org.jetbrains.kotlin.preprocessor.Modifications.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 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.preprocessor
import com.intellij.openapi.util.TextRange
import com.intellij.openapi.util.text.StringUtil
import org.jetbrains.kotlin.psi.*
data class Modification(val range: TextRange, val apply: (String) -> String)
class CollectModificationsVisitor(evaluators: List) : KtTreeVisitorVoid() {
val elementModifications: Map> =
evaluators.associateBy(keySelector = { it }, valueTransform = { arrayListOf() })
override fun visitDeclaration(declaration: KtDeclaration) {
super.visitDeclaration(declaration)
val annotations = declaration.parseConditionalAnnotations()
val name = (declaration as? KtNamedDeclaration)?.nameAsSafeName ?: declaration.name
val declResults = arrayListOf>()
for ((evaluator, modifications) in elementModifications) {
val conditionalResult = evaluator(annotations)
declResults.add(evaluator to conditionalResult)
if (!conditionalResult)
modifications.add(Modification(declaration.textRange) { rangeText ->
buildString {
append("/* Not available on $evaluator */")
repeat(StringUtil.getLineBreakCount(rangeText)) { append("\n") }
}
})
else {
val targetName = annotations.filterIsInstance().singleOrNull()
if (targetName != null) {
val placeholderName = (declaration as KtNamedDeclaration).nameAsName!!.asString()
val realName = targetName.name
modifications.add(Modification(declaration.textRange) { it.replace(placeholderName, realName) })
}
}
}
//println("declaration: ${declaration.javaClass.simpleName} $name${if (annotations.isNotEmpty()) ", annotations: ${annotations.joinToString { it.toString() }}, evaluation result: $declResults" else ""}")
}
}
fun List.applyTo(sourceText: String): String {
return buildString {
var prevIndex = 0
for ((range, transform) in this@applyTo) {
append(sourceText, prevIndex, range.startOffset)
append(transform(range.substring(sourceText)))
prevIndex = range.endOffset
}
append(sourceText, prevIndex, sourceText.length)
}
}