Examples with IMPLEMENTS org.apache.groovy.parser.antlr4.GroovyLexer.IMPLEMENTS used on opensource projects

Example 1 with IMPLEMENTS

use of org.apache.groovy.parser.antlr4.GroovyLexer.IMPLEMENTS in project groovy by apache.

the class AstBuilder method visitClassDeclaration.

@Override
public ClassNode visitClassDeclaration(final ClassDeclarationContext ctx) {
    String packageName = Optional.ofNullable(moduleNode.getPackageName()).orElse("");
    String className = this.visitIdentifier(ctx.identifier());
    if (VAR_STR.equals(className)) {
        throw createParsingFailedException("var cannot be used for type declarations", ctx.identifier());
    }
    boolean isAnnotation = asBoolean(ctx.AT());
    if (isAnnotation) {
        if (asBoolean(ctx.typeParameters())) {
            throw createParsingFailedException("annotation declaration cannot have type parameters", ctx.typeParameters());
        }
        if (asBoolean(ctx.EXTENDS())) {
            throw createParsingFailedException("No extends clause allowed for annotation declaration", ctx.EXTENDS());
        }
        if (asBoolean(ctx.IMPLEMENTS())) {
            throw createParsingFailedException("No implements clause allowed for annotation declaration", ctx.IMPLEMENTS());
        }
    }
    boolean isEnum = asBoolean(ctx.ENUM());
    if (isEnum) {
        if (asBoolean(ctx.typeParameters())) {
            throw createParsingFailedException("enum declaration cannot have type parameters", ctx.typeParameters());
        }
        if (asBoolean(ctx.EXTENDS())) {
            throw createParsingFailedException("No extends clause allowed for enum declaration", ctx.EXTENDS());
        }
    }
    boolean isInterface = (asBoolean(ctx.INTERFACE()) && !isAnnotation);
    if (isInterface) {
        if (asBoolean(ctx.IMPLEMENTS())) {
            throw createParsingFailedException("No implements clause allowed for interface declaration", ctx.IMPLEMENTS());
        }
    }
    List<ModifierNode> modifierNodeList = ctx.getNodeMetaData(TYPE_DECLARATION_MODIFIERS);
    Objects.requireNonNull(modifierNodeList, "modifierNodeList should not be null");
    ModifierManager modifierManager = new ModifierManager(this, modifierNodeList);
    Optional<ModifierNode> finalModifierNodeOptional = modifierManager.get(FINAL);
    Optional<ModifierNode> sealedModifierNodeOptional = modifierManager.get(SEALED);
    Optional<ModifierNode> nonSealedModifierNodeOptional = modifierManager.get(NON_SEALED);
    boolean isFinal = finalModifierNodeOptional.isPresent();
    boolean isSealed = sealedModifierNodeOptional.isPresent();
    boolean isNonSealed = nonSealedModifierNodeOptional.isPresent();
    boolean isRecord = asBoolean(ctx.RECORD());
    boolean hasRecordHeader = asBoolean(ctx.formalParameters());
    if (isRecord) {
        if (asBoolean(ctx.EXTENDS())) {
            throw createParsingFailedException("No extends clause allowed for record declaration", ctx.EXTENDS());
        }
        if (!hasRecordHeader) {
            throw createParsingFailedException("header declaration of record is expected", ctx.identifier());
        }
        if (isSealed) {
            throw createParsingFailedException("`sealed` is not allowed for record declaration", sealedModifierNodeOptional.get());
        }
        if (isNonSealed) {
            throw createParsingFailedException("`non-sealed` is not allowed for record declaration", nonSealedModifierNodeOptional.get());
        }
    } else {
        if (hasRecordHeader) {
            throw createParsingFailedException("header declaration is only allowed for record declaration", ctx.formalParameters());
        }
    }
    if (isSealed && isNonSealed) {
        throw createParsingFailedException("type cannot be defined with both `sealed` and `non-sealed`", nonSealedModifierNodeOptional.get());
    }
    if (isFinal && (isSealed || isNonSealed)) {
        throw createParsingFailedException("type cannot be defined with both " + (isSealed ? "`sealed`" : "`non-sealed`") + " and `final`", finalModifierNodeOptional.get());
    }
    if ((isAnnotation || isEnum) && (isSealed || isNonSealed)) {
        ModifierNode mn = isSealed ? sealedModifierNodeOptional.get() : nonSealedModifierNodeOptional.get();
        throw createParsingFailedException("modifier `" + mn.getText() + "` is not allowed for " + (isEnum ? "enum" : "annotation definition"), mn);
    }
    boolean hasPermits = asBoolean(ctx.PERMITS());
    if (!isSealed && hasPermits) {
        throw createParsingFailedException("only sealed type declarations should have `permits` clause", ctx);
    }
    int modifiers = modifierManager.getClassModifiersOpValue();
    boolean syntheticPublic = ((modifiers & Opcodes.ACC_SYNTHETIC) != 0);
    modifiers &= ~Opcodes.ACC_SYNTHETIC;
    ClassNode classNode, outerClass = classNodeStack.peek();
    if (isEnum) {
        classNode = EnumHelper.makeEnumNode(asBoolean(outerClass) ? className : packageName + className, modifiers, null, outerClass);
    } else if (asBoolean(outerClass)) {
        if (outerClass.isInterface())
            modifiers |= Opcodes.ACC_STATIC;
        classNode = new InnerClassNode(outerClass, outerClass.getName() + "$" + className, modifiers, ClassHelper.OBJECT_TYPE.getPlainNodeReference());
    } else {
        classNode = new ClassNode(packageName + className, modifiers, ClassHelper.OBJECT_TYPE.getPlainNodeReference());
    }
    configureAST(classNode, ctx);
    classNode.setSyntheticPublic(syntheticPublic);
    classNode.setGenericsTypes(this.visitTypeParameters(ctx.typeParameters()));
    boolean isInterfaceWithDefaultMethods = (isInterface && this.containsDefaultMethods(ctx));
    if (isSealed) {
        AnnotationNode sealedAnnotationNode = new AnnotationNode(ClassHelper.makeCached(Sealed.class));
        if (asBoolean(ctx.ps)) {
            ListExpression permittedSubclassesListExpression = listX(Arrays.stream(this.visitTypeList(ctx.ps)).map(ClassExpression::new).collect(Collectors.toList()));
            sealedAnnotationNode.setMember("permittedSubclasses", permittedSubclassesListExpression);
            configureAST(sealedAnnotationNode, ctx.PERMITS());
            sealedAnnotationNode.setNodeMetaData("permits", true);
        }
        classNode.addAnnotation(sealedAnnotationNode);
    } else if (isNonSealed) {
        classNode.addAnnotation(new AnnotationNode(ClassHelper.makeCached(NonSealed.class)));
    }
    if (isInterfaceWithDefaultMethods || asBoolean(ctx.TRAIT())) {
        classNode.addAnnotation(new AnnotationNode(ClassHelper.makeCached(Trait.class)));
    }
    if (isRecord) {
        classNode.addAnnotation(new AnnotationNode(RECORD_TYPE_CLASS));
    }
    classNode.addAnnotations(modifierManager.getAnnotations());
    if (isInterfaceWithDefaultMethods) {
        classNode.putNodeMetaData(IS_INTERFACE_WITH_DEFAULT_METHODS, Boolean.TRUE);
    }
    classNode.putNodeMetaData(CLASS_NAME, className);
    if (asBoolean(ctx.CLASS()) || asBoolean(ctx.TRAIT())) {
        if (asBoolean(ctx.scs)) {
            ClassNode[] scs = this.visitTypeList(ctx.scs);
            if (scs.length > 1) {
                throw createParsingFailedException("Cannot extend multiple classes", ctx.EXTENDS());
            }
            classNode.setSuperClass(scs[0]);
        }
        classNode.setInterfaces(this.visitTypeList(ctx.is));
        this.initUsingGenerics(classNode);
    } else if (isInterfaceWithDefaultMethods) {
        // GROOVY-9259
        classNode.setInterfaces(this.visitTypeList(ctx.scs));
        this.initUsingGenerics(classNode);
    } else if (isInterface) {
        classNode.setModifiers(classNode.getModifiers() | Opcodes.ACC_INTERFACE | Opcodes.ACC_ABSTRACT);
        classNode.setInterfaces(this.visitTypeList(ctx.scs));
        this.initUsingGenerics(classNode);
        this.hackMixins(classNode);
    } else if (isEnum || isRecord) {
        classNode.setInterfaces(this.visitTypeList(ctx.is));
        this.initUsingGenerics(classNode);
        if (isRecord) {
            transformRecordHeaderToProperties(ctx, classNode);
        }
    } else if (isAnnotation) {
        classNode.setModifiers(classNode.getModifiers() | Opcodes.ACC_INTERFACE | Opcodes.ACC_ABSTRACT | Opcodes.ACC_ANNOTATION);
        classNode.addInterface(ClassHelper.Annotation_TYPE);
        this.hackMixins(classNode);
    } else {
        throw createParsingFailedException("Unsupported class declaration: " + ctx.getText(), ctx);
    }
    // have here to ensure it won't be the inner class
    if (asBoolean(ctx.CLASS()) || asBoolean(ctx.TRAIT())) {
        classNodeList.add(classNode);
    }
    classNodeStack.push(classNode);
    ctx.classBody().putNodeMetaData(CLASS_DECLARATION_CLASS_NODE, classNode);
    this.visitClassBody(ctx.classBody());
    if (isRecord) {
        Optional<FieldNode> fieldNodeOptional = classNode.getFields().stream().filter(f -> !isTrue(f, IS_RECORD_GENERATED) && !f.isStatic()).findFirst();
        if (fieldNodeOptional.isPresent()) {
            createParsingFailedException("Instance field is not allowed in `record`", fieldNodeOptional.get());
        }
    }
    classNodeStack.pop();
    if (!(asBoolean(ctx.CLASS()) || asBoolean(ctx.TRAIT()))) {
        classNodeList.add(classNode);
    }
    groovydocManager.handle(classNode, ctx);
    return classNode;
}