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source: src/AST/Pass.impl.hpp @ 85e49a6

ADTast-experimental

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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	// ast::Pass.impl.hpp --
8	//
9	// Author : Thierry Delisle
10	// Created On : Thu May 09 15::37::05 2019
11	// Last Modified By :
12	// Last Modified On :
13	// Update Count :
14	//
15
16	#pragma once
17	// IWYU pragma: private, include "AST/Pass.hpp"
18
19	#include <type_traits>
20	#include <unordered_map>
21
22	#include "AST/TranslationUnit.hpp"
23	#include "AST/TypeSubstitution.hpp"
24	#include "Common/Iterate.hpp"
25
26	#define VISIT_START( node ) \
27	using namespace ast; \
28	/* back-up the last known code location */ \
29	__attribute__((unused)) auto loc_guard = ast::__pass::make_location_guard( core, node, 0 ); \
30	/* back-up the visit children */ \
31	__attribute__((unused)) ast::__pass::visit_children_guard guard1( ast::__pass::visit_children(core, 0) ); \
32	/* setup the scope for passes that want to run code at exit */ \
33	__attribute__((unused)) ast::__pass::guard_value guard2( ast::__pass::at_cleanup (core, 0) ); \
34	/* begin tracing memory allocation if requested by this pass */ \
35	__pass::beginTrace( core, 0 ); \
36	/* call the implementation of the previsit of this pass */ \
37	__pass::previsit( core, node, 0 );
38
39	#define VISIT_END( type, node ) \
40	/* call the implementation of the postvisit of this pass */ \
41	auto __return = __pass::postvisit( core, node, 0 ); \
42	assertf(__return, "post visit should never return null"); \
43	/* end tracing memory allocation if requested by this pass */ \
44	__pass::endTrace( core, 0 ); \
45	return __return;
46
47	#ifdef PEDANTIC_PASS_ASSERT
48	#define __pedantic_pass_assert(...) assert (__VA_ARGS__)
49	#define __pedantic_pass_assertf(...) assertf(__VA_ARGS__)
50	#else
51	#define __pedantic_pass_assert(...)
52	#define __pedantic_pass_assertf(...)
53	#endif
54
55	namespace ast {
56	template<typename node_t>
57	node_t * shallowCopy( const node_t * node );
58
59	namespace __pass {
60	// Check if this is either a null pointer or a pointer to an empty container
61	template<typename T>
62	static inline bool empty( T * ptr ) {
63	return !ptr \|\| ptr->empty();
64	}
65
66	template< typename core_t, typename node_t >
67	static inline node_t* mutate(const node_t *node) {
68	return std::is_base_of<PureVisitor, core_t>::value ? ::ast::shallowCopy(node) : ::ast::mutate(node);
69	}
70
71	//------------------------------
72	template<typename it_t, template <class...> class container_t>
73	static inline void take_all( it_t it, container_t<ast::ptr<ast::Decl>> * decls, bool * mutated = nullptr ) {
74	if(empty(decls)) return;
75
76	std::transform(decls->begin(), decls->end(), it, [](const ast::Decl * decl) -> auto {
77	return new DeclStmt( decl->location, decl );
78	});
79	decls->clear();
80	if(mutated) *mutated = true;
81	}
82
83	template<typename it_t, template <class...> class container_t>
84	static inline void take_all( it_t it, container_t<ast::ptr<ast::Stmt>> * stmts, bool * mutated = nullptr ) {
85	if(empty(stmts)) return;
86
87	std::move(stmts->begin(), stmts->end(), it);
88	stmts->clear();
89	if(mutated) *mutated = true;
90	}
91
92	//------------------------------
93	/// Check if should be skipped, different for pointers and containers
94	template<typename node_t>
95	bool skip( const ast::ptr<node_t> & val) {
96	return !val;
97	}
98
99	template< template <class...> class container_t, typename node_t >
100	bool skip( const container_t<ast::ptr< node_t >> & val ) {
101	return val.empty();
102	}
103
104	//------------------------------
105	/// Get the value to visit, different for pointers and containers
106	template<typename node_t>
107	auto get( const ast::ptr<node_t> & val, int ) -> decltype(val.get()) {
108	return val.get();
109	}
110
111	template<typename node_t>
112	const node_t & get( const node_t & val, long) {
113	return val;
114	}
115
116	//------------------------------
117	/// Check if value was mutated, different for pointers and containers
118	template<typename lhs_t, typename rhs_t>
119	bool differs( const lhs_t * old_val, const rhs_t * new_val ) {
120	return old_val != new_val;
121	}
122
123	template< template <class...> class container_t, typename node_t >
124	bool differs( const container_t<ast::ptr< node_t >> &, const container_t<ast::ptr< node_t >> & new_val ) {
125	return !new_val.empty();
126	}
127	}
128
129	template< typename node_t >
130	template< typename object_t, typename super_t, typename field_t >
131	void __pass::result1< node_t >::apply( object_t * object, field_t super_t::* field ) {
132	object->*field = value;
133	}
134
135	template< typename core_t >
136	template< typename node_t >
137	auto ast::Pass< core_t >::call_accept( const node_t * node )
138	-> typename ast::Pass< core_t >::template generic_call_accept_result<node_t>::type
139	{
140	__pedantic_pass_assert( __visit_children() );
141	__pedantic_pass_assert( node );
142
143	static_assert( !std::is_base_of<ast::Expr, node_t>::value, "ERROR");
144	static_assert( !std::is_base_of<ast::Stmt, node_t>::value, "ERROR");
145
146	auto nval = node->accept( *this );
147	__pass::result1<
148	typename std::remove_pointer< decltype( node->accept(*this) ) >::type
149	> res;
150	res.differs = nval != node;
151	res.value = nval;
152	return res;
153	}
154
155	template< typename core_t >
156	__pass::template result1<ast::Expr> ast::Pass< core_t >::call_accept( const ast::Expr * expr ) {
157	__pedantic_pass_assert( __visit_children() );
158	__pedantic_pass_assert( expr );
159
160	auto nval = expr->accept( *this );
161	return { nval != expr, nval };
162	}
163
164	template< typename core_t >
165	__pass::template result1<ast::Stmt> ast::Pass< core_t >::call_accept( const ast::Stmt * stmt ) {
166	__pedantic_pass_assert( __visit_children() );
167	__pedantic_pass_assert( stmt );
168
169	const ast::Stmt * nval = stmt->accept( *this );
170	return { nval != stmt, nval };
171	}
172
173	template< typename core_t >
174	__pass::template result1<ast::Expr> ast::Pass< core_t >::call_accept_top( const ast::Expr * expr ) {
175	__pedantic_pass_assert( __visit_children() );
176	__pedantic_pass_assert( expr );
177
178	const ast::TypeSubstitution ** typeSubs_ptr = __pass::typeSubs( core, 0 );
179	if ( typeSubs_ptr && expr->env ) {
180	*typeSubs_ptr = expr->env;
181	}
182
183	auto nval = expr->accept( *this );
184	return { nval != expr, nval };
185	}
186
187	template< typename core_t >
188	__pass::template result1<ast::Stmt> ast::Pass< core_t >::call_accept_as_compound( const ast::Stmt * stmt ) {
189	__pedantic_pass_assert( __visit_children() );
190	__pedantic_pass_assert( stmt );
191
192	// add a few useful symbols to the scope
193	using __pass::empty;
194
195	// get the stmts/decls that will need to be spliced in
196	auto stmts_before = __pass::stmtsToAddBefore( core, 0 );
197	auto stmts_after = __pass::stmtsToAddAfter ( core, 0 );
198	auto decls_before = __pass::declsToAddBefore( core, 0 );
199	auto decls_after = __pass::declsToAddAfter ( core, 0 );
200
201	// These may be modified by subnode but most be restored once we exit this statemnet.
202	ValueGuardPtr< const ast::TypeSubstitution * > __old_env ( __pass::typeSubs( core, 0 ) );
203	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
204	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
205	ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
206	ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
207
208	// Now is the time to actually visit the node
209	const ast::Stmt * nstmt = stmt->accept( *this );
210
211	// If the pass doesn't want to add anything then we are done
212	if( empty(stmts_before) && empty(stmts_after) && empty(decls_before) && empty(decls_after) ) {
213	return { nstmt != stmt, nstmt };
214	}
215
216	// Make sure that it is either adding statements or declartions but not both
217	// this is because otherwise the order would be awkward to predict
218	assert(( empty( stmts_before ) && empty( stmts_after ))
219	\|\| ( empty( decls_before ) && empty( decls_after )) );
220
221	// Create a new Compound Statement to hold the new decls/stmts
222	ast::CompoundStmt * compound = new ast::CompoundStmt( stmt->location );
223
224	// Take all the declarations that go before
225	__pass::take_all( std::back_inserter( compound->kids ), decls_before );
226	__pass::take_all( std::back_inserter( compound->kids ), stmts_before );
227
228	// Insert the original declaration
229	compound->kids.emplace_back( nstmt );
230
231	// Insert all the declarations that go before
232	__pass::take_all( std::back_inserter( compound->kids ), decls_after );
233	__pass::take_all( std::back_inserter( compound->kids ), stmts_after );
234
235	return {true, compound};
236	}
237
238	template< template <class...> class container_t >
239	template< typename object_t, typename super_t, typename field_t >
240	void __pass::resultNstmt<container_t>::apply(object_t * object, field_t super_t::* field) {
241	auto & container = object->*field;
242	__pedantic_pass_assert( container.size() <= values.size() );
243
244	auto cit = enumerate(container).begin();
245
246	container_t<ptr<Stmt>> nvals;
247	for (delta & d : values) {
248	if ( d.is_old ) {
249	__pedantic_pass_assert( cit.idx <= d.old_idx );
250	std::advance( cit, d.old_idx - cit.idx );
251	nvals.push_back( std::move( (*cit).val) );
252	} else {
253	nvals.push_back( std::move(d.new_val) );
254	}
255	}
256
257	container = std::move(nvals);
258	}
259
260	template< template <class...> class container_t >
261	template< template <class...> class incontainer_t >
262	void __pass::resultNstmt< container_t >::take_all( incontainer_t<ptr<Stmt>> * stmts ) {
263	if (!stmts \|\| stmts->empty()) return;
264
265	std::transform(stmts->begin(), stmts->end(), std::back_inserter( values ),
266	[](ast::ptr<ast::Stmt>& stmt) -> delta {
267	return delta( stmt.release(), -1, false );
268	});
269	stmts->clear();
270	differs = true;
271	}
272
273	template< template<class...> class container_t >
274	template< template<class...> class incontainer_t >
275	void __pass::resultNstmt< container_t >::take_all( incontainer_t<ptr<Decl>> * decls ) {
276	if (!decls \|\| decls->empty()) return;
277
278	std::transform(decls->begin(), decls->end(), std::back_inserter( values ),
279	[](ast::ptr<ast::Decl>& decl) -> delta {
280	auto loc = decl->location;
281	auto stmt = new DeclStmt( loc, decl.release() );
282	return delta( stmt, -1, false );
283	});
284	decls->clear();
285	differs = true;
286	}
287
288	template< typename core_t >
289	template< template <class...> class container_t >
290	__pass::template resultNstmt<container_t> ast::Pass< core_t >::call_accept( const container_t< ptr<Stmt> > & statements ) {
291	__pedantic_pass_assert( __visit_children() );
292	if( statements.empty() ) return {};
293
294	// We are going to aggregate errors for all these statements
295	SemanticErrorException errors;
296
297	// add a few useful symbols to the scope
298	using __pass::empty;
299
300	// get the stmts/decls that will need to be spliced in
301	auto stmts_before = __pass::stmtsToAddBefore( core, 0 );
302	auto stmts_after = __pass::stmtsToAddAfter ( core, 0 );
303	auto decls_before = __pass::declsToAddBefore( core, 0 );
304	auto decls_after = __pass::declsToAddAfter ( core, 0 );
305
306	// These may be modified by subnode but most be restored once we exit this statemnet.
307	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
308	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
309	ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
310	ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
311
312	// update pass statitistics
313	pass_visitor_stats.depth++;
314	pass_visitor_stats.max->push(pass_visitor_stats.depth);
315	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
316
317	__pass::resultNstmt<container_t> new_kids;
318	for( auto value : enumerate( statements ) ) {
319	try {
320	size_t i = value.idx;
321	const Stmt * stmt = value.val;
322	__pedantic_pass_assert( stmt );
323	const ast::Stmt * new_stmt = stmt->accept( *this );
324	assert( new_stmt );
325	if(new_stmt != stmt ) { new_kids.differs = true; }
326
327	// Make sure that it is either adding statements or declartions but not both
328	// this is because otherwise the order would be awkward to predict
329	assert(( empty( stmts_before ) && empty( stmts_after ))
330	\|\| ( empty( decls_before ) && empty( decls_after )) );
331
332	// Take all the statements which should have gone after, N/A for first iteration
333	new_kids.take_all( decls_before );
334	new_kids.take_all( stmts_before );
335
336	// Now add the statement if there is one
337	if(new_stmt != stmt) {
338	new_kids.values.emplace_back( new_stmt, i, false );
339	} else {
340	new_kids.values.emplace_back( nullptr, i, true );
341	}
342
343	// Take all the declarations that go before
344	new_kids.take_all( decls_after );
345	new_kids.take_all( stmts_after );
346	}
347	catch ( SemanticErrorException &e ) {
348	errors.append( e );
349	}
350	}
351	pass_visitor_stats.depth--;
352	if ( !errors.isEmpty() ) { throw errors; }
353
354	return new_kids;
355	}
356
357	template< template <class...> class container_t, typename node_t >
358	template< typename object_t, typename super_t, typename field_t >
359	void __pass::resultN<container_t, node_t>::apply(object_t * object, field_t super_t::* field) {
360	auto & container = object->*field;
361	__pedantic_pass_assert( container.size() == values.size() );
362
363	for(size_t i = 0; i < container.size(); i++) {
364	// Take all the elements that are different in 'values'
365	// and swap them into 'container'
366	if( values[i] != nullptr ) swap(container[i], values[i]);
367	}
368
369	// Now the original containers should still have the unchanged values
370	// but also contain the new values
371	}
372
373	template< typename core_t >
374	template< template <class...> class container_t, typename node_t >
375	__pass::template resultN<container_t, node_t> ast::Pass< core_t >::call_accept( const container_t< ast::ptr<node_t> > & container ) {
376	__pedantic_pass_assert( __visit_children() );
377	if( container.empty() ) return {};
378	SemanticErrorException errors;
379
380	pass_visitor_stats.depth++;
381	pass_visitor_stats.max->push(pass_visitor_stats.depth);
382	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
383
384	bool mutated = false;
385	container_t<ptr<node_t>> new_kids;
386	for ( const node_t * node : container ) {
387	try {
388	__pedantic_pass_assert( node );
389	const node_t * new_stmt = strict_dynamic_cast< const node_t * >( node->accept( *this ) );
390	if(new_stmt != node ) {
391	mutated = true;
392	new_kids.emplace_back( new_stmt );
393	} else {
394	new_kids.emplace_back( nullptr );
395	}
396
397	}
398	catch( SemanticErrorException &e ) {
399	errors.append( e );
400	}
401	}
402
403	__pedantic_pass_assert( new_kids.size() == container.size() );
404	pass_visitor_stats.depth--;
405	if ( ! errors.isEmpty() ) { throw errors; }
406
407	return ast::__pass::resultN<container_t, node_t>{ mutated, new_kids };
408	}
409
410	template< typename core_t >
411	template<typename node_t, typename super_t, typename field_t>
412	void ast::Pass< core_t >::maybe_accept(
413	const node_t * & parent,
414	field_t super_t::*field
415	) {
416	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
417
418	if(__pass::skip(parent->*field)) return;
419	const auto & old_val = __pass::get(parent->*field, 0);
420
421	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
422
423	auto new_val = call_accept( old_val );
424
425	static_assert( !std::is_same<const ast::Node , decltype(new_val)>::value / \|\| std::is_same<int, decltype(old_val)>::value */, "ERROR");
426
427	if( new_val.differs ) {
428	auto new_parent = __pass::mutate<core_t>(parent);
429	new_val.apply(new_parent, field);
430	parent = new_parent;
431	}
432	}
433
434	template< typename core_t >
435	template<typename node_t, typename super_t, typename field_t>
436	void ast::Pass< core_t >::maybe_accept_top(
437	const node_t * & parent,
438	field_t super_t::*field
439	) {
440	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
441
442	if(__pass::skip(parent->*field)) return;
443	const auto & old_val = __pass::get(parent->*field, 0);
444
445	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
446
447	auto new_val = call_accept_top( old_val );
448
449	static_assert( !std::is_same<const ast::Node , decltype(new_val)>::value / \|\| std::is_same<int, decltype(old_val)>::value */, "ERROR");
450
451	if( new_val.differs ) {
452	auto new_parent = __pass::mutate<core_t>(parent);
453	new_val.apply(new_parent, field);
454	parent = new_parent;
455	}
456	}
457
458	template< typename core_t >
459	template<typename node_t, typename super_t, typename field_t>
460	void ast::Pass< core_t >::maybe_accept_as_compound(
461	const node_t * & parent,
462	field_t super_t::*child
463	) {
464	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
465
466	if(__pass::skip(parent->*child)) return;
467	const auto & old_val = __pass::get(parent->*child, 0);
468
469	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
470
471	auto new_val = call_accept_as_compound( old_val );
472
473	static_assert( !std::is_same<const ast::Node *, decltype(new_val)>::value \|\| std::is_same<int, decltype(old_val)>::value, "ERROR");
474
475	if( new_val.differs ) {
476	auto new_parent = __pass::mutate<core_t>(parent);
477	new_val.apply( new_parent, child );
478	parent = new_parent;
479	}
480	}
481
482	}
483
484	//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
485	//========================================================================================================================================================================
486	//========================================================================================================================================================================
487	//========================================================================================================================================================================
488	//========================================================================================================================================================================
489	//========================================================================================================================================================================
490	//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
491
492	template< typename core_t >
493	inline void ast::accept_all( std::list< ast::ptr<ast::Decl> > & decls, ast::Pass< core_t > & visitor ) {
494	// We are going to aggregate errors for all these statements
495	SemanticErrorException errors;
496
497	// add a few useful symbols to the scope
498	using __pass::empty;
499
500	// get the stmts/decls that will need to be spliced in
501	auto decls_before = __pass::declsToAddBefore( visitor.core, 0);
502	auto decls_after = __pass::declsToAddAfter ( visitor.core, 0);
503
504	// update pass statitistics
505	pass_visitor_stats.depth++;
506	pass_visitor_stats.max->push(pass_visitor_stats.depth);
507	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
508
509	for ( std::list< ast::ptr<ast::Decl> >::iterator i = decls.begin(); ; ++i ) {
510	// splice in new declarations after previous decl
511	if ( !empty( decls_after ) ) { decls.splice( i, *decls_after ); }
512
513	if ( i == decls.end() ) break;
514
515	try {
516	// run visitor on declaration
517	ast::ptr<ast::Decl> & node = *i;
518	assert( node );
519	node = node->accept( visitor );
520	}
521	catch( SemanticErrorException &e ) {
522	if (__pass::on_error (visitor.core, *i, 0))
523	errors.append( e );
524	}
525
526	// splice in new declarations before current decl
527	if ( !empty( decls_before ) ) { decls.splice( i, *decls_before ); }
528	}
529	pass_visitor_stats.depth--;
530	if ( !errors.isEmpty() ) { throw errors; }
531	}
532
533	template< typename core_t >
534	inline void ast::accept_all( ast::TranslationUnit & unit, ast::Pass< core_t > & visitor ) {
535	if ( auto ptr = __pass::translation_unit::get_cptr( visitor.core, 0 ) ) {
536	ValueGuard<const TranslationUnit > guard( ptr );
537	*ptr = &unit;
538	return ast::accept_all( unit.decls, visitor );
539	} else {
540	return ast::accept_all( unit.decls, visitor );
541	}
542	}
543
544	// A NOTE ON THE ORDER OF TRAVERSAL
545	//
546	// Types and typedefs have their base types visited before they are added to the type table. This is ok, since there is
547	// no such thing as a recursive type or typedef.
548	//
549	// typedef struct { T *x; } T; // never allowed
550	//
551	// for structs/unions, it is possible to have recursion, so the decl should be added as if it's incomplete to begin, the
552	// members are traversed, and then the complete type should be added (assuming the type is completed by this particular
553	// declaration).
554	//
555	// struct T { struct T *x; }; // allowed
556	//
557	// It is important to add the complete type to the symbol table after the members/base has been traversed, since that
558	// traversal may modify the definition of the type and these modifications should be visible when the symbol table is
559	// queried later in this pass.
560
561	//--------------------------------------------------------------------------
562	// ObjectDecl
563	template< typename core_t >
564	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::ObjectDecl * node ) {
565	VISIT_START( node );
566
567	if ( __visit_children() ) {
568	{
569	guard_symtab guard { *this };
570	maybe_accept( node, &ObjectDecl::type );
571	}
572	maybe_accept( node, &ObjectDecl::init );
573	maybe_accept( node, &ObjectDecl::bitfieldWidth );
574	maybe_accept( node, &ObjectDecl::attributes );
575	}
576
577	__pass::symtab::addId( core, 0, node );
578
579	VISIT_END( DeclWithType, node );
580	}
581
582	//--------------------------------------------------------------------------
583	// FunctionDecl
584	template< typename core_t >
585	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::FunctionDecl * node ) {
586	VISIT_START( node );
587
588	__pass::symtab::addId( core, 0, node );
589
590	if ( __visit_children() ) {
591	maybe_accept( node, &FunctionDecl::withExprs );
592	}
593	{
594	// with clause introduces a level of scope (for the with expression members).
595	// with clause exprs are added to the symbol table before parameters so that parameters
596	// shadow with exprs and not the other way around.
597	guard_symtab guard { *this };
598	__pass::symtab::addWith( core, 0, node->withExprs, node );
599	{
600	guard_symtab guard { *this };
601	// implicit add __func__ identifier as specified in the C manual 6.4.2.2
602	// This is a C name and so has C linkage.
603	static ast::ptr< ast::ObjectDecl > func{ new ast::ObjectDecl{
604	CodeLocation{}, "__func__",
605	new ast::ArrayType{
606	new ast::BasicType{ ast::BasicType::Char, ast::CV::Const },
607	nullptr, VariableLen, DynamicDim
608	},
609	nullptr,
610	ast::Storage::Classes(),
611	ast::Linkage::C,
612	} };
613	__pass::symtab::addId( core, 0, func );
614	if ( __visit_children() ) {
615	maybe_accept( node, &FunctionDecl::type_params );
616	maybe_accept( node, &FunctionDecl::assertions );
617	maybe_accept( node, &FunctionDecl::params );
618	maybe_accept( node, &FunctionDecl::returns );
619	maybe_accept( node, &FunctionDecl::type );
620	maybe_accept( node, &FunctionDecl::attributes );
621	// First remember that we are now within a function.
622	ValueGuard< bool > oldInFunction( inFunction );
623	inFunction = true;
624	// The function body needs to have the same scope as parameters.
625	// A CompoundStmt will not enter a new scope if atFunctionTop is true.
626	ValueGuard< bool > oldAtFunctionTop( atFunctionTop );
627	atFunctionTop = true;
628	maybe_accept( node, &FunctionDecl::stmts );
629	}
630	}
631	}
632
633	VISIT_END( DeclWithType, node );
634	}
635
636	//--------------------------------------------------------------------------
637	// StructDecl
638	template< typename core_t >
639	const ast::Decl * ast::Pass< core_t >::visit( const ast::StructDecl * node ) {
640	VISIT_START( node );
641
642	// make up a forward declaration and add it before processing the members
643	// needs to be on the heap because addStruct saves the pointer
644	__pass::symtab::addStructFwd( core, 0, node );
645
646	if ( __visit_children() ) {
647	guard_symtab guard { * this };
648	maybe_accept( node, &StructDecl::params );
649	maybe_accept( node, &StructDecl::members );
650	maybe_accept( node, &StructDecl::attributes );
651	}
652
653	// this addition replaces the forward declaration
654	__pass::symtab::addStruct( core, 0, node );
655
656	VISIT_END( Decl, node );
657	}
658
659	//--------------------------------------------------------------------------
660	// UnionDecl
661	template< typename core_t >
662	const ast::Decl * ast::Pass< core_t >::visit( const ast::UnionDecl * node ) {
663	VISIT_START( node );
664
665	// make up a forward declaration and add it before processing the members
666	__pass::symtab::addUnionFwd( core, 0, node );
667
668	if ( __visit_children() ) {
669	guard_symtab guard { * this };
670	maybe_accept( node, &UnionDecl::params );
671	maybe_accept( node, &UnionDecl::members );
672	maybe_accept( node, &UnionDecl::attributes );
673	}
674
675	__pass::symtab::addUnion( core, 0, node );
676
677	VISIT_END( Decl, node );
678	}
679
680	//--------------------------------------------------------------------------
681	// EnumDecl
682	template< typename core_t >
683	const ast::Decl * ast::Pass< core_t >::visit( const ast::EnumDecl * node ) {
684	VISIT_START( node );
685
686	__pass::symtab::addEnum( core, 0, node );
687
688	if ( __visit_children() ) {
689	if ( node->hide == ast::EnumDecl::EnumHiding::Hide ) {
690	guard_symtab guard { *this };
691	maybe_accept( node, &EnumDecl::base );
692	maybe_accept( node, &EnumDecl::params );
693	maybe_accept( node, &EnumDecl::members );
694	maybe_accept( node, &EnumDecl::attributes );
695	} else {
696	maybe_accept( node, &EnumDecl::base );
697	maybe_accept( node, &EnumDecl::params );
698	maybe_accept( node, &EnumDecl::members );
699	maybe_accept( node, &EnumDecl::attributes );
700	}
701	}
702
703	VISIT_END( Decl, node );
704	}
705
706	//--------------------------------------------------------------------------
707	// TraitDecl
708	template< typename core_t >
709	const ast::Decl * ast::Pass< core_t >::visit( const ast::TraitDecl * node ) {
710	VISIT_START( node );
711
712	if ( __visit_children() ) {
713	guard_symtab guard { *this };
714	maybe_accept( node, &TraitDecl::params );
715	maybe_accept( node, &TraitDecl::members );
716	maybe_accept( node, &TraitDecl::attributes );
717	}
718
719	__pass::symtab::addTrait( core, 0, node );
720
721	VISIT_END( Decl, node );
722	}
723
724	//--------------------------------------------------------------------------
725	// TypeDecl
726	template< typename core_t >
727	const ast::Decl * ast::Pass< core_t >::visit( const ast::TypeDecl * node ) {
728	VISIT_START( node );
729
730	if ( __visit_children() ) {
731	guard_symtab guard { *this };
732	maybe_accept( node, &TypeDecl::base );
733	}
734
735	// see A NOTE ON THE ORDER OF TRAVERSAL, above
736	// note that assertions come after the type is added to the symtab, since they are not part of the type proper
737	// and may depend on the type itself
738	__pass::symtab::addType( core, 0, node );
739
740	if ( __visit_children() ) {
741	maybe_accept( node, &TypeDecl::assertions );
742
743	{
744	guard_symtab guard { *this };
745	maybe_accept( node, &TypeDecl::init );
746	}
747	}
748
749	VISIT_END( Decl, node );
750	}
751
752	//--------------------------------------------------------------------------
753	// TypedefDecl
754	template< typename core_t >
755	const ast::Decl * ast::Pass< core_t >::visit( const ast::TypedefDecl * node ) {
756	VISIT_START( node );
757
758	if ( __visit_children() ) {
759	guard_symtab guard { *this };
760	maybe_accept( node, &TypedefDecl::base );
761	}
762
763	__pass::symtab::addType( core, 0, node );
764
765	if ( __visit_children() ) {
766	maybe_accept( node, &TypedefDecl::assertions );
767	}
768
769	VISIT_END( Decl, node );
770	}
771
772	//--------------------------------------------------------------------------
773	// AsmDecl
774	template< typename core_t >
775	const ast::AsmDecl * ast::Pass< core_t >::visit( const ast::AsmDecl * node ) {
776	VISIT_START( node );
777
778	if ( __visit_children() ) {
779	maybe_accept( node, &AsmDecl::stmt );
780	}
781
782	VISIT_END( AsmDecl, node );
783	}
784
785	//--------------------------------------------------------------------------
786	// DirectiveDecl
787	template< typename core_t >
788	const ast::DirectiveDecl * ast::Pass< core_t >::visit( const ast::DirectiveDecl * node ) {
789	VISIT_START( node );
790
791	if ( __visit_children() ) {
792	maybe_accept( node, &DirectiveDecl::stmt );
793	}
794
795	VISIT_END( DirectiveDecl, node );
796	}
797
798	//--------------------------------------------------------------------------
799	// StaticAssertDecl
800	template< typename core_t >
801	const ast::StaticAssertDecl * ast::Pass< core_t >::visit( const ast::StaticAssertDecl * node ) {
802	VISIT_START( node );
803
804	if ( __visit_children() ) {
805	maybe_accept_top( node, &StaticAssertDecl::cond );
806	maybe_accept( node, &StaticAssertDecl::msg );
807	}
808
809	VISIT_END( StaticAssertDecl, node );
810	}
811
812	//--------------------------------------------------------------------------
813	// InlineMemberDecl
814	template< typename core_t >
815	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::InlineMemberDecl * node ) {
816	VISIT_START( node );
817
818	if ( __visit_children() ) {
819	{
820	guard_symtab guard { *this };
821	maybe_accept( node, &InlineMemberDecl::type );
822	}
823	}
824
825	VISIT_END( DeclWithType, node );
826	}
827
828	//--------------------------------------------------------------------------
829	// CompoundStmt
830	template< typename core_t >
831	const ast::CompoundStmt * ast::Pass< core_t >::visit( const ast::CompoundStmt * node ) {
832	VISIT_START( node );
833
834	if ( __visit_children() ) {
835	// Do not enter (or leave) a new scope if atFunctionTop. Remember to save the result.
836	auto guard1 = makeFuncGuard( [this, enterScope = !this->atFunctionTop]() {
837	if ( enterScope ) {
838	__pass::symtab::enter(core, 0);
839	}
840	}, [this, leaveScope = !this->atFunctionTop]() {
841	if ( leaveScope ) {
842	__pass::symtab::leave(core, 0);
843	}
844	});
845	ValueGuard< bool > guard2( atFunctionTop );
846	atFunctionTop = false;
847	guard_scope guard3 { *this };
848	maybe_accept( node, &CompoundStmt::kids );
849	}
850
851	VISIT_END( CompoundStmt, node );
852	}
853
854	//--------------------------------------------------------------------------
855	// ExprStmt
856	template< typename core_t >
857	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ExprStmt * node ) {
858	VISIT_START( node );
859
860	if ( __visit_children() ) {
861	maybe_accept_top( node, &ExprStmt::expr );
862	}
863
864	VISIT_END( Stmt, node );
865	}
866
867	//--------------------------------------------------------------------------
868	// AsmStmt
869	template< typename core_t >
870	const ast::Stmt * ast::Pass< core_t >::visit( const ast::AsmStmt * node ) {
871	VISIT_START( node )
872
873	if ( __visit_children() ) {
874	maybe_accept( node, &AsmStmt::instruction );
875	maybe_accept( node, &AsmStmt::output );
876	maybe_accept( node, &AsmStmt::input );
877	maybe_accept( node, &AsmStmt::clobber );
878	}
879
880	VISIT_END( Stmt, node );
881	}
882
883	//--------------------------------------------------------------------------
884	// DirectiveStmt
885	template< typename core_t >
886	const ast::Stmt * ast::Pass< core_t >::visit( const ast::DirectiveStmt * node ) {
887	VISIT_START( node )
888
889	VISIT_END( Stmt, node );
890	}
891
892	//--------------------------------------------------------------------------
893	// IfStmt
894	template< typename core_t >
895	const ast::Stmt * ast::Pass< core_t >::visit( const ast::IfStmt * node ) {
896	VISIT_START( node );
897
898	if ( __visit_children() ) {
899	// if statements introduce a level of scope (for the initialization)
900	guard_symtab guard { *this };
901	maybe_accept( node, &IfStmt::inits );
902	maybe_accept_top( node, &IfStmt::cond );
903	maybe_accept_as_compound( node, &IfStmt::then );
904	maybe_accept_as_compound( node, &IfStmt::else_ );
905	}
906
907	VISIT_END( Stmt, node );
908	}
909
910	//--------------------------------------------------------------------------
911	// WhileDoStmt
912	template< typename core_t >
913	const ast::Stmt * ast::Pass< core_t >::visit( const ast::WhileDoStmt * node ) {
914	VISIT_START( node );
915
916	if ( __visit_children() ) {
917	// while statements introduce a level of scope (for the initialization)
918	guard_symtab guard { *this };
919	maybe_accept( node, &WhileDoStmt::inits );
920	maybe_accept_top( node, &WhileDoStmt::cond );
921	maybe_accept_as_compound( node, &WhileDoStmt::body );
922	}
923
924	VISIT_END( Stmt, node );
925	}
926
927	//--------------------------------------------------------------------------
928	// ForStmt
929	template< typename core_t >
930	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ForStmt * node ) {
931	VISIT_START( node );
932
933	if ( __visit_children() ) {
934	// for statements introduce a level of scope (for the initialization)
935	guard_symtab guard { *this };
936	// xxx - old ast does not create WithStmtsToAdd scope for loop inits. should revisit this later.
937	maybe_accept( node, &ForStmt::inits );
938	maybe_accept_top( node, &ForStmt::cond );
939	maybe_accept_top( node, &ForStmt::inc );
940	maybe_accept_as_compound( node, &ForStmt::body );
941	}
942
943	VISIT_END( Stmt, node );
944	}
945
946	//--------------------------------------------------------------------------
947	// SwitchStmt
948	template< typename core_t >
949	const ast::Stmt * ast::Pass< core_t >::visit( const ast::SwitchStmt * node ) {
950	VISIT_START( node );
951
952	if ( __visit_children() ) {
953	maybe_accept_top( node, &SwitchStmt::cond );
954	maybe_accept( node, &SwitchStmt::cases );
955	}
956
957	VISIT_END( Stmt, node );
958	}
959
960	//--------------------------------------------------------------------------
961	// CaseClause
962	template< typename core_t >
963	const ast::CaseClause * ast::Pass< core_t >::visit( const ast::CaseClause * node ) {
964	VISIT_START( node );
965
966	if ( __visit_children() ) {
967	maybe_accept_top( node, &CaseClause::cond );
968	maybe_accept( node, &CaseClause::stmts );
969	}
970
971	VISIT_END( CaseClause, node );
972	}
973
974	//--------------------------------------------------------------------------
975	// BranchStmt
976	template< typename core_t >
977	const ast::Stmt * ast::Pass< core_t >::visit( const ast::BranchStmt * node ) {
978	VISIT_START( node );
979	VISIT_END( Stmt, node );
980	}
981
982	//--------------------------------------------------------------------------
983	// ReturnStmt
984	template< typename core_t >
985	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ReturnStmt * node ) {
986	VISIT_START( node );
987
988	if ( __visit_children() ) {
989	maybe_accept_top( node, &ReturnStmt::expr );
990	}
991
992	VISIT_END( Stmt, node );
993	}
994
995	//--------------------------------------------------------------------------
996	// ThrowStmt
997	template< typename core_t >
998	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ThrowStmt * node ) {
999	VISIT_START( node );
1000
1001	if ( __visit_children() ) {
1002	maybe_accept( node, &ThrowStmt::expr );
1003	maybe_accept( node, &ThrowStmt::target );
1004	}
1005
1006	VISIT_END( Stmt, node );
1007	}
1008
1009	//--------------------------------------------------------------------------
1010	// TryStmt
1011	template< typename core_t >
1012	const ast::Stmt * ast::Pass< core_t >::visit( const ast::TryStmt * node ) {
1013	VISIT_START( node );
1014
1015	if ( __visit_children() ) {
1016	maybe_accept( node, &TryStmt::body );
1017	maybe_accept( node, &TryStmt::handlers );
1018	maybe_accept( node, &TryStmt::finally );
1019	}
1020
1021	VISIT_END( Stmt, node );
1022	}
1023
1024	//--------------------------------------------------------------------------
1025	// CatchClause
1026	template< typename core_t >
1027	const ast::CatchClause * ast::Pass< core_t >::visit( const ast::CatchClause * node ) {
1028	VISIT_START( node );
1029
1030	if ( __visit_children() ) {
1031	// catch statements introduce a level of scope (for the caught exception)
1032	guard_symtab guard { *this };
1033	maybe_accept( node, &CatchClause::decl );
1034	maybe_accept_top( node, &CatchClause::cond );
1035	maybe_accept_as_compound( node, &CatchClause::body );
1036	}
1037
1038	VISIT_END( CatchClause, node );
1039	}
1040
1041	//--------------------------------------------------------------------------
1042	// FinallyClause
1043	template< typename core_t >
1044	const ast::FinallyClause * ast::Pass< core_t >::visit( const ast::FinallyClause * node ) {
1045	VISIT_START( node );
1046
1047	if ( __visit_children() ) {
1048	maybe_accept( node, &FinallyClause::body );
1049	}
1050
1051	VISIT_END( FinallyClause, node );
1052	}
1053
1054	//--------------------------------------------------------------------------
1055	// FinallyStmt
1056	template< typename core_t >
1057	const ast::Stmt * ast::Pass< core_t >::visit( const ast::SuspendStmt * node ) {
1058	VISIT_START( node );
1059
1060	if ( __visit_children() ) {
1061	maybe_accept( node, &SuspendStmt::then );
1062	}
1063
1064	VISIT_END( Stmt, node );
1065	}
1066
1067	//--------------------------------------------------------------------------
1068	// WhenClause
1069	template< typename core_t >
1070	const ast::WhenClause * ast::Pass< core_t >::visit( const ast::WhenClause * node ) {
1071	VISIT_START( node );
1072
1073	if ( __visit_children() ) {
1074	maybe_accept( node, &WhenClause::target );
1075	maybe_accept( node, &WhenClause::stmt );
1076	maybe_accept( node, &WhenClause::when_cond );
1077	}
1078
1079	VISIT_END( WhenClause, node );
1080	}
1081
1082	//--------------------------------------------------------------------------
1083	// WaitForStmt
1084	template< typename core_t >
1085	const ast::Stmt * ast::Pass< core_t >::visit( const ast::WaitForStmt * node ) {
1086	VISIT_START( node );
1087
1088	if ( __visit_children() ) {
1089	maybe_accept( node, &WaitForStmt::clauses );
1090	maybe_accept( node, &WaitForStmt::timeout_time );
1091	maybe_accept( node, &WaitForStmt::timeout_stmt );
1092	maybe_accept( node, &WaitForStmt::timeout_cond );
1093	maybe_accept( node, &WaitForStmt::else_stmt );
1094	maybe_accept( node, &WaitForStmt::else_cond );
1095	}
1096
1097	VISIT_END( Stmt, node );
1098	}
1099
1100	//--------------------------------------------------------------------------
1101	// WaitForClause
1102	template< typename core_t >
1103	const ast::WaitForClause * ast::Pass< core_t >::visit( const ast::WaitForClause * node ) {
1104	VISIT_START( node );
1105
1106	if ( __visit_children() ) {
1107	maybe_accept( node, &WaitForClause::target );
1108	maybe_accept( node, &WaitForClause::target_args );
1109	maybe_accept( node, &WaitForClause::stmt );
1110	maybe_accept( node, &WaitForClause::when_cond );
1111	}
1112
1113	VISIT_END( WaitForClause, node );
1114	}
1115
1116	//--------------------------------------------------------------------------
1117	// WaitUntilStmt
1118	template< typename core_t >
1119	const ast::Stmt * ast::Pass< core_t >::visit( const ast::WaitUntilStmt * node ) {
1120	VISIT_START( node );
1121
1122	if ( __visit_children() ) {
1123	maybe_accept( node, &WaitUntilStmt::clauses );
1124	maybe_accept( node, &WaitUntilStmt::timeout_time );
1125	maybe_accept( node, &WaitUntilStmt::timeout_stmt );
1126	maybe_accept( node, &WaitUntilStmt::timeout_cond );
1127	maybe_accept( node, &WaitUntilStmt::else_stmt );
1128	maybe_accept( node, &WaitUntilStmt::else_cond );
1129	}
1130
1131	VISIT_END( Stmt, node );
1132	}
1133
1134	//--------------------------------------------------------------------------
1135	// WithStmt
1136	template< typename core_t >
1137	const ast::Decl * ast::Pass< core_t >::visit( const ast::WithStmt * node ) {
1138	VISIT_START( node );
1139
1140	if ( __visit_children() ) {
1141	maybe_accept( node, &WithStmt::exprs );
1142	{
1143	// catch statements introduce a level of scope (for the caught exception)
1144	guard_symtab guard { *this };
1145	__pass::symtab::addWith( core, 0, node->exprs, node );
1146	maybe_accept( node, &WithStmt::stmt );
1147	}
1148	}
1149
1150	VISIT_END( Stmt, node );
1151	}
1152
1153	//--------------------------------------------------------------------------
1154	// NullStmt
1155	template< typename core_t >
1156	const ast::NullStmt * ast::Pass< core_t >::visit( const ast::NullStmt * node ) {
1157	VISIT_START( node );
1158	VISIT_END( NullStmt, node );
1159	}
1160
1161	//--------------------------------------------------------------------------
1162	// DeclStmt
1163	template< typename core_t >
1164	const ast::Stmt * ast::Pass< core_t >::visit( const ast::DeclStmt * node ) {
1165	VISIT_START( node );
1166
1167	if ( __visit_children() ) {
1168	maybe_accept( node, &DeclStmt::decl );
1169	}
1170
1171	VISIT_END( Stmt, node );
1172	}
1173
1174	//--------------------------------------------------------------------------
1175	// ImplicitCtorDtorStmt
1176	template< typename core_t >
1177	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ImplicitCtorDtorStmt * node ) {
1178	VISIT_START( node );
1179
1180	// For now this isn't visited, it is unclear if this causes problem
1181	// if all tests are known to pass, remove this code
1182	if ( __visit_children() ) {
1183	maybe_accept( node, &ImplicitCtorDtorStmt::callStmt );
1184	}
1185
1186	VISIT_END( Stmt, node );
1187	}
1188
1189	//--------------------------------------------------------------------------
1190	// MutexStmt
1191	template< typename core_t >
1192	const ast::Stmt * ast::Pass< core_t >::visit( const ast::MutexStmt * node ) {
1193	VISIT_START( node );
1194
1195	if ( __visit_children() ) {
1196	// mutex statements introduce a level of scope (for the initialization)
1197	guard_symtab guard { *this };
1198	maybe_accept( node, &MutexStmt::stmt );
1199	maybe_accept( node, &MutexStmt::mutexObjs );
1200	}
1201
1202	VISIT_END( Stmt, node );
1203	}
1204
1205	//--------------------------------------------------------------------------
1206	// ApplicationExpr
1207	template< typename core_t >
1208	const ast::Expr * ast::Pass< core_t >::visit( const ast::ApplicationExpr * node ) {
1209	VISIT_START( node );
1210
1211	if ( __visit_children() ) {
1212	{
1213	guard_symtab guard { *this };
1214	maybe_accept( node, &ApplicationExpr::result );
1215	}
1216	maybe_accept( node, &ApplicationExpr::func );
1217	maybe_accept( node, &ApplicationExpr::args );
1218	}
1219
1220	VISIT_END( Expr, node );
1221	}
1222
1223	//--------------------------------------------------------------------------
1224	// UntypedExpr
1225	template< typename core_t >
1226	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedExpr * node ) {
1227	VISIT_START( node );
1228
1229	if ( __visit_children() ) {
1230	{
1231	guard_symtab guard { *this };
1232	maybe_accept( node, &UntypedExpr::result );
1233	}
1234
1235	maybe_accept( node, &UntypedExpr::args );
1236	}
1237
1238	VISIT_END( Expr, node );
1239	}
1240
1241	//--------------------------------------------------------------------------
1242	// NameExpr
1243	template< typename core_t >
1244	const ast::Expr * ast::Pass< core_t >::visit( const ast::NameExpr * node ) {
1245	VISIT_START( node );
1246
1247	if ( __visit_children() ) {
1248	guard_symtab guard { *this };
1249	maybe_accept( node, &NameExpr::result );
1250	}
1251
1252	VISIT_END( Expr, node );
1253	}
1254
1255	//--------------------------------------------------------------------------
1256	// QualifiedNameExpr
1257	template< typename core_t >
1258	const ast::Expr * ast::Pass< core_t >::visit( const ast::QualifiedNameExpr * node ) {
1259	VISIT_START( node );
1260	if ( __visit_children() ) {
1261	guard_symtab guard { *this };
1262	maybe_accept( node, &QualifiedNameExpr::type_decl );
1263	}
1264	VISIT_END( Expr, node );
1265	}
1266
1267	//--------------------------------------------------------------------------
1268	// CastExpr
1269	template< typename core_t >
1270	const ast::Expr * ast::Pass< core_t >::visit( const ast::CastExpr * node ) {
1271	VISIT_START( node );
1272
1273	if ( __visit_children() ) {
1274	{
1275	guard_symtab guard { *this };
1276	maybe_accept( node, &CastExpr::result );
1277	}
1278	maybe_accept( node, &CastExpr::arg );
1279	}
1280
1281	VISIT_END( Expr, node );
1282	}
1283
1284	//--------------------------------------------------------------------------
1285	// KeywordCastExpr
1286	template< typename core_t >
1287	const ast::Expr * ast::Pass< core_t >::visit( const ast::KeywordCastExpr * node ) {
1288	VISIT_START( node );
1289
1290	if ( __visit_children() ) {
1291	{
1292	guard_symtab guard { *this };
1293	maybe_accept( node, &KeywordCastExpr::result );
1294	}
1295	maybe_accept( node, &KeywordCastExpr::arg );
1296	}
1297
1298	VISIT_END( Expr, node );
1299	}
1300
1301	//--------------------------------------------------------------------------
1302	// VirtualCastExpr
1303	template< typename core_t >
1304	const ast::Expr * ast::Pass< core_t >::visit( const ast::VirtualCastExpr * node ) {
1305	VISIT_START( node );
1306
1307	if ( __visit_children() ) {
1308	{
1309	guard_symtab guard { *this };
1310	maybe_accept( node, &VirtualCastExpr::result );
1311	}
1312	maybe_accept( node, &VirtualCastExpr::arg );
1313	}
1314
1315	VISIT_END( Expr, node );
1316	}
1317
1318	//--------------------------------------------------------------------------
1319	// AddressExpr
1320	template< typename core_t >
1321	const ast::Expr * ast::Pass< core_t >::visit( const ast::AddressExpr * node ) {
1322	VISIT_START( node );
1323
1324	if ( __visit_children() ) {
1325	{
1326	guard_symtab guard { *this };
1327	maybe_accept( node, &AddressExpr::result );
1328	}
1329	maybe_accept( node, &AddressExpr::arg );
1330	}
1331
1332	VISIT_END( Expr, node );
1333	}
1334
1335	//--------------------------------------------------------------------------
1336	// LabelAddressExpr
1337	template< typename core_t >
1338	const ast::Expr * ast::Pass< core_t >::visit( const ast::LabelAddressExpr * node ) {
1339	VISIT_START( node );
1340
1341	if ( __visit_children() ) {
1342	guard_symtab guard { *this };
1343	maybe_accept( node, &LabelAddressExpr::result );
1344	}
1345
1346	VISIT_END( Expr, node );
1347	}
1348
1349	//--------------------------------------------------------------------------
1350	// UntypedMemberExpr
1351	template< typename core_t >
1352	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedMemberExpr * node ) {
1353	VISIT_START( node );
1354
1355	if ( __visit_children() ) {
1356	{
1357	guard_symtab guard { *this };
1358	maybe_accept( node, &UntypedMemberExpr::result );
1359	}
1360	maybe_accept( node, &UntypedMemberExpr::aggregate );
1361	maybe_accept( node, &UntypedMemberExpr::member );
1362	}
1363
1364	VISIT_END( Expr, node );
1365	}
1366
1367	//--------------------------------------------------------------------------
1368	// MemberExpr
1369	template< typename core_t >
1370	const ast::Expr * ast::Pass< core_t >::visit( const ast::MemberExpr * node ) {
1371	VISIT_START( node );
1372
1373	if ( __visit_children() ) {
1374	{
1375	guard_symtab guard { *this };
1376	maybe_accept( node, &MemberExpr::result );
1377	}
1378	maybe_accept( node, &MemberExpr::aggregate );
1379	}
1380
1381	VISIT_END( Expr, node );
1382	}
1383
1384	//--------------------------------------------------------------------------
1385	// VariableExpr
1386	template< typename core_t >
1387	const ast::Expr * ast::Pass< core_t >::visit( const ast::VariableExpr * node ) {
1388	VISIT_START( node );
1389
1390	if ( __visit_children() ) {
1391	guard_symtab guard { *this };
1392	maybe_accept( node, &VariableExpr::result );
1393	}
1394
1395	VISIT_END( Expr, node );
1396	}
1397
1398	//--------------------------------------------------------------------------
1399	// ConstantExpr
1400	template< typename core_t >
1401	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConstantExpr * node ) {
1402	VISIT_START( node );
1403
1404	if ( __visit_children() ) {
1405	guard_symtab guard { *this };
1406	maybe_accept( node, &ConstantExpr::result );
1407	}
1408
1409	VISIT_END( Expr, node );
1410	}
1411
1412	//--------------------------------------------------------------------------
1413	// SizeofExpr
1414	template< typename core_t >
1415	const ast::Expr * ast::Pass< core_t >::visit( const ast::SizeofExpr * node ) {
1416	VISIT_START( node );
1417
1418	if ( __visit_children() ) {
1419	{
1420	guard_symtab guard { *this };
1421	maybe_accept( node, &SizeofExpr::result );
1422	}
1423	if ( node->type ) {
1424	maybe_accept( node, &SizeofExpr::type );
1425	} else {
1426	maybe_accept( node, &SizeofExpr::expr );
1427	}
1428	}
1429
1430	VISIT_END( Expr, node );
1431	}
1432
1433	//--------------------------------------------------------------------------
1434	// AlignofExpr
1435	template< typename core_t >
1436	const ast::Expr * ast::Pass< core_t >::visit( const ast::AlignofExpr * node ) {
1437	VISIT_START( node );
1438
1439	if ( __visit_children() ) {
1440	{
1441	guard_symtab guard { *this };
1442	maybe_accept( node, &AlignofExpr::result );
1443	}
1444	if ( node->type ) {
1445	maybe_accept( node, &AlignofExpr::type );
1446	} else {
1447	maybe_accept( node, &AlignofExpr::expr );
1448	}
1449	}
1450
1451	VISIT_END( Expr, node );
1452	}
1453
1454	//--------------------------------------------------------------------------
1455	// UntypedOffsetofExpr
1456	template< typename core_t >
1457	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedOffsetofExpr * node ) {
1458	VISIT_START( node );
1459
1460	if ( __visit_children() ) {
1461	{
1462	guard_symtab guard { *this };
1463	maybe_accept( node, &UntypedOffsetofExpr::result );
1464	}
1465	maybe_accept( node, &UntypedOffsetofExpr::type );
1466	}
1467
1468	VISIT_END( Expr, node );
1469	}
1470
1471	//--------------------------------------------------------------------------
1472	// OffsetofExpr
1473	template< typename core_t >
1474	const ast::Expr * ast::Pass< core_t >::visit( const ast::OffsetofExpr * node ) {
1475	VISIT_START( node );
1476
1477	if ( __visit_children() ) {
1478	{
1479	guard_symtab guard { *this };
1480	maybe_accept( node, &OffsetofExpr::result );
1481	}
1482	maybe_accept( node, &OffsetofExpr::type );
1483	}
1484
1485	VISIT_END( Expr, node );
1486	}
1487
1488	//--------------------------------------------------------------------------
1489	// OffsetPackExpr
1490	template< typename core_t >
1491	const ast::Expr * ast::Pass< core_t >::visit( const ast::OffsetPackExpr * node ) {
1492	VISIT_START( node );
1493
1494	if ( __visit_children() ) {
1495	{
1496	guard_symtab guard { *this };
1497	maybe_accept( node, &OffsetPackExpr::result );
1498	}
1499	maybe_accept( node, &OffsetPackExpr::type );
1500	}
1501
1502	VISIT_END( Expr, node );
1503	}
1504
1505	//--------------------------------------------------------------------------
1506	// LogicalExpr
1507	template< typename core_t >
1508	const ast::Expr * ast::Pass< core_t >::visit( const ast::LogicalExpr * node ) {
1509	VISIT_START( node );
1510
1511	if ( __visit_children() ) {
1512	{
1513	guard_symtab guard { *this };
1514	maybe_accept( node, &LogicalExpr::result );
1515	}
1516	maybe_accept( node, &LogicalExpr::arg1 );
1517	maybe_accept( node, &LogicalExpr::arg2 );
1518	}
1519
1520	VISIT_END( Expr, node );
1521	}
1522
1523	//--------------------------------------------------------------------------
1524	// ConditionalExpr
1525	template< typename core_t >
1526	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConditionalExpr * node ) {
1527	VISIT_START( node );
1528
1529	if ( __visit_children() ) {
1530	{
1531	guard_symtab guard { *this };
1532	maybe_accept( node, &ConditionalExpr::result );
1533	}
1534	maybe_accept( node, &ConditionalExpr::arg1 );
1535	maybe_accept( node, &ConditionalExpr::arg2 );
1536	maybe_accept( node, &ConditionalExpr::arg3 );
1537	}
1538
1539	VISIT_END( Expr, node );
1540	}
1541
1542	//--------------------------------------------------------------------------
1543	// CommaExpr
1544	template< typename core_t >
1545	const ast::Expr * ast::Pass< core_t >::visit( const ast::CommaExpr * node ) {
1546	VISIT_START( node );
1547
1548	if ( __visit_children() ) {
1549	{
1550	guard_symtab guard { *this };
1551	maybe_accept( node, &CommaExpr::result );
1552	}
1553	maybe_accept( node, &CommaExpr::arg1 );
1554	maybe_accept( node, &CommaExpr::arg2 );
1555	}
1556
1557	VISIT_END( Expr, node );
1558	}
1559
1560	//--------------------------------------------------------------------------
1561	// TypeExpr
1562	template< typename core_t >
1563	const ast::Expr * ast::Pass< core_t >::visit( const ast::TypeExpr * node ) {
1564	VISIT_START( node );
1565
1566	if ( __visit_children() ) {
1567	{
1568	guard_symtab guard { *this };
1569	maybe_accept( node, &TypeExpr::result );
1570	}
1571	maybe_accept( node, &TypeExpr::type );
1572	}
1573
1574	VISIT_END( Expr, node );
1575	}
1576
1577	//--------------------------------------------------------------------------
1578	// DimensionExpr
1579	template< typename core_t >
1580	const ast::Expr * ast::Pass< core_t >::visit( const ast::DimensionExpr * node ) {
1581	VISIT_START( node );
1582
1583	if ( __visit_children() ) {
1584	guard_symtab guard { *this };
1585	maybe_accept( node, &DimensionExpr::result );
1586	}
1587
1588	VISIT_END( Expr, node );
1589	}
1590
1591	//--------------------------------------------------------------------------
1592	// AsmExpr
1593	template< typename core_t >
1594	const ast::Expr * ast::Pass< core_t >::visit( const ast::AsmExpr * node ) {
1595	VISIT_START( node );
1596
1597	if ( __visit_children() ) {
1598	{
1599	guard_symtab guard { *this };
1600	maybe_accept( node, &AsmExpr::result );
1601	}
1602	maybe_accept( node, &AsmExpr::constraint );
1603	maybe_accept( node, &AsmExpr::operand );
1604	}
1605
1606	VISIT_END( Expr, node );
1607	}
1608
1609	//--------------------------------------------------------------------------
1610	// ImplicitCopyCtorExpr
1611	template< typename core_t >
1612	const ast::Expr * ast::Pass< core_t >::visit( const ast::ImplicitCopyCtorExpr * node ) {
1613	VISIT_START( node );
1614
1615	if ( __visit_children() ) {
1616	{
1617	guard_symtab guard { *this };
1618	maybe_accept( node, &ImplicitCopyCtorExpr::result );
1619	}
1620	maybe_accept( node, &ImplicitCopyCtorExpr::callExpr );
1621	}
1622
1623	VISIT_END( Expr, node );
1624	}
1625
1626	//--------------------------------------------------------------------------
1627	// ConstructorExpr
1628	template< typename core_t >
1629	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConstructorExpr * node ) {
1630	VISIT_START( node );
1631
1632	if ( __visit_children() ) {
1633	{
1634	guard_symtab guard { *this };
1635	maybe_accept( node, &ConstructorExpr::result );
1636	}
1637	maybe_accept( node, &ConstructorExpr::callExpr );
1638	}
1639
1640	VISIT_END( Expr, node );
1641	}
1642
1643	//--------------------------------------------------------------------------
1644	// CompoundLiteralExpr
1645	template< typename core_t >
1646	const ast::Expr * ast::Pass< core_t >::visit( const ast::CompoundLiteralExpr * node ) {
1647	VISIT_START( node );
1648
1649	if ( __visit_children() ) {
1650	{
1651	guard_symtab guard { *this };
1652	maybe_accept( node, &CompoundLiteralExpr::result );
1653	}
1654	maybe_accept( node, &CompoundLiteralExpr::init );
1655	}
1656
1657	VISIT_END( Expr, node );
1658	}
1659
1660	//--------------------------------------------------------------------------
1661	// RangeExpr
1662	template< typename core_t >
1663	const ast::Expr * ast::Pass< core_t >::visit( const ast::RangeExpr * node ) {
1664	VISIT_START( node );
1665
1666	if ( __visit_children() ) {
1667	{
1668	guard_symtab guard { *this };
1669	maybe_accept( node, &RangeExpr::result );
1670	}
1671	maybe_accept( node, &RangeExpr::low );
1672	maybe_accept( node, &RangeExpr::high );
1673	}
1674
1675	VISIT_END( Expr, node );
1676	}
1677
1678	//--------------------------------------------------------------------------
1679	// UntypedTupleExpr
1680	template< typename core_t >
1681	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedTupleExpr * node ) {
1682	VISIT_START( node );
1683
1684	if ( __visit_children() ) {
1685	{
1686	guard_symtab guard { *this };
1687	maybe_accept( node, &UntypedTupleExpr::result );
1688	}
1689	maybe_accept( node, &UntypedTupleExpr::exprs );
1690	}
1691
1692	VISIT_END( Expr, node );
1693	}
1694
1695	//--------------------------------------------------------------------------
1696	// TupleExpr
1697	template< typename core_t >
1698	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleExpr * node ) {
1699	VISIT_START( node );
1700
1701	if ( __visit_children() ) {
1702	{
1703	guard_symtab guard { *this };
1704	maybe_accept( node, &TupleExpr::result );
1705	}
1706	maybe_accept( node, &TupleExpr::exprs );
1707	}
1708
1709	VISIT_END( Expr, node );
1710	}
1711
1712	//--------------------------------------------------------------------------
1713	// TupleIndexExpr
1714	template< typename core_t >
1715	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleIndexExpr * node ) {
1716	VISIT_START( node );
1717
1718	if ( __visit_children() ) {
1719	{
1720	guard_symtab guard { *this };
1721	maybe_accept( node, &TupleIndexExpr::result );
1722	}
1723	maybe_accept( node, &TupleIndexExpr::tuple );
1724	}
1725
1726	VISIT_END( Expr, node );
1727	}
1728
1729	//--------------------------------------------------------------------------
1730	// TupleAssignExpr
1731	template< typename core_t >
1732	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleAssignExpr * node ) {
1733	VISIT_START( node );
1734
1735	if ( __visit_children() ) {
1736	{
1737	guard_symtab guard { *this };
1738	maybe_accept( node, &TupleAssignExpr::result );
1739	}
1740	maybe_accept( node, &TupleAssignExpr::stmtExpr );
1741	}
1742
1743	VISIT_END( Expr, node );
1744	}
1745
1746	//--------------------------------------------------------------------------
1747	// StmtExpr
1748	template< typename core_t >
1749	const ast::Expr * ast::Pass< core_t >::visit( const ast::StmtExpr * node ) {
1750	VISIT_START( node );
1751
1752	if ( __visit_children() ) {
1753	// don't want statements from outer CompoundStmts to be added to this StmtExpr
1754	// get the stmts that will need to be spliced in
1755	auto stmts_before = __pass::stmtsToAddBefore( core, 0);
1756	auto stmts_after = __pass::stmtsToAddAfter ( core, 0);
1757
1758	// These may be modified by subnode but most be restored once we exit this statemnet.
1759	ValueGuardPtr< const ast::TypeSubstitution * > __old_env( __pass::typeSubs( core, 0 ) );
1760	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
1761	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
1762
1763	{
1764	guard_symtab guard { *this };
1765	maybe_accept( node, &StmtExpr::result );
1766	}
1767	maybe_accept( node, &StmtExpr::stmts );
1768	maybe_accept( node, &StmtExpr::returnDecls );
1769	maybe_accept( node, &StmtExpr::dtors );
1770	}
1771
1772	VISIT_END( Expr, node );
1773	}
1774
1775	//--------------------------------------------------------------------------
1776	// UniqueExpr
1777	template< typename core_t >
1778	const ast::Expr * ast::Pass< core_t >::visit( const ast::UniqueExpr * node ) {
1779	VISIT_START( node );
1780
1781	if ( __visit_children() ) {
1782	{
1783	guard_symtab guard { *this };
1784	maybe_accept( node, &UniqueExpr::result );
1785	}
1786	maybe_accept( node, &UniqueExpr::expr );
1787	}
1788
1789	VISIT_END( Expr, node );
1790	}
1791
1792	//--------------------------------------------------------------------------
1793	// UntypedInitExpr
1794	template< typename core_t >
1795	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedInitExpr * node ) {
1796	VISIT_START( node );
1797
1798	if ( __visit_children() ) {
1799	{
1800	guard_symtab guard { *this };
1801	maybe_accept( node, &UntypedInitExpr::result );
1802	}
1803	maybe_accept( node, &UntypedInitExpr::expr );
1804	// not currently visiting initAlts, but this doesn't matter since this node is only used in the resolver.
1805	}
1806
1807	VISIT_END( Expr, node );
1808	}
1809
1810	//--------------------------------------------------------------------------
1811	// InitExpr
1812	template< typename core_t >
1813	const ast::Expr * ast::Pass< core_t >::visit( const ast::InitExpr * node ) {
1814	VISIT_START( node );
1815
1816	if ( __visit_children() ) {
1817	{
1818	guard_symtab guard { *this };
1819	maybe_accept( node, &InitExpr::result );
1820	}
1821	maybe_accept( node, &InitExpr::expr );
1822	maybe_accept( node, &InitExpr::designation );
1823	}
1824
1825	VISIT_END( Expr, node );
1826	}
1827
1828	//--------------------------------------------------------------------------
1829	// DeletedExpr
1830	template< typename core_t >
1831	const ast::Expr * ast::Pass< core_t >::visit( const ast::DeletedExpr * node ) {
1832	VISIT_START( node );
1833
1834	if ( __visit_children() ) {
1835	{
1836	guard_symtab guard { *this };
1837	maybe_accept( node, &DeletedExpr::result );
1838	}
1839	maybe_accept( node, &DeletedExpr::expr );
1840	// don't visit deleteStmt, because it is a pointer to somewhere else in the tree.
1841	}
1842
1843	VISIT_END( Expr, node );
1844	}
1845
1846	//--------------------------------------------------------------------------
1847	// DefaultArgExpr
1848	template< typename core_t >
1849	const ast::Expr * ast::Pass< core_t >::visit( const ast::DefaultArgExpr * node ) {
1850	VISIT_START( node );
1851
1852	if ( __visit_children() ) {
1853	{
1854	guard_symtab guard { *this };
1855	maybe_accept( node, &DefaultArgExpr::result );
1856	}
1857	maybe_accept( node, &DefaultArgExpr::expr );
1858	}
1859
1860	VISIT_END( Expr, node );
1861	}
1862
1863	//--------------------------------------------------------------------------
1864	// GenericExpr
1865	template< typename core_t >
1866	const ast::Expr * ast::Pass< core_t >::visit( const ast::GenericExpr * node ) {
1867	VISIT_START( node );
1868
1869	if ( __visit_children() ) {
1870	{
1871	guard_symtab guard { *this };
1872	maybe_accept( node, &GenericExpr::result );
1873	}
1874	maybe_accept( node, &GenericExpr::control );
1875
1876	std::vector<GenericExpr::Association> new_kids;
1877	new_kids.reserve(node->associations.size());
1878	bool mutated = false;
1879	for( const auto & assoc : node->associations ) {
1880	const Type * type = nullptr;
1881	if( assoc.type ) {
1882	guard_symtab guard { *this };
1883	type = assoc.type->accept( *this );
1884	if( type != assoc.type ) mutated = true;
1885	}
1886	const Expr * expr = nullptr;
1887	if( assoc.expr ) {
1888	expr = assoc.expr->accept( *this );
1889	if( expr != assoc.expr ) mutated = true;
1890	}
1891	new_kids.emplace_back( type, expr );
1892	}
1893
1894	if(mutated) {
1895	auto n = __pass::mutate<core_t>(node);
1896	n->associations = std::move( new_kids );
1897	node = n;
1898	}
1899	}
1900
1901	VISIT_END( Expr, node );
1902	}
1903
1904	//--------------------------------------------------------------------------
1905	// VoidType
1906	template< typename core_t >
1907	const ast::Type * ast::Pass< core_t >::visit( const ast::VoidType * node ) {
1908	VISIT_START( node );
1909
1910	VISIT_END( Type, node );
1911	}
1912
1913	//--------------------------------------------------------------------------
1914	// BasicType
1915	template< typename core_t >
1916	const ast::Type * ast::Pass< core_t >::visit( const ast::BasicType * node ) {
1917	VISIT_START( node );
1918
1919	VISIT_END( Type, node );
1920	}
1921
1922	//--------------------------------------------------------------------------
1923	// PointerType
1924	template< typename core_t >
1925	const ast::Type * ast::Pass< core_t >::visit( const ast::PointerType * node ) {
1926	VISIT_START( node );
1927
1928	if ( __visit_children() ) {
1929	maybe_accept( node, &PointerType::dimension );
1930	maybe_accept( node, &PointerType::base );
1931	}
1932
1933	VISIT_END( Type, node );
1934	}
1935
1936	//--------------------------------------------------------------------------
1937	// ArrayType
1938	template< typename core_t >
1939	const ast::Type * ast::Pass< core_t >::visit( const ast::ArrayType * node ) {
1940	VISIT_START( node );
1941
1942	if ( __visit_children() ) {
1943	maybe_accept( node, &ArrayType::dimension );
1944	maybe_accept( node, &ArrayType::base );
1945	}
1946
1947	VISIT_END( Type, node );
1948	}
1949
1950	//--------------------------------------------------------------------------
1951	// ReferenceType
1952	template< typename core_t >
1953	const ast::Type * ast::Pass< core_t >::visit( const ast::ReferenceType * node ) {
1954	VISIT_START( node );
1955
1956	if ( __visit_children() ) {
1957	maybe_accept( node, &ReferenceType::base );
1958	}
1959
1960	VISIT_END( Type, node );
1961	}
1962
1963	//--------------------------------------------------------------------------
1964	// QualifiedType
1965	template< typename core_t >
1966	const ast::Type * ast::Pass< core_t >::visit( const ast::QualifiedType * node ) {
1967	VISIT_START( node );
1968
1969	if ( __visit_children() ) {
1970	maybe_accept( node, &QualifiedType::parent );
1971	maybe_accept( node, &QualifiedType::child );
1972	}
1973
1974	VISIT_END( Type, node );
1975	}
1976
1977	//--------------------------------------------------------------------------
1978	// FunctionType
1979	template< typename core_t >
1980	const ast::Type * ast::Pass< core_t >::visit( const ast::FunctionType * node ) {
1981	VISIT_START( node );
1982
1983	if ( __visit_children() ) {
1984	// guard_forall_subs forall_guard { *this, node };
1985	// mutate_forall( node );
1986	maybe_accept( node, &FunctionType::assertions );
1987	maybe_accept( node, &FunctionType::returns );
1988	maybe_accept( node, &FunctionType::params );
1989	}
1990
1991	VISIT_END( Type, node );
1992	}
1993
1994	//--------------------------------------------------------------------------
1995	// StructInstType
1996	template< typename core_t >
1997	const ast::Type * ast::Pass< core_t >::visit( const ast::StructInstType * node ) {
1998	VISIT_START( node );
1999
2000	__pass::symtab::addStruct( core, 0, node->name );
2001
2002	if ( __visit_children() ) {
2003	guard_symtab guard { *this };
2004	maybe_accept( node, &StructInstType::params );
2005	}
2006
2007	VISIT_END( Type, node );
2008	}
2009
2010	//--------------------------------------------------------------------------
2011	// UnionInstType
2012	template< typename core_t >
2013	const ast::Type * ast::Pass< core_t >::visit( const ast::UnionInstType * node ) {
2014	VISIT_START( node );
2015
2016	__pass::symtab::addUnion( core, 0, node->name );
2017
2018	if ( __visit_children() ) {
2019	guard_symtab guard { *this };
2020	maybe_accept( node, &UnionInstType::params );
2021	}
2022
2023	VISIT_END( Type, node );
2024	}
2025
2026	//--------------------------------------------------------------------------
2027	// EnumInstType
2028	template< typename core_t >
2029	const ast::Type * ast::Pass< core_t >::visit( const ast::EnumInstType * node ) {
2030	VISIT_START( node );
2031
2032	if ( __visit_children() ) {
2033	maybe_accept( node, &EnumInstType::params );
2034	}
2035
2036	VISIT_END( Type, node );
2037	}
2038
2039	//--------------------------------------------------------------------------
2040	// TraitInstType
2041	template< typename core_t >
2042	const ast::Type * ast::Pass< core_t >::visit( const ast::TraitInstType * node ) {
2043	VISIT_START( node );
2044
2045	if ( __visit_children() ) {
2046	maybe_accept( node, &TraitInstType::params );
2047	}
2048
2049	VISIT_END( Type, node );
2050	}
2051
2052	//--------------------------------------------------------------------------
2053	// TypeInstType
2054	template< typename core_t >
2055	const ast::Type * ast::Pass< core_t >::visit( const ast::TypeInstType * node ) {
2056	VISIT_START( node );
2057
2058	if ( __visit_children() ) {
2059	{
2060	maybe_accept( node, &TypeInstType::params );
2061	}
2062	// ensure that base re-bound if doing substitution
2063	__pass::forall::replace( core, 0, node );
2064	}
2065
2066	VISIT_END( Type, node );
2067	}
2068
2069	//--------------------------------------------------------------------------
2070	// TupleType
2071	template< typename core_t >
2072	const ast::Type * ast::Pass< core_t >::visit( const ast::TupleType * node ) {
2073	VISIT_START( node );
2074
2075	if ( __visit_children() ) {
2076	maybe_accept( node, &TupleType::types );
2077	}
2078
2079	VISIT_END( Type, node );
2080	}
2081
2082	//--------------------------------------------------------------------------
2083	// TypeofType
2084	template< typename core_t >
2085	const ast::Type * ast::Pass< core_t >::visit( const ast::TypeofType * node ) {
2086	VISIT_START( node );
2087
2088	if ( __visit_children() ) {
2089	maybe_accept( node, &TypeofType::expr );
2090	}
2091
2092	VISIT_END( Type, node );
2093	}
2094
2095	//--------------------------------------------------------------------------
2096	// VTableType
2097	template< typename core_t >
2098	const ast::Type * ast::Pass< core_t >::visit( const ast::VTableType * node ) {
2099	VISIT_START( node );
2100
2101	if ( __visit_children() ) {
2102	maybe_accept( node, &VTableType::base );
2103	}
2104
2105	VISIT_END( Type, node );
2106	}
2107
2108	//--------------------------------------------------------------------------
2109	// VarArgsType
2110	template< typename core_t >
2111	const ast::Type * ast::Pass< core_t >::visit( const ast::VarArgsType * node ) {
2112	VISIT_START( node );
2113
2114	VISIT_END( Type, node );
2115	}
2116
2117	//--------------------------------------------------------------------------
2118	// ZeroType
2119	template< typename core_t >
2120	const ast::Type * ast::Pass< core_t >::visit( const ast::ZeroType * node ) {
2121	VISIT_START( node );
2122
2123	VISIT_END( Type, node );
2124	}
2125
2126	//--------------------------------------------------------------------------
2127	// OneType
2128	template< typename core_t >
2129	const ast::Type * ast::Pass< core_t >::visit( const ast::OneType * node ) {
2130	VISIT_START( node );
2131
2132	VISIT_END( Type, node );
2133	}
2134
2135	//--------------------------------------------------------------------------
2136	// GlobalScopeType
2137	template< typename core_t >
2138	const ast::Type * ast::Pass< core_t >::visit( const ast::GlobalScopeType * node ) {
2139	VISIT_START( node );
2140
2141	VISIT_END( Type, node );
2142	}
2143
2144
2145	//--------------------------------------------------------------------------
2146	// Designation
2147	template< typename core_t >
2148	const ast::Designation * ast::Pass< core_t >::visit( const ast::Designation * node ) {
2149	VISIT_START( node );
2150
2151	if ( __visit_children() ) {
2152	maybe_accept( node, &Designation::designators );
2153	}
2154
2155	VISIT_END( Designation, node );
2156	}
2157
2158	//--------------------------------------------------------------------------
2159	// SingleInit
2160	template< typename core_t >
2161	const ast::Init * ast::Pass< core_t >::visit( const ast::SingleInit * node ) {
2162	VISIT_START( node );
2163
2164	if ( __visit_children() ) {
2165	maybe_accept_top( node, &SingleInit::value );
2166	}
2167
2168	VISIT_END( Init, node );
2169	}
2170
2171	//--------------------------------------------------------------------------
2172	// ListInit
2173	template< typename core_t >
2174	const ast::Init * ast::Pass< core_t >::visit( const ast::ListInit * node ) {
2175	VISIT_START( node );
2176
2177	if ( __visit_children() ) {
2178	maybe_accept( node, &ListInit::designations );
2179	maybe_accept( node, &ListInit::initializers );
2180	}
2181
2182	VISIT_END( Init, node );
2183	}
2184
2185	//--------------------------------------------------------------------------
2186	// ConstructorInit
2187	template< typename core_t >
2188	const ast::Init * ast::Pass< core_t >::visit( const ast::ConstructorInit * node ) {
2189	VISIT_START( node );
2190
2191	if ( __visit_children() ) {
2192	maybe_accept( node, &ConstructorInit::ctor );
2193	maybe_accept( node, &ConstructorInit::dtor );
2194	maybe_accept( node, &ConstructorInit::init );
2195	}
2196
2197	VISIT_END( Init, node );
2198	}
2199
2200	//--------------------------------------------------------------------------
2201	// Attribute
2202	template< typename core_t >
2203	const ast::Attribute * ast::Pass< core_t >::visit( const ast::Attribute * node ) {
2204	VISIT_START( node );
2205
2206	if ( __visit_children() ) {
2207	maybe_accept( node, &Attribute::params );
2208	}
2209
2210	VISIT_END( Attribute, node );
2211	}
2212
2213	//--------------------------------------------------------------------------
2214	// TypeSubstitution
2215	template< typename core_t >
2216	const ast::TypeSubstitution * ast::Pass< core_t >::visit( const ast::TypeSubstitution * node ) {
2217	VISIT_START( node );
2218
2219	if ( __visit_children() ) {
2220	bool mutated = false;
2221	ast::TypeSubstitution::TypeMap new_map;
2222	for ( const auto & p : node->typeMap ) {
2223	guard_symtab guard { *this };
2224	auto new_node = p.second->accept( *this );
2225	if (new_node != p.second) mutated = true;
2226	new_map.insert({ p.first, new_node });
2227	}
2228	if (mutated) {
2229	auto new_node = __pass::mutate<core_t>( node );
2230	new_node->typeMap.swap( new_map );
2231	node = new_node;
2232	}
2233	}
2234
2235	VISIT_END( TypeSubstitution, node );
2236	}
2237
2238	#undef VISIT_START
2239	#undef VISIT_END

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