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source: src/AST/Pass.impl.hpp @ 331ee52c

ADTast-experimental

Last change on this file since 331ee52c was d0bdb18, checked in by Andrew Beach <ajbeach@…>, 17 months ago
Removed extra scope calls in the new Pass. Added some documentation on the core's possible special members.
Property mode set to `100644`
File size: 65.1 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	// 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
25	#define VISIT_START( node ) \
26	using namespace ast; \
27	/* back-up the last known code location */ \
28	__attribute__((unused)) auto loc_guard = ast::__pass::make_location_guard( core, node, 0 ); \
29	/* back-up the visit children */ \
30	__attribute__((unused)) ast::__pass::visit_children_guard guard1( ast::__pass::visit_children(core, 0) ); \
31	/* setup the scope for passes that want to run code at exit */ \
32	__attribute__((unused)) ast::__pass::guard_value guard2( ast::__pass::at_cleanup (core, 0) ); \
33	/* begin tracing memory allocation if requested by this pass */ \
34	__pass::beginTrace( core, 0 ); \
35	/* call the implementation of the previsit of this pass */ \
36	__pass::previsit( core, node, 0 );
37
38	#define VISIT_END( type, node ) \
39	/* call the implementation of the postvisit of this pass */ \
40	auto __return = __pass::postvisit( core, node, 0 ); \
41	assertf(__return, "post visit should never return null"); \
42	/* end tracing memory allocation if requested by this pass */ \
43	__pass::endTrace( core, 0 ); \
44	return __return;
45
46	#ifdef PEDANTIC_PASS_ASSERT
47	#define __pedantic_pass_assert(...) assert (__VA_ARGS__)
48	#define __pedantic_pass_assertf(...) assertf(__VA_ARGS__)
49	#else
50	#define __pedantic_pass_assert(...)
51	#define __pedantic_pass_assertf(...)
52	#endif
53
54	namespace ast {
55	template<typename node_t>
56	node_t * shallowCopy( const node_t * node );
57
58	namespace __pass {
59	// Check if this is either a null pointer or a pointer to an empty container
60	template<typename T>
61	static inline bool empty( T * ptr ) {
62	return !ptr \|\| ptr->empty();
63	}
64
65	template< typename core_t, typename node_t >
66	static inline node_t* mutate(const node_t *node) {
67	return std::is_base_of<PureVisitor, core_t>::value ? ::ast::shallowCopy(node) : ::ast::mutate(node);
68	}
69
70	//------------------------------
71	template<typename it_t, template <class...> class container_t>
72	static inline void take_all( it_t it, container_t<ast::ptr<ast::Decl>> * decls, bool * mutated = nullptr ) {
73	if(empty(decls)) return;
74
75	std::transform(decls->begin(), decls->end(), it, [](const ast::Decl * decl) -> auto {
76	return new DeclStmt( decl->location, decl );
77	});
78	decls->clear();
79	if(mutated) *mutated = true;
80	}
81
82	template<typename it_t, template <class...> class container_t>
83	static inline void take_all( it_t it, container_t<ast::ptr<ast::Stmt>> * stmts, bool * mutated = nullptr ) {
84	if(empty(stmts)) return;
85
86	std::move(stmts->begin(), stmts->end(), it);
87	stmts->clear();
88	if(mutated) *mutated = true;
89	}
90
91	//------------------------------
92	/// Check if should be skipped, different for pointers and containers
93	template<typename node_t>
94	bool skip( const ast::ptr<node_t> & val) {
95	return !val;
96	}
97
98	template< template <class...> class container_t, typename node_t >
99	bool skip( const container_t<ast::ptr< node_t >> & val ) {
100	return val.empty();
101	}
102
103	//------------------------------
104	/// Get the value to visit, different for pointers and containers
105	template<typename node_t>
106	auto get( const ast::ptr<node_t> & val, int ) -> decltype(val.get()) {
107	return val.get();
108	}
109
110	template<typename node_t>
111	const node_t & get( const node_t & val, long) {
112	return val;
113	}
114
115	//------------------------------
116	/// Check if value was mutated, different for pointers and containers
117	template<typename lhs_t, typename rhs_t>
118	bool differs( const lhs_t * old_val, const rhs_t * new_val ) {
119	return old_val != new_val;
120	}
121
122	template< template <class...> class container_t, typename node_t >
123	bool differs( const container_t<ast::ptr< node_t >> &, const container_t<ast::ptr< node_t >> & new_val ) {
124	return !new_val.empty();
125	}
126	}
127
128	template< typename node_t >
129	template< typename object_t, typename super_t, typename field_t >
130	void __pass::result1< node_t >::apply( object_t * object, field_t super_t::* field ) {
131	object->*field = value;
132	}
133
134	template< typename core_t >
135	template< typename node_t >
136	auto ast::Pass< core_t >::call_accept( const node_t * node )
137	-> typename ast::Pass< core_t >::template generic_call_accept_result<node_t>::type
138	{
139	__pedantic_pass_assert( __visit_children() );
140	__pedantic_pass_assert( node );
141
142	static_assert( !std::is_base_of<ast::Expr, node_t>::value, "ERROR");
143	static_assert( !std::is_base_of<ast::Stmt, node_t>::value, "ERROR");
144
145	auto nval = node->accept( *this );
146	__pass::result1<
147	typename std::remove_pointer< decltype( node->accept(*this) ) >::type
148	> res;
149	res.differs = nval != node;
150	res.value = nval;
151	return res;
152	}
153
154	template< typename core_t >
155	__pass::template result1<ast::Expr> ast::Pass< core_t >::call_accept( const ast::Expr * expr ) {
156	__pedantic_pass_assert( __visit_children() );
157	__pedantic_pass_assert( expr );
158
159	auto nval = expr->accept( *this );
160	return { nval != expr, nval };
161	}
162
163	template< typename core_t >
164	__pass::template result1<ast::Stmt> ast::Pass< core_t >::call_accept( const ast::Stmt * stmt ) {
165	__pedantic_pass_assert( __visit_children() );
166	__pedantic_pass_assert( stmt );
167
168	const ast::Stmt * nval = stmt->accept( *this );
169	return { nval != stmt, nval };
170	}
171
172	template< typename core_t >
173	__pass::template result1<ast::Expr> ast::Pass< core_t >::call_accept_top( const ast::Expr * expr ) {
174	__pedantic_pass_assert( __visit_children() );
175	__pedantic_pass_assert( expr );
176
177	const ast::TypeSubstitution ** typeSubs_ptr = __pass::typeSubs( core, 0 );
178	if ( typeSubs_ptr && expr->env ) {
179	*typeSubs_ptr = expr->env;
180	}
181
182	auto nval = expr->accept( *this );
183	return { nval != expr, nval };
184	}
185
186	template< typename core_t >
187	__pass::template result1<ast::Stmt> ast::Pass< core_t >::call_accept_as_compound( const ast::Stmt * stmt ) {
188	__pedantic_pass_assert( __visit_children() );
189	__pedantic_pass_assert( stmt );
190
191	// add a few useful symbols to the scope
192	using __pass::empty;
193
194	// get the stmts/decls that will need to be spliced in
195	auto stmts_before = __pass::stmtsToAddBefore( core, 0 );
196	auto stmts_after = __pass::stmtsToAddAfter ( core, 0 );
197	auto decls_before = __pass::declsToAddBefore( core, 0 );
198	auto decls_after = __pass::declsToAddAfter ( core, 0 );
199
200	// These may be modified by subnode but most be restored once we exit this statemnet.
201	ValueGuardPtr< const ast::TypeSubstitution * > __old_env ( __pass::typeSubs( core, 0 ) );
202	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
203	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
204	ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
205	ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
206
207	// Now is the time to actually visit the node
208	const ast::Stmt * nstmt = stmt->accept( *this );
209
210	// If the pass doesn't want to add anything then we are done
211	if( empty(stmts_before) && empty(stmts_after) && empty(decls_before) && empty(decls_after) ) {
212	return { nstmt != stmt, nstmt };
213	}
214
215	// Make sure that it is either adding statements or declartions but not both
216	// this is because otherwise the order would be awkward to predict
217	assert(( empty( stmts_before ) && empty( stmts_after ))
218	\|\| ( empty( decls_before ) && empty( decls_after )) );
219
220	// Create a new Compound Statement to hold the new decls/stmts
221	ast::CompoundStmt * compound = new ast::CompoundStmt( stmt->location );
222
223	// Take all the declarations that go before
224	__pass::take_all( std::back_inserter( compound->kids ), decls_before );
225	__pass::take_all( std::back_inserter( compound->kids ), stmts_before );
226
227	// Insert the original declaration
228	compound->kids.emplace_back( nstmt );
229
230	// Insert all the declarations that go before
231	__pass::take_all( std::back_inserter( compound->kids ), decls_after );
232	__pass::take_all( std::back_inserter( compound->kids ), stmts_after );
233
234	return {true, compound};
235	}
236
237	template< template <class...> class container_t >
238	template< typename object_t, typename super_t, typename field_t >
239	void __pass::resultNstmt<container_t>::apply(object_t * object, field_t super_t::* field) {
240	auto & container = object->*field;
241	__pedantic_pass_assert( container.size() <= values.size() );
242
243	auto cit = enumerate(container).begin();
244
245	container_t<ptr<Stmt>> nvals;
246	for (delta & d : values) {
247	if ( d.is_old ) {
248	__pedantic_pass_assert( cit.idx <= d.old_idx );
249	std::advance( cit, d.old_idx - cit.idx );
250	nvals.push_back( std::move( (*cit).val) );
251	} else {
252	nvals.push_back( std::move(d.new_val) );
253	}
254	}
255
256	container = std::move(nvals);
257	}
258
259	template< template <class...> class container_t >
260	template< template <class...> class incontainer_t >
261	void __pass::resultNstmt< container_t >::take_all( incontainer_t<ptr<Stmt>> * stmts ) {
262	if (!stmts \|\| stmts->empty()) return;
263
264	std::transform(stmts->begin(), stmts->end(), std::back_inserter( values ),
265	[](ast::ptr<ast::Stmt>& stmt) -> delta {
266	return delta( stmt.release(), -1, false );
267	});
268	stmts->clear();
269	differs = true;
270	}
271
272	template< template<class...> class container_t >
273	template< template<class...> class incontainer_t >
274	void __pass::resultNstmt< container_t >::take_all( incontainer_t<ptr<Decl>> * decls ) {
275	if (!decls \|\| decls->empty()) return;
276
277	std::transform(decls->begin(), decls->end(), std::back_inserter( values ),
278	[](ast::ptr<ast::Decl>& decl) -> delta {
279	auto loc = decl->location;
280	auto stmt = new DeclStmt( loc, decl.release() );
281	return delta( stmt, -1, false );
282	});
283	decls->clear();
284	differs = true;
285	}
286
287	template< typename core_t >
288	template< template <class...> class container_t >
289	__pass::template resultNstmt<container_t> ast::Pass< core_t >::call_accept( const container_t< ptr<Stmt> > & statements ) {
290	__pedantic_pass_assert( __visit_children() );
291	if( statements.empty() ) return {};
292
293	// We are going to aggregate errors for all these statements
294	SemanticErrorException errors;
295
296	// add a few useful symbols to the scope
297	using __pass::empty;
298
299	// get the stmts/decls that will need to be spliced in
300	auto stmts_before = __pass::stmtsToAddBefore( core, 0 );
301	auto stmts_after = __pass::stmtsToAddAfter ( core, 0 );
302	auto decls_before = __pass::declsToAddBefore( core, 0 );
303	auto decls_after = __pass::declsToAddAfter ( core, 0 );
304
305	// These may be modified by subnode but most be restored once we exit this statemnet.
306	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
307	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
308	ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
309	ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
310
311	// update pass statitistics
312	pass_visitor_stats.depth++;
313	pass_visitor_stats.max->push(pass_visitor_stats.depth);
314	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
315
316	__pass::resultNstmt<container_t> new_kids;
317	for( auto value : enumerate( statements ) ) {
318	try {
319	size_t i = value.idx;
320	const Stmt * stmt = value.val;
321	__pedantic_pass_assert( stmt );
322	const ast::Stmt * new_stmt = stmt->accept( *this );
323	assert( new_stmt );
324	if(new_stmt != stmt ) { new_kids.differs = true; }
325
326	// Make sure that it is either adding statements or declartions but not both
327	// this is because otherwise the order would be awkward to predict
328	assert(( empty( stmts_before ) && empty( stmts_after ))
329	\|\| ( empty( decls_before ) && empty( decls_after )) );
330
331	// Take all the statements which should have gone after, N/A for first iteration
332	new_kids.take_all( decls_before );
333	new_kids.take_all( stmts_before );
334
335	// Now add the statement if there is one
336	if(new_stmt != stmt) {
337	new_kids.values.emplace_back( new_stmt, i, false );
338	} else {
339	new_kids.values.emplace_back( nullptr, i, true );
340	}
341
342	// Take all the declarations that go before
343	new_kids.take_all( decls_after );
344	new_kids.take_all( stmts_after );
345	}
346	catch ( SemanticErrorException &e ) {
347	errors.append( e );
348	}
349	}
350	pass_visitor_stats.depth--;
351	if ( !errors.isEmpty() ) { throw errors; }
352
353	return new_kids;
354	}
355
356	template< template <class...> class container_t, typename node_t >
357	template< typename object_t, typename super_t, typename field_t >
358	void __pass::resultN<container_t, node_t>::apply(object_t * object, field_t super_t::* field) {
359	auto & container = object->*field;
360	__pedantic_pass_assert( container.size() == values.size() );
361
362	for(size_t i = 0; i < container.size(); i++) {
363	// Take all the elements that are different in 'values'
364	// and swap them into 'container'
365	if( values[i] != nullptr ) swap(container[i], values[i]);
366	}
367
368	// Now the original containers should still have the unchanged values
369	// but also contain the new values
370	}
371
372	template< typename core_t >
373	template< template <class...> class container_t, typename node_t >
374	__pass::template resultN<container_t, node_t> ast::Pass< core_t >::call_accept( const container_t< ast::ptr<node_t> > & container ) {
375	__pedantic_pass_assert( __visit_children() );
376	if( container.empty() ) return {};
377	SemanticErrorException errors;
378
379	pass_visitor_stats.depth++;
380	pass_visitor_stats.max->push(pass_visitor_stats.depth);
381	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
382
383	bool mutated = false;
384	container_t<ptr<node_t>> new_kids;
385	for ( const node_t * node : container ) {
386	try {
387	__pedantic_pass_assert( node );
388	const node_t * new_stmt = strict_dynamic_cast< const node_t * >( node->accept( *this ) );
389	if(new_stmt != node ) {
390	mutated = true;
391	new_kids.emplace_back( new_stmt );
392	} else {
393	new_kids.emplace_back( nullptr );
394	}
395
396	}
397	catch( SemanticErrorException &e ) {
398	errors.append( e );
399	}
400	}
401
402	__pedantic_pass_assert( new_kids.size() == container.size() );
403	pass_visitor_stats.depth--;
404	if ( ! errors.isEmpty() ) { throw errors; }
405
406	return ast::__pass::resultN<container_t, node_t>{ mutated, new_kids };
407	}
408
409	template< typename core_t >
410	template<typename node_t, typename super_t, typename field_t>
411	void ast::Pass< core_t >::maybe_accept(
412	const node_t * & parent,
413	field_t super_t::*field
414	) {
415	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
416
417	if(__pass::skip(parent->*field)) return;
418	const auto & old_val = __pass::get(parent->*field, 0);
419
420	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
421
422	auto new_val = call_accept( old_val );
423
424	static_assert( !std::is_same<const ast::Node , decltype(new_val)>::value / \|\| std::is_same<int, decltype(old_val)>::value */, "ERROR");
425
426	if( new_val.differs ) {
427	auto new_parent = __pass::mutate<core_t>(parent);
428	new_val.apply(new_parent, field);
429	parent = new_parent;
430	}
431	}
432
433	template< typename core_t >
434	template<typename node_t, typename super_t, typename field_t>
435	void ast::Pass< core_t >::maybe_accept_top(
436	const node_t * & parent,
437	field_t super_t::*field
438	) {
439	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
440
441	if(__pass::skip(parent->*field)) return;
442	const auto & old_val = __pass::get(parent->*field, 0);
443
444	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
445
446	auto new_val = call_accept_top( old_val );
447
448	static_assert( !std::is_same<const ast::Node , decltype(new_val)>::value / \|\| std::is_same<int, decltype(old_val)>::value */, "ERROR");
449
450	if( new_val.differs ) {
451	auto new_parent = __pass::mutate<core_t>(parent);
452	new_val.apply(new_parent, field);
453	parent = new_parent;
454	}
455	}
456
457	template< typename core_t >
458	template<typename node_t, typename super_t, typename field_t>
459	void ast::Pass< core_t >::maybe_accept_as_compound(
460	const node_t * & parent,
461	field_t super_t::*child
462	) {
463	static_assert( std::is_base_of<super_t, node_t>::value, "Error deducing member object" );
464
465	if(__pass::skip(parent->*child)) return;
466	const auto & old_val = __pass::get(parent->*child, 0);
467
468	static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
469
470	auto new_val = call_accept_as_compound( old_val );
471
472	static_assert( !std::is_same<const ast::Node *, decltype(new_val)>::value \|\| std::is_same<int, decltype(old_val)>::value, "ERROR");
473
474	if( new_val.differs ) {
475	auto new_parent = __pass::mutate<core_t>(parent);
476	new_val.apply( new_parent, child );
477	parent = new_parent;
478	}
479	}
480
481	}
482
483	//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
484	//========================================================================================================================================================================
485	//========================================================================================================================================================================
486	//========================================================================================================================================================================
487	//========================================================================================================================================================================
488	//========================================================================================================================================================================
489	//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
490
491	template< typename core_t >
492	inline void ast::accept_all( std::list< ast::ptr<ast::Decl> > & decls, ast::Pass< core_t > & visitor ) {
493	// We are going to aggregate errors for all these statements
494	SemanticErrorException errors;
495
496	// add a few useful symbols to the scope
497	using __pass::empty;
498
499	// get the stmts/decls that will need to be spliced in
500	auto decls_before = __pass::declsToAddBefore( visitor.core, 0);
501	auto decls_after = __pass::declsToAddAfter ( visitor.core, 0);
502
503	// update pass statitistics
504	pass_visitor_stats.depth++;
505	pass_visitor_stats.max->push(pass_visitor_stats.depth);
506	pass_visitor_stats.avg->push(pass_visitor_stats.depth);
507
508	for ( std::list< ast::ptr<ast::Decl> >::iterator i = decls.begin(); ; ++i ) {
509	// splice in new declarations after previous decl
510	if ( !empty( decls_after ) ) { decls.splice( i, *decls_after ); }
511
512	if ( i == decls.end() ) break;
513
514	try {
515	// run visitor on declaration
516	ast::ptr<ast::Decl> & node = *i;
517	assert( node );
518	node = node->accept( visitor );
519	}
520	catch( SemanticErrorException &e ) {
521	if (__pass::on_error (visitor.core, *i, 0))
522	errors.append( e );
523	}
524
525	// splice in new declarations before current decl
526	if ( !empty( decls_before ) ) { decls.splice( i, *decls_before ); }
527	}
528	pass_visitor_stats.depth--;
529	if ( !errors.isEmpty() ) { throw errors; }
530	}
531
532	template< typename core_t >
533	inline void ast::accept_all( ast::TranslationUnit & unit, ast::Pass< core_t > & visitor ) {
534	if ( auto ptr = __pass::translation_unit::get_cptr( visitor.core, 0 ) ) {
535	ValueGuard<const TranslationUnit > guard( ptr );
536	*ptr = &unit;
537	return ast::accept_all( unit.decls, visitor );
538	} else {
539	return ast::accept_all( unit.decls, visitor );
540	}
541	}
542
543	// A NOTE ON THE ORDER OF TRAVERSAL
544	//
545	// Types and typedefs have their base types visited before they are added to the type table. This is ok, since there is
546	// no such thing as a recursive type or typedef.
547	//
548	// typedef struct { T *x; } T; // never allowed
549	//
550	// for structs/unions, it is possible to have recursion, so the decl should be added as if it's incomplete to begin, the
551	// members are traversed, and then the complete type should be added (assuming the type is completed by this particular
552	// declaration).
553	//
554	// struct T { struct T *x; }; // allowed
555	//
556	// It is important to add the complete type to the symbol table after the members/base has been traversed, since that
557	// traversal may modify the definition of the type and these modifications should be visible when the symbol table is
558	// queried later in this pass.
559
560	//--------------------------------------------------------------------------
561	// ObjectDecl
562	template< typename core_t >
563	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::ObjectDecl * node ) {
564	VISIT_START( node );
565
566	if ( __visit_children() ) {
567	{
568	guard_symtab guard { *this };
569	maybe_accept( node, &ObjectDecl::type );
570	}
571	maybe_accept( node, &ObjectDecl::init );
572	maybe_accept( node, &ObjectDecl::bitfieldWidth );
573	maybe_accept( node, &ObjectDecl::attributes );
574	}
575
576	__pass::symtab::addId( core, 0, node );
577
578	VISIT_END( DeclWithType, node );
579	}
580
581	//--------------------------------------------------------------------------
582	// FunctionDecl
583	template< typename core_t >
584	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::FunctionDecl * node ) {
585	VISIT_START( node );
586
587	__pass::symtab::addId( core, 0, node );
588
589	if ( __visit_children() ) {
590	maybe_accept( node, &FunctionDecl::withExprs );
591	}
592	{
593	// with clause introduces a level of scope (for the with expression members).
594	// with clause exprs are added to the symbol table before parameters so that parameters
595	// shadow with exprs and not the other way around.
596	guard_symtab guard { *this };
597	__pass::symtab::addWith( core, 0, node->withExprs, node );
598	{
599	guard_symtab guard { *this };
600	// implicit add __func__ identifier as specified in the C manual 6.4.2.2
601	// This is a C name and so has C linkage.
602	static ast::ptr< ast::ObjectDecl > func{ new ast::ObjectDecl{
603	CodeLocation{}, "__func__",
604	new ast::ArrayType{
605	new ast::BasicType{ ast::BasicType::Char, ast::CV::Const },
606	nullptr, VariableLen, DynamicDim
607	},
608	nullptr,
609	ast::Storage::Classes(),
610	ast::Linkage::C,
611	} };
612	__pass::symtab::addId( core, 0, func );
613	if ( __visit_children() ) {
614	maybe_accept( node, &FunctionDecl::type_params );
615	maybe_accept( node, &FunctionDecl::assertions );
616	maybe_accept( node, &FunctionDecl::params );
617	maybe_accept( node, &FunctionDecl::returns );
618	maybe_accept( node, &FunctionDecl::type );
619	maybe_accept( node, &FunctionDecl::attributes );
620	// First remember that we are now within a function.
621	ValueGuard< bool > oldInFunction( inFunction );
622	inFunction = true;
623	// The function body needs to have the same scope as parameters.
624	// A CompoundStmt will not enter a new scope if atFunctionTop is true.
625	ValueGuard< bool > oldAtFunctionTop( atFunctionTop );
626	atFunctionTop = true;
627	maybe_accept( node, &FunctionDecl::stmts );
628	}
629	}
630	}
631
632	VISIT_END( DeclWithType, node );
633	}
634
635	//--------------------------------------------------------------------------
636	// StructDecl
637	template< typename core_t >
638	const ast::Decl * ast::Pass< core_t >::visit( const ast::StructDecl * node ) {
639	VISIT_START( node );
640
641	// make up a forward declaration and add it before processing the members
642	// needs to be on the heap because addStruct saves the pointer
643	__pass::symtab::addStructFwd( core, 0, node );
644
645	if ( __visit_children() ) {
646	guard_symtab guard { * this };
647	maybe_accept( node, &StructDecl::params );
648	maybe_accept( node, &StructDecl::members );
649	maybe_accept( node, &StructDecl::attributes );
650	}
651
652	// this addition replaces the forward declaration
653	__pass::symtab::addStruct( core, 0, node );
654
655	VISIT_END( Decl, node );
656	}
657
658	//--------------------------------------------------------------------------
659	// UnionDecl
660	template< typename core_t >
661	const ast::Decl * ast::Pass< core_t >::visit( const ast::UnionDecl * node ) {
662	VISIT_START( node );
663
664	// make up a forward declaration and add it before processing the members
665	__pass::symtab::addUnionFwd( core, 0, node );
666
667	if ( __visit_children() ) {
668	guard_symtab guard { * this };
669	maybe_accept( node, &UnionDecl::params );
670	maybe_accept( node, &UnionDecl::members );
671	maybe_accept( node, &UnionDecl::attributes );
672	}
673
674	__pass::symtab::addUnion( core, 0, node );
675
676	VISIT_END( Decl, node );
677	}
678
679	//--------------------------------------------------------------------------
680	// EnumDecl
681	template< typename core_t >
682	const ast::Decl * ast::Pass< core_t >::visit( const ast::EnumDecl * node ) {
683	VISIT_START( node );
684
685	__pass::symtab::addEnum( core, 0, node );
686
687	if ( __visit_children() ) {
688	if ( node->hide == ast::EnumDecl::EnumHiding::Hide ) {
689	guard_symtab guard { *this };
690	maybe_accept( node, &EnumDecl::base );
691	maybe_accept( node, &EnumDecl::params );
692	maybe_accept( node, &EnumDecl::members );
693	maybe_accept( node, &EnumDecl::attributes );
694	} else {
695	maybe_accept( node, &EnumDecl::base );
696	maybe_accept( node, &EnumDecl::params );
697	maybe_accept( node, &EnumDecl::members );
698	maybe_accept( node, &EnumDecl::attributes );
699	}
700	}
701
702	VISIT_END( Decl, node );
703	}
704
705	//--------------------------------------------------------------------------
706	// TraitDecl
707	template< typename core_t >
708	const ast::Decl * ast::Pass< core_t >::visit( const ast::TraitDecl * node ) {
709	VISIT_START( node );
710
711	if ( __visit_children() ) {
712	guard_symtab guard { *this };
713	maybe_accept( node, &TraitDecl::params );
714	maybe_accept( node, &TraitDecl::members );
715	maybe_accept( node, &TraitDecl::attributes );
716	}
717
718	__pass::symtab::addTrait( core, 0, node );
719
720	VISIT_END( Decl, node );
721	}
722
723	//--------------------------------------------------------------------------
724	// TypeDecl
725	template< typename core_t >
726	const ast::Decl * ast::Pass< core_t >::visit( const ast::TypeDecl * node ) {
727	VISIT_START( node );
728
729	if ( __visit_children() ) {
730	guard_symtab guard { *this };
731	maybe_accept( node, &TypeDecl::base );
732	}
733
734	// see A NOTE ON THE ORDER OF TRAVERSAL, above
735	// note that assertions come after the type is added to the symtab, since they are not part of the type proper
736	// and may depend on the type itself
737	__pass::symtab::addType( core, 0, node );
738
739	if ( __visit_children() ) {
740	maybe_accept( node, &TypeDecl::assertions );
741
742	{
743	guard_symtab guard { *this };
744	maybe_accept( node, &TypeDecl::init );
745	}
746	}
747
748	VISIT_END( Decl, node );
749	}
750
751	//--------------------------------------------------------------------------
752	// TypedefDecl
753	template< typename core_t >
754	const ast::Decl * ast::Pass< core_t >::visit( const ast::TypedefDecl * node ) {
755	VISIT_START( node );
756
757	if ( __visit_children() ) {
758	guard_symtab guard { *this };
759	maybe_accept( node, &TypedefDecl::base );
760	}
761
762	__pass::symtab::addType( core, 0, node );
763
764	if ( __visit_children() ) {
765	maybe_accept( node, &TypedefDecl::assertions );
766	}
767
768	VISIT_END( Decl, node );
769	}
770
771	//--------------------------------------------------------------------------
772	// AsmDecl
773	template< typename core_t >
774	const ast::AsmDecl * ast::Pass< core_t >::visit( const ast::AsmDecl * node ) {
775	VISIT_START( node );
776
777	if ( __visit_children() ) {
778	maybe_accept( node, &AsmDecl::stmt );
779	}
780
781	VISIT_END( AsmDecl, node );
782	}
783
784	//--------------------------------------------------------------------------
785	// DirectiveDecl
786	template< typename core_t >
787	const ast::DirectiveDecl * ast::Pass< core_t >::visit( const ast::DirectiveDecl * node ) {
788	VISIT_START( node );
789
790	if ( __visit_children() ) {
791	maybe_accept( node, &DirectiveDecl::stmt );
792	}
793
794	VISIT_END( DirectiveDecl, node );
795	}
796
797	//--------------------------------------------------------------------------
798	// StaticAssertDecl
799	template< typename core_t >
800	const ast::StaticAssertDecl * ast::Pass< core_t >::visit( const ast::StaticAssertDecl * node ) {
801	VISIT_START( node );
802
803	if ( __visit_children() ) {
804	maybe_accept_top( node, &StaticAssertDecl::cond );
805	maybe_accept( node, &StaticAssertDecl::msg );
806	}
807
808	VISIT_END( StaticAssertDecl, node );
809	}
810
811	//--------------------------------------------------------------------------
812	// InlineMemberDecl
813	template< typename core_t >
814	const ast::DeclWithType * ast::Pass< core_t >::visit( const ast::InlineMemberDecl * node ) {
815	VISIT_START( node );
816
817	if ( __visit_children() ) {
818	{
819	guard_symtab guard { *this };
820	maybe_accept( node, &InlineMemberDecl::type );
821	}
822	}
823
824	VISIT_END( DeclWithType, node );
825	}
826
827	//--------------------------------------------------------------------------
828	// CompoundStmt
829	template< typename core_t >
830	const ast::CompoundStmt * ast::Pass< core_t >::visit( const ast::CompoundStmt * node ) {
831	VISIT_START( node );
832
833	if ( __visit_children() ) {
834	// Do not enter (or leave) a new scope if atFunctionTop. Remember to save the result.
835	auto guard1 = makeFuncGuard( [this, enterScope = !this->atFunctionTop]() {
836	if ( enterScope ) {
837	__pass::symtab::enter(core, 0);
838	}
839	}, [this, leaveScope = !this->atFunctionTop]() {
840	if ( leaveScope ) {
841	__pass::symtab::leave(core, 0);
842	}
843	});
844	ValueGuard< bool > guard2( atFunctionTop );
845	atFunctionTop = false;
846	guard_scope guard3 { *this };
847	maybe_accept( node, &CompoundStmt::kids );
848	}
849
850	VISIT_END( CompoundStmt, node );
851	}
852
853	//--------------------------------------------------------------------------
854	// ExprStmt
855	template< typename core_t >
856	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ExprStmt * node ) {
857	VISIT_START( node );
858
859	if ( __visit_children() ) {
860	maybe_accept_top( node, &ExprStmt::expr );
861	}
862
863	VISIT_END( Stmt, node );
864	}
865
866	//--------------------------------------------------------------------------
867	// AsmStmt
868	template< typename core_t >
869	const ast::Stmt * ast::Pass< core_t >::visit( const ast::AsmStmt * node ) {
870	VISIT_START( node )
871
872	if ( __visit_children() ) {
873	maybe_accept( node, &AsmStmt::instruction );
874	maybe_accept( node, &AsmStmt::output );
875	maybe_accept( node, &AsmStmt::input );
876	maybe_accept( node, &AsmStmt::clobber );
877	}
878
879	VISIT_END( Stmt, node );
880	}
881
882	//--------------------------------------------------------------------------
883	// DirectiveStmt
884	template< typename core_t >
885	const ast::Stmt * ast::Pass< core_t >::visit( const ast::DirectiveStmt * node ) {
886	VISIT_START( node )
887
888	VISIT_END( Stmt, node );
889	}
890
891	//--------------------------------------------------------------------------
892	// IfStmt
893	template< typename core_t >
894	const ast::Stmt * ast::Pass< core_t >::visit( const ast::IfStmt * node ) {
895	VISIT_START( node );
896
897	if ( __visit_children() ) {
898	// if statements introduce a level of scope (for the initialization)
899	guard_symtab guard { *this };
900	maybe_accept( node, &IfStmt::inits );
901	maybe_accept_top( node, &IfStmt::cond );
902	maybe_accept_as_compound( node, &IfStmt::then );
903	maybe_accept_as_compound( node, &IfStmt::else_ );
904	}
905
906	VISIT_END( Stmt, node );
907	}
908
909	//--------------------------------------------------------------------------
910	// WhileDoStmt
911	template< typename core_t >
912	const ast::Stmt * ast::Pass< core_t >::visit( const ast::WhileDoStmt * node ) {
913	VISIT_START( node );
914
915	if ( __visit_children() ) {
916	// while statements introduce a level of scope (for the initialization)
917	guard_symtab guard { *this };
918	maybe_accept( node, &WhileDoStmt::inits );
919	maybe_accept_top( node, &WhileDoStmt::cond );
920	maybe_accept_as_compound( node, &WhileDoStmt::body );
921	}
922
923	VISIT_END( Stmt, node );
924	}
925
926	//--------------------------------------------------------------------------
927	// ForStmt
928	template< typename core_t >
929	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ForStmt * node ) {
930	VISIT_START( node );
931
932	if ( __visit_children() ) {
933	// for statements introduce a level of scope (for the initialization)
934	guard_symtab guard { *this };
935	// xxx - old ast does not create WithStmtsToAdd scope for loop inits. should revisit this later.
936	maybe_accept( node, &ForStmt::inits );
937	maybe_accept_top( node, &ForStmt::cond );
938	maybe_accept_top( node, &ForStmt::inc );
939	maybe_accept_as_compound( node, &ForStmt::body );
940	}
941
942	VISIT_END( Stmt, node );
943	}
944
945	//--------------------------------------------------------------------------
946	// SwitchStmt
947	template< typename core_t >
948	const ast::Stmt * ast::Pass< core_t >::visit( const ast::SwitchStmt * node ) {
949	VISIT_START( node );
950
951	if ( __visit_children() ) {
952	maybe_accept_top( node, &SwitchStmt::cond );
953	maybe_accept( node, &SwitchStmt::cases );
954	}
955
956	VISIT_END( Stmt, node );
957	}
958
959	//--------------------------------------------------------------------------
960	// CaseClause
961	template< typename core_t >
962	const ast::CaseClause * ast::Pass< core_t >::visit( const ast::CaseClause * node ) {
963	VISIT_START( node );
964
965	if ( __visit_children() ) {
966	maybe_accept_top( node, &CaseClause::cond );
967	maybe_accept( node, &CaseClause::stmts );
968	}
969
970	VISIT_END( CaseClause, node );
971	}
972
973	//--------------------------------------------------------------------------
974	// BranchStmt
975	template< typename core_t >
976	const ast::Stmt * ast::Pass< core_t >::visit( const ast::BranchStmt * node ) {
977	VISIT_START( node );
978	VISIT_END( Stmt, node );
979	}
980
981	//--------------------------------------------------------------------------
982	// ReturnStmt
983	template< typename core_t >
984	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ReturnStmt * node ) {
985	VISIT_START( node );
986
987	if ( __visit_children() ) {
988	maybe_accept_top( node, &ReturnStmt::expr );
989	}
990
991	VISIT_END( Stmt, node );
992	}
993
994	//--------------------------------------------------------------------------
995	// ThrowStmt
996	template< typename core_t >
997	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ThrowStmt * node ) {
998	VISIT_START( node );
999
1000	if ( __visit_children() ) {
1001	maybe_accept( node, &ThrowStmt::expr );
1002	maybe_accept( node, &ThrowStmt::target );
1003	}
1004
1005	VISIT_END( Stmt, node );
1006	}
1007
1008	//--------------------------------------------------------------------------
1009	// TryStmt
1010	template< typename core_t >
1011	const ast::Stmt * ast::Pass< core_t >::visit( const ast::TryStmt * node ) {
1012	VISIT_START( node );
1013
1014	if ( __visit_children() ) {
1015	maybe_accept( node, &TryStmt::body );
1016	maybe_accept( node, &TryStmt::handlers );
1017	maybe_accept( node, &TryStmt::finally );
1018	}
1019
1020	VISIT_END( Stmt, node );
1021	}
1022
1023	//--------------------------------------------------------------------------
1024	// CatchClause
1025	template< typename core_t >
1026	const ast::CatchClause * ast::Pass< core_t >::visit( const ast::CatchClause * node ) {
1027	VISIT_START( node );
1028
1029	if ( __visit_children() ) {
1030	// catch statements introduce a level of scope (for the caught exception)
1031	guard_symtab guard { *this };
1032	maybe_accept( node, &CatchClause::decl );
1033	maybe_accept_top( node, &CatchClause::cond );
1034	maybe_accept_as_compound( node, &CatchClause::body );
1035	}
1036
1037	VISIT_END( CatchClause, node );
1038	}
1039
1040	//--------------------------------------------------------------------------
1041	// FinallyClause
1042	template< typename core_t >
1043	const ast::FinallyClause * ast::Pass< core_t >::visit( const ast::FinallyClause * node ) {
1044	VISIT_START( node );
1045
1046	if ( __visit_children() ) {
1047	maybe_accept( node, &FinallyClause::body );
1048	}
1049
1050	VISIT_END( FinallyClause, node );
1051	}
1052
1053	//--------------------------------------------------------------------------
1054	// FinallyStmt
1055	template< typename core_t >
1056	const ast::Stmt * ast::Pass< core_t >::visit( const ast::SuspendStmt * node ) {
1057	VISIT_START( node );
1058
1059	if ( __visit_children() ) {
1060	maybe_accept( node, &SuspendStmt::then );
1061	}
1062
1063	VISIT_END( Stmt, node );
1064	}
1065
1066	//--------------------------------------------------------------------------
1067	// WaitForStmt
1068	template< typename core_t >
1069	const ast::Stmt * ast::Pass< core_t >::visit( const ast::WaitForStmt * node ) {
1070	VISIT_START( node );
1071
1072	if ( __visit_children() ) {
1073	maybe_accept( node, &WaitForStmt::clauses );
1074	maybe_accept( node, &WaitForStmt::timeout_time );
1075	maybe_accept( node, &WaitForStmt::timeout_stmt );
1076	maybe_accept( node, &WaitForStmt::timeout_cond );
1077	maybe_accept( node, &WaitForStmt::else_stmt );
1078	maybe_accept( node, &WaitForStmt::else_cond );
1079	}
1080
1081	VISIT_END( Stmt, node );
1082	}
1083
1084	//--------------------------------------------------------------------------
1085	// WaitForClause
1086	template< typename core_t >
1087	const ast::WaitForClause * ast::Pass< core_t >::visit( const ast::WaitForClause * node ) {
1088	VISIT_START( node );
1089
1090	if ( __visit_children() ) {
1091	maybe_accept( node, &WaitForClause::target_func );
1092	maybe_accept( node, &WaitForClause::target_args );
1093	maybe_accept( node, &WaitForClause::stmt );
1094	maybe_accept( node, &WaitForClause::cond );
1095	}
1096
1097	VISIT_END( WaitForClause, node );
1098	}
1099
1100	//--------------------------------------------------------------------------
1101	// WithStmt
1102	template< typename core_t >
1103	const ast::Decl * ast::Pass< core_t >::visit( const ast::WithStmt * node ) {
1104	VISIT_START( node );
1105
1106	if ( __visit_children() ) {
1107	maybe_accept( node, &WithStmt::exprs );
1108	{
1109	// catch statements introduce a level of scope (for the caught exception)
1110	guard_symtab guard { *this };
1111	__pass::symtab::addWith( core, 0, node->exprs, node );
1112	maybe_accept( node, &WithStmt::stmt );
1113	}
1114	}
1115
1116	VISIT_END( Stmt, node );
1117	}
1118
1119	//--------------------------------------------------------------------------
1120	// NullStmt
1121	template< typename core_t >
1122	const ast::NullStmt * ast::Pass< core_t >::visit( const ast::NullStmt * node ) {
1123	VISIT_START( node );
1124	VISIT_END( NullStmt, node );
1125	}
1126
1127	//--------------------------------------------------------------------------
1128	// DeclStmt
1129	template< typename core_t >
1130	const ast::Stmt * ast::Pass< core_t >::visit( const ast::DeclStmt * node ) {
1131	VISIT_START( node );
1132
1133	if ( __visit_children() ) {
1134	maybe_accept( node, &DeclStmt::decl );
1135	}
1136
1137	VISIT_END( Stmt, node );
1138	}
1139
1140	//--------------------------------------------------------------------------
1141	// ImplicitCtorDtorStmt
1142	template< typename core_t >
1143	const ast::Stmt * ast::Pass< core_t >::visit( const ast::ImplicitCtorDtorStmt * node ) {
1144	VISIT_START( node );
1145
1146	// For now this isn't visited, it is unclear if this causes problem
1147	// if all tests are known to pass, remove this code
1148	if ( __visit_children() ) {
1149	maybe_accept( node, &ImplicitCtorDtorStmt::callStmt );
1150	}
1151
1152	VISIT_END( Stmt, node );
1153	}
1154
1155	//--------------------------------------------------------------------------
1156	// MutexStmt
1157	template< typename core_t >
1158	const ast::Stmt * ast::Pass< core_t >::visit( const ast::MutexStmt * node ) {
1159	VISIT_START( node );
1160
1161	if ( __visit_children() ) {
1162	// mutex statements introduce a level of scope (for the initialization)
1163	guard_symtab guard { *this };
1164	maybe_accept( node, &MutexStmt::stmt );
1165	maybe_accept( node, &MutexStmt::mutexObjs );
1166	}
1167
1168	VISIT_END( Stmt, node );
1169	}
1170
1171	//--------------------------------------------------------------------------
1172	// ApplicationExpr
1173	template< typename core_t >
1174	const ast::Expr * ast::Pass< core_t >::visit( const ast::ApplicationExpr * node ) {
1175	VISIT_START( node );
1176
1177	if ( __visit_children() ) {
1178	{
1179	guard_symtab guard { *this };
1180	maybe_accept( node, &ApplicationExpr::result );
1181	}
1182	maybe_accept( node, &ApplicationExpr::func );
1183	maybe_accept( node, &ApplicationExpr::args );
1184	}
1185
1186	VISIT_END( Expr, node );
1187	}
1188
1189	//--------------------------------------------------------------------------
1190	// UntypedExpr
1191	template< typename core_t >
1192	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedExpr * node ) {
1193	VISIT_START( node );
1194
1195	if ( __visit_children() ) {
1196	{
1197	guard_symtab guard { *this };
1198	maybe_accept( node, &UntypedExpr::result );
1199	}
1200
1201	maybe_accept( node, &UntypedExpr::args );
1202	}
1203
1204	VISIT_END( Expr, node );
1205	}
1206
1207	//--------------------------------------------------------------------------
1208	// NameExpr
1209	template< typename core_t >
1210	const ast::Expr * ast::Pass< core_t >::visit( const ast::NameExpr * node ) {
1211	VISIT_START( node );
1212
1213	if ( __visit_children() ) {
1214	guard_symtab guard { *this };
1215	maybe_accept( node, &NameExpr::result );
1216	}
1217
1218	VISIT_END( Expr, node );
1219	}
1220
1221	//--------------------------------------------------------------------------
1222	// QualifiedNameExpr
1223	template< typename core_t >
1224	const ast::Expr * ast::Pass< core_t >::visit( const ast::QualifiedNameExpr * node ) {
1225	VISIT_START( node );
1226	if ( __visit_children() ) {
1227	guard_symtab guard { *this };
1228	maybe_accept( node, &QualifiedNameExpr::type_decl );
1229	}
1230	VISIT_END( Expr, node );
1231	}
1232
1233	//--------------------------------------------------------------------------
1234	// CastExpr
1235	template< typename core_t >
1236	const ast::Expr * ast::Pass< core_t >::visit( const ast::CastExpr * node ) {
1237	VISIT_START( node );
1238
1239	if ( __visit_children() ) {
1240	{
1241	guard_symtab guard { *this };
1242	maybe_accept( node, &CastExpr::result );
1243	}
1244	maybe_accept( node, &CastExpr::arg );
1245	}
1246
1247	VISIT_END( Expr, node );
1248	}
1249
1250	//--------------------------------------------------------------------------
1251	// KeywordCastExpr
1252	template< typename core_t >
1253	const ast::Expr * ast::Pass< core_t >::visit( const ast::KeywordCastExpr * node ) {
1254	VISIT_START( node );
1255
1256	if ( __visit_children() ) {
1257	{
1258	guard_symtab guard { *this };
1259	maybe_accept( node, &KeywordCastExpr::result );
1260	}
1261	maybe_accept( node, &KeywordCastExpr::arg );
1262	}
1263
1264	VISIT_END( Expr, node );
1265	}
1266
1267	//--------------------------------------------------------------------------
1268	// VirtualCastExpr
1269	template< typename core_t >
1270	const ast::Expr * ast::Pass< core_t >::visit( const ast::VirtualCastExpr * node ) {
1271	VISIT_START( node );
1272
1273	if ( __visit_children() ) {
1274	{
1275	guard_symtab guard { *this };
1276	maybe_accept( node, &VirtualCastExpr::result );
1277	}
1278	maybe_accept( node, &VirtualCastExpr::arg );
1279	}
1280
1281	VISIT_END( Expr, node );
1282	}
1283
1284	//--------------------------------------------------------------------------
1285	// AddressExpr
1286	template< typename core_t >
1287	const ast::Expr * ast::Pass< core_t >::visit( const ast::AddressExpr * node ) {
1288	VISIT_START( node );
1289
1290	if ( __visit_children() ) {
1291	{
1292	guard_symtab guard { *this };
1293	maybe_accept( node, &AddressExpr::result );
1294	}
1295	maybe_accept( node, &AddressExpr::arg );
1296	}
1297
1298	VISIT_END( Expr, node );
1299	}
1300
1301	//--------------------------------------------------------------------------
1302	// LabelAddressExpr
1303	template< typename core_t >
1304	const ast::Expr * ast::Pass< core_t >::visit( const ast::LabelAddressExpr * node ) {
1305	VISIT_START( node );
1306
1307	if ( __visit_children() ) {
1308	guard_symtab guard { *this };
1309	maybe_accept( node, &LabelAddressExpr::result );
1310	}
1311
1312	VISIT_END( Expr, node );
1313	}
1314
1315	//--------------------------------------------------------------------------
1316	// UntypedMemberExpr
1317	template< typename core_t >
1318	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedMemberExpr * node ) {
1319	VISIT_START( node );
1320
1321	if ( __visit_children() ) {
1322	{
1323	guard_symtab guard { *this };
1324	maybe_accept( node, &UntypedMemberExpr::result );
1325	}
1326	maybe_accept( node, &UntypedMemberExpr::aggregate );
1327	maybe_accept( node, &UntypedMemberExpr::member );
1328	}
1329
1330	VISIT_END( Expr, node );
1331	}
1332
1333	//--------------------------------------------------------------------------
1334	// MemberExpr
1335	template< typename core_t >
1336	const ast::Expr * ast::Pass< core_t >::visit( const ast::MemberExpr * node ) {
1337	VISIT_START( node );
1338
1339	if ( __visit_children() ) {
1340	{
1341	guard_symtab guard { *this };
1342	maybe_accept( node, &MemberExpr::result );
1343	}
1344	maybe_accept( node, &MemberExpr::aggregate );
1345	}
1346
1347	VISIT_END( Expr, node );
1348	}
1349
1350	//--------------------------------------------------------------------------
1351	// VariableExpr
1352	template< typename core_t >
1353	const ast::Expr * ast::Pass< core_t >::visit( const ast::VariableExpr * node ) {
1354	VISIT_START( node );
1355
1356	if ( __visit_children() ) {
1357	guard_symtab guard { *this };
1358	maybe_accept( node, &VariableExpr::result );
1359	}
1360
1361	VISIT_END( Expr, node );
1362	}
1363
1364	//--------------------------------------------------------------------------
1365	// ConstantExpr
1366	template< typename core_t >
1367	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConstantExpr * node ) {
1368	VISIT_START( node );
1369
1370	if ( __visit_children() ) {
1371	guard_symtab guard { *this };
1372	maybe_accept( node, &ConstantExpr::result );
1373	}
1374
1375	VISIT_END( Expr, node );
1376	}
1377
1378	//--------------------------------------------------------------------------
1379	// SizeofExpr
1380	template< typename core_t >
1381	const ast::Expr * ast::Pass< core_t >::visit( const ast::SizeofExpr * node ) {
1382	VISIT_START( node );
1383
1384	if ( __visit_children() ) {
1385	{
1386	guard_symtab guard { *this };
1387	maybe_accept( node, &SizeofExpr::result );
1388	}
1389	if ( node->type ) {
1390	maybe_accept( node, &SizeofExpr::type );
1391	} else {
1392	maybe_accept( node, &SizeofExpr::expr );
1393	}
1394	}
1395
1396	VISIT_END( Expr, node );
1397	}
1398
1399	//--------------------------------------------------------------------------
1400	// AlignofExpr
1401	template< typename core_t >
1402	const ast::Expr * ast::Pass< core_t >::visit( const ast::AlignofExpr * node ) {
1403	VISIT_START( node );
1404
1405	if ( __visit_children() ) {
1406	{
1407	guard_symtab guard { *this };
1408	maybe_accept( node, &AlignofExpr::result );
1409	}
1410	if ( node->type ) {
1411	maybe_accept( node, &AlignofExpr::type );
1412	} else {
1413	maybe_accept( node, &AlignofExpr::expr );
1414	}
1415	}
1416
1417	VISIT_END( Expr, node );
1418	}
1419
1420	//--------------------------------------------------------------------------
1421	// UntypedOffsetofExpr
1422	template< typename core_t >
1423	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedOffsetofExpr * node ) {
1424	VISIT_START( node );
1425
1426	if ( __visit_children() ) {
1427	{
1428	guard_symtab guard { *this };
1429	maybe_accept( node, &UntypedOffsetofExpr::result );
1430	}
1431	maybe_accept( node, &UntypedOffsetofExpr::type );
1432	}
1433
1434	VISIT_END( Expr, node );
1435	}
1436
1437	//--------------------------------------------------------------------------
1438	// OffsetofExpr
1439	template< typename core_t >
1440	const ast::Expr * ast::Pass< core_t >::visit( const ast::OffsetofExpr * node ) {
1441	VISIT_START( node );
1442
1443	if ( __visit_children() ) {
1444	{
1445	guard_symtab guard { *this };
1446	maybe_accept( node, &OffsetofExpr::result );
1447	}
1448	maybe_accept( node, &OffsetofExpr::type );
1449	}
1450
1451	VISIT_END( Expr, node );
1452	}
1453
1454	//--------------------------------------------------------------------------
1455	// OffsetPackExpr
1456	template< typename core_t >
1457	const ast::Expr * ast::Pass< core_t >::visit( const ast::OffsetPackExpr * node ) {
1458	VISIT_START( node );
1459
1460	if ( __visit_children() ) {
1461	{
1462	guard_symtab guard { *this };
1463	maybe_accept( node, &OffsetPackExpr::result );
1464	}
1465	maybe_accept( node, &OffsetPackExpr::type );
1466	}
1467
1468	VISIT_END( Expr, node );
1469	}
1470
1471	//--------------------------------------------------------------------------
1472	// LogicalExpr
1473	template< typename core_t >
1474	const ast::Expr * ast::Pass< core_t >::visit( const ast::LogicalExpr * node ) {
1475	VISIT_START( node );
1476
1477	if ( __visit_children() ) {
1478	{
1479	guard_symtab guard { *this };
1480	maybe_accept( node, &LogicalExpr::result );
1481	}
1482	maybe_accept( node, &LogicalExpr::arg1 );
1483	maybe_accept( node, &LogicalExpr::arg2 );
1484	}
1485
1486	VISIT_END( Expr, node );
1487	}
1488
1489	//--------------------------------------------------------------------------
1490	// ConditionalExpr
1491	template< typename core_t >
1492	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConditionalExpr * node ) {
1493	VISIT_START( node );
1494
1495	if ( __visit_children() ) {
1496	{
1497	guard_symtab guard { *this };
1498	maybe_accept( node, &ConditionalExpr::result );
1499	}
1500	maybe_accept( node, &ConditionalExpr::arg1 );
1501	maybe_accept( node, &ConditionalExpr::arg2 );
1502	maybe_accept( node, &ConditionalExpr::arg3 );
1503	}
1504
1505	VISIT_END( Expr, node );
1506	}
1507
1508	//--------------------------------------------------------------------------
1509	// CommaExpr
1510	template< typename core_t >
1511	const ast::Expr * ast::Pass< core_t >::visit( const ast::CommaExpr * node ) {
1512	VISIT_START( node );
1513
1514	if ( __visit_children() ) {
1515	{
1516	guard_symtab guard { *this };
1517	maybe_accept( node, &CommaExpr::result );
1518	}
1519	maybe_accept( node, &CommaExpr::arg1 );
1520	maybe_accept( node, &CommaExpr::arg2 );
1521	}
1522
1523	VISIT_END( Expr, node );
1524	}
1525
1526	//--------------------------------------------------------------------------
1527	// TypeExpr
1528	template< typename core_t >
1529	const ast::Expr * ast::Pass< core_t >::visit( const ast::TypeExpr * node ) {
1530	VISIT_START( node );
1531
1532	if ( __visit_children() ) {
1533	{
1534	guard_symtab guard { *this };
1535	maybe_accept( node, &TypeExpr::result );
1536	}
1537	maybe_accept( node, &TypeExpr::type );
1538	}
1539
1540	VISIT_END( Expr, node );
1541	}
1542
1543	//--------------------------------------------------------------------------
1544	// DimensionExpr
1545	template< typename core_t >
1546	const ast::Expr * ast::Pass< core_t >::visit( const ast::DimensionExpr * node ) {
1547	VISIT_START( node );
1548
1549	if ( __visit_children() ) {
1550	guard_symtab guard { *this };
1551	maybe_accept( node, &DimensionExpr::result );
1552	}
1553
1554	VISIT_END( Expr, node );
1555	}
1556
1557	//--------------------------------------------------------------------------
1558	// AsmExpr
1559	template< typename core_t >
1560	const ast::Expr * ast::Pass< core_t >::visit( const ast::AsmExpr * node ) {
1561	VISIT_START( node );
1562
1563	if ( __visit_children() ) {
1564	{
1565	guard_symtab guard { *this };
1566	maybe_accept( node, &AsmExpr::result );
1567	}
1568	maybe_accept( node, &AsmExpr::constraint );
1569	maybe_accept( node, &AsmExpr::operand );
1570	}
1571
1572	VISIT_END( Expr, node );
1573	}
1574
1575	//--------------------------------------------------------------------------
1576	// ImplicitCopyCtorExpr
1577	template< typename core_t >
1578	const ast::Expr * ast::Pass< core_t >::visit( const ast::ImplicitCopyCtorExpr * node ) {
1579	VISIT_START( node );
1580
1581	if ( __visit_children() ) {
1582	{
1583	guard_symtab guard { *this };
1584	maybe_accept( node, &ImplicitCopyCtorExpr::result );
1585	}
1586	maybe_accept( node, &ImplicitCopyCtorExpr::callExpr );
1587	}
1588
1589	VISIT_END( Expr, node );
1590	}
1591
1592	//--------------------------------------------------------------------------
1593	// ConstructorExpr
1594	template< typename core_t >
1595	const ast::Expr * ast::Pass< core_t >::visit( const ast::ConstructorExpr * node ) {
1596	VISIT_START( node );
1597
1598	if ( __visit_children() ) {
1599	{
1600	guard_symtab guard { *this };
1601	maybe_accept( node, &ConstructorExpr::result );
1602	}
1603	maybe_accept( node, &ConstructorExpr::callExpr );
1604	}
1605
1606	VISIT_END( Expr, node );
1607	}
1608
1609	//--------------------------------------------------------------------------
1610	// CompoundLiteralExpr
1611	template< typename core_t >
1612	const ast::Expr * ast::Pass< core_t >::visit( const ast::CompoundLiteralExpr * node ) {
1613	VISIT_START( node );
1614
1615	if ( __visit_children() ) {
1616	{
1617	guard_symtab guard { *this };
1618	maybe_accept( node, &CompoundLiteralExpr::result );
1619	}
1620	maybe_accept( node, &CompoundLiteralExpr::init );
1621	}
1622
1623	VISIT_END( Expr, node );
1624	}
1625
1626	//--------------------------------------------------------------------------
1627	// RangeExpr
1628	template< typename core_t >
1629	const ast::Expr * ast::Pass< core_t >::visit( const ast::RangeExpr * node ) {
1630	VISIT_START( node );
1631
1632	if ( __visit_children() ) {
1633	{
1634	guard_symtab guard { *this };
1635	maybe_accept( node, &RangeExpr::result );
1636	}
1637	maybe_accept( node, &RangeExpr::low );
1638	maybe_accept( node, &RangeExpr::high );
1639	}
1640
1641	VISIT_END( Expr, node );
1642	}
1643
1644	//--------------------------------------------------------------------------
1645	// UntypedTupleExpr
1646	template< typename core_t >
1647	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedTupleExpr * node ) {
1648	VISIT_START( node );
1649
1650	if ( __visit_children() ) {
1651	{
1652	guard_symtab guard { *this };
1653	maybe_accept( node, &UntypedTupleExpr::result );
1654	}
1655	maybe_accept( node, &UntypedTupleExpr::exprs );
1656	}
1657
1658	VISIT_END( Expr, node );
1659	}
1660
1661	//--------------------------------------------------------------------------
1662	// TupleExpr
1663	template< typename core_t >
1664	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleExpr * node ) {
1665	VISIT_START( node );
1666
1667	if ( __visit_children() ) {
1668	{
1669	guard_symtab guard { *this };
1670	maybe_accept( node, &TupleExpr::result );
1671	}
1672	maybe_accept( node, &TupleExpr::exprs );
1673	}
1674
1675	VISIT_END( Expr, node );
1676	}
1677
1678	//--------------------------------------------------------------------------
1679	// TupleIndexExpr
1680	template< typename core_t >
1681	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleIndexExpr * node ) {
1682	VISIT_START( node );
1683
1684	if ( __visit_children() ) {
1685	{
1686	guard_symtab guard { *this };
1687	maybe_accept( node, &TupleIndexExpr::result );
1688	}
1689	maybe_accept( node, &TupleIndexExpr::tuple );
1690	}
1691
1692	VISIT_END( Expr, node );
1693	}
1694
1695	//--------------------------------------------------------------------------
1696	// TupleAssignExpr
1697	template< typename core_t >
1698	const ast::Expr * ast::Pass< core_t >::visit( const ast::TupleAssignExpr * node ) {
1699	VISIT_START( node );
1700
1701	if ( __visit_children() ) {
1702	{
1703	guard_symtab guard { *this };
1704	maybe_accept( node, &TupleAssignExpr::result );
1705	}
1706	maybe_accept( node, &TupleAssignExpr::stmtExpr );
1707	}
1708
1709	VISIT_END( Expr, node );
1710	}
1711
1712	//--------------------------------------------------------------------------
1713	// StmtExpr
1714	template< typename core_t >
1715	const ast::Expr * ast::Pass< core_t >::visit( const ast::StmtExpr * node ) {
1716	VISIT_START( node );
1717
1718	if ( __visit_children() ) {
1719	// don't want statements from outer CompoundStmts to be added to this StmtExpr
1720	// get the stmts that will need to be spliced in
1721	auto stmts_before = __pass::stmtsToAddBefore( core, 0);
1722	auto stmts_after = __pass::stmtsToAddAfter ( core, 0);
1723
1724	// These may be modified by subnode but most be restored once we exit this statemnet.
1725	ValueGuardPtr< const ast::TypeSubstitution * > __old_env( __pass::typeSubs( core, 0 ) );
1726	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
1727	ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
1728
1729	{
1730	guard_symtab guard { *this };
1731	maybe_accept( node, &StmtExpr::result );
1732	}
1733	maybe_accept( node, &StmtExpr::stmts );
1734	maybe_accept( node, &StmtExpr::returnDecls );
1735	maybe_accept( node, &StmtExpr::dtors );
1736	}
1737
1738	VISIT_END( Expr, node );
1739	}
1740
1741	//--------------------------------------------------------------------------
1742	// UniqueExpr
1743	template< typename core_t >
1744	const ast::Expr * ast::Pass< core_t >::visit( const ast::UniqueExpr * node ) {
1745	VISIT_START( node );
1746
1747	if ( __visit_children() ) {
1748	{
1749	guard_symtab guard { *this };
1750	maybe_accept( node, &UniqueExpr::result );
1751	}
1752	maybe_accept( node, &UniqueExpr::expr );
1753	}
1754
1755	VISIT_END( Expr, node );
1756	}
1757
1758	//--------------------------------------------------------------------------
1759	// UntypedInitExpr
1760	template< typename core_t >
1761	const ast::Expr * ast::Pass< core_t >::visit( const ast::UntypedInitExpr * node ) {
1762	VISIT_START( node );
1763
1764	if ( __visit_children() ) {
1765	{
1766	guard_symtab guard { *this };
1767	maybe_accept( node, &UntypedInitExpr::result );
1768	}
1769	maybe_accept( node, &UntypedInitExpr::expr );
1770	// not currently visiting initAlts, but this doesn't matter since this node is only used in the resolver.
1771	}
1772
1773	VISIT_END( Expr, node );
1774	}
1775
1776	//--------------------------------------------------------------------------
1777	// InitExpr
1778	template< typename core_t >
1779	const ast::Expr * ast::Pass< core_t >::visit( const ast::InitExpr * node ) {
1780	VISIT_START( node );
1781
1782	if ( __visit_children() ) {
1783	{
1784	guard_symtab guard { *this };
1785	maybe_accept( node, &InitExpr::result );
1786	}
1787	maybe_accept( node, &InitExpr::expr );
1788	maybe_accept( node, &InitExpr::designation );
1789	}
1790
1791	VISIT_END( Expr, node );
1792	}
1793
1794	//--------------------------------------------------------------------------
1795	// DeletedExpr
1796	template< typename core_t >
1797	const ast::Expr * ast::Pass< core_t >::visit( const ast::DeletedExpr * node ) {
1798	VISIT_START( node );
1799
1800	if ( __visit_children() ) {
1801	{
1802	guard_symtab guard { *this };
1803	maybe_accept( node, &DeletedExpr::result );
1804	}
1805	maybe_accept( node, &DeletedExpr::expr );
1806	// don't visit deleteStmt, because it is a pointer to somewhere else in the tree.
1807	}
1808
1809	VISIT_END( Expr, node );
1810	}
1811
1812	//--------------------------------------------------------------------------
1813	// DefaultArgExpr
1814	template< typename core_t >
1815	const ast::Expr * ast::Pass< core_t >::visit( const ast::DefaultArgExpr * node ) {
1816	VISIT_START( node );
1817
1818	if ( __visit_children() ) {
1819	{
1820	guard_symtab guard { *this };
1821	maybe_accept( node, &DefaultArgExpr::result );
1822	}
1823	maybe_accept( node, &DefaultArgExpr::expr );
1824	}
1825
1826	VISIT_END( Expr, node );
1827	}
1828
1829	//--------------------------------------------------------------------------
1830	// GenericExpr
1831	template< typename core_t >
1832	const ast::Expr * ast::Pass< core_t >::visit( const ast::GenericExpr * node ) {
1833	VISIT_START( node );
1834
1835	if ( __visit_children() ) {
1836	{
1837	guard_symtab guard { *this };
1838	maybe_accept( node, &GenericExpr::result );
1839	}
1840	maybe_accept( node, &GenericExpr::control );
1841
1842	std::vector<GenericExpr::Association> new_kids;
1843	new_kids.reserve(node->associations.size());
1844	bool mutated = false;
1845	for( const auto & assoc : node->associations ) {
1846	const Type * type = nullptr;
1847	if( assoc.type ) {
1848	guard_symtab guard { *this };
1849	type = assoc.type->accept( *this );
1850	if( type != assoc.type ) mutated = true;
1851	}
1852	const Expr * expr = nullptr;
1853	if( assoc.expr ) {
1854	expr = assoc.expr->accept( *this );
1855	if( expr != assoc.expr ) mutated = true;
1856	}
1857	new_kids.emplace_back( type, expr );
1858	}
1859
1860	if(mutated) {
1861	auto n = __pass::mutate<core_t>(node);
1862	n->associations = std::move( new_kids );
1863	node = n;
1864	}
1865	}
1866
1867	VISIT_END( Expr, node );
1868	}
1869
1870	//--------------------------------------------------------------------------
1871	// VoidType
1872	template< typename core_t >
1873	const ast::Type * ast::Pass< core_t >::visit( const ast::VoidType * node ) {
1874	VISIT_START( node );
1875
1876	VISIT_END( Type, node );
1877	}
1878
1879	//--------------------------------------------------------------------------
1880	// BasicType
1881	template< typename core_t >
1882	const ast::Type * ast::Pass< core_t >::visit( const ast::BasicType * node ) {
1883	VISIT_START( node );
1884
1885	VISIT_END( Type, node );
1886	}
1887
1888	//--------------------------------------------------------------------------
1889	// PointerType
1890	template< typename core_t >
1891	const ast::Type * ast::Pass< core_t >::visit( const ast::PointerType * node ) {
1892	VISIT_START( node );
1893
1894	if ( __visit_children() ) {
1895	maybe_accept( node, &PointerType::dimension );
1896	maybe_accept( node, &PointerType::base );
1897	}
1898
1899	VISIT_END( Type, node );
1900	}
1901
1902	//--------------------------------------------------------------------------
1903	// ArrayType
1904	template< typename core_t >
1905	const ast::Type * ast::Pass< core_t >::visit( const ast::ArrayType * node ) {
1906	VISIT_START( node );
1907
1908	if ( __visit_children() ) {
1909	maybe_accept( node, &ArrayType::dimension );
1910	maybe_accept( node, &ArrayType::base );
1911	}
1912
1913	VISIT_END( Type, node );
1914	}
1915
1916	//--------------------------------------------------------------------------
1917	// ReferenceType
1918	template< typename core_t >
1919	const ast::Type * ast::Pass< core_t >::visit( const ast::ReferenceType * node ) {
1920	VISIT_START( node );
1921
1922	if ( __visit_children() ) {
1923	maybe_accept( node, &ReferenceType::base );
1924	}
1925
1926	VISIT_END( Type, node );
1927	}
1928
1929	//--------------------------------------------------------------------------
1930	// QualifiedType
1931	template< typename core_t >
1932	const ast::Type * ast::Pass< core_t >::visit( const ast::QualifiedType * node ) {
1933	VISIT_START( node );
1934
1935	if ( __visit_children() ) {
1936	maybe_accept( node, &QualifiedType::parent );
1937	maybe_accept( node, &QualifiedType::child );
1938	}
1939
1940	VISIT_END( Type, node );
1941	}
1942
1943	//--------------------------------------------------------------------------
1944	// FunctionType
1945	template< typename core_t >
1946	const ast::Type * ast::Pass< core_t >::visit( const ast::FunctionType * node ) {
1947	VISIT_START( node );
1948
1949	if ( __visit_children() ) {
1950	// guard_forall_subs forall_guard { *this, node };
1951	// mutate_forall( node );
1952	maybe_accept( node, &FunctionType::assertions );
1953	maybe_accept( node, &FunctionType::returns );
1954	maybe_accept( node, &FunctionType::params );
1955	}
1956
1957	VISIT_END( Type, node );
1958	}
1959
1960	//--------------------------------------------------------------------------
1961	// StructInstType
1962	template< typename core_t >
1963	const ast::Type * ast::Pass< core_t >::visit( const ast::StructInstType * node ) {
1964	VISIT_START( node );
1965
1966	__pass::symtab::addStruct( core, 0, node->name );
1967
1968	if ( __visit_children() ) {
1969	guard_symtab guard { *this };
1970	maybe_accept( node, &StructInstType::params );
1971	}
1972
1973	VISIT_END( Type, node );
1974	}
1975
1976	//--------------------------------------------------------------------------
1977	// UnionInstType
1978	template< typename core_t >
1979	const ast::Type * ast::Pass< core_t >::visit( const ast::UnionInstType * node ) {
1980	VISIT_START( node );
1981
1982	__pass::symtab::addUnion( core, 0, node->name );
1983
1984	if ( __visit_children() ) {
1985	guard_symtab guard { *this };
1986	maybe_accept( node, &UnionInstType::params );
1987	}
1988
1989	VISIT_END( Type, node );
1990	}
1991
1992	//--------------------------------------------------------------------------
1993	// EnumInstType
1994	template< typename core_t >
1995	const ast::Type * ast::Pass< core_t >::visit( const ast::EnumInstType * node ) {
1996	VISIT_START( node );
1997
1998	if ( __visit_children() ) {
1999	maybe_accept( node, &EnumInstType::params );
2000	}
2001
2002	VISIT_END( Type, node );
2003	}
2004
2005	//--------------------------------------------------------------------------
2006	// TraitInstType
2007	template< typename core_t >
2008	const ast::Type * ast::Pass< core_t >::visit( const ast::TraitInstType * node ) {
2009	VISIT_START( node );
2010
2011	if ( __visit_children() ) {
2012	maybe_accept( node, &TraitInstType::params );
2013	}
2014
2015	VISIT_END( Type, node );
2016	}
2017
2018	//--------------------------------------------------------------------------
2019	// TypeInstType
2020	template< typename core_t >
2021	const ast::Type * ast::Pass< core_t >::visit( const ast::TypeInstType * node ) {
2022	VISIT_START( node );
2023
2024	if ( __visit_children() ) {
2025	{
2026	maybe_accept( node, &TypeInstType::params );
2027	}
2028	// ensure that base re-bound if doing substitution
2029	__pass::forall::replace( core, 0, node );
2030	}
2031
2032	VISIT_END( Type, node );
2033	}
2034
2035	//--------------------------------------------------------------------------
2036	// TupleType
2037	template< typename core_t >
2038	const ast::Type * ast::Pass< core_t >::visit( const ast::TupleType * node ) {
2039	VISIT_START( node );
2040
2041	if ( __visit_children() ) {
2042	maybe_accept( node, &TupleType::types );
2043	maybe_accept( node, &TupleType::members );
2044	}
2045
2046	VISIT_END( Type, node );
2047	}
2048
2049	//--------------------------------------------------------------------------
2050	// TypeofType
2051	template< typename core_t >
2052	const ast::Type * ast::Pass< core_t >::visit( const ast::TypeofType * node ) {
2053	VISIT_START( node );
2054
2055	if ( __visit_children() ) {
2056	maybe_accept( node, &TypeofType::expr );
2057	}
2058
2059	VISIT_END( Type, node );
2060	}
2061
2062	//--------------------------------------------------------------------------
2063	// VTableType
2064	template< typename core_t >
2065	const ast::Type * ast::Pass< core_t >::visit( const ast::VTableType * node ) {
2066	VISIT_START( node );
2067
2068	if ( __visit_children() ) {
2069	maybe_accept( node, &VTableType::base );
2070	}
2071
2072	VISIT_END( Type, node );
2073	}
2074
2075	//--------------------------------------------------------------------------
2076	// VarArgsType
2077	template< typename core_t >
2078	const ast::Type * ast::Pass< core_t >::visit( const ast::VarArgsType * node ) {
2079	VISIT_START( node );
2080
2081	VISIT_END( Type, node );
2082	}
2083
2084	//--------------------------------------------------------------------------
2085	// ZeroType
2086	template< typename core_t >
2087	const ast::Type * ast::Pass< core_t >::visit( const ast::ZeroType * node ) {
2088	VISIT_START( node );
2089
2090	VISIT_END( Type, node );
2091	}
2092
2093	//--------------------------------------------------------------------------
2094	// OneType
2095	template< typename core_t >
2096	const ast::Type * ast::Pass< core_t >::visit( const ast::OneType * node ) {
2097	VISIT_START( node );
2098
2099	VISIT_END( Type, node );
2100	}
2101
2102	//--------------------------------------------------------------------------
2103	// GlobalScopeType
2104	template< typename core_t >
2105	const ast::Type * ast::Pass< core_t >::visit( const ast::GlobalScopeType * node ) {
2106	VISIT_START( node );
2107
2108	VISIT_END( Type, node );
2109	}
2110
2111
2112	//--------------------------------------------------------------------------
2113	// Designation
2114	template< typename core_t >
2115	const ast::Designation * ast::Pass< core_t >::visit( const ast::Designation * node ) {
2116	VISIT_START( node );
2117
2118	if ( __visit_children() ) {
2119	maybe_accept( node, &Designation::designators );
2120	}
2121
2122	VISIT_END( Designation, node );
2123	}
2124
2125	//--------------------------------------------------------------------------
2126	// SingleInit
2127	template< typename core_t >
2128	const ast::Init * ast::Pass< core_t >::visit( const ast::SingleInit * node ) {
2129	VISIT_START( node );
2130
2131	if ( __visit_children() ) {
2132	maybe_accept_top( node, &SingleInit::value );
2133	}
2134
2135	VISIT_END( Init, node );
2136	}
2137
2138	//--------------------------------------------------------------------------
2139	// ListInit
2140	template< typename core_t >
2141	const ast::Init * ast::Pass< core_t >::visit( const ast::ListInit * node ) {
2142	VISIT_START( node );
2143
2144	if ( __visit_children() ) {
2145	maybe_accept( node, &ListInit::designations );
2146	maybe_accept( node, &ListInit::initializers );
2147	}
2148
2149	VISIT_END( Init, node );
2150	}
2151
2152	//--------------------------------------------------------------------------
2153	// ConstructorInit
2154	template< typename core_t >
2155	const ast::Init * ast::Pass< core_t >::visit( const ast::ConstructorInit * node ) {
2156	VISIT_START( node );
2157
2158	if ( __visit_children() ) {
2159	maybe_accept( node, &ConstructorInit::ctor );
2160	maybe_accept( node, &ConstructorInit::dtor );
2161	maybe_accept( node, &ConstructorInit::init );
2162	}
2163
2164	VISIT_END( Init, node );
2165	}
2166
2167	//--------------------------------------------------------------------------
2168	// Attribute
2169	template< typename core_t >
2170	const ast::Attribute * ast::Pass< core_t >::visit( const ast::Attribute * node ) {
2171	VISIT_START( node );
2172
2173	if ( __visit_children() ) {
2174	maybe_accept( node, &Attribute::params );
2175	}
2176
2177	VISIT_END( Attribute, node );
2178	}
2179
2180	//--------------------------------------------------------------------------
2181	// TypeSubstitution
2182	template< typename core_t >
2183	const ast::TypeSubstitution * ast::Pass< core_t >::visit( const ast::TypeSubstitution * node ) {
2184	VISIT_START( node );
2185
2186	if ( __visit_children() ) {
2187	bool mutated = false;
2188	ast::TypeSubstitution::TypeMap new_map;
2189	for ( const auto & p : node->typeMap ) {
2190	guard_symtab guard { *this };
2191	auto new_node = p.second->accept( *this );
2192	if (new_node != p.second) mutated = true;
2193	new_map.insert({ p.first, new_node });
2194	}
2195	if (mutated) {
2196	auto new_node = __pass::mutate<core_t>( node );
2197	new_node->typeMap.swap( new_map );
2198	node = new_node;
2199	}
2200	}
2201
2202	VISIT_END( TypeSubstitution, node );
2203	}
2204
2205	#undef VISIT_START
2206	#undef VISIT_END

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