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-rw-r--r--lib/asn1/src/asn1ct_gen_check.erl271
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diff --git a/lib/asn1/src/asn1ct_gen_check.erl b/lib/asn1/src/asn1ct_gen_check.erl
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+++ b/lib/asn1/src/asn1ct_gen_check.erl
@@ -0,0 +1,271 @@
+%% vim: tabstop=8:shiftwidth=4
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2014. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+
+-module(asn1ct_gen_check).
+-export([emit/3]).
+
+-import(asn1ct_gen, [emit/1]).
+-include("asn1_records.hrl").
+
+emit(Type, Default, Value) ->
+ Key = {Type,Default},
+ Gen = fun(Fd, Name) ->
+ file:write(Fd, gen(Name, Type, Default))
+ end,
+ emit(" case "),
+ asn1ct_func:call_gen("is_default_", Key, Gen, [Value]),
+ emit([" of",nl,
+ "true -> {[],0};",nl,
+ "false ->",nl]).
+
+gen(Name, #type{def=T}, Default) ->
+ NameStr = atom_to_list(Name),
+ [NameStr,"(asn1_DEFAULT) ->\n",
+ "true;\n"|case do_gen(T, Default) of
+ {literal,Literal} ->
+ [NameStr,"(",term2str(Literal),") ->\n","true;\n",
+ NameStr,"(_) ->\n","false.\n\n"];
+ {exception,Func,Args} ->
+ [NameStr,"(Value) ->\n",
+ "try ",Func,"(Value",arg2str(Args),") of\n",
+ "_ -> true\n"
+ "catch throw:false -> false\n"
+ "end.\n\n"]
+ end].
+
+do_gen(_, asn1_NOVALUE) ->
+ {literal,asn1_NOVALUE};
+do_gen(#'Externaltypereference'{module=M,type=T}, Default) ->
+ #typedef{typespec=#type{def=Td}} = asn1_db:dbget(M, T),
+ do_gen(Td, Default);
+do_gen('BOOLEAN', Default) ->
+ {literal,Default};
+do_gen({'BIT STRING',[]}, Default) ->
+ true = is_bitstring(Default), %Assertion.
+ case asn1ct:use_legacy_types() of
+ false ->
+ {literal,Default};
+ true ->
+ {exception,need(check_legacy_bitstring, 2),[Default]}
+ end;
+do_gen({'BIT STRING',[_|_]=NBL}, Default) ->
+ do_named_bitstring(NBL, Default);
+do_gen({'ENUMERATED',_}, Default) ->
+ {literal,Default};
+do_gen('INTEGER', Default) ->
+ {literal,Default};
+do_gen({'INTEGER',NNL}, Default) ->
+ {exception,need(check_int, 3),[Default,NNL]};
+do_gen('NULL', Default) ->
+ {literal,Default};
+do_gen('OCTET STRING', Default) ->
+ true = is_binary(Default), %Assertion.
+ case asn1ct:use_legacy_types() of
+ false ->
+ {literal,Default};
+ true ->
+ {exception,need(check_octetstring, 2),[Default]}
+ end;
+do_gen('OBJECT IDENTIFIER', Default0) ->
+ Default = pre_process_oid(Default0),
+ {exception,need(check_objectidentifier, 2),[Default]};
+do_gen({'CHOICE',Cs}, Default) ->
+ {Tag,Value} = Default,
+ [Type] = [Type || #'ComponentType'{name=T,typespec=Type} <- Cs,
+ T =:= Tag],
+ case do_gen(Type#type.def, Value) of
+ {literal,Lit} ->
+ {literal,{Tag,Lit}};
+ {exception,Func0,Args} ->
+ Key = {Tag,Func0,Args},
+ Gen = fun(Fd, Name) ->
+ S = gen_choice(Name, Tag, Func0, Args),
+ ok = file:write(Fd, S)
+ end,
+ Func = asn1ct_func:call_gen("is_default_choice", Key, Gen),
+ {exception,atom_to_list(Func),[]}
+ end;
+do_gen(#'SEQUENCE'{components=Cs}, Default) ->
+ do_seq_set(Cs, Default);
+do_gen({'SEQUENCE OF',Type}, Default) ->
+ do_sof(Type, Default);
+do_gen(#'SET'{components=Cs}, Default) ->
+ do_seq_set(Cs, Default);
+do_gen({'SET OF',Type}, Default) ->
+ do_sof(Type, Default);
+do_gen(Type, Default) ->
+ case asn1ct_gen:unify_if_string(Type) of
+ restrictedstring ->
+ {exception,need(check_restrictedstring, 2),[Default]};
+ _ ->
+ %% Open type. Do our best.
+ {literal,Default}
+ end.
+
+do_named_bitstring(NBL, Default0) when is_list(Default0) ->
+ Default = lists:sort(Default0),
+ Bs = asn1ct_gen:named_bitstring_value(Default, NBL),
+ Func = case asn1ct:use_legacy_types() of
+ false -> check_named_bitstring;
+ true -> check_legacy_named_bitstring
+ end,
+ {exception,need(Func, 4),[Default,Bs,bit_size(Bs)]};
+do_named_bitstring(_, Default) when is_bitstring(Default) ->
+ Func = case asn1ct:use_legacy_types() of
+ false -> check_named_bitstring;
+ true -> check_legacy_named_bitstring
+ end,
+ {exception,need(Func, 3),[Default,bit_size(Default)]}.
+
+do_seq_set(Cs0, Default) ->
+ Tag = element(1, Default),
+ Cs1 = [T || #'ComponentType'{typespec=T} <- Cs0],
+ Cs = components(Cs1, tl(tuple_to_list(Default))),
+ case are_all_literals(Cs) of
+ true ->
+ Literal = list_to_tuple([Tag|[L || {literal,L} <- Cs]]),
+ {literal,Literal};
+ false ->
+ Key = {Cs,Default},
+ Gen = fun(Fd, Name) ->
+ S = gen_components(Name, Tag, Cs),
+ ok = file:write(Fd, S)
+ end,
+ Func = asn1ct_func:call_gen("is_default_cs_", Key, Gen),
+ {exception,atom_to_list(Func),[]}
+ end.
+
+do_sof(Type, Default0) ->
+ Default = lists:sort(Default0),
+ Cs0 = lists:duplicate(length(Default), Type),
+ Cs = components(Cs0, Default),
+ case are_all_literals(Cs) of
+ true ->
+ Literal = [Lit || {literal,Lit} <- Cs],
+ {exception,need(check_literal_sof, 2),[Literal]};
+ false ->
+ Key = Cs,
+ Gen = fun(Fd, Name) ->
+ S = gen_sof(Name, Cs),
+ ok = file:write(Fd, S)
+ end,
+ Func = asn1ct_func:call_gen("is_default_sof", Key, Gen),
+ {exception,atom_to_list(Func),[]}
+ end.
+
+are_all_literals([{literal,_}|T]) ->
+ are_all_literals(T);
+are_all_literals([_|_]) ->
+ false;
+are_all_literals([]) -> true.
+
+gen_components(Name, Tag, Cs) ->
+ [atom_to_list(Name),"(Value) ->\n",
+ "case Value of\n",
+ "{",term2str(Tag)|gen_cs_1(Cs, 1, [])].
+
+gen_cs_1([{literal,Lit}|T], I, Acc) ->
+ [",\n",term2str(Lit)|gen_cs_1(T, I, Acc)];
+gen_cs_1([H|T], I, Acc) ->
+ Var = "E"++integer_to_list(I),
+ [",\n",Var|gen_cs_1(T, I+1, [{Var,H}|Acc])];
+gen_cs_1([], _, Acc) ->
+ ["} ->\n"|gen_cs_2(Acc, "")].
+
+gen_cs_2([{Var,{exception,Func,Args}}|T], Sep) ->
+ [Sep,Func,"(",Var,arg2str(Args),")"|gen_cs_2(T, ",\n")];
+gen_cs_2([], _) ->
+ [";\n",
+ "_ ->\n"
+ "throw(false)\n"
+ "end.\n"].
+
+gen_sof(Name, Cs) ->
+ [atom_to_list(Name),"(Value) ->\n",
+ "case length(Value) of\n",
+ integer_to_list(length(Cs))," -> ok;\n"
+ "_ -> throw(false)\n"
+ "end,\n"
+ "T0 = lists:sort(Value)"|gen_sof_1(Cs, 1)].
+
+gen_sof_1([{exception,Func,Args}|Cs], I) ->
+ NumStr = integer_to_list(I),
+ H = "H" ++ NumStr,
+ T = "T" ++ NumStr,
+ Prev = "T" ++ integer_to_list(I-1),
+ [",\n",
+ "[",H,case Cs of
+ [] -> [];
+ [_|_] -> ["|",T]
+ end,"] = ",Prev,",\n",
+ Func,"(",H,arg2str(Args),")"|gen_sof_1(Cs, I+1)];
+gen_sof_1([], _) ->
+ ".\n".
+
+components([#type{def=Def}|Ts], [V|Vs]) ->
+ [do_gen(Def, V)|components(Ts, Vs)];
+components([], []) -> [].
+
+gen_choice(Name, Tag, Func, Args) ->
+ NameStr = atom_to_list(Name),
+ [NameStr,"({",term2str(Tag),",Value}) ->\n"
+ " ",Func,"(Value",arg2str(Args),");\n",
+ NameStr,"(_) ->\n"
+ " throw(false).\n"].
+
+pre_process_oid(Oid) ->
+ Reserved = reserved_oid(),
+ pre_process_oid(tuple_to_list(Oid), Reserved, []).
+
+pre_process_oid([H|T]=Tail, Res0, Acc) ->
+ case lists:keyfind(H, 2, Res0) of
+ false ->
+ {lists:reverse(Acc),Tail};
+ {Names0,H,Res} ->
+ Names = case is_list(Names0) of
+ false -> [Names0];
+ true -> Names0
+ end,
+ Keys = [H|Names],
+ pre_process_oid(T, Res, [Keys|Acc])
+ end.
+
+reserved_oid() ->
+ [{['itu-t',ccitt],0,
+ [{recommendation,0,[]},
+ {question,1,[]},
+ {administration,2,[]},
+ {'network-operator',3,[]},
+ {'identified-organization',4,[]}]},
+ {iso,1,[{standard,0,[]},
+ {'member-body',2,[]},
+ {'identified-organization',3,[]}]},
+ {['joint-iso-itu-t','joint-iso-ccitt'],2,[]}].
+
+arg2str(Args) ->
+ [", "++term2str(Arg) || Arg <- Args].
+
+term2str(T) ->
+ io_lib:format("~w", [T]).
+
+need(F, A) ->
+ asn1ct_func:need({check,F,A}),
+ atom_to_list(F).
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