source: src/AST/Pass.impl.hpp@ 6f096d2

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 6f096d2 was 0e42794, checked in by Aaron Moss <a3moss@…>, 6 years ago

Rewrite WithSymbolTable pass accessory to use ast::SymbolTable
  • Property mode set to 100644
File size: 55.1 KB
Line 
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/TypeSubstitution.hpp"
23
24#define VISIT_START( node ) \
25 using namespace ast; \
26 /* back-up the visit children */ \
27 __attribute__((unused)) ast::__pass::visit_children_guard guard1( ast::__pass::visit_children(pass, 0) ); \
28 /* setup the scope for passes that want to run code at exit */ \
29 __attribute__((unused)) ast::__pass::guard_value guard2( ast::__pass::at_cleanup (pass, 0) ); \
30 /* call the implementation of the previsit of this pass */ \
31 __pass::previsit( pass, node, 0 );
32
33#define VISIT( code... ) \
34 /* if this node should visit its children */ \
35 if ( __visit_children() ) { \
36 /* visit the children */ \
37 code \
38 }
39
40#define VISIT_END( type, node ) \
41 /* call the implementation of the postvisit of this pass */ \
42 auto __return = __pass::postvisit( pass, node, 0 ); \
43 assertf(__return, "post visit should never return null"); \
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
54namespace ast {
55 namespace __pass {
56 // Check if this is either a null pointer or a pointer to an empty container
57 template<typename T>
58 static inline bool empty( T * ptr ) {
59 return !ptr || ptr->empty();
60 }
61
62 //------------------------------
63 template<typename it_t, template <class...> class container_t>
64 static inline void take_all( it_t it, container_t<ast::ptr<ast::Decl>> * decls, bool * mutated = nullptr ) {
65 if(empty(decls)) return;
66
67 std::transform(decls->begin(), decls->end(), it, [](const ast::Decl * decl) -> auto {
68 return new DeclStmt( decl->location, decl );
69 });
70 decls->clear();
71 if(mutated) *mutated = true;
72 }
73
74 template<typename it_t, template <class...> class container_t>
75 static inline void take_all( it_t it, container_t<ast::ptr<ast::Stmt>> * decls, bool * mutated = nullptr ) {
76 if(empty(decls)) return;
77
78 std::move(decls->begin(), decls->end(), it);
79 decls->clear();
80 if(mutated) *mutated = true;
81 }
82
83 //------------------------------
84 /// Check if should be skipped, different for pointers and containers
85 template<typename node_t>
86 bool skip( const ast::ptr<node_t> & val) {
87 return !val;
88 }
89
90 template< template <class...> class container_t, typename node_t >
91 bool skip( const container_t<ast::ptr< node_t >> & val ) {
92 return val.empty();
93 }
94
95 //------------------------------
96 /// Get the value to visit, different for pointers and containers
97 template<typename node_t>
98 auto get( const ast::ptr<node_t> & val, int ) -> decltype(val.get()) {
99 return val.get();
100 }
101
102 template<typename node_t>
103 const node_t & get( const node_t & val, long) {
104 return val;
105 }
106
107
108 //------------------------------
109 /// Check if value was mutated, different for pointers and containers
110 template<typename lhs_t, typename rhs_t>
111 bool differs( const lhs_t * old_val, const rhs_t * new_val ) {
112 return old_val != new_val;
113 }
114
115 template< template <class...> class container_t, typename node_t >
116 bool differs( const container_t<ast::ptr< node_t >> &, const container_t<ast::ptr< node_t >> & new_val ) {
117 return !new_val.empty();
118 }
119 }
120
121 template< typename pass_t >
122 template< typename node_t >
123 auto ast::Pass< pass_t >::call_accept( const node_t * node )
124 -> typename std::enable_if<
125 !std::is_base_of<ast::Expr, node_t>::value &&
126 !std::is_base_of<ast::Stmt, node_t>::value
127 , decltype( node->accept(*this) )
128 >::type
129
130 {
131 __pedantic_pass_assert( __visit_children() );
132 __pedantic_pass_assert( expr );
133
134 static_assert( !std::is_base_of<ast::Expr, node_t>::value, "ERROR");
135 static_assert( !std::is_base_of<ast::Stmt, node_t>::value, "ERROR");
136
137 return node->accept( *this );
138 }
139
140 template< typename pass_t >
141 const ast::Expr * ast::Pass< pass_t >::call_accept( const ast::Expr * expr ) {
142 __pedantic_pass_assert( __visit_children() );
143 __pedantic_pass_assert( expr );
144
145 const ast::TypeSubstitution ** env_ptr = __pass::env( pass, 0);
146 if ( env_ptr && expr->env ) {
147 *env_ptr = expr->env;
148 }
149
150 return expr->accept( *this );
151 }
152
153 template< typename pass_t >
154 const ast::Stmt * ast::Pass< pass_t >::call_accept( const ast::Stmt * stmt ) {
155 __pedantic_pass_assert( __visit_children() );
156 __pedantic_pass_assert( stmt );
157
158 // add a few useful symbols to the scope
159 using __pass::empty;
160
161 // get the stmts/decls that will need to be spliced in
162 auto stmts_before = __pass::stmtsToAddBefore( pass, 0);
163 auto stmts_after = __pass::stmtsToAddAfter ( pass, 0);
164 auto decls_before = __pass::declsToAddBefore( pass, 0);
165 auto decls_after = __pass::declsToAddAfter ( pass, 0);
166
167 // These may be modified by subnode but most be restored once we exit this statemnet.
168 ValueGuardPtr< const ast::TypeSubstitution * > __old_env ( __pass::env( pass, 0) );
169 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
170 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
171 ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
172 ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
173
174 // Now is the time to actually visit the node
175 const ast::Stmt * nstmt = stmt->accept( *this );
176
177 // If the pass doesn't want to add anything then we are done
178 if( empty(stmts_before) && empty(stmts_after) && empty(decls_before) && empty(decls_after) ) {
179 return nstmt;
180 }
181
182 // Make sure that it is either adding statements or declartions but not both
183 // this is because otherwise the order would be awkward to predict
184 assert(( empty( stmts_before ) && empty( stmts_after ))
185 || ( empty( decls_before ) && empty( decls_after )) );
186
187 // Create a new Compound Statement to hold the new decls/stmts
188 ast::CompoundStmt * compound = new ast::CompoundStmt( stmt->location );
189
190 // Take all the declarations that go before
191 __pass::take_all( std::back_inserter( compound->kids ), decls_before );
192 __pass::take_all( std::back_inserter( compound->kids ), stmts_before );
193
194 // Insert the original declaration
195 compound->kids.emplace_back( nstmt );
196
197 // Insert all the declarations that go before
198 __pass::take_all( std::back_inserter( compound->kids ), decls_after );
199 __pass::take_all( std::back_inserter( compound->kids ), stmts_after );
200
201 return compound;
202 }
203
204 template< typename pass_t >
205 template< template <class...> class container_t >
206 container_t< ptr<Stmt> > ast::Pass< pass_t >::call_accept( const container_t< ptr<Stmt> > & statements ) {
207 __pedantic_pass_assert( __visit_children() );
208 if( statements.empty() ) return {};
209
210 // We are going to aggregate errors for all these statements
211 SemanticErrorException errors;
212
213 // add a few useful symbols to the scope
214 using __pass::empty;
215
216 // get the stmts/decls that will need to be spliced in
217 auto stmts_before = __pass::stmtsToAddBefore( pass, 0);
218 auto stmts_after = __pass::stmtsToAddAfter ( pass, 0);
219 auto decls_before = __pass::declsToAddBefore( pass, 0);
220 auto decls_after = __pass::declsToAddAfter ( pass, 0);
221
222 // These may be modified by subnode but most be restored once we exit this statemnet.
223 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
224 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
225 ValueGuardPtr< typename std::remove_pointer< decltype(decls_before) >::type > __old_stmts_before( decls_before );
226 ValueGuardPtr< typename std::remove_pointer< decltype(decls_after ) >::type > __old_stmts_after ( decls_after );
227
228 // update pass statitistics
229 pass_visitor_stats.depth++;
230 pass_visitor_stats.max->push(pass_visitor_stats.depth);
231 pass_visitor_stats.avg->push(pass_visitor_stats.depth);
232
233 bool mutated = false;
234 container_t< ptr<Stmt> > new_kids;
235 for( const Stmt * stmt : statements ) {
236 try {
237 __pedantic_pass_assert( stmt );
238 const ast::Stmt * new_stmt = stmt->accept( *this );
239 assert( new_stmt );
240 if(new_stmt != stmt ) mutated = true;
241
242 // Make sure that it is either adding statements or declartions but not both
243 // this is because otherwise the order would be awkward to predict
244 assert(( empty( stmts_before ) && empty( stmts_after ))
245 || ( empty( decls_before ) && empty( decls_after )) );
246
247
248
249 // Take all the statements which should have gone after, N/A for first iteration
250 __pass::take_all( std::back_inserter( new_kids ), decls_before, &mutated );
251 __pass::take_all( std::back_inserter( new_kids ), stmts_before, &mutated );
252
253 // Now add the statement if there is one
254 new_kids.emplace_back( new_stmt );
255
256 // Take all the declarations that go before
257 __pass::take_all( std::back_inserter( new_kids ), decls_after, &mutated );
258 __pass::take_all( std::back_inserter( new_kids ), stmts_after, &mutated );
259 }
260 catch ( SemanticErrorException &e ) {
261 errors.append( e );
262 }
263 }
264 pass_visitor_stats.depth--;
265 if ( !errors.isEmpty() ) { throw errors; }
266
267 return mutated ? new_kids : container_t< ptr<Stmt> >();
268 }
269
270 template< typename pass_t >
271 template< template <class...> class container_t, typename node_t >
272 container_t< ast::ptr<node_t> > ast::Pass< pass_t >::call_accept( const container_t< ast::ptr<node_t> > & container ) {
273 __pedantic_pass_assert( __visit_children() );
274 if( container.empty() ) return {};
275 SemanticErrorException errors;
276
277 pass_visitor_stats.depth++;
278 pass_visitor_stats.max->push(pass_visitor_stats.depth);
279 pass_visitor_stats.avg->push(pass_visitor_stats.depth);
280
281 bool mutated = false;
282 container_t< ast::ptr<node_t> > new_kids;
283 for ( const node_t * node : container ) {
284 try {
285 __pedantic_pass_assert( node );
286 const node_t * new_stmt = strict_dynamic_cast< const node_t * >( node->accept( *this ) );
287 if(new_stmt != node ) mutated = true;
288
289 new_kids.emplace_back( new_stmt );
290 }
291 catch( SemanticErrorException &e ) {
292 errors.append( e );
293 }
294 }
295 pass_visitor_stats.depth--;
296 if ( ! errors.isEmpty() ) { throw errors; }
297
298 return mutated ? new_kids : container_t< ast::ptr<node_t> >();
299 }
300
301 template< typename pass_t >
302 template<typename node_t, typename parent_t, typename child_t>
303 void ast::Pass< pass_t >::maybe_accept(
304 const node_t * & parent,
305 child_t parent_t::*child
306 ) {
307 static_assert( std::is_base_of<parent_t, node_t>::value, "Error deducing member object" );
308
309 if(__pass::skip(parent->*child)) return;
310 const auto & old_val = __pass::get(parent->*child, 0);
311
312 static_assert( !std::is_same<const ast::Node * &, decltype(old_val)>::value, "ERROR");
313
314 auto new_val = call_accept( old_val );
315
316 static_assert( !std::is_same<const ast::Node *, decltype(new_val)>::value || std::is_same<int, decltype(old_val)>::value, "ERROR");
317
318 if( __pass::differs(old_val, new_val) ) {
319 auto new_parent = mutate(parent);
320 new_parent->*child = new_val;
321 parent = new_parent;
322 }
323 }
324
325}
326
327//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
328//========================================================================================================================================================================
329//========================================================================================================================================================================
330//========================================================================================================================================================================
331//========================================================================================================================================================================
332//========================================================================================================================================================================
333//------------------------------------------------------------------------------------------------------------------------------------------------------------------------
334
335template< typename pass_t >
336inline void ast::accept_all( std::list< ast::ptr<ast::Decl> > & decls, ast::Pass< pass_t > & visitor ) {
337 // We are going to aggregate errors for all these statements
338 SemanticErrorException errors;
339
340 // add a few useful symbols to the scope
341 using __pass::empty;
342
343 // get the stmts/decls that will need to be spliced in
344 auto decls_before = __pass::declsToAddBefore( visitor.pass, 0);
345 auto decls_after = __pass::declsToAddAfter ( visitor.pass, 0);
346
347 // update pass statitistics
348 pass_visitor_stats.depth++;
349 pass_visitor_stats.max->push(pass_visitor_stats.depth);
350 pass_visitor_stats.avg->push(pass_visitor_stats.depth);
351
352 for ( std::list< ast::ptr<ast::Decl> >::iterator i = decls.begin(); ; ++i ) {
353 // splice in new declarations after previous decl
354 if ( !empty( decls_after ) ) { decls.splice( i, *decls_after ); }
355
356 if ( i == decls.end() ) break;
357
358 try {
359 // run visitor on declaration
360 ast::ptr<ast::Decl> & node = *i;
361 assert( node );
362 node = node->accept( visitor );
363 }
364 catch( SemanticErrorException &e ) {
365 errors.append( e );
366 }
367
368 // splice in new declarations before current decl
369 if ( !empty( decls_before ) ) { decls.splice( i, *decls_before ); }
370 }
371 pass_visitor_stats.depth--;
372 if ( !errors.isEmpty() ) { throw errors; }
373}
374
375// A NOTE ON THE ORDER OF TRAVERSAL
376//
377// Types and typedefs have their base types visited before they are added to the type table. This is ok, since there is
378// no such thing as a recursive type or typedef.
379//
380// typedef struct { T *x; } T; // never allowed
381//
382// for structs/unions, it is possible to have recursion, so the decl should be added as if it's incomplete to begin, the
383// members are traversed, and then the complete type should be added (assuming the type is completed by this particular
384// declaration).
385//
386// struct T { struct T *x; }; // allowed
387//
388// It is important to add the complete type to the symbol table *after* the members/base has been traversed, since that
389// traversal may modify the definition of the type and these modifications should be visible when the symbol table is
390// queried later in this pass.
391
392//--------------------------------------------------------------------------
393// ObjectDecl
394template< typename pass_t >
395const ast::DeclWithType * ast::Pass< pass_t >::visit( const ast::ObjectDecl * node ) {
396 VISIT_START( node );
397
398 VISIT(
399 {
400 guard_symtab guard { *this };
401 maybe_accept( node, &ObjectDecl::type );
402 }
403 maybe_accept( node, &ObjectDecl::init );
404 maybe_accept( node, &ObjectDecl::bitfieldWidth );
405 maybe_accept( node, &ObjectDecl::attributes );
406 )
407
408 __pass::symtab::addId( pass, 0, node );
409
410 VISIT_END( DeclWithType, node );
411}
412
413//--------------------------------------------------------------------------
414// FunctionDecl
415template< typename pass_t >
416const ast::DeclWithType * ast::Pass< pass_t >::visit( const ast::FunctionDecl * node ) {
417 VISIT_START( node );
418
419 __pass::symtab::addId( pass, 0, node );
420
421 VISIT(maybe_accept( node, &FunctionDecl::withExprs );)
422 {
423 // with clause introduces a level of scope (for the with expression members).
424 // with clause exprs are added to the symbol table before parameters so that parameters
425 // shadow with exprs and not the other way around.
426 guard_symtab guard { *this };
427 __pass::symtab::addWith( pass, 0, node->withExprs, node );
428 {
429 guard_symtab guard { *this };
430 // implicit add __func__ identifier as specified in the C manual 6.4.2.2
431 static ast::ObjectDecl func(
432 node->location, "__func__",
433 new ast::ArrayType(
434 new ast::BasicType( ast::BasicType::Char, ast::CV::Qualifiers( ast::CV::Const ) ),
435 nullptr, VariableLen, DynamicDim
436 )
437 );
438 __pass::symtab::addId( pass, 0, &func );
439 VISIT(
440 maybe_accept( node, &FunctionDecl::type );
441 // function body needs to have the same scope as parameters - CompoundStmt will not enter
442 // a new scope if inFunction is true
443 ValueGuard< bool > oldInFunction( inFunction );
444 inFunction = true;
445 maybe_accept( node, &FunctionDecl::stmts );
446 maybe_accept( node, &FunctionDecl::attributes );
447 )
448 }
449 }
450
451 VISIT_END( DeclWithType, node );
452}
453
454//--------------------------------------------------------------------------
455// StructDecl
456template< typename pass_t >
457const ast::Decl * ast::Pass< pass_t >::visit( const ast::StructDecl * node ) {
458 VISIT_START( node );
459
460 // make up a forward declaration and add it before processing the members
461 // needs to be on the heap because addStruct saves the pointer
462 __pass::symtab::addStructFwd( pass, 0, node );
463
464 VISIT({
465 guard_symtab guard { * this };
466 maybe_accept( node, &StructDecl::params );
467 maybe_accept( node, &StructDecl::members );
468 })
469
470 // this addition replaces the forward declaration
471 __pass::symtab::addStruct( pass, 0, node );
472
473 VISIT_END( Decl, node );
474}
475
476//--------------------------------------------------------------------------
477// UnionDecl
478template< typename pass_t >
479const ast::Decl * ast::Pass< pass_t >::visit( const ast::UnionDecl * node ) {
480 VISIT_START( node );
481
482 // make up a forward declaration and add it before processing the members
483 __pass::symtab::addUnionFwd( pass, 0, node );
484
485 VISIT({
486 guard_symtab guard { * this };
487 maybe_accept( node, &UnionDecl::params );
488 maybe_accept( node, &UnionDecl::members );
489 })
490
491 __pass::symtab::addUnion( pass, 0, node );
492
493 VISIT_END( Decl, node );
494}
495
496//--------------------------------------------------------------------------
497// EnumDecl
498template< typename pass_t >
499const ast::Decl * ast::Pass< pass_t >::visit( const ast::EnumDecl * node ) {
500 VISIT_START( node );
501
502 __pass::symtab::addEnum( pass, 0, node );
503
504 VISIT(
505 // unlike structs, traits, and unions, enums inject their members into the global scope
506 maybe_accept( node, &EnumDecl::params );
507 maybe_accept( node, &EnumDecl::members );
508 )
509
510 VISIT_END( Decl, node );
511}
512
513//--------------------------------------------------------------------------
514// TraitDecl
515template< typename pass_t >
516const ast::Decl * ast::Pass< pass_t >::visit( const ast::TraitDecl * node ) {
517 VISIT_START( node );
518
519 VISIT({
520 guard_symtab guard { *this };
521 maybe_accept( node, &TraitDecl::params );
522 maybe_accept( node, &TraitDecl::members );
523 })
524
525 __pass::symtab::addTrait( pass, 0, node );
526
527 VISIT_END( Decl, node );
528}
529
530//--------------------------------------------------------------------------
531// TypeDecl
532template< typename pass_t >
533const ast::Decl * ast::Pass< pass_t >::visit( const ast::TypeDecl * node ) {
534 VISIT_START( node );
535
536 VISIT({
537 guard_symtab guard { *this };
538 maybe_accept( node, &TypeDecl::params );
539 maybe_accept( node, &TypeDecl::base );
540 })
541
542 // see A NOTE ON THE ORDER OF TRAVERSAL, above
543 // note that assertions come after the type is added to the symtab, since they are not part of the type proper
544 // and may depend on the type itself
545 __pass::symtab::addType( pass, 0, node );
546
547 VISIT(
548 maybe_accept( node, &TypeDecl::assertions );
549
550 {
551 guard_symtab guard { *this };
552 maybe_accept( node, &TypeDecl::init );
553 }
554 )
555
556 VISIT_END( Decl, node );
557}
558
559//--------------------------------------------------------------------------
560// TypedefDecl
561template< typename pass_t >
562const ast::Decl * ast::Pass< pass_t >::visit( const ast::TypedefDecl * node ) {
563 VISIT_START( node );
564
565 VISIT({
566 guard_symtab guard { *this };
567 maybe_accept( node, &TypedefDecl::params );
568 maybe_accept( node, &TypedefDecl::base );
569 })
570
571 __pass::symtab::addType( pass, 0, node );
572
573 VISIT( maybe_accept( node, &TypedefDecl::assertions ); )
574
575 VISIT_END( Decl, node );
576}
577
578//--------------------------------------------------------------------------
579// AsmDecl
580template< typename pass_t >
581const ast::AsmDecl * ast::Pass< pass_t >::visit( const ast::AsmDecl * node ) {
582 VISIT_START( node );
583
584 VISIT(
585 maybe_accept( node, &AsmDecl::stmt );
586 )
587
588 VISIT_END( AsmDecl, node );
589}
590
591//--------------------------------------------------------------------------
592// StaticAssertDecl
593template< typename pass_t >
594const ast::StaticAssertDecl * ast::Pass< pass_t >::visit( const ast::StaticAssertDecl * node ) {
595 VISIT_START( node );
596
597 VISIT(
598 maybe_accept( node, &StaticAssertDecl::cond );
599 maybe_accept( node, &StaticAssertDecl::msg );
600 )
601
602 VISIT_END( StaticAssertDecl, node );
603}
604
605//--------------------------------------------------------------------------
606// CompoundStmt
607template< typename pass_t >
608const ast::CompoundStmt * ast::Pass< pass_t >::visit( const ast::CompoundStmt * node ) {
609 VISIT_START( node );
610 VISIT({
611 // do not enter a new scope if inFunction is true - needs to check old state before the assignment
612 auto guard1 = makeFuncGuard( [this, inFunction = this->inFunction]() {
613 if ( ! inFunction ) __pass::symtab::enter(pass, 0);
614 }, [this, inFunction = this->inFunction]() {
615 if ( ! inFunction ) __pass::symtab::leave(pass, 0);
616 });
617 ValueGuard< bool > guard2( inFunction );
618 guard_scope guard3 { *this };
619 inFunction = false;
620 maybe_accept( node, &CompoundStmt::kids );
621 })
622 VISIT_END( CompoundStmt, node );
623}
624
625//--------------------------------------------------------------------------
626// ExprStmt
627template< typename pass_t >
628const ast::Stmt * ast::Pass< pass_t >::visit( const ast::ExprStmt * node ) {
629 VISIT_START( node );
630
631 VISIT(
632 maybe_accept( node, &ExprStmt::expr );
633 )
634
635 VISIT_END( Stmt, node );
636}
637
638//--------------------------------------------------------------------------
639// AsmStmt
640template< typename pass_t >
641const ast::Stmt * ast::Pass< pass_t >::visit( const ast::AsmStmt * node ) {
642 VISIT_START( node )
643
644 VISIT(
645 maybe_accept( node, &AsmStmt::instruction );
646 maybe_accept( node, &AsmStmt::output );
647 maybe_accept( node, &AsmStmt::input );
648 maybe_accept( node, &AsmStmt::clobber );
649 )
650
651 VISIT_END( Stmt, node );
652}
653
654//--------------------------------------------------------------------------
655// DirectiveStmt
656template< typename pass_t >
657const ast::Stmt * ast::Pass< pass_t >::visit( const ast::DirectiveStmt * node ) {
658 VISIT_START( node )
659
660 VISIT_END( Stmt, node );
661}
662
663//--------------------------------------------------------------------------
664// IfStmt
665template< typename pass_t >
666const ast::Stmt * ast::Pass< pass_t >::visit( const ast::IfStmt * node ) {
667 VISIT_START( node );
668
669 VISIT({
670 // if statements introduce a level of scope (for the initialization)
671 guard_symtab guard { *this };
672 maybe_accept( node, &IfStmt::inits );
673 maybe_accept( node, &IfStmt::cond );
674 maybe_accept( node, &IfStmt::thenPart );
675 maybe_accept( node, &IfStmt::elsePart );
676 })
677
678 VISIT_END( Stmt, node );
679}
680
681//--------------------------------------------------------------------------
682// WhileStmt
683template< typename pass_t >
684const ast::Stmt * ast::Pass< pass_t >::visit( const ast::WhileStmt * node ) {
685 VISIT_START( node );
686
687 VISIT({
688 // while statements introduce a level of scope (for the initialization)
689 guard_symtab guard { *this };
690 maybe_accept( node, &WhileStmt::inits );
691 maybe_accept( node, &WhileStmt::cond );
692 maybe_accept( node, &WhileStmt::body );
693 })
694
695 VISIT_END( Stmt, node );
696}
697
698//--------------------------------------------------------------------------
699// ForStmt
700template< typename pass_t >
701const ast::Stmt * ast::Pass< pass_t >::visit( const ast::ForStmt * node ) {
702 VISIT_START( node );
703
704 VISIT({
705 // for statements introduce a level of scope (for the initialization)
706 guard_symtab guard { *this };
707 maybe_accept( node, &ForStmt::inits );
708 maybe_accept( node, &ForStmt::cond );
709 maybe_accept( node, &ForStmt::inc );
710 maybe_accept( node, &ForStmt::body );
711 })
712
713 VISIT_END( Stmt, node );
714}
715
716//--------------------------------------------------------------------------
717// SwitchStmt
718template< typename pass_t >
719const ast::Stmt * ast::Pass< pass_t >::visit( const ast::SwitchStmt * node ) {
720 VISIT_START( node );
721
722 VISIT(
723 maybe_accept( node, &SwitchStmt::cond );
724 maybe_accept( node, &SwitchStmt::stmts );
725 )
726
727 VISIT_END( Stmt, node );
728}
729
730//--------------------------------------------------------------------------
731// CaseStmt
732template< typename pass_t >
733const ast::Stmt * ast::Pass< pass_t >::visit( const ast::CaseStmt * node ) {
734 VISIT_START( node );
735
736 VISIT(
737 maybe_accept( node, &CaseStmt::cond );
738 maybe_accept( node, &CaseStmt::stmts );
739 )
740
741 VISIT_END( Stmt, node );
742}
743
744//--------------------------------------------------------------------------
745// BranchStmt
746template< typename pass_t >
747const ast::Stmt * ast::Pass< pass_t >::visit( const ast::BranchStmt * node ) {
748 VISIT_START( node );
749 VISIT_END( Stmt, node );
750}
751
752//--------------------------------------------------------------------------
753// ReturnStmt
754template< typename pass_t >
755const ast::Stmt * ast::Pass< pass_t >::visit( const ast::ReturnStmt * node ) {
756 VISIT_START( node );
757
758 VISIT(
759 maybe_accept( node, &ReturnStmt::expr );
760 )
761
762 VISIT_END( Stmt, node );
763}
764
765//--------------------------------------------------------------------------
766// ThrowStmt
767template< typename pass_t >
768const ast::Stmt * ast::Pass< pass_t >::visit( const ast::ThrowStmt * node ) {
769 VISIT_START( node );
770
771 VISIT(
772 maybe_accept( node, &ThrowStmt::expr );
773 maybe_accept( node, &ThrowStmt::target );
774 )
775
776 VISIT_END( Stmt, node );
777}
778
779//--------------------------------------------------------------------------
780// TryStmt
781template< typename pass_t >
782const ast::Stmt * ast::Pass< pass_t >::visit( const ast::TryStmt * node ) {
783 VISIT_START( node );
784
785 VISIT(
786 maybe_accept( node, &TryStmt::body );
787 maybe_accept( node, &TryStmt::handlers );
788 maybe_accept( node, &TryStmt::finally );
789 )
790
791 VISIT_END( Stmt, node );
792}
793
794//--------------------------------------------------------------------------
795// CatchStmt
796template< typename pass_t >
797const ast::Stmt * ast::Pass< pass_t >::visit( const ast::CatchStmt * node ) {
798 VISIT_START( node );
799
800 VISIT({
801 // catch statements introduce a level of scope (for the caught exception)
802 guard_symtab guard { *this };
803 maybe_accept( node, &CatchStmt::decl );
804 maybe_accept( node, &CatchStmt::cond );
805 maybe_accept( node, &CatchStmt::body );
806 })
807
808 VISIT_END( Stmt, node );
809}
810
811//--------------------------------------------------------------------------
812// FinallyStmt
813template< typename pass_t >
814const ast::Stmt * ast::Pass< pass_t >::visit( const ast::FinallyStmt * node ) {
815 VISIT_START( node );
816
817 VISIT(
818 maybe_accept( node, &FinallyStmt::body );
819 )
820
821 VISIT_END( Stmt, node );
822}
823
824//--------------------------------------------------------------------------
825// WaitForStmt
826template< typename pass_t >
827const ast::Stmt * ast::Pass< pass_t >::visit( const ast::WaitForStmt * node ) {
828 VISIT_START( node );
829 // for( auto & clause : node->clauses ) {
830 // maybeAccept_impl( clause.target.function, *this );
831 // maybeAccept_impl( clause.target.arguments, *this );
832
833 // maybeAccept_impl( clause.statement, *this );
834 // maybeAccept_impl( clause.condition, *this );
835 // }
836
837 VISIT({
838 std::vector<WaitForStmt::Clause> new_clauses;
839 new_clauses.reserve( node->clauses.size() );
840 bool mutated = false;
841 for( const auto & clause : node->clauses ) {
842
843 const Expr * func = clause.target.func ? clause.target.func->accept(*this) : nullptr;
844 if(func != clause.target.func) mutated = true;
845
846 std::vector<ptr<Expr>> new_args;
847 new_args.reserve(clause.target.args.size());
848 for( const auto & arg : clause.target.args ) {
849 auto a = arg->accept(*this);
850 new_args.push_back( a );
851 if( a != arg ) mutated = true;
852 }
853
854 const Stmt * stmt = clause.stmt ? clause.stmt->accept(*this) : nullptr;
855 if(stmt != clause.stmt) mutated = true;
856
857 const Expr * cond = clause.cond ? clause.cond->accept(*this) : nullptr;
858 if(cond != clause.cond) mutated = true;
859
860 new_clauses.push_back( WaitForStmt::Clause{ {func, std::move(new_args) }, stmt, cond } );
861 }
862
863 if(mutated) {
864 auto n = mutate(node);
865 n->clauses = std::move( new_clauses );
866 node = n;
867 }
868 })
869
870 #define maybe_accept(field) \
871 if(node->field) { \
872 auto nval = call_accept( node->field ); \
873 if(nval != node->field ) { \
874 auto nparent = mutate(node); \
875 nparent->field = nval; \
876 node = nparent; \
877 } \
878 }
879
880 VISIT(
881 maybe_accept( timeout.time );
882 maybe_accept( timeout.stmt );
883 maybe_accept( timeout.cond );
884 maybe_accept( orElse.stmt );
885 maybe_accept( orElse.cond );
886 )
887
888 #undef maybe_accept
889
890 VISIT_END( Stmt, node );
891}
892
893//--------------------------------------------------------------------------
894// WithStmt
895template< typename pass_t >
896const ast::Stmt * ast::Pass< pass_t >::visit( const ast::WithStmt * node ) {
897 VISIT_START( node );
898
899 VISIT(
900 maybe_accept( node, &WithStmt::exprs );
901 {
902 // catch statements introduce a level of scope (for the caught exception)
903 guard_symtab guard { *this };
904 __pass::symtab::addWith( pass, 0, node->exprs, node );
905 maybe_accept( node, &WithStmt::stmt );
906 }
907 )
908 VISIT_END( Stmt, node );
909}
910
911//--------------------------------------------------------------------------
912// NullStmt
913template< typename pass_t >
914const ast::NullStmt * ast::Pass< pass_t >::visit( const ast::NullStmt * node ) {
915 VISIT_START( node );
916 VISIT_END( NullStmt, node );
917}
918
919//--------------------------------------------------------------------------
920// DeclStmt
921template< typename pass_t >
922const ast::Stmt * ast::Pass< pass_t >::visit( const ast::DeclStmt * node ) {
923 VISIT_START( node );
924
925 VISIT(
926 maybe_accept( node, &DeclStmt::decl );
927 )
928
929 VISIT_END( Stmt, node );
930}
931
932//--------------------------------------------------------------------------
933// ImplicitCtorDtorStmt
934template< typename pass_t >
935const ast::Stmt * ast::Pass< pass_t >::visit( const ast::ImplicitCtorDtorStmt * node ) {
936 VISIT_START( node );
937
938 // For now this isn't visited, it is unclear if this causes problem
939 // if all tests are known to pass, remove this code
940 // VISIT(
941 // maybe_accept( node, &ImplicitCtorDtorStmt::callStmt );
942 // )
943
944 VISIT_END( Stmt, node );
945}
946
947//--------------------------------------------------------------------------
948// ApplicationExpr
949template< typename pass_t >
950const ast::Expr * ast::Pass< pass_t >::visit( const ast::ApplicationExpr * node ) {
951 VISIT_START( node );
952
953 VISIT(
954 {
955 guard_symtab guard { *this };
956 maybe_accept( node, &ApplicationExpr::result );
957 }
958 maybe_accept( node, &ApplicationExpr::func );
959 maybe_accept( node, &ApplicationExpr::args );
960 )
961
962 VISIT_END( Expr, node );
963}
964
965//--------------------------------------------------------------------------
966// UntypedExpr
967template< typename pass_t >
968const ast::Expr * ast::Pass< pass_t >::visit( const ast::UntypedExpr * node ) {
969 VISIT_START( node );
970
971 VISIT(
972 {
973 guard_symtab guard { *this };
974 maybe_accept( node, &UntypedExpr::result );
975 }
976
977 maybe_accept( node, &UntypedExpr::args );
978 )
979
980 VISIT_END( Expr, node );
981}
982
983//--------------------------------------------------------------------------
984// NameExpr
985template< typename pass_t >
986const ast::Expr * ast::Pass< pass_t >::visit( const ast::NameExpr * node ) {
987 VISIT_START( node );
988
989 VISIT({
990 guard_symtab guard { *this };
991 maybe_accept( node, &NameExpr::result );
992 })
993
994 VISIT_END( Expr, node );
995}
996
997//--------------------------------------------------------------------------
998// CastExpr
999template< typename pass_t >
1000const ast::Expr * ast::Pass< pass_t >::visit( const ast::CastExpr * node ) {
1001 VISIT_START( node );
1002
1003 VISIT({
1004 guard_symtab guard { *this };
1005 maybe_accept( node, &CastExpr::result );
1006 }
1007 maybe_accept( node, &CastExpr::arg );
1008 )
1009
1010 VISIT_END( Expr, node );
1011}
1012
1013//--------------------------------------------------------------------------
1014// KeywordCastExpr
1015template< typename pass_t >
1016const ast::Expr * ast::Pass< pass_t >::visit( const ast::KeywordCastExpr * node ) {
1017 VISIT_START( node );
1018
1019 VISIT({
1020 guard_symtab guard { *this };
1021 maybe_accept( node, &KeywordCastExpr::result );
1022 }
1023 maybe_accept( node, &KeywordCastExpr::arg );
1024 )
1025
1026 VISIT_END( Expr, node );
1027}
1028
1029//--------------------------------------------------------------------------
1030// VirtualCastExpr
1031template< typename pass_t >
1032const ast::Expr * ast::Pass< pass_t >::visit( const ast::VirtualCastExpr * node ) {
1033 VISIT_START( node );
1034
1035 VISIT({
1036 guard_symtab guard { *this };
1037 maybe_accept( node, &VirtualCastExpr::result );
1038 }
1039 maybe_accept( node, &VirtualCastExpr::arg );
1040 )
1041
1042 VISIT_END( Expr, node );
1043}
1044
1045//--------------------------------------------------------------------------
1046// AddressExpr
1047template< typename pass_t >
1048const ast::Expr * ast::Pass< pass_t >::visit( const ast::AddressExpr * node ) {
1049 VISIT_START( node );
1050
1051 VISIT({
1052 guard_symtab guard { *this };
1053 maybe_accept( node, &AddressExpr::result );
1054 }
1055 maybe_accept( node, &AddressExpr::arg );
1056 )
1057
1058 VISIT_END( Expr, node );
1059}
1060
1061//--------------------------------------------------------------------------
1062// LabelAddressExpr
1063template< typename pass_t >
1064const ast::Expr * ast::Pass< pass_t >::visit( const ast::LabelAddressExpr * node ) {
1065 VISIT_START( node );
1066
1067 VISIT({
1068 guard_symtab guard { *this };
1069 maybe_accept( node, &LabelAddressExpr::result );
1070 })
1071
1072 VISIT_END( Expr, node );
1073}
1074
1075//--------------------------------------------------------------------------
1076// UntypedMemberExpr
1077template< typename pass_t >
1078const ast::Expr * ast::Pass< pass_t >::visit( const ast::UntypedMemberExpr * node ) {
1079 VISIT_START( node );
1080
1081 VISIT({
1082 guard_symtab guard { *this };
1083 maybe_accept( node, &UntypedMemberExpr::result );
1084 }
1085 maybe_accept( node, &UntypedMemberExpr::aggregate );
1086 maybe_accept( node, &UntypedMemberExpr::member );
1087 )
1088
1089 VISIT_END( Expr, node );
1090}
1091
1092//--------------------------------------------------------------------------
1093// MemberExpr
1094template< typename pass_t >
1095const ast::Expr * ast::Pass< pass_t >::visit( const ast::MemberExpr * node ) {
1096 VISIT_START( node );
1097
1098 VISIT({
1099 guard_symtab guard { *this };
1100 maybe_accept( node, &MemberExpr::result );
1101 }
1102 maybe_accept( node, &MemberExpr::aggregate );
1103 )
1104
1105 VISIT_END( Expr, node );
1106}
1107
1108//--------------------------------------------------------------------------
1109// VariableExpr
1110template< typename pass_t >
1111const ast::Expr * ast::Pass< pass_t >::visit( const ast::VariableExpr * node ) {
1112 VISIT_START( node );
1113
1114 VISIT({
1115 guard_symtab guard { *this };
1116 maybe_accept( node, &VariableExpr::result );
1117 })
1118
1119 VISIT_END( Expr, node );
1120}
1121
1122//--------------------------------------------------------------------------
1123// ConstantExpr
1124template< typename pass_t >
1125const ast::Expr * ast::Pass< pass_t >::visit( const ast::ConstantExpr * node ) {
1126 VISIT_START( node );
1127
1128 VISIT({
1129 guard_symtab guard { *this };
1130 maybe_accept( node, &ConstantExpr::result );
1131 })
1132
1133 VISIT_END( Expr, node );
1134}
1135
1136//--------------------------------------------------------------------------
1137// SizeofExpr
1138template< typename pass_t >
1139const ast::Expr * ast::Pass< pass_t >::visit( const ast::SizeofExpr * node ) {
1140 VISIT_START( node );
1141
1142 VISIT({
1143 guard_symtab guard { *this };
1144 maybe_accept( node, &SizeofExpr::result );
1145 }
1146 if ( node->type ) {
1147 maybe_accept( node, &SizeofExpr::type );
1148 } else {
1149 maybe_accept( node, &SizeofExpr::expr );
1150 }
1151 )
1152
1153 VISIT_END( Expr, node );
1154}
1155
1156//--------------------------------------------------------------------------
1157// AlignofExpr
1158template< typename pass_t >
1159const ast::Expr * ast::Pass< pass_t >::visit( const ast::AlignofExpr * node ) {
1160 VISIT_START( node );
1161
1162 VISIT({
1163 guard_symtab guard { *this };
1164 maybe_accept( node, &AlignofExpr::result );
1165 }
1166 if ( node->type ) {
1167 maybe_accept( node, &AlignofExpr::type );
1168 } else {
1169 maybe_accept( node, &AlignofExpr::expr );
1170 }
1171 )
1172
1173 VISIT_END( Expr, node );
1174}
1175
1176//--------------------------------------------------------------------------
1177// UntypedOffsetofExpr
1178template< typename pass_t >
1179const ast::Expr * ast::Pass< pass_t >::visit( const ast::UntypedOffsetofExpr * node ) {
1180 VISIT_START( node );
1181
1182 VISIT({
1183 guard_symtab guard { *this };
1184 maybe_accept( node, &UntypedOffsetofExpr::result );
1185 }
1186 maybe_accept( node, &UntypedOffsetofExpr::type );
1187 )
1188
1189 VISIT_END( Expr, node );
1190}
1191
1192//--------------------------------------------------------------------------
1193// OffsetofExpr
1194template< typename pass_t >
1195const ast::Expr * ast::Pass< pass_t >::visit( const ast::OffsetofExpr * node ) {
1196 VISIT_START( node );
1197
1198 VISIT({
1199 guard_symtab guard { *this };
1200 maybe_accept( node, &OffsetofExpr::result );
1201 }
1202 maybe_accept( node, &OffsetofExpr::type );
1203 )
1204
1205 VISIT_END( Expr, node );
1206}
1207
1208//--------------------------------------------------------------------------
1209// OffsetPackExpr
1210template< typename pass_t >
1211const ast::Expr * ast::Pass< pass_t >::visit( const ast::OffsetPackExpr * node ) {
1212 VISIT_START( node );
1213
1214 VISIT({
1215 guard_symtab guard { *this };
1216 maybe_accept( node, &OffsetPackExpr::result );
1217 }
1218 maybe_accept( node, &OffsetPackExpr::type );
1219 )
1220
1221 VISIT_END( Expr, node );
1222}
1223
1224//--------------------------------------------------------------------------
1225// LogicalExpr
1226template< typename pass_t >
1227const ast::Expr * ast::Pass< pass_t >::visit( const ast::LogicalExpr * node ) {
1228 VISIT_START( node );
1229
1230 VISIT({
1231 guard_symtab guard { *this };
1232 maybe_accept( node, &LogicalExpr::result );
1233 }
1234 maybe_accept( node, &LogicalExpr::arg1 );
1235 maybe_accept( node, &LogicalExpr::arg2 );
1236 )
1237
1238 VISIT_END( Expr, node );
1239}
1240
1241//--------------------------------------------------------------------------
1242// ConditionalExpr
1243template< typename pass_t >
1244const ast::Expr * ast::Pass< pass_t >::visit( const ast::ConditionalExpr * node ) {
1245 VISIT_START( node );
1246
1247 VISIT({
1248 guard_symtab guard { *this };
1249 maybe_accept( node, &ConditionalExpr::result );
1250 }
1251 maybe_accept( node, &ConditionalExpr::arg1 );
1252 maybe_accept( node, &ConditionalExpr::arg2 );
1253 maybe_accept( node, &ConditionalExpr::arg3 );
1254 )
1255
1256 VISIT_END( Expr, node );
1257}
1258
1259//--------------------------------------------------------------------------
1260// CommaExpr
1261template< typename pass_t >
1262const ast::Expr * ast::Pass< pass_t >::visit( const ast::CommaExpr * node ) {
1263 VISIT_START( node );
1264
1265 VISIT({
1266 guard_symtab guard { *this };
1267 maybe_accept( node, &CommaExpr::result );
1268 }
1269 maybe_accept( node, &CommaExpr::arg1 );
1270 maybe_accept( node, &CommaExpr::arg2 );
1271 )
1272
1273 VISIT_END( Expr, node );
1274}
1275
1276//--------------------------------------------------------------------------
1277// TypeExpr
1278template< typename pass_t >
1279const ast::Expr * ast::Pass< pass_t >::visit( const ast::TypeExpr * node ) {
1280 VISIT_START( node );
1281
1282 VISIT({
1283 guard_symtab guard { *this };
1284 maybe_accept( node, &TypeExpr::result );
1285 }
1286 maybe_accept( node, &TypeExpr::type );
1287 )
1288
1289 VISIT_END( Expr, node );
1290}
1291
1292//--------------------------------------------------------------------------
1293// AsmExpr
1294template< typename pass_t >
1295const ast::Expr * ast::Pass< pass_t >::visit( const ast::AsmExpr * node ) {
1296 VISIT_START( node );
1297
1298 VISIT({
1299 guard_symtab guard { *this };
1300 maybe_accept( node, &AsmExpr::result );
1301 }
1302 maybe_accept( node, &AsmExpr::inout );
1303 maybe_accept( node, &AsmExpr::constraint );
1304 maybe_accept( node, &AsmExpr::operand );
1305 )
1306
1307 VISIT_END( Expr, node );
1308}
1309
1310//--------------------------------------------------------------------------
1311// ImplicitCopyCtorExpr
1312template< typename pass_t >
1313const ast::Expr * ast::Pass< pass_t >::visit( const ast::ImplicitCopyCtorExpr * node ) {
1314 VISIT_START( node );
1315
1316 VISIT({
1317 guard_symtab guard { *this };
1318 maybe_accept( node, &ImplicitCopyCtorExpr::result );
1319 }
1320 maybe_accept( node, &ImplicitCopyCtorExpr::callExpr );
1321 )
1322
1323 VISIT_END( Expr, node );
1324}
1325
1326//--------------------------------------------------------------------------
1327// ConstructorExpr
1328template< typename pass_t >
1329const ast::Expr * ast::Pass< pass_t >::visit( const ast::ConstructorExpr * node ) {
1330 VISIT_START( node );
1331
1332 VISIT({
1333 guard_symtab guard { *this };
1334 maybe_accept( node, &ConstructorExpr::result );
1335 }
1336 maybe_accept( node, &ConstructorExpr::callExpr );
1337 )
1338
1339 VISIT_END( Expr, node );
1340}
1341
1342//--------------------------------------------------------------------------
1343// CompoundLiteralExpr
1344template< typename pass_t >
1345const ast::Expr * ast::Pass< pass_t >::visit( const ast::CompoundLiteralExpr * node ) {
1346 VISIT_START( node );
1347
1348 VISIT({
1349 guard_symtab guard { *this };
1350 maybe_accept( node, &CompoundLiteralExpr::result );
1351 }
1352 maybe_accept( node, &CompoundLiteralExpr::init );
1353 )
1354
1355 VISIT_END( Expr, node );
1356}
1357
1358//--------------------------------------------------------------------------
1359// RangeExpr
1360template< typename pass_t >
1361const ast::Expr * ast::Pass< pass_t >::visit( const ast::RangeExpr * node ) {
1362 VISIT_START( node );
1363
1364 VISIT({
1365 guard_symtab guard { *this };
1366 maybe_accept( node, &RangeExpr::result );
1367 }
1368 maybe_accept( node, &RangeExpr::low );
1369 maybe_accept( node, &RangeExpr::high );
1370 )
1371
1372 VISIT_END( Expr, node );
1373}
1374
1375//--------------------------------------------------------------------------
1376// UntypedTupleExpr
1377template< typename pass_t >
1378const ast::Expr * ast::Pass< pass_t >::visit( const ast::UntypedTupleExpr * node ) {
1379 VISIT_START( node );
1380
1381 VISIT({
1382 guard_symtab guard { *this };
1383 maybe_accept( node, &UntypedTupleExpr::result );
1384 }
1385 maybe_accept( node, &UntypedTupleExpr::exprs );
1386 )
1387
1388 VISIT_END( Expr, node );
1389}
1390
1391//--------------------------------------------------------------------------
1392// TupleExpr
1393template< typename pass_t >
1394const ast::Expr * ast::Pass< pass_t >::visit( const ast::TupleExpr * node ) {
1395 VISIT_START( node );
1396
1397 VISIT({
1398 guard_symtab guard { *this };
1399 maybe_accept( node, &TupleExpr::result );
1400 }
1401 maybe_accept( node, &TupleExpr::exprs );
1402 )
1403
1404 VISIT_END( Expr, node );
1405}
1406
1407//--------------------------------------------------------------------------
1408// TupleIndexExpr
1409template< typename pass_t >
1410const ast::Expr * ast::Pass< pass_t >::visit( const ast::TupleIndexExpr * node ) {
1411 VISIT_START( node );
1412
1413 VISIT({
1414 guard_symtab guard { *this };
1415 maybe_accept( node, &TupleIndexExpr::result );
1416 }
1417 maybe_accept( node, &TupleIndexExpr::tuple );
1418 )
1419
1420 VISIT_END( Expr, node );
1421}
1422
1423//--------------------------------------------------------------------------
1424// TupleAssignExpr
1425template< typename pass_t >
1426const ast::Expr * ast::Pass< pass_t >::visit( const ast::TupleAssignExpr * node ) {
1427 VISIT_START( node );
1428
1429 VISIT({
1430 guard_symtab guard { *this };
1431 maybe_accept( node, &TupleAssignExpr::result );
1432 }
1433 maybe_accept( node, &TupleAssignExpr::stmtExpr );
1434 )
1435
1436 VISIT_END( Expr, node );
1437}
1438
1439//--------------------------------------------------------------------------
1440// StmtExpr
1441template< typename pass_t >
1442const ast::Expr * ast::Pass< pass_t >::visit( const ast::StmtExpr * node ) {
1443 VISIT_START( node );
1444
1445 VISIT(// don't want statements from outer CompoundStmts to be added to this StmtExpr
1446 // get the stmts that will need to be spliced in
1447 auto stmts_before = __pass::stmtsToAddBefore( pass, 0);
1448 auto stmts_after = __pass::stmtsToAddAfter ( pass, 0);
1449
1450 // These may be modified by subnode but most be restored once we exit this statemnet.
1451 ValueGuardPtr< const ast::TypeSubstitution * > __old_env( __pass::env( pass, 0) );
1452 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_before) >::type > __old_decls_before( stmts_before );
1453 ValueGuardPtr< typename std::remove_pointer< decltype(stmts_after ) >::type > __old_decls_after ( stmts_after );
1454
1455 {
1456 guard_symtab guard { *this };
1457 maybe_accept( node, &StmtExpr::result );
1458 }
1459 maybe_accept( node, &StmtExpr::stmts );
1460 maybe_accept( node, &StmtExpr::returnDecls );
1461 maybe_accept( node, &StmtExpr::dtors );
1462 )
1463
1464 VISIT_END( Expr, node );
1465}
1466
1467//--------------------------------------------------------------------------
1468// UniqueExpr
1469template< typename pass_t >
1470const ast::Expr * ast::Pass< pass_t >::visit( const ast::UniqueExpr * node ) {
1471 VISIT_START( node );
1472
1473 VISIT({
1474 guard_symtab guard { *this };
1475 maybe_accept( node, &UniqueExpr::result );
1476 }
1477 maybe_accept( node, &UniqueExpr::expr );
1478 )
1479
1480 VISIT_END( Expr, node );
1481}
1482
1483//--------------------------------------------------------------------------
1484// UntypedInitExpr
1485template< typename pass_t >
1486const ast::Expr * ast::Pass< pass_t >::visit( const ast::UntypedInitExpr * node ) {
1487 VISIT_START( node );
1488
1489 VISIT({
1490 guard_symtab guard { *this };
1491 maybe_accept( node, &UntypedInitExpr::result );
1492 }
1493 maybe_accept( node, &UntypedInitExpr::expr );
1494 // not currently visiting initAlts, but this doesn't matter since this node is only used in the resolver.
1495 )
1496
1497 VISIT_END( Expr, node );
1498}
1499
1500//--------------------------------------------------------------------------
1501// InitExpr
1502template< typename pass_t >
1503const ast::Expr * ast::Pass< pass_t >::visit( const ast::InitExpr * node ) {
1504 VISIT_START( node );
1505
1506 VISIT({
1507 guard_symtab guard { *this };
1508 maybe_accept( node, &InitExpr::result );
1509 }
1510 maybe_accept( node, &InitExpr::expr );
1511 maybe_accept( node, &InitExpr::designation );
1512 )
1513
1514 VISIT_END( Expr, node );
1515}
1516
1517//--------------------------------------------------------------------------
1518// DeletedExpr
1519template< typename pass_t >
1520const ast::Expr * ast::Pass< pass_t >::visit( const ast::DeletedExpr * node ) {
1521 VISIT_START( node );
1522
1523 VISIT({
1524 guard_symtab guard { *this };
1525 maybe_accept( node, &DeletedExpr::result );
1526 }
1527 maybe_accept( node, &DeletedExpr::expr );
1528 // don't visit deleteStmt, because it is a pointer to somewhere else in the tree.
1529 )
1530
1531 VISIT_END( Expr, node );
1532}
1533
1534//--------------------------------------------------------------------------
1535// DefaultArgExpr
1536template< typename pass_t >
1537const ast::Expr * ast::Pass< pass_t >::visit( const ast::DefaultArgExpr * node ) {
1538 VISIT_START( node );
1539
1540 VISIT({
1541 guard_symtab guard { *this };
1542 maybe_accept( node, &DefaultArgExpr::result );
1543 }
1544 maybe_accept( node, &DefaultArgExpr::expr );
1545 )
1546
1547 VISIT_END( Expr, node );
1548}
1549
1550//--------------------------------------------------------------------------
1551// GenericExpr
1552template< typename pass_t >
1553const ast::Expr * ast::Pass< pass_t >::visit( const ast::GenericExpr * node ) {
1554 VISIT_START( node );
1555
1556 VISIT({
1557 guard_symtab guard { *this };
1558 maybe_accept( node, &GenericExpr::result );
1559 }
1560 maybe_accept( node, &GenericExpr::control );
1561
1562 std::vector<GenericExpr::Association> new_kids;
1563 new_kids.reserve(node->associations.size());
1564 bool mutated = false;
1565 for( const auto & assoc : node->associations ) {
1566 const Type * type = nullptr;
1567 if( assoc.type ) {
1568 guard_symtab guard { *this };
1569 type = assoc.type->accept( *this );
1570 if( type != assoc.type ) mutated = true;
1571 }
1572 const Expr * expr = nullptr;
1573 if( assoc.expr ) {
1574 expr = assoc.expr->accept( *this );
1575 if( expr != assoc.expr ) mutated = true;
1576 }
1577 new_kids.emplace_back( type, expr );
1578 }
1579
1580 if(mutated) {
1581 auto n = mutate(node);
1582 n->associations = std::move( new_kids );
1583 node = n;
1584 }
1585 )
1586
1587 VISIT_END( Expr, node );
1588}
1589
1590//--------------------------------------------------------------------------
1591// VoidType
1592template< typename pass_t >
1593const ast::Type * ast::Pass< pass_t >::visit( const ast::VoidType * node ) {
1594 VISIT_START( node );
1595
1596 VISIT_END( Type, node );
1597}
1598
1599//--------------------------------------------------------------------------
1600// BasicType
1601template< typename pass_t >
1602const ast::Type * ast::Pass< pass_t >::visit( const ast::BasicType * node ) {
1603 VISIT_START( node );
1604
1605 VISIT_END( Type, node );
1606}
1607
1608//--------------------------------------------------------------------------
1609// PointerType
1610template< typename pass_t >
1611const ast::Type * ast::Pass< pass_t >::visit( const ast::PointerType * node ) {
1612 VISIT_START( node );
1613
1614 VISIT(
1615 // xxx - should PointerType visit/mutate dimension?
1616 maybe_accept( node, &PointerType::base );
1617 )
1618
1619 VISIT_END( Type, node );
1620}
1621
1622//--------------------------------------------------------------------------
1623// ArrayType
1624template< typename pass_t >
1625const ast::Type * ast::Pass< pass_t >::visit( const ast::ArrayType * node ) {
1626 VISIT_START( node );
1627
1628 VISIT(
1629 maybe_accept( node, &ArrayType::dimension );
1630 maybe_accept( node, &ArrayType::base );
1631 )
1632
1633 VISIT_END( Type, node );
1634}
1635
1636//--------------------------------------------------------------------------
1637// ReferenceType
1638template< typename pass_t >
1639const ast::Type * ast::Pass< pass_t >::visit( const ast::ReferenceType * node ) {
1640 VISIT_START( node );
1641
1642 VISIT(
1643 maybe_accept( node, &ReferenceType::base );
1644 )
1645
1646 VISIT_END( Type, node );
1647}
1648
1649//--------------------------------------------------------------------------
1650// QualifiedType
1651template< typename pass_t >
1652const ast::Type * ast::Pass< pass_t >::visit( const ast::QualifiedType * node ) {
1653 VISIT_START( node );
1654
1655 VISIT(
1656 maybe_accept( node, &QualifiedType::parent );
1657 maybe_accept( node, &QualifiedType::child );
1658 )
1659
1660 VISIT_END( Type, node );
1661}
1662
1663//--------------------------------------------------------------------------
1664// FunctionType
1665template< typename pass_t >
1666const ast::Type * ast::Pass< pass_t >::visit( const ast::FunctionType * node ) {
1667 VISIT_START( node );
1668
1669 VISIT(
1670 maybe_accept( node, &FunctionType::forall );
1671 maybe_accept( node, &FunctionType::returns );
1672 maybe_accept( node, &FunctionType::params );
1673 )
1674
1675 VISIT_END( Type, node );
1676}
1677
1678//--------------------------------------------------------------------------
1679// StructInstType
1680template< typename pass_t >
1681const ast::Type * ast::Pass< pass_t >::visit( const ast::StructInstType * node ) {
1682 VISIT_START( node );
1683
1684 __pass::symtab::addStruct( pass, 0, node->name );
1685
1686 VISIT({
1687 guard_symtab guard { *this };
1688 maybe_accept( node, &StructInstType::forall );
1689 maybe_accept( node, &StructInstType::params );
1690 })
1691
1692 VISIT_END( Type, node );
1693}
1694
1695//--------------------------------------------------------------------------
1696// UnionInstType
1697template< typename pass_t >
1698const ast::Type * ast::Pass< pass_t >::visit( const ast::UnionInstType * node ) {
1699 VISIT_START( node );
1700
1701 __pass::symtab::addStruct( pass, 0, node->name );
1702
1703 {
1704 guard_symtab guard { *this };
1705 maybe_accept( node, &UnionInstType::forall );
1706 maybe_accept( node, &UnionInstType::params );
1707 }
1708
1709 VISIT_END( Type, node );
1710}
1711
1712//--------------------------------------------------------------------------
1713// EnumInstType
1714template< typename pass_t >
1715const ast::Type * ast::Pass< pass_t >::visit( const ast::EnumInstType * node ) {
1716 VISIT_START( node );
1717
1718 VISIT(
1719 maybe_accept( node, &EnumInstType::forall );
1720 maybe_accept( node, &EnumInstType::params );
1721 )
1722
1723 VISIT_END( Type, node );
1724}
1725
1726//--------------------------------------------------------------------------
1727// TraitInstType
1728template< typename pass_t >
1729const ast::Type * ast::Pass< pass_t >::visit( const ast::TraitInstType * node ) {
1730 VISIT_START( node );
1731
1732 VISIT(
1733 maybe_accept( node, &TraitInstType::forall );
1734 maybe_accept( node, &TraitInstType::params );
1735 )
1736
1737 VISIT_END( Type, node );
1738}
1739
1740//--------------------------------------------------------------------------
1741// TypeInstType
1742template< typename pass_t >
1743const ast::Type * ast::Pass< pass_t >::visit( const ast::TypeInstType * node ) {
1744 VISIT_START( node );
1745
1746 VISIT(
1747 maybe_accept( node, &TypeInstType::forall );
1748 maybe_accept( node, &TypeInstType::params );
1749 )
1750
1751 VISIT_END( Type, node );
1752}
1753
1754//--------------------------------------------------------------------------
1755// TupleType
1756template< typename pass_t >
1757const ast::Type * ast::Pass< pass_t >::visit( const ast::TupleType * node ) {
1758 VISIT_START( node );
1759
1760 VISIT(
1761 maybe_accept( node, &TupleType::types );
1762 maybe_accept( node, &TupleType::members );
1763 )
1764
1765 VISIT_END( Type, node );
1766}
1767
1768//--------------------------------------------------------------------------
1769// TypeofType
1770template< typename pass_t >
1771const ast::Type * ast::Pass< pass_t >::visit( const ast::TypeofType * node ) {
1772 VISIT_START( node );
1773
1774 VISIT(
1775 maybe_accept( node, &TypeofType::expr );
1776 )
1777
1778 VISIT_END( Type, node );
1779}
1780
1781//--------------------------------------------------------------------------
1782// VarArgsType
1783template< typename pass_t >
1784const ast::Type * ast::Pass< pass_t >::visit( const ast::VarArgsType * node ) {
1785 VISIT_START( node );
1786
1787 VISIT_END( Type, node );
1788}
1789
1790//--------------------------------------------------------------------------
1791// ZeroType
1792template< typename pass_t >
1793const ast::Type * ast::Pass< pass_t >::visit( const ast::ZeroType * node ) {
1794 VISIT_START( node );
1795
1796 VISIT_END( Type, node );
1797}
1798
1799//--------------------------------------------------------------------------
1800// OneType
1801template< typename pass_t >
1802const ast::Type * ast::Pass< pass_t >::visit( const ast::OneType * node ) {
1803 VISIT_START( node );
1804
1805 VISIT_END( Type, node );
1806}
1807
1808//--------------------------------------------------------------------------
1809// GlobalScopeType
1810template< typename pass_t >
1811const ast::Type * ast::Pass< pass_t >::visit( const ast::GlobalScopeType * node ) {
1812 VISIT_START( node );
1813
1814 VISIT_END( Type, node );
1815}
1816
1817
1818//--------------------------------------------------------------------------
1819// Designation
1820template< typename pass_t >
1821const ast::Designation * ast::Pass< pass_t >::visit( const ast::Designation * node ) {
1822 VISIT_START( node );
1823
1824 VISIT( maybe_accept( node, &Designation::designators ); )
1825
1826 VISIT_END( Designation, node );
1827}
1828
1829//--------------------------------------------------------------------------
1830// SingleInit
1831template< typename pass_t >
1832const ast::Init * ast::Pass< pass_t >::visit( const ast::SingleInit * node ) {
1833 VISIT_START( node );
1834
1835 VISIT(
1836 maybe_accept( node, &SingleInit::value );
1837 )
1838
1839 VISIT_END( Init, node );
1840}
1841
1842//--------------------------------------------------------------------------
1843// ListInit
1844template< typename pass_t >
1845const ast::Init * ast::Pass< pass_t >::visit( const ast::ListInit * node ) {
1846 VISIT_START( node );
1847
1848 VISIT(
1849 maybe_accept( node, &ListInit::designations );
1850 maybe_accept( node, &ListInit::initializers );
1851 )
1852
1853 VISIT_END( Init, node );
1854}
1855
1856//--------------------------------------------------------------------------
1857// ConstructorInit
1858template< typename pass_t >
1859const ast::Init * ast::Pass< pass_t >::visit( const ast::ConstructorInit * node ) {
1860 VISIT_START( node );
1861
1862 VISIT(
1863 maybe_accept( node, &ConstructorInit::ctor );
1864 maybe_accept( node, &ConstructorInit::dtor );
1865 maybe_accept( node, &ConstructorInit::init );
1866 )
1867
1868 VISIT_END( Init, node );
1869}
1870
1871//--------------------------------------------------------------------------
1872// Attribute
1873template< typename pass_t >
1874const ast::Attribute * ast::Pass< pass_t >::visit( const ast::Attribute * node ) {
1875 VISIT_START( node );
1876
1877 VISIT(
1878 maybe_accept( node, &Attribute::params );
1879 )
1880
1881 VISIT_END( Attribute, node );
1882}
1883
1884//--------------------------------------------------------------------------
1885// TypeSubstitution
1886template< typename pass_t >
1887const ast::TypeSubstitution * ast::Pass< pass_t >::visit( const ast::TypeSubstitution * node ) {
1888 VISIT_START( node );
1889
1890 VISIT(
1891 {
1892 bool mutated = false;
1893 std::unordered_map< std::string, ast::ptr< ast::Type > > new_map;
1894 for ( const auto & p : node->typeEnv ) {
1895 guard_symtab guard { *this };
1896 auto new_node = p.second->accept( *this );
1897 if (new_node != p.second) mutated = false;
1898 new_map.insert({ p.first, new_node });
1899 }
1900 if (mutated) {
1901 auto new_node = mutate( node );
1902 new_node->typeEnv.swap( new_map );
1903 node = new_node;
1904 }
1905 }
1906
1907 {
1908 bool mutated = false;
1909 std::unordered_map< std::string, ast::ptr< ast::Expr > > new_map;
1910 for ( const auto & p : node->varEnv ) {
1911 guard_symtab guard { *this };
1912 auto new_node = p.second->accept( *this );
1913 if (new_node != p.second) mutated = false;
1914 new_map.insert({ p.first, new_node });
1915 }
1916 if (mutated) {
1917 auto new_node = mutate( node );
1918 new_node->varEnv.swap( new_map );
1919 node = new_node;
1920 }
1921 }
1922 )
1923
1924 VISIT_END( TypeSubstitution, node );
1925}
1926
1927#undef VISIT_START
1928#undef VISIT
1929#undef VISIT_END
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