CheckDeclaration.cpp 30.4 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2
3
4
**
** This file is part of Qt Creator
**
5
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
9
** Commercial Usage
10
**
11
12
13
14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18
19
20
21
22
23
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24
**
25
** If you are unsure which license is appropriate for your use, please
hjk's avatar
hjk committed
26
** contact the sales department at http://qt.nokia.com/contact.
con's avatar
con committed
27
**
28
**************************************************************************/
con's avatar
con committed
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "CheckDeclaration.h"
#include "Semantic.h"
#include "AST.h"
#include "TranslationUnit.h"
#include "Scope.h"
#include "Names.h"
#include "CoreTypes.h"
#include "Symbols.h"
#include "Control.h"
58
#include "Literals.h"
59
#include <string>
con's avatar
con committed
60
61
#include <cassert>

Roberto Raggi's avatar
Roberto Raggi committed
62
using namespace CPlusPlus;
con's avatar
con committed
63
64
65
66
67
68
69
70
71
72
73
74
75

CheckDeclaration::CheckDeclaration(Semantic *semantic)
    : SemanticCheck(semantic),
      _declaration(0),
      _scope(0),
      _templateParameters(0),
      _checkAnonymousArguments(false)
{ }

CheckDeclaration::~CheckDeclaration()
{ }

void CheckDeclaration::check(DeclarationAST *declaration,
76
                             Scope *scope, TemplateParameters *templateParameters)
con's avatar
con committed
77
78
{
    Scope *previousScope = switchScope(scope);
79
    TemplateParameters *previousTemplateParameters = switchTemplateParameters(templateParameters);
con's avatar
con committed
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
    DeclarationAST *previousDeclaration = switchDeclaration(declaration);
    accept(declaration);
    (void) switchDeclaration(previousDeclaration);
    (void) switchTemplateParameters(previousTemplateParameters);
    (void) switchScope(previousScope);
}

DeclarationAST *CheckDeclaration::switchDeclaration(DeclarationAST *declaration)
{
    DeclarationAST *previousDeclaration = _declaration;
    _declaration = declaration;
    return previousDeclaration;
}

Scope *CheckDeclaration::switchScope(Scope *scope)
{
    Scope *previousScope = _scope;
    _scope = scope;
    return previousScope;
}

101
TemplateParameters *CheckDeclaration::switchTemplateParameters(TemplateParameters *templateParameters)
con's avatar
con committed
102
{
103
    TemplateParameters *previousTemplateParameters = _templateParameters;
con's avatar
con committed
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
    _templateParameters = templateParameters;
    return previousTemplateParameters;
}

void CheckDeclaration::checkFunctionArguments(Function *fun)
{
    if (! _checkAnonymousArguments)
        return;

    if (_scope->isClassScope() && fun->isPublic()) {
        for (unsigned argc = 0; argc < fun->argumentCount(); ++argc) {
            Argument *arg = fun->argumentAt(argc)->asArgument();
            assert(arg != 0);

            if (! arg->name()) {
                translationUnit()->warning(arg->sourceLocation(),
                                           "anonymous argument");
            }
        }
    }
}

126
127
128
129
130
131
132
133
134
135
136
137
unsigned CheckDeclaration::locationOfDeclaratorId(DeclaratorAST *declarator) const
{
    if (declarator && declarator->core_declarator) {
        if (DeclaratorIdAST *declaratorId = declarator->core_declarator->asDeclaratorId())
            return declaratorId->firstToken();
        else if (NestedDeclaratorAST *nested = declarator->core_declarator->asNestedDeclarator())
            return locationOfDeclaratorId(nested->declarator);
    }

    return 0;
}

con's avatar
con committed
138
139
bool CheckDeclaration::visit(SimpleDeclarationAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
140
    FullySpecifiedType ty = semantic()->check(ast->decl_specifier_list, _scope);
con's avatar
con committed
141
142
    FullySpecifiedType qualTy = ty.qualifiedType();

143
144
    if (_templateParameters && ty) {
        if (Class *klass = ty->asClassType()) {
con's avatar
con committed
145
146
147
148
            klass->setTemplateParameters(_templateParameters);
        }
    }

Roberto Raggi's avatar
Roberto Raggi committed
149
150
    if (! ast->declarator_list && ast->decl_specifier_list && ! ast->decl_specifier_list->next) {
        if (ElaboratedTypeSpecifierAST *elab_type_spec = ast->decl_specifier_list->value->asElaboratedTypeSpecifier()) {
151
152
153
154
155
156

            unsigned sourceLocation = elab_type_spec->firstToken();

            if (elab_type_spec->name)
                sourceLocation = elab_type_spec->name->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
157
            const Name *name = semantic()->check(elab_type_spec->name, _scope);
158
            ForwardClassDeclaration *symbol =
159
                    control()->newForwardClassDeclaration(sourceLocation, name);
160
161
162
163
164
165
166
167
168
169
170

            if (_templateParameters) {
                symbol->setTemplateParameters(_templateParameters);
                _templateParameters = 0;
            }

            _scope->enterSymbol(symbol);
            return false;
        }
    }

171
172
    const bool isQ_SLOT   = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_SLOT;
    const bool isQ_SIGNAL = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_SIGNAL;
173
    const bool isQ_INVOKABLE = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_INVOKABLE;
174

Roberto Raggi's avatar
Roberto Raggi committed
175
    List<Declaration *> **decl_it = &ast->symbols;
Roberto Raggi's avatar
Roberto Raggi committed
176
    for (DeclaratorListAST *it = ast->declarator_list; it; it = it->next) {
Roberto Raggi's avatar
Roberto Raggi committed
177
        const Name *name = 0;
Roberto Raggi's avatar
Roberto Raggi committed
178
        FullySpecifiedType declTy = semantic()->check(it->value, qualTy,
con's avatar
con committed
179
180
                                                      _scope, &name);

Roberto Raggi's avatar
Roberto Raggi committed
181
        unsigned location = locationOfDeclaratorId(it->value);
182
        if (! location) {
Roberto Raggi's avatar
Roberto Raggi committed
183
184
            if (it->value)
                location = it->value->firstToken();
185
186
187
            else
                location = ast->firstToken();
        }
188

189
190
        Function *fun = 0;
        if (declTy && 0 != (fun = declTy->asFunctionType())) {
191
            fun->setSourceLocation(location);
con's avatar
con committed
192
193
194
            fun->setScope(_scope);
            fun->setName(name);
            fun->setMethodKey(semantic()->currentMethodKey());
195
            fun->setVirtual(ty.isVirtual());
196
197
198
199
            if (isQ_SIGNAL)
                fun->setMethodKey(Function::SignalMethod);
            else if (isQ_SLOT)
                fun->setMethodKey(Function::SlotMethod);
200
            else if (isQ_INVOKABLE)
201
                fun->setMethodKey(Function::InvokableMethod);
con's avatar
con committed
202
203
204
205
206
207
208
            fun->setVisibility(semantic()->currentVisibility());
        } else if (semantic()->currentMethodKey() != Function::NormalMethod) {
            translationUnit()->warning(ast->firstToken(),
                                       "expected a function declaration");
        }

        Declaration *symbol = control()->newDeclaration(location, name);
209
210
211
        symbol->setStartOffset(tokenAt(ast->firstToken()).offset);
        symbol->setEndOffset(tokenAt(ast->lastToken()).offset);

con's avatar
con committed
212
213
214
        symbol->setType(control()->integerType(IntegerType::Int));
        symbol->setType(declTy);

Roberto Raggi's avatar
Roberto Raggi committed
215
        if (_templateParameters && it == ast->declarator_list && ty && ! ty->isClassType())
con's avatar
con committed
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
            symbol->setTemplateParameters(_templateParameters);

        symbol->setVisibility(semantic()->currentVisibility());

        if (ty.isFriend())
            symbol->setStorage(Symbol::Friend);
        else if (ty.isRegister())
            symbol->setStorage(Symbol::Register);
        else if (ty.isStatic())
            symbol->setStorage(Symbol::Static);
        else if (ty.isExtern())
            symbol->setStorage(Symbol::Extern);
        else if (ty.isMutable())
            symbol->setStorage(Symbol::Mutable);
        else if (ty.isTypedef())
            symbol->setStorage(Symbol::Typedef);

Roberto Raggi's avatar
Roberto Raggi committed
233
234
        if (it->value && it->value->initializer) {
            FullySpecifiedType initTy = semantic()->check(it->value->initializer, _scope);
235
236
        }

Roberto Raggi's avatar
Roberto Raggi committed
237
238
239
240
        *decl_it = new (translationUnit()->memoryPool()) List<Declaration *>();
        (*decl_it)->value = symbol;
        decl_it = &(*decl_it)->next;

con's avatar
con committed
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
        _scope->enterSymbol(symbol);
    }
    return false;
}

bool CheckDeclaration::visit(EmptyDeclarationAST *)
{
    return false;
}

bool CheckDeclaration::visit(AccessDeclarationAST *ast)
{
    int accessSpecifier = tokenKind(ast->access_specifier_token);
    int visibility = semantic()->visibilityForAccessSpecifier(accessSpecifier);
    semantic()->switchVisibility(visibility);
    if (ast->slots_token)
        semantic()->switchMethodKey(Function::SlotMethod);
258
    else if (accessSpecifier == T_Q_SIGNALS)
con's avatar
con committed
259
260
261
262
263
264
265
266
267
268
269
        semantic()->switchMethodKey(Function::SignalMethod);
    else
        semantic()->switchMethodKey(Function::NormalMethod);
    return false;
}

bool CheckDeclaration::visit(AsmDefinitionAST *)
{
    return false;
}

270
bool CheckDeclaration::visit(ExceptionDeclarationAST *ast)
con's avatar
con committed
271
{
Roberto Raggi's avatar
Roberto Raggi committed
272
    FullySpecifiedType ty = semantic()->check(ast->type_specifier_list, _scope);
273
274
    FullySpecifiedType qualTy = ty.qualifiedType();

Roberto Raggi's avatar
Roberto Raggi committed
275
    const Name *name = 0;
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
    FullySpecifiedType declTy = semantic()->check(ast->declarator, qualTy,
                                                  _scope, &name);

    unsigned location = locationOfDeclaratorId(ast->declarator);
    if (! location) {
        if (ast->declarator)
            location = ast->declarator->firstToken();
        else
            location = ast->firstToken();
    }

    Declaration *symbol = control()->newDeclaration(location, name);
    symbol->setStartOffset(tokenAt(ast->firstToken()).offset);
    symbol->setEndOffset(tokenAt(ast->lastToken()).offset);
    symbol->setType(declTy);
    _scope->enterSymbol(symbol);

con's avatar
con committed
293
294
295
296
297
    return false;
}

bool CheckDeclaration::visit(FunctionDefinitionAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
298
    FullySpecifiedType ty = semantic()->check(ast->decl_specifier_list, _scope);
con's avatar
con committed
299
    FullySpecifiedType qualTy = ty.qualifiedType();
Roberto Raggi's avatar
Roberto Raggi committed
300
    const Name *name = 0;
con's avatar
con committed
301
302
    FullySpecifiedType funTy = semantic()->check(ast->declarator, qualTy,
                                                 _scope, &name);
303
    if (! (funTy && funTy->isFunctionType())) {
con's avatar
con committed
304
305
306
307
308
        translationUnit()->error(ast->firstToken(),
                                 "expected a function prototype");
        return false;
    }

309
    Function *fun = funTy->asFunctionType();
310
    fun->setVirtual(ty.isVirtual());
311
312
    fun->setStartOffset(tokenAt(ast->firstToken()).offset);
    fun->setEndOffset(tokenAt(ast->lastToken()).offset);
313
314
    if (ast->declarator)
        fun->setSourceLocation(ast->declarator->firstToken());
con's avatar
con committed
315
316
317
318
319
    fun->setName(name);
    fun->setTemplateParameters(_templateParameters);
    fun->setVisibility(semantic()->currentVisibility());
    fun->setMethodKey(semantic()->currentMethodKey());

320
321
    const bool isQ_SLOT   = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_SLOT;
    const bool isQ_SIGNAL = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_SIGNAL;
322
    const bool isQ_INVOKABLE = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_INVOKABLE;
323
324
325
326
327

    if (isQ_SIGNAL)
        fun->setMethodKey(Function::SignalMethod);
    else if (isQ_SLOT)
        fun->setMethodKey(Function::SlotMethod);
328
    else if (isQ_INVOKABLE)
329
        fun->setMethodKey(Function::InvokableMethod);
330

con's avatar
con committed
331
332
    checkFunctionArguments(fun);

Roberto Raggi's avatar
Roberto Raggi committed
333
    ast->symbol = fun;
con's avatar
con committed
334
335
    _scope->enterSymbol(fun);

336
337
338
339
340
341
342
343
344
345
346
347
    if (! semantic()->skipFunctionBodies()) {
        if (ast->ctor_initializer) {
            bool looksLikeCtor = false;
            if (ty.isValid() || ! fun->identity())
                looksLikeCtor = false;
            else if (fun->identity()->isNameId() || fun->identity()->isTemplateNameId())
                looksLikeCtor = true;

            if (! looksLikeCtor) {
                translationUnit()->error(ast->ctor_initializer->firstToken(),
                                         "only constructors take base initializers");
            }
348
            accept(ast->ctor_initializer);
349
        }
con's avatar
con committed
350

351
352
        const int previousVisibility = semantic()->switchVisibility(Symbol::Public);
        const int previousMethodKey = semantic()->switchMethodKey(Function::NormalMethod);
con's avatar
con committed
353

354
        semantic()->check(ast->function_body, fun->members());
con's avatar
con committed
355

356
357
358
        semantic()->switchMethodKey(previousMethodKey);
        semantic()->switchVisibility(previousVisibility);
    }
con's avatar
con committed
359
360
361
362

    return false;
}

Roberto Raggi's avatar
Roberto Raggi committed
363
364
365
bool CheckDeclaration::visit(MemInitializerAST *ast)
{
    (void) semantic()->check(ast->name, _scope);
366
367
368
    for (ExpressionListAST *it = ast->expression_list; it; it = it->next) {
        FullySpecifiedType ty = semantic()->check(it->value, _scope);
    }
Roberto Raggi's avatar
Roberto Raggi committed
369
370
371
    return false;
}

con's avatar
con committed
372
373
bool CheckDeclaration::visit(LinkageBodyAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
374
    for (DeclarationListAST *decl = ast->declaration_list; decl; decl = decl->next) {
375
       semantic()->check(decl->value, _scope);
con's avatar
con committed
376
377
378
379
380
381
    }
    return false;
}

bool CheckDeclaration::visit(LinkageSpecificationAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
382
    semantic()->check(ast->declaration, _scope);
con's avatar
con committed
383
384
385
386
387
    return false;
}

bool CheckDeclaration::visit(NamespaceAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
388
389
390
    const Name *namespaceName = 0;
    if (const Identifier *id = identifier(ast->identifier_token))
        namespaceName = control()->nameId(id);
391
392
393
394
395
396
397

    unsigned sourceLocation = ast->firstToken();

    if (ast->identifier_token)
        sourceLocation = ast->identifier_token;

    Namespace *ns = control()->newNamespace(sourceLocation, namespaceName);
398
399
    ns->setStartOffset(tokenAt(ast->firstToken()).offset);
    ns->setEndOffset(tokenAt(ast->lastToken()).offset);
Roberto Raggi's avatar
Roberto Raggi committed
400
    ast->symbol = ns;
con's avatar
con committed
401
402
403
404
405
406
407
408
409
410
411
412
413
    _scope->enterSymbol(ns);
    semantic()->check(ast->linkage_body, ns->members()); // ### we'll do the merge later.

    return false;
}

bool CheckDeclaration::visit(NamespaceAliasDefinitionAST *)
{
    return false;
}

bool CheckDeclaration::visit(ParameterDeclarationAST *ast)
{
414
415
416
417
418
419
420
    unsigned sourceLocation = locationOfDeclaratorId(ast->declarator);
    if (! sourceLocation) {
        if (ast->declarator)
            sourceLocation = ast->declarator->firstToken();
        else
            sourceLocation = ast->firstToken();
    }
421

Roberto Raggi's avatar
Roberto Raggi committed
422
    const Name *argName = 0;
Roberto Raggi's avatar
Roberto Raggi committed
423
    FullySpecifiedType ty = semantic()->check(ast->type_specifier_list, _scope);
con's avatar
con committed
424
425
426
    FullySpecifiedType argTy = semantic()->check(ast->declarator, ty.qualifiedType(),
                                                 _scope, &argName);
    FullySpecifiedType exprTy = semantic()->check(ast->expression, _scope);
427
    Argument *arg = control()->newArgument(sourceLocation, argName);
Roberto Raggi's avatar
Roberto Raggi committed
428
    ast->symbol = arg;
429
430
431
432
433
434
435
436
437
438
439
440
441
    if (ast->expression) {
        unsigned startOfExpression = ast->expression->firstToken();
        unsigned endOfExpression = ast->expression->lastToken();
        std::string buffer;
        for (unsigned index = startOfExpression; index != endOfExpression; ++index) {
            const Token &tk = tokenAt(index);
            if (tk.whitespace() || tk.newline())
                buffer += ' ';
            buffer += tk.spell();
        }
        const StringLiteral *initializer = control()->findOrInsertStringLiteral(buffer.c_str(), buffer.size());
        arg->setInitializer(initializer);
    }
con's avatar
con committed
442
443
444
445
446
447
448
    arg->setType(argTy);
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(TemplateDeclarationAST *ast)
{
449
450
    Scope *scope = new Scope(_scope->owner());

Roberto Raggi's avatar
Roberto Raggi committed
451
    for (DeclarationListAST *param = ast->template_parameter_list; param; param = param->next) {
452
       semantic()->check(param->value, scope);
con's avatar
con committed
453
454
    }

455
456
457
    semantic()->check(ast->declaration, _scope,
                      new TemplateParameters(_templateParameters, scope));

con's avatar
con committed
458
459
460
461
462
    return false;
}

bool CheckDeclaration::visit(TypenameTypeParameterAST *ast)
{
463
464
465
466
    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
467
    const Name *name = semantic()->check(ast->name, _scope);
468
469
470
    TypenameArgument *arg = control()->newTypenameArgument(sourceLocation, name);
    FullySpecifiedType ty = semantic()->check(ast->type_id, _scope);
    arg->setType(ty);
Roberto Raggi's avatar
Roberto Raggi committed
471
    ast->symbol = arg;
con's avatar
con committed
472
473
474
475
476
477
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(TemplateTypeParameterAST *ast)
{
478
479
480
481
    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
482
    const Name *name = semantic()->check(ast->name, _scope);
483
484
485
    TypenameArgument *arg = control()->newTypenameArgument(sourceLocation, name);
    FullySpecifiedType ty = semantic()->check(ast->type_id, _scope);
    arg->setType(ty);
Roberto Raggi's avatar
Roberto Raggi committed
486
    ast->symbol = arg;
con's avatar
con committed
487
488
489
490
491
492
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(UsingAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
493
    const Name *name = semantic()->check(ast->name, _scope);
494
495
496
497
498
499

    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

    UsingDeclaration *u = control()->newUsingDeclaration(sourceLocation, name);
Roberto Raggi's avatar
Roberto Raggi committed
500
    ast->symbol = u;
con's avatar
con committed
501
502
503
504
505
506
    _scope->enterSymbol(u);
    return false;
}

bool CheckDeclaration::visit(UsingDirectiveAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
507
    const Name *name = semantic()->check(ast->name, _scope);
508
509
510
511
512
513

    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

    UsingNamespaceDirective *u = control()->newUsingNamespaceDirective(sourceLocation, name);
Roberto Raggi's avatar
Roberto Raggi committed
514
    ast->symbol = u;
con's avatar
con committed
515
    _scope->enterSymbol(u);
516
517
518
519
520

    if (! (_scope->isBlockScope() || _scope->isNamespaceScope()))
        translationUnit()->error(ast->firstToken(),
                                 "using-directive not within namespace or block scope");

con's avatar
con committed
521
522
523
    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
524
bool CheckDeclaration::visit(ObjCProtocolForwardDeclarationAST *ast)
525
526
527
528
{
    const unsigned sourceLocation = ast->firstToken();

    List<ObjCForwardProtocolDeclaration *> **symbolIter = &ast->symbols;
529
    for (NameListAST *it = ast->identifier_list; it; it = it->next) {
530
        unsigned declarationLocation;
Roberto Raggi's avatar
Roberto Raggi committed
531
532
        if (it->value)
            declarationLocation = it->value->firstToken();
533
534
535
        else
            declarationLocation = sourceLocation;

Roberto Raggi's avatar
Roberto Raggi committed
536
        const Name *protocolName = semantic()->check(it->value, _scope);
537
538
539
540
541
542
543
544
545
546
547
548
549
550
        ObjCForwardProtocolDeclaration *fwdProtocol = control()->newObjCForwardProtocolDeclaration(sourceLocation, protocolName);
        fwdProtocol->setStartOffset(tokenAt(ast->firstToken()).offset);
        fwdProtocol->setEndOffset(tokenAt(ast->lastToken()).offset);

        _scope->enterSymbol(fwdProtocol);

        *symbolIter = new (translationUnit()->memoryPool()) List<ObjCForwardProtocolDeclaration *>();
        (*symbolIter)->value = fwdProtocol;
        symbolIter = &(*symbolIter)->next;
    }

    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
551
bool CheckDeclaration::visit(ObjCProtocolDeclarationAST *ast)
552
553
554
555
556
557
558
{
    unsigned sourceLocation;
    if (ast->name)
        sourceLocation = ast->name->firstToken();
    else
        sourceLocation = ast->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
559
    const Name *protocolName = semantic()->check(ast->name, _scope);
560
561
562
563
    ObjCProtocol *protocol = control()->newObjCProtocol(sourceLocation, protocolName);
    protocol->setStartOffset(tokenAt(ast->firstToken()).offset);
    protocol->setEndOffset(tokenAt(ast->lastToken()).offset);

564
    if (ast->protocol_refs && ast->protocol_refs->identifier_list) {
565
        for (NameListAST *iter = ast->protocol_refs->identifier_list; iter; iter = iter->next) {
Roberto Raggi's avatar
Roberto Raggi committed
566
            NameAST* name = iter->value;
Roberto Raggi's avatar
Roberto Raggi committed
567
            const Name *protocolName = semantic()->check(name, _scope);
568
569
570
571
572
573
            ObjCBaseProtocol *baseProtocol = control()->newObjCBaseProtocol(name->firstToken(), protocolName);
            protocol->addProtocol(baseProtocol);
        }
    }

    int previousObjCVisibility = semantic()->switchObjCVisibility(Function::Public);
Roberto Raggi's avatar
Roberto Raggi committed
574
    for (DeclarationListAST *it = ast->member_declaration_list; it; it = it->next) {
575
        semantic()->check(it->value, protocol->members());
576
577
578
579
    }
    (void) semantic()->switchObjCVisibility(previousObjCVisibility);

    ast->symbol = protocol;
580
581
582
583
584
    _scope->enterSymbol(protocol);

    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
585
bool CheckDeclaration::visit(ObjCClassForwardDeclarationAST *ast)
586
587
588
589
{
    const unsigned sourceLocation = ast->firstToken();

    List<ObjCForwardClassDeclaration *> **symbolIter = &ast->symbols;
590
    for (NameListAST *it = ast->identifier_list; it; it = it->next) {
591
        unsigned declarationLocation;
Roberto Raggi's avatar
Roberto Raggi committed
592
593
        if (it->value)
            declarationLocation = it->value->firstToken();
594
595
596
        else
            declarationLocation = sourceLocation;

Roberto Raggi's avatar
Roberto Raggi committed
597
        const Name *className = semantic()->check(it->value, _scope);
598
599
600
601
602
603
604
605
606
607
608
609
610
611
        ObjCForwardClassDeclaration *fwdClass = control()->newObjCForwardClassDeclaration(sourceLocation, className);
        fwdClass->setStartOffset(tokenAt(ast->firstToken()).offset);
        fwdClass->setEndOffset(tokenAt(ast->lastToken()).offset);

        _scope->enterSymbol(fwdClass);

        *symbolIter = new (translationUnit()->memoryPool()) List<ObjCForwardClassDeclaration *>();
        (*symbolIter)->value = fwdClass;
        symbolIter = &(*symbolIter)->next;
    }

    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
612
bool CheckDeclaration::visit(ObjCClassDeclarationAST *ast)
613
614
615
616
617
618
619
{
    unsigned sourceLocation;
    if (ast->class_name)
        sourceLocation = ast->class_name->firstToken();
    else
        sourceLocation = ast->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
620
    const Name *className = semantic()->check(ast->class_name, _scope);
621
622
623
624
625
    ObjCClass *klass = control()->newObjCClass(sourceLocation, className);
    klass->setStartOffset(tokenAt(ast->firstToken()).offset);
    klass->setEndOffset(tokenAt(ast->lastToken()).offset);
    ast->symbol = klass;

626
627
628
    klass->setInterface(ast->interface_token != 0);

    if (ast->category_name) {
Roberto Raggi's avatar
Roberto Raggi committed
629
        const Name *categoryName = semantic()->check(ast->category_name, _scope);
630
631
632
        klass->setCategoryName(categoryName);
    }

633
    if (ast->superclass) {
Roberto Raggi's avatar
Roberto Raggi committed
634
        const Name *superClassName = semantic()->check(ast->superclass, _scope);
635
636
637
638
639
        ObjCBaseClass *superKlass = control()->newObjCBaseClass(ast->superclass->firstToken(), superClassName);
        klass->setBaseClass(superKlass);
    }

    if (ast->protocol_refs && ast->protocol_refs->identifier_list) {
640
        for (NameListAST *iter = ast->protocol_refs->identifier_list; iter; iter = iter->next) {
Roberto Raggi's avatar
Roberto Raggi committed
641
            NameAST* name = iter->value;
Roberto Raggi's avatar
Roberto Raggi committed
642
            const Name *protocolName = semantic()->check(name, _scope);
643
644
645
646
647
            ObjCBaseProtocol *baseProtocol = control()->newObjCBaseProtocol(name->firstToken(), protocolName);
            klass->addProtocol(baseProtocol);
        }
    }

648
649
650
651
652
    _scope->enterSymbol(klass);

    int previousObjCVisibility = semantic()->switchObjCVisibility(Function::Protected);

    if (ast->inst_vars_decl) {
Roberto Raggi's avatar
Roberto Raggi committed
653
        for (DeclarationListAST *it = ast->inst_vars_decl->instance_variable_list; it; it = it->next) {
654
            semantic()->check(it->value, klass->members());
655
656
657
        }
    }

Erik Verbruggen's avatar
Erik Verbruggen committed
658
659
    (void) semantic()->switchObjCVisibility(Function::Public);

Roberto Raggi's avatar
Roberto Raggi committed
660
    for (DeclarationListAST *it = ast->member_declaration_list; it; it = it->next) {
661
        semantic()->check(it->value, klass->members());
662
663
664
665
666
667
668
669
670
    }

    (void) semantic()->switchObjCVisibility(previousObjCVisibility);

    return false;
}

bool CheckDeclaration::visit(ObjCMethodDeclarationAST *ast)
{
671
672
673
674
675
    ObjCMethodPrototypeAST *methodProto = ast->method_prototype;
    if (!methodProto)
        return false;
    ObjCSelectorAST *selector = methodProto->selector;
    if (!selector)
676
677
        return false;

678
    FullySpecifiedType ty = semantic()->check(methodProto, _scope);
679
680
    ObjCMethod *methodTy = ty.type()->asObjCMethodType();
    if (!methodTy)
681
682
        return false;

683
    Symbol *symbol;
Erik Verbruggen's avatar
Erik Verbruggen committed
684
    if (ast->function_body) {
685
        if (!semantic()->skipFunctionBodies()) {
686
            semantic()->check(ast->function_body, methodTy->members());
687
        }
688

689
        symbol = methodTy;
Erik Verbruggen's avatar
Erik Verbruggen committed
690
    } else {
691
        Declaration *decl = control()->newDeclaration(selector->firstToken(), methodTy->name());
692
        decl->setType(methodTy);
Erik Verbruggen's avatar
Erik Verbruggen committed
693
        symbol = decl;
694
        symbol->setStorage(methodTy->storage());
695
    }
696

697
698
    symbol->setStartOffset(tokenAt(ast->firstToken()).offset);
    symbol->setEndOffset(tokenAt(ast->lastToken()).offset);
699
    symbol->setVisibility(semantic()->currentObjCVisibility());
700
701
702

    _scope->enterSymbol(symbol);

703
704
705
    return false;
}

706
707
708
709
710
711
712
713
bool CheckDeclaration::visit(ObjCVisibilityDeclarationAST *ast)
{
    int accessSpecifier = tokenKind(ast->visibility_token);
    int visibility = semantic()->visibilityForObjCAccessSpecifier(accessSpecifier);
    semantic()->switchObjCVisibility(visibility);
    return false;
}

714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
bool CheckDeclaration::checkPropertyAttribute(ObjCPropertyAttributeAST *attrAst,
                                              int &flags,
                                              int attr)
{
    if (flags & attr) {
        translationUnit()->warning(attrAst->attribute_identifier_token,
                                   "duplicate property attribute \"%s\"",
                                   spell(attrAst->attribute_identifier_token));
        return false;
    } else {
        flags |= attr;
        return true;
    }
}

bool CheckDeclaration::visit(ObjCPropertyDeclarationAST *ast)
{
731
732
733
734
735
736
737
738
739
740
    semantic()->check(ast->simple_declaration, _scope);
    SimpleDeclarationAST *simpleDecl = ast->simple_declaration->asSimpleDeclaration();

    if (!simpleDecl) {
        translationUnit()->warning(ast->simple_declaration->firstToken(),
                                   "invalid type for property declaration");
        return false;
    }

    int propAttrs = ObjCPropertyDeclaration::None;
Roberto Raggi's avatar
Roberto Raggi committed
741
    const Name *getterName = 0, *setterName = 0;
742

Roberto Raggi's avatar
Roberto Raggi committed
743
    for (ObjCPropertyAttributeListAST *iter= ast->property_attribute_list; iter; iter = iter->next) {
744
        ObjCPropertyAttributeAST *attrAst = iter->value;
745
746
747
        if (!attrAst)
            continue;

Roberto Raggi's avatar
Roberto Raggi committed
748
        const Identifier *attrId = identifier(attrAst->attribute_identifier_token);
749
        if (attrId == control()->objcGetterId()) {
750
751
            if (checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Getter)) {
                getterName = semantic()->check(attrAst->method_selector, _scope);
752
            }
753
        } else if (attrId == control()->objcSetterId()) {
754
755
            if (checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Setter)) {
                setterName = semantic()->check(attrAst->method_selector, _scope);
756
            }
757
        } else if (attrId == control()->objcReadwriteId()) {
758
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::ReadWrite);
759
        } else if (attrId == control()->objcReadonlyId()) {
760
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::ReadOnly);
761
        } else if (attrId == control()->objcAssignId()) {
762
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Assign);
763
        } else if (attrId == control()->objcRetainId()) {
764
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Retain);
765
        } else if (attrId == control()->objcCopyId()) {
766
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Copy);
767
        } else if (attrId == control()->objcNonatomicId()) {
768
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::NonAtomic);
769
770
771
        }
    }

772
773
    if (propAttrs & ObjCPropertyDeclaration::ReadOnly &&
        propAttrs & ObjCPropertyDeclaration::ReadWrite)
774
775
776
        // Should this be an error instead of only a warning?
        translationUnit()->warning(ast->property_token,
                                   "property can have at most one attribute \"readonly\" or \"readwrite\" specified");
777
    int setterSemAttrs = propAttrs & ObjCPropertyDeclaration::SetterSemanticsMask;
778
    if (setterSemAttrs
779
780
781
            && setterSemAttrs != ObjCPropertyDeclaration::Assign
            && setterSemAttrs != ObjCPropertyDeclaration::Retain
            && setterSemAttrs != ObjCPropertyDeclaration::Copy) {
782
783
784
785
786
        // Should this be an error instead of only a warning?
        translationUnit()->warning(ast->property_token,
                                   "property can have at most one attribute \"assign\", \"retain\", or \"copy\" specified");
    }

787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
    List<ObjCPropertyDeclaration *> **lastSymbols = &ast->symbols;
    for (List<Declaration*> *iter = simpleDecl->symbols; iter; iter = iter->next) {
        ObjCPropertyDeclaration *propDecl = control()->newObjCPropertyDeclaration(ast->firstToken(),
                                                                                  iter->value->name());
        propDecl->setType(iter->value->type());
        propDecl->setAttributes(propAttrs);
        propDecl->setGetterName(getterName);
        propDecl->setSetterName(setterName);
        _scope->enterSymbol(propDecl);

        *lastSymbols = new (translationUnit()->memoryPool()) List<ObjCPropertyDeclaration *>();
        (*lastSymbols)->value = propDecl;
        lastSymbols = &(*lastSymbols)->next;
    }

802
803
    return false;
}
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824

bool CheckDeclaration::visit(QtEnumDeclarationAST *ast)
{
    for (NameListAST *iter = ast->enumerator_list; iter; iter = iter->next)
        semantic()->check(iter->value, _scope);
    return false;
}

bool CheckDeclaration::visit(QtFlagsDeclarationAST *ast)
{
    for (NameListAST *iter = ast->flag_enums_list; iter; iter = iter->next)
        semantic()->check(iter->value, _scope);
    return false;
}

bool CheckDeclaration::visit(QtPropertyDeclarationAST *ast)
{
    if (ast->type_id)
        semantic()->check(ast->type_id, _scope);
    if (ast->property_name)
        semantic()->check(ast->property_name, _scope);
825
826
827
828
829
830
831
832
833
834
835

    for (QtPropertyDeclarationItemListAST *iter = ast->property_declaration_items;
         iter; iter = iter->next) {
        if (! iter->value)
            continue;

        if (QtPropertyDeclarationNamingItemAST *namedItem = iter->value->asQtPropertyDeclarationNamingItem())
            if (namedItem->name_value)
                semantic()->check(namedItem->name_value, _scope);
    }

836
837
    return false;
}