C++ Symbol::asFunction方法代码示例

void
NameResolver::registerFunction(FunctionSymbol *sym)
{
  Scope *scope = sym->scope();
  assert(scope == globals_);

  Symbol *other = scope->localLookup(sym->name());
  if (!other) {
    scope->addSymbol(sym);
    return;
  }

  // If |other| is not a function, it's an error.
  FunctionSymbol *orig = other->asFunction();
  if (!orig) {
    reportRedeclaration(sym, other);
    return;
  }

  // If both have bodies, it's an error.
  FunctionStatement *sym_node = sym->node()->toFunctionStatement();
  FunctionStatement *orig_node = orig->node()->toFunctionStatement();
  if (sym_node->body() && orig_node->body()) {
    reportRedeclaration(sym, other);
    return;
  }

  // Build a shadow list, containing all symbols with this name.
  orig->addShadow(orig_node);
  orig->addShadow(sym_node);
  sym_node->setShadowed(orig);
}

// TODO: remove me, this is taken from cppeditor.cpp. Find some common place for this method
static Document::Ptr findDefinition(const Function *functionDeclaration, int *line)
{
    CppTools::CppModelManagerInterface *cppModelManager = cppModelManagerInstance();
    if (!cppModelManager)
        return Document::Ptr();

    QVector<const Name *> qualifiedName;
    Scope *scope = functionDeclaration->scope();
    for (; scope; scope = scope->enclosingScope()) {
        if (scope->isClassScope() || scope->isNamespaceScope()) {
            if (scope->owner() && scope->owner()->name()) {
                const Name *scopeOwnerName = scope->owner()->name();
                if (const QualifiedNameId *q = scopeOwnerName->asQualifiedNameId()) {
                    for (unsigned i = 0; i < q->nameCount(); ++i) {
                        qualifiedName.prepend(q->nameAt(i));

                    }
                } else {
                    qualifiedName.prepend(scopeOwnerName);
                }
            }
        }
    }

    qualifiedName.append(functionDeclaration->name());

    Control control;
    const QualifiedNameId *q = control.qualifiedNameId(&qualifiedName[0], qualifiedName.size());
    LookupContext context(&control);
    const Snapshot documents = cppModelManager->snapshot();
    foreach (Document::Ptr doc, documents) {
        QList<Scope *> visibleScopes;
        visibleScopes.append(doc->globalSymbols());
        visibleScopes = context.expand(visibleScopes);
        foreach (Scope *visibleScope, visibleScopes) {
            Symbol *symbol = 0;
            if (const NameId *nameId = q->unqualifiedNameId()->asNameId())
                symbol = visibleScope->lookat(nameId->identifier());
            else if (const DestructorNameId *dtorId = q->unqualifiedNameId()->asDestructorNameId())
                symbol = visibleScope->lookat(dtorId->identifier());
            else if (const TemplateNameId *templNameId = q->unqualifiedNameId()->asTemplateNameId())
                symbol = visibleScope->lookat(templNameId->identifier());
            else if (const OperatorNameId *opId = q->unqualifiedNameId()->asOperatorNameId())
                symbol = visibleScope->lookat(opId->kind());
            // ### cast operators
            for (; symbol; symbol = symbol->next()) {
                if (! symbol->isFunction())
                    continue;
                else if (! isCompatible(symbol->asFunction(), functionDeclaration, q))
                    continue;
                *line = symbol->line(); // TODO: shift the line so that we are inside a function. Maybe just find the nearest '{'?
                return doc;
            }
        }

void
SemanticAnalysis::visitNameProxy(NameProxy *proxy)
{
  Symbol *sym = proxy->sym();
  VariableSymbol *var = sym->asVariable();

  // If we see that a symbol is a function literal, then we bypass the scope
  // chain operations entirely and hardcode the function literal.
  if (sym->isFunction()) {
    assert(sym->scope()->kind() == Scope::Global);
    hir_ = new (pool_) HFunction(proxy, sym->asFunction());
    return;
  }

  if (value_context_ == kLValue) {
    // Egads! We're being asked to construct an l-value instead of an r-value.
    *outp_ = LValue(var);
    return;
  }

  Scope *in = sym->scope();
  switch (in->kind()) {
    case Scope::Global:
      hir_ = new (pool_) HGlobal(proxy, var);
      return;

    case Scope::Function:
    {
      assert(var->storage() == VariableSymbol::Arg);
      // Since we're in an r-value context, we need to strip the reference type.
      Type *type = var->type();
      if (type->isReference())
        type = type->toReference()->contained();
      hir_ = new (pool_) HLocal(proxy, type, var);
      return;
    }

    default:
      assert(in->kind() == Scope::Block);
      assert(var->storage() == VariableSymbol::Local);
      hir_ = new (pool_) HLocal(proxy, var->type(), var);
      return;
  }
}

QList<CppQuickFixOperation::Ptr> InsertQtPropertyMembers::match(const CppQuickFixState &state)
{
    const QList<AST *> &path = state.path();

    if (path.isEmpty())
        return noResult();

    AST * const ast = path.last();
    QtPropertyDeclarationAST *qtPropertyDeclaration = ast->asQtPropertyDeclaration();
    if (!qtPropertyDeclaration)
        return noResult();

    ClassSpecifierAST *klass = 0;
    for (int i = path.size() - 2; i >= 0; --i) {
        klass = path.at(i)->asClassSpecifier();
        if (klass)
            break;
    }
    if (!klass)
        return noResult();

    CppRefactoringChanges refactoring(state.snapshot());
    const CppRefactoringFile &file = refactoring.file(state.document()->fileName());
    const QString propertyName = file.textOf(qtPropertyDeclaration->property_name);
    QString getterName;
    QString setterName;
    QString signalName;
    int generateFlags = 0;
    for (QtPropertyDeclarationItemListAST *it = qtPropertyDeclaration->property_declaration_item_list;
         it; it = it->next) {
        const QString tokenString = file.tokenAt(it->value->item_name_token).spell();
        if (tokenString == QLatin1String("READ")) {
            getterName = file.textOf(it->value->expression);
            generateFlags |= GenerateGetter;
        } else if (tokenString == QLatin1String("WRITE")) {
            setterName = file.textOf(it->value->expression);
            generateFlags |= GenerateSetter;
        } else if (tokenString == QLatin1String("NOTIFY")) {
            signalName = file.textOf(it->value->expression);
            generateFlags |= GenerateSignal;
        }
    }
    QString storageName = QString("m_%1").arg(propertyName);
    generateFlags |= GenerateStorage;

    Class *c = klass->symbol;

    Overview overview;
    for (unsigned i = 0; i < c->memberCount(); ++i) {
        Symbol *member = c->memberAt(i);
        FullySpecifiedType type = member->type();
        if (member->asFunction() || (type.isValid() && type->asFunctionType())) {
            const QString name = overview(member->name());
            if (name == getterName) {
                generateFlags &= ~GenerateGetter;
            } else if (name == setterName) {
                generateFlags &= ~GenerateSetter;
            } else if (name == signalName) {
                generateFlags &= ~GenerateSignal;
            }
        } else if (member->asDeclaration()) {
            const QString name = overview(member->name());
            if (name == storageName)
                generateFlags &= ~GenerateStorage;
        }
    }

    if (getterName.isEmpty() && setterName.isEmpty() && signalName.isEmpty())
        return noResult();

    return singleResult(new Operation(state, path.size() - 1, qtPropertyDeclaration, c,
                                      generateFlags,
                                      getterName, setterName, signalName, storageName));
}