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

Example 1 with THROW

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

the class AstBuilder method visitSwitchBlockStatementExpressionGroup.

@Override
@SuppressWarnings("unchecked")
public Tuple3<List<Statement>, Boolean, Boolean> visitSwitchBlockStatementExpressionGroup(SwitchBlockStatementExpressionGroupContext ctx) {
    int labelCnt = ctx.switchExpressionLabel().size();
    List<Token> firstLabelHolder = new ArrayList<>(1);
    final int[] arrowCntHolder = new int[1];
    boolean[] isArrowHolder = new boolean[1];
    boolean[] hasResultStmtHolder = new boolean[1];
    List<Statement> result = (List<Statement>) ctx.switchExpressionLabel().stream().map(e -> (Object) this.visitSwitchExpressionLabel(e)).reduce(new ArrayList<Statement>(4), (r, e) -> {
        List<Statement> statementList = (List<Statement>) r;
        Tuple3<Token, List<Expression>, Integer> tuple = (Tuple3<Token, List<Expression>, Integer>) e;
        boolean isArrow = ARROW == tuple.getV3();
        isArrowHolder[0] = isArrow;
        if (isArrow) {
            if (++arrowCntHolder[0] > 1 && !firstLabelHolder.isEmpty()) {
                throw createParsingFailedException("`case ... ->` does not support falling through cases", firstLabelHolder.get(0));
            }
        }
        boolean isLast = labelCnt - 1 == statementList.size();
        BlockStatement codeBlock = this.visitBlockStatements(ctx.blockStatements());
        List<Statement> statements = codeBlock.getStatements();
        int statementsCnt = statements.size();
        if (0 == statementsCnt) {
            throw createParsingFailedException("`yield` is expected", ctx.blockStatements());
        }
        if (isArrow && statementsCnt > 1) {
            throw createParsingFailedException("Expect only 1 statement, but " + statementsCnt + " statements found", ctx.blockStatements());
        }
        if (!isArrow) {
            boolean[] hasYieldHolder = new boolean[1];
            boolean[] hasThrowHolder = new boolean[1];
            codeBlock.visit(new CodeVisitorSupport() {

                @Override
                public void visitReturnStatement(ReturnStatement statement) {
                    if (isTrue(statement, IS_YIELD_STATEMENT)) {
                        hasYieldHolder[0] = true;
                        return;
                    }
                    super.visitReturnStatement(statement);
                }

                @Override
                public void visitThrowStatement(ThrowStatement statement) {
                    hasThrowHolder[0] = true;
                }
            });
            if (hasYieldHolder[0] || hasThrowHolder[0]) {
                hasResultStmtHolder[0] = true;
            }
        }
        Statement exprOrBlockStatement = statements.get(0);
        if (exprOrBlockStatement instanceof BlockStatement) {
            BlockStatement blockStatement = (BlockStatement) exprOrBlockStatement;
            List<Statement> branchStatementList = blockStatement.getStatements();
            if (1 == branchStatementList.size()) {
                exprOrBlockStatement = branchStatementList.get(0);
            }
        }
        if (!(exprOrBlockStatement instanceof ReturnStatement || exprOrBlockStatement instanceof ThrowStatement)) {
            if (isArrow) {
                MethodCallExpression callClosure = callX(configureAST(closureX(null, exprOrBlockStatement), exprOrBlockStatement), "call");
                callClosure.setImplicitThis(false);
                Expression resultExpr = exprOrBlockStatement instanceof ExpressionStatement ? ((ExpressionStatement) exprOrBlockStatement).getExpression() : callClosure;
                codeBlock = configureAST(createBlockStatement(configureAST(returnS(resultExpr), exprOrBlockStatement)), exprOrBlockStatement);
            }
        }
        switch(tuple.getV1().getType()) {
            case CASE:
                {
                    if (!asBoolean(statementList)) {
                        firstLabelHolder.add(tuple.getV1());
                    }
                    for (int i = 0, n = tuple.getV2().size(); i < n; i++) {
                        Expression expr = tuple.getV2().get(i);
                        statementList.add(configureAST(new CaseStatement(expr, // check whether processing the last label. if yes, block statement should be attached.
                        (isLast && i == n - 1) ? codeBlock : EmptyStatement.INSTANCE), firstLabelHolder.get(0)));
                    }
                    break;
                }
            case DEFAULT:
                {
                    codeBlock.putNodeMetaData(IS_SWITCH_DEFAULT, true);
                    statementList.add(// this.configureAST(codeBlock, tuple.getKey())
                    codeBlock);
                    break;
                }
        }
        return statementList;
    });
    return tuple(result, isArrowHolder[0], hasResultStmtHolder[0]);
}

Example 2 with THROW

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

the class AstBuilder method visitUnaryAddExprAlt.

@Override
public Expression visitUnaryAddExprAlt(final UnaryAddExprAltContext ctx) {
    ExpressionContext expressionCtx = ctx.expression();
    Expression expression = (Expression) this.visit(expressionCtx);
    switch(ctx.op.getType()) {
        case ADD:
            {
                if (isNonStringConstantOutsideParentheses(expression)) {
                    return configureAST(expression, ctx);
                }
                return configureAST(new UnaryPlusExpression(expression), ctx);
            }
        case SUB:
            {
                if (isNonStringConstantOutsideParentheses(expression)) {
                    ConstantExpression constantExpression = (ConstantExpression) expression;
                    try {
                        String integerLiteralText = constantExpression.getNodeMetaData(INTEGER_LITERAL_TEXT);
                        if (null != integerLiteralText) {
                            ConstantExpression result = new ConstantExpression(Numbers.parseInteger(SUB_STR + integerLiteralText));
                            // reset the numberFormatError
                            this.numberFormatError = null;
                            return configureAST(result, ctx);
                        }
                        String floatingPointLiteralText = constantExpression.getNodeMetaData(FLOATING_POINT_LITERAL_TEXT);
                        if (null != floatingPointLiteralText) {
                            ConstantExpression result = new ConstantExpression(Numbers.parseDecimal(SUB_STR + floatingPointLiteralText));
                            // reset the numberFormatError
                            this.numberFormatError = null;
                            return configureAST(result, ctx);
                        }
                    } catch (Exception e) {
                        throw createParsingFailedException(e.getMessage(), ctx);
                    }
                    throw new GroovyBugError("Failed to find the original number literal text: " + constantExpression.getText());
                }
                return configureAST(new UnaryMinusExpression(expression), ctx);
            }
        case INC:
        case DEC:
            return configureAST(new PrefixExpression(this.createGroovyToken(ctx.op), expression), ctx);
        default:
            throw createParsingFailedException("Unsupported unary operation: " + ctx.getText(), ctx);
    }
}

Example 3 with THROW

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

the class SemanticPredicates method isFollowingArgumentsOrClosure.

/**
 * Check whether following a method name of command expression.
 * Method name should not end with "2: arguments" and "3: closure"
 *
 * @param context the preceding expression
 */
public static boolean isFollowingArgumentsOrClosure(ExpressionContext context) {
    if (context instanceof PostfixExprAltContext) {
        List<ParseTree> peacChildren = ((PostfixExprAltContext) context).children;
        try {
            ParseTree peacChild = peacChildren.get(0);
            List<ParseTree> pecChildren = ((PostfixExpressionContext) peacChild).children;
            ParseTree pecChild = pecChildren.get(0);
            PathExpressionContext pec = (PathExpressionContext) pecChild;
            int t = pec.t;
            return (2 == t || 3 == t);
        } catch (IndexOutOfBoundsException | ClassCastException e) {
            throw new GroovyBugError("Unexpected structure of expression context: " + context, e);
        }
    }
    return false;
}

Example 4 with THROW

use of org.apache.groovy.parser.antlr4.GroovyLexer.THROW 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;
}

Example 5 with THROW

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

the class AstBuilder method visitContinueStatement.

@Override
public ContinueStatement visitContinueStatement(final ContinueStatementContext ctx) {
    if (visitingLoopStatementCount == 0) {
        throw createParsingFailedException("continue statement is only allowed inside loops", ctx);
    }
    GroovyParserRuleContext gprc = switchExpressionRuleContextStack.peek();
    if (gprc instanceof SwitchExpressionContext) {
        throw createParsingFailedException("switch expression does not support `continue`", ctx);
    }
    String label = asBoolean(ctx.identifier()) ? this.visitIdentifier(ctx.identifier()) : null;
    return configureAST(new ContinueStatement(label), ctx);
}