org.jetbrains.kotlin.js.coroutine.CoroutineTransformationContext.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.js.coroutine
import org.jetbrains.kotlin.js.backend.ast.JsFunction
import org.jetbrains.kotlin.js.backend.ast.JsName
import org.jetbrains.kotlin.js.backend.ast.JsScope
import org.jetbrains.kotlin.js.backend.ast.metadata.coroutineMetadata
class CoroutineTransformationContext(private val scope: JsScope, function: JsFunction) {
private val localVariableNameCache = mutableMapOf()
private val usedLocalVariableIds = mutableSetOf()
val entryBlock = CoroutineBlock()
val globalCatchBlock = CoroutineBlock()
val metadata = function.coroutineMetadata!!
val controllerFieldName by lazy { scope.declareName("\$controller") }
val returnValueFieldName by lazy { scope.declareName("\$returnValue") }
val receiverFieldName by lazy { scope.declareName("\$this") }
fun getFieldName(variableName: JsName) = localVariableNameCache.getOrPut(variableName) {
val baseId = "local\$${variableName.ident}"
var suggestedId = baseId
var suffix = 0
while (!usedLocalVariableIds.add(suggestedId)) {
suggestedId = "${baseId}_${suffix++}"
}
scope.declareName(suggestedId)
}
}