org.jetbrains.kotlin.cli.common.repl.replUtil.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2016 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.common.repl

import com.google.common.base.Throwables
import com.intellij.openapi.util.text.StringUtil
import com.intellij.util.LineSeparator
import org.jetbrains.kotlin.utils.repl.ReplEscapeType
import java.io.File
import java.net.URLClassLoader

// using '#' to avoid collisions with xml escaping
private val SOURCE_CHARS: List = listOf("\r", "\n", "#")
private val XML_REPLACEMENTS: List = listOf("#r", "#n", "#diez")

private val END_LINE: String = LineSeparator.getSystemLineSeparator().separatorString
private const val XML_PREAMBLE = ""

fun String.replUnescapeLineBreaks() = StringUtil.replace(this, XML_REPLACEMENTS, SOURCE_CHARS)
fun String.replEscapeLineBreaks() = StringUtil.replace(this, SOURCE_CHARS, XML_REPLACEMENTS)

fun String.replOutputAsXml(escapeType: ReplEscapeType): String {
    val escapedXml = StringUtil.escapeXmlEntities(replEscapeLineBreaks())
    return "$XML_PREAMBLE$escapedXml"
}

fun String.replInputAsXml(): String {
    val escapedXml = StringUtil.escapeXmlEntities(replEscapeLineBreaks())
    return "$XML_PREAMBLE$escapedXml"
}

fun String.replAddLineBreak() = this + END_LINE
fun String.replRemoveLineBreaksInTheEnd() = trimEnd(*END_LINE.toCharArray())
fun String.replNormalizeLineBreaks() = replace(END_LINE, "\n")

fun makeScriptBaseName(codeLine: ReplCodeLine) =
        "Line_${codeLine.no}${if (codeLine.generation > REPL_CODE_LINE_FIRST_GEN) "_gen_${codeLine.generation}" else ""}"

fun scriptResultFieldName(lineNo: Int) = "res$lineNo"

fun renderReplStackTrace(cause: Throwable, startFromMethodName: String): String {
    val newTrace = arrayListOf()
    var skip = true
    for (element in cause.stackTrace.reversed()) {
        if ("${element.className}.${element.methodName}" == startFromMethodName) {
            skip = false
        }
        if (!skip) {
            newTrace.add(element)
        }
    }

    val resultingTrace = newTrace.reversed().dropLast(1)

    @Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "UsePropertyAccessSyntax")
    (cause as java.lang.Throwable).setStackTrace(resultingTrace.toTypedArray())

    return Throwables.getStackTraceAsString(cause).trimEnd()
}

internal fun ClassLoader.listAllUrlsAsFiles(): List {
    val parents = generateSequence(this) { loader -> loader.parent }.filterIsInstance(URLClassLoader::class.java)
    return parents.fold(emptyList()) { accum, loader ->
        loader.listLocalUrlsAsFiles() + accum
    }.distinct()
}

internal fun URLClassLoader.listLocalUrlsAsFiles(): List {
    return this.urLs.mapNotNull { it.toString().removePrefix("file:") }.map(::File)
}

internal fun  List.ensureNotEmpty(error: String): List {
    if (this.isEmpty()) throw IllegalStateException(error)
    return this
}