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Kapt.kt
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Kapt.kt
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/*
* Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.kapt3.base
import com.sun.tools.javac.util.Context
import org.jetbrains.kotlin.kapt3.base.util.KaptLogger
import org.jetbrains.kotlin.kapt3.base.util.WriterBackedKaptLogger
import org.jetbrains.kotlin.kapt3.base.util.doOpenInternalPackagesIfRequired
import org.jetbrains.kotlin.kapt3.base.util.info
import kotlin.system.measureTimeMillis
object Kapt {
private const val JAVAC_CONTEXT_CLASS = "com.sun.tools.javac.util.Context"
@JvmStatic
@Suppress("unused")
fun kaptFlags(rawFlags: Set<String>): KaptFlags {
return KaptFlags.fromSet(KaptFlag.values().filterTo(mutableSetOf()) { it.name in rawFlags })
}
@JvmStatic
@Suppress("unused")
fun kapt(options: KaptOptions): Boolean {
doOpenInternalPackagesIfRequired()
val logger = WriterBackedKaptLogger(options[KaptFlag.VERBOSE])
if (!Kapt.checkJavacComponentsAccess(logger)) {
return false
}
val kaptContext = KaptContext(options, false, logger)
logger.info { options.logString("stand-alone mode") }
val javaSourceFiles = options.collectJavaSourceFiles(kaptContext.sourcesToReprocess)
val processorLoader = ProcessorLoader(options, logger)
processorLoader.use {
val processors = processorLoader.loadProcessors(findClassLoaderWithJavac())
val annotationProcessingTime = measureTimeMillis {
kaptContext.doAnnotationProcessing(
javaSourceFiles,
processors.processors,
binaryTypesToReprocess = collectAggregatedTypes(kaptContext.sourcesToReprocess)
)
}
logger.info { "Annotation processing took $annotationProcessingTime ms" }
}
return true
}
fun checkJavacComponentsAccess(logger: KaptLogger): Boolean {
try {
Class.forName(JAVAC_CONTEXT_CLASS)
return true
} catch (e: ClassNotFoundException) {
logger.error("'$JAVAC_CONTEXT_CLASS' class can't be found ('tools.jar' is absent in the plugin classpath). Kapt won't work.")
return false
}
}
private fun findClassLoaderWithJavac(): ClassLoader {
// Class.getClassLoader() may return null if the class is defined in a bootstrap class loader
return Context::class.java.classLoader ?: ClassLoader.getSystemClassLoader()
}
}