org.jetbrains.kotlin.cli.js.dce.K2JSDce.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* 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.
*/
package org.jetbrains.kotlin.cli.js.dce
import org.jetbrains.kotlin.cli.common.CLITool
import org.jetbrains.kotlin.cli.common.ExitCode
import org.jetbrains.kotlin.cli.common.arguments.K2JSDceArguments
import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
import org.jetbrains.kotlin.cli.common.messages.MessageCollector
import org.jetbrains.kotlin.config.Services
import org.jetbrains.kotlin.js.dce.DeadCodeElimination
import org.jetbrains.kotlin.js.dce.InputFile
import org.jetbrains.kotlin.js.dce.extractRoots
import org.jetbrains.kotlin.js.dce.printTree
import java.io.File
class K2JSDce : CLITool() {
override fun createArguments(): K2JSDceArguments = K2JSDceArguments()
override fun execImpl(messageCollector: MessageCollector, services: Services, arguments: K2JSDceArguments): ExitCode {
val baseDir = File(arguments.outputDirectory ?: "min")
val files = arguments.freeArgs.map { arg ->
val parts = arg.split(File.pathSeparator, ignoreCase = false, limit = 2)
val inputName = parts[0]
val moduleName = parts.getOrNull(1) ?: ""
val resolvedModuleName = if (!moduleName.isEmpty()) moduleName else File(inputName).nameWithoutExtension
InputFile(inputName, File(baseDir, resolvedModuleName + ".js").absolutePath, resolvedModuleName)
}
if (files.isEmpty() && !arguments.version) {
messageCollector.report(CompilerMessageSeverity.ERROR, "no source files")
return ExitCode.COMPILATION_ERROR
}
if (!checkSourceFiles(messageCollector, files)) {
return ExitCode.COMPILATION_ERROR
}
val includedDeclarations = arguments.declarationsToKeep.orEmpty().toSet()
val dceResult = DeadCodeElimination.run(files, includedDeclarations) {
messageCollector.report(CompilerMessageSeverity.LOGGING, it)
}
val nodes = dceResult.reachableNodes
val reachabilitySeverity = if (arguments.printReachabilityInfo) CompilerMessageSeverity.INFO else CompilerMessageSeverity.LOGGING
messageCollector.report(reachabilitySeverity, "")
for (node in nodes.extractRoots()) {
printTree(node, { messageCollector.report(reachabilitySeverity, it) },
printNestedMembers = false, showLocations = true)
}
return ExitCode.OK
}
private fun checkSourceFiles(messageCollector: MessageCollector, files: List): Boolean {
return files.fold(true) { ok, file ->
val inputFile = File(file.path)
val outputFile = File(file.outputPath)
val inputOk = when {
!inputFile.exists() -> {
messageCollector.report(CompilerMessageSeverity.ERROR, "source file or directory not found: " + file.path)
false
}
inputFile.isDirectory -> {
messageCollector.report(CompilerMessageSeverity.ERROR, "input file '" + file.path + "' is a directory")
false
}
else -> true
}
val outputOk = when {
outputFile.exists() && outputFile.isDirectory -> {
messageCollector.report(CompilerMessageSeverity.ERROR, "cannot open output file '${outputFile.path}': is a directory")
false
}
else -> true
}
ok and inputOk and outputOk
}
}
override fun executableScriptFileName(): String = "kotlin-dce-js"
companion object {
@JvmStatic
fun main(args: Array) {
CLITool.doMain(K2JSDce(), args)
}
}
}