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source: src/AST/Convert.cpp@ 1e6ea4e1

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Last change on this file since 1e6ea4e1 was 05d55ff, checked in by Aaron Moss <a3moss@…>, 6 years ago
Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc
Property mode set to `100644`
File size: 73.0 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2019 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	// Convert.cpp -- Convert between the new and old syntax trees.
8	//
9	// Author : Thierry Delisle
10	// Created On : Thu May 09 15::37::05 2019
11	// Last Modified By : Andrew Beach
12	// Last Modified On : Thu May 06 19:51:00 2019
13	// Update Count : 10
14	//
15
16	#include "Convert.hpp"
17
18	#include <deque>
19	#include <unordered_map>
20
21	#include "AST/Attribute.hpp"
22	#include "AST/Decl.hpp"
23	#include "AST/Expr.hpp"
24	#include "AST/Init.hpp"
25	#include "AST/Stmt.hpp"
26	#include "AST/TypeSubstitution.hpp"
27
28	#include "SymTab/Autogen.h"
29	#include "SynTree/Attribute.h"
30	#include "SynTree/Declaration.h"
31	#include "SynTree/TypeSubstitution.h"
32
33	#include "Validate/FindSpecialDecls.h"
34
35	//================================================================================================
36	// Utilities
37	template<template <class...> class C>
38	struct to {
39	template<typename T>
40	static auto from( T && v ) -> C< typename T::value_type > {
41	C< typename T::value_type > l;
42	std::move(std::begin(v), std::end(v), std::back_inserter(l));
43	return l;
44	}
45	};
46
47	//================================================================================================
48	namespace {
49
50	// This is to preserve the FindSpecialDecls hack. It does not (and perhaps should not)
51	// allow us to use the same stratagy in the new ast.
52	ast::Type * sizeType = nullptr;
53	ast::FunctionDecl * dereferenceOperator = nullptr;
54	ast::StructDecl * dtorStruct = nullptr;
55	ast::FunctionDecl * dtorStructDestroy = nullptr;
56
57	}
58
59	//================================================================================================
60	class ConverterNewToOld : public ast::Visitor {
61	BaseSyntaxNode * node = nullptr;
62	using Cache = std::unordered_map< const ast::Node , BaseSyntaxNode >;
63	Cache cache;
64
65	template<typename T>
66	struct Getter {
67	ConverterNewToOld & visitor;
68
69	template<typename U, enum ast::Node::ref_type R>
70	T * accept1( const ast::ptr_base<U, R> & ptr ) {
71	if ( ! ptr ) return nullptr;
72	ptr->accept( visitor );
73	T * ret = strict_dynamic_cast< T * >( visitor.node );
74	visitor.node = nullptr;
75	return ret;
76	}
77
78	template<typename U>
79	std::list< T * > acceptL( const U & container ) {
80	std::list< T * > ret;
81	for ( auto ptr : container ) {
82	ret.emplace_back( accept1( ptr ) );
83	}
84	return ret;
85	}
86	};
87
88	template<typename T>
89	Getter<T> get() {
90	return Getter<T>{ *this };
91	}
92
93	Label makeLabel(Statement * labelled, const ast::Label& label) {
94	return Label(
95	label.name,
96	labelled,
97	get<Attribute>().acceptL(label.attributes)
98	);
99	}
100
101	template<template <class...> class C>
102	std::list<Label> makeLabelL(Statement * labelled, const C<ast::Label>& labels) {
103	std::list<Label> ret;
104	for (auto label : labels) {
105	ret.push_back( makeLabel(labelled, label) );
106	}
107	return ret;
108	}
109
110	/// get new qualifiers from old type
111	Type::Qualifiers cv( const ast::Type * ty ) { return { ty->qualifiers.val }; }
112
113	/// returns true and sets `node` if in cache
114	bool inCache( const ast::Node * node ) {
115	auto it = cache.find( node );
116	if ( it == cache.end() ) return false;
117	this->node = it->second;
118	return true;
119	}
120
121	public:
122	Declaration * decl( const ast::Decl * declNode ) {
123	return get<Declaration>().accept1( ast::ptr<ast::Decl>( declNode ) );
124	}
125
126	private:
127	void declPostamble( Declaration * decl, const ast::Decl * node ) {
128	decl->location = node->location;
129	// name comes from constructor
130	// linkage comes from constructor
131	decl->extension = node->extension;
132	decl->uniqueId = node->uniqueId;
133	// storageClasses comes from constructor
134	this->node = decl;
135	}
136
137	const ast::DeclWithType * declWithTypePostamble (
138	DeclarationWithType * decl, const ast::DeclWithType * node ) {
139	cache.emplace( node, decl );
140	decl->mangleName = node->mangleName;
141	decl->scopeLevel = node->scopeLevel;
142	decl->asmName = get<Expression>().accept1( node->asmName );
143	// attributes comes from constructor
144	decl->isDeleted = node->isDeleted;
145	// fs comes from constructor
146	declPostamble( decl, node );
147	return nullptr;
148	}
149
150	const ast::DeclWithType * visit( const ast::ObjectDecl * node ) override final {
151	auto&& bfwd = get<Expression>().accept1( node->bitfieldWidth );
152	auto&& type = get<Type>().accept1( node->type );
153	auto&& init = get<Initializer>().accept1( node->init );
154	auto&& attr = get<Attribute>().acceptL( node->attributes );
155	if ( inCache( node ) ) {
156	if(node->name == "tmp") {
157	std::cerr << (void)node << "(new) in cache " << (void)this->node << "(old)" << std::endl;
158	}
159	return nullptr;
160	}
161	auto decl = new ObjectDecl(
162	node->name,
163	Type::StorageClasses( node->storage.val ),
164	LinkageSpec::Spec( node->linkage.val ),
165	bfwd,
166	type,
167	init,
168	attr,
169	Type::FuncSpecifiers( node->funcSpec.val )
170	);
171	if(node->name == "tmp") {
172	std::cerr << (void)node << "(new) created " << (void)decl << "(old)" << std::endl;
173	}
174	return declWithTypePostamble( decl, node );
175	}
176
177	const ast::DeclWithType * visit( const ast::FunctionDecl * node ) override final {
178	if ( inCache( node ) ) return nullptr;
179	auto decl = new FunctionDecl(
180	node->name,
181	Type::StorageClasses( node->storage.val ),
182	LinkageSpec::Spec( node->linkage.val ),
183	get<FunctionType>().accept1( node->type ),
184	{},
185	get<Attribute>().acceptL( node->attributes ),
186	Type::FuncSpecifiers( node->funcSpec.val )
187	);
188	cache.emplace( node, decl );
189	decl->statements = get<CompoundStmt>().accept1( node->stmts );
190	decl->withExprs = get<Expression>().acceptL( node->withExprs );
191	if ( dereferenceOperator == node ) {
192	Validate::dereferenceOperator = decl;
193	}
194	if ( dtorStructDestroy == node ) {
195	Validate::dtorStructDestroy = decl;
196	}
197	return declWithTypePostamble( decl, node );
198	}
199
200	const ast::Decl * namedTypePostamble( NamedTypeDecl * decl, const ast::NamedTypeDecl * node ) {
201	// base comes from constructor
202	decl->parameters = get<TypeDecl>().acceptL( node->params );
203	decl->assertions = get<DeclarationWithType>().acceptL( node->assertions );
204	declPostamble( decl, node );
205	return nullptr;
206	}
207
208	const ast::Decl * visit( const ast::TypeDecl * node ) override final {
209	if ( inCache( node ) ) return nullptr;
210	auto decl = new TypeDecl(
211	node->name,
212	Type::StorageClasses( node->storage.val ),
213	get<Type>().accept1( node->base ),
214	(TypeDecl::Kind)(unsigned)node->kind,
215	node->sized,
216	get<Type>().accept1( node->init )
217	);
218	cache.emplace( node, decl );
219	return namedTypePostamble( decl, node );
220	}
221
222	const ast::Decl * visit( const ast::TypedefDecl * node ) override final {
223	auto decl = new TypedefDecl(
224	node->name,
225	node->location,
226	Type::StorageClasses( node->storage.val ),
227	get<Type>().accept1( node->base ),
228	LinkageSpec::Spec( node->linkage.val )
229	);
230	return namedTypePostamble( decl, node );
231	}
232
233	const ast::Decl * aggregatePostamble( AggregateDecl * decl, const ast::AggregateDecl * node ) {
234	cache.emplace( node, decl );
235	decl->members = get<Declaration>().acceptL( node->members );
236	decl->parameters = get<TypeDecl>().acceptL( node->params );
237	decl->body = node->body;
238	// attributes come from constructor
239	decl->parent = get<AggregateDecl>().accept1( node->parent );
240	declPostamble( decl, node );
241	return nullptr;
242	}
243
244	const ast::Decl * visit( const ast::StructDecl * node ) override final {
245	if ( inCache( node ) ) return nullptr;
246	auto decl = new StructDecl(
247	node->name,
248	node->kind,
249	get<Attribute>().acceptL( node->attributes ),
250	LinkageSpec::Spec( node->linkage.val )
251	);
252
253	if ( dtorStruct == node ) {
254	Validate::dtorStruct = decl;
255	}
256
257	return aggregatePostamble( decl, node );
258	}
259
260	const ast::Decl * visit( const ast::UnionDecl * node ) override final {
261	if ( inCache( node ) ) return nullptr;
262	auto decl = new UnionDecl(
263	node->name,
264	get<Attribute>().acceptL( node->attributes ),
265	LinkageSpec::Spec( node->linkage.val )
266	);
267	return aggregatePostamble( decl, node );
268	}
269
270	const ast::Decl * visit( const ast::EnumDecl * node ) override final {
271	if ( inCache( node ) ) return nullptr;
272	auto decl = new EnumDecl(
273	node->name,
274	get<Attribute>().acceptL( node->attributes ),
275	LinkageSpec::Spec( node->linkage.val )
276	);
277	return aggregatePostamble( decl, node );
278	}
279
280	const ast::Decl * visit( const ast::TraitDecl * node ) override final {
281	if ( inCache( node ) ) return nullptr;
282	auto decl = new TraitDecl(
283	node->name,
284	{},
285	LinkageSpec::Spec( node->linkage.val )
286	);
287	return aggregatePostamble( decl, node );
288	}
289
290	const ast::AsmDecl * visit( const ast::AsmDecl * node ) override final {
291	auto decl = new AsmDecl( get<AsmStmt>().accept1( node->stmt ) );
292	declPostamble( decl, node );
293	return nullptr;
294	}
295
296	const ast::StaticAssertDecl * visit( const ast::StaticAssertDecl * node ) override final {
297	auto decl = new StaticAssertDecl(
298	get<Expression>().accept1( node->cond ),
299	get<ConstantExpr>().accept1( node->msg )
300	);
301	declPostamble( decl, node );
302	return nullptr;
303	}
304
305	const ast::Stmt * stmtPostamble( Statement * stmt, const ast::Stmt * node ) {
306	cache.emplace( node, stmt );
307	stmt->location = node->location;
308	stmt->labels = makeLabelL( stmt, node->labels );
309	this->node = stmt;
310	return nullptr;
311	}
312
313	const ast::CompoundStmt * visit( const ast::CompoundStmt * node ) override final {
314	if ( inCache( node ) ) return nullptr;
315	auto stmt = new CompoundStmt( get<Statement>().acceptL( node->kids ) );
316	stmtPostamble( stmt, node );
317	return nullptr;
318	}
319
320	const ast::Stmt * visit( const ast::ExprStmt * node ) override final {
321	if ( inCache( node ) ) return nullptr;
322	auto stmt = new ExprStmt( nullptr );
323	cache.emplace( node, stmt );
324	stmt->expr = get<Expression>().accept1( node->expr );
325	return stmtPostamble( stmt, node );
326	}
327
328	const ast::Stmt * visit( const ast::AsmStmt * node ) override final {
329	if ( inCache( node ) ) return nullptr;
330	auto stmt = new AsmStmt(
331	node->isVolatile,
332	get<Expression>().accept1( node->instruction ),
333	get<Expression>().acceptL( node->output ),
334	get<Expression>().acceptL( node->input ),
335	get<ConstantExpr>().acceptL( node->clobber ),
336	makeLabelL( nullptr, node->gotoLabels ) // What are these labelling?
337	);
338	return stmtPostamble( stmt, node );
339	}
340
341	const ast::Stmt * visit( const ast::DirectiveStmt * node ) override final {
342	if ( inCache( node ) ) return nullptr;
343	auto stmt = new DirectiveStmt( node->directive );
344	return stmtPostamble( stmt, node );
345	}
346
347	const ast::Stmt * visit( const ast::IfStmt * node ) override final {
348	if ( inCache( node ) ) return nullptr;
349	auto stmt = new IfStmt(
350	get<Expression>().accept1( node->cond ),
351	get<Statement>().accept1( node->thenPart ),
352	get<Statement>().accept1( node->elsePart ),
353	get<Statement>().acceptL( node->inits )
354	);
355	return stmtPostamble( stmt, node );
356	}
357
358	const ast::Stmt * visit( const ast::SwitchStmt * node ) override final {
359	if ( inCache( node ) ) return nullptr;
360	auto stmt = new SwitchStmt(
361	get<Expression>().accept1( node->cond ),
362	get<Statement>().acceptL( node->stmts )
363	);
364	return stmtPostamble( stmt, node );
365	}
366
367	const ast::Stmt * visit( const ast::CaseStmt * node ) override final {
368	if ( inCache( node ) ) return nullptr;
369	auto stmt = new CaseStmt(
370	get<Expression>().accept1( node->cond ),
371	get<Statement>().acceptL( node->stmts ),
372	node->isDefault()
373	);
374	return stmtPostamble( stmt, node );
375	}
376
377	const ast::Stmt * visit( const ast::WhileStmt * node ) override final {
378	if ( inCache( node ) ) return nullptr;
379	auto inits = get<Statement>().acceptL( node->inits );
380	auto stmt = new WhileStmt(
381	get<Expression>().accept1( node->cond ),
382	get<Statement>().accept1( node->body ),
383	inits,
384	node->isDoWhile
385	);
386	return stmtPostamble( stmt, node );
387	}
388
389	const ast::Stmt * visit( const ast::ForStmt * node ) override final {
390	if ( inCache( node ) ) return nullptr;
391	auto stmt = new ForStmt(
392	get<Statement>().acceptL( node->inits ),
393	get<Expression>().accept1( node->cond ),
394	get<Expression>().accept1( node->inc ),
395	get<Statement>().accept1( node->body )
396	);
397	return stmtPostamble( stmt, node );
398	}
399
400	const ast::Stmt * visit( const ast::BranchStmt * node ) override final {
401	if ( inCache( node ) ) return nullptr;
402	BranchStmt * stmt;
403	if (node->computedTarget) {
404	stmt = new BranchStmt( get<Expression>().accept1( node->computedTarget ),
405	BranchStmt::Goto );
406	} else {
407	BranchStmt::Type type;
408	switch (node->kind) {
409	#define CASE(n) \
410	case ast::BranchStmt::n: \
411	type = BranchStmt::n; \
412	break
413	CASE(Goto);
414	CASE(Break);
415	CASE(Continue);
416	CASE(FallThrough);
417	CASE(FallThroughDefault);
418	#undef CASE
419	default:
420	assertf(false, "Invalid ast::BranchStmt::Kind: %d\n", node->kind);
421	}
422
423	// The labels here are also weird.
424	stmt = new BranchStmt( makeLabel( nullptr, node->originalTarget ), type );
425	stmt->target = makeLabel( stmt, node->target );
426	}
427	return stmtPostamble( stmt, node );
428	}
429
430	const ast::Stmt * visit( const ast::ReturnStmt * node ) override final {
431	if ( inCache( node ) ) return nullptr;
432	auto stmt = new ReturnStmt( get<Expression>().accept1( node->expr ) );
433	return stmtPostamble( stmt, node );
434	}
435
436	const ast::Stmt * visit( const ast::ThrowStmt * node ) override final {
437	if ( inCache( node ) ) return nullptr;
438	ThrowStmt::Kind kind;
439	switch (node->kind) {
440	case ast::ExceptionKind::Terminate:
441	kind = ThrowStmt::Terminate;
442	break;
443	case ast::ExceptionKind::Resume:
444	kind = ThrowStmt::Resume;
445	break;
446	default:
447	assertf(false, "Invalid ast::ThrowStmt::Kind: %d\n", node->kind);
448	}
449	auto stmt = new ThrowStmt(
450	kind,
451	get<Expression>().accept1( node->expr ),
452	get<Expression>().accept1( node->target )
453	);
454	return stmtPostamble( stmt, node );
455	}
456
457	const ast::Stmt * visit( const ast::TryStmt * node ) override final {
458	if ( inCache( node ) ) return nullptr;
459	auto handlers = get<CatchStmt>().acceptL( node->handlers );
460	auto stmt = new TryStmt(
461	get<CompoundStmt>().accept1( node->body ),
462	handlers,
463	get<FinallyStmt>().accept1( node->finally )
464	);
465	return stmtPostamble( stmt, node );
466	}
467
468	const ast::Stmt * visit( const ast::CatchStmt * node ) override final {
469	if ( inCache( node ) ) return nullptr;
470	CatchStmt::Kind kind;
471	switch (node->kind) {
472	case ast::ExceptionKind::Terminate:
473	kind = CatchStmt::Terminate;
474	break;
475	case ast::ExceptionKind::Resume:
476	kind = CatchStmt::Resume;
477	break;
478	default:
479	assertf(false, "Invalid ast::CatchStmt::Kind: %d\n", node->kind);
480	}
481	auto stmt = new CatchStmt(
482	kind,
483	get<Declaration>().accept1( node->decl ),
484	get<Expression>().accept1( node->cond ),
485	get<Statement>().accept1( node->body )
486	);
487	return stmtPostamble( stmt, node );
488	}
489
490	const ast::Stmt * visit( const ast::FinallyStmt * node ) override final {
491	if ( inCache( node ) ) return nullptr;
492	auto stmt = new FinallyStmt( get<CompoundStmt>().accept1( node->body ) );
493	return stmtPostamble( stmt, node );
494	}
495
496	const ast::Stmt * visit( const ast::WaitForStmt * node ) override final {
497	if ( inCache( node ) ) return nullptr;
498	auto stmt = new WaitForStmt;
499	stmt->clauses.reserve( node->clauses.size() );
500	for ( auto clause : node->clauses ) {
501	stmt->clauses.push_back({{
502	get<Expression>().accept1( clause.target.func ),
503	get<Expression>().acceptL( clause.target.args ),
504	},
505	get<Statement>().accept1( clause.stmt ),
506	get<Expression>().accept1( clause.cond ),
507	});
508	}
509	stmt->timeout = {
510	get<Expression>().accept1( node->timeout.time ),
511	get<Statement>().accept1( node->timeout.stmt ),
512	get<Expression>().accept1( node->timeout.cond ),
513	};
514	stmt->orelse = {
515	get<Statement>().accept1( node->orElse.stmt ),
516	get<Expression>().accept1( node->orElse.cond ),
517	};
518	return stmtPostamble( stmt, node );
519	}
520
521	const ast::Stmt * visit( const ast::WithStmt * node ) override final {
522	if ( inCache( node ) ) return nullptr;
523	auto stmt = new WithStmt(
524	get<Expression>().acceptL( node->exprs ),
525	get<Statement>().accept1( node->stmt )
526	);
527	return stmtPostamble( stmt, node );
528	}
529
530	const ast::NullStmt * visit( const ast::NullStmt * node ) override final {
531	if ( inCache( node ) ) return nullptr;
532	auto stmt = new NullStmt();
533	stmtPostamble( stmt, node );
534	return nullptr;
535	}
536
537	const ast::Stmt * visit( const ast::DeclStmt * node ) override final {
538	if ( inCache( node ) ) return nullptr;
539	auto stmt = new DeclStmt( get<Declaration>().accept1( node->decl ) );
540	return stmtPostamble( stmt, node );
541	}
542
543	const ast::Stmt * visit( const ast::ImplicitCtorDtorStmt * node ) override final {
544	if ( inCache( node ) ) return nullptr;
545	auto stmt = new ImplicitCtorDtorStmt{
546	get<Statement>().accept1( node->callStmt )
547	};
548	return stmtPostamble( stmt, node );
549	}
550
551	TypeSubstitution * convertTypeSubstitution(const ast::TypeSubstitution * src) {
552
553	if (!src) return nullptr;
554
555	TypeSubstitution *rslt = new TypeSubstitution();
556
557	for (decltype(src->begin()) src_i = src->begin(); src_i != src->end(); src_i++) {
558	rslt->add( src_i->first,
559	get<Type>().accept1(src_i->second) );
560	}
561
562	for (decltype(src->beginVar()) src_i = src->beginVar(); src_i != src->endVar(); src_i++) {
563	rslt->addVar( src_i->first,
564	get<Expression>().accept1(src_i->second) );
565	}
566
567	return rslt;
568	}
569
570	void convertInferUnion(std::map<UniqueId,ParamEntry> &tgtInferParams,
571	std::vector<UniqueId> &tgtResnSlots,
572	const ast::Expr::InferUnion &srcInferred ) {
573
574	assert( tgtInferParams.empty() );
575	assert( tgtResnSlots.empty() );
576
577	if ( srcInferred.mode == ast::Expr::InferUnion::Params ) {
578	const ast::InferredParams &srcParams = srcInferred.inferParams();
579	for (auto srcParam : srcParams) {
580	tgtInferParams[srcParam.first] = ParamEntry(
581	srcParam.second.decl,
582	get<Type>().accept1(srcParam.second.actualType),
583	get<Type>().accept1(srcParam.second.formalType),
584	get<Expression>().accept1(srcParam.second.expr)
585	);
586	}
587	} else if ( srcInferred.mode == ast::Expr::InferUnion::Slots ) {
588	const ast::ResnSlots &srcSlots = srcInferred.resnSlots();
589	for (auto srcSlot : srcSlots) {
590	tgtResnSlots.push_back(srcSlot);
591	}
592	}
593	}
594
595	Expression * visitBaseExpr_skipResultType(const ast::Expr * src, Expression * tgt) {
596
597	tgt->location = src->location;
598	tgt->env = convertTypeSubstitution(src->env);
599	tgt->extension = src->extension;
600
601	convertInferUnion(tgt->inferParams, tgt->resnSlots, src->inferred);
602	return tgt;
603	}
604
605	Expression * visitBaseExpr(const ast::Expr * src, Expression * tgt) {
606
607	tgt->result = get<Type>().accept1(src->result);
608	return visitBaseExpr_skipResultType(src, tgt);
609	}
610
611	const ast::Expr * visit( const ast::ApplicationExpr * node ) override final {
612	auto expr = visitBaseExpr( node,
613	new ApplicationExpr(
614	get<Expression>().accept1(node->func),
615	get<Expression>().acceptL(node->args)
616	)
617	);
618	this->node = expr;
619	return nullptr;
620	}
621
622	const ast::Expr * visit( const ast::UntypedExpr * node ) override final {
623	auto expr = visitBaseExpr( node,
624	new UntypedExpr(
625	get<Expression>().accept1(node->func),
626	get<Expression>().acceptL(node->args)
627	)
628	);
629	this->node = expr;
630	return nullptr;
631	}
632
633	const ast::Expr * visit( const ast::NameExpr * node ) override final {
634	auto expr = visitBaseExpr( node,
635	new NameExpr(
636	node->name
637	)
638	);
639	this->node = expr;
640	return nullptr;
641	}
642
643	const ast::Expr * visit( const ast::AddressExpr * node ) override final {
644	auto expr = visitBaseExpr( node,
645	new AddressExpr(
646	get<Expression>().accept1(node->arg)
647	)
648	);
649	this->node = expr;
650	return nullptr;
651	}
652
653	const ast::Expr * visit( const ast::LabelAddressExpr * node ) override final {
654	auto expr = visitBaseExpr( node,
655	new LabelAddressExpr(
656	makeLabel(nullptr, node->arg)
657	)
658	);
659	this->node = expr;
660	return nullptr;
661	}
662
663	const ast::Expr * visit( const ast::CastExpr * node ) override final {
664	auto expr = visitBaseExpr( node,
665	new CastExpr(
666	get<Expression>().accept1(node->arg),
667	(node->isGenerated == ast::GeneratedCast)
668	)
669	);
670	this->node = expr;
671	return nullptr;
672	}
673
674	const ast::Expr * visit( const ast::KeywordCastExpr * node ) override final {
675	KeywordCastExpr::Target castTarget = KeywordCastExpr::NUMBER_OF_TARGETS;
676	switch (node->target) {
677	case ast::KeywordCastExpr::Coroutine:
678	castTarget = KeywordCastExpr::Coroutine;
679	break;
680	case ast::KeywordCastExpr::Thread:
681	castTarget = KeywordCastExpr::Thread;
682	break;
683	case ast::KeywordCastExpr::Monitor:
684	castTarget = KeywordCastExpr::Monitor;
685	break;
686	default:
687	break;
688	}
689	assert ( castTarget < KeywordCastExpr::NUMBER_OF_TARGETS );
690	auto expr = visitBaseExpr( node,
691	new KeywordCastExpr(
692	get<Expression>().accept1(node->arg),
693	castTarget
694	)
695	);
696	this->node = expr;
697	return nullptr;
698	}
699
700	const ast::Expr * visit( const ast::VirtualCastExpr * node ) override final {
701	auto expr = visitBaseExpr_skipResultType( node,
702	new VirtualCastExpr(
703	get<Expression>().accept1(node->arg),
704	get<Type>().accept1(node->result)
705	)
706	);
707	this->node = expr;
708	return nullptr;
709	}
710
711	const ast::Expr * visit( const ast::UntypedMemberExpr * node ) override final {
712	auto expr = visitBaseExpr( node,
713	new UntypedMemberExpr(
714	get<Expression>().accept1(node->member),
715	get<Expression>().accept1(node->aggregate)
716	)
717	);
718	this->node = expr;
719	return nullptr;
720	}
721
722	const ast::Expr * visit( const ast::MemberExpr * node ) override final {
723	auto expr = visitBaseExpr( node,
724	new MemberExpr(
725	get<DeclarationWithType>().accept1(node->member),
726	get<Expression>().accept1(node->aggregate)
727	)
728	);
729	this->node = expr;
730	return nullptr;
731	}
732
733	const ast::Expr * visit( const ast::VariableExpr * node ) override final {
734	auto expr = new VariableExpr();
735	visitBaseExpr( node, expr );
736	expr->var = get<DeclarationWithType>().accept1(node->var);
737	Type * type = expr->var->get_type()->clone();
738	if(FunctionType * ft = dynamic_cast<FunctionType*>(type)) {
739	if(node->result.as<ast::PointerType>()) {
740	type = new PointerType({}, ft);
741	}
742	}
743
744	type->set_lvalue( true );
745	expr->result = type ;
746	this->node = expr;
747	return nullptr;
748	}
749
750	const ast::Expr * visit( const ast::ConstantExpr * node ) override final {
751	ConstantExpr *rslt = nullptr;
752	switch ( node->kind ) {
753	case ast::ConstantExpr::Integer:
754	rslt = new ConstantExpr{Constant{
755	get<Type>().accept1( node->result ),
756	node->rep,
757	(unsigned long long) node->intValue()
758	}};
759	break;
760	case ast::ConstantExpr::FloatingPoint:
761	rslt = new ConstantExpr{Constant{
762	get<Type>().accept1(node->result),
763	node->rep,
764	(double) node->floatValue()
765	}};
766	break;
767	case ast::ConstantExpr::String:
768	rslt = new ConstantExpr{Constant{
769	get<Type>().accept1( node->result ),
770	node->rep,
771	(long long unsigned int)0
772	}};
773	break;
774	}
775	assert(rslt);
776	auto expr = visitBaseExpr( node, rslt );
777	this->node = expr;
778	return nullptr;
779	}
780
781	const ast::Expr * visit( const ast::SizeofExpr * node ) override final {
782	assert (node->expr \|\| node->type);
783	assert (! (node->expr && node->type));
784	SizeofExpr *rslt;
785	if (node->expr) {
786	rslt = new SizeofExpr(
787	get<Expression>().accept1(node->expr)
788	);
789	assert (!rslt->isType);
790	}
791	else {
792	assert(node->type);
793	rslt = new SizeofExpr(
794	get<Type>().accept1(node->type)
795	);
796	assert (rslt->isType);
797	}
798	auto expr = visitBaseExpr( node, rslt );
799	this->node = expr;
800	return nullptr;
801	}
802
803	const ast::Expr * visit( const ast::AlignofExpr * node ) override final {
804	assert (node->expr \|\| node->type);
805	assert (! (node->expr && node->type));
806	AlignofExpr *rslt;
807	if (node->expr) {
808	rslt = new AlignofExpr(
809	get<Expression>().accept1(node->expr)
810	);
811	assert (!rslt->isType);
812	}
813	else {
814	assert(node->type);
815	rslt = new AlignofExpr(
816	get<Type>().accept1(node->type)
817	);
818	assert (rslt->isType);
819	}
820	auto expr = visitBaseExpr( node, rslt );
821	this->node = expr;
822	return nullptr;
823	}
824
825	const ast::Expr * visit( const ast::UntypedOffsetofExpr * node ) override final {
826	auto expr = visitBaseExpr( node,
827	new UntypedOffsetofExpr(
828	get<Type>().accept1(node->type),
829	node->member
830	)
831	);
832	this->node = expr;
833	return nullptr;
834	}
835
836	const ast::Expr * visit( const ast::OffsetofExpr * node ) override final {
837	auto expr = visitBaseExpr( node,
838	new OffsetofExpr(
839	get<Type>().accept1(node->type),
840	get<DeclarationWithType>().accept1(node->member)
841	)
842	);
843	this->node = expr;
844	return nullptr;
845	}
846
847	const ast::Expr * visit( const ast::OffsetPackExpr * node ) override final {
848	auto expr = visitBaseExpr( node,
849	new OffsetPackExpr(
850	get<StructInstType>().accept1(node->type)
851	)
852	);
853	this->node = expr;
854	return nullptr;
855	}
856
857	const ast::Expr * visit( const ast::LogicalExpr * node ) override final {
858	assert (node->isAnd == ast::LogicalFlag::AndExpr \|\|
859	node->isAnd == ast::LogicalFlag::OrExpr );
860	auto expr = visitBaseExpr( node,
861	new LogicalExpr(
862	get<Expression>().accept1(node->arg1),
863	get<Expression>().accept1(node->arg2),
864	(node->isAnd == ast::LogicalFlag::AndExpr)
865	)
866	);
867	this->node = expr;
868	return nullptr;
869	}
870
871	const ast::Expr * visit( const ast::ConditionalExpr * node ) override final {
872	auto expr = visitBaseExpr( node,
873	new ConditionalExpr(
874	get<Expression>().accept1(node->arg1),
875	get<Expression>().accept1(node->arg2),
876	get<Expression>().accept1(node->arg3)
877	)
878	);
879	this->node = expr;
880	return nullptr;
881	}
882
883	const ast::Expr * visit( const ast::CommaExpr * node ) override final {
884	auto expr = visitBaseExpr( node,
885	new CommaExpr(
886	get<Expression>().accept1(node->arg1),
887	get<Expression>().accept1(node->arg2)
888	)
889	);
890	this->node = expr;
891	return nullptr;
892	}
893
894	const ast::Expr * visit( const ast::TypeExpr * node ) override final {
895	auto expr = visitBaseExpr( node,
896	new TypeExpr(
897	get<Type>().accept1(node->type)
898	)
899	);
900	this->node = expr;
901	return nullptr;
902	}
903
904	const ast::Expr * visit( const ast::AsmExpr * node ) override final {
905	auto expr = visitBaseExpr( node,
906	new AsmExpr(
907	get<Expression>().accept1(node->inout),
908	get<Expression>().accept1(node->constraint),
909	get<Expression>().accept1(node->operand)
910	)
911	);
912	this->node = expr;
913	return nullptr;
914	}
915
916	const ast::Expr * visit( const ast::ImplicitCopyCtorExpr * node ) override final {
917	auto rslt = new ImplicitCopyCtorExpr(
918	get<ApplicationExpr>().accept1(node->callExpr)
919	);
920
921	auto expr = visitBaseExpr( node, rslt );
922	this->node = expr;
923	return nullptr;
924	}
925
926	const ast::Expr * visit( const ast::ConstructorExpr * node ) override final {
927	auto expr = visitBaseExpr( node,
928	new ConstructorExpr(
929	get<Expression>().accept1(node->callExpr)
930	)
931	);
932	this->node = expr;
933	return nullptr;
934	}
935
936	const ast::Expr * visit( const ast::CompoundLiteralExpr * node ) override final {
937	auto expr = visitBaseExpr_skipResultType( node,
938	new CompoundLiteralExpr(
939	get<Type>().accept1(node->result),
940	get<Initializer>().accept1(node->init)
941	)
942	);
943	this->node = expr;
944	return nullptr;
945	}
946
947	const ast::Expr * visit( const ast::RangeExpr * node ) override final {
948	auto expr = visitBaseExpr( node,
949	new RangeExpr(
950	get<Expression>().accept1(node->low),
951	get<Expression>().accept1(node->high)
952	)
953	);
954	this->node = expr;
955	return nullptr;
956	}
957
958	const ast::Expr * visit( const ast::UntypedTupleExpr * node ) override final {
959	auto expr = visitBaseExpr( node,
960	new UntypedTupleExpr(
961	get<Expression>().acceptL(node->exprs)
962	)
963	);
964	this->node = expr;
965	return nullptr;
966	}
967
968	const ast::Expr * visit( const ast::TupleExpr * node ) override final {
969	auto expr = visitBaseExpr( node,
970	new UntypedTupleExpr(
971	get<Expression>().acceptL(node->exprs)
972	)
973	);
974	this->node = expr;
975	return nullptr;
976	}
977
978	const ast::Expr * visit( const ast::TupleIndexExpr * node ) override final {
979	auto expr = visitBaseExpr( node,
980	new TupleIndexExpr(
981	get<Expression>().accept1(node->tuple),
982	node->index
983	)
984	);
985	this->node = expr;
986	return nullptr;
987	}
988
989	const ast::Expr * visit( const ast::TupleAssignExpr * node ) override final {
990	auto expr = visitBaseExpr( node,
991	new TupleAssignExpr(
992	get<StmtExpr>().accept1(node->stmtExpr)
993	)
994	);
995	this->node = expr;
996	return nullptr;
997	}
998
999	const ast::Expr * visit( const ast::StmtExpr * node ) override final {
1000	auto rslt = new StmtExpr(
1001	get<CompoundStmt>().accept1(node->stmts)
1002	);
1003
1004	rslt->returnDecls = get<ObjectDecl>().acceptL(node->returnDecls);
1005	rslt->dtors = get<Expression>().acceptL(node->dtors);
1006
1007	auto expr = visitBaseExpr( node, rslt );
1008	this->node = expr;
1009	return nullptr;
1010	}
1011
1012	const ast::Expr * visit( const ast::UniqueExpr * node ) override final {
1013	auto rslt = new UniqueExpr(
1014	get<Expression>().accept1(node->expr)
1015	);
1016
1017	rslt->object = get<ObjectDecl> ().accept1(node->object);
1018	rslt->var = get<VariableExpr>().accept1(node->var);
1019
1020	auto expr = visitBaseExpr( node, rslt );
1021	this->node = expr;
1022	return nullptr;
1023	}
1024
1025	const ast::Expr * visit( const ast::UntypedInitExpr * node ) override final {
1026	std::list<InitAlternative> initAlts;
1027	for (auto ia : node->initAlts) {
1028	initAlts.push_back(InitAlternative(
1029	get<Type> ().accept1(ia.type),
1030	get<Designation>().accept1(ia.designation)
1031	));
1032	}
1033	auto expr = visitBaseExpr( node,
1034	new UntypedInitExpr(
1035	get<Expression>().accept1(node->expr),
1036	initAlts
1037	)
1038	);
1039	this->node = expr;
1040	return nullptr;
1041	}
1042
1043	const ast::Expr * visit( const ast::InitExpr * node ) override final {
1044	auto expr = visitBaseExpr( node,
1045	new InitExpr(
1046	get<Expression>().accept1(node->expr),
1047	get<Designation>().accept1(node->designation)
1048	)
1049	);
1050	this->node = expr;
1051	return nullptr;
1052	}
1053
1054	const ast::Expr * visit( const ast::DeletedExpr * node ) override final {
1055	auto expr = visitBaseExpr( node,
1056	new DeletedExpr(
1057	get<Expression>().accept1(node->expr),
1058	inCache(node->deleteStmt) ?
1059	this->node :
1060	get<BaseSyntaxNode>().accept1(node->deleteStmt)
1061	)
1062	);
1063	this->node = expr;
1064	return nullptr;
1065	}
1066
1067	const ast::Expr * visit( const ast::DefaultArgExpr * node ) override final {
1068	auto expr = visitBaseExpr( node,
1069	new DefaultArgExpr(
1070	get<Expression>().accept1(node->expr)
1071	)
1072	);
1073	this->node = expr;
1074	return nullptr;
1075	}
1076
1077	const ast::Expr * visit( const ast::GenericExpr * node ) override final {
1078	std::list<GenericExpr::Association> associations;
1079	for (auto association : node->associations) {
1080	associations.push_back(GenericExpr::Association(
1081	get<Type> ().accept1(association.type),
1082	get<Expression>().accept1(association.expr)
1083	));
1084	}
1085	auto expr = visitBaseExpr( node,
1086	new GenericExpr(
1087	get<Expression>().accept1(node->control),
1088	associations
1089	)
1090	);
1091	this->node = expr;
1092	return nullptr;
1093	}
1094
1095	const ast::Type * visit( const ast::VoidType * node ) override final {
1096	this->node = new VoidType{ cv( node ) };
1097	return nullptr;
1098	}
1099
1100	const ast::Type * visit( const ast::BasicType * node ) override final {
1101	auto type = new BasicType{ cv( node ), (BasicType::Kind)(unsigned)node->kind };
1102	// I believe this should always be a BasicType.
1103	if ( sizeType == node ) {
1104	Validate::SizeType = type;
1105	}
1106	this->node = type;
1107	return nullptr;
1108	}
1109
1110	const ast::Type * visit( const ast::PointerType * node ) override final {
1111	this->node = new PointerType{
1112	cv( node ),
1113	get<Type>().accept1( node->base ),
1114	get<Expression>().accept1( node->dimension ),
1115	(bool)node->isVarLen,
1116	(bool)node->isStatic
1117	};
1118	return nullptr;
1119	}
1120
1121	const ast::Type * visit( const ast::ArrayType * node ) override final {
1122	this->node = new ArrayType{
1123	cv( node ),
1124	get<Type>().accept1( node->base ),
1125	get<Expression>().accept1( node->dimension ),
1126	(bool)node->isVarLen,
1127	(bool)node->isStatic
1128	};
1129	return nullptr;
1130	}
1131
1132	const ast::Type * visit( const ast::ReferenceType * node ) override final {
1133	this->node = new ReferenceType{
1134	cv( node ),
1135	get<Type>().accept1( node->base )
1136	};
1137	return nullptr;
1138	}
1139
1140	const ast::Type * visit( const ast::QualifiedType * node ) override final {
1141	this->node = new QualifiedType{
1142	cv( node ),
1143	get<Type>().accept1( node->parent ),
1144	get<Type>().accept1( node->child )
1145	};
1146	return nullptr;
1147	}
1148
1149	const ast::Type * visit( const ast::FunctionType * node ) override final {
1150	auto ty = new FunctionType {
1151	cv( node ),
1152	(bool)node->isVarArgs
1153	};
1154	ty->returnVals = get<DeclarationWithType>().acceptL( node->returns );
1155	ty->parameters = get<DeclarationWithType>().acceptL( node->params );
1156	ty->forall = get<TypeDecl>().acceptL( node->forall );
1157	this->node = ty;
1158	return nullptr;
1159	}
1160
1161	void postvisit( const ast::ReferenceToType * old, ReferenceToType * ty ) {
1162	ty->forall = get<TypeDecl>().acceptL( old->forall );
1163	ty->parameters = get<Expression>().acceptL( old->params );
1164	ty->hoistType = old->hoistType;
1165	}
1166
1167	const ast::Type * visit( const ast::StructInstType * node ) override final {
1168	StructInstType * ty;
1169	if ( node->base ) {
1170	ty = new StructInstType{
1171	cv( node ),
1172	get<StructDecl>().accept1( node->base ),
1173	get<Attribute>().acceptL( node->attributes )
1174	};
1175	} else {
1176	ty = new StructInstType{
1177	cv( node ),
1178	node->name,
1179	get<Attribute>().acceptL( node->attributes )
1180	};
1181	}
1182	postvisit( node, ty );
1183	this->node = ty;
1184	return nullptr;
1185	}
1186
1187	const ast::Type * visit( const ast::UnionInstType * node ) override final {
1188	UnionInstType * ty;
1189	if ( node->base ) {
1190	ty = new UnionInstType{
1191	cv( node ),
1192	get<UnionDecl>().accept1( node->base ),
1193	get<Attribute>().acceptL( node->attributes )
1194	};
1195	} else {
1196	ty = new UnionInstType{
1197	cv( node ),
1198	node->name,
1199	get<Attribute>().acceptL( node->attributes )
1200	};
1201	}
1202	postvisit( node, ty );
1203	this->node = ty;
1204	return nullptr;
1205	}
1206
1207	const ast::Type * visit( const ast::EnumInstType * node ) override final {
1208	EnumInstType * ty;
1209	if ( node->base ) {
1210	ty = new EnumInstType{
1211	cv( node ),
1212	get<EnumDecl>().accept1( node->base ),
1213	get<Attribute>().acceptL( node->attributes )
1214	};
1215	} else {
1216	ty = new EnumInstType{
1217	cv( node ),
1218	node->name,
1219	get<Attribute>().acceptL( node->attributes )
1220	};
1221	}
1222	postvisit( node, ty );
1223	this->node = ty;
1224	return nullptr;
1225	}
1226
1227	const ast::Type * visit( const ast::TraitInstType * node ) override final {
1228	TraitInstType * ty;
1229	if ( node->base ) {
1230	ty = new TraitInstType{
1231	cv( node ),
1232	get<TraitDecl>().accept1( node->base ),
1233	get<Attribute>().acceptL( node->attributes )
1234	};
1235	} else {
1236	ty = new TraitInstType{
1237	cv( node ),
1238	node->name,
1239	get<Attribute>().acceptL( node->attributes )
1240	};
1241	}
1242	postvisit( node, ty );
1243	this->node = ty;
1244	return nullptr;
1245	}
1246
1247	const ast::Type * visit( const ast::TypeInstType * node ) override final {
1248	TypeInstType * ty;
1249	if ( node->base ) {
1250	ty = new TypeInstType{
1251	cv( node ),
1252	node->name,
1253	get<TypeDecl>().accept1( node->base ),
1254	get<Attribute>().acceptL( node->attributes )
1255	};
1256	} else {
1257	ty = new TypeInstType{
1258	cv( node ),
1259	node->name,
1260	node->kind == ast::TypeVar::Ftype,
1261	get<Attribute>().acceptL( node->attributes )
1262	};
1263	}
1264	postvisit( node, ty );
1265	this->node = ty;
1266	return nullptr;
1267	}
1268
1269	const ast::Type * visit( const ast::TupleType * node ) override final {
1270	this->node = new TupleType{
1271	cv( node ),
1272	get<Type>().acceptL( node->types )
1273	// members generated by TupleType c'tor
1274	};
1275	return nullptr;
1276	}
1277
1278	const ast::Type * visit( const ast::TypeofType * node ) override final {
1279	this->node = new TypeofType{
1280	cv( node ),
1281	get<Expression>().accept1( node->expr ),
1282	(bool)node->kind
1283	};
1284	return nullptr;
1285	}
1286
1287	const ast::Type * visit( const ast::VarArgsType * node ) override final {
1288	this->node = new VarArgsType{ cv( node ) };
1289	return nullptr;
1290	}
1291
1292	const ast::Type * visit( const ast::ZeroType * node ) override final {
1293	this->node = new ZeroType{ cv( node ) };
1294	return nullptr;
1295	}
1296
1297	const ast::Type * visit( const ast::OneType * node ) override final {
1298	this->node = new OneType{ cv( node ) };
1299	return nullptr;
1300	}
1301
1302	const ast::Type * visit( const ast::GlobalScopeType * ) override final {
1303	this->node = new GlobalScopeType{};
1304	return nullptr;
1305	}
1306
1307	const ast::Designation * visit( const ast::Designation * node ) override final {
1308	auto designation = new Designation( get<Expression>().acceptL( node->designators ) );
1309	designation->location = node->location;
1310	this->node = designation;
1311	return nullptr;
1312	}
1313
1314	const ast::Init * visit( const ast::SingleInit * node ) override final {
1315	auto init = new SingleInit(
1316	get<Expression>().accept1( node->value ),
1317	ast::MaybeConstruct == node->maybeConstructed
1318	);
1319	init->location = node->location;
1320	this->node = init;
1321	return nullptr;
1322	}
1323
1324	const ast::Init * visit( const ast::ListInit * node ) override final {
1325	auto init = new ListInit(
1326	get<Initializer>().acceptL( node->initializers ),
1327	get<Designation>().acceptL( node->designations ),
1328	ast::MaybeConstruct == node->maybeConstructed
1329	);
1330	init->location = node->location;
1331	this->node = init;
1332	return nullptr;
1333	}
1334
1335	const ast::Init * visit( const ast::ConstructorInit * node ) override final {
1336	auto init = new ConstructorInit(
1337	get<Statement>().accept1( node->ctor ),
1338	get<Statement>().accept1( node->dtor ),
1339	get<Initializer>().accept1( node->init )
1340	);
1341	init->location = node->location;
1342	this->node = init;
1343	return nullptr;
1344	}
1345
1346	const ast::Attribute * visit( const ast::Attribute * node ) override final {
1347	auto attr = new Attribute(
1348	node->name,
1349	get<Expression>().acceptL(node->params)
1350	);
1351	this->node = attr;
1352	return nullptr;
1353	}
1354
1355	const ast::TypeSubstitution * visit( const ast::TypeSubstitution * node ) override final {
1356	// Handled by convertTypeSubstitution helper instead.
1357	// TypeSubstitution is not a node in the old model, so the conversion result wouldn't fit in this->node.
1358	assert( 0 );
1359	(void)node;
1360	return nullptr;
1361	}
1362	};
1363
1364	std::list< Declaration * > convert( const std::list< ast::ptr< ast::Decl > > && translationUnit ) {
1365	ConverterNewToOld c;
1366	std::list< Declaration * > decls;
1367	for(auto d : translationUnit) {
1368	decls.emplace_back( c.decl( d ) );
1369	}
1370	return decls;
1371	}
1372
1373	//================================================================================================
1374
1375	class ConverterOldToNew : public Visitor {
1376	public:
1377	ast::Decl * decl() {
1378	return strict_dynamic_cast< ast::Decl * >( node );
1379	}
1380
1381	ConverterOldToNew() = default;
1382	ConverterOldToNew(const ConverterOldToNew &) = delete;
1383	ConverterOldToNew(ConverterOldToNew &&) = delete;
1384	private:
1385	/// conversion output
1386	ast::Node * node = nullptr;
1387	/// cache of nodes that might be referenced by readonly<> for de-duplication
1388	std::unordered_map< BaseSyntaxNode , ast::Node > cache = {};
1389
1390	// Local Utilities:
1391
1392	#define construct(T, key, ...) ({ \
1393	void * data = ::operator new(sizeof(T)); \
1394	cache.emplace( key, (T*)data ); \
1395	new (data) T( __VA_ARGS__ ); \
1396	})
1397
1398	template<typename NewT, typename OldT>
1399	NewT * getAccept1( OldT old ) {
1400	if ( ! old ) return nullptr;
1401	old->accept(*this);
1402	ast::Node * ret = node;
1403	node = nullptr;
1404	return strict_dynamic_cast< NewT * >( ret );
1405	}
1406
1407	# define GET_ACCEPT_1(child, type) \
1408	getAccept1< ast::type, decltype( old->child ) >( old->child )
1409
1410	template<typename NewT, typename OldC>
1411	std::vector< ast::ptr<NewT> > getAcceptV( OldC& old ) {
1412	std::vector< ast::ptr<NewT> > ret;
1413	ret.reserve( old.size() );
1414	for ( auto a : old ) {
1415	a->accept( *this );
1416	ret.emplace_back( strict_dynamic_cast< NewT * >(node) );
1417	node = nullptr;
1418	}
1419	return ret;
1420	}
1421
1422	# define GET_ACCEPT_V(child, type) \
1423	getAcceptV< ast::type, decltype( old->child ) >( old->child )
1424
1425	template<typename NewT, typename OldC>
1426	std::deque< ast::ptr<NewT> > getAcceptD( OldC& old ) {
1427	std::deque< ast::ptr<NewT> > ret;
1428	for ( auto a : old ) {
1429	a->accept( *this );
1430	ret.emplace_back( strict_dynamic_cast< NewT * >(node) );
1431	node = nullptr;
1432	}
1433	return ret;
1434	}
1435
1436	# define GET_ACCEPT_D(child, type) \
1437	getAcceptD< ast::type, decltype( old->child ) >( old->child )
1438
1439	ast::Label make_label(Label* old) {
1440	return ast::Label(
1441	old->labelled->location,
1442	old->name,
1443	GET_ACCEPT_V(attributes, Attribute)
1444	);
1445	}
1446
1447	template<template <class...> class C>
1448	C<ast::Label> make_labels(C<Label> olds) {
1449	C<ast::Label> ret;
1450	for (auto oldn : olds) {
1451	ret.push_back( make_label( &oldn ) );
1452	}
1453	return ret;
1454	}
1455
1456	# define GET_LABELS_V(labels) \
1457	to<std::vector>::from( make_labels( std::move( labels ) ) )
1458
1459	static ast::CV::Qualifiers cv( Type * ty ) { return { ty->get_qualifiers().val }; }
1460
1461	/// returns true and sets `node` if in cache
1462	bool inCache( BaseSyntaxNode * old ) {
1463	auto it = cache.find( old );
1464	if ( it == cache.end() ) return false;
1465	node = it->second;
1466	return true;
1467	}
1468
1469	// Now all the visit functions:
1470
1471	virtual void visit( ObjectDecl * old ) override final {
1472	if( old->name == "tmp" ) {
1473	std::cerr << "building parameters for" << (void*)old << std::endl;
1474	}
1475	auto&& type = GET_ACCEPT_1(type, Type);
1476	auto&& init = GET_ACCEPT_1(init, Init);
1477	auto&& bfwd = GET_ACCEPT_1(bitfieldWidth, Expr);
1478	auto&& attr = GET_ACCEPT_V(attributes, Attribute);
1479	if( old->name == "tmp" ) {
1480	std::cerr << "checking cache for " << (void*)old << std::endl;
1481	}
1482	if ( inCache( old ) ) {
1483	if( old->name == "tmp" ) {
1484	std::cerr << (void)old << "(old) in cache " << (void)this->node << "(new)" << std::endl;
1485	}
1486	return;
1487	}
1488	auto decl = new ast::ObjectDecl(
1489	old->location,
1490	old->name,
1491	type,
1492	init,
1493	{ old->get_storageClasses().val },
1494	{ old->linkage.val },
1495	bfwd,
1496	std::move(attr),
1497	{ old->get_funcSpec().val }
1498	);
1499	cache.emplace(old, decl);
1500	if( old->name == "tmp" ) {
1501	std::cerr << (void)old << "(old) added to cache with " << (void)decl << "(new)" << std::endl;
1502	}
1503	assert(cache.find( old ) != cache.end());
1504	decl->scopeLevel = old->scopeLevel;
1505	decl->mangleName = old->mangleName;
1506	decl->isDeleted = old->isDeleted;
1507	decl->uniqueId = old->uniqueId;
1508	decl->extension = old->extension;
1509
1510	this->node = decl;
1511
1512	if( old->name == "tmp" ) {
1513	std::cerr << (void)old << "(old) created " << (void)this->node << "(new)" << std::endl;
1514	}
1515	}
1516
1517	virtual void visit( FunctionDecl * old ) override final {
1518	if ( inCache( old ) ) return;
1519	auto decl = new ast::FunctionDecl{
1520	old->location,
1521	old->name,
1522	GET_ACCEPT_1(type, FunctionType),
1523	{},
1524	{ old->storageClasses.val },
1525	{ old->linkage.val },
1526	GET_ACCEPT_V(attributes, Attribute),
1527	{ old->get_funcSpec().val }
1528	};
1529	cache.emplace( old, decl );
1530	decl->withExprs = GET_ACCEPT_V(withExprs, Expr);
1531	decl->stmts = GET_ACCEPT_1(statements, CompoundStmt);
1532	decl->scopeLevel = old->scopeLevel;
1533	decl->mangleName = old->mangleName;
1534	decl->isDeleted = old->isDeleted;
1535	decl->uniqueId = old->uniqueId;
1536	decl->extension = old->extension;
1537
1538	this->node = decl;
1539
1540	if ( Validate::dereferenceOperator == old ) {
1541	dereferenceOperator = decl;
1542	}
1543
1544	if ( Validate::dtorStructDestroy == old ) {
1545	dtorStructDestroy = decl;
1546	}
1547	}
1548
1549	virtual void visit( StructDecl * old ) override final {
1550	if ( inCache( old ) ) return;
1551	auto decl = new ast::StructDecl(
1552	old->location,
1553	old->name,
1554	old->kind,
1555	GET_ACCEPT_V(attributes, Attribute),
1556	{ old->linkage.val }
1557	);
1558	cache.emplace( old, decl );
1559	decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
1560	decl->body = old->body;
1561	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1562	decl->members = GET_ACCEPT_V(members, Decl);
1563	decl->extension = old->extension;
1564	decl->uniqueId = old->uniqueId;
1565	decl->storage = { old->storageClasses.val };
1566
1567	this->node = decl;
1568
1569	if ( Validate::dtorStruct == old ) {
1570	dtorStruct = decl;
1571	}
1572	}
1573
1574	virtual void visit( UnionDecl * old ) override final {
1575	if ( inCache( old ) ) return;
1576	auto decl = new ast::UnionDecl(
1577	old->location,
1578	old->name,
1579	GET_ACCEPT_V(attributes, Attribute),
1580	{ old->linkage.val }
1581	);
1582	cache.emplace( old, decl );
1583	decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
1584	decl->body = old->body;
1585	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1586	decl->members = GET_ACCEPT_V(members, Decl);
1587	decl->extension = old->extension;
1588	decl->uniqueId = old->uniqueId;
1589	decl->storage = { old->storageClasses.val };
1590
1591	this->node = decl;
1592	}
1593
1594	virtual void visit( EnumDecl * old ) override final {
1595	if ( inCache( old ) ) return;
1596	auto decl = new ast::EnumDecl(
1597	old->location,
1598	old->name,
1599	GET_ACCEPT_V(attributes, Attribute),
1600	{ old->linkage.val }
1601	);
1602	cache.emplace( old, decl );
1603	decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
1604	decl->body = old->body;
1605	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1606	decl->members = GET_ACCEPT_V(members, Decl);
1607	decl->extension = old->extension;
1608	decl->uniqueId = old->uniqueId;
1609	decl->storage = { old->storageClasses.val };
1610
1611	this->node = decl;
1612	}
1613
1614	virtual void visit( TraitDecl * old ) override final {
1615	if ( inCache( old ) ) return;
1616	auto decl = new ast::TraitDecl(
1617	old->location,
1618	old->name,
1619	GET_ACCEPT_V(attributes, Attribute),
1620	{ old->linkage.val }
1621	);
1622	cache.emplace( old, decl );
1623	decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
1624	decl->body = old->body;
1625	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1626	decl->members = GET_ACCEPT_V(members, Decl);
1627	decl->extension = old->extension;
1628	decl->uniqueId = old->uniqueId;
1629	decl->storage = { old->storageClasses.val };
1630
1631	this->node = decl;
1632	}
1633
1634	virtual void visit( TypeDecl * old ) override final {
1635	if ( inCache( old ) ) return;
1636	auto decl = new ast::TypeDecl{
1637	old->location,
1638	old->name,
1639	{ old->storageClasses.val },
1640	GET_ACCEPT_1(base, Type),
1641	(ast::TypeVar::Kind)(unsigned)old->kind,
1642	old->sized,
1643	GET_ACCEPT_1(init, Type)
1644	};
1645	cache.emplace( old, decl );
1646	decl->assertions = GET_ACCEPT_V(assertions, DeclWithType);
1647	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1648	decl->extension = old->extension;
1649	decl->uniqueId = old->uniqueId;
1650
1651	this->node = decl;
1652	}
1653
1654	virtual void visit( TypedefDecl * old ) override final {
1655	auto decl = new ast::TypedefDecl(
1656	old->location,
1657	old->name,
1658	{ old->storageClasses.val },
1659	GET_ACCEPT_1(base, Type),
1660	{ old->linkage.val }
1661	);
1662	decl->assertions = GET_ACCEPT_V(assertions, DeclWithType);
1663	decl->params = GET_ACCEPT_V(parameters, TypeDecl);
1664	decl->extension = old->extension;
1665	decl->uniqueId = old->uniqueId;
1666	decl->storage = { old->storageClasses.val };
1667
1668	this->node = decl;
1669	}
1670
1671	virtual void visit( AsmDecl * old ) override final {
1672	auto decl = new ast::AsmDecl{
1673	old->location,
1674	GET_ACCEPT_1(stmt, AsmStmt)
1675	};
1676	decl->extension = old->extension;
1677	decl->uniqueId = old->uniqueId;
1678	decl->storage = { old->storageClasses.val };
1679
1680	this->node = decl;
1681	}
1682
1683	virtual void visit( StaticAssertDecl * old ) override final {
1684	auto decl = new ast::StaticAssertDecl{
1685	old->location,
1686	GET_ACCEPT_1(condition, Expr),
1687	GET_ACCEPT_1(message, ConstantExpr)
1688	};
1689	decl->extension = old->extension;
1690	decl->uniqueId = old->uniqueId;
1691	decl->storage = { old->storageClasses.val };
1692
1693	this->node = decl;
1694	}
1695
1696	virtual void visit( CompoundStmt * old ) override final {
1697	if ( inCache( old ) ) return;
1698	auto stmt = new ast::CompoundStmt(
1699	old->location,
1700	to<std::list>::from( GET_ACCEPT_V(kids, Stmt) ),
1701	GET_LABELS_V(old->labels)
1702	);
1703
1704	this->node = stmt;
1705	cache.emplace( old, this->node );
1706	}
1707
1708	virtual void visit( ExprStmt * old ) override final {
1709	if ( inCache( old ) ) return;
1710	this->node = new ast::ExprStmt(
1711	old->location,
1712	GET_ACCEPT_1(expr, Expr),
1713	GET_LABELS_V(old->labels)
1714	);
1715	cache.emplace( old, this->node );
1716	}
1717
1718	virtual void visit( AsmStmt * old ) override final {
1719	if ( inCache( old ) ) return;
1720	this->node = new ast::AsmStmt(
1721	old->location,
1722	old->voltile,
1723	GET_ACCEPT_1(instruction, Expr),
1724	GET_ACCEPT_V(output, Expr),
1725	GET_ACCEPT_V(input, Expr),
1726	GET_ACCEPT_V(clobber, ConstantExpr),
1727	GET_LABELS_V(old->gotolabels),
1728	GET_LABELS_V(old->labels)
1729	);
1730	cache.emplace( old, this->node );
1731	}
1732
1733	virtual void visit( DirectiveStmt * old ) override final {
1734	if ( inCache( old ) ) return;
1735	this->node = new ast::DirectiveStmt(
1736	old->location,
1737	old->directive,
1738	GET_LABELS_V(old->labels)
1739	);
1740	cache.emplace( old, this->node );
1741	}
1742
1743	virtual void visit( IfStmt * old ) override final {
1744	if ( inCache( old ) ) return;
1745	this->node = new ast::IfStmt(
1746	old->location,
1747	GET_ACCEPT_1(condition, Expr),
1748	GET_ACCEPT_1(thenPart, Stmt),
1749	GET_ACCEPT_1(elsePart, Stmt),
1750	GET_ACCEPT_V(initialization, Stmt),
1751	GET_LABELS_V(old->labels)
1752	);
1753	cache.emplace( old, this->node );
1754	}
1755
1756	virtual void visit( SwitchStmt * old ) override final {
1757	if ( inCache( old ) ) return;
1758	this->node = new ast::SwitchStmt(
1759	old->location,
1760	GET_ACCEPT_1(condition, Expr),
1761	GET_ACCEPT_V(statements, Stmt),
1762	GET_LABELS_V(old->labels)
1763	);
1764	cache.emplace( old, this->node );
1765	}
1766
1767	virtual void visit( CaseStmt * old ) override final {
1768	if ( inCache( old ) ) return;
1769	this->node = new ast::CaseStmt(
1770	old->location,
1771	GET_ACCEPT_1(condition, Expr),
1772	GET_ACCEPT_V(stmts, Stmt),
1773	GET_LABELS_V(old->labels)
1774	);
1775	cache.emplace( old, this->node );
1776	}
1777
1778	virtual void visit( WhileStmt * old ) override final {
1779	if ( inCache( old ) ) return;
1780	this->node = new ast::WhileStmt(
1781	old->location,
1782	GET_ACCEPT_1(condition, Expr),
1783	GET_ACCEPT_1(body, Stmt),
1784	GET_ACCEPT_V(initialization, Stmt),
1785	old->isDoWhile,
1786	GET_LABELS_V(old->labels)
1787	);
1788	cache.emplace( old, this->node );
1789	}
1790
1791	virtual void visit( ForStmt * old ) override final {
1792	if ( inCache( old ) ) return;
1793	this->node = new ast::ForStmt(
1794	old->location,
1795	GET_ACCEPT_V(initialization, Stmt),
1796	GET_ACCEPT_1(condition, Expr),
1797	GET_ACCEPT_1(increment, Expr),
1798	GET_ACCEPT_1(body, Stmt),
1799	GET_LABELS_V(old->labels)
1800	);
1801	cache.emplace( old, this->node );
1802	}
1803
1804	virtual void visit( BranchStmt * old ) override final {
1805	if ( inCache( old ) ) return;
1806	if (old->computedTarget) {
1807	this->node = new ast::BranchStmt(
1808	old->location,
1809	GET_ACCEPT_1(computedTarget, Expr),
1810	GET_LABELS_V(old->labels)
1811	);
1812	} else {
1813	ast::BranchStmt::Kind kind;
1814	switch (old->type) {
1815	#define CASE(n) \
1816	case BranchStmt::n: \
1817	kind = ast::BranchStmt::n; \
1818	break
1819	CASE(Goto);
1820	CASE(Break);
1821	CASE(Continue);
1822	CASE(FallThrough);
1823	CASE(FallThroughDefault);
1824	#undef CASE
1825	default:
1826	assertf(false, "Invalid BranchStmt::Type %d\n", old->type);
1827	}
1828
1829	Label label = old->originalTarget;
1830	auto stmt = new ast::BranchStmt(
1831	old->location,
1832	kind,
1833	make_label(&label),
1834	GET_LABELS_V(old->labels)
1835	);
1836	stmt->target = make_label(&old->target);
1837	this->node = stmt;
1838	}
1839	cache.emplace( old, this->node );
1840	}
1841
1842	virtual void visit( ReturnStmt * old ) override final {
1843	if ( inCache( old ) ) return;
1844	this->node = new ast::ReturnStmt(
1845	old->location,
1846	GET_ACCEPT_1(expr, Expr),
1847	GET_LABELS_V(old->labels)
1848	);
1849	cache.emplace( old, this->node );
1850	}
1851
1852	virtual void visit( ThrowStmt * old ) override final {
1853	if ( inCache( old ) ) return;
1854	ast::ExceptionKind kind;
1855	switch (old->kind) {
1856	case ThrowStmt::Terminate:
1857	kind = ast::ExceptionKind::Terminate;
1858	break;
1859	case ThrowStmt::Resume:
1860	kind = ast::ExceptionKind::Resume;
1861	break;
1862	default:
1863	assertf(false, "Invalid ThrowStmt::Kind %d\n", old->kind);
1864	}
1865
1866	this->node = new ast::ThrowStmt(
1867	old->location,
1868	kind,
1869	GET_ACCEPT_1(expr, Expr),
1870	GET_ACCEPT_1(target, Expr),
1871	GET_LABELS_V(old->labels)
1872	);
1873	cache.emplace( old, this->node );
1874	}
1875
1876	virtual void visit( TryStmt * old ) override final {
1877	if ( inCache( old ) ) return;
1878	this->node = new ast::TryStmt(
1879	old->location,
1880	GET_ACCEPT_1(block, CompoundStmt),
1881	GET_ACCEPT_V(handlers, CatchStmt),
1882	GET_ACCEPT_1(finallyBlock, FinallyStmt),
1883	GET_LABELS_V(old->labels)
1884	);
1885	cache.emplace( old, this->node );
1886	}
1887
1888	virtual void visit( CatchStmt * old ) override final {
1889	if ( inCache( old ) ) return;
1890	ast::ExceptionKind kind;
1891	switch (old->kind) {
1892	case CatchStmt::Terminate:
1893	kind = ast::ExceptionKind::Terminate;
1894	break;
1895	case CatchStmt::Resume:
1896	kind = ast::ExceptionKind::Resume;
1897	break;
1898	default:
1899	assertf(false, "Invalid CatchStmt::Kind %d\n", old->kind);
1900	}
1901
1902	this->node = new ast::CatchStmt(
1903	old->location,
1904	kind,
1905	GET_ACCEPT_1(decl, Decl),
1906	GET_ACCEPT_1(cond, Expr),
1907	GET_ACCEPT_1(body, Stmt),
1908	GET_LABELS_V(old->labels)
1909	);
1910	cache.emplace( old, this->node );
1911	}
1912
1913	virtual void visit( FinallyStmt * old ) override final {
1914	if ( inCache( old ) ) return;
1915	this->node = new ast::FinallyStmt(
1916	old->location,
1917	GET_ACCEPT_1(block, CompoundStmt),
1918	GET_LABELS_V(old->labels)
1919	);
1920	cache.emplace( old, this->node );
1921	}
1922
1923	virtual void visit( WaitForStmt * old ) override final {
1924	if ( inCache( old ) ) return;
1925	ast::WaitForStmt * stmt = new ast::WaitForStmt(
1926	old->location,
1927	GET_LABELS_V(old->labels)
1928	);
1929
1930	stmt->clauses.reserve( old->clauses.size() );
1931	for (size_t i = 0 ; i < old->clauses.size() ; ++i) {
1932	stmt->clauses.push_back({
1933	ast::WaitForStmt::Target{
1934	GET_ACCEPT_1(clauses[i].target.function, Expr),
1935	GET_ACCEPT_V(clauses[i].target.arguments, Expr)
1936	},
1937	GET_ACCEPT_1(clauses[i].statement, Stmt),
1938	GET_ACCEPT_1(clauses[i].condition, Expr)
1939	});
1940	}
1941	stmt->timeout = {
1942	GET_ACCEPT_1(timeout.time, Expr),
1943	GET_ACCEPT_1(timeout.statement, Stmt),
1944	GET_ACCEPT_1(timeout.condition, Expr),
1945	};
1946	stmt->orElse = {
1947	GET_ACCEPT_1(timeout.statement, Stmt),
1948	GET_ACCEPT_1(timeout.condition, Expr),
1949	};
1950
1951	this->node = stmt;
1952	cache.emplace( old, this->node );
1953	}
1954
1955	virtual void visit( WithStmt * old ) override final {
1956	if ( inCache( old ) ) return;
1957	this->node = new ast::WithStmt(
1958	old->location,
1959	GET_ACCEPT_V(exprs, Expr),
1960	GET_ACCEPT_1(stmt, Stmt),
1961	GET_LABELS_V(old->labels)
1962	);
1963	cache.emplace( old, this->node );
1964	}
1965
1966	virtual void visit( NullStmt * old ) override final {
1967	if ( inCache( old ) ) return;
1968	this->node = new ast::NullStmt(
1969	old->location,
1970	GET_LABELS_V(old->labels)
1971	);
1972	cache.emplace( old, this->node );
1973	}
1974
1975	virtual void visit( DeclStmt * old ) override final {
1976	if ( inCache( old ) ) return;
1977	this->node = new ast::DeclStmt(
1978	old->location,
1979	GET_ACCEPT_1(decl, Decl),
1980	GET_LABELS_V(old->labels)
1981	);
1982	cache.emplace( old, this->node );
1983	}
1984
1985	virtual void visit( ImplicitCtorDtorStmt * old ) override final {
1986	if ( inCache( old ) ) return;
1987	auto stmt = new ast::ImplicitCtorDtorStmt(
1988	old->location,
1989	nullptr,
1990	GET_LABELS_V(old->labels)
1991	);
1992	cache.emplace( old, stmt );
1993	stmt->callStmt = GET_ACCEPT_1(callStmt, Stmt);
1994	this->node = stmt;
1995	}
1996
1997	ast::TypeSubstitution * convertTypeSubstitution(const TypeSubstitution * old) {
1998
1999	if (!old) return nullptr;
2000
2001	ast::TypeSubstitution *rslt = new ast::TypeSubstitution();
2002
2003	for (decltype(old->begin()) old_i = old->begin(); old_i != old->end(); old_i++) {
2004	rslt->add( old_i->first,
2005	getAccept1<ast::Type>(old_i->second) );
2006	}
2007
2008	for (decltype(old->beginVar()) old_i = old->beginVar(); old_i != old->endVar(); old_i++) {
2009	rslt->addVar( old_i->first,
2010	getAccept1<ast::Expr>(old_i->second) );
2011	}
2012
2013	return rslt;
2014	}
2015
2016	void convertInferUnion(ast::Expr::InferUnion &newInferred,
2017	const std::map<UniqueId,ParamEntry> &oldInferParams,
2018	const std::vector<UniqueId> &oldResnSlots) {
2019
2020	assert( oldInferParams.empty() \|\| oldResnSlots.empty() );
2021	assert( newInferred.mode == ast::Expr::InferUnion::Empty );
2022
2023	if ( !oldInferParams.empty() ) {
2024	ast::InferredParams &tgt = newInferred.inferParams();
2025	for (auto old : oldInferParams) {
2026	tgt[old.first] = ast::ParamEntry(
2027	old.second.decl,
2028	getAccept1<ast::Type>(old.second.actualType),
2029	getAccept1<ast::Type>(old.second.formalType),
2030	getAccept1<ast::Expr>(old.second.expr)
2031	);
2032	}
2033	} else if ( !oldResnSlots.empty() ) {
2034	ast::ResnSlots &tgt = newInferred.resnSlots();
2035	for (auto old : oldResnSlots) {
2036	tgt.push_back(old);
2037	}
2038	}
2039	}
2040
2041	ast::Expr * visitBaseExpr_SkipResultType(Expression * old, ast::Expr * nw) {
2042
2043	nw->env = convertTypeSubstitution(old->env);
2044
2045	nw->extension = old->extension;
2046	convertInferUnion(nw->inferred, old->inferParams, old->resnSlots);
2047
2048	return nw;
2049	}
2050
2051	ast::Expr * visitBaseExpr(Expression * old, ast::Expr * nw) {
2052
2053	nw->result = GET_ACCEPT_1(result, Type);
2054	return visitBaseExpr_SkipResultType(old, nw);;
2055	}
2056
2057	virtual void visit( ApplicationExpr * old ) override final {
2058	this->node = visitBaseExpr( old,
2059	new ast::ApplicationExpr(
2060	old->location,
2061	GET_ACCEPT_1(function, Expr),
2062	GET_ACCEPT_V(args, Expr)
2063	)
2064	);
2065	}
2066
2067	virtual void visit( UntypedExpr * old ) override final {
2068	this->node = visitBaseExpr( old,
2069	new ast::UntypedExpr(
2070	old->location,
2071	GET_ACCEPT_1(function, Expr),
2072	GET_ACCEPT_V(args, Expr)
2073	)
2074	);
2075	}
2076
2077	virtual void visit( NameExpr * old ) override final {
2078	this->node = visitBaseExpr( old,
2079	new ast::NameExpr(
2080	old->location,
2081	old->get_name()
2082	)
2083	);
2084	}
2085
2086	virtual void visit( CastExpr * old ) override final {
2087	this->node = visitBaseExpr( old,
2088	new ast::CastExpr(
2089	old->location,
2090	GET_ACCEPT_1(arg, Expr),
2091	old->isGenerated ? ast::GeneratedCast : ast::ExplicitCast
2092	)
2093	);
2094	}
2095
2096	virtual void visit( KeywordCastExpr * old) override final {
2097	ast::KeywordCastExpr::Target castTarget = ast::KeywordCastExpr::NUMBER_OF_TARGETS;
2098	switch (old->target) {
2099	case KeywordCastExpr::Coroutine:
2100	castTarget = ast::KeywordCastExpr::Coroutine;
2101	break;
2102	case KeywordCastExpr::Thread:
2103	castTarget = ast::KeywordCastExpr::Thread;
2104	break;
2105	case KeywordCastExpr::Monitor:
2106	castTarget = ast::KeywordCastExpr::Monitor;
2107	break;
2108	default:
2109	break;
2110	}
2111	assert ( castTarget < ast::KeywordCastExpr::NUMBER_OF_TARGETS );
2112	this->node = visitBaseExpr( old,
2113	new ast::KeywordCastExpr(
2114	old->location,
2115	GET_ACCEPT_1(arg, Expr),
2116	castTarget
2117	)
2118	);
2119	}
2120
2121	virtual void visit( VirtualCastExpr * old ) override final {
2122	this->node = visitBaseExpr_SkipResultType( old,
2123	new ast::VirtualCastExpr(
2124	old->location,
2125	GET_ACCEPT_1(arg, Expr),
2126	GET_ACCEPT_1(result, Type)
2127	)
2128	);
2129	}
2130
2131	virtual void visit( AddressExpr * old ) override final {
2132	this->node = visitBaseExpr( old,
2133	new ast::AddressExpr(
2134	old->location,
2135	GET_ACCEPT_1(arg, Expr)
2136	)
2137	);
2138	}
2139
2140	virtual void visit( LabelAddressExpr * old ) override final {
2141	this->node = visitBaseExpr( old,
2142	new ast::LabelAddressExpr(
2143	old->location,
2144	make_label(&old->arg)
2145	)
2146	);
2147	}
2148
2149	virtual void visit( UntypedMemberExpr * old ) override final {
2150	this->node = visitBaseExpr( old,
2151	new ast::UntypedMemberExpr(
2152	old->location,
2153	GET_ACCEPT_1(member, Expr),
2154	GET_ACCEPT_1(aggregate, Expr)
2155	)
2156	);
2157	}
2158
2159	virtual void visit( MemberExpr * old ) override final {
2160	this->node = visitBaseExpr( old,
2161	new ast::MemberExpr(
2162	old->location,
2163	GET_ACCEPT_1(member, DeclWithType),
2164	GET_ACCEPT_1(aggregate, Expr)
2165	)
2166	);
2167	}
2168
2169	virtual void visit( VariableExpr * old ) override final {
2170	auto expr = new ast::VariableExpr(
2171	old->location
2172	);
2173
2174	visitBaseExpr_SkipResultType( old,
2175	expr
2176	);
2177
2178	expr->var = GET_ACCEPT_1(var, DeclWithType);
2179	expr->result = expr->var->get_type();
2180	if(const ast::FunctionType * ft = expr->result.as<ast::FunctionType>()) {
2181	if(dynamic_cast<PointerType *>(old->result)) {
2182	expr->result = new ast::PointerType(ft);
2183	}
2184	}
2185	add_qualifiers( expr->result, ast::CV::Lvalue );
2186	this->node = expr;
2187	}
2188
2189	bool isIntlikeConstantType(const Type *t) {
2190	if ( const BasicType * basicType = dynamic_cast< const BasicType * >( t ) ) {
2191	if ( basicType->isInteger() ) {
2192	return true;
2193	}
2194	} else if ( dynamic_cast< const OneType * >( t ) ) {
2195	return true;
2196	} else if ( dynamic_cast< const ZeroType * >( t ) ) {
2197	return true;
2198	} else if ( dynamic_cast< const PointerType * >( t ) ) {
2199	// null pointer constants, with zero int-values
2200	return true;
2201	}
2202	return false;
2203	}
2204
2205	int isFloatlikeConstantType(const Type *t) {
2206	if ( const BasicType * bty = dynamic_cast< const BasicType * >( t ) ) {
2207	if ( ! bty->isInteger() ) {
2208	return true;
2209	}
2210	}
2211	return false;
2212	}
2213
2214	int isStringlikeConstantType(const Type *t) {
2215	if ( const ArrayType * aty = dynamic_cast< const ArrayType * >( t ) ) {
2216	if ( const BasicType * bty = dynamic_cast< const BasicType * >( aty->base ) ) {
2217	if ( bty->kind == BasicType::Kind::Char ) {
2218	return true;
2219	}
2220	}
2221	}
2222	return false;
2223	}
2224
2225	virtual void visit( ConstantExpr * old ) override final {
2226	ast::ConstantExpr *rslt = nullptr;
2227	if (isIntlikeConstantType(old->result)) {
2228	rslt = new ast::ConstantExpr(
2229	old->location,
2230	GET_ACCEPT_1(result, Type),
2231	old->constant.get_value(),
2232	(unsigned long long) old->intValue(),
2233	ast::ConstantExpr::Kind::Integer
2234	);
2235	} else if (isFloatlikeConstantType(old->result)) {
2236	rslt = new ast::ConstantExpr(
2237	old->location,
2238	GET_ACCEPT_1(result, Type),
2239	old->constant.get_value(),
2240	(double) old->constant.get_dval()
2241	);
2242	} else if (isStringlikeConstantType(old->result)) {
2243	rslt = new ast::ConstantExpr(
2244	old->location,
2245	GET_ACCEPT_1(result, Type),
2246	old->constant.get_value(),
2247	0,
2248	ast::ConstantExpr::Kind::String
2249	);
2250	}
2251	assert(rslt);
2252	this->node = visitBaseExpr( old, rslt );
2253	}
2254
2255	virtual void visit( SizeofExpr * old ) override final {
2256	assert (old->expr \|\| old->type);
2257	assert (! (old->expr && old->type));
2258	ast::SizeofExpr *rslt;
2259	if (old->expr) {
2260	assert(!old->isType);
2261	rslt = new ast::SizeofExpr(
2262	old->location,
2263	GET_ACCEPT_1(expr, Expr)
2264	);
2265	}
2266	if (old->type) {
2267	assert(old->isType);
2268	rslt = new ast::SizeofExpr(
2269	old->location,
2270	GET_ACCEPT_1(type, Type)
2271	);
2272	}
2273	this->node = visitBaseExpr( old, rslt );
2274	}
2275
2276	virtual void visit( AlignofExpr * old ) override final {
2277	assert (old->expr \|\| old->type);
2278	assert (! (old->expr && old->type));
2279	ast::AlignofExpr *rslt;
2280	if (old->expr) {
2281	assert(!old->isType);
2282	rslt = new ast::AlignofExpr(
2283	old->location,
2284	GET_ACCEPT_1(expr, Expr)
2285	);
2286	}
2287	if (old->type) {
2288	assert(old->isType);
2289	rslt = new ast::AlignofExpr(
2290	old->location,
2291	GET_ACCEPT_1(type, Type)
2292	);
2293	}
2294	this->node = visitBaseExpr( old, rslt );
2295	}
2296
2297	virtual void visit( UntypedOffsetofExpr * old ) override final {
2298	this->node = visitBaseExpr( old,
2299	new ast::UntypedOffsetofExpr(
2300	old->location,
2301	GET_ACCEPT_1(type, Type),
2302	old->member
2303	)
2304	);
2305	}
2306
2307	virtual void visit( OffsetofExpr * old ) override final {
2308	this->node = visitBaseExpr( old,
2309	new ast::OffsetofExpr(
2310	old->location,
2311	GET_ACCEPT_1(type, Type),
2312	GET_ACCEPT_1(member, DeclWithType)
2313	)
2314	);
2315	}
2316
2317	virtual void visit( OffsetPackExpr * old ) override final {
2318	this->node = visitBaseExpr( old,
2319	new ast::OffsetPackExpr(
2320	old->location,
2321	GET_ACCEPT_1(type, StructInstType)
2322	)
2323	);
2324	}
2325
2326	virtual void visit( LogicalExpr * old ) override final {
2327	this->node = visitBaseExpr( old,
2328	new ast::LogicalExpr(
2329	old->location,
2330	GET_ACCEPT_1(arg1, Expr),
2331	GET_ACCEPT_1(arg2, Expr),
2332	old->get_isAnd() ?
2333	ast::LogicalFlag::AndExpr :
2334	ast::LogicalFlag::OrExpr
2335	)
2336	);
2337	}
2338
2339	virtual void visit( ConditionalExpr * old ) override final {
2340	this->node = visitBaseExpr( old,
2341	new ast::ConditionalExpr(
2342	old->location,
2343	GET_ACCEPT_1(arg1, Expr),
2344	GET_ACCEPT_1(arg2, Expr),
2345	GET_ACCEPT_1(arg3, Expr)
2346	)
2347	);
2348	}
2349
2350	virtual void visit( CommaExpr * old ) override final {
2351	this->node = visitBaseExpr( old,
2352	new ast::CommaExpr(
2353	old->location,
2354	GET_ACCEPT_1(arg1, Expr),
2355	GET_ACCEPT_1(arg2, Expr)
2356	)
2357	);
2358	}
2359
2360	virtual void visit( TypeExpr * old ) override final {
2361	this->node = visitBaseExpr( old,
2362	new ast::TypeExpr(
2363	old->location,
2364	GET_ACCEPT_1(type, Type)
2365	)
2366	);
2367	}
2368
2369	virtual void visit( AsmExpr * old ) override final {
2370	this->node = visitBaseExpr( old,
2371	new ast::AsmExpr(
2372	old->location,
2373	GET_ACCEPT_1(inout, Expr),
2374	GET_ACCEPT_1(constraint, Expr),
2375	GET_ACCEPT_1(operand, Expr)
2376	)
2377	);
2378	}
2379
2380	virtual void visit( ImplicitCopyCtorExpr * old ) override final {
2381	auto rslt = new ast::ImplicitCopyCtorExpr(
2382	old->location,
2383	GET_ACCEPT_1(callExpr, ApplicationExpr)
2384	);
2385
2386	this->node = visitBaseExpr( old, rslt );
2387	}
2388
2389	virtual void visit( ConstructorExpr * old ) override final {
2390	this->node = visitBaseExpr( old,
2391	new ast::ConstructorExpr(
2392	old->location,
2393	GET_ACCEPT_1(callExpr, Expr)
2394	)
2395	);
2396	}
2397
2398	virtual void visit( CompoundLiteralExpr * old ) override final {
2399	this->node = visitBaseExpr_SkipResultType( old,
2400	new ast::CompoundLiteralExpr(
2401	old->location,
2402	GET_ACCEPT_1(result, Type),
2403	GET_ACCEPT_1(initializer, Init)
2404	)
2405	);
2406	}
2407
2408	virtual void visit( RangeExpr * old ) override final {
2409	this->node = visitBaseExpr( old,
2410	new ast::RangeExpr(
2411	old->location,
2412	GET_ACCEPT_1(low, Expr),
2413	GET_ACCEPT_1(high, Expr)
2414	)
2415	);
2416	}
2417
2418	virtual void visit( UntypedTupleExpr * old ) override final {
2419	this->node = visitBaseExpr( old,
2420	new ast::UntypedTupleExpr(
2421	old->location,
2422	GET_ACCEPT_V(exprs, Expr)
2423	)
2424	);
2425	}
2426
2427	virtual void visit( TupleExpr * old ) override final {
2428	this->node = visitBaseExpr( old,
2429	new ast::TupleExpr(
2430	old->location,
2431	GET_ACCEPT_V(exprs, Expr)
2432	)
2433	);
2434	}
2435
2436	virtual void visit( TupleIndexExpr * old ) override final {
2437	this->node = visitBaseExpr( old,
2438	new ast::TupleIndexExpr(
2439	old->location,
2440	GET_ACCEPT_1(tuple, Expr),
2441	old->index
2442	)
2443	);
2444	}
2445
2446	virtual void visit( TupleAssignExpr * old ) override final {
2447	this->node = visitBaseExpr_SkipResultType( old,
2448	new ast::TupleAssignExpr(
2449	old->location,
2450	GET_ACCEPT_1(result, Type),
2451	GET_ACCEPT_1(stmtExpr, StmtExpr)
2452	)
2453	);
2454	}
2455
2456	virtual void visit( StmtExpr * old ) override final {
2457	auto rslt = new ast::StmtExpr(
2458	old->location,
2459	GET_ACCEPT_1(statements, CompoundStmt)
2460	);
2461	rslt->returnDecls = GET_ACCEPT_V(returnDecls, ObjectDecl);
2462	rslt->dtors = GET_ACCEPT_V(dtors , Expr);
2463
2464	this->node = visitBaseExpr_SkipResultType( old, rslt );
2465	}
2466
2467	virtual void visit( UniqueExpr * old ) override final {
2468	auto rslt = new ast::UniqueExpr(
2469	old->location,
2470	GET_ACCEPT_1(expr, Expr)
2471	);
2472	rslt->object = GET_ACCEPT_1(object, ObjectDecl);
2473	rslt->var = GET_ACCEPT_1(var , VariableExpr);
2474
2475	this->node = visitBaseExpr( old, rslt );
2476	}
2477
2478	virtual void visit( UntypedInitExpr * old ) override final {
2479	std::deque<ast::InitAlternative> initAlts;
2480	for (auto ia : old->initAlts) {
2481	initAlts.push_back(ast::InitAlternative(
2482	getAccept1< ast::Type, Type * >( ia.type ),
2483	getAccept1< ast::Designation, Designation * >( ia.designation )
2484	));
2485	}
2486	this->node = visitBaseExpr( old,
2487	new ast::UntypedInitExpr(
2488	old->location,
2489	GET_ACCEPT_1(expr, Expr),
2490	std::move(initAlts)
2491	)
2492	);
2493	}
2494
2495	virtual void visit( InitExpr * old ) override final {
2496	this->node = visitBaseExpr( old,
2497	new ast::InitExpr(
2498	old->location,
2499	GET_ACCEPT_1(expr, Expr),
2500	GET_ACCEPT_1(designation, Designation)
2501	)
2502	);
2503	}
2504
2505	virtual void visit( DeletedExpr * old ) override final {
2506	this->node = visitBaseExpr( old,
2507	new ast::DeletedExpr(
2508	old->location,
2509	GET_ACCEPT_1(expr, Expr),
2510	inCache(old->deleteStmt) ?
2511	this->node :
2512	GET_ACCEPT_1(deleteStmt, Node)
2513	)
2514	);
2515	}
2516
2517	virtual void visit( DefaultArgExpr * old ) override final {
2518	this->node = visitBaseExpr( old,
2519	new ast::DefaultArgExpr(
2520	old->location,
2521	GET_ACCEPT_1(expr, Expr)
2522	)
2523	);
2524	}
2525
2526	virtual void visit( GenericExpr * old ) override final {
2527	std::vector<ast::GenericExpr::Association> associations;
2528	for (auto association : old->associations) {
2529	associations.push_back(ast::GenericExpr::Association(
2530	getAccept1< ast::Type, Type * >( association.type ),
2531	getAccept1< ast::Expr, Expression * >( association.expr )
2532	));
2533	}
2534	this->node = visitBaseExpr( old,
2535	new ast::GenericExpr(
2536	old->location,
2537	GET_ACCEPT_1(control, Expr),
2538	std::move(associations)
2539	)
2540	);
2541	}
2542
2543	virtual void visit( VoidType * old ) override final {
2544	this->node = new ast::VoidType{ cv( old ) };
2545	}
2546
2547	virtual void visit( BasicType * old ) override final {
2548	auto type = new ast::BasicType{ (ast::BasicType::Kind)(unsigned)old->kind, cv( old ) };
2549	// I believe this should always be a BasicType.
2550	if ( Validate::SizeType == old ) {
2551	sizeType = type;
2552	}
2553	this->node = type;
2554	}
2555
2556	virtual void visit( PointerType * old ) override final {
2557	this->node = new ast::PointerType{
2558	GET_ACCEPT_1( base, Type ),
2559	GET_ACCEPT_1( dimension, Expr ),
2560	(ast::LengthFlag)old->isVarLen,
2561	(ast::DimensionFlag)old->isStatic,
2562	cv( old )
2563	};
2564	}
2565
2566	virtual void visit( ArrayType * old ) override final {
2567	this->node = new ast::ArrayType{
2568	GET_ACCEPT_1( base, Type ),
2569	GET_ACCEPT_1( dimension, Expr ),
2570	(ast::LengthFlag)old->isVarLen,
2571	(ast::DimensionFlag)old->isStatic,
2572	cv( old )
2573	};
2574	}
2575
2576	virtual void visit( ReferenceType * old ) override final {
2577	this->node = new ast::ReferenceType{
2578	GET_ACCEPT_1( base, Type ),
2579	cv( old )
2580	};
2581	}
2582
2583	virtual void visit( QualifiedType * old ) override final {
2584	this->node = new ast::QualifiedType{
2585	GET_ACCEPT_1( parent, Type ),
2586	GET_ACCEPT_1( child, Type ),
2587	cv( old )
2588	};
2589	}
2590
2591	virtual void visit( FunctionType * old ) override final {
2592	auto ty = new ast::FunctionType {
2593	(ast::ArgumentFlag)old->isVarArgs,
2594	cv( old )
2595	};
2596	ty->returns = GET_ACCEPT_V( returnVals, DeclWithType );
2597	ty->params = GET_ACCEPT_V( parameters, DeclWithType );
2598	ty->forall = GET_ACCEPT_V( forall, TypeDecl );
2599	this->node = ty;
2600	}
2601
2602	void postvisit( ReferenceToType * old, ast::ReferenceToType * ty ) {
2603	ty->forall = GET_ACCEPT_V( forall, TypeDecl );
2604	ty->params = GET_ACCEPT_V( parameters, Expr );
2605	ty->hoistType = old->hoistType;
2606	}
2607
2608	virtual void visit( StructInstType * old ) override final {
2609	ast::StructInstType * ty;
2610	if ( old->baseStruct ) {
2611	ty = new ast::StructInstType{
2612	GET_ACCEPT_1( baseStruct, StructDecl ),
2613	cv( old ),
2614	GET_ACCEPT_V( attributes, Attribute )
2615	};
2616	} else {
2617	ty = new ast::StructInstType{
2618	old->name,
2619	cv( old ),
2620	GET_ACCEPT_V( attributes, Attribute )
2621	};
2622	}
2623	postvisit( old, ty );
2624	this->node = ty;
2625	}
2626
2627	virtual void visit( UnionInstType * old ) override final {
2628	ast::UnionInstType * ty;
2629	if ( old->baseUnion ) {
2630	ty = new ast::UnionInstType{
2631	GET_ACCEPT_1( baseUnion, UnionDecl ),
2632	cv( old ),
2633	GET_ACCEPT_V( attributes, Attribute )
2634	};
2635	} else {
2636	ty = new ast::UnionInstType{
2637	old->name,
2638	cv( old ),
2639	GET_ACCEPT_V( attributes, Attribute )
2640	};
2641	}
2642	postvisit( old, ty );
2643	this->node = ty;
2644	}
2645
2646	virtual void visit( EnumInstType * old ) override final {
2647	ast::EnumInstType * ty;
2648	if ( old->baseEnum ) {
2649	ty = new ast::EnumInstType{
2650	GET_ACCEPT_1( baseEnum, EnumDecl ),
2651	cv( old ),
2652	GET_ACCEPT_V( attributes, Attribute )
2653	};
2654	} else {
2655	ty = new ast::EnumInstType{
2656	old->name,
2657	cv( old ),
2658	GET_ACCEPT_V( attributes, Attribute )
2659	};
2660	}
2661	postvisit( old, ty );
2662	this->node = ty;
2663	}
2664
2665	virtual void visit( TraitInstType * old ) override final {
2666	ast::TraitInstType * ty;
2667	if ( old->baseTrait ) {
2668	ty = new ast::TraitInstType{
2669	GET_ACCEPT_1( baseTrait, TraitDecl ),
2670	cv( old ),
2671	GET_ACCEPT_V( attributes, Attribute )
2672	};
2673	} else {
2674	ty = new ast::TraitInstType{
2675	old->name,
2676	cv( old ),
2677	GET_ACCEPT_V( attributes, Attribute )
2678	};
2679	}
2680	postvisit( old, ty );
2681	this->node = ty;
2682	}
2683
2684	virtual void visit( TypeInstType * old ) override final {
2685	ast::TypeInstType * ty;
2686	if ( old->baseType ) {
2687	ty = new ast::TypeInstType{
2688	old->name,
2689	GET_ACCEPT_1( baseType, TypeDecl ),
2690	cv( old ),
2691	GET_ACCEPT_V( attributes, Attribute )
2692	};
2693	} else {
2694	ty = new ast::TypeInstType{
2695	old->name,
2696	old->isFtype ? ast::TypeVar::Ftype : ast::TypeVar::Dtype,
2697	cv( old ),
2698	GET_ACCEPT_V( attributes, Attribute )
2699	};
2700	}
2701	postvisit( old, ty );
2702	this->node = ty;
2703	}
2704
2705	virtual void visit( TupleType * old ) override final {
2706	this->node = new ast::TupleType{
2707	GET_ACCEPT_V( types, Type ),
2708	// members generated by TupleType c'tor
2709	cv( old )
2710	};
2711	}
2712
2713	virtual void visit( TypeofType * old ) override final {
2714	this->node = new ast::TypeofType{
2715	GET_ACCEPT_1( expr, Expr ),
2716	(ast::TypeofType::Kind)old->is_basetypeof,
2717	cv( old )
2718	};
2719	}
2720
2721	virtual void visit( AttrType * ) override final {
2722	assertf( false, "AttrType deprecated in new AST." );
2723	}
2724
2725	virtual void visit( VarArgsType * old ) override final {
2726	this->node = new ast::VarArgsType{ cv( old ) };
2727	}
2728
2729	virtual void visit( ZeroType * old ) override final {
2730	this->node = new ast::ZeroType{ cv( old ) };
2731	}
2732
2733	virtual void visit( OneType * old ) override final {
2734	this->node = new ast::OneType{ cv( old ) };
2735	}
2736
2737	virtual void visit( GlobalScopeType * ) override final {
2738	this->node = new ast::GlobalScopeType{};
2739	}
2740
2741	virtual void visit( Designation * old ) override final {
2742	this->node = new ast::Designation(
2743	old->location,
2744	GET_ACCEPT_D(designators, Expr)
2745	);
2746	}
2747
2748	virtual void visit( SingleInit * old ) override final {
2749	this->node = new ast::SingleInit(
2750	old->location,
2751	GET_ACCEPT_1(value, Expr),
2752	(old->get_maybeConstructed()) ? ast::MaybeConstruct : ast::DoConstruct
2753	);
2754	}
2755
2756	virtual void visit( ListInit * old ) override final {
2757	this->node = new ast::ListInit(
2758	old->location,
2759	GET_ACCEPT_V(initializers, Init),
2760	GET_ACCEPT_V(designations, Designation),
2761	(old->get_maybeConstructed()) ? ast::MaybeConstruct : ast::DoConstruct
2762	);
2763	}
2764
2765	virtual void visit( ConstructorInit * old ) override final {
2766	this->node = new ast::ConstructorInit(
2767	old->location,
2768	GET_ACCEPT_1(ctor, Stmt),
2769	GET_ACCEPT_1(dtor, Stmt),
2770	GET_ACCEPT_1(init, Init)
2771	);
2772	}
2773
2774	virtual void visit( Constant * ) override final {
2775	// Handled in visit( ConstantEpxr * ).
2776	// In the new tree, Constant fields are inlined into containing ConstantExpression.
2777	assert( 0 );
2778	}
2779
2780	virtual void visit( Attribute * old ) override final {
2781	this->node = new ast::Attribute(
2782	old->name,
2783	GET_ACCEPT_V( parameters, Expr )
2784	);
2785	}
2786
2787	virtual void visit( AttrExpr * ) override final {
2788	assertf( false, "AttrExpr deprecated in new AST." );
2789	}
2790	};
2791
2792	#undef GET_LABELS_V
2793	#undef GET_ACCEPT_V
2794	#undef GET_ACCEPT_1
2795
2796	std::list< ast::ptr< ast::Decl > > convert( const std::list< Declaration * > && translationUnit ) {
2797	ConverterOldToNew c;
2798	std::list< ast::ptr< ast::Decl > > decls;
2799	for(auto d : translationUnit) {
2800	d->accept( c );
2801	decls.emplace_back( c.decl() );
2802	}
2803	deleteAll(translationUnit);
2804	return decls;
2805	}

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