org.jetbrains.kotlin.cfg.pseudocode.PseudocodeLabel.kt Maven / Gradle / Ivy
/*
* 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.cfg.pseudocode
import org.jetbrains.kotlin.cfg.Label
import org.jetbrains.kotlin.cfg.pseudocode.instructions.Instruction
import org.jetbrains.kotlin.psi.KtElement
class PseudocodeLabel internal constructor(
override val pseudocode: PseudocodeImpl, override val name: String, private val comment: String?
) : Label {
private val instructionList: List get() = pseudocode.mutableInstructionList
private val correspondingElement: KtElement get() = pseudocode.correspondingElement
override var targetInstructionIndex = -1
override fun toString(): String = if (comment == null) name else "$name [$comment]"
override fun resolveToInstruction(): Instruction {
val index = targetInstructionIndex
when {
index < 0 ->
error(
"resolveToInstruction: unbound label $name " +
"in subroutine ${correspondingElement.text} with instructions $instructionList"
)
index >= instructionList.size ->
error(
"resolveToInstruction: incorrect index $index for label $name " +
"in subroutine ${correspondingElement.text} with instructions $instructionList"
)
else ->
return instructionList[index]
}
}
fun copy(newPseudocode: PseudocodeImpl, newLabelIndex: Int): PseudocodeLabel =
PseudocodeLabel(newPseudocode, "L" + newLabelIndex, "copy of $name, $comment")
}