Initial work on the binding pass.

src/libs/cplusplus/CppBindings.cpp

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (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 qt-sales@nokia.com.
+**
+**************************************************************************/
+
+#include "CppBindings.h"
+#include "CppDocument.h"
+#include "Overview.h"
+
+#include <CoreTypes.h>
+#include <Symbols.h>
+#include <Literals.h>
+#include <Names.h>
+#include <Scope.h>
+#include <Control.h>
+#include <SymbolVisitor.h>
+
+#include <QtDebug>
+
+using namespace CPlusPlus;
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Location
+////////////////////////////////////////////////////////////////////////////////
+Location::Location()
+    : _fileId(0),
+      _sourceLocation(0)
+{ }
+
+Location::Location(Symbol *symbol)
+    : _fileId(symbol->fileId()),
+      _sourceLocation(symbol->sourceLocation())
+{ }
+
+Location::Location(StringLiteral *fileId, unsigned sourceLocation)
+    : _fileId(fileId), _sourceLocation(sourceLocation)
+{ }
+
+////////////////////////////////////////////////////////////////////////////////
+// NamespaceBinding
+////////////////////////////////////////////////////////////////////////////////
+
+NamespaceBinding::NamespaceBinding(NamespaceBinding *parent)
+    : parent(parent),
+      anonymousNamespaceBinding(0)
+{
+    if (parent)
+        parent->children.append(this);
+}
+
+NamespaceBinding::~NamespaceBinding()
+{
+    qDeleteAll(children);
+    qDeleteAll(classBindings);
+}
+
+NameId *NamespaceBinding::name() const
+{
+    if (symbols.size()) {
+        if (Name *name = symbols.at(0)->name()) {
+            NameId *nameId = name->asNameId();
+            Q_ASSERT(nameId != 0);
+
+            return nameId;
+        }
+    }
+
+    return 0;
+}
+
+Identifier *NamespaceBinding::identifier() const
+{
+    if (NameId *nameId = name())
+        return nameId->identifier();
+
+    return 0;
+}
+
+NamespaceBinding *NamespaceBinding::globalNamespaceBinding()
+{
+    NamespaceBinding *it = this;
+
+    for (; it; it = it->parent) {
+        if (! it->parent)
+            break;
+    }
+
+    return it;
+}
+
+NamespaceBinding *NamespaceBinding::findNamespaceBinding(Name *name)
+{
+    if (! name)
+        return anonymousNamespaceBinding;
+
+    else if (NameId *nameId = name->asNameId())
+        return findNamespaceBindingForNameId(nameId);
+
+    // invalid binding
+    return 0;
+}
+
+NamespaceBinding *NamespaceBinding::findNamespaceBindingForNameId(NameId *name)
+{
+    foreach (NamespaceBinding *binding, children) {
+        Name *bindingName = binding->name();
+
+        if (! bindingName)
+            continue;
+
+        if (NameId *bindingNameId = bindingName->asNameId()) {
+            if (name->isEqualTo(bindingNameId))
+                return binding;
+        }
+    }
+
+    return 0;
+}
+
+NamespaceBinding *NamespaceBinding::findOrCreateNamespaceBinding(Namespace *symbol)
+{
+    if (NamespaceBinding *binding = findNamespaceBinding(symbol->name())) {
+        int index = 0;
+
+        for (; index < binding->symbols.size(); ++index) {
+            Namespace *ns = binding->symbols.at(index);
+
+            if (ns == symbol)
+                break;
+        }
+
+        if (index == binding->symbols.size())
+            binding->symbols.append(symbol);
+
+        return binding;
+    }
+
+    NamespaceBinding *binding = new NamespaceBinding(this);
+    binding->symbols.append(symbol);
+
+    if (! symbol->name()) {
+        Q_ASSERT(! anonymousNamespaceBinding);
+
+        anonymousNamespaceBinding = binding;
+    }
+
+    return binding;
+}
+
+static void closure(const Location &loc,
+                    NamespaceBinding *binding, Name *name,
+                    QList<NamespaceBinding *> *bindings)
+{
+    if (bindings->contains(binding))
+        return;
+
+    bindings->append(binding);
+
+    Q_ASSERT(name->isNameId());
+
+    Identifier *id = name->asNameId()->identifier();
+    bool ignoreUsingDirectives = false;
+
+    foreach (Namespace *symbol, binding->symbols) {
+        Scope *scope = symbol->members();
+
+        for (Symbol *symbol = scope->lookat(id); symbol; symbol = symbol->next()) {
+            if (symbol->name() != name || ! symbol->isNamespace())
+                continue;
+
+            const Location l(symbol);
+
+            if (l.fileId() == loc.fileId() && l.sourceLocation() < loc.sourceLocation()) {
+                ignoreUsingDirectives = true;
+                break;
+            }
+        }
+    }
+
+    if (ignoreUsingDirectives)
+        return;
+
+    foreach (NamespaceBinding *u, binding->usings)
+        closure(loc, u, name, bindings);
+}
+
+
+NamespaceBinding *NamespaceBinding::resolveNamespace(const Location &loc,
+                                                     Name *name,
+                                                     bool lookAtParent)
+{
+    if (! name)
+        return 0;
+
+    else if (NameId *nameId = name->asNameId()) {
+        QList<NamespaceBinding *> bindings;
+        closure(loc, this, nameId, &bindings);
+
+        QList<NamespaceBinding *> results;
+
+        foreach (NamespaceBinding *binding, bindings) {
+            if (NamespaceBinding *b = binding->findNamespaceBinding(nameId))
+                results.append(b);
+        }
+
+        if (results.size() == 1)
+            return results.at(0);
+
+        else if (results.size() > 1) {
+            // ### FIXME: return 0;
+            return results.at(0);
+        }
+
+        else if (parent && lookAtParent)
+            return parent->resolveNamespace(loc, name);
+
+    } else if (QualifiedNameId *q = name->asQualifiedNameId()) {
+        if (q->nameCount() == 1) {
+            Q_ASSERT(q->isGlobal());
+
+            return globalNamespaceBinding()->resolveNamespace(loc, q->nameAt(0));
+        }
+
+        NamespaceBinding *current = this;
+        if (q->isGlobal())
+            current = globalNamespaceBinding();
+
+        current = current->resolveNamespace(loc, q->nameAt(0));
+        for (unsigned i = 1; current && i < q->nameCount(); ++i)
+            current = current->resolveNamespace(loc, q->nameAt(i), false);
+
+        return current;
+    }
+
+    return 0;
+}
+
+// ### rewrite me
+QByteArray NamespaceBinding::qualifiedId() const
+{
+    if (! parent)
+        return "<root>";
+
+    QByteArray s;
+
+    s.append(parent->qualifiedId());
+    s.append("::");
+
+    if (Identifier *id = identifier())
+        s.append(id->chars(), id->size());
+
+    else
+        s.append("<anonymous>");
+
+    return s;
+}
+
+// ### rewrite me
+QByteArray ClassBinding::qualifiedId() const
+{
+    QByteArray s = parent->qualifiedId();
+    s += "::";
+
+    if (Identifier *id = identifier())
+        s.append(id->chars(), id->size());
+
+    else
+        s.append("<anonymous>");
+
+    return s;
+}
+
+static int depth;
+
+void NamespaceBinding::dump()
+{
+    qDebug() << QByteArray(depth, ' ').constData() << "namespace" << qualifiedId().constData()
+              << " # " << symbols.size();
+
+    ++depth;
+
+    foreach (ClassBinding *classBinding, classBindings) {
+        classBinding->dump();
+    }
+
+    foreach (NamespaceBinding *child, children) {
+        child->dump();
+    }
+
+    --depth;
+}
+
+void ClassBinding::dump()
+{
+    qDebug() << QByteArray(depth, ' ').constData() << "class" << qualifiedId().constData()
+              << " # " << symbols.size();
+
+    ++depth;
+
+    foreach (ClassBinding *classBinding, children) {
+        classBinding->dump();
+    }
+
+    --depth;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// ClassBinding
+////////////////////////////////////////////////////////////////////////////////
+ClassBinding::ClassBinding(NamespaceBinding *parent)
+    : parent(parent)
+{
+    parent->classBindings.append(this);
+}
+
+ClassBinding::ClassBinding(ClassBinding *parentClass)
+{
+    parent = parentClass->parent;
+    parentClass->children.append(this);
+}
+
+ClassBinding::~ClassBinding()
+{ qDeleteAll(children); }
+
+NameId *ClassBinding::name() const
+{
+    if (symbols.size()) {
+        if (Name *name = symbols.at(0)->name()) {
+            NameId *nameId = name->asNameId();
+            return nameId;
+        }
+    }
+
+    return 0;
+}
+
+Identifier *ClassBinding::identifier() const
+{
+    if (NameId *nameId = name())
+        return nameId->identifier();
+
+    return 0;
+}
+
+namespace {
+
+////////////////////////////////////////////////////////////////////////////////
+// Binder
+////////////////////////////////////////////////////////////////////////////////
+
+class Binder: protected SymbolVisitor
+{
+public:
+    Binder(NamespaceBinding *globals);
+    virtual ~Binder();
+
+    NamespaceBinding *operator()(Document::Ptr doc, const Snapshot &snapshot)
+    {
+        namespaceBinding = _globals;
+        const Snapshot previousSnapshot = _snapshot;
+
+        _snapshot = snapshot;
+        (void) bind(doc);
+        _snapshot = previousSnapshot;
+
+        return _globals;
+    }
+
+    Snapshot _snapshot;
+
+protected:
+    NamespaceBinding *bind(Document::Ptr doc)
+    {
+        QSet<QString> processed;
+        return bind(doc, &processed);
+    }
+
+    NamespaceBinding *bind(Document::Ptr doc, QSet<QString> *processed)
+    {
+        if (processed->contains(doc->fileName()))
+            return 0;
+
+        processed->insert(doc->fileName());
+
+        foreach (const Document::Include &i, doc->includes()) {
+            if (Document::Ptr includedDoc = _snapshot.value(i.fileName())) {
+                /*NamepaceBinding *binding = */ bind(includedDoc, processed);
+            }
+        }
+
+        Namespace *ns = doc->globalNamespace();
+        _globals->symbols.append(ns);
+
+        for (unsigned i = 0; i < ns->memberCount(); ++i) {
+            (void) bind(ns->memberAt(i), _globals);
+        }
+
+        return _globals;
+    }
+
+    NamespaceBinding *bind(Symbol *symbol, NamespaceBinding *binding);
+    NamespaceBinding *findOrCreateNamespaceBinding(Namespace *symbol);
+    NamespaceBinding *resolveNamespace(const Location &loc, Name *name);
+
+    NamespaceBinding *switchNamespaceBinding(NamespaceBinding *binding);
+
+    ClassBinding *findOrCreateClassBinding(Class *classSymbol);
+    ClassBinding *findClassBinding(Name *name);
+
+    ClassBinding *switchClassBinding(ClassBinding *binding);
+
+    using SymbolVisitor::visit;
+
+    virtual bool visit(Namespace *);
+    virtual bool visit(UsingNamespaceDirective *);
+    virtual bool visit(Class *);
+    virtual bool visit(Function *);
+    virtual bool visit(Block *);
+
+private:
+    NamespaceBinding *_globals;
+    NamespaceBinding *namespaceBinding;
+    ClassBinding *classBinding;
+};
+
+Binder::Binder(NamespaceBinding *globals)
+    : _globals(globals),
+      namespaceBinding(0),
+      classBinding(0)
+{ }
+
+Binder::~Binder()
+{ }
+
+NamespaceBinding *Binder::bind(Symbol *symbol, NamespaceBinding *binding)
+{
+    NamespaceBinding *previousBinding = switchNamespaceBinding(binding);
+    accept(symbol);
+    return switchNamespaceBinding(previousBinding);
+}
+
+NamespaceBinding *Binder::findOrCreateNamespaceBinding(Namespace *symbol)
+{ return namespaceBinding->findOrCreateNamespaceBinding(symbol); }
+
+NamespaceBinding *Binder::resolveNamespace(const Location &loc, Name *name)
+{
+    if (! namespaceBinding)
+        return 0;
+
+    return namespaceBinding->resolveNamespace(loc, name);
+}
+
+NamespaceBinding *Binder::switchNamespaceBinding(NamespaceBinding *binding)
+{
+    NamespaceBinding *previousBinding = namespaceBinding;
+    namespaceBinding = binding;
+    return previousBinding;
+}
+
+ClassBinding *Binder::findOrCreateClassBinding(Class *classSymbol)
+{
+    ClassBinding *binding = 0;
+
+    if (classBinding)
+        binding = new ClassBinding(classBinding);
+    else
+        binding = new ClassBinding(namespaceBinding);
+
+    binding->symbols.append(classSymbol);
+    return binding;
+}
+
+ClassBinding *Binder::findClassBinding(Name *name)
+{
+    qDebug() << Q_FUNC_INFO;
+    return 0;
+}
+
+ClassBinding *Binder::switchClassBinding(ClassBinding *binding)
+{
+    ClassBinding *previousClassBinding = classBinding;
+    classBinding = binding;
+    return previousClassBinding;
+}
+
+bool Binder::visit(Namespace *symbol)
+{
+    NamespaceBinding *binding = findOrCreateNamespaceBinding(symbol);
+
+    for (unsigned i = 0; i < symbol->memberCount(); ++i) {
+        Symbol *member = symbol->memberAt(i);
+
+        bind(member, binding);
+    }
+
+    return false;
+}
+
+bool Binder::visit(UsingNamespaceDirective *u)
+{
+    NamespaceBinding *resolved = resolveNamespace(Location(u), u->name());
+
+    if (! resolved)
+        return false;
+
+    namespaceBinding->usings.append(resolved);
+
+    return false;
+}
+
+bool Binder::visit(Class *classSymbol)
+{
+    Overview oo;
+
+    ClassBinding *binding = findOrCreateClassBinding(classSymbol);
+    ClassBinding *previousClassBinding = switchClassBinding(binding);
+
+#if 0
+    for (unsigned i = 0; i < classSymbol->baseClassCount(); ++i) {
+        BaseClass *baseClass = classSymbol->baseClassAt(i);
+
+        ClassBinding *baseClassBinding = findClassBinding(baseClass->name());
+
+        // ### wrong
+        binding->baseClassBindings.append(baseClassBinding);
+    }
+#endif
+
+    for (unsigned i = 0; i < classSymbol->memberCount(); ++i)
+        accept(classSymbol->memberAt(i));
+
+    (void) switchClassBinding(previousClassBinding);
+
+    return false;
+}
+
+bool Binder::visit(Function *)
+{ return false; }
+
+bool Binder::visit(Block *)
+{ return false; }
+
+} // end of anonymous namespace
+

src/libs/cplusplus/CppBindings.h

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (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 qt-sales@nokia.com.
+**
+**************************************************************************/
+
+#ifndef CPPBINDINGS_H
+#define CPPBINDINGS_H
+
+#include <CPlusPlusForwardDeclarations.h>
+
+#include <QtCore/QList>
+#include <QtCore/QSharedPointer>
+#include <QtCore/QString>
+#include <QtCore/QByteArray>
+
+namespace CPlusPlus {
+
+class Location;
+class Binding;
+class NamespaceBinding;
+class ClassBinding;
+
+typedef QSharedPointer<Binding> BindingPtr;
+typedef QSharedPointer<ClassBinding> ClassBindingPtr;
+typedef QSharedPointer<NamespaceBinding> NamespaceBindingPtr;
+
+class CPLUSPLUS_EXPORT Location
+{
+public:
+    Location();
+    Location(Symbol *symbol);
+    Location(StringLiteral *fileId, unsigned sourceLocation);
+
+    inline bool isValid() const
+    { return _fileId != 0; }
+
+    inline operator bool() const
+    { return _fileId != 0; }
+
+    inline StringLiteral *fileId() const
+    { return _fileId; }
+
+    inline unsigned sourceLocation() const
+    { return _sourceLocation; }
+
+private:
+    StringLiteral *_fileId;
+    unsigned _sourceLocation;
+};
+
+class CPLUSPLUS_EXPORT Binding
+{
+    Q_DISABLE_COPY(Binding)
+
+public:
+    Binding() {}
+    virtual ~Binding() {}
+
+    virtual NamespaceBinding *asNamespaceBinding() { return 0; }
+    virtual ClassBinding *asClassBinding() { return 0; }
+};
+
+class CPLUSPLUS_EXPORT NamespaceBinding: public Binding
+{
+public:
+    /// Constructs a binding with the given parent.
+    NamespaceBinding(NamespaceBinding *parent = 0);
+
+    /// Destroys the binding.
+    virtual ~NamespaceBinding();
+
+    /// Returns this binding's name.
+    NameId *name() const;
+
+    /// Returns this binding's identifier.
+    Identifier *identifier() const;
+
+    /// Returns the binding for the global namespace (aka ::).
+    NamespaceBinding *globalNamespaceBinding();
+
+    /// Returns the binding for the given namespace symbol.
+    NamespaceBinding *findNamespaceBinding(Name *name);
+
+    /// Returns the binding associated with the given symbol.
+    NamespaceBinding *findOrCreateNamespaceBinding(Namespace *symbol);
+
+    NamespaceBinding *resolveNamespace(const Location &loc,
+                                       Name *name,
+                                       bool lookAtParent = true);
+
+    /// Helpers.
+    QByteArray qualifiedId() const;
+    void dump();
+
+    virtual NamespaceBinding *asNamespaceBinding() { return this; }
+
+private:
+    NamespaceBinding *findNamespaceBindingForNameId(NameId *name);
+
+public: // attributes
+    /// This binding's parent.
+    NamespaceBinding *parent;
+
+    /// Binding for anonymous namespace symbols.
+    NamespaceBinding *anonymousNamespaceBinding;
+
+    /// This binding's connections.
+    QList<NamespaceBinding *> children;
+
+    /// This binding's list of using namespaces.
+    QList<NamespaceBinding *> usings;
+
+    /// This binding's namespace symbols.
+    QList<Namespace *> symbols;
+
+    QList<ClassBinding *> classBindings;
+};
+
+class CPLUSPLUS_EXPORT ClassBinding: public Binding
+{
+public:
+    ClassBinding(NamespaceBinding *parent);
+    ClassBinding(ClassBinding *parentClass);
+    virtual ~ClassBinding();
+
+    virtual ClassBinding *asClassBinding() { return this; }
+
+    /// Returns this binding's name.
+    NameId *name() const;
+
+    /// Returns this binding's identifier.
+    Identifier *identifier() const;
+
+    QByteArray qualifiedId() const;
+
+    void dump();
+
+public: // attributes
+    NamespaceBinding *parent;
+
+    QList<ClassBinding *> children;
+
+    /// This binding's class symbols.
+    QList<Class *> symbols;
+
+    /// Bindings for the base classes.
+    QList<ClassBinding *> baseClassBindings;
+};
+
+} // end of namespace CPlusPlus
+
+#endif // CPPBINDINGS_H

src/libs/cplusplus/cplusplus-lib.pri

@@ -26,6 +26,7 @@ HEADERS += \
     $$PWD/TypePrettyPrinter.h \
     $$PWD/ResolveExpression.h \
     $$PWD/LookupContext.h \
+    $$PWD/CppBindings.h \
     $$PWD/PreprocessorClient.h \
     $$PWD/PreprocessorEnvironment.h \
     $$PWD/Macro.h \
@@ -44,6 +45,7 @@ SOURCES += \
     $$PWD/TypePrettyPrinter.cpp \
     $$PWD/ResolveExpression.cpp \
     $$PWD/LookupContext.cpp \
+    $$PWD/CppBindings.cpp \
     $$PWD/PreprocessorClient.cpp \
     $$PWD/PreprocessorEnvironment.cpp \
     $$PWD/Macro.cpp \