//
// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Demangle.cc -- Convert a mangled name into a human readable name.
//
// Author           : Rob Schluntz
// Created On       : Thu Jul 19 12:52:41 2018
// Last Modified By : Andrew Beach
// Last Modified On : Mon Nov  6 15:59:00 2023
// Update Count     : 12
//

#include <algorithm>
#include <sstream>

#include "AST/Pass.hpp"
#include "AST/Type.hpp"
#include "CodeGen/GenType.h"
#include "CodeGen/OperatorTable.h"
#include "Common/PassVisitor.h"
#include "Common/utility.h"								// isPrefix
#include "Mangler.h"
#include "SynTree/Type.h"
#include "SynTree/Declaration.h"

#define DEBUG
#ifdef DEBUG
#define PRINT(x) x
#else
#define PRINT(x) {}
#endif

namespace SymTab {
	namespace Mangler {
		namespace {
			struct StringView {
			private:
				std::string str;
				size_t idx = 0;
				// typedef Type * (StringView::*parser)(Type::Qualifiers);
				typedef std::function<Type * (Type::Qualifiers)> parser;
				std::vector<std::pair<std::string, parser>> parsers;
			public:
				StringView(const std::string & str);

				bool done() const { return idx >= str.size(); }
				char cur() const { assert(! done()); return str[idx]; }

				bool expect(char ch) { return str[idx++] == ch;	}
				void next(size_t inc = 1) { idx += inc; }

				/// determines if `pref` is a prefix of `str`
				bool isPrefix(const std::string & pref);
				bool extractNumber(size_t & out);
				bool extractName(std::string & out);
				bool stripMangleName(std::string & name);

				Type * parseFunction(Type::Qualifiers tq);
				Type * parseTuple(Type::Qualifiers tq);
				Type * parseVoid(Type::Qualifiers tq);
				Type * parsePointer(Type::Qualifiers tq);
				Type * parseArray(Type::Qualifiers tq);
				Type * parseStruct(Type::Qualifiers tq);
				Type * parseUnion(Type::Qualifiers tq);
				Type * parseEnum(Type::Qualifiers tq);
				Type * parseType(Type::Qualifiers tq);

				Type * parseType();
				bool parse(std::string & name, Type *& type);
			};

			StringView::StringView(const std::string & str) : str(str) {
				// basic types
				for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) {
					parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) {
						PRINT( std::cerr << "basic type: " << k << std::endl; )
						return new BasicType(tq, (BasicType::Kind)k);
					});
				}
				// type variable types
				for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) {
					static const std::string typeVariableNames[] = { "DT", "DST", "OT", "FT", "TT", "ALT", };
					static_assert(
						sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS,
						"Each type variable kind should have a demangle name prefix"
					);
					parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * {
						PRINT( std::cerr << "type variable type: " << k << std::endl; )
						size_t N;
						if (! extractNumber(N)) return nullptr;
						return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype);
					});
				}
				// everything else
				parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); });
				parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); });
				parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); });
				parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); });
				parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); });
				parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); });
				parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); });
				parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); });
				parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); });
				parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); });
				parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); });
			}

			bool StringView::extractNumber(size_t & out) {
				std::stringstream numss;
				if (idx >= str.size()) return false;
				while (isdigit(str[idx])) {
					numss << str[idx];
					++idx;
					if (idx == str.size()) break;
				}
				if (! (numss >> out)) return false;
				PRINT( std::cerr << "extractNumber success: " << out << std::endl; )
				return true;
			}

			bool StringView::extractName(std::string & out) {
				size_t len;
				if (! extractNumber(len)) return false;
				if (idx+len > str.size()) return false;
				out = str.substr(idx, len);
				idx += len;
				PRINT( std::cerr << "extractName success: " << out << std::endl; )
				return true;
			}

			bool StringView::isPrefix(const std::string & pref) {
				// if ( pref.size() > str.size()-idx ) return false;
				// auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) );
				// if (its.first == pref.end()) {
				// 	idx += pref.size();
				// 	return true;
				// }

				// This update is untested because there are no tests for this code.
				if ( ::isPrefix( str, pref, idx ) ) {
					idx += pref.size();
					return true;
				}
				return false;
			}

			// strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise
			bool StringView::stripMangleName(std::string & name) {
				PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; )
				if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix
				if ( ! isPrefix(Encoding::manglePrefix) || ! isdigit(str.back() ) ) return false;

				// get name
				if (! extractName(name)) return false;

				// find bounds for type
				PRINT( std::cerr << idx << " " << str.size() << std::endl; )
				PRINT( std::cerr << "[");
				while (isdigit(str.back())) {
					PRINT(std::cerr << ".");
					str.pop_back();
					if (str.size() <= idx) return false;
				}
				PRINT( std::cerr << "]" << std::endl );
				if (str.back() != '_') return false;
				str.pop_back();
				PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; )
				return str.size() > idx;
			}

			Type * StringView::parseFunction(Type::Qualifiers tq) {
				PRINT( std::cerr << "function..." << std::endl; )
				if (done()) return nullptr;
				FunctionType * ftype = new FunctionType( tq, false );
				std::unique_ptr<Type> manager(ftype);
				Type * retVal = parseType();
				if (! retVal) return nullptr;
				PRINT( std::cerr << "with return type: " << retVal << std::endl; )
				ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr));
				if (done() || ! expect('_')) return nullptr;
				while (! done()) {
					PRINT( std::cerr << "got ch: " << cur() << std::endl; )
					if (cur() == '_') return manager.release();
					Type * param = parseType();
					if (! param) return nullptr;
					PRINT( std::cerr << "with parameter : " << param << std::endl; )
					ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr));
				}
				return nullptr;
			}

			Type * StringView::parseTuple(Type::Qualifiers tq) {
				PRINT( std::cerr << "tuple..." << std::endl; )
				std::list< Type * > types;
				size_t ncomponents;
				if (! extractNumber(ncomponents)) return nullptr;
				for (size_t i = 0; i < ncomponents; ++i) {
					// TODO: delete all on return
					if (done()) return nullptr;
					PRINT( std::cerr << "got ch: " << cur() << std::endl; )
					Type * t = parseType();
					if (! t) return nullptr;
					PRINT( std::cerr << "with type : " << t << std::endl; )
					types.push_back(t);
				}
				return new TupleType( tq, types );
			}

			Type * StringView::parseVoid(Type::Qualifiers tq) {
				return new VoidType( tq );
			}

			Type * StringView::parsePointer(Type::Qualifiers tq) {
				PRINT( std::cerr << "pointer..." << std::endl; )
				Type * t = parseType();
				if (! t) return nullptr;
				return new PointerType( tq, t );
			}

			Type * StringView::parseArray(Type::Qualifiers tq) {
				PRINT( std::cerr << "array..." << std::endl; )
				size_t length;
				if (! extractNumber(length)) return nullptr;
				Type * t = parseType();
				if (! t) return nullptr;
				return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false );
			}

			Type * StringView::parseStruct(Type::Qualifiers tq) {
				PRINT( std::cerr << "struct..." << std::endl; )
				std::string name;
				if (! extractName(name)) return nullptr;
				return new StructInstType(tq, name);
			}

			Type * StringView::parseUnion(Type::Qualifiers tq) {
				PRINT( std::cerr << "union..." << std::endl; )
				std::string name;
				if (! extractName(name)) return nullptr;
				return new UnionInstType(tq, name);
			}

			Type * StringView::parseEnum(Type::Qualifiers tq) {
				PRINT( std::cerr << "enum..." << std::endl; )
				std::string name;
				if (! extractName(name)) return nullptr;
				return new EnumInstType(tq, name);
			}

			Type * StringView::parseType(Type::Qualifiers tq) {
				PRINT( std::cerr << "type..." << std::endl; )
				std::string name;
				if (! extractName(name)) return nullptr;
				PRINT( std::cerr << "typename..." << name << std::endl; )
				return new TypeInstType(tq, name, false);
			}

			Type * StringView::parseType() {
				if (done()) return nullptr;

				std::list<TypeDecl *> forall;
				if (isPrefix(Encoding::forall)) {
					PRINT( std::cerr << "polymorphic with..." << std::endl; )
					size_t dcount, fcount, vcount, acount;
					if (! extractNumber(dcount)) return nullptr;
					PRINT( std::cerr << dcount << " dtypes" << std::endl; )
					if (! expect('_')) return nullptr;
					if (! extractNumber(fcount)) return nullptr;
					PRINT( std::cerr << fcount << " ftypes" << std::endl; )
					if (! expect('_')) return nullptr;
					if (! extractNumber(vcount)) return nullptr;
					PRINT( std::cerr << vcount << " ttypes" << std::endl; )
					if (! expect('_')) return nullptr;
					if (! extractNumber(acount)) return nullptr;
					PRINT( std::cerr << acount << " assertions" << std::endl; )
					if (! expect('_')) return nullptr;
					for (size_t i = 0; i < acount; ++i) {
						// TODO: need to recursively parse assertions, but for now just return nullptr so that
						// demangler does not crash if there are assertions
						return nullptr;
					}
					if (! expect('_')) return nullptr;
				}

				// qualifiers
				Type::Qualifiers tq;
				while (true) {
					auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) {
						return isPrefix(val.second);
					});
					if (qual == Encoding::qualifiers.end()) break;
					tq |= qual->first;
				}

				// find the correct type parser and use it
				auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) {
					return isPrefix(p.first);
				});
				assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx);
				Type * ret = iter->second(tq);
				if (! ret) return nullptr;
				ret->forall = std::move(forall);
				return ret;
			}

			bool StringView::parse(std::string & name, Type *& type) {
				if (! stripMangleName(name)) return false;
				PRINT( std::cerr << "stripped name: " << name << std::endl; )
				Type * t = parseType();
				if (! t) return false;
				type = t;
				return true;
			}

			std::string demangle(const std::string & mangleName) {
				SymTab::Mangler::StringView view(mangleName);
				std::string name;
				Type * type = nullptr;
				if (! view.parse(name, type)) return mangleName;
				auto info = CodeGen::operatorLookupByOutput(name);
				if (info) name = info->inputName;
				std::unique_ptr<Type> manager(type);
				return CodeGen::genType(type, name);
			}
		} // namespace
	} // namespace Mangler
} // namespace SymTab

namespace Mangle {

namespace {

struct Demangler {
private:
	std::string str;
	size_t index = 0;
	using Parser = std::function<ast::Type * ( ast::CV::Qualifiers )>;
	std::vector<std::pair<std::string, Parser>> parsers;
public:
	Demangler( const std::string & str );

	bool done() const { return str.size() <= index; }
	char cur() const { assert( !done() ); return str[index]; }
	bool expect( char ch ) { return str[index++] == ch; }

	bool isPrefix( const std::string & pref );
	bool extractNumber( size_t & out );
	bool extractName( std::string & out );
	bool stripMangleName( std::string & name );

	ast::Type * parseFunction( ast::CV::Qualifiers tq );
	ast::Type * parseTuple( ast::CV::Qualifiers tq );
	ast::Type * parsePointer( ast::CV::Qualifiers tq );
	ast::Type * parseArray( ast::CV::Qualifiers tq );
	ast::Type * parseStruct( ast::CV::Qualifiers tq );
	ast::Type * parseUnion( ast::CV::Qualifiers tq );
	ast::Type * parseEnum( ast::CV::Qualifiers tq );
	ast::Type * parseType( ast::CV::Qualifiers tq );
	ast::Type * parseZero( ast::CV::Qualifiers tq );
	ast::Type * parseOne( ast::CV::Qualifiers tq );

	ast::Type * parseType();
	bool parse( std::string & name, ast::Type *& type );
};

Demangler::Demangler(const std::string & str) : str(str) {
	for (size_t k = 0; k < ast::BasicType::NUMBER_OF_BASIC_TYPES; ++k) {
		parsers.emplace_back(Encoding::basicTypes[k], [k]( ast::CV::Qualifiers tq ) {
			PRINT( std::cerr << "basic type: " << k << std::endl; )
			return new ast::BasicType( (ast::BasicType::Kind)k, tq );
		});
	}

	for (size_t k = 0; k < ast::TypeDecl::NUMBER_OF_KINDS; ++k) {
		static const std::string typeVariableNames[] = { "DT", "DST", "OT", "FT", "TT", "ALT", };
		static_assert(
			sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == ast::TypeDecl::NUMBER_OF_KINDS,
			"Each type variable kind should have a demangle name prefix"
		);
		parsers.emplace_back(Encoding::typeVariables[k], [k, this]( ast::CV::Qualifiers tq ) -> ast::TypeInstType * {
			PRINT( std::cerr << "type variable type: " << k << std::endl; )
			size_t N;
			if (!extractNumber(N)) return nullptr;
			return new ast::TypeInstType(
				toString(typeVariableNames[k], N),
				(ast::TypeDecl::Kind)k,
				tq );
		});
	}

	parsers.emplace_back(Encoding::void_t, [this]( ast::CV::Qualifiers tq ) { return new ast::VoidType(tq); });
	parsers.emplace_back(Encoding::function, [this]( ast::CV::Qualifiers tq ) { return parseFunction(tq); });
	parsers.emplace_back(Encoding::pointer, [this]( ast::CV::Qualifiers tq ) { return parsePointer(tq); });
	parsers.emplace_back(Encoding::array, [this]( ast::CV::Qualifiers tq ) { return parseArray(tq); });
	parsers.emplace_back(Encoding::tuple, [this]( ast::CV::Qualifiers tq ) { return parseTuple(tq); });
	parsers.emplace_back(Encoding::struct_t, [this]( ast::CV::Qualifiers tq ) { return parseStruct(tq); });
	parsers.emplace_back(Encoding::union_t, [this]( ast::CV::Qualifiers tq ) { return parseUnion(tq); });
	parsers.emplace_back(Encoding::enum_t, [this]( ast::CV::Qualifiers tq ) { return parseEnum(tq); });
	parsers.emplace_back(Encoding::type, [this]( ast::CV::Qualifiers tq ) { return parseType(tq); });
	parsers.emplace_back(Encoding::zero, []( ast::CV::Qualifiers tq ) { return new ast::ZeroType(tq); });
	parsers.emplace_back(Encoding::one, []( ast::CV::Qualifiers tq ) { return new ast::OneType(tq); });
}

bool Demangler::extractNumber( size_t & out ) {
	std::stringstream numss;
	if ( str.size() <= index ) return false;
	while ( isdigit( str[index] ) ) {
		numss << str[index];
		++index;
		if ( str.size() == index ) break;
	}
	if ( !(numss >> out) ) return false;
	PRINT( std::cerr << "extractNumber success: " << out << std::endl; )
	return true;
}

bool Demangler::extractName( std::string & out ) {
	size_t len;
	if ( !extractNumber(len) ) return false;
	if ( str.size() < index + len ) return false;
	out = str.substr( index, len );
	index += len;
	PRINT( std::cerr << "extractName success: " << out << std::endl; )
	return true;
}

bool Demangler::isPrefix( const std::string & pref ) {
	// Wraps the utility isPrefix function.
	if ( ::isPrefix( str, pref, index ) ) {
		index += pref.size();
		return true;
	}
	return false;
}

// strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise
bool Demangler::stripMangleName( std::string & name ) {
	PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; )
	if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix
	if ( !isPrefix(Encoding::manglePrefix) || !isdigit(str.back() ) ) return false;

	if (!extractName(name)) return false;

	// Find bounds for type.
	PRINT( std::cerr << index << " " << str.size() << std::endl; )
	PRINT( std::cerr << "[");
	while (isdigit(str.back())) {
		PRINT(std::cerr << ".");
		str.pop_back();
		if (str.size() <= index) return false;
	}
	PRINT( std::cerr << "]" << std::endl );
	if (str.back() != '_') return false;
	str.pop_back();
	PRINT( std::cerr << str.size() << " " << name << " " << str.substr(index) << std::endl; )
	return index < str.size();
}

ast::Type * Demangler::parseFunction( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "function..." << std::endl; )
	if ( done() ) return nullptr;
	ast::FunctionType * ftype = new ast::FunctionType( ast::FixedArgs, tq );
	std::unique_ptr<ast::Type> manager( ftype );
	ast::Type * retVal = parseType();
	if ( !retVal ) return nullptr;
	PRINT( std::cerr << "with return type: " << retVal << std::endl; )
	ftype->returns.emplace_back( retVal );
	if ( done() || !expect('_') ) return nullptr;
	while ( !done() ) {
		PRINT( std::cerr << "got ch: " << cur() << std::endl; )
		if ( cur() == '_' ) return manager.release();
		ast::Type * param = parseType();
		if ( !param ) return nullptr;
		PRINT( std::cerr << "with parameter : " << param << std::endl; )
		ftype->params.emplace_back( param );
	}
	return nullptr;
}

ast::Type * Demangler::parseTuple( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "tuple..." << std::endl; )
	std::vector<ast::ptr<ast::Type>> types;
	size_t ncomponents;
	if ( !extractNumber(ncomponents) ) return nullptr;
	for ( size_t i = 0; i < ncomponents; ++i ) {
		if ( done() ) return nullptr;
		PRINT( std::cerr << "got ch: " << cur() << std::endl; )
		ast::Type * t = parseType();
		if ( !t ) return nullptr;
		PRINT( std::cerr << "with type : " << t << std::endl; )
		types.push_back( t );
	}
	return new ast::TupleType( std::move( types ), tq );
}

ast::Type * Demangler::parsePointer( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "pointer..." << std::endl; )
	ast::Type * t = parseType();
	if ( !t ) return nullptr;
	return new ast::PointerType( t, tq );
}

ast::Type * Demangler::parseArray( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "array..." << std::endl; )
	size_t length;
	if ( !extractNumber(length) ) return nullptr;
	ast::Type * t = parseType();
	if ( !t ) return nullptr;
	return new ast::ArrayType(
		t,
		ast::ConstantExpr::from_ulong( CodeLocation(), length ),
		ast::FixedLen,
		ast::DynamicDim,
		tq );
}

ast::Type * Demangler::parseStruct( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "struct..." << std::endl; )
	std::string name;
	if ( !extractName(name) ) return nullptr;
	return new ast::StructInstType( name, tq );
}

ast::Type * Demangler::parseUnion( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "union..." << std::endl; )
	std::string name;
	if ( !extractName(name) ) return nullptr;
	return new ast::UnionInstType( name, tq );
}

ast::Type * Demangler::parseEnum( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "enum..." << std::endl; )
	std::string name;
	if ( !extractName(name) ) return nullptr;
	return new ast::EnumInstType( name, tq );
}

ast::Type * Demangler::parseType( ast::CV::Qualifiers tq ) {
	PRINT( std::cerr << "type..." << std::endl; )
	std::string name;
	if ( !extractName(name) ) return nullptr;
	PRINT( std::cerr << "typename..." << name << std::endl; )
	return new ast::TypeInstType( name, ast::TypeDecl::Dtype, tq );
}

ast::Type * Demangler::parseType() {
	if (done()) return nullptr;

	std::list<TypeDecl *> forall;
	if (isPrefix(Encoding::forall)) {
		PRINT( std::cerr << "polymorphic with..." << std::endl; )
		size_t dcount, fcount, vcount, acount;
		if ( !extractNumber(dcount) ) return nullptr;
		PRINT( std::cerr << dcount << " dtypes" << std::endl; )
		if ( !expect('_') ) return nullptr;
		if ( !extractNumber(fcount) ) return nullptr;
		PRINT( std::cerr << fcount << " ftypes" << std::endl; )
		if ( !expect('_')) return nullptr;
		if ( !extractNumber(vcount)) return nullptr;
		PRINT( std::cerr << vcount << " ttypes" << std::endl; )
		if ( !expect('_') ) return nullptr;
		if ( !extractNumber(acount) ) return nullptr;
		PRINT( std::cerr << acount << " assertions" << std::endl; )
		if ( !expect('_') ) return nullptr;
		for ( size_t i = 0 ; i < acount ; ++i ) {
			// TODO: need to recursively parse assertions, but for now just return nullptr so that
			// demangler does not crash if there are assertions
			return nullptr;
		}
		if ( !expect('_') ) return nullptr;
	}

	ast::CV::Qualifiers tq;
	while (true) {
		auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) {
			return isPrefix(val.second);
		});
		if (qual == Encoding::qualifiers.end()) break;
		tq |= qual->first;
	}

	// Find the correct type parser and then apply it.
	auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, Parser> & p) {
		return isPrefix(p.first);
	});
	assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), index);
	ast::Type * ret = iter->second(tq);
	if ( !ret ) return nullptr;
	return ret;
}

bool Demangler::parse( std::string & name, ast::Type *& type) {
	if ( !stripMangleName(name) ) return false;
	PRINT( std::cerr << "stripped name: " << name << std::endl; )
	ast::Type * t = parseType();
	if ( !t ) return false;
	type = t;
	return true;
}

std::string demangle( const std::string & mangleName ) {
	using namespace CodeGen;
	Demangler demangler( mangleName );
	std::string name;
	ast::Type * type = nullptr;
	if ( !demangler.parse( name, type ) ) return mangleName;
	ast::readonly<ast::Type> roType = type;
	if ( auto info = operatorLookupByOutput( name ) ) name = info->inputName;
	return genType( type, name, Options( false, false, false, false ) );
}

} // namespace

} // namespace Mangle

extern "C" {
	char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) {
		const std::string & demangleName = Mangle::demangle(mangleName);
		return strdup(demangleName.c_str());
	}
}

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //