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source: src/CodeTools/ResolvProtoDump.cc @ d42969d

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum

Last change on this file since d42969d was a2dbcff1, checked in by Thierry Delisle <tdelisle@…>, 6 years ago
Fixed warning and spacing
Property mode set to `100644`
File size: 22.5 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 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	// ResolvProtoDump.cc -- Translates CFA resolver instances into resolv-proto instances
8	//
9	// Author : Aaron Moss
10	// Created On : Tue Sep 11 09:04:00 2018
11	// Last Modified By : Aaron Moss
12	// Last Modified On : Tue Sep 11 09:04:00 2018
13	// Update Count : 1
14	//
15
16	#include <algorithm>
17	#include <cctype>
18	#include <iostream>
19	#include <memory>
20	#include <list>
21	#include <set>
22	#include <sstream>
23	#include <string>
24	#include <unordered_set>
25	#include <utility>
26	#include <vector>
27
28	#include "Common/PassVisitor.h"
29	#include "Common/utility.h"
30	#include "CodeGen/OperatorTable.h"
31	#include "SynTree/Declaration.h"
32	#include "SynTree/Expression.h"
33	#include "SynTree/Initializer.h"
34	#include "SynTree/Statement.h"
35	#include "SynTree/Type.h"
36
37	namespace CodeTools {
38
39	/// Visitor for dumping resolver prototype output
40	class ProtoDump : public WithShortCircuiting, public WithVisitorRef<ProtoDump> {
41	std::set<std::string> decls; ///< Declarations in this scope
42	std::vector<std::string> exprs; ///< Expressions in this scope
43	std::vector<ProtoDump> subs; ///< Sub-scopes
44	std::unordered_set<std::string> closed; ///< Closed type variables
45	const ProtoDump* parent; ///< Outer lexical scope
46	std::unique_ptr<Type> rtnType; ///< Return type for this scope
47
48	public:
49	/// Default constructor for root ProtoDump
50	ProtoDump() : decls(), exprs(), subs(), closed(), parent(nullptr), rtnType(nullptr) {}
51
52	/// Child constructor
53	ProtoDump(const ProtoDump* p, Type* r)
54	: decls(), exprs(), subs(), closed(p->closed), parent(p), rtnType(r) {}
55
56	// Fix copy issues
57	ProtoDump(const ProtoDump& o)
58	: decls(o.decls), exprs(o.exprs), subs(o.subs), closed(o.closed), parent(o.parent),
59	rtnType(maybeClone(o.rtnType.get())) {}
60	ProtoDump( ProtoDump&& ) = default;
61
62	ProtoDump& operator= (const ProtoDump& o) {
63	if ( this == &o ) return *this;
64
65	decls = o.decls;
66	exprs = o.exprs;
67	subs = o.subs;
68	closed = o.closed;
69	parent = o.parent;
70	rtnType.reset( maybeClone(o.rtnType.get()) );
71
72	return *this;
73	}
74	ProtoDump& operator= (ProtoDump&&) = delete;
75
76	private:
77	/// checks if this declaration is contained in the scope or one of its parents
78	bool hasDecl( const std::string& s ) const {
79	if ( decls.count( s ) ) return true;
80	if ( parent ) return parent->hasDecl( s );
81	return false;
82	}
83
84	/// adds a new declaration to this scope, providing it does not already exist
85	void addDecl( const std::string& s ) {
86	if ( ! hasDecl( s ) ) decls.insert( s );
87	}
88
89	/// adds a new expression to this scope
90	void addExpr( const std::string& s ) {
91	if ( ! s.empty() ) { exprs.emplace_back( s ); }
92	}
93
94	/// adds a new subscope to this scope, returning a reference
95	void addSub( PassVisitor<ProtoDump>&& sub ) {
96	subs.emplace_back( std::move(sub.pass) );
97	}
98
99	/// Whether lists should be separated, terminated, or preceded by their separator
100	enum septype { separated, terminated, preceded };
101
102	/// builds space-separated list of types
103	template<typename V>
104	static void build( V& visitor, const std::list< Type* >& tys, std::stringstream& ss,
105	septype mode = separated ) {
106	if ( tys.empty() ) return;
107
108	if ( mode == preceded ) { ss << ' '; }
109
110	auto it = tys.begin();
111	(*it)->accept( visitor );
112
113	while ( ++it != tys.end() ) {
114	ss << ' ';
115	(*it)->accept( visitor );
116	}
117
118	if ( mode == terminated ) { ss << ' '; }
119	}
120
121	/// builds list of types wrapped as tuple type
122	template<typename V>
123	static void buildAsTuple( V& visitor, const std::list< Type* >& tys,
124	std::stringstream& ss ) {
125	switch ( tys.size() ) {
126	case 0: ss << "#void"; break;
127	case 1: tys.front()->accept( visitor ); break;
128	default:
129	ss << "#$" << tys.size() << '<';
130	build( visitor, tys, ss );
131	ss << '>';
132	break;
133	}
134	}
135
136	/// gets types from DWT list
137	static std::list< Type* > from_decls( const std::list< DeclarationWithType* >& decls ) {
138	std::list< Type* > tys;
139	for ( auto decl : decls ) { tys.emplace_back( decl->get_type() ); }
140	return tys;
141	}
142
143	/// gets types from TypeExpr list
144	static std::list< Type* > from_exprs( const std::list< Expression* >& exprs ) {
145	std::list< Type* > tys;
146	for ( auto expr : exprs ) {
147	if ( TypeExpr* tyExpr = dynamic_cast<TypeExpr*>(expr) ) {
148	tys.emplace_back( tyExpr->type );
149	}
150	}
151	return tys;
152	}
153
154	/// builds prefixes for rp_name
155	static std::string new_prefix( const std::string& old, const char* added ) {
156	if ( old.empty() ) return std::string{"$"} + added;
157	return old + added;
158	}
159
160	/// shortens operator names
161	static void op_name( const std::string& name, std::stringstream& ss ) {
162	if ( name.compare( 0, 10, "_operator_" ) == 0 ) {
163	ss << name.substr(10);
164	} else if ( name.compare( "_constructor" ) == 0
165	\|\| name.compare( "_destructor" ) == 0 ) {
166	ss << name.substr(1);
167	} else if ( name.compare( 0, 11, "__operator_" ) == 0 ) {
168	ss << name.substr(11);
169	} else {
170	ss << name;
171	}
172	}
173
174	/// replaces operators with resolv-proto names
175	static void rp_name( const std::string& name, std::stringstream& ss,
176	std::string&& pre = "" ) {
177	// safety check for anonymous names
178	if ( name.empty() ) {
179	ss << new_prefix(pre, "anon");
180	return;
181	}
182
183	// replace operator names
184	CodeGen::OperatorInfo info;
185	if ( CodeGen::operatorLookup( name, info ) ) {
186	ss << new_prefix(pre, "");
187	op_name( info.outputName, ss );
188	return;
189	}
190
191	// replace retval names
192	if ( name.compare( 0, 8, "_retval_" ) == 0 ) {
193	ss << new_prefix(pre, "rtn_");
194	op_name( name.substr(8), ss );
195	return;
196	}
197
198	// default to just name, with first character in lowercase
199	ss << pre
200	<< (char)std::tolower( static_cast<unsigned char>(name[0]) )
201	<< (name.c_str() + 1);
202	}
203
204	/// ensures type inst names are uppercase
205	static void ti_name( const std::string& name, std::stringstream& ss ) {
206	// replace built-in wide character types with named types
207	if ( name == "char16_t" \|\| name == "char32_t" \|\| name == "wchar_t" ) {
208	ss << "#" << name;
209	return;
210	}
211
212	// strip leading underscore
213	unsigned i = 0;
214	while ( i < name.size() && name[i] == '_' ) { ++i; }
215	if ( i == name.size() ) {
216	ss << "Anon";
217	return;
218	}
219
220	std::string stripped = name.substr(i);
221	// strip trailing "_generic_" from autogen names (avoids some user-generation issues)
222	char generic[] = "_generic_"; size_t n_generic = sizeof(generic) - 1;
223	if ( stripped.size() >= n_generic
224	&& stripped.substr( stripped.size() - n_generic ) == generic ) {
225	stripped.resize( stripped.size() - n_generic );
226	}
227
228	// uppercase first character
229	ss << (char)std::toupper( static_cast<unsigned char>(stripped[0]) )
230	<< (stripped.c_str() + 1);
231	}
232
233	/// Visitor for printing types
234	struct TypePrinter : public WithShortCircuiting, WithVisitorRef<TypePrinter>, WithGuards {
235	std::stringstream& ss; ///< Output to print to
236	const std::unordered_set<std::string>& closed; ///< Closed type variables
237	unsigned depth; ///< Depth of nesting from root type
238
239	TypePrinter( const std::unordered_set<std::string>& closed, std::stringstream& ss )
240	: ss(ss), closed(closed), depth(0) {}
241
242	// basic type represented as integer type
243	// TODO maybe hard-code conversion graph and make named type
244	void previsit( BasicType* bt ) { ss << (int)bt->get_kind(); }
245
246	// pointers (except function pointers) represented as generic type
247	void previsit( PointerType* pt ) {
248	if ( ! dynamic_cast<FunctionType*>(pt->base) ) { ss << "#$ptr<"; ++depth; }
249	}
250	void postvisit( PointerType* pt ) {
251	if ( ! dynamic_cast<FunctionType*>(pt->base) ) { --depth; ss << '>'; }
252	}
253
254	// arrays represented as generic pointers
255	void previsit( ArrayType* at ) {
256	ss << "#$ptr<";
257	++depth;
258	at->base->accept( *visitor );
259	--depth;
260	ss << '>';
261	visit_children = false;
262	}
263
264	// ignore top-level reference types, they're mostly transparent to resolution
265	void previsit( ReferenceType* ) {
266	if ( depth > 0 ) { ss << "#$ref<"; }
267	++depth;
268	}
269	void postvisit( ReferenceType* ) {
270	--depth;
271	if ( depth > 0 ) { ss << '>'; }
272	}
273
274	// print function types using prototype syntax
275	void previsit( FunctionType* ft ) {
276	ss << '[';
277	++depth;
278	build( *visitor, from_decls( ft->returnVals ), ss, preceded );
279	ss << " : ";
280	build( *visitor, from_decls( ft->parameters ), ss, terminated );
281	--depth;
282	ss << ']';
283	visit_children = false;
284	}
285
286	private:
287	// prints aggregate type name as NamedType with optional paramters
288	void handleAggregate( ReferenceToType* at ) {
289	ss << '#' << at->name;
290	if ( ! at->parameters.empty() ) {
291	ss << '<';
292	++depth;
293	build( *visitor, from_exprs( at->parameters ), ss );
294	--depth;
295	ss << '>';
296	}
297	visit_children = false;
298	}
299
300	public:
301	// handle aggregate types using NamedType
302	void previsit( StructInstType* st ) { handleAggregate( st ); }
303	void previsit( UnionInstType* ut ) { handleAggregate( ut ); }
304
305	// replace enums with int
306	void previsit( EnumInstType* ) { ss << (int)BasicType::SignedInt; }
307
308	void previsit( TypeInstType* vt ) {
309	// print closed variables as named types
310	if ( closed.count( vt->name ) ) { ss << '#' << vt->name; }
311	// otherwise make sure first letter is capitalized
312	else { ti_name( vt->name, ss ); }
313	}
314
315	// flattens empty and singleton tuples
316	void previsit( TupleType* tt ) {
317	++depth;
318	buildAsTuple( *visitor, tt->types, ss );
319	--depth;
320	visit_children = false;
321	}
322
323	// TODO support variable args for functions
324	void previsit( VarArgsType* ) {
325	// only include varargs for top level (argument type)
326	if ( depth == 0 ) { ss << "#$varargs"; }
327	}
328
329	// replace 0 and 1 with int
330	// TODO support 0 and 1 with their proper type names and conversions
331	void previsit( ZeroType* ) { ss << (int)BasicType::SignedInt; }
332	void previsit( OneType* ) { ss << (int)BasicType::SignedInt; }
333
334	// only print void type if not at top level
335	void previsit( VoidType* ) {
336	if ( depth > 0 ) { ss << "#void"; }
337	}
338	};
339
340	/// builds description of function
341	void build( const std::string& name, FunctionType* fnTy, std::stringstream& ss ) {
342	PassVisitor<TypePrinter> printTy{ closed, ss };
343	// print return values
344	build( printTy, from_decls( fnTy->returnVals ), ss, terminated );
345	// print name
346	rp_name( name, ss );
347	// print parameters
348	build( printTy, from_decls( fnTy->parameters ), ss, preceded );
349	// print assertions
350	for ( TypeDecl* tyvar : fnTy->forall ) {
351	for ( DeclarationWithType* assn : tyvar->assertions ) {
352	ss << " \| ";
353	build( assn->name, assn->get_type(), ss );
354	}
355	}
356	}
357
358	/// builds description of a variable (falls back to function if function type)
359	void build( const std::string& name, Type* ty, std::stringstream& ss ) {
360	// ignore top-level references
361	Type *norefs = ty->stripReferences();
362
363	// fall back to function declaration if function type
364	if ( PointerType* pTy = dynamic_cast< PointerType* >(norefs) ) {
365	if ( FunctionType* fnTy = dynamic_cast< FunctionType* >(pTy->base) ) {
366	build( name, fnTy, ss );
367	return;
368	}
369	} else if ( FunctionType* fnTy = dynamic_cast< FunctionType* >(norefs) ) {
370	build( name, fnTy, ss );
371	return;
372	}
373
374	// print variable declaration in prototype syntax
375	PassVisitor<TypePrinter> printTy{ closed, ss };
376	norefs->accept( printTy );
377	ss << " &";
378	rp_name( name, ss );
379	}
380
381	/// builds description of a field access
382	void build( const std::string& name, AggregateDecl* agg, Type* ty, std::stringstream& ss ) {
383	// ignore top-level references
384	Type *norefs = ty->stripReferences();
385
386	// print access as new field name
387	PassVisitor<TypePrinter> printTy{ closed, ss };
388	norefs->accept( printTy );
389	ss << ' ';
390	rp_name( name, ss, "$field_" );
391	ss << " #" << agg->name;
392	// handle type parameters
393	if ( ! agg->parameters.empty() ) {
394	ss << '<';
395	auto it = agg->parameters.begin();
396	while (true) {
397	ti_name( (*it)->name, ss );
398	if ( ++it == agg->parameters.end() ) break;
399	ss << ' ';
400	}
401	ss << '>';
402	}
403	}
404
405	/// Visitor for printing expressions
406	struct ExprPrinter : WithShortCircuiting, WithVisitorRef<ExprPrinter> {
407	// TODO change interface to generate multiple expression candidates
408	const std::unordered_set<std::string>& closed; ///< set of closed type vars
409	std::stringstream& ss; ///< Output to print to
410
411	ExprPrinter( const std::unordered_set<std::string>& closed, std::stringstream& ss )
412	: closed(closed), ss(ss) {}
413
414	/// Names handled as name expressions
415	void previsit( NameExpr* expr ) {
416	ss << '&';
417	rp_name( expr->name, ss );
418	}
419
420	/// Handle already-resolved variables as type constants
421	void previsit( VariableExpr* expr ) {
422	PassVisitor<TypePrinter> tyPrinter{ closed, ss };
423	expr->var->get_type()->accept( tyPrinter );
424	visit_children = false;
425	}
426
427	/// Calls handled as calls
428	void previsit( UntypedExpr* expr ) {
429	// TODO handle name extraction more generally
430	NameExpr* name = dynamic_cast<NameExpr*>(expr->function);
431
432	// fall back on just resolving call to function name
433	// TODO incorporate function type into resolv-proto
434	if ( ! name ) {
435	expr->function->accept( *visitor );
436	visit_children = false;
437	return;
438	}
439
440	rp_name( name->name, ss );
441	if ( expr->args.empty() ) {
442	ss << "()";
443	} else {
444	ss << "( ";
445	auto it = expr->args.begin();
446	while (true) {
447	(it)->accept( visitor );
448	if ( ++it == expr->args.end() ) break;
449	ss << ' ';
450	}
451	ss << " )";
452	}
453	visit_children = false;
454	}
455
456	/// Already-resolved calls reduced to their type constant
457	void previsit( ApplicationExpr* expr ) {
458	PassVisitor<TypePrinter> tyPrinter{ closed, ss };
459	expr->result->accept( tyPrinter );
460	visit_children = false;
461	}
462
463	/// Address-of handled as operator
464	void previsit( AddressExpr* expr ) {
465	ss << "$addr( ";
466	expr->arg->accept( *visitor );
467	ss << " )";
468	visit_children = false;
469	}
470
471	/// Casts replaced with result type
472	/// TODO put cast target functions in, and add second expression for target
473	void previsit( CastExpr* cast ) {
474	PassVisitor<TypePrinter> tyPrinter{ closed, ss };
475	cast->result->accept( tyPrinter );
476	visit_children = false;
477	}
478
479	/// Member access handled as function from aggregate to member
480	void previsit( UntypedMemberExpr* expr ) {
481	// TODO handle name extraction more generally
482	NameExpr* name = dynamic_cast<NameExpr*>(expr->member);
483
484	// fall back on just resolving call to member name
485	// TODO incorporate function type into resolv-proto
486	if ( ! name ) {
487	expr->member->accept( *visitor );
488	visit_children = false;
489	return;
490	}
491
492	rp_name( name->name, ss, "$field_" );
493	ss << "( ";
494	expr->aggregate->accept( *visitor );
495	ss << " )";
496	visit_children = false;
497	}
498
499	/// Constant expression replaced by its type
500	void previsit( ConstantExpr* expr ) {
501	PassVisitor<TypePrinter> tyPrinter{ closed, ss };
502	expr->constant.get_type()->accept( tyPrinter );
503	visit_children = false;
504	}
505
506	/// sizeof( ... ), alignof( ... ), offsetof( ... ) replaced by unsigned long constant
507	/// TODO extra expression to resolve argument
508	void previsit( SizeofExpr* ) {
509	ss << (int)BasicType::LongUnsignedInt;
510	visit_children = false;
511	}
512	void previsit( AlignofExpr* ) {
513	ss << (int)BasicType::LongUnsignedInt;
514	visit_children = false;
515	}
516	void previsit( UntypedOffsetofExpr* ) {
517	ss << (int)BasicType::LongUnsignedInt;
518	visit_children = false;
519	}
520
521	/// Logical expressions represented as operators
522	void previsit( LogicalExpr* expr ) {
523	ss << '$' << ( expr->get_isAnd() ? "and" : "or" ) << "( ";
524	expr->arg1->accept( *visitor );
525	ss << ' ';
526	expr->arg2->accept( *visitor );
527	ss << " )";
528	visit_children = false;
529	}
530
531	/// Conditional expression represented as operator
532	void previsit( ConditionalExpr* expr ) {
533	ss << "$if( ";
534	expr->arg1->accept( *visitor );
535	ss << ' ';
536	expr->arg2->accept( *visitor );
537	ss << ' ';
538	expr->arg3->accept( *visitor );
539	ss << " )";
540	visit_children = false;
541	}
542
543	/// Comma expression represented as operator
544	void previsit( CommaExpr* expr ) {
545	ss << "$seq( ";
546	expr->arg1->accept( *visitor );
547	ss << ' ';
548	expr->arg2->accept( *visitor );
549	ss << " )";
550	visit_children = false;
551	}
552
553	// TODO handle ignored ImplicitCopyCtorExpr and below
554	};
555
556	void build( Initializer* init, std::stringstream& ss ) {
557	if ( SingleInit* si = dynamic_cast<SingleInit*>(init) ) {
558	PassVisitor<ExprPrinter> exprPrinter{ closed, ss };
559	si->value->accept( exprPrinter );
560	ss << ' ';
561	} else if ( ListInit* li = dynamic_cast<ListInit*>(init) ) {
562	for ( Initializer* it : li->initializers ) {
563	build( it, ss );
564	}
565	}
566	}
567
568	/// Adds an object initializer to the list of expressions
569	void build( const std::string& name, Initializer* init, std::stringstream& ss ) {
570	ss << "$constructor( &";
571	rp_name( name, ss );
572	ss << ' ';
573	build( init, ss );
574	ss << ')';
575	}
576
577	/// Adds a return expression to the list of expressions
578	void build( Type* rtnType, Expression* expr, std::stringstream& ss ) {
579	ss << "$constructor( ";
580	PassVisitor<TypePrinter> tyPrinter{ closed, ss };
581	rtnType->accept( tyPrinter );
582	ss << ' ';
583	PassVisitor<ExprPrinter> exprPrinter{ closed, ss };
584	expr->accept( exprPrinter );
585	ss << " )";
586	}
587
588	/// Adds all named declarations in a list to the local scope
589	void addAll( const std::list<DeclarationWithType*>& decls ) {
590	for ( auto decl : decls ) {
591	// skip anonymous decls
592	if ( decl->name.empty() ) continue;
593
594	// handle objects
595	if ( ObjectDecl* obj = dynamic_cast< ObjectDecl* >( decl ) ) {
596	previsit( obj );
597	}
598	}
599	}
600
601	/// encode field access as function
602	void addAggregateFields( AggregateDecl* agg ) {
603	// make field names functions
604	for ( Declaration* member : agg->members ) {
605	if ( ObjectDecl* obj = dynamic_cast< ObjectDecl* >(member) ) {
606	std::stringstream ss;
607	build( obj->name, agg, obj->type, ss );
608	addDecl( ss.str() );
609	}
610	}
611
612	visit_children = false;
613	}
614
615	public:
616	void previsit( ObjectDecl *obj ) {
617	// add variable as declaration
618	std::stringstream ss;
619	build( obj->name, obj->type, ss );
620	addDecl( ss.str() );
621
622	// add initializer as expression if applicable
623	if ( obj->init ) {
624	std::stringstream ss;
625	build( obj->name, obj->init, ss );
626	addExpr( ss.str() );
627	}
628	}
629
630	void previsit( FunctionDecl *decl ) {
631	// skip decls with ftype parameters
632	for ( TypeDecl* tyvar : decl->type->forall ) {
633	if ( tyvar->get_kind() == TypeDecl::Ftype ) {
634	visit_children = false;
635	return;
636	}
637	}
638
639	// add function as declaration
640	std::stringstream ss;
641	build( decl->name, decl->type, ss );
642	addDecl( ss.str() );
643
644	// add body if available
645	if ( decl->statements ) {
646	std::list<Type*> rtns = from_decls( decl->type->returnVals );
647	Type* rtn = nullptr;
648	if ( rtns.size() == 1 ) {
649	if ( ! dynamic_cast<VoidType*>(rtns.front()) ) rtn = rtns.front()->clone();
650	} else if ( rtns.size() > 1 ) {
651	rtn = new TupleType{ Type::Qualifiers{}, rtns };
652	}
653	PassVisitor<ProtoDump> body{ this, rtn };
654
655	for ( TypeDecl* tyvar : decl->type->forall ) {
656	// add set of "closed" types to body so that it can print them as NamedType
657	body.pass.closed.insert( tyvar->name );
658
659	// add assertions to local scope as declarations as well
660	for ( DeclarationWithType* assn : tyvar->assertions ) {
661	assn->accept( body );
662	}
663	}
664
665	// add named parameters and returns to local scope
666	body.pass.addAll( decl->type->returnVals );
667	body.pass.addAll( decl->type->parameters );
668
669	// add contents of function to new scope
670	decl->statements->accept( body );
671
672	// store sub-scope
673	addSub( std::move(body) );
674	}
675
676	visit_children = false;
677	}
678
679	void previsit( StructDecl* sd ) { addAggregateFields(sd); }
680	void previsit( UnionDecl* ud ) { addAggregateFields(ud); }
681
682	void previsit( EnumDecl* ed ) {
683	std::unique_ptr<Type> eType =
684	std::make_unique<BasicType>( Type::Qualifiers{}, BasicType::SignedInt );
685
686	// add field names directly to enclosing scope
687	for ( Declaration* member : ed->members ) {
688	if ( ObjectDecl* obj = dynamic_cast< ObjectDecl* >(member) ) {
689	previsit(obj);
690	}
691	}
692
693	visit_children = false;
694	}
695
696	void previsit( ReturnStmt* stmt ) {
697	// do nothing for void-returning functions or statements returning nothing
698	if ( ! rtnType \|\| ! stmt->expr ) return;
699
700	// otherwise construct the return type from the expression
701	std::stringstream ss;
702	build( rtnType.get(), stmt->expr, ss );
703	addExpr( ss.str() );
704	visit_children = false;
705	}
706
707	void previsit( AsmStmt* ) {
708	// skip asm statements
709	visit_children = false;
710	}
711
712	void previsit( Expression* expr ) {
713	std::stringstream ss;
714	PassVisitor<ExprPrinter> exPrinter{ closed, ss };
715	expr->accept( exPrinter );
716	addExpr( ss.str() );
717	visit_children = false;
718	}
719
720	/// Print non-prelude global declarations for resolv proto
721	void printGlobals() const {
722	std::cout << "#$ptr<T> $addr T" << std::endl; // &?
723	int i = (int)BasicType::SignedInt;
724	std::cout << i << " $and " << i << ' ' << i << std::endl; // ?&&?
725	std::cout << i << " $or " << i << ' ' << i << std::endl; // ?\|\|?
726	std::cout << "T $if " << i << " T T" << std::endl; // ternary operator
727	std::cout << "T $seq X T" << std::endl; // ?,?
728	}
729
730	public:
731	/// Prints this ProtoDump instance
732	void print(unsigned indent = 0) const {
733	// print globals at root level
734	if ( ! parent ) printGlobals();
735	// print decls
736	std::string tab( indent, '\t' );
737	for ( const std::string& d : decls ) {
738	std::cout << tab << d << std::endl;
739	}
740	// print divider
741	std::cout << '\n' << tab << "%%\n" << std::endl;
742	// print top-level expressions
743	for ( const std::string& e : exprs ) {
744	std::cout << tab << e << std::endl;
745	}
746	// print child scopes
747	++indent;
748	for ( const PassVisitor<ProtoDump>& s : subs ) {
749	std::cout << tab << '{' << std::endl;
750	s.pass.print( indent );
751	std::cout << tab << '}' << std::endl;
752	}
753	}
754	};
755
756	void dumpAsResolvProto( std::list< Declaration * > &translationUnit ) {
757	PassVisitor<ProtoDump> dump;
758	acceptAll( translationUnit, dump );
759	dump.pass.print();
760	}
761
762	} // namespace CodeTools
763
764	// Local Variables: //
765	// tab-width: 4 //
766	// mode: c++ //
767	// compile-command: "make install" //
768	// End: //

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