forked from qt-creator/qt-creator
Moved CheckUndefinedSymbols to the cpptools plug-in.
This commit is contained in:
Roberto Raggi
531
src/plugins/cppeditor/cppcheckundefinedsymbols.cpp
Normal file
531
src/plugins/cppeditor/cppcheckundefinedsymbols.cpp
Normal file
@@ -0,0 +1,531 @@
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/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "cppcheckundefinedsymbols.h"
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#include <cplusplus/Overview.h>
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#include <Names.h>
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#include <Literals.h>
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#include <Symbols.h>
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#include <TranslationUnit.h>
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#include <Scope.h>
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#include <AST.h>
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#include <SymbolVisitor.h>
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#include <QCoreApplication>
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#include <QDebug>
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using namespace CPlusPlus;
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namespace {
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class CollectTypes: protected SymbolVisitor
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{
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Document::Ptr _doc;
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Snapshot _snapshot;
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QSet<QByteArray> _types;
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QList<ScopedSymbol *> _scopes;
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QList<NameAST *> _names;
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bool _mainDocument;
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public:
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CollectTypes(Document::Ptr doc, const Snapshot &snapshot)
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: _doc(doc), _snapshot(snapshot), _mainDocument(false)
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{
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QSet<Namespace *> processed;
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process(doc, &processed);
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}
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const QSet<QByteArray> &types() const
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{
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return _types;
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}
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const QList<ScopedSymbol *> &scopes() const
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{
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return _scopes;
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}
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static Scope *findScope(unsigned tokenOffset, const QList<ScopedSymbol *> &scopes)
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{
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for (int i = scopes.size() - 1; i != -1; --i) {
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ScopedSymbol *symbol = scopes.at(i);
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const unsigned start = symbol->startOffset();
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const unsigned end = symbol->endOffset();
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if (tokenOffset >= start && tokenOffset < end)
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return symbol->members();
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}
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return 0;
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}
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protected:
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void process(Document::Ptr doc, QSet<Namespace *> *processed)
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{
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if (! doc)
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return;
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else if (! processed->contains(doc->globalNamespace())) {
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processed->insert(doc->globalNamespace());
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foreach (const Document::Include &i, doc->includes())
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process(_snapshot.document(i.fileName()), processed);
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_mainDocument = (doc == _doc); // ### improve
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accept(doc->globalNamespace());
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}
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}
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void addType(const Identifier *id)
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{
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if (id)
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_types.insert(QByteArray::fromRawData(id->chars(), id->size()));
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}
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void addType(const Name *name)
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{
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if (! name) {
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return;
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} else if (const QualifiedNameId *q = name->asQualifiedNameId()) {
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for (unsigned i = 0; i < q->nameCount(); ++i)
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addType(q->nameAt(i));
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} else if (name->isNameId() || name->isTemplateNameId()) {
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addType(name->identifier());
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}
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}
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void addScope(ScopedSymbol *symbol)
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{
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if (_mainDocument)
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_scopes.append(symbol);
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}
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// nothing to do
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virtual bool visit(UsingNamespaceDirective *) { return true; }
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virtual bool visit(UsingDeclaration *) { return true; }
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virtual bool visit(Argument *) { return true; }
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virtual bool visit(BaseClass *) { return true; }
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virtual bool visit(Function *symbol)
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{
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for (TemplateParameters *p = symbol->templateParameters(); p; p = p->previous()) {
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Scope *scope = p->scope();
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for (unsigned i = 0; i < scope->symbolCount(); ++i)
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accept(scope->symbolAt(i));
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}
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addScope(symbol);
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return true;
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}
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virtual bool visit(Block *symbol)
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{
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addScope(symbol);
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return true;
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}
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virtual bool visit(NamespaceAlias *symbol)
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{
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addType(symbol->name());
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return true;
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}
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virtual bool visit(Declaration *symbol)
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{
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if (symbol->isTypedef())
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addType(symbol->name());
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return true;
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}
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virtual bool visit(TypenameArgument *symbol)
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{
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addType(symbol->name());
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return true;
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}
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virtual bool visit(Enum *symbol)
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{
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addScope(symbol);
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addType(symbol->name());
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return true;
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}
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virtual bool visit(Namespace *symbol)
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{
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addScope(symbol);
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addType(symbol->name());
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return true;
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}
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virtual bool visit(Class *symbol)
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{
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for (TemplateParameters *p = symbol->templateParameters(); p; p = p->previous()) {
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Scope *scope = p->scope();
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for (unsigned i = 0; i < scope->symbolCount(); ++i)
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accept(scope->symbolAt(i));
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}
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addScope(symbol);
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addType(symbol->name());
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return true;
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}
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virtual bool visit(ForwardClassDeclaration *symbol)
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{
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for (TemplateParameters *p = symbol->templateParameters(); p; p = p->previous()) {
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Scope *scope = p->scope();
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for (unsigned i = 0; i < scope->symbolCount(); ++i)
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accept(scope->symbolAt(i));
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}
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addType(symbol->name());
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return true;
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}
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// Objective-C
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virtual bool visit(ObjCBaseClass *) { return true; }
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virtual bool visit(ObjCBaseProtocol *) { return true; }
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virtual bool visit(ObjCPropertyDeclaration *) { return true; }
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virtual bool visit(ObjCMethod *symbol)
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{
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addScope(symbol);
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return true;
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}
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virtual bool visit(ObjCClass *symbol)
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{
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addScope(symbol);
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addType(symbol->name());
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return true;
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}
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virtual bool visit(ObjCForwardClassDeclaration *symbol)
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{
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addType(symbol->name());
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return true;
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}
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virtual bool visit(ObjCProtocol *symbol)
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{
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addScope(symbol);
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addType(symbol->name());
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return true;
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}
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virtual bool visit(ObjCForwardProtocolDeclaration *symbol)
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{
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addType(symbol->name());
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return true;
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}
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};
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} // end of anonymous namespace
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CheckUndefinedSymbols::CheckUndefinedSymbols(TranslationUnit *unit, const LookupContext &context)
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: ASTVisitor(unit), _context(context)
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{
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_fileName = context.thisDocument()->fileName();
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CollectTypes collectTypes(context.thisDocument(), context.snapshot());
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_potentialTypes = collectTypes.types();
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_scopes = collectTypes.scopes();
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}
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CheckUndefinedSymbols::~CheckUndefinedSymbols()
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{ }
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QList<Document::DiagnosticMessage> CheckUndefinedSymbols::operator()(AST *ast)
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{
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_diagnosticMessages.clear();
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accept(ast);
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return _diagnosticMessages;
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}
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bool CheckUndefinedSymbols::warning(unsigned line, unsigned column, const QString &text, unsigned length)
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{
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Document::DiagnosticMessage m(Document::DiagnosticMessage::Warning, _fileName, line, column, text, length);
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_diagnosticMessages.append(m);
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return false;
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}
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bool CheckUndefinedSymbols::warning(AST *ast, const QString &text)
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{
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const Token &firstToken = tokenAt(ast->firstToken());
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const Token &lastToken = tokenAt(ast->lastToken() - 1);
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const unsigned length = lastToken.end() - firstToken.begin();
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unsigned line = 1, column = 1;
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getTokenStartPosition(ast->firstToken(), &line, &column);
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warning(line, column, text, length);
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return false;
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}
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bool CheckUndefinedSymbols::visit(NamespaceAST *ast)
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{
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if (ast->identifier_token) {
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const Token &tok = tokenAt(ast->identifier_token);
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if (! tok.generated()) {
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unsigned line, column;
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getTokenStartPosition(ast->identifier_token, &line, &column);
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Use use(line, column, tok.length());
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_typeUsages.append(use);
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}
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}
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return true;
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}
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bool CheckUndefinedSymbols::visit(UsingDirectiveAST *)
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{
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return true;
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}
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bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *)
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{
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return true;
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}
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bool CheckUndefinedSymbols::visit(NamedTypeSpecifierAST *)
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{
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return true;
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}
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void CheckUndefinedSymbols::checkNamespace(NameAST *name)
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{
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if (! name)
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return;
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unsigned line, column;
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getTokenStartPosition(name->firstToken(), &line, &column);
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Scope *enclosingScope = _context.thisDocument()->scopeAt(line, column);
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if (ClassOrNamespace *b = _context.lookupType(name->name, enclosingScope)) {
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foreach (Symbol *s, b->symbols()) {
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if (s->isNamespace())
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return;
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}
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}
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const unsigned length = tokenAt(name->lastToken() - 1).end() - tokenAt(name->firstToken()).begin();
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warning(line, column, QCoreApplication::translate("CheckUndefinedSymbols", "Expected a namespace-name"), length);
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}
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void CheckUndefinedSymbols::checkName(NameAST *ast)
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{
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if (ast->name) {
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if (const Identifier *ident = ast->name->identifier()) {
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const QByteArray id = QByteArray::fromRawData(ident->chars(), ident->size());
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if (_potentialTypes.contains(id)) {
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Scope *scope = findScope(ast);
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const QList<Symbol *> candidates = _context.lookup(ast->name, scope);
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addTypeUsage(candidates, ast);
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}
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}
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}
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}
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bool CheckUndefinedSymbols::visit(SimpleNameAST *ast)
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{
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checkName(ast);
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return true;
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}
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bool CheckUndefinedSymbols::visit(TemplateIdAST *ast)
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{
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checkName(ast);
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return true;
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}
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bool CheckUndefinedSymbols::visit(DestructorNameAST *ast)
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{
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checkName(ast);
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return true;
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}
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bool CheckUndefinedSymbols::visit(QualifiedNameAST *ast)
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{
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if (ast->name) {
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Scope *scope = findScope(ast);
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ClassOrNamespace *b = 0;
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if (NestedNameSpecifierListAST *it = ast->nested_name_specifier_list) {
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NestedNameSpecifierAST *nested_name_specifier = it->value;
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if (NameAST *class_or_namespace_name = nested_name_specifier->class_or_namespace_name) { // ### remove shadowing
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if (TemplateIdAST *template_id = class_or_namespace_name->asTemplateId())
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accept(template_id->template_argument_list);
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const Name *name = class_or_namespace_name->name;
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b = _context.lookupType(name, scope);
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addTypeUsage(b, class_or_namespace_name);
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for (it = it->next; b && it; it = it->next) {
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NestedNameSpecifierAST *nested_name_specifier = it->value;
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if (NameAST *class_or_namespace_name = nested_name_specifier->class_or_namespace_name) {
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if (TemplateIdAST *template_id = class_or_namespace_name->asTemplateId())
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accept(template_id->template_argument_list);
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b = b->findType(class_or_namespace_name->name);
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addTypeUsage(b, class_or_namespace_name);
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}
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}
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}
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}
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if (b && ast->unqualified_name)
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addTypeUsage(b->find(ast->unqualified_name->name), ast->unqualified_name);
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}
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return false;
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}
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bool CheckUndefinedSymbols::visit(TypenameTypeParameterAST *ast)
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{
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if (ast->name && ast->name->name) {
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if (const Identifier *templId = ast->name->name->identifier()) {
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const QByteArray id = QByteArray::fromRawData(templId->chars(), templId->size());
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if (_potentialTypes.contains(id)) {
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Scope *scope = findScope(_templateDeclarationStack.back());
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const QList<Symbol *> candidates = _context.lookup(ast->name->name, scope);
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addTypeUsage(candidates, ast->name);
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}
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}
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}
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return true;
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}
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bool CheckUndefinedSymbols::visit(TemplateTypeParameterAST *ast)
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{
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checkName(ast->name);
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return true;
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}
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bool CheckUndefinedSymbols::visit(TemplateDeclarationAST *ast)
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{
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_templateDeclarationStack.append(ast);
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return true;
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}
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void CheckUndefinedSymbols::endVisit(TemplateDeclarationAST *)
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{
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_templateDeclarationStack.takeFirst();
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}
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void CheckUndefinedSymbols::addTypeUsage(ClassOrNamespace *b, NameAST *ast)
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{
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if (! b)
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return;
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unsigned startToken = ast->firstToken();
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if (DestructorNameAST *dtor = ast->asDestructorName())
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startToken = dtor->identifier_token;
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const Token &tok = tokenAt(startToken);
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if (tok.generated())
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return;
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unsigned line, column;
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getTokenStartPosition(startToken, &line, &column);
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const unsigned length = tok.length();
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Use use(line, column, length);
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_typeUsages.append(use);
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//qDebug() << "added use" << oo(ast->name) << line << column << length;
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}
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void CheckUndefinedSymbols::addTypeUsage(const QList<Symbol *> &candidates, NameAST *ast)
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{
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unsigned startToken = ast->firstToken();
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if (DestructorNameAST *dtor = ast->asDestructorName())
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startToken = dtor->identifier_token;
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const Token &tok = tokenAt(startToken);
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if (tok.generated())
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return;
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unsigned line, column;
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getTokenStartPosition(startToken, &line, &column);
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const unsigned length = tok.length();
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foreach (Symbol *c, candidates) {
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if (c->isUsingDeclaration()) // skip using declarations...
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continue;
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else if (c->isUsingNamespaceDirective()) // ... and using namespace directives.
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continue;
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else if (c->isTypedef() || c->isNamespace() ||
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c->isClass() || c->isEnum() ||
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c->isForwardClassDeclaration() || c->isTypenameArgument()) {
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Use use(line, column, length);
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_typeUsages.append(use);
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//qDebug() << "added use" << oo(ast->name) << line << column << length;
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break;
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}
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}
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}
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QList<CheckUndefinedSymbols::Use> CheckUndefinedSymbols::typeUsages() const
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{
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return _typeUsages;
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}
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unsigned CheckUndefinedSymbols::startOfTemplateDeclaration(TemplateDeclarationAST *ast) const
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{
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if (ast->declaration) {
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if (TemplateDeclarationAST *templ = ast->declaration->asTemplateDeclaration())
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return startOfTemplateDeclaration(templ);
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return ast->declaration->firstToken();
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}
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return ast->firstToken();
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}
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Scope *CheckUndefinedSymbols::findScope(AST *ast) const
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{
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Scope *scope = 0;
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if (ast) {
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unsigned startToken = ast->firstToken();
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if (TemplateDeclarationAST *templ = ast->asTemplateDeclaration())
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startToken = startOfTemplateDeclaration(templ);
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const unsigned tokenOffset = tokenAt(startToken).offset;
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scope = CollectTypes::findScope(tokenOffset, _scopes);
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}
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if (! scope)
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scope = _context.thisDocument()->globalSymbols();
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return scope;
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}
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||||
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Block a user