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source: src/SymTab/Demangle.cc @ f7496c5

ADTast-experimentalenumpthread-emulationqualifiedEnum

Last change on this file since f7496c5 was b66d14a, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago
add new type kinds DStype and ALtype
Property mode set to `100644`
File size: 20.1 KB

Rev	Line
[d1e0979]	1	//
	2	// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
	3	//
	4	// The contents of this file are covered under the licence agreement in the
	5	// file "LICENCE" distributed with Cforall.
	6	//
	7	// Demangler.cc --
	8	//
	9	// Author : Rob Schluntz
	10	// Created On : Thu Jul 19 12:52:41 2018
[4071778]	11	// Last Modified By : Peter A. Buhr
[b66d14a]	12	// Last Modified On : Mon Jan 11 21:28:27 2021
	13	// Update Count : 11
[d1e0979]	14	//
	15
	16	#include <algorithm>
	17	#include <sstream>
	18
	19	#include "CodeGen/GenType.h"
	20	#include "Common/PassVisitor.h"
[8abca06]	21	#include "Common/utility.h" // isPrefix
[d1e0979]	22	#include "Mangler.h"
	23	#include "SynTree/Type.h"
	24	#include "SynTree/Declaration.h"
	25
[04c77791]	26	#define DEBUG
[d1e0979]	27	#ifdef DEBUG
	28	#define PRINT(x) x
	29	#else
	30	#define PRINT(x) {}
	31	#endif
	32
	33	namespace {
	34	struct GenType : public WithVisitorRef<GenType>, public WithShortCircuiting {
	35	std::string typeString;
	36	GenType( const std::string &typeString );
	37
	38	void previsit( BaseSyntaxNode * );
	39	void postvisit( BaseSyntaxNode * );
	40
	41	void postvisit( FunctionType * funcType );
	42	void postvisit( VoidType * voidType );
	43	void postvisit( BasicType * basicType );
	44	void postvisit( PointerType * pointerType );
	45	void postvisit( ArrayType * arrayType );
	46	void postvisit( ReferenceType * refType );
	47	void postvisit( StructInstType * structInst );
	48	void postvisit( UnionInstType * unionInst );
	49	void postvisit( EnumInstType * enumInst );
	50	void postvisit( TypeInstType * typeInst );
	51	void postvisit( TupleType * tupleType );
	52	void postvisit( VarArgsType * varArgsType );
	53	void postvisit( ZeroType * zeroType );
	54	void postvisit( OneType * oneType );
	55	void postvisit( GlobalScopeType * globalType );
	56	void postvisit( QualifiedType * qualType );
	57
	58	private:
	59	void handleQualifiers( Type *type );
	60	std::string handleGeneric( ReferenceToType * refType );
	61	void genArray( const Type::Qualifiers &qualifiers, Type base, Expression dimension, bool isVarLen, bool isStatic );
	62	};
	63
	64	std::string genDemangleType( Type * type, const std::string & baseString ) {
	65	PassVisitor<GenType> gt( baseString );
	66	assert( type );
	67	type->accept( gt );
	68	return gt.pass.typeString;
	69	}
	70
	71	GenType::GenType( const std::string &typeString ) : typeString( typeString ) {}
	72
	73	// *** BaseSyntaxNode
	74	void GenType::previsit( BaseSyntaxNode * ) {
	75	// turn off automatic recursion for all nodes, to allow each visitor to
	76	// precisely control the order in which its children are visited.
	77	visit_children = false;
	78	}
	79
	80	void GenType::postvisit( BaseSyntaxNode * node ) {
	81	std::stringstream ss;
	82	node->print( ss );
	83	assertf( false, "Unhandled node reached in GenType: %s", ss.str().c_str() );
	84	}
	85
	86	void GenType::postvisit( VoidType * voidType ) {
	87	typeString = "void " + typeString;
	88	handleQualifiers( voidType );
	89	}
	90
	91	void GenType::postvisit( BasicType * basicType ) {
	92	BasicType::Kind kind = basicType->kind;
	93	assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES );
	94	typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString;
	95	handleQualifiers( basicType );
	96	}
	97
	98	void GenType::genArray( const Type::Qualifiers & qualifiers, Type * base, Expression *dimension, bool isVarLen, bool ) {
	99	std::ostringstream os;
	100	if ( typeString != "" ) {
	101	if ( typeString[ 0 ] == '*' ) {
	102	os << "(" << typeString << ")";
	103	} else {
	104	os << typeString;
	105	} // if
	106	} // if
	107	os << "[";
	108
	109	if ( qualifiers.is_const ) {
	110	os << "const ";
	111	} // if
	112	if ( qualifiers.is_volatile ) {
	113	os << "volatile ";
	114	} // if
	115	if ( qualifiers.is_restrict ) {
	116	os << "__restrict ";
	117	} // if
	118	if ( qualifiers.is_atomic ) {
	119	os << "_Atomic ";
	120	} // if
	121	if ( dimension != 0 ) {
	122	// TODO: ???
	123	// PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks );
	124	// dimension->accept( cg );
	125	} else if ( isVarLen ) {
	126	// no dimension expression on a VLA means it came in with the * token
	127	os << "*";
	128	} // if
	129	os << "]";
	130
	131	typeString = os.str();
	132
	133	base->accept( *visitor );
	134	}
	135
	136	void GenType::postvisit( PointerType * pointerType ) {
	137	assert( pointerType->base != 0);
	138	if ( pointerType->get_isStatic() \|\| pointerType->get_isVarLen() \|\| pointerType->dimension ) {
	139	assert(false);
	140	genArray( pointerType->get_qualifiers(), pointerType->base, pointerType->dimension, pointerType->get_isVarLen(), pointerType->get_isStatic() );
	141	} else {
	142	handleQualifiers( pointerType );
	143	if ( typeString[ 0 ] == '?' ) {
	144	typeString = "* " + typeString;
	145	} else {
	146	typeString = "*" + typeString;
	147	} // if
	148	pointerType->base->accept( *visitor );
	149	} // if
	150	}
	151
	152	void GenType::postvisit( ArrayType * arrayType ) {
	153	genArray( arrayType->get_qualifiers(), arrayType->base, arrayType->dimension, arrayType->get_isVarLen(), arrayType->get_isStatic() );
	154	}
	155
	156	void GenType::postvisit( ReferenceType * refType ) {
	157	assert( false );
	158	assert( refType->base != 0);
	159	handleQualifiers( refType );
	160	typeString = "&" + typeString;
	161	refType->base->accept( *visitor );
	162	}
	163
	164	void GenType::postvisit( FunctionType * funcType ) {
	165	std::ostringstream os;
	166
	167	if ( typeString != "" ) {
	168	if ( typeString[0] == '*' ) {
	169	os << "(" << typeString << ")";
	170	} else {
	171	os << typeString;
	172	} // if
	173	} // if
	174
	175	/*********** parameters *************/
	176	const std::list<DeclarationWithType *> &pars = funcType->parameters;
	177
	178	if ( pars.empty() ) {
	179	if ( funcType->get_isVarArgs() ) {
	180	os << "()";
	181	} else {
	182	os << "(void)";
	183	} // if
	184	} else {
	185	os << "(" ;
	186
	187	unsigned int i = 0;
	188	for (DeclarationWithType * p : pars) {
	189	os << genDemangleType( p->get_type(), "" );
	190	if (++i != pars.size()) os << ", ";
	191	}
	192
	193	if ( funcType->get_isVarArgs() ) {
	194	os << ", ...";
	195	} // if
	196	os << ")";
	197	} // if
	198
	199	typeString = os.str();
	200
	201	if ( funcType->returnVals.size() == 0 ) {
	202	typeString += ": void";
	203	} else {
	204	typeString += ": " + genDemangleType(funcType->returnVals.front()->get_type(), "");
	205	} // if
	206
	207	// add forall
	208	if( ! funcType->forall.empty() ) {
	209	std::ostringstream os;
	210	os << "forall(";
	211	unsigned int i = 0;
	212	for ( auto td : funcType->forall ) {
	213	os << td->typeString() << " " << td->name;
	214	if (! td->assertions.empty()) {
	215	os << " \| { ";
	216	unsigned int j = 0;
	217	for (DeclarationWithType * assert : td->assertions) {
	218	os << genDemangleType(assert->get_type(), assert->name);
	219	if (++j != td->assertions.size()) os << ", ";
	220	}
	221	os << "}";
	222	}
	223	if (++i != funcType->forall.size()) os << ", ";
	224	}
	225	os << ")";
	226	typeString = typeString + " -> " + os.str();
	227	}
	228	}
	229
	230	std::string GenType::handleGeneric( ReferenceToType * refType ) {
	231	if ( ! refType->parameters.empty() ) {
	232	std::ostringstream os;
	233	// TODO: ???
	234	// PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks );
	235	os << "(";
	236	// cg.pass.genCommaList( refType->parameters.begin(), refType->parameters.end() );
	237	os << ") ";
	238	return os.str();
	239	}
	240	return "";
	241	}
	242
	243	void GenType::postvisit( StructInstType * structInst ) {
	244	typeString = "struct " + structInst->name + handleGeneric( structInst ) + " " + typeString;
	245	handleQualifiers( structInst );
	246	}
	247
	248	void GenType::postvisit( UnionInstType * unionInst ) {
	249	typeString = "union " + unionInst->name + handleGeneric( unionInst ) + " " + typeString;
	250	handleQualifiers( unionInst );
	251	}
	252
	253	void GenType::postvisit( EnumInstType * enumInst ) {
	254	typeString = "enum " + enumInst->name + " " + typeString;
	255	handleQualifiers( enumInst );
	256	}
	257
	258	void GenType::postvisit( TypeInstType * typeInst ) {
	259	typeString = typeInst->name + " " + typeString;
	260	handleQualifiers( typeInst );
	261	}
	262
	263	void GenType::postvisit( TupleType * tupleType ) {
	264	unsigned int i = 0;
	265	std::ostringstream os;
	266	os << "[";
	267	for ( Type * t : *tupleType ) {
	268	i++;
	269	os << genDemangleType( t, "" ) << (i == tupleType->size() ? "" : ", ");
	270	}
	271	os << "] ";
	272	typeString = os.str() + typeString;
	273	}
	274
	275	void GenType::postvisit( VarArgsType * varArgsType ) {
	276	typeString = "__builtin_va_list " + typeString;
	277	handleQualifiers( varArgsType );
	278	}
	279
	280	void GenType::postvisit( ZeroType * zeroType ) {
	281	// ideally these wouldn't hit codegen at all, but should be safe to make them ints
	282	typeString = "zero_t " + typeString;
	283	handleQualifiers( zeroType );
	284	}
	285
	286	void GenType::postvisit( OneType * oneType ) {
	287	// ideally these wouldn't hit codegen at all, but should be safe to make them ints
	288	typeString = "one_t " + typeString;
	289	handleQualifiers( oneType );
	290	}
	291
	292	void GenType::postvisit( GlobalScopeType * globalType ) {
	293	handleQualifiers( globalType );
	294	}
	295
	296	void GenType::postvisit( QualifiedType * qualType ) {
	297	std::ostringstream os;
	298	os << genDemangleType( qualType->parent, "" ) << "." << genDemangleType( qualType->child, "" ) << typeString;
	299	typeString = os.str();
	300	handleQualifiers( qualType );
	301	}
	302
	303	void GenType::handleQualifiers( Type * type ) {
	304	if ( type->get_const() ) {
	305	typeString = "const " + typeString;
	306	} // if
	307	if ( type->get_volatile() ) {
	308	typeString = "volatile " + typeString;
	309	} // if
	310	if ( type->get_restrict() ) {
	311	typeString = "__restrict " + typeString;
	312	} // if
	313	if ( type->get_atomic() ) {
	314	typeString = "_Atomic " + typeString;
	315	} // if
	316	}
	317	}
	318
	319
	320	namespace SymTab {
	321	namespace Mangler {
	322	namespace {
[c20fafd]	323	struct StringView {
	324	private:
	325	std::string str;
	326	size_t idx = 0;
	327	// typedef Type * (StringView::*parser)(Type::Qualifiers);
	328	typedef std::function<Type * (Type::Qualifiers)> parser;
	329	std::vector<std::pair<std::string, parser>> parsers;
	330	public:
	331	StringView(const std::string & str);
	332
	333	bool done() const { return idx >= str.size(); }
	334	char cur() const { assert(! done()); return str[idx]; }
	335
	336	bool expect(char ch) { return str[idx++] == ch; }
	337	void next(size_t inc = 1) { idx += inc; }
	338
	339	/// determines if `pref` is a prefix of `str`
	340	bool isPrefix(const std::string & pref);
	341	bool extractNumber(size_t & out);
	342	bool extractName(std::string & out);
	343	bool stripMangleName(std::string & name);
	344
	345	Type * parseFunction(Type::Qualifiers tq);
	346	Type * parseTuple(Type::Qualifiers tq);
	347	Type * parseVoid(Type::Qualifiers tq);
	348	Type * parsePointer(Type::Qualifiers tq);
[2f9768f]	349	Type * parseArray(Type::Qualifiers tq);
[c20fafd]	350	Type * parseStruct(Type::Qualifiers tq);
[38587bc]	351	Type * parseUnion(Type::Qualifiers tq);
	352	Type * parseEnum(Type::Qualifiers tq);
[efa8b6a]	353	Type * parseType(Type::Qualifiers tq);
[c20fafd]	354
	355	Type * parseType();
	356	bool parse(std::string & name, Type *& type);
	357	};
	358
	359	StringView::StringView(const std::string & str) : str(str) {
	360	// basic types
	361	for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) {
[8316a49]	362	parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) {
[c20fafd]	363	PRINT( std::cerr << "basic type: " << k << std::endl; )
	364	return new BasicType(tq, (BasicType::Kind)k);
	365	});
	366	}
[04c77791]	367	// type variable types
	368	for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) {
[b66d14a]	369	static const std::string typeVariableNames[] = { "DT", "DST", "OT", "FT", "TT", "ALT", };
[550e819]	370	static_assert(
	371	sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS,
	372	"Each type variable kind should have a demangle name prefix"
	373	);
[04c77791]	374	parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * {
	375	PRINT( std::cerr << "type variable type: " << k << std::endl; )
[550e819]	376	size_t N;
	377	if (! extractNumber(N)) return nullptr;
	378	return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype);
[04c77791]	379	});
	380	}
[c20fafd]	381	// everything else
	382	parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); });
	383	parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); });
	384	parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); });
[2f9768f]	385	parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); });
[c20fafd]	386	parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); });
	387	parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); });
[38587bc]	388	parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); });
	389	parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); });
[efa8b6a]	390	parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); });
[56b53b2]	391	parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); });
	392	parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); });
[c20fafd]	393	}
	394
	395	bool StringView::extractNumber(size_t & out) {
	396	std::stringstream numss;
[efa8b6a]	397	if (idx >= str.size()) return false;
[c20fafd]	398	while (isdigit(str[idx])) {
	399	numss << str[idx];
	400	++idx;
[efa8b6a]	401	if (idx == str.size()) break;
[c20fafd]	402	}
	403	if (! (numss >> out)) return false;
[efa8b6a]	404	PRINT( std::cerr << "extractNumber success: " << out << std::endl; )
[c20fafd]	405	return true;
	406	}
	407
	408	bool StringView::extractName(std::string & out) {
	409	size_t len;
	410	if (! extractNumber(len)) return false;
[efa8b6a]	411	if (idx+len > str.size()) return false;
[c20fafd]	412	out = str.substr(idx, len);
	413	idx += len;
[efa8b6a]	414	PRINT( std::cerr << "extractName success: " << out << std::endl; )
[c20fafd]	415	return true;
	416	}
	417
	418	bool StringView::isPrefix(const std::string & pref) {
[8abca06]	419	// if ( pref.size() > str.size()-idx ) return false;
	420	// auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) );
	421	// if (its.first == pref.end()) {
	422	// idx += pref.size();
	423	// return true;
	424	// }
	425
	426	// This update is untested because there are no tests for this code.
	427	if ( ::isPrefix( str, pref, idx ) ) {
[c20fafd]	428	idx += pref.size();
	429	return true;
	430	}
	431	return false;
	432	}
	433
[d1e0979]	434	// strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise
[c20fafd]	435	bool StringView::stripMangleName(std::string & name) {
	436	PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; )
	437	if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix
[8abca06]	438	if ( ! isPrefix(Encoding::manglePrefix) \|\| ! isdigit(str.back() ) ) return false;
[d1e0979]	439
[c20fafd]	440	// get name
	441	if (! extractName(name)) return false;
[d1e0979]	442
	443	// find bounds for type
[c20fafd]	444	PRINT( std::cerr << idx << " " << str.size() << std::endl; )
[d1e0979]	445	PRINT( std::cerr << "[");
[c20fafd]	446	while (isdigit(str.back())) {
[d1e0979]	447	PRINT(std::cerr << ".");
[c20fafd]	448	str.pop_back();
	449	if (str.size() <= idx) return false;
[d1e0979]	450	}
	451	PRINT( std::cerr << "]" << std::endl );
[c20fafd]	452	if (str.back() != '_') return false;
	453	str.pop_back();
	454	PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; )
	455	return str.size() > idx;
	456	}
[d1e0979]	457
[c20fafd]	458	Type * StringView::parseFunction(Type::Qualifiers tq) {
	459	PRINT( std::cerr << "function..." << std::endl; )
	460	if (done()) return nullptr;
	461	FunctionType * ftype = new FunctionType( tq, false );
[d7d63e5]	462	std::unique_ptr<Type> manager(ftype);
[c20fafd]	463	Type * retVal = parseType();
	464	if (! retVal) return nullptr;
	465	PRINT( std::cerr << "with return type: " << retVal << std::endl; )
	466	ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr));
	467	if (done() \|\| ! expect('_')) return nullptr;
	468	while (! done()) {
	469	PRINT( std::cerr << "got ch: " << cur() << std::endl; )
[d7d63e5]	470	if (cur() == '_') return manager.release();
[c20fafd]	471	Type * param = parseType();
	472	if (! param) return nullptr;
	473	PRINT( std::cerr << "with parameter : " << param << std::endl; )
	474	ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr));
	475	}
	476	return nullptr;
[d1e0979]	477	}
	478
[c20fafd]	479	Type * StringView::parseTuple(Type::Qualifiers tq) {
	480	PRINT( std::cerr << "tuple..." << std::endl; )
	481	std::list< Type * > types;
	482	size_t ncomponents;
	483	if (! extractNumber(ncomponents)) return nullptr;
	484	for (size_t i = 0; i < ncomponents; ++i) {
[d7d63e5]	485	// TODO: delete all on return
[c20fafd]	486	if (done()) return nullptr;
	487	PRINT( std::cerr << "got ch: " << cur() << std::endl; )
	488	Type * t = parseType();
	489	if (! t) return nullptr;
	490	PRINT( std::cerr << "with type : " << t << std::endl; )
	491	types.push_back(t);
	492	}
	493	return new TupleType( tq, types );
[d1e0979]	494	}
	495
[c20fafd]	496	Type * StringView::parseVoid(Type::Qualifiers tq) {
	497	return new VoidType( tq );
	498	}
	499
	500	Type * StringView::parsePointer(Type::Qualifiers tq) {
	501	PRINT( std::cerr << "pointer..." << std::endl; )
	502	Type * t = parseType();
	503	if (! t) return nullptr;
	504	return new PointerType( tq, t );
	505	}
	506
[2f9768f]	507	Type * StringView::parseArray(Type::Qualifiers tq) {
	508	PRINT( std::cerr << "array..." << std::endl; )
	509	size_t length;
	510	if (! extractNumber(length)) return nullptr;
	511	Type * t = parseType();
	512	if (! t) return nullptr;
	513	return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false );
	514	}
	515
[c20fafd]	516	Type * StringView::parseStruct(Type::Qualifiers tq) {
	517	PRINT( std::cerr << "struct..." << std::endl; )
	518	std::string name;
	519	if (! extractName(name)) return nullptr;
	520	return new StructInstType(tq, name);
	521	}
	522
[38587bc]	523	Type * StringView::parseUnion(Type::Qualifiers tq) {
	524	PRINT( std::cerr << "union..." << std::endl; )
	525	std::string name;
	526	if (! extractName(name)) return nullptr;
	527	return new UnionInstType(tq, name);
	528	}
	529
	530	Type * StringView::parseEnum(Type::Qualifiers tq) {
	531	PRINT( std::cerr << "enum..." << std::endl; )
	532	std::string name;
	533	if (! extractName(name)) return nullptr;
	534	return new EnumInstType(tq, name);
	535	}
	536
[efa8b6a]	537	Type * StringView::parseType(Type::Qualifiers tq) {
	538	PRINT( std::cerr << "type..." << std::endl; )
	539	std::string name;
	540	if (! extractName(name)) return nullptr;
	541	PRINT( std::cerr << "typename..." << name << std::endl; )
	542	return new TypeInstType(tq, name, false);
	543	}
	544
[c20fafd]	545	Type * StringView::parseType() {
	546	if (done()) return nullptr;
[d1e0979]	547
[04c77791]	548	std::list<TypeDecl *> forall;
	549	if (isPrefix(Encoding::forall)) {
	550	PRINT( std::cerr << "polymorphic with..." << std::endl; )
	551	size_t dcount, fcount, vcount, acount;
	552	if (! extractNumber(dcount)) return nullptr;
	553	PRINT( std::cerr << dcount << " dtypes" << std::endl; )
	554	if (! expect('_')) return nullptr;
	555	if (! extractNumber(fcount)) return nullptr;
	556	PRINT( std::cerr << fcount << " ftypes" << std::endl; )
	557	if (! expect('_')) return nullptr;
	558	if (! extractNumber(vcount)) return nullptr;
	559	PRINT( std::cerr << vcount << " ttypes" << std::endl; )
	560	if (! expect('_')) return nullptr;
	561	if (! extractNumber(acount)) return nullptr;
	562	PRINT( std::cerr << acount << " assertions" << std::endl; )
	563	if (! expect('_')) return nullptr;
[550e819]	564	for (size_t i = 0; i < acount; ++i) {
	565	// TODO: need to recursively parse assertions, but for now just return nullptr so that
	566	// demangler does not crash if there are assertions
	567	return nullptr;
	568	}
[04c77791]	569	if (! expect('_')) return nullptr;
	570	}
	571
[d1e0979]	572	// qualifiers
	573	Type::Qualifiers tq;
	574	while (true) {
[c20fafd]	575	auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) {
	576	return isPrefix(val.second);
[d1e0979]	577	});
[c20fafd]	578	if (qual == Encoding::qualifiers.end()) break;
[d1e0979]	579	tq \|= qual->first;
	580	}
	581
[c20fafd]	582	// find the correct type parser and use it
	583	auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) {
	584	return isPrefix(p.first);
[d1e0979]	585	});
[c20fafd]	586	assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx);
[04c77791]	587	Type * ret = iter->second(tq);
	588	if (! ret) return nullptr;
	589	ret->forall = std::move(forall);
	590	return ret;
[d1e0979]	591	}
	592
[c20fafd]	593	bool StringView::parse(std::string & name, Type *& type) {
	594	if (! stripMangleName(name)) return false;
	595	PRINT( std::cerr << "stripped name: " << name << std::endl; )
	596	Type * t = parseType();
	597	if (! t) return false;
	598	type = t;
	599	return true;
[d1e0979]	600	}
[f47d0ad]	601
	602	std::string demangle(const std::string & mangleName) {
	603	SymTab::Mangler::StringView view(mangleName);
	604	std::string name;
	605	Type * type = nullptr;
	606	if (! view.parse(name, type)) return mangleName;
[d7d63e5]	607	std::unique_ptr<Type> manager(type);
[f47d0ad]	608	return genDemangleType(type, name);
	609	}
[d1e0979]	610	} // namespace
	611	} // namespace Mangler
	612	} // namespace SymTab
	613
	614	extern "C" {
[90cac45]	615	char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) {
[f47d0ad]	616	const std::string & demangleName = SymTab::Mangler::demangle(mangleName);
	617	return strdup(demangleName.c_str());
	618	}
[d1e0979]	619	}
	620
	621	// Local Variables: //
	622	// tab-width: 4 //
	623	// mode: c++ //
	624	// compile-command: "make install" //
	625	// End: //

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