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Groovy example source code file (ThreadInterruptibleASTTransformation.groovy)

This example Groovy source code file (ThreadInterruptibleASTTransformation.groovy) is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

abstractinterruptibleasttransformation, classnode, classnode, execution, expression, groovyasttransformation, methodcallexpression, my_type, my_type, override, override, string, the, the

The Groovy ThreadInterruptibleASTTransformation.groovy source code

 * Copyright 2008-2010 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.codehaus.groovy.transform;

import groovy.transform.ThreadInterrupt
import org.codehaus.groovy.ast.ClassHelper
import org.codehaus.groovy.ast.ClassNode
import org.codehaus.groovy.ast.MethodNode
import org.codehaus.groovy.ast.stmt.DoWhileStatement
import org.codehaus.groovy.ast.stmt.ForStatement
import org.codehaus.groovy.ast.stmt.WhileStatement
import org.codehaus.groovy.control.CompilePhase
import org.codehaus.groovy.ast.expr.*

 * Allows "interrupt-safe" executions of scripts by adding Thread.currentThread().isInterrupted()
 * checks on loops (for, while, do) and first statement of closures. By default, also adds an interrupt check
 * statement on the beginning of method calls.
 * @see groovy.transform.ThreadInterrupt
 * @author Cedric Champeau
 * @author Hamlet D'Arcy
 * @since 1.8.0
@GroovyASTTransformation(phase = CompilePhase.CANONICALIZATION)
public class ThreadInterruptibleASTTransformation extends AbstractInterruptibleASTTransformation {

    private static final ClassNode MY_TYPE = ClassHelper.make(ThreadInterrupt)

    protected ClassNode type() {
        return MY_TYPE;

    protected String getErrorMessage() {
        'Execution interrupted. The current thread has been interrupted.'

    protected Expression createCondition() {
        new MethodCallExpression(
                new StaticMethodCallExpression(ClassHelper.make(Thread),
                'isInterrupted', ArgumentListExpression.EMPTY_ARGUMENTS)

    public void visitClosureExpression(ClosureExpression closureExpr) {
        def code = closureExpr.code
        closureExpr.code = wrapBlock(code)
        super.visitClosureExpression closureExpr

    public void visitMethod(MethodNode node) {
        if (checkOnMethodStart && !node.isSynthetic() && !node.isAbstract()) {
            def code = node.code
            node.code = wrapBlock(code);

Other Groovy examples (source code examples)

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