org.jetbrains.kotlin.js.inline.clean.FunctionPostProcessor.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.inline.clean
import org.jetbrains.kotlin.js.backend.ast.JsFunction
class FunctionPostProcessor(val root: JsFunction) {
val optimizations = listOf(
//{ TemporaryAssignmentElimination(root.body).apply() },
{ RedundantLabelRemoval(root.body).apply() },
{ EmptyStatementElimination(root.body).apply() },
{ WhileConditionFolding(root.body).apply() },
{ DoWhileGuardElimination(root.body).apply() },
{ TemporaryVariableElimination(root).apply() },
{ RedundantCallElimination(root.body).apply() },
{ IfStatementReduction(root.body).apply() },
{ DeadCodeElimination(root.body).apply() },
{ RedundantVariableDeclarationElimination(root.body).apply() },
{ RedundantStatementElimination(root).apply() },
{ CoroutineStateElimination(root.body).apply() }
)
// TODO: reduce to A || B, A && B if possible
fun apply() {
do {
var hasChanges = false
for (opt in optimizations) {
hasChanges = hasChanges or opt()
}
} while (hasChanges)
}
}