gradle/indy.gradle

/*
 * Copyright 2008-2012 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// This file contains support tools for the Gradle build
// with regards to invoke dynamic support (indy)

rootProject.ext.indyCapable = {
    boolean capable = true
    try {
        Class.forName('java.lang.invoke.MethodHandle')
    } catch (e) {
        capable = false
    }

    capable && !rootProject.hasProperty('skipIndy')
}

def INDY_SYSTEM_PROP = 'groovy.target.indy'

rootProject.ext.useIndy = {
    boolean indy = false

    // first, check if a system property activates indy support
    indy |= System.hasProperty('indy') && Boolean.valueOf(System.getProperty('indy'))

    // ultimately, check if the main project has an extension property setting indy to true
    // which is the case if the build is started with -Pindy=true or during install/dist tasks
    indy |= rootProject.hasProperty('indy') && (Boolean.valueOf(rootProject.indy))

    // set the groovy runtime system property to ensure forked junit test will get the indy flag properly
    if (indy) {
        System.setProperty(INDY_SYSTEM_PROP, 'true')
    } else {
        if (System.properties[INDY_SYSTEM_PROP]) {
            System.properties.remove(INDY_SYSTEM_PROP)
        }
    }

    indy && rootProject.indyCapable()
}