diff -r 000000000000 -r 876b1a06bc25 tools/icheck/parser/src/libs/cplusplus/CheckUndefinedSymbols.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/icheck/parser/src/libs/cplusplus/CheckUndefinedSymbols.cpp	Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,553 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "CheckUndefinedSymbols.h"
+#include "Overview.h"
+
+#include <Names.h>
+#include <Literals.h>
+#include <Symbols.h>
+#include <TranslationUnit.h>
+#include <Scope.h>
+#include <AST.h>
+
+using namespace CPlusPlus;
+
+
+CheckUndefinedSymbols::CheckUndefinedSymbols(Document::Ptr doc)
+    : ASTVisitor(doc->translationUnit()), _doc(doc)
+{ }
+
+CheckUndefinedSymbols::~CheckUndefinedSymbols()
+{ }
+
+void CheckUndefinedSymbols::setGlobalNamespaceBinding(NamespaceBindingPtr globalNamespaceBinding)
+{
+    _globalNamespaceBinding = globalNamespaceBinding;
+    _types.clear();
+    _protocols.clear();
+
+    if (_globalNamespaceBinding) {
+        QSet<NamespaceBinding *> processed;
+        buildTypeMap(_globalNamespaceBinding.data(), &processed);
+    }
+}
+
+void CheckUndefinedSymbols::operator()(AST *ast)
+{ accept(ast); }
+
+QByteArray CheckUndefinedSymbols::templateParameterName(NameAST *ast) const
+{
+    if (ast && ast->name) {
+        if (const Identifier *id = ast->name->identifier())
+            return QByteArray::fromRawData(id->chars(), id->size());
+    }
+
+    return QByteArray();
+}
+
+QByteArray CheckUndefinedSymbols::templateParameterName(DeclarationAST *ast) const
+{
+    if (ast) {
+        if (TypenameTypeParameterAST *d = ast->asTypenameTypeParameter())
+            return templateParameterName(d->name);
+        else if (TemplateTypeParameterAST *d = ast->asTemplateTypeParameter())
+            return templateParameterName(d->name);
+        else if (ParameterDeclarationAST *d = ast->asParameterDeclaration()) {
+            if (d->symbol) {
+                if (const Identifier *id = d->symbol->identifier())
+                    return QByteArray::fromRawData(id->chars(), id->size());
+            }
+        }
+    }
+    return QByteArray();
+}
+
+bool CheckUndefinedSymbols::isType(const QByteArray &name) const
+{
+    for (int i = _compoundStatementStack.size() - 1; i != -1; --i) {
+        Scope *members = _compoundStatementStack.at(i)->symbol->members();
+
+        for (unsigned m = 0; m < members->symbolCount(); ++m) {
+            Symbol *member = members->symbolAt(m);
+
+            if (member->isTypedef() && member->isDeclaration()) {
+                if (const Identifier *id = member->identifier()) {
+                    if (name == id->chars())
+                        return true;
+                }
+            }
+        }
+    }
+
+    for (int i = _templateDeclarationStack.size() - 1; i != - 1; --i) {
+        TemplateDeclarationAST *templateDeclaration = _templateDeclarationStack.at(i);
+
+        for (DeclarationListAST *it = templateDeclaration->template_parameter_list; it; it = it->next) {
+            DeclarationAST *templateParameter = it->value;
+
+            if (templateParameterName(templateParameter) == name)
+                return true;
+        }
+    }
+
+    return _types.contains(name);
+}
+
+bool CheckUndefinedSymbols::isType(const Identifier *id) const
+{
+    if (! id)
+        return false;
+
+    return isType(QByteArray::fromRawData(id->chars(), id->size()));
+}
+
+void CheckUndefinedSymbols::addType(const Name *name)
+{
+    if (! name)
+        return;
+
+    if (const Identifier *id = name->identifier())
+        _types.insert(QByteArray(id->chars(), id->size()));
+}
+
+void CheckUndefinedSymbols::addProtocol(const Name *name)
+{
+    if (!name)
+        return;
+
+    if (const Identifier *id = name->identifier())
+        _protocols.insert(QByteArray(id->chars(), id->size()));
+}
+
+bool CheckUndefinedSymbols::isProtocol(const QByteArray &name) const
+{
+    return _protocols.contains(name);
+}
+
+void CheckUndefinedSymbols::buildTypeMap(Class *klass)
+{
+    addType(klass->name());
+
+    for (unsigned i = 0; i < klass->memberCount(); ++i) {
+        buildMemberTypeMap(klass->memberAt(i));
+    }
+}
+
+void CheckUndefinedSymbols::buildMemberTypeMap(Symbol *member)
+{
+    if (member == 0)
+        return;
+
+    if (Class *klass = member->asClass()) {
+        buildTypeMap(klass);
+    } else if (Enum *e = member->asEnum()) {
+        addType(e->name());
+    } else if (ForwardClassDeclaration *fwd = member->asForwardClassDeclaration()) {
+        addType(fwd->name());
+    } else if (Declaration *decl = member->asDeclaration()) {
+        if (decl->isTypedef())
+            addType(decl->name());
+    }
+}
+
+void CheckUndefinedSymbols::buildTypeMap(NamespaceBinding *binding, QSet<NamespaceBinding *> *processed)
+{
+    if (! processed->contains(binding)) {
+        processed->insert(binding);
+
+        if (const Identifier *id = binding->identifier()) {
+            _namespaceNames.insert(QByteArray(id->chars(), id->size()));
+        }
+
+        foreach (Namespace *ns, binding->symbols) {
+            for (unsigned i = 0; i < ns->memberCount(); ++i) {
+                Symbol *member = ns->memberAt(i);
+
+                if (Class *klass = member->asClass()) {
+                    buildTypeMap(klass);
+                } else if (Enum *e = member->asEnum()) {
+                    addType(e->name());
+                } else if (ForwardClassDeclaration *fwd = member->asForwardClassDeclaration()) {
+                    addType(fwd->name());
+                } else if (Declaration *decl = member->asDeclaration()) {
+                    if (decl->isTypedef())
+                        addType(decl->name());
+                } else if (ObjCForwardClassDeclaration *fKlass = member->asObjCForwardClassDeclaration()) {
+                    addType(fKlass->name());
+                } else if (ObjCClass *klass = member->asObjCClass()) {
+                    addType(klass->name());
+
+                    for (unsigned i = 0; i < klass->memberCount(); ++i)
+                        buildMemberTypeMap(klass->memberAt(i));
+                } else if (ObjCForwardProtocolDeclaration *fProto = member->asObjCForwardProtocolDeclaration()) {
+                    addProtocol(fProto->name());
+                } else if (ObjCProtocol *proto = member->asObjCProtocol()) {
+                    addProtocol(proto->name());
+
+                    for (unsigned i = 0; i < proto->memberCount(); ++i)
+                        buildMemberTypeMap(proto->memberAt(i));
+                }
+            }
+        }
+
+        foreach (NamespaceBinding *childBinding, binding->children) {
+            buildTypeMap(childBinding, processed);
+        }
+    }
+}
+
+FunctionDeclaratorAST *CheckUndefinedSymbols::currentFunctionDeclarator() const
+{
+    if (_functionDeclaratorStack.isEmpty())
+        return 0;
+
+    return _functionDeclaratorStack.last();
+}
+
+CompoundStatementAST *CheckUndefinedSymbols::compoundStatement() const
+{
+    if (_compoundStatementStack.isEmpty())
+        return 0;
+
+    return _compoundStatementStack.last();
+}
+
+bool CheckUndefinedSymbols::visit(FunctionDeclaratorAST *ast)
+{
+    _functionDeclaratorStack.append(ast);
+    return true;
+}
+
+void CheckUndefinedSymbols::endVisit(FunctionDeclaratorAST *)
+{
+    _functionDeclaratorStack.removeLast();
+}
+
+bool CheckUndefinedSymbols::visit(TypeofSpecifierAST *)
+{
+    return false;
+}
+
+bool CheckUndefinedSymbols::visit(NamedTypeSpecifierAST *ast)
+{
+    if (ast->name) {
+        if (! ast->name->name) {
+            unsigned line, col;
+            getTokenStartPosition(ast->firstToken(), &line, &col);
+            // qWarning() << _doc->fileName() << line << col;
+        } else if (const Identifier *id = ast->name->name->identifier()) {
+            if (! isType(id)) {
+                if (FunctionDeclaratorAST *functionDeclarator = currentFunctionDeclarator()) {
+                    if (functionDeclarator->as_cpp_initializer)
+                        return true;
+                }
+
+                Overview oo;
+                translationUnit()->warning(ast->firstToken(), "`%s' is not a type name",
+                                           qPrintable(oo(ast->name->name)));
+            }
+        }
+    }
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(TemplateDeclarationAST *ast)
+{
+    _templateDeclarationStack.append(ast);
+    return true;
+}
+
+void CheckUndefinedSymbols::endVisit(TemplateDeclarationAST *)
+{
+    _templateDeclarationStack.removeLast();
+}
+
+bool CheckUndefinedSymbols::visit(ClassSpecifierAST *ast)
+{
+    bool hasQ_OBJECT_CHECK = false;
+
+    if (ast->symbol) {
+        Class *klass = ast->symbol->asClass();
+
+        for (unsigned i = 0; i < klass->memberCount(); ++i) {
+            Symbol *symbol = klass->memberAt(i);
+
+            if (symbol->name() && symbol->name()->isNameId()) {
+                const NameId *nameId = symbol->name()->asNameId();
+
+                if (! qstrcmp(nameId->identifier()->chars(), "qt_check_for_QOBJECT_macro")) {
+                    hasQ_OBJECT_CHECK = true;
+                    break;
+                }
+            }
+        }
+    }
+
+    _qobjectStack.append(hasQ_OBJECT_CHECK);
+
+    return true;
+}
+
+void CheckUndefinedSymbols::endVisit(ClassSpecifierAST *)
+{ _qobjectStack.removeLast(); }
+
+bool CheckUndefinedSymbols::qobjectCheck() const
+{
+    if (_qobjectStack.isEmpty())
+        return false;
+
+    return _qobjectStack.last();
+}
+
+bool CheckUndefinedSymbols::visit(FunctionDefinitionAST *ast)
+{
+    if (ast->symbol) {
+        Function *fun = ast->symbol->asFunction();
+        if ((fun->isSignal() || fun->isSlot()) && ! qobjectCheck()) {
+            translationUnit()->warning(ast->firstToken(),
+                                       "you forgot the Q_OBJECT macro");
+        }
+    }
+    return true;
+}
+
+void CheckUndefinedSymbols::endVisit(FunctionDefinitionAST *)
+{ }
+
+bool CheckUndefinedSymbols::visit(CompoundStatementAST *ast)
+{
+    _compoundStatementStack.append(ast);
+    return true;
+}
+
+void CheckUndefinedSymbols::endVisit(CompoundStatementAST *)
+{
+    _compoundStatementStack.removeLast();
+}
+
+bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *ast)
+{
+    const bool check = qobjectCheck();
+    for (List<Declaration *> *it = ast->symbols; it; it = it->next) {
+        Declaration *decl = it->value;
+
+        if (Function *fun = decl->type()->asFunctionType()) {
+            if ((fun->isSignal() || fun->isSlot()) && ! check) {
+                translationUnit()->warning(ast->firstToken(),
+                                           "you forgot the Q_OBJECT macro");
+            }
+        }
+    }
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(BaseSpecifierAST *base)
+{
+    if (NameAST *nameAST = base->name) {
+        bool resolvedBaseClassName = false;
+
+        if (const Name *name = nameAST->name) {
+            const Identifier *id = name->identifier();
+            const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
+            if (isType(spell))
+                resolvedBaseClassName = true;
+        }
+
+        if (! resolvedBaseClassName)
+            translationUnit()->warning(nameAST->firstToken(), "expected class-name");
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(UsingDirectiveAST *ast)
+{
+    if (ast->symbol && ast->symbol->name() && _globalNamespaceBinding) {
+        const Location loc = Location(ast->symbol);
+
+        NamespaceBinding *binding = _globalNamespaceBinding.data();
+
+        if (Scope *enclosingNamespaceScope = ast->symbol->enclosingNamespaceScope())
+            binding = NamespaceBinding::find(enclosingNamespaceScope->owner()->asNamespace(), binding);
+
+        if (! binding || ! binding->resolveNamespace(loc, ast->symbol->name())) {
+            translationUnit()->warning(ast->name->firstToken(),
+                                       "expected a namespace");
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(QualifiedNameAST *ast)
+{
+    if (ast->name) {
+        const QualifiedNameId *q = ast->name->asQualifiedNameId();
+        for (unsigned i = 0; i < q->nameCount() - 1; ++i) {
+            const Name *name = q->nameAt(i);
+            if (const Identifier *id = name->identifier()) {
+                const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
+                if (! (_namespaceNames.contains(spell) || isType(id))) {
+                    translationUnit()->warning(ast->firstToken(),
+                                               "`%s' is not a namespace or class name",
+                                               spell.constData());
+                }
+            }
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(CastExpressionAST *ast)
+{
+    if (ast->lparen_token && ast->type_id && ast->rparen_token && ast->expression) {
+        if (TypeIdAST *cast_type_id = ast->type_id->asTypeId()) {
+            SpecifierListAST *type_specifier = cast_type_id->type_specifier_list;
+            if (! cast_type_id->declarator && type_specifier && ! type_specifier->next &&
+                type_specifier->value->asNamedTypeSpecifier() && ast->expression &&
+                ast->expression->asUnaryExpression()) {
+                // this ast node is ambigious, e.g.
+                //   (a) + b
+                // it can be parsed as
+                //   ((a) + b)
+                // or
+                //   (a) (+b)
+                accept(ast->expression);
+                return false;
+            }
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(SizeofExpressionAST *ast)
+{
+    if (ast->lparen_token && ast->expression && ast->rparen_token) {
+        if (TypeIdAST *type_id = ast->expression->asTypeId()) {
+            SpecifierListAST *type_specifier = type_id->type_specifier_list;
+            if (! type_id->declarator && type_specifier && ! type_specifier->next &&
+                type_specifier->value->asNamedTypeSpecifier()) {
+                // this sizeof expression is ambiguos, e.g.
+                // sizeof (a)
+                //   `a' can be a typeid or a nested-expression.
+                return false;
+            } else if (type_id->declarator
+                       &&   type_id->declarator->postfix_declarator_list
+                       && ! type_id->declarator->postfix_declarator_list->next
+                       &&   type_id->declarator->postfix_declarator_list->value->asArrayDeclarator() != 0) {
+                // this sizeof expression is ambiguos, e.g.
+                // sizeof(a[10])
+                //   `a' can be a typeid or an expression.
+                return false;
+            }
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(ObjCClassDeclarationAST *ast)
+{
+    if (NameAST *nameAST = ast->superclass) {
+        bool resolvedSuperClassName = false;
+
+        if (const Name *name = nameAST->name) {
+            const Identifier *id = name->identifier();
+            const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
+            if (isType(spell))
+                resolvedSuperClassName = true;
+        }
+
+        if (! resolvedSuperClassName) {
+            translationUnit()->warning(nameAST->firstToken(),
+                                       "expected class-name after ':' token");
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(ObjCProtocolRefsAST *ast)
+{
+    for (ObjCIdentifierListAST *iter = ast->identifier_list; iter; iter = iter->next) {
+        if (NameAST *nameAST = iter->value) {
+            bool resolvedProtocolName = false;
+
+            if (const Name *name = nameAST->name) {
+                const Identifier *id = name->identifier();
+                const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
+                if (isProtocol(spell))
+                    resolvedProtocolName = true;
+            }
+
+            if (!resolvedProtocolName) {
+                char after;
+
+                if (iter == ast->identifier_list)
+                    after = '<';
+                else
+                    after = ',';
+
+                translationUnit()->warning(nameAST->firstToken(), "expected protocol name after '%c' token", after);
+            }
+        }
+    }
+
+    return false;
+}
+
+bool CheckUndefinedSymbols::visit(ObjCPropertyDeclarationAST *ast)
+{
+    for (List<ObjCPropertyDeclaration *> *iter = ast->symbols; iter; iter = iter->next) {
+        if (/*Name *getterName = */ iter->value->getterName()) {
+            // FIXME: resolve the symbol for the name, and check its signature.
+        }
+
+        if (/*Name *setterName = */ iter->value->setterName()) {
+            // FIXME: resolve the symbol for the name, and check its signature.
+        }
+    }
+
+    return false;
+}