source: src/SymTab/Indexer.cc@ ed94eac

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new string with_gc
Last change on this file since ed94eac was ae4c85a, checked in by Rob Schluntz <rschlunt@…>, 10 years ago

fix function type parameter names leaking into the enclosing scope, first attempt
  • Property mode set to 100644
File size: 12.3 KB
Line 
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// Indexer.cc --
8//
9// Author : Richard C. Bilson
10// Created On : Sun May 17 21:37:33 2015
11// Last Modified By : Rob Schluntz
12// Last Modified On : Wed Aug 05 13:52:42 2015
13// Update Count : 10
14//
15
16#include "SynTree/Declaration.h"
17#include "SynTree/Type.h"
18#include "SynTree/Expression.h"
19#include "SynTree/Initializer.h"
20#include "SynTree/Statement.h"
21#include "Indexer.h"
22#include <typeinfo>
23#include "utility.h"
24
25#define debugPrint(x) if ( doDebug ) { std::cout << x; }
26
27namespace SymTab {
28 template< typename Container, typename VisitorType >
29 inline void acceptAllNewScope( Container &container, VisitorType &visitor ) {
30 visitor.enterScope();
31 acceptAll( container, visitor );
32 visitor.leaveScope();
33 }
34
35 Indexer::Indexer( bool useDebug ) : doDebug( useDebug ) {}
36
37 Indexer::~Indexer() {}
38
39 void Indexer::visit( ObjectDecl *objectDecl ) {
40 enterScope();
41 maybeAccept( objectDecl->get_type(), *this );
42 leaveScope();
43 maybeAccept( objectDecl->get_init(), *this );
44 maybeAccept( objectDecl->get_bitfieldWidth(), *this );
45 if ( objectDecl->get_name() != "" ) {
46 debugPrint( "Adding object " << objectDecl->get_name() << std::endl );
47 idTable.addDecl( objectDecl );
48 } // if
49 }
50
51 void Indexer::visit( FunctionDecl *functionDecl ) {
52 if ( functionDecl->get_name() == "" ) return;
53 debugPrint( "Adding function " << functionDecl->get_name() << std::endl );
54 idTable.addDecl( functionDecl );
55 enterScope();
56 maybeAccept( functionDecl->get_functionType(), *this );
57 acceptAll( functionDecl->get_oldDecls(), *this );
58 maybeAccept( functionDecl->get_statements(), *this );
59 leaveScope();
60 }
61
62
63// A NOTE ON THE ORDER OF TRAVERSAL
64//
65// Types and typedefs have their base types visited before they are added to the type table. This is ok, since there is
66// no such thing as a recursive type or typedef.
67//
68// typedef struct { T *x; } T; // never allowed
69//
70// for structs/unions, it is possible to have recursion, so the decl should be added as if it's incomplete to begin, the
71// members are traversed, and then the complete type should be added (assuming the type is completed by this particular
72// declaration).
73//
74// struct T { struct T *x; }; // allowed
75//
76// It is important to add the complete type to the symbol table *after* the members/base has been traversed, since that
77// traversal may modify the definition of the type and these modifications should be visible when the symbol table is
78// queried later in this pass.
79//
80// TODO: figure out whether recursive contexts are sensible/possible/reasonable.
81
82
83 void Indexer::visit( TypeDecl *typeDecl ) {
84 // see A NOTE ON THE ORDER OF TRAVERSAL, above
85 // note that assertions come after the type is added to the symtab, since they are not part of the type proper
86 // and may depend on the type itself
87 enterScope();
88 acceptAll( typeDecl->get_parameters(), *this );
89 maybeAccept( typeDecl->get_base(), *this );
90 leaveScope();
91 debugPrint( "Adding type " << typeDecl->get_name() << std::endl );
92 typeTable.add( typeDecl );
93 acceptAll( typeDecl->get_assertions(), *this );
94 }
95
96 void Indexer::visit( TypedefDecl *typeDecl ) {
97 enterScope();
98 acceptAll( typeDecl->get_parameters(), *this );
99 maybeAccept( typeDecl->get_base(), *this );
100 leaveScope();
101 debugPrint( "Adding typedef " << typeDecl->get_name() << std::endl );
102 typeTable.add( typeDecl );
103 }
104
105 void Indexer::visit( StructDecl *aggregateDecl ) {
106 // make up a forward declaration and add it before processing the members
107 StructDecl fwdDecl( aggregateDecl->get_name() );
108 cloneAll( aggregateDecl->get_parameters(), fwdDecl.get_parameters() );
109 debugPrint( "Adding fwd decl for struct " << fwdDecl.get_name() << std::endl );
110 structTable.add( &fwdDecl );
111
112 enterScope();
113 acceptAll( aggregateDecl->get_parameters(), *this );
114 acceptAll( aggregateDecl->get_members(), *this );
115 leaveScope();
116
117 debugPrint( "Adding struct " << aggregateDecl->get_name() << std::endl );
118 // this addition replaces the forward declaration
119 structTable.add( aggregateDecl );
120 }
121
122 void Indexer::visit( UnionDecl *aggregateDecl ) {
123 // make up a forward declaration and add it before processing the members
124 UnionDecl fwdDecl( aggregateDecl->get_name() );
125 cloneAll( aggregateDecl->get_parameters(), fwdDecl.get_parameters() );
126 debugPrint( "Adding fwd decl for union " << fwdDecl.get_name() << std::endl );
127 unionTable.add( &fwdDecl );
128
129 enterScope();
130 acceptAll( aggregateDecl->get_parameters(), *this );
131 acceptAll( aggregateDecl->get_members(), *this );
132 leaveScope();
133
134 debugPrint( "Adding union " << aggregateDecl->get_name() << std::endl );
135 unionTable.add( aggregateDecl );
136 }
137
138 void Indexer::visit( EnumDecl *aggregateDecl ) {
139 debugPrint( "Adding enum " << aggregateDecl->get_name() << std::endl );
140 enumTable.add( aggregateDecl );
141 // unlike structs, contexts, and unions, enums inject their members into the global scope
142 acceptAll( aggregateDecl->get_members(), *this );
143 }
144
145 void Indexer::visit( ContextDecl *aggregateDecl ) {
146 enterScope();
147 acceptAll( aggregateDecl->get_parameters(), *this );
148 acceptAll( aggregateDecl->get_members(), *this );
149 leaveScope();
150
151 debugPrint( "Adding context " << aggregateDecl->get_name() << std::endl );
152 contextTable.add( aggregateDecl );
153 }
154
155 void Indexer::visit( CompoundStmt *compoundStmt ) {
156 enterScope();
157 acceptAll( compoundStmt->get_kids(), *this );
158 leaveScope();
159 }
160
161
162 void Indexer::visit( ApplicationExpr *applicationExpr ) {
163 acceptAllNewScope( applicationExpr->get_results(), *this );
164 maybeAccept( applicationExpr->get_function(), *this );
165 acceptAll( applicationExpr->get_args(), *this );
166 }
167
168 void Indexer::visit( UntypedExpr *untypedExpr ) {
169 acceptAllNewScope( untypedExpr->get_results(), *this );
170 acceptAll( untypedExpr->get_args(), *this );
171 }
172
173 void Indexer::visit( NameExpr *nameExpr ) {
174 acceptAllNewScope( nameExpr->get_results(), *this );
175 }
176
177 void Indexer::visit( AddressExpr *addressExpr ) {
178 acceptAllNewScope( addressExpr->get_results(), *this );
179 maybeAccept( addressExpr->get_arg(), *this );
180 }
181
182 void Indexer::visit( LabelAddressExpr *labAddressExpr ) {
183 acceptAllNewScope( labAddressExpr->get_results(), *this );
184 maybeAccept( labAddressExpr->get_arg(), *this );
185 }
186
187 void Indexer::visit( CastExpr *castExpr ) {
188 acceptAllNewScope( castExpr->get_results(), *this );
189 maybeAccept( castExpr->get_arg(), *this );
190 }
191
192 void Indexer::visit( UntypedMemberExpr *memberExpr ) {
193 acceptAllNewScope( memberExpr->get_results(), *this );
194 maybeAccept( memberExpr->get_aggregate(), *this );
195 }
196
197 void Indexer::visit( MemberExpr *memberExpr ) {
198 acceptAllNewScope( memberExpr->get_results(), *this );
199 maybeAccept( memberExpr->get_aggregate(), *this );
200 }
201
202 void Indexer::visit( VariableExpr *variableExpr ) {
203 acceptAllNewScope( variableExpr->get_results(), *this );
204 }
205
206 void Indexer::visit( ConstantExpr *constantExpr ) {
207 acceptAllNewScope( constantExpr->get_results(), *this );
208 maybeAccept( constantExpr->get_constant(), *this );
209 }
210
211 void Indexer::visit( SizeofExpr *sizeofExpr ) {
212 acceptAllNewScope( sizeofExpr->get_results(), *this );
213 if ( sizeofExpr->get_isType() ) {
214 maybeAccept( sizeofExpr->get_type(), *this );
215 } else {
216 maybeAccept( sizeofExpr->get_expr(), *this );
217 }
218 }
219
220 void Indexer::visit( AttrExpr *attrExpr ) {
221 acceptAllNewScope( attrExpr->get_results(), *this );
222 if ( attrExpr->get_isType() ) {
223 maybeAccept( attrExpr->get_type(), *this );
224 } else {
225 maybeAccept( attrExpr->get_expr(), *this );
226 }
227 }
228
229 void Indexer::visit( LogicalExpr *logicalExpr ) {
230 acceptAllNewScope( logicalExpr->get_results(), *this );
231 maybeAccept( logicalExpr->get_arg1(), *this );
232 maybeAccept( logicalExpr->get_arg2(), *this );
233 }
234
235 void Indexer::visit( ConditionalExpr *conditionalExpr ) {
236 acceptAllNewScope( conditionalExpr->get_results(), *this );
237 maybeAccept( conditionalExpr->get_arg1(), *this );
238 maybeAccept( conditionalExpr->get_arg2(), *this );
239 maybeAccept( conditionalExpr->get_arg3(), *this );
240 }
241
242 void Indexer::visit( CommaExpr *commaExpr ) {
243 acceptAllNewScope( commaExpr->get_results(), *this );
244 maybeAccept( commaExpr->get_arg1(), *this );
245 maybeAccept( commaExpr->get_arg2(), *this );
246 }
247
248 void Indexer::visit( TupleExpr *tupleExpr ) {
249 acceptAllNewScope( tupleExpr->get_results(), *this );
250 acceptAll( tupleExpr->get_exprs(), *this );
251 }
252
253 void Indexer::visit( SolvedTupleExpr *tupleExpr ) {
254 acceptAllNewScope( tupleExpr->get_results(), *this );
255 acceptAll( tupleExpr->get_exprs(), *this );
256 }
257
258 void Indexer::visit( TypeExpr *typeExpr ) {
259 acceptAllNewScope( typeExpr->get_results(), *this );
260 maybeAccept( typeExpr->get_type(), *this );
261 }
262
263 void Indexer::visit( AsmExpr *asmExpr ) {
264 maybeAccept( asmExpr->get_inout(), *this );
265 maybeAccept( asmExpr->get_constraint(), *this );
266 maybeAccept( asmExpr->get_operand(), *this );
267 }
268
269 void Indexer::visit( UntypedValofExpr *valofExpr ) {
270 acceptAllNewScope( valofExpr->get_results(), *this );
271 maybeAccept( valofExpr->get_body(), *this );
272 }
273
274
275 void Indexer::visit( ContextInstType *contextInst ) {
276 acceptAll( contextInst->get_parameters(), *this );
277 acceptAll( contextInst->get_members(), *this );
278 }
279
280 void Indexer::visit( StructInstType *structInst ) {
281 if ( ! structTable.lookup( structInst->get_name() ) ) {
282 debugPrint( "Adding struct " << structInst->get_name() << " from implicit forward declaration" << std::endl );
283 structTable.add( structInst->get_name() );
284 }
285 enterScope();
286 acceptAll( structInst->get_parameters(), *this );
287 leaveScope();
288 }
289
290 void Indexer::visit( UnionInstType *unionInst ) {
291 if ( ! unionTable.lookup( unionInst->get_name() ) ) {
292 debugPrint( "Adding union " << unionInst->get_name() << " from implicit forward declaration" << std::endl );
293 unionTable.add( unionInst->get_name() );
294 }
295 enterScope();
296 acceptAll( unionInst->get_parameters(), *this );
297 leaveScope();
298 }
299
300 void Indexer::visit( ForStmt *forStmt ) {
301 // for statements introduce a level of scope
302 enterScope();
303 Visitor::visit( forStmt );
304 leaveScope();
305 }
306
307
308 void Indexer::lookupId( const std::string &id, std::list< DeclarationWithType* > &list ) const {
309 idTable.lookupId( id, list );
310 }
311
312 DeclarationWithType* Indexer::lookupId( const std::string &id) const {
313 return idTable.lookupId(id);
314 }
315
316 NamedTypeDecl *Indexer::lookupType( const std::string &id ) const {
317 return typeTable.lookup( id );
318 }
319
320 StructDecl *Indexer::lookupStruct( const std::string &id ) const {
321 return structTable.lookup( id );
322 }
323
324 EnumDecl *Indexer::lookupEnum( const std::string &id ) const {
325 return enumTable.lookup( id );
326 }
327
328 UnionDecl *Indexer::lookupUnion( const std::string &id ) const {
329 return unionTable.lookup( id );
330 }
331
332 ContextDecl * Indexer::lookupContext( const std::string &id ) const {
333 return contextTable.lookup( id );
334 }
335
336 void Indexer::enterScope() {
337 if ( doDebug ) {
338 std::cout << "--- Entering scope" << std::endl;
339 }
340 idTable.enterScope();
341 typeTable.enterScope();
342 structTable.enterScope();
343 enumTable.enterScope();
344 unionTable.enterScope();
345 contextTable.enterScope();
346 }
347
348 void Indexer::leaveScope() {
349 using std::cout;
350 using std::endl;
351
352 if ( doDebug ) {
353 cout << "--- Leaving scope containing" << endl;
354 idTable.dump( cout );
355 typeTable.dump( cout );
356 structTable.dump( cout );
357 enumTable.dump( cout );
358 unionTable.dump( cout );
359 contextTable.dump( cout );
360 }
361 idTable.leaveScope();
362 typeTable.leaveScope();
363 structTable.leaveScope();
364 enumTable.leaveScope();
365 unionTable.leaveScope();
366 contextTable.leaveScope();
367 }
368
369 void Indexer::print( std::ostream &os, int indent ) const {
370 using std::cerr;
371 using std::endl;
372
373 cerr << "===idTable===" << endl;
374 idTable.dump( os );
375 cerr << "===typeTable===" << endl;
376 typeTable.dump( os );
377 cerr << "===structTable===" << endl;
378 structTable.dump( os );
379 cerr << "===enumTable===" << endl;
380 enumTable.dump( os );
381 cerr << "===unionTable===" << endl;
382 unionTable.dump( os );
383 cerr << "===contextTable===" << endl;
384 contextTable.dump( os );
385#if 0
386 idTable.dump( os );
387 typeTable.dump( os );
388 structTable.dump( os );
389 enumTable.dump( os );
390 unionTable.dump( os );
391 contextTable.dump( os );
392#endif
393 }
394} // namespace SymTab
395
396// Local Variables: //
397// tab-width: 4 //
398// mode: c++ //
399// compile-command: "make install" //
400// End: //
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