C++ TypePtr::getAccessLevel方法代码示例

void DeclarationAnalyzer::visitClass(const ClassDefPtr& node)
{
    TypePtr type = defineType(node);
    SCOPED_SET(ctx->currentType, type);
    assert(type->getAccessLevel() != AccessLevelUndefined);
    if(type->getParentType() != nullptr)
        verifyAccessLevel(node, type->getParentType(), D_CLASS, C_SUPERCLASS);
    visitDeclaration(node);
    verifyProtocolConform(type);
    prepareDefaultInitializers(type);
    validateDeclarationModifiers(node);
    visitImplementation(node);
}

void DeclarationAnalyzer::visitClass(const ClassDefPtr& node)
{
    if(isLazyDeclared(node))
        return;
    TypePtr type = getOrDefineType(node);
    ScopeGuard scope(symbolRegistry, type->getScope());
    SCOPED_SET(ctx->currentType, type);
    SCOPED_SET(ctx->currentExtension, nullptr);
    SCOPED_SET(ctx->currentFunction, nullptr);

    assert(type->getAccessLevel() != AccessLevelUndefined);
    if(type->getParentType() != nullptr)
        verifyAccessLevel(node, type->getParentType(), DeclarationTypeClass, ComponentTypeSuperclass);
    visitDeclaration(node);
    
    prepareDefaultInitializers(type);
    validateDeclarationModifiers(node);
    //visitImplementation(node);
}

//.........这里部分代码省略.........

    assert(type != nullptr);
    assert(type->getCategory() == category);
    //prepare for generic
    if(!type->getGenericDefinition() && node->getGenericParametersDef())
    {
        GenericParametersDefPtr genericParams = node->getGenericParametersDef();
        GenericDefinitionPtr generic = prepareGenericTypes(genericParams);
        generic->registerTo(type->getScope());
        type->setGenericDefinition(generic);
    }
    
    if(node->hasModifier(DeclarationModifiers::Final))
        type->setFlags(SymbolFlagFinal, true);
    static_pointer_cast<TypeBuilder>(type)->setModuleName(ctx->currentModule->getName());
    ctx->allTypes.push_back(type);
    
    //check inheritance clause
    {
        TypePtr parent = nullptr;
        bool first = true;

        ScopeGuard scope(symbolRegistry, type->getScope());
        SCOPED_SET(ctx->currentType, type);
        for(const TypeIdentifierPtr& parentType : node->getParents())
        {
            parentType->accept(this);
            if(first)
                declareImmediately(parentType->getName());
            TypePtr ptr = resolveType(parentType, true);
            Type::Category pcategory = ptr->getCategory();
            if(pcategory == Type::Specialized)
                pcategory = ptr->getInnerType()->getCategory();
            if(pcategory == Type::Class && category == Type::Class)
            {
                if(!first)
                {
                    //only the first type can be class type
                    error(parentType, Errors::E_SUPERCLASS_MUST_APPEAR_FIRST_IN_INHERITANCE_CLAUSE_1, toString(parentType));
                    return nullptr;
                }
                parent = ptr;
                if(parent->hasFlags(SymbolFlagFinal))
                {
                    error(parentType, Errors::E_INHERITANCE_FROM_A_FINAL_CLASS_A_1, parentType->getName());
                    return nullptr;
                }
            }
            else if(category == Type::Enum && pcategory != Type::Protocol)
            {

                if(parent)//already has a raw type
                {
                    error(parentType, Errors::E_MULTIPLE_ENUM_RAW_TYPES_A_AND_B_2, parent->toString(), ptr->toString());
                    return nullptr;
                }
                if(!first)
                {
                    error(parentType, Errors::E_RAW_TYPE_A_MUST_APPEAR_FIRST_IN_THE_ENUM_INHERITANCE_CLAUSE_1, ptr->toString());
                    return nullptr;
                }
                //check if the raw type is literal convertible
                if(!isLiteralTypeForEnum(symbolRegistry->getGlobalScope(), ptr))
                {
                    error(parentType, Errors::E_RAW_TYPE_A_IS_NOT_CONVERTIBLE_FROM_ANY_LITERAL_1, ptr->toString());
                    return nullptr;
                }
                if(!ptr->canAssignTo(symbolRegistry->getGlobalScope()->Equatable()))
                {
                    error(parentType, Errors::E_RAWREPRESENTABLE_INIT_CANNOT_BE_SYNTHESIZED_BECAUSE_RAW_TYPE_A_IS_NOT_EQUATABLE_1, ptr->toString());
                    return nullptr;
                }
                parent = ptr;
            }
            else if(pcategory == Type::Protocol)
            {
                type->addProtocol(ptr);
            }
            else
            {
                if(category == Type::Class)
                    error(parentType, Errors::E_INHERITANCE_FROM_NONE_PROTOCOL_NON_CLASS_TYPE_1, toString(parentType));
                else
                    error(parentType, Errors::E_INHERITANCE_FROM_NONE_PROTOCOL_TYPE_1, toString(parentType));
                return nullptr;
            }
            first = false;
        }

        type->setParentType(parent);
        if(parent && parent->getAccessLevel() == AccessLevelPublic && (node->getModifiers() & DeclarationModifiers::AccessModifiers) == 0)
            type->setAccessLevel(AccessLevelPublic);//when access level is undefined, try to inherit base's access level
        else
            type->setAccessLevel(parseAccessLevel(node->getModifiers()));
    }
    

    declarationFinished(type->getName(), type, node);
    return type;
}

//.........这里部分代码省略.........
    //check if it's defined as a nested type
    if(ctx->currentType)
    {
        if(genericParams)
        {
            error(node, Errors::E_GENERIC_TYPE_A_NESTED_IN_TYPE_B_IS_NOT_ALLOWED_2, id->getName(), ctx->currentType->getName());
            return nullptr;
        }
        if(ctx->currentType->isGenericType())
        {
            error(node, Errors::E_TYPE_A_NESTED_IN_GENERIC_TYPE_B_IS_NOT_ALLOWED_2, id->getName(), ctx->currentType->getName());
            return nullptr;
        }
    }

    if(genericParams)
    {
        generic = prepareGenericTypes(genericParams);
        generic->registerTo(typeScope);
    }

    //check inheritance clause
    TypePtr parent = nullptr;
    std::vector<TypePtr> protocols;
    bool first = true;

    for(const TypeIdentifierPtr& parentType : node->getParents())
    {
        parentType->accept(semanticAnalyzer);
        TypePtr ptr = this->lookupType(parentType);
        if(ptr->getCategory() == Type::Class && category == Type::Class)
        {
            if(!first)
            {
                //only the first type can be class type
                error(parentType, Errors::E_SUPERCLASS_MUST_APPEAR_FIRST_IN_INHERITANCE_CLAUSE_1, toString(parentType));
                return nullptr;
            }
            parent = ptr;
            if(parent->hasFlags(SymbolFlagFinal))
            {
                error(parentType, Errors::E_INHERITANCE_FROM_A_FINAL_CLASS_A_1, parentType->getName());
                return nullptr;
            }
        }
        else if(category == Type::Enum && ptr->getCategory() != Type::Protocol)
        {

            if(parent)//already has a raw type
            {
                error(parentType, Errors::E_MULTIPLE_ENUM_RAW_TYPES_A_AND_B_2, parent->toString(), ptr->toString());
                return nullptr;
            }
            if(!first)
            {
                error(parentType, Errors::E_RAW_TYPE_A_MUST_APPEAR_FIRST_IN_THE_ENUM_INHERITANCE_CLAUSE_1, ptr->toString());
                return nullptr;
            }
            //check if the raw type is literal convertible
            if(!isLiteralTypeForEnum(symbolRegistry->getGlobalScope(), ptr))
            {
                error(parentType, Errors::E_RAW_TYPE_A_IS_NOT_CONVERTIBLE_FROM_ANY_LITERAL_1, ptr->toString());
                return nullptr;
            }
            if(!ptr->canAssignTo(symbolRegistry->getGlobalScope()->Equatable()))
            {
                error(parentType, Errors::E_RAWREPRESENTABLE_INIT_CANNOT_BE_SYNTHESIZED_BECAUSE_RAW_TYPE_A_IS_NOT_EQUATABLE_1, ptr->toString());
                return nullptr;
            }
            parent = ptr;
        }
        else if(ptr->getCategory() == Type::Protocol)
        {
            protocols.push_back(ptr);
        }
        else
        {
            if(category == Type::Class)
                error(parentType, Errors::E_INHERITANCE_FROM_NONE_PROTOCOL_NON_CLASS_TYPE_1, toString(parentType));
            else
                error(parentType, Errors::E_INHERITANCE_FROM_NONE_PROTOCOL_TYPE_1, toString(parentType));
            return nullptr;
        }
        first = false;
    }

    //register this type
    type = Type::newType(node->getIdentifier()->getName(), category, node, parent, protocols, generic);
    node->setType(type);
    if(parent && parent->getAccessLevel() == AccessLevelPublic && (node->getModifiers() & DeclarationModifiers::AccessModifiers) == 0)
        type->setAccessLevel(AccessLevelPublic);//when access level is undefined, try to inherit base's access level
    else
        type->setAccessLevel(parseAccessLevel(node->getModifiers()));
    currentScope->addSymbol(type);
    if(node->hasModifier(DeclarationModifiers::Final))
        type->setFlags(SymbolFlagFinal, true);

    declarationFinished(type->getName(), type, node);
    return type;
}