag,Value) when record(D,type) -> %%% Currently not used for BER (except for BitString) and therefore replaced %%% with [] as a placeholder BitStringConstraint = D#type.constraint, Constraint = [], asn1ct_name:new(enumval), case D#type.def of 'BOOLEAN' -> emit_encode_func('boolean',Value,DoTag); 'INTEGER' -> emit_encode_func('integer',Constraint,Value,DoTag); {'INTEGER',NamedNumberList} -> emit_encode_func('integer',Constraint,Value, NamedNumberList,DoTag); {'ENUMERATED',NamedNumberList={_,_}} -> emit(["case (case ",Value," of {asn1_enum,_}->",Value,";{_,_}->element(2,",Value,");_->", Value," end) of",nl]), emit_enc_enumerated_cases(NamedNumberList,DoTag); {'ENUMERATED',NamedNumberList} -> emit(["case (case ",Value," of {_,_}->element(2,",Value,");_->", Value," end) of",nl]), emit_enc_enumerated_cases(NamedNumberList,DoTag); {'BIT STRING',NamedNumberList} -> emit_encode_func('bit_string',BitStringConstraint,Value, NamedNumberList,DoTag); 'ANY' -> emit_encode_func('open_type', Value,DoTag); 'NULL' -> emit_encode_func('null',Value,DoTag); 'OBJECT IDENTIFIER' -> emit_encode_func("object_identifier",Value,DoTag); 'ObjectDescriptor' -> emit_encode_func('restricted_string',Constraint,Value, ?T_ObjectDescriptor,DoTag); 'OCTET STRING' -> emit_encode_func('octet_string',Constraint,Value,DoTag); 'NumericString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_NumericString,DoTag); 'TeletexString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_TeletexString,DoTag); 'VideotexString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_VideotexString,DoTag); 'GraphicString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_GraphicString,DoTag); 'VisibleString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_VisibleString,DoTag); 'GeneralString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_GeneralString,DoTag); 'PrintableString' -> emit_encode_func('restricted_string',Constraint,Value, ?T_PrintableString,DoTag); 'IA5String' -> emit_encode_func('restricted_string',Constraint,Value, ?T_IA5String,DoTag); 'UniversalString' -> emit_encode_func('universal_string',Constraint,Value,DoTag); 'BMPString' -> emit_encode_func('BMP_string',Constraint,Value,DoTag); 'UTCTime' -> emit_encode_func('utc_time',Constraint,Value,DoTag); 'GeneralizedTime' -> emit_encode_func('generalized_time',Constraint,Value,DoTag); 'ASN1_OPEN_TYPE' -> emit_encode_func('open_type', Value,DoTag); XX -> exit({'cannot encode' ,XX}) end. emit_encode_func(Name,Value,Tags) when atom(Name) -> emit_encode_func(atom_to_list(Name),Value,Tags); emit_encode_func(Name,Value,Tags) -> Fname = "?RT_BER:encode_" ++ Name, emit([Fname,"(",Value,", ",Tags,")"]). emit_encode_func(Name,Constraint,Value,Tags) when atom(Name) -> emit_encode_func(atom_to_list(Name),Constraint,Value,Tags); emit_encode_func(Name,Constraint,Value,Tags) -> Fname = "?RT_BER:encode_" ++ Name, emit([Fname,"(",{asis,Constraint},", ",Value,", ",Tags,")"]). emit_encode_func(Name,Constraint,Value,Asis,Tags) when atom(Name) -> emit_encode_func(atom_to_list(Name),Constraint,Value,Asis,Tags); emit_encode_func(Name,Constraint,Value,Asis,Tags) -> Fname = "?RT_BER:encode_" ++ Name, emit([Fname,"(",{asis,Constraint},", ",Value, ", ",{asis,Asis}, ", ",Tags,")"]). emit_enc_enumerated_cases({L1,L2}, Tags) -> emit_enc_enumerated_cases(L1++L2, Tags, ext); emit_enc_enumerated_cases(L, Tags) -> emit_enc_enumerated_cases(L, Tags, noext). emit_enc_enumerated_cases([{EnumName,EnumVal},H2|T], Tags, Ext) -> emit([{asis,EnumName}," -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,");",nl]), %% emit(["'",{asis,EnumName},"' -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,");",nl]), emit_enc_enumerated_cases([H2|T], Tags, Ext); emit_enc_enumerated_cases([{EnumName,EnumVal}], Tags, Ext) -> emit([{asis,EnumName}," -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,")"]), %% emit(["'",{asis,EnumName},"' -> ?RT_BER:encode_enumerated(",EnumVal,",",Tags,")"]), case Ext of noext -> emit([";",nl]); ext -> emit([";",nl,"{asn1_enum,",{curr,enumval},"} -> ", "?RT_BER:encode_enumerated(",{curr,enumval},",",Tags,");",nl]), asn1ct_name:new(enumval) end, emit([{curr,enumval}," -> exit({error,{asn1, {enumerated_not_in_range,",{curr, enumval},"}}})"]), emit([nl,"end"]). %%=============================================================================== %%=============================================================================== %%=============================================================================== %% Generate DECODING %%=============================================================================== %%=============================================================================== %%=============================================================================== %%=============================================================================== %% decode #{typedef, {pos, name, typespec}} %%=============================================================================== gen_decode(Erules,Type) when record(Type,typedef) -> D = Type, emit({nl,nl}), emit({"'dec_",Type#typedef.name,"'(Bytes, OptOrMand) ->",nl}), emit({" 'dec_",Type#typedef.name,"'(Bytes, OptOrMand, []).",nl,nl}), emit({"'dec_",Type#typedef.name,"'(Bytes, ", unused_optormand_var("OptOrMand",(Type#typedef.typespec)#type.def),", TagIn) ->",nl}), dbdec(Type#typedef.name), gen_decode_user(Erules,D). %%=============================================================================== %% decode #{type, {tag, def, constraint}} %%=============================================================================== gen_decode(Erules,Tname,Type) when record(Type,type) -> Typename = Tname, InnerType = asn1ct_gen:get_inner(Type#type.def), case asn1ct_gen:type(InnerType) of {constructed,bif} -> ObjFun = case Type#type.tablecinf of [{objfun,_}|_R] -> ", ObjFun"; _ -> "" end, emit({"'dec_",asn1ct_gen:list2name(Typename),"'(Bytes, OptOrMand, TagIn",ObjFun,") ->",nl}), dbdec(Typename), asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,Type); _ -> true end; %%=============================================================================== %% decode ComponentType %%=============================================================================== gen_decode(Erules,Tname,{'ComponentType',_Pos,Cname,Type,_,_}) -> NewTname = [Cname|Tname], %% The tag is set to [] to avoid that it is %% taken into account twice, both as a component/alternative (passed as %% argument to the encode decode function and within the encode decode %% function it self. NewType = Type#type{tag=[]}, gen_decode(Erules,NewTname,NewType). gen_decode_user(Erules,D) when record(D,typedef) -> Typename = [D#typedef.name], Def = D#typedef.typespec, InnerType = asn1ct_gen:get_inner(Def#type.def), InnerTag = Def#type.tag , Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- InnerTag], case asn1ct_gen:type(InnerType) of 'ASN1_OPEN_TYPE' -> BytesVar = asn1ct_gen:mk_var(asn1ct_name:curr(bytes)), asn1ct_name:new(len), gen_dec_prim(Erules, Def#type{def='ASN1_OPEN_TYPE'}, BytesVar, Tag, "TagIn",no_length, ?PRIMITIVE,"OptOrMand"), emit({".",nl,nl}); {primitive,bif} -> BytesVar = asn1ct_gen:mk_var(asn1ct_name:curr(bytes)), asn1ct_name:new(len), gen_dec_prim(Erules, Def, BytesVar, Tag, "TagIn",no_length, ?PRIMITIVE,"OptOrMand"), emit({".",nl,nl}); {constructed,bif} -> asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,D); TheType -> DecFunName = mkfuncname(TheType,dec), emit({DecFunName,"(",{curr,bytes}, ", OptOrMand, TagIn++",{asis,Tag},")"}), emit({".",nl,nl}) end. gen_dec_prim(Erules,Att,BytesVar,DoTag,TagIn,Length,_Form,OptOrMand) -> Typename = Att#type.def, %% Currently not used for BER replaced with [] as place holder %% Constraint = Att#type.constraint, %% Constraint = [], Constraint = case get_constraint(Att#type.constraint,'SizeConstraint') of no -> []; Tc -> Tc end, ValueRange = case get_constraint(Att#type.constraint,'ValueRange') of no -> []; Tv -> Tv end, SingleValue = case get_constraint(Att#type.constraint,'SingleValue') of no -> []; Sv -> Sv end, AsBin = case get(binary_strings) of true -> "_as_bin"; _ -> "" end, NewTypeName = case Typename of 'ANY' -> 'ASN1_OPEN_TYPE'; _ -> Typename end, DoLength = case NewTypeName of 'BOOLEAN'-> emit({"?RT_BER:decode_boolean(",BytesVar,","}), false; 'INTEGER' -> emit({"?RT_BER:decode_integer(",BytesVar,",", {asis,int_constr(SingleValue,ValueRange)},","}), false; {'INTEGER',NamedNumberList} -> emit({"?RT_BER:decode_integer(",BytesVar,",", {asis,int_constr(SingleValue,ValueRange)},",", {asis,NamedNumberList},","}), false; {'ENUMERATED',NamedNumberList} -> emit({"?RT_BER:decode_enumerated(",BytesVar,",", {asis,Constraint},",", {asis,NamedNumberList},","}), false; {'BIT STRING',NamedNumberList} -> case get(compact_bit_string) of true -> emit({"?RT_BER:decode_compact_bit_string(", BytesVar,",",{asis,Constraint},",", {asis,NamedNumberList},","}); _ -> emit({"?RT_BER:decode_bit_string(",BytesVar,",", {asis,Constraint},",", {asis,NamedNumberList},","}) end, true; 'NULL' -> emit({"?RT_BER:decode_null(",BytesVar,","}), false; 'OBJECT IDENTIFIER' -> emit({"?RT_BER:decode_object_identifier(",BytesVar,","}), false; 'ObjectDescriptor' -> emit({"?RT_BER:decode_restricted_string(", BytesVar,",",{asis,Constraint},",",{asis,?T_ObjectDescriptor},","}), true; 'OCTET STRING' -> emit({"?RT_BER:decode_octet_string",AsBin,"(",BytesVar,",",{asis,Constraint},","}), true; 'NumericString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_NumericString},","}),true; 'TeletexString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_TeletexString},","}), true; 'VideotexString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_VideotexString},","}), true; 'GraphicString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_GraphicString},","}) ,true; 'VisibleString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_VisibleString},","}), true; 'GeneralString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_GeneralString},","}), true; 'PrintableString' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_PrintableString},","}), true; 'IA5String' -> emit({"?RT_BER:decode_restricted_string",AsBin,"(", BytesVar,",",{asis,Constraint},",",{asis,?T_IA5String},","}), true; 'UniversalString' -> emit({"?RT_BER:decode_universal_string",AsBin,"(", BytesVar,",",{asis,Constraint},","}), true; 'BMPString' -> emit({"?RT_BER:decode_BMP_string",AsBin,"(", BytesVar,",",{asis,Constraint},","}), true; 'UTCTime' -> emit({"?RT_BER:decode_utc_time",AsBin,"(", BytesVar,",",{asis,Constraint},","}), true; 'GeneralizedTime' -> emit({"?RT_BER:decode_generalized_time",AsBin,"(", BytesVar,",",{asis,Constraint},","}), true; 'ASN1_OPEN_TYPE' -> emit(["?RT_BER:decode_open_type(",re_wrap_erule(Erules),",", BytesVar,","]), false; Other -> exit({'cannot decode' ,Other}) end, NewLength = case DoLength of true -> [", ", Length]; false -> "" end, NewOptOrMand = case OptOrMand of _ when list(OptOrMand) -> OptOrMand; mandatory -> {asis,mandatory}; _ -> {asis,opt_or_default} end, case {TagIn,NewTypeName} of {[],'ASN1_OPEN_TYPE'} -> emit([{asis,DoTag},")"]); {_,'ASN1_OPEN_TYPE'} -> emit([TagIn,"++",{asis,DoTag},")"]); {[],_} -> emit([{asis,DoTag},NewLength,", ",NewOptOrMand,")"]); _ when list(TagIn) -> emit([TagIn,"++",{asis,DoTag},NewLength,", ",NewOptOrMand,")"]) end. int_constr([],[]) -> []; int_constr([],ValueRange) -> ValueRange; int_constr(SingleValue,[]) -> SingleValue; int_constr(SV,VR) -> [SV,VR]. %% Object code generating for encoding and decoding %% ------------------------------------------------ gen_obj_code(Erules,_Module,Obj) when record(Obj,typedef) -> ObjName = Obj#typedef.name, Def = Obj#typedef.typespec, #'Externaltypereference'{module=M,type=ClName} = Def#'Object'.classname, Class = asn1_db:dbget(M,ClName), {object,_,Fields} = Def#'Object'.def, emit({nl,nl,nl,"%%================================"}), emit({nl,"%% ",ObjName}), emit({nl,"%%================================",nl}), EncConstructed = gen_encode_objectfields(ClName,get_class_fields(Class), ObjName,Fields,[]), emit(nl), gen_encode_constr_type(Erules,EncConstructed), emit(nl), DecConstructed = gen_decode_objectfields(ClName,get_class_fields(Class), ObjName,Fields,[]), emit(nl), gen_decode_constr_type(Erules,DecConstructed); gen_obj_code(_Erules,_Module,Obj) when record(Obj,pobjectdef) -> ok. gen_encode_objectfields(ClassName,[{typefield,Name,OptOrMand}|Rest], ObjName,ObjectFields,ConstrAcc) -> EmitFuncClause = fun(Args) -> emit(["'enc_",ObjName,"'(",{asis,Name}, ", ",Args,", _RestPrimFieldName) ->",nl]) end, % emit(["'enc_",ObjName,"'(",{asis,Name}, % ", Val, TagIn, _RestPrimFieldName) ->",nl]), MaybeConstr= case {get_object_field(Name,ObjectFields),OptOrMand} of {false,'MANDATORY'} -> %% this case is illegal exit({error,{asn1,{"missing mandatory field in object", ObjName}}}); {false,'OPTIONAL'} -> EmitFuncClause("_, _"), emit([" {[],0}"]), []; {false,{'DEFAULT',DefaultType}} -> EmitFuncClause("Val, TagIn"), gen_encode_default_call(ClassName,Name,DefaultType); {{Name,TypeSpec},_} -> %% A specified field owerwrites any 'DEFAULT' or %% 'OPTIONAL' field in the class EmitFuncClause("Val, TagIn"), gen_encode_field_call(ObjName,Name,TypeSpec) end, case more_genfields(Rest) of true -> emit([";",nl]); false -> emit([".",nl]) end, gen_encode_objectfields(ClassName,Rest,ObjName,ObjectFields, MaybeConstr++ConstrAcc); gen_encode_objectfields(ClassName,[{objectfield,Name,_,_,OptOrMand}|Rest], ObjName,ObjectFields,ConstrAcc) -> EmitFuncClause = fun(Args) -> emit(["'enc_",ObjName,"'(",{asis,Name}, ", ",Args,") ->",nl]) end, % emit(["'enc_",ObjName,"'(",{asis,Name}, % ", Val, TagIn, [H|T]) ->",nl]), case {get_object_field(Name,ObjectFields),OptOrMand} of {false,'MANDATORY'} -> exit({error,{asn1,{"missing mandatory field in object", ObjName}}}); {false,'OPTIONAL'} -> EmitFuncClause("_,_,_"), emit([" exit({error,{'use of missing field in object', ",Name, "}})"]); {false,{'DEFAULT',_DefaultObject}} -> exit({error,{asn1,{"not implemented yet",Name}}}); {{Name,TypeSpec},_} -> EmitFuncClause(" Val, TagIn, [H|T]"), case TypeSpec#typedef.name of {ExtMod,TypeName} -> emit({indent(3),"'",ExtMod,"':'enc_",TypeName, "'(H, Val, TagIn, T)"}); TypeName -> emit({indent(3),"'enc_",TypeName,"'(H, Val, TagIn, T)"}) end end, case more_genfields(Rest) of true -> emit([";",nl]); false -> emit([".",nl]) end, gen_encode_objectfields(ClassName,Rest,ObjName,ObjectFields,ConstrAcc); gen_encode_objectfields(ClassName,[_|Cs],O,OF,Acc) -> gen_encode_objectfields(ClassName,Cs,O,OF,Acc); gen_encode_objectfields(_,[],_,_,Acc) -> Acc. % gen_encode_objectfields(Class,ObjName,[{FieldName,Type}|Rest],ConstrAcc) -> % Fields = Class#objectclass.fields, % MaybeConstr= % case is_typefield(Fields,FieldName) of % true -> % Def = Type#typedef.typespec, % OTag = Def#type.tag, % Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], % emit({"'enc_",ObjName,"'(",{asis,FieldName}, % ", Val, TagIn, RestPrimFieldName) ->",nl}), % CAcc= % case Type#typedef.name of % {primitive,bif} -> % gen_encode_prim(ber,Def,["TagIn ++ ",{asis,Tag}], % "Val"), % []; % {constructed,bif} -> % %%InnerType = asn1ct_gen:get_inner(Def#type.def), % %%asn1ct_gen:gen_encode_constructed(ber,[ObjName], % %% InnerType,Def); % emit({" 'enc_",ObjName,'_',FieldName, % "'(Val, TagIn ++ ",{asis,Tag},")"}), % [{['enc_',ObjName,'_',FieldName],Def}]; % {ExtMod,TypeName} -> % emit({" '",ExtMod,"':'enc_",TypeName, % "'(Val, TagIn ++ ",{asis,Tag},")"}), % []; % TypeName -> % emit({" 'enc_",TypeName,"'(Val, TagIn ++ ", % {asis,Tag},")"}), % [] % end, % case more_genfields(Fields,Rest) of % true -> % emit({";",nl}); % false -> % emit({".",nl}) % end, % CAcc; % {false,objectfield} -> % emit({"'enc_",ObjName,"'(",{asis,FieldName}, % ", Val, TagIn, [H|T]) ->",nl}), % case Type#typedef.name of % {ExtMod,TypeName} -> % emit({indent(3),"'",ExtMod,"':'enc_",TypeName, % "'(H, Val, TagIn, T)"}); % TypeName -> % emit({indent(3),"'enc_",TypeName,"'(H, Val, TagIn, T)"}) % end, % case more_genfields(Fields,Rest) of % true -> % emit({";",nl}); % false -> % emit({".",nl}) % end, % []; % {false,_} -> [] % end, % gen_encode_objectfields(Class,ObjName,Rest,MaybeConstr ++ ConstrAcc); % gen_encode_objectfields(C,O,[H|T],Acc) -> % gen_encode_objectfields(C,O,T,Acc); % gen_encode_objectfields(_,_,[],Acc) -> % Acc. % gen_encode_constr_type([{Name,Def}|Rest]) -> % emit({Name,"(Val,TagIn) ->",nl}), % InnerType = asn1ct_gen:get_inner(Def#type.def), % asn1ct_gen:gen_encode_constructed(ber,Name,InnerType,Def), % gen_encode_constr_type(Rest); gen_encode_constr_type(Erules,[TypeDef|Rest]) when record(TypeDef,typedef) -> case is_already_generated(enc,TypeDef#typedef.name) of true -> ok; _ -> gen_encode_user(Erules,TypeDef) end, gen_encode_constr_type(Erules,Rest); gen_encode_constr_type(_,[]) -> ok. gen_encode_field_call(ObjName,FieldName,Type) -> Def = Type#typedef.typespec, OTag = Def#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case Type#typedef.name of {primitive,bif} -> %%tag should be the primitive tag gen_encode_prim(ber,Def,["TagIn ++ ",{asis,Tag}], "Val"), []; {constructed,bif} -> emit({" 'enc_",ObjName,'_',FieldName, "'(Val, TagIn ++",{asis,Tag},")"}), [Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}]; {ExtMod,TypeName} -> emit({" '",ExtMod,"':'enc_",TypeName, "'(Val, TagIn ++ ",{asis,Tag},")"}), []; TypeName -> emit({" 'enc_",TypeName,"'(Val, TagIn ++ ",{asis,Tag},")"}), [] end. gen_encode_default_call(ClassName,FieldName,Type) -> CurrentMod = get(currmod), InnerType = asn1ct_gen:get_inner(Type#type.def), OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case asn1ct_gen:type(InnerType) of {constructed,bif} -> %% asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type); emit([" 'enc_",ClassName,'_',FieldName,"'(Bytes, TagIn ++ ", {asis,Tag},")"]), [#typedef{name=list_to_atom(lists:concat([ClassName,'_',FieldName])), typespec=Type}]; {primitive,bif} -> gen_encode_prim(ber,Type,["TagIn ++ ",{asis,Tag}],"Val"), []; #'Externaltypereference'{module=CurrentMod,type=Etype} -> emit([" 'enc_",Etype,"'(Val, TagIn ++ ",{asis,Tag},")",nl]), []; #'Externaltypereference'{module=Emod,type=Etype} -> emit([" '",Emod,"':'enc_",Etype,"'(Val, TagIn ++ ",{asis,Tag},")",nl]), [] end. gen_decode_objectfields(ClassName,[{typefield,Name,OptOrMand}|Rest], ObjName,ObjectFields,ConstrAcc) -> EmitFuncClause = fun(Args) -> emit(["'dec_",ObjName,"'(",{asis,Name}, ", ",Args,"_) ->",nl]) end, % emit(["'dec_",ObjName,"'(",{asis,Name}, % ", Bytes, TagIn, RestPrimFieldName) ->",nl]), MaybeConstr= case {get_object_field(Name,ObjectFields),OptOrMand} of {false,'MANDATORY'} -> %% this case is illegal exit({error,{asn1,{"missing mandatory field in object", ObjName}}}); {false,'OPTIONAL'} -> EmitFuncClause("_, _,"), emit([" asn1_NOVALUE"]), []; {false,{'DEFAULT',DefaultType}} -> EmitFuncClause("Bytes, TagIn,"), gen_decode_default_call(ClassName,Name,"Bytes",DefaultType); {{Name,TypeSpec},_} -> %% A specified field owerwrites any 'DEFAULT' or %% 'OPTIONAL' field in the class EmitFuncClause("Bytes, TagIn,"), gen_decode_field_call(ObjName,Name,"Bytes",TypeSpec) end, case more_genfields(Rest) of true -> emit([";",nl]); false -> emit([".",nl]) end, gen_decode_objectfields(ClassName,Rest,ObjName,ObjectFields,MaybeConstr++ConstrAcc); gen_decode_objectfields(ClassName,[{objectfield,Name,_,_,OptOrMand}|Rest], ObjName,ObjectFields,ConstrAcc) -> EmitFuncClause = fun(Args) -> emit(["'dec_",ObjName,"'(",{asis,Name}, ", ",Args,") ->",nl]) end, % emit(["'dec_",ObjName,"'(",{asis,Name}, % ", Bytes,TagIn,[H|T]) ->",nl]), case {get_object_field(Name,ObjectFields),OptOrMand} of {false,'MANDATORY'} -> exit({error,{asn1,{"missing mandatory field in object", ObjName}}}); {false,'OPTIONAL'} -> EmitFuncClause("_,_,_"), emit([" exit({error,{'illegal use of missing field in object', ",Name, "}})"]); {false,{'DEFAULT',_DefaultObject}} -> exit({error,{asn1,{"not implemented yet",Name}}}); {{Name,TypeSpec},_} -> EmitFuncClause("Bytes,TagIn,[H|T]"), case TypeSpec#typedef.name of {ExtMod,TypeName} -> emit({indent(3),"'",ExtMod,"':'dec_",TypeName, "'(H, Bytes, TagIn, T)"}); TypeName -> emit({indent(3),"'dec_",TypeName,"'(H, Bytes, TagIn, T)"}) end end, case more_genfields(Rest) of true -> emit([";",nl]); false -> emit([".",nl]) end, gen_decode_objectfields(ClassName,Rest,ObjName,ObjectFields,ConstrAcc); gen_decode_objectfields(CN,[_|Cs],O,OF,CAcc) -> gen_decode_objectfields(CN,Cs,O,OF,CAcc); gen_decode_objectfields(_,[],_,_,CAcc) -> CAcc. % gen_decode_objectfields(Erules,Class,ObjName,[{FieldName,Type}|Rest],ConstrAcc) -> % Fields = Class#objectclass.fields, % MaybeConstr = % case is_typefield(Fields,FieldName) of % true -> % Def = Type#typedef.typespec, % emit({"'dec_",ObjName,"'(",{asis,FieldName}, % ", Bytes, TagIn, RestPrimFieldName) ->",nl}), % OTag = Def#type.tag, % Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], % Prop = % case get_optionalityspec(Fields,FieldName) of % 'OPTIONAL' -> opt_or_default; % {'DEFAULT',_} -> opt_or_default; % _ -> mandatory % end, % CAcc = % case Type#typedef.name of % {primitive,bif} -> % gen_dec_prim(Erules,Def,"Bytes",Tag,"TagIn",no_length, % ?PRIMITIVE,Prop), % []; % {constructed,bif} -> % emit({" 'dec_",ObjName,'_',FieldName,"'(Bytes,", % {asis,Prop},", TagIn ++ ",{asis,Tag},")"}), % [{['dec_',ObjName,'_',FieldName],Def}]; % {ExtMod,TypeName} -> % emit({" '",ExtMod,"':'dec_",TypeName,"'(Bytes, ", % {asis,Prop},", TagIn ++ ",{asis,Tag},")"}), % []; % TypeName -> % emit({" 'dec_",TypeName,"'(Bytes, ",{asis,Prop}, % ", TagIn ++ ",{asis,Tag},")"}), % [] % end, % case more_genfields(Fields,Rest) of % true -> % emit({";",nl}); % false -> % emit({".",nl}) % end, % CAcc; % {false,objectfield} -> % emit({"'dec_",ObjName,"'(",{asis,FieldName}, % ", Bytes, TagIn, [H|T]) ->",nl}), % case Type#typedef.name of % {ExtMod,TypeName} -> % emit({indent(3),"'",ExtMod,"':'dec_",TypeName, % "'(H, Bytes, TagIn, T)"}); % TypeName -> % emit({indent(3),"'dec_",TypeName, % "'(H, Bytes, TagIn, T)"}) % end, % case more_genfields(Fields,Rest) of % true -> % emit({";",nl}); % false -> % emit({".",nl}) % end, % []; % {false,_} -> % [] % end, % gen_decode_objectfields(Erules,Class,ObjName,Rest,MaybeConstr ++ ConstrAcc); % gen_decode_objectfields(Erules,C,O,[H|T],CAcc) -> % gen_decode_objectfields(Erules,C,O,T,CAcc); % gen_decode_objectfields(_,_,_,[],CAcc) -> % CAcc. gen_decode_constr_type(Erules,[{Name,Def}|Rest]) -> %% emit({Name,"(Bytes, OptOrMand) ->",nl}), %% emit({" ",Name,"(Bytes, OptOrMand, []).",nl,nl}), emit({Name,"(Bytes, OptOrMand, TagIn) ->",nl}), InnerType = asn1ct_gen:get_inner(Def#type.def), asn1ct_gen:gen_decode_constructed(ber,Name,InnerType,Def), gen_decode_constr_type(Erules,Rest); gen_decode_constr_type(Erules,[TypeDef|Rest]) when record(TypeDef,typedef) -> case is_already_generated(dec,TypeDef#typedef.name) of true -> ok; _ -> gen_decode(Erules,TypeDef) end, gen_decode_constr_type(Erules,Rest); gen_decode_constr_type(_,[]) -> ok. gen_decode_field_call(ObjName,FieldName,Bytes,Type) -> Def = Type#typedef.typespec, OTag = Def#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case Type#typedef.name of {primitive,bif} -> %%tag should be the primitive tag gen_dec_prim(ber,Def,Bytes,Tag,"TagIn",no_length, ?PRIMITIVE,opt_or_default), []; {constructed,bif} -> emit({" 'dec_",ObjName,'_',FieldName, "'(",Bytes,",opt_or_default, TagIn ++ ",{asis,Tag},")"}), [Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}]; {ExtMod,TypeName} -> emit({" '",ExtMod,"':'dec_",TypeName, "'(",Bytes,", opt_or_default,TagIn ++ ",{asis,Tag},")"}), []; TypeName -> emit({" 'dec_",TypeName,"'(",Bytes, ", opt_or_default,TagIn ++ ",{asis,Tag},")"}), [] end. gen_decode_default_call(ClassName,FieldName,Bytes,Type) -> CurrentMod = get(currmod), InnerType = asn1ct_gen:get_inner(Type#type.def), OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case asn1ct_gen:type(InnerType) of {constructed,bif} -> emit([" 'dec_",ClassName,'_',FieldName,"'(",Bytes, ",opt_or_default, TagIn ++ ",{asis,Tag},")"]), [#typedef{name=list_to_atom(lists:concat([ClassName,'_',FieldName])), typespec=Type}]; {primitive,bif} -> gen_dec_prim(ber,Type,Bytes,Tag,"TagIn",no_length, ?PRIMITIVE,opt_or_default), []; #'Externaltypereference'{module=CurrentMod,type=Etype} -> emit([" 'dec_",Etype,"'(",Bytes, " ,opt_or_default, TagIn ++ ",{asis,Tag},")",nl]), []; #'Externaltypereference'{module=Emod,type=Etype} -> emit([" '",Emod,"':'dec_",Etype,"'(",Bytes, ", opt_or_defualt, TagIn ++ ",{asis,Tag},")",nl]), [] end. more_genfields([]) -> false; more_genfields([Field|Fields]) -> case element(1,Field) of typefield -> true; objectfield -> true; _ -> more_genfields(Fields) end. %% Object Set code generating for encoding and decoding %% ---------------------------------------------------- gen_objectset_code(Erules,ObjSet) -> ObjSetName = ObjSet#typedef.name, Def = ObjSet#typedef.typespec, % {ClassName,ClassDef} = Def#'ObjectSet'.class, #'Externaltypereference'{module=ClassModule, type=ClassName} = Def#'ObjectSet'.class, ClassDef = asn1_db:dbget(ClassModule,ClassName), UniqueFName = Def#'ObjectSet'.uniquefname, Set = Def#'ObjectSet'.set, emit({nl,nl,nl,"%%================================"}), emit({nl,"%% ",ObjSetName}), emit({nl,"%%================================",nl}), case ClassName of {_Module,ExtClassName} -> gen_objset_code(Erules,ObjSetName,UniqueFName,Set, ExtClassName,ClassDef); _ -> gen_objset_code(Erules,ObjSetName,UniqueFName,Set, ClassName,ClassDef) end, emit(nl). gen_objset_code(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassDef)-> ClassFields = (ClassDef#classdef.typespec)#objectclass.fields, InternalFuncs=gen_objset_enc(ObjSetName,UniqueFName,Set,ClassName,ClassFields,1,[]), gen_objset_dec(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassFields,1), gen_internal_funcs(Erules,InternalFuncs). %% gen_objset_enc iterates over the objects of the object set gen_objset_enc(_,{unique,undefined},_,_,_,_,_) -> %% There is no unique field in the class of this object set %% don't bother about the constraint []; gen_objset_enc(ObjSName,UniqueName, [{ObjName,Val,Fields},T|Rest],ClName,ClFields,NthObj,Acc)-> emit({"'getenc_",ObjSName,"'(",{asis,UniqueName},",",{asis,Val},") ->",nl}), {InternalFunc,NewNthObj}= case ObjName of no_name -> gen_inlined_enc_funs(Fields,ClFields,ObjSName,NthObj); _Other -> emit({" fun 'enc_",ObjName,"'/4"}), {[],NthObj} end, emit({";",nl}), gen_objset_enc(ObjSName,UniqueName,[T|Rest],ClName,ClFields, NewNthObj,InternalFunc ++ Acc); gen_objset_enc(ObjSetName,UniqueName, [{ObjName,Val,Fields}],_ClName,ClFields,NthObj,Acc) -> emit({"'getenc_",ObjSetName,"'(",{asis,UniqueName},",",{asis,Val},") ->",nl}), {InternalFunc,_}= case ObjName of no_name -> gen_inlined_enc_funs(Fields,ClFields,ObjSetName,NthObj); _Other -> emit({" fun 'enc_",ObjName,"'/4"}), {[],NthObj} end, emit({".",nl,nl}), InternalFunc ++ Acc; %% See X.681 Annex E for the following case gen_objset_enc(ObjSetName,_UniqueName,['EXTENSIONMARK'], _ClName,_ClFields,_NthObj,Acc) -> emit({"'getenc_",ObjSetName,"'(_, _) ->",nl}), emit({indent(3),"fun(_Attr, Val, _TagIn, _RestPrimFieldName) ->",nl}), emit({indent(6),"Len = case Val of",nl,indent(9), "Bin when binary(Bin) -> size(Bin);",nl,indent(9), "_ -> length(Val)",nl,indent(6),"end,"}), emit({indent(6),"{Val,Len}",nl}), emit({indent(3),"end.",nl,nl}), Acc; gen_objset_enc(_,_,[],_,_,_,Acc) -> Acc. %% gen_inlined_enc_funs for each object iterates over all fields of a %% class, and for each typefield it checks if the object has that %% field and emits the proper code. gen_inlined_enc_funs(Fields,[{typefield,Name,_}|Rest],ObjSetName, NthObj) -> InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]), case lists:keysearch(Name,1,Fields) of {value,{_,Type}} when record(Type,type) -> emit({indent(3),"fun(Type, Val, TagIn, _RestPrimFieldName) ->",nl, indent(6),"case Type of",nl}), {Ret,N} = emit_inner_of_fun(Type,InternalDefFunName), gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+N,Ret); {value,{_,Type}} when record(Type,typedef) -> emit({indent(3),"fun(Type, Val, TagIn, _RestPrimFieldName) ->",nl, indent(6),"case Type of",nl}), emit({indent(9),{asis,Name}," ->",nl}), {Ret,N} = emit_inner_of_fun(Type,InternalDefFunName), gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+N,Ret); false -> gen_inlined_enc_funs(Fields,Rest,ObjSetName,NthObj) end; gen_inlined_enc_funs(Fields,[_H|Rest],ObjSetName,NthObj) -> gen_inlined_enc_funs(Fields,Rest,ObjSetName,NthObj); gen_inlined_enc_funs(_,[],_,NthObj) -> {[],NthObj}. gen_inlined_enc_funs1(Fields,[{typefield,Name,_}|Rest],ObjSetName, NthObj,Acc) -> InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]), {Acc2,NAdd}= case lists:keysearch(Name,1,Fields) of {value,{_,Type}} when record(Type,type) -> emit({";",nl}), {Ret,N}=emit_inner_of_fun(Type,InternalDefFunName), {Ret++Acc,N}; {value,{_,Type}} when record(Type,typedef) -> emit({";",nl,indent(9),{asis,Name}," ->",nl}), {Ret,N}=emit_inner_of_fun(Type,InternalDefFunName), {Ret++Acc,N}; false -> {Acc,0} end, gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj+NAdd,Acc2); gen_inlined_enc_funs1(Fields,[_H|Rest],ObjSetName,NthObj,Acc)-> gen_inlined_enc_funs1(Fields,Rest,ObjSetName,NthObj,Acc); gen_inlined_enc_funs1(_,[],_,NthObj,Acc) -> emit({nl,indent(6),"end",nl}), emit({indent(3),"end"}), {Acc,NthObj}. emit_inner_of_fun(TDef = #typedef{name={ExtMod,Name},typespec=Type}, InternalDefFunName) -> OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case {ExtMod,Name} of {primitive,bif} -> emit(indent(12)), gen_encode_prim(ber,Type,["TagIn ++ ",{asis,Tag}],"Val"), {[],0}; {constructed,bif} -> emit([indent(12),"'enc_", InternalDefFunName,"'(Val,TagIn ++ ", {asis,Tag},")"]), {[TDef#typedef{name=InternalDefFunName}],1}; _ -> emit({indent(12),"'",ExtMod,"':'enc_",Name,"'(Val, TagIn ++ ", {asis,Tag},")"}), {[],0} end; emit_inner_of_fun(#typedef{name=Name,typespec=Type},_) -> OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], emit({indent(12),"'enc_",Name,"'(Val, TagIn ++ ",{asis,Tag},")"}), {[],0}; emit_inner_of_fun(Type,_) when record(Type,type) -> CurrMod = get(currmod), OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case Type#type.def of Def when atom(Def) -> emit({indent(9),Def," ->",nl,indent(12)}), gen_encode_prim(ber,Type,["TagIn ++ ",{asis,Tag}],"Val"); TRef when record(TRef,typereference) -> T = TRef#typereference.val, emit({indent(9),T," ->",nl,indent(12),"'enc_",T, "'(Val, TagIn ++ ",{asis,Tag},")"}); #'Externaltypereference'{module=CurrMod,type=T} -> emit({indent(9),T," ->",nl,indent(12),"'enc_",T, "'(Val, TagIn ++ ",{asis,Tag},")"}); #'Externaltypereference'{module=ExtMod,type=T} -> emit({indent(9),T," ->",nl,indent(12),ExtMod,":'enc_", T,"'(Val, TagIn ++ ",{asis,Tag},")"}) end, {[],0}. indent(N) -> lists:duplicate(N,32). % 32 = space gen_objset_dec(_,_,{unique,undefined},_,_,_,_) -> %% There is no unique field in the class of this object set %% don't bother about the constraint ok; gen_objset_dec(Erules,ObjSName,UniqueName,[{ObjName,Val,Fields},T|Rest], ClName,ClFields,NthObj)-> emit({"'getdec_",ObjSName,"'(",{asis,UniqueName},",",{asis,Val}, ") ->",nl}), NewNthObj= case ObjName of no_name -> gen_inlined_dec_funs(Erules,Fields,ClFields,ObjSName, NthObj); _Other -> emit({" fun 'dec_",ObjName,"'/4"}), NthObj end, emit({";",nl}), gen_objset_dec(Erules,ObjSName,UniqueName,[T|Rest],ClName,ClFields, NewNthObj); gen_objset_dec(Erules,ObjSetName,UniqueName,[{ObjName,Val,Fields}],_ClName, ClFields,NthObj) -> emit({"'getdec_",ObjSetName,"'(",{asis,UniqueName},",",{asis,Val},") ->",nl}), case ObjName of no_name -> gen_inlined_dec_funs(Erules,Fields,ClFields,ObjSetName, NthObj); _Other -> emit({" fun 'dec_",ObjName,"'/4"}) end, emit({".",nl,nl}); gen_objset_dec(_,ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,_ClFields, _NthObj) -> emit({"'getdec_",ObjSetName,"'(_, _) ->",nl}), emit({indent(3),"fun(_, Bytes, _, _) ->",nl}), emit({indent(6),"Len = case Bytes of",nl,indent(9), "Bin when binary(Bin) -> size(Bin);",nl,indent(9), "_ -> length(Bytes)",nl,indent(6),"end,"}), emit({indent(6),"{Bytes,[],Len}",nl}), emit({indent(3),"end.",nl,nl}), ok; gen_objset_dec(_,_,_,[],_,_,_) -> ok. gen_inlined_dec_funs(Erules,Fields,[{typefield,Name,Prop}|Rest], ObjSetName,NthObj) -> DecProp = case Prop of 'OPTIONAL' -> opt_or_default; {'DEFAULT',_} -> opt_or_default; _ -> mandatory end, InternalDefFunName = [NthObj,Name,ObjSetName], case lists:keysearch(Name,1,Fields) of {value,{_,Type}} when record(Type,type) -> emit({indent(3),"fun(Type, Bytes, TagIn, _RestPrimFieldName) ->", nl,indent(6),"case Type of",nl}), N=emit_inner_of_decfun(Erules,Type,DecProp,InternalDefFunName), gen_inlined_dec_funs1(Erules,Fields,Rest,ObjSetName,NthObj+N); {value,{_,Type}} when record(Type,typedef) -> emit({indent(3),"fun(Type, Bytes, TagIn, _RestPrimFieldName) ->", nl,indent(6),"case Type of",nl}), emit({indent(9),{asis,Name}," ->",nl}), N=emit_inner_of_decfun(Erules,Type,DecProp,InternalDefFunName), gen_inlined_dec_funs1(Erules,Fields,Rest,ObjSetName,NthObj+N); false -> gen_inlined_dec_funs(Erules,Fields,Rest,ObjSetName,NthObj) end; gen_inlined_dec_funs(Erules,Fields,[_H|Rest],ObjSetName,NthObj) -> gen_inlined_dec_funs(Erules,Fields,Rest,ObjSetName,NthObj); gen_inlined_dec_funs(_,_,[],_,NthObj) -> NthObj. gen_inlined_dec_funs1(Erules,Fields,[{typefield,Name,Prop}|Rest], ObjSetName,NthObj) -> DecProp = case Prop of 'OPTIONAL' -> opt_or_default; {'DEFAULT',_} -> opt_or_default; _ -> mandatory end, InternalDefFunName = [NthObj,Name,ObjSetName], N= case lists:keysearch(Name,1,Fields) of {value,{_,Type}} when record(Type,type) -> emit({";",nl}), emit_inner_of_decfun(Erules,Type,DecProp,InternalDefFunName); {value,{_,Type}} when record(Type,typedef) -> emit({";",nl,indent(9),{asis,Name}," ->",nl}), emit_inner_of_decfun(Erules,Type,DecProp,InternalDefFunName); false -> 0 end, gen_inlined_dec_funs1(Erules,Fields,Rest,ObjSetName,NthObj+N); gen_inlined_dec_funs1(Erules,Fields,[_H|Rest],ObjSetName,NthObj)-> gen_inlined_dec_funs1(Erules,Fields,Rest,ObjSetName,NthObj); gen_inlined_dec_funs1(_,_,[],_,NthObj) -> emit({nl,indent(6),"end",nl}), emit({indent(3),"end"}), NthObj. emit_inner_of_decfun(Erules,#typedef{name={ExtName,Name},typespec=Type}, Prop,InternalDefFunName) -> OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], case {ExtName,Name} of {primitive,bif} -> emit(indent(12)), gen_dec_prim(Erules,Type,"Bytes",Tag,"TagIn",no_length, ?PRIMITIVE,Prop), 0; {constructed,bif} -> emit({indent(12),"'dec_", asn1ct_gen:list2name(InternalDefFunName),"'(Bytes, ",Prop, ", TagIn ++ ",{asis,Tag},")"}), 1; _ -> emit({indent(12),"'",ExtName,"':'dec_",Name,"'(Bytes, ",Prop, ", TagIn ++ ",{asis,Tag},")"}), 0 end; emit_inner_of_decfun(_,#typedef{name=Name,typespec=Type},Prop,_) -> OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], emit({indent(12),"'dec_",Name,"'(Bytes, ",Prop,", TagIn ++ ", {asis,Tag},")"}), 0; emit_inner_of_decfun(Erules,Type,Prop,_) when record(Type,type) -> OTag = Type#type.tag, Tag = [X#tag{class=decode_class(X#tag.class)}|| X <- OTag], CurrMod = get(currmod), Def = Type#type.def, InnerType = asn1ct_gen:get_inner(Def), WhatKind = asn1ct_gen:type(InnerType), case WhatKind of {primitive,bif} -> emit({indent(9),Def," ->",nl,indent(12)}), gen_dec_prim(Erules,Type,"Bytes",Tag,"TagIn",no_length, ?PRIMITIVE,Prop); % TRef when record(TRef,typereference) -> % T = TRef#typereference.val, % emit({indent(9),T," ->",nl,indent(12),"'dec_",T,"'(Val)"}); #'Externaltypereference'{module=CurrMod,type=T} -> emit({indent(9),T," ->",nl,indent(12),"'dec_",T, "'(Bytes, ",Prop,", TagIn ++ ",{asis,Tag},")"}); #'Externaltypereference'{module=ExtMod,type=T} -> emit({indent(9),T," ->",nl,indent(12),ExtMod,":'dec_", T,"'(Bytes, ",Prop,", TagIn ++ ",{asis,Tag},")"}) end, 0. gen_internal_funcs(_,[]) -> ok; gen_internal_funcs(Erules,[TypeDef|Rest]) -> gen_encode_user(Erules,TypeDef), emit({"'dec_",TypeDef#typedef.name,"'(Bytes, ", unused_optormand_var("OptOrMand",(TypeDef#typedef.typespec)#type.def),", TagIn) ->",nl}), gen_decode_user(Erules,TypeDef), gen_internal_funcs(Erules,Rest). dbdec(Type) -> demit({"io:format(\"decoding: ",{asis,Type},"~w~n\",[Bytes]),",nl}). decode_class('UNIVERSAL') -> ?UNIVERSAL; decode_class('APPLICATION') -> ?APPLICATION; decode_class('CONTEXT') -> ?CONTEXT; decode_class('PRIVATE') -> ?PRIVATE. decode_type('BOOLEAN') -> 1; decode_type('INTEGER') -> 2; decode_type('BIT STRING') -> 3; decode_type('OCTET STRING') -> 4; decode_type('NULL') -> 5; decode_type('OBJECT IDENTIFIER') -> 6; decode_type('OBJECT DESCRIPTOR') -> 7; decode_type('EXTERNAL') -> 8; decode_type('REAL') -> 9; decode_type('ENUMERATED') -> 10; decode_type('EMBEDDED_PDV') -> 11; decode_type('SEQUENCE') -> 16; decode_type('SEQUENCE OF') -> 16; decode_type('SET') -> 17; decode_type('SET OF') -> 17; decode_type('NumericString') -> 18; decode_type('PrintableString') -> 19; decode_type('TeletexString') -> 20; decode_type('VideotexString') -> 21; decode_type('IA5String') -> 22; decode_type('UTCTime') -> 23; decode_type('GeneralizedTime') -> 24; decode_type('GraphicString') -> 25; decode_type('VisibleString') -> 26; decode_type('GeneralString') -> 27; decode_type('UniversalString') -> 28; decode_type('BMPString') -> 30; decode_type('CHOICE') -> 'CHOICE'; % choice gets the tag from the actual alternative decode_type(Else) -> exit({error,{asn1,{unrecognized_type,Else}}}). add_removed_bytes() -> asn1ct_name:delete(rb), add_removed_bytes(asn1ct_name:all(rb)). add_removed_bytes([H,T1|T]) -> emit({{var,H},"+"}), add_removed_bytes([T1|T]); add_removed_bytes([H|T]) -> emit({{var,H}}), add_removed_bytes(T); add_removed_bytes([]) -> true. mkfuncname(WhatKind,DecOrEnc) -> case WhatKind of #'Externaltypereference'{module=Mod,type=EType} -> CurrMod = get(currmod), case CurrMod of Mod -> lists:concat(["'",DecOrEnc,"_",EType,"'"]); _ -> % io:format("CurrMod: ~p, Mod: ~p~n",[CurrMod,Mod]), lists:concat(["'",Mod,"':'",DecOrEnc,"_",EType,"'"]) end; #'typereference'{val=EType} -> lists:concat(["'",DecOrEnc,"_",EType,"'"]); 'ASN1_OPEN_TYPE' -> lists:concat(["'",DecOrEnc,"_",WhatKind,"'"]) end. optionals(L) -> optionals(L,[],1). optionals([{'EXTENSIONMARK',_,_}|Rest],Acc,Pos) -> optionals(Rest,Acc,Pos); % optionals in extension are currently not handled optionals([#'ComponentType'{name=Name,prop='OPTIONAL'}|Rest],Acc,Pos) -> optionals(Rest,[{Name,Pos}|Acc],Pos+1); optionals([#'ComponentType'{name=Name,prop={'DEFAULT',_}}|Rest],Acc,Pos) -> optionals(Rest,[{Name,Pos}|Acc],Pos+1); optionals([#'ComponentType'{}|Rest],Acc,Pos) -> optionals(Rest,Acc,Pos+1); optionals([],Acc,_) -> lists:reverse(Acc). get_constraint(C,Key) -> case lists:keysearch(Key,1,C) of false -> no; {value,{_,V}} -> V end. %% if the original option was ber and it has been wrapped to ber_bin %% turn it back to ber re_wrap_erule(ber_bin) -> case get(encoding_options) of Options when list(Options) -> case lists:member(ber,Options) of true -> ber; _ -> ber_bin end; _ -> ber_bin end; re_wrap_erule(Erule) -> Erule. is_already_generated(Operation,Name) -> case get(class_default_type) of undefined -> put(class_default_type,[{Operation,Name}]), false; GeneratedList -> case lists:member({Operation,Name},GeneratedList) of true -> true; false -> put(class_default_type,[{Operation,Name}|GeneratedList]), false end end. get_class_fields(#classdef{typespec=ObjClass}) -> ObjClass#objectclass.fields; get_class_fields(#objectclass{fields=Fields}) -> Fields; get_class_fields(_) -> []. get_object_field(Name,ObjectFields) -> case lists:keysearch(Name,1,ObjectFields) of {value,Field} -> Field; false -> false end.