Ilya Gorbunov
72 lines
3.0 KiB
Kotlin
72 lines
3.0 KiB
Kotlin
/*
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* Copyright 2010-2015 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jetbrains.kotlin.preprocessor
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import com.intellij.openapi.util.TextRange
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import com.intellij.openapi.util.text.StringUtil
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import org.jetbrains.kotlin.psi.*
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data class Modification(val range: TextRange, val apply: (String) -> String)
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class CollectModificationsVisitor(evaluators: List<Evaluator>) : KtTreeVisitorVoid() {
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val elementModifications: Map<Evaluator, MutableList<Modification>> =
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evaluators.associateBy(keySelector = { it }, valueTransform = { arrayListOf<Modification>() })
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override fun visitDeclaration(declaration: KtDeclaration) {
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super.visitDeclaration(declaration)
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val annotations = declaration.parseConditionalAnnotations()
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val name = (declaration as? KtNamedDeclaration)?.nameAsSafeName ?: declaration.name
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val declResults = arrayListOf<Pair<Evaluator, Boolean>>()
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for ((evaluator, modifications) in elementModifications) {
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val conditionalResult = evaluator(annotations)
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declResults.add(evaluator to conditionalResult)
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if (!conditionalResult)
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modifications.add(Modification(declaration.textRange) { rangeText ->
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buildString {
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append("/* Not available on $evaluator */")
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repeat(StringUtil.getLineBreakCount(rangeText)) { append("\n") }
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}
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})
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else {
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val targetName = annotations.filterIsInstance<Conditional.TargetName>().singleOrNull()
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if (targetName != null) {
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val placeholderName = (declaration as KtNamedDeclaration).nameAsName!!.asString()
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val realName = targetName.name
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modifications.add(Modification(declaration.textRange) { it.replace(placeholderName, realName) })
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}
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}
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}
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//println("declaration: ${declaration.javaClass.simpleName} $name${if (annotations.isNotEmpty()) ", annotations: ${annotations.joinToString { it.toString() }}, evaluation result: $declResults" else ""}")
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}
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}
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fun List<Modification>.applyTo(sourceText: String): String {
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return buildString {
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var prevIndex = 0
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for ((range, transform) in this@applyTo) {
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append(sourceText, prevIndex, range.startOffset)
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append(transform(range.substring(sourceText)))
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prevIndex = range.endOffset
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}
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append(sourceText, prevIndex, sourceText.length)
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}
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} |