CheckDeclaration.cpp 32.7 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2
3
4
**
** This file is part of Qt Creator
**
hjk's avatar
hjk committed
5
** Copyright (c) 2010 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 "QtContextKeywords.h"
60
#include <string>
con's avatar
con committed
61
62
#include <cassert>

Roberto Raggi's avatar
Roberto Raggi committed
63
using namespace CPlusPlus;
con's avatar
con committed
64
65
66
67
68
69
70
71
72
73
74
75
76

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

CheckDeclaration::~CheckDeclaration()
{ }

void CheckDeclaration::check(DeclarationAST *declaration,
77
                             Scope *scope, TemplateParameters *templateParameters)
con's avatar
con committed
78
79
{
    Scope *previousScope = switchScope(scope);
80
    TemplateParameters *previousTemplateParameters = switchTemplateParameters(templateParameters);
con's avatar
con committed
81
82
83
84
85
86
87
    DeclarationAST *previousDeclaration = switchDeclaration(declaration);
    accept(declaration);
    (void) switchDeclaration(previousDeclaration);
    (void) switchTemplateParameters(previousTemplateParameters);
    (void) switchScope(previousScope);
}

88
89
90
91
92
93
94
void CheckDeclaration::check(CtorInitializerAST *ast, Scope *scope)
{
    Scope *previousScope = switchScope(scope);
    accept(ast);
    (void) switchScope(previousScope);
}

con's avatar
con committed
95
96
97
98
99
100
101
102
103
104
105
106
107
108
DeclarationAST *CheckDeclaration::switchDeclaration(DeclarationAST *declaration)
{
    DeclarationAST *previousDeclaration = _declaration;
    _declaration = declaration;
    return previousDeclaration;
}

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

109
TemplateParameters *CheckDeclaration::switchTemplateParameters(TemplateParameters *templateParameters)
con's avatar
con committed
110
{
111
    TemplateParameters *previousTemplateParameters = _templateParameters;
con's avatar
con committed
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
    _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");
            }
        }
    }
}

134
135
136
137
138
139
140
141
142
143
144
145
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
146
147
bool CheckDeclaration::visit(SimpleDeclarationAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
148
    FullySpecifiedType ty = semantic()->check(ast->decl_specifier_list, _scope);
con's avatar
con committed
149
150
    FullySpecifiedType qualTy = ty.qualifiedType();

151
152
    if (_templateParameters && ty) {
        if (Class *klass = ty->asClassType()) {
con's avatar
con committed
153
            klass->setTemplateParameters(_templateParameters);
154
            _templateParameters = 0; // consume the template parameters
con's avatar
con committed
155
156
157
        }
    }

158
159
    if (ast->decl_specifier_list && ! ast->declarator_list) {
        ElaboratedTypeSpecifierAST *elab_type_spec = ast->decl_specifier_list->value->asElaboratedTypeSpecifier();
160

161
162
163
164
        if (! elab_type_spec && ty.isFriend() && ast->decl_specifier_list->next && ! ast->decl_specifier_list->next->next) {
            // friend template class
            elab_type_spec = ast->decl_specifier_list->next->value->asElaboratedTypeSpecifier();
        }
165

166
167
        if (elab_type_spec) {
            unsigned sourceLocation = ast->decl_specifier_list->firstToken();
168

Roberto Raggi's avatar
Roberto Raggi committed
169
            const Name *name = semantic()->check(elab_type_spec->name, _scope);
170
            ForwardClassDeclaration *symbol =
171
                    control()->newForwardClassDeclaration(sourceLocation, name);
172
173
174
175
176

            if (_templateParameters) {
                symbol->setTemplateParameters(_templateParameters);
                _templateParameters = 0;
            }
177

178
179
            if (ty.isDeprecated())
                symbol->setDeprecated(true);
180
181
            if (ty.isUnavailable())
                symbol->setUnavailable(true);
182

183
184
185
            if (ty.isFriend())
                symbol->setStorage(Symbol::Friend);

186
187
188
189
190
            _scope->enterSymbol(symbol);
            return false;
        }
    }

191
192
    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;
193
    const bool isQ_INVOKABLE = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_INVOKABLE;
194

Roberto Raggi's avatar
Roberto Raggi committed
195
    List<Declaration *> **decl_it = &ast->symbols;
Roberto Raggi's avatar
Roberto Raggi committed
196
    for (DeclaratorListAST *it = ast->declarator_list; it; it = it->next) {
Roberto Raggi's avatar
Roberto Raggi committed
197
        const Name *name = 0;
Roberto Raggi's avatar
Roberto Raggi committed
198
        FullySpecifiedType declTy = semantic()->check(it->value, qualTy,
con's avatar
con committed
199
200
                                                      _scope, &name);

Roberto Raggi's avatar
Roberto Raggi committed
201
        unsigned location = locationOfDeclaratorId(it->value);
202
        if (! location) {
Roberto Raggi's avatar
Roberto Raggi committed
203
204
            if (it->value)
                location = it->value->firstToken();
205
206
207
            else
                location = ast->firstToken();
        }
208

209
210
        Function *fun = 0;
        if (declTy && 0 != (fun = declTy->asFunctionType())) {
211
            fun->setSourceLocation(location, translationUnit());
con's avatar
con committed
212
213
214
            fun->setScope(_scope);
            fun->setName(name);
            fun->setMethodKey(semantic()->currentMethodKey());
215
            fun->setVirtual(ty.isVirtual());
216
217
            if (ty.isDeprecated())
                fun->setDeprecated(true);
218
219
            if (ty.isUnavailable())
                fun->setUnavailable(true);
220
221
222
223
            if (isQ_SIGNAL)
                fun->setMethodKey(Function::SignalMethod);
            else if (isQ_SLOT)
                fun->setMethodKey(Function::SlotMethod);
224
            else if (isQ_INVOKABLE)
225
                fun->setMethodKey(Function::InvokableMethod);
con's avatar
con committed
226
227
228
229
230
231
232
            fun->setVisibility(semantic()->currentVisibility());
        } else if (semantic()->currentMethodKey() != Function::NormalMethod) {
            translationUnit()->warning(ast->firstToken(),
                                       "expected a function declaration");
        }

        Declaration *symbol = control()->newDeclaration(location, name);
233
234
235
        symbol->setStartOffset(tokenAt(ast->firstToken()).offset);
        symbol->setEndOffset(tokenAt(ast->lastToken()).offset);

con's avatar
con committed
236
        symbol->setType(declTy);
237
238
        if (declTy.isDeprecated())
            symbol->setDeprecated(true);
239
240
        if (declTy.isUnavailable())
            symbol->setUnavailable(true);
con's avatar
con committed
241

242
        if (_templateParameters && it == ast->declarator_list) {
con's avatar
con committed
243
            symbol->setTemplateParameters(_templateParameters);
244
245
            _templateParameters = 0; // consume the template parameters
        }
con's avatar
con committed
246
247
248
249
250

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

        if (ty.isFriend())
            symbol->setStorage(Symbol::Friend);
251
252
        else if (ty.isAuto())
            symbol->setStorage(Symbol::Auto);
con's avatar
con committed
253
254
255
256
257
258
259
260
261
262
        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);
263
264

        if (ty.isDeprecated())
265
            symbol->setDeprecated(true);
266
267
        if (ty.isUnavailable())
            symbol->setUnavailable(true);
con's avatar
con committed
268

Roberto Raggi's avatar
Roberto Raggi committed
269
270
        if (it->value && it->value->initializer) {
            FullySpecifiedType initTy = semantic()->check(it->value->initializer, _scope);
271
272
        }

Roberto Raggi's avatar
Roberto Raggi committed
273
274
275
276
        *decl_it = new (translationUnit()->memoryPool()) List<Declaration *>();
        (*decl_it)->value = symbol;
        decl_it = &(*decl_it)->next;

con's avatar
con committed
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
        _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);
294
    else if (accessSpecifier == T_Q_SIGNALS)
con's avatar
con committed
295
296
297
298
299
300
301
302
303
304
305
        semantic()->switchMethodKey(Function::SignalMethod);
    else
        semantic()->switchMethodKey(Function::NormalMethod);
    return false;
}

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

306
bool CheckDeclaration::visit(ExceptionDeclarationAST *ast)
con's avatar
con committed
307
{
Roberto Raggi's avatar
Roberto Raggi committed
308
    FullySpecifiedType ty = semantic()->check(ast->type_specifier_list, _scope);
309
310
    FullySpecifiedType qualTy = ty.qualifiedType();

Roberto Raggi's avatar
Roberto Raggi committed
311
    const Name *name = 0;
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
    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
329
330
331
332
333
    return false;
}

bool CheckDeclaration::visit(FunctionDefinitionAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
334
    FullySpecifiedType ty = semantic()->check(ast->decl_specifier_list, _scope);
con's avatar
con committed
335
    FullySpecifiedType qualTy = ty.qualifiedType();
Roberto Raggi's avatar
Roberto Raggi committed
336
    const Name *name = 0;
con's avatar
con committed
337
338
    FullySpecifiedType funTy = semantic()->check(ast->declarator, qualTy,
                                                 _scope, &name);
339
    if (! (funTy && funTy->isFunctionType())) {
con's avatar
con committed
340
341
342
343
344
        translationUnit()->error(ast->firstToken(),
                                 "expected a function prototype");
        return false;
    }

345
    Function *fun = funTy->asFunctionType();
346
    fun->setVirtual(ty.isVirtual());
347
348
    if (ty.isDeprecated())
        fun->setDeprecated(true);
349
350
    if (ty.isUnavailable())
        fun->setUnavailable(true);
351
352
    fun->setStartOffset(tokenAt(ast->firstToken()).offset);
    fun->setEndOffset(tokenAt(ast->lastToken()).offset);
353
    if (ast->declarator)
354
        fun->setSourceLocation(ast->declarator->firstToken(), translationUnit());
con's avatar
con committed
355
356
357
358
359
    fun->setName(name);
    fun->setTemplateParameters(_templateParameters);
    fun->setVisibility(semantic()->currentVisibility());
    fun->setMethodKey(semantic()->currentMethodKey());

360
361
    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;
362
    const bool isQ_INVOKABLE = ast->qt_invokable_token && tokenKind(ast->qt_invokable_token) == T_Q_INVOKABLE;
363
364
365
366
367

    if (isQ_SIGNAL)
        fun->setMethodKey(Function::SignalMethod);
    else if (isQ_SLOT)
        fun->setMethodKey(Function::SlotMethod);
368
    else if (isQ_INVOKABLE)
369
        fun->setMethodKey(Function::InvokableMethod);
370

con's avatar
con committed
371
372
    checkFunctionArguments(fun);

Roberto Raggi's avatar
Roberto Raggi committed
373
    ast->symbol = fun;
con's avatar
con committed
374
375
    _scope->enterSymbol(fun);

376
377
    if (! semantic()->skipFunctionBodies())
        semantic()->checkFunctionDefinition(ast);
con's avatar
con committed
378
379
380
381

    return false;
}

Roberto Raggi's avatar
Roberto Raggi committed
382
383
384
bool CheckDeclaration::visit(MemInitializerAST *ast)
{
    (void) semantic()->check(ast->name, _scope);
385
386
387
    for (ExpressionListAST *it = ast->expression_list; it; it = it->next) {
        FullySpecifiedType ty = semantic()->check(it->value, _scope);
    }
Roberto Raggi's avatar
Roberto Raggi committed
388
389
390
    return false;
}

con's avatar
con committed
391
392
bool CheckDeclaration::visit(LinkageBodyAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
393
    for (DeclarationListAST *decl = ast->declaration_list; decl; decl = decl->next) {
394
       semantic()->check(decl->value, _scope);
con's avatar
con committed
395
396
397
398
399
400
    }
    return false;
}

bool CheckDeclaration::visit(LinkageSpecificationAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
401
    semantic()->check(ast->declaration, _scope);
con's avatar
con committed
402
403
404
405
406
    return false;
}

bool CheckDeclaration::visit(NamespaceAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
407
408
409
    const Name *namespaceName = 0;
    if (const Identifier *id = identifier(ast->identifier_token))
        namespaceName = control()->nameId(id);
410
411
412
413
414
415
416

    unsigned sourceLocation = ast->firstToken();

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

    Namespace *ns = control()->newNamespace(sourceLocation, namespaceName);
417
418
    ns->setStartOffset(tokenAt(ast->firstToken()).offset);
    ns->setEndOffset(tokenAt(ast->lastToken()).offset);
Roberto Raggi's avatar
Roberto Raggi committed
419
    ast->symbol = ns;
con's avatar
con committed
420
421
422
423
424
425
    _scope->enterSymbol(ns);
    semantic()->check(ast->linkage_body, ns->members()); // ### we'll do the merge later.

    return false;
}

426
bool CheckDeclaration::visit(NamespaceAliasDefinitionAST *ast)
con's avatar
con committed
427
{
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
    const Name *name = 0;

    if (const Identifier *id = identifier(ast->namespace_name_token))
        name = control()->nameId(id);

    unsigned sourceLocation = ast->firstToken();

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

    const Name *namespaceName = semantic()->check(ast->name, _scope);

    NamespaceAlias *namespaceAlias = control()->newNamespaceAlias(sourceLocation, name);
    namespaceAlias->setNamespaceName(namespaceName);
    namespaceAlias->setStartOffset(tokenAt(ast->firstToken()).offset);
    namespaceAlias->setEndOffset(tokenAt(ast->lastToken()).offset);
    //ast->symbol = namespaceAlias;
    _scope->enterSymbol(namespaceAlias);

con's avatar
con committed
447
448
449
450
451
    return false;
}

bool CheckDeclaration::visit(ParameterDeclarationAST *ast)
{
452
453
454
455
456
457
458
    unsigned sourceLocation = locationOfDeclaratorId(ast->declarator);
    if (! sourceLocation) {
        if (ast->declarator)
            sourceLocation = ast->declarator->firstToken();
        else
            sourceLocation = ast->firstToken();
    }
459

Roberto Raggi's avatar
Roberto Raggi committed
460
    const Name *argName = 0;
Roberto Raggi's avatar
Roberto Raggi committed
461
    FullySpecifiedType ty = semantic()->check(ast->type_specifier_list, _scope);
con's avatar
con committed
462
463
464
    FullySpecifiedType argTy = semantic()->check(ast->declarator, ty.qualifiedType(),
                                                 _scope, &argName);
    FullySpecifiedType exprTy = semantic()->check(ast->expression, _scope);
465
    Argument *arg = control()->newArgument(sourceLocation, argName);
Roberto Raggi's avatar
Roberto Raggi committed
466
    ast->symbol = arg;
467
468
469
470
471
472
473
474
475
476
477
478
479
    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
480
481
482
483
484
485
486
    arg->setType(argTy);
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(TemplateDeclarationAST *ast)
{
487
488
    Scope *scope = new Scope(_scope->owner());

Roberto Raggi's avatar
Roberto Raggi committed
489
    for (DeclarationListAST *param = ast->template_parameter_list; param; param = param->next) {
490
       semantic()->check(param->value, scope);
con's avatar
con committed
491
492
    }

493
494
495
    semantic()->check(ast->declaration, _scope,
                      new TemplateParameters(_templateParameters, scope));

con's avatar
con committed
496
497
498
499
500
    return false;
}

bool CheckDeclaration::visit(TypenameTypeParameterAST *ast)
{
501
502
503
504
    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
505
    const Name *name = semantic()->check(ast->name, _scope);
506
507
508
    TypenameArgument *arg = control()->newTypenameArgument(sourceLocation, name);
    FullySpecifiedType ty = semantic()->check(ast->type_id, _scope);
    arg->setType(ty);
Roberto Raggi's avatar
Roberto Raggi committed
509
    ast->symbol = arg;
con's avatar
con committed
510
511
512
513
514
515
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(TemplateTypeParameterAST *ast)
{
516
517
518
519
    unsigned sourceLocation = ast->firstToken();
    if (ast->name)
        sourceLocation = ast->name->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
520
    const Name *name = semantic()->check(ast->name, _scope);
521
522
523
    TypenameArgument *arg = control()->newTypenameArgument(sourceLocation, name);
    FullySpecifiedType ty = semantic()->check(ast->type_id, _scope);
    arg->setType(ty);
Roberto Raggi's avatar
Roberto Raggi committed
524
    ast->symbol = arg;
con's avatar
con committed
525
526
527
528
529
530
    _scope->enterSymbol(arg);
    return false;
}

bool CheckDeclaration::visit(UsingAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
531
    const Name *name = semantic()->check(ast->name, _scope);
532
533
534
535
536
537

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

    UsingDeclaration *u = control()->newUsingDeclaration(sourceLocation, name);
Roberto Raggi's avatar
Roberto Raggi committed
538
    ast->symbol = u;
con's avatar
con committed
539
540
541
542
543
544
    _scope->enterSymbol(u);
    return false;
}

bool CheckDeclaration::visit(UsingDirectiveAST *ast)
{
Roberto Raggi's avatar
Roberto Raggi committed
545
    const Name *name = semantic()->check(ast->name, _scope);
546
547
548
549
550
551

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

    UsingNamespaceDirective *u = control()->newUsingNamespaceDirective(sourceLocation, name);
Roberto Raggi's avatar
Roberto Raggi committed
552
    ast->symbol = u;
con's avatar
con committed
553
    _scope->enterSymbol(u);
554
555
556
557
558

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

con's avatar
con committed
559
560
561
    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
562
bool CheckDeclaration::visit(ObjCProtocolForwardDeclarationAST *ast)
563
564
565
566
{
    const unsigned sourceLocation = ast->firstToken();

    List<ObjCForwardProtocolDeclaration *> **symbolIter = &ast->symbols;
567
    for (NameListAST *it = ast->identifier_list; it; it = it->next) {
568
        unsigned declarationLocation;
Roberto Raggi's avatar
Roberto Raggi committed
569
570
        if (it->value)
            declarationLocation = it->value->firstToken();
571
572
573
        else
            declarationLocation = sourceLocation;

Roberto Raggi's avatar
Roberto Raggi committed
574
        const Name *protocolName = semantic()->check(it->value, _scope);
575
576
577
578
579
580
581
582
583
584
585
586
587
588
        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
589
bool CheckDeclaration::visit(ObjCProtocolDeclarationAST *ast)
590
591
592
593
594
595
596
{
    unsigned sourceLocation;
    if (ast->name)
        sourceLocation = ast->name->firstToken();
    else
        sourceLocation = ast->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
597
    const Name *protocolName = semantic()->check(ast->name, _scope);
598
599
600
601
    ObjCProtocol *protocol = control()->newObjCProtocol(sourceLocation, protocolName);
    protocol->setStartOffset(tokenAt(ast->firstToken()).offset);
    protocol->setEndOffset(tokenAt(ast->lastToken()).offset);

602
    if (ast->protocol_refs && ast->protocol_refs->identifier_list) {
603
        for (NameListAST *iter = ast->protocol_refs->identifier_list; iter; iter = iter->next) {
Roberto Raggi's avatar
Roberto Raggi committed
604
            NameAST* name = iter->value;
Roberto Raggi's avatar
Roberto Raggi committed
605
            const Name *protocolName = semantic()->check(name, _scope);
606
607
608
609
610
611
            ObjCBaseProtocol *baseProtocol = control()->newObjCBaseProtocol(name->firstToken(), protocolName);
            protocol->addProtocol(baseProtocol);
        }
    }

    int previousObjCVisibility = semantic()->switchObjCVisibility(Function::Public);
Roberto Raggi's avatar
Roberto Raggi committed
612
    for (DeclarationListAST *it = ast->member_declaration_list; it; it = it->next) {
613
        semantic()->check(it->value, protocol->members());
614
615
616
617
    }
    (void) semantic()->switchObjCVisibility(previousObjCVisibility);

    ast->symbol = protocol;
618
619
620
621
622
    _scope->enterSymbol(protocol);

    return false;
}

Erik Verbruggen's avatar
Erik Verbruggen committed
623
bool CheckDeclaration::visit(ObjCClassForwardDeclarationAST *ast)
624
625
626
627
{
    const unsigned sourceLocation = ast->firstToken();

    List<ObjCForwardClassDeclaration *> **symbolIter = &ast->symbols;
628
    for (NameListAST *it = ast->identifier_list; it; it = it->next) {
629
        unsigned declarationLocation;
Roberto Raggi's avatar
Roberto Raggi committed
630
631
        if (it->value)
            declarationLocation = it->value->firstToken();
632
633
634
        else
            declarationLocation = sourceLocation;

Roberto Raggi's avatar
Roberto Raggi committed
635
        const Name *className = semantic()->check(it->value, _scope);
636
637
638
639
640
641
642
643
644
645
646
647
648
649
        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
650
bool CheckDeclaration::visit(ObjCClassDeclarationAST *ast)
651
652
653
654
655
656
657
{
    unsigned sourceLocation;
    if (ast->class_name)
        sourceLocation = ast->class_name->firstToken();
    else
        sourceLocation = ast->firstToken();

Roberto Raggi's avatar
Roberto Raggi committed
658
    const Name *className = semantic()->check(ast->class_name, _scope);
659
660
661
662
663
    ObjCClass *klass = control()->newObjCClass(sourceLocation, className);
    klass->setStartOffset(tokenAt(ast->firstToken()).offset);
    klass->setEndOffset(tokenAt(ast->lastToken()).offset);
    ast->symbol = klass;

664
665
666
    klass->setInterface(ast->interface_token != 0);

    if (ast->category_name) {
Roberto Raggi's avatar
Roberto Raggi committed
667
        const Name *categoryName = semantic()->check(ast->category_name, _scope);
668
669
670
        klass->setCategoryName(categoryName);
    }

671
    if (ast->superclass) {
Roberto Raggi's avatar
Roberto Raggi committed
672
        const Name *superClassName = semantic()->check(ast->superclass, _scope);
673
674
675
676
677
        ObjCBaseClass *superKlass = control()->newObjCBaseClass(ast->superclass->firstToken(), superClassName);
        klass->setBaseClass(superKlass);
    }

    if (ast->protocol_refs && ast->protocol_refs->identifier_list) {
678
        for (NameListAST *iter = ast->protocol_refs->identifier_list; iter; iter = iter->next) {
Roberto Raggi's avatar
Roberto Raggi committed
679
            NameAST* name = iter->value;
Roberto Raggi's avatar
Roberto Raggi committed
680
            const Name *protocolName = semantic()->check(name, _scope);
681
682
683
684
685
            ObjCBaseProtocol *baseProtocol = control()->newObjCBaseProtocol(name->firstToken(), protocolName);
            klass->addProtocol(baseProtocol);
        }
    }

686
687
688
689
690
    _scope->enterSymbol(klass);

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

    if (ast->inst_vars_decl) {
Roberto Raggi's avatar
Roberto Raggi committed
691
        for (DeclarationListAST *it = ast->inst_vars_decl->instance_variable_list; it; it = it->next) {
692
            semantic()->check(it->value, klass->members());
693
694
695
        }
    }

Erik Verbruggen's avatar
Erik Verbruggen committed
696
697
    (void) semantic()->switchObjCVisibility(Function::Public);

Roberto Raggi's avatar
Roberto Raggi committed
698
    for (DeclarationListAST *it = ast->member_declaration_list; it; it = it->next) {
699
        semantic()->check(it->value, klass->members());
700
701
702
703
704
705
706
707
708
    }

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

    return false;
}

bool CheckDeclaration::visit(ObjCMethodDeclarationAST *ast)
{
709
710
711
712
713
    ObjCMethodPrototypeAST *methodProto = ast->method_prototype;
    if (!methodProto)
        return false;
    ObjCSelectorAST *selector = methodProto->selector;
    if (!selector)
714
715
        return false;

716
    FullySpecifiedType ty = semantic()->check(methodProto, _scope);
717
718
    ObjCMethod *methodTy = ty.type()->asObjCMethodType();
    if (!methodTy)
719
720
        return false;

721
    Symbol *symbol;
Erik Verbruggen's avatar
Erik Verbruggen committed
722
    if (ast->function_body) {
723
        if (!semantic()->skipFunctionBodies()) {
724
            semantic()->check(ast->function_body, methodTy->members());
725
        }
726

727
        symbol = methodTy;
Erik Verbruggen's avatar
Erik Verbruggen committed
728
    } else {
729
        Declaration *decl = control()->newDeclaration(selector->firstToken(), methodTy->name());
730
        decl->setType(methodTy);
Erik Verbruggen's avatar
Erik Verbruggen committed
731
        symbol = decl;
732
        symbol->setStorage(methodTy->storage());
733
    }
734

735
736
    symbol->setStartOffset(tokenAt(ast->firstToken()).offset);
    symbol->setEndOffset(tokenAt(ast->lastToken()).offset);
737
    symbol->setVisibility(semantic()->currentObjCVisibility());
738
739
    if (ty.isDeprecated())
        symbol->setDeprecated(true);
740
741
    if (ty.isUnavailable())
        symbol->setUnavailable(true);
742
743
744

    _scope->enterSymbol(symbol);

745
746
747
    return false;
}

748
749
750
751
752
753
754
755
bool CheckDeclaration::visit(ObjCVisibilityDeclarationAST *ast)
{
    int accessSpecifier = tokenKind(ast->visibility_token);
    int visibility = semantic()->visibilityForObjCAccessSpecifier(accessSpecifier);
    semantic()->switchObjCVisibility(visibility);
    return false;
}

756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
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)
{
773
774
775
776
777
778
779
780
781
782
    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
783
    const Name *getterName = 0, *setterName = 0;
784

Roberto Raggi's avatar
Roberto Raggi committed
785
    for (ObjCPropertyAttributeListAST *iter= ast->property_attribute_list; iter; iter = iter->next) {
786
        ObjCPropertyAttributeAST *attrAst = iter->value;
787
788
789
        if (!attrAst)
            continue;

Roberto Raggi's avatar
Roberto Raggi committed
790
        const Identifier *attrId = identifier(attrAst->attribute_identifier_token);
791
        if (attrId == control()->objcGetterId()) {
792
793
            if (checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Getter)) {
                getterName = semantic()->check(attrAst->method_selector, _scope);
794
            }
795
        } else if (attrId == control()->objcSetterId()) {
796
797
            if (checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Setter)) {
                setterName = semantic()->check(attrAst->method_selector, _scope);
798
            }
799
        } else if (attrId == control()->objcReadwriteId()) {
800
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::ReadWrite);
801
        } else if (attrId == control()->objcReadonlyId()) {
802
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::ReadOnly);
803
        } else if (attrId == control()->objcAssignId()) {
804
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Assign);
805
        } else if (attrId == control()->objcRetainId()) {
806
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Retain);
807
        } else if (attrId == control()->objcCopyId()) {
808
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::Copy);
809
        } else if (attrId == control()->objcNonatomicId()) {
810
            checkPropertyAttribute(attrAst, propAttrs, ObjCPropertyDeclaration::NonAtomic);
811
812
813
        }
    }

814
815
    if (propAttrs & ObjCPropertyDeclaration::ReadOnly &&
        propAttrs & ObjCPropertyDeclaration::ReadWrite)
816
817
818
        // 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");
819
    int setterSemAttrs = propAttrs & ObjCPropertyDeclaration::SetterSemanticsMask;
820
    if (setterSemAttrs
821
822
823
            && setterSemAttrs != ObjCPropertyDeclaration::Assign
            && setterSemAttrs != ObjCPropertyDeclaration::Retain
            && setterSemAttrs != ObjCPropertyDeclaration::Copy) {
824
825
826
827
828
        // 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");
    }

829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
    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;
    }

844
845
    return false;
}
846
847
848

bool CheckDeclaration::visit(QtEnumDeclarationAST *ast)
{
849
    checkQEnumsQFlagsNames(ast->enumerator_list, "Q_ENUMS");
850
851
852
853
854
    return false;
}

bool CheckDeclaration::visit(QtFlagsDeclarationAST *ast)
{
855
    checkQEnumsQFlagsNames(ast->flag_enums_list, "Q_FLAGS");
856
857
    return false;
}
858
859
860
861
862
863
864
865
866
867
868
869
870
871

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);
    for (QtPropertyDeclarationItemListAST *iter = ast->property_declaration_items;
         iter; iter = iter->next) {
        if (iter->value)
            semantic()->check(iter->value->expression, _scope);
    }
    return false;
}
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906

void CheckDeclaration::checkQEnumsQFlagsNames(NameListAST *nameListAst,
                                              const char *declName)
{
    for (NameListAST *iter = nameListAst; iter; iter = iter->next) {
        if (!iter)
            continue;

        const Name *name = semantic()->check(iter->value, _scope);
        if (!name)
            continue;

        if (name->isNameId())
            continue;

        const QualifiedNameId *qName = name->asQualifiedNameId();
        if (!qName)
            translationUnit()->error(iter->firstToken(), "invalid name in %s",
                                     declName);
        else if (qName->isGlobal())
                translationUnit()->error(iter->firstToken(),
                                         "invalid name '%s' in %s",
                                         qName->identifier()->chars(), declName);
        else {
            for (unsigned i = 0; i < qName->nameCount(); ++i) {
                const Name *namePart = qName->nameAt(i);
                if (!namePart || !namePart->isNameId()) {
                    translationUnit()->error(iter->firstToken(),
                                             "invalid name '%s' in %s",
                                             qName->identifier()->chars(), declName);
                }
            }
        }
    }
}