Introduced CPlusPlus::FindUsages.

src/libs/cplusplus/FindUsages.h

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** 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.
+**
+** GNU Lesser General Public License Usage
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#ifndef FINDUSAGES_H
+#define FINDUSAGES_H
+
+#include "LookupContext.h"
+#include "CppDocument.h"
+#include "CppBindings.h"
+#include "Semantic.h"
+
+#include <ASTVisitor.h>
+#include <QtCore/QFutureInterface>
+
+namespace CPlusPlus {
+
+class CPLUSPLUS_EXPORT Usage
+{
+public:
+    Usage()
+        : line(0), col(0), len(0) {}
+
+    Usage(const QString &path, int line, const QString &lineText, int col, int len)
+        : path(path), line(line), lineText(lineText), col(col), len(len) {}
+
+public:
+    QString path;
+    int line;
+    QString lineText;
+    int col;
+    int len;
+};
+
+class CPLUSPLUS_EXPORT FindUsages: protected ASTVisitor
+{
+public:
+    FindUsages(Document::Ptr doc, const Snapshot &snapshot, QFutureInterface<Usage> *future);
+
+    void setGlobalNamespaceBinding(NamespaceBindingPtr globalNamespaceBinding);
+
+    QList<int> operator()(Symbol *symbol, Identifier *id, AST *ast);
+
+protected:
+    using ASTVisitor::visit;
+    using ASTVisitor::endVisit;
+
+    QString matchingLine(const Token &tk) const;
+
+    void reportResult(unsigned tokenIndex, const QList<Symbol *> &candidates);
+    void reportResult(unsigned tokenIndex);
+
+    bool checkSymbol(Symbol *symbol) const;
+    bool checkCandidates(const QList<Symbol *> &candidates) const;
+    bool checkScope(Symbol *symbol, Symbol *otherSymbol) const;
+    void checkExpression(unsigned startToken, unsigned endToken);
+
+    LookupContext currentContext(AST *ast);
+
+    void ensureNameIsValid(NameAST *ast);
+
+    virtual bool visit(MemInitializerAST *ast);
+    virtual bool visit(PostfixExpressionAST *ast);
+    virtual void endVisit(PostfixExpressionAST *);
+    virtual bool visit(MemberAccessAST *ast);
+    virtual bool visit(QualifiedNameAST *ast);
+    virtual bool visit(EnumeratorAST *ast);
+    virtual bool visit(SimpleNameAST *ast);
+    virtual bool visit(DestructorNameAST *ast);
+    virtual bool visit(TemplateIdAST *ast);
+    virtual bool visit(ParameterDeclarationAST *ast);
+    virtual bool visit(ExpressionOrDeclarationStatementAST *ast);
+    virtual bool visit(FunctionDeclaratorAST *ast);
+    virtual bool visit(SimpleDeclarationAST *);
+    virtual void endVisit(SimpleDeclarationAST *);
+
+private:
+    QFutureInterface<Usage> *_future;
+    Identifier *_id;
+    Symbol *_declSymbol;
+    Document::Ptr _doc;
+    Snapshot _snapshot;
+    QByteArray _source;
+    Document::Ptr _exprDoc;
+    Semantic _sem;
+    NamespaceBindingPtr _globalNamespaceBinding;
+    QList<PostfixExpressionAST *> _postfixExpressionStack;
+    QList<QualifiedNameAST *> _qualifiedNameStack;
+    QList<int> _references;
+    LookupContext _previousContext;
+    int _inSimpleDeclaration;
+};
+
+} // end of namespace CPlusPlus
+
+#endif // FINDUSAGES_H

src/libs/cplusplus/cplusplus-lib.pri

@@ -38,6 +38,7 @@ HEADERS += \
     $$PWD/CppBindings.h \
     $$PWD/ASTParent.h \
     $$PWD/GenTemplateInstance.h \
+    $$PWD/FindUsages.h \
     $$PWD/CheckUndefinedSymbols.h \
     $$PWD/PreprocessorClient.h \
     $$PWD/PreprocessorEnvironment.h \
@@ -61,6 +62,7 @@ SOURCES += \
     $$PWD/CppBindings.cpp \
     $$PWD/ASTParent.cpp \
     $$PWD/GenTemplateInstance.cpp \
+    $$PWD/FindUsages.cpp \
     $$PWD/CheckUndefinedSymbols.cpp \
     $$PWD/PreprocessorClient.cpp \
     $$PWD/PreprocessorEnvironment.cpp \

src/plugins/cpptools/cppfindreferences.h

@@ -42,6 +42,10 @@ namespace Find {
     struct SearchResultItem;
 } // end of namespace Find
 
+namespace CPlusPlus {
+    class Usage;
+} // end of namespace CPlusPlus
+
 namespace CppTools {
 class CppModelManagerInterface;
 
@@ -78,7 +82,7 @@ private:
 private:
     QPointer<CppModelManagerInterface> _modelManager;
     Find::SearchResultWindow *_resultWindow;
-    QFutureWatcher<Utils::FileSearchResult> m_watcher;
+    QFutureWatcher<CPlusPlus::Usage> m_watcher;
 };
 
 } // end of namespace Internal