org.jetbrains.kotlin.diagnostics.rendering.LanguageFeatureMessageRenderer.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.diagnostics.rendering
import org.jetbrains.kotlin.config.LanguageFeature
import org.jetbrains.kotlin.config.LanguageVersionSettings
class LanguageFeatureMessageRenderer @JvmOverloads constructor(
private val type: Type,
private val useHtml: Boolean = false
) : DiagnosticParameterRenderer> {
private val additionalFeatureMessages = mapOf(
LanguageFeature.UnitConversionsOnArbitraryExpressions to "You can also change the original type of this expression to (...) -> Unit"
)
enum class Type {
UNSUPPORTED,
WARNING,
ERROR
}
override fun render(obj: Pair, renderingContext: RenderingContext): String {
val (feature, settings) = obj
val since = feature.sinceVersion
val sb = StringBuilder()
sb.append("The feature \"").append(feature.presentableName).append("\" is ")
when (type) {
Type.UNSUPPORTED ->
when {
since == null ->
sb.append("experimental and should be enabled explicitly")
since > settings.languageVersion ->
sb.append("only available since language version ").append(since.versionString)
feature.sinceApiVersion > settings.apiVersion ->
sb.append("only available since API version ").append(feature.sinceApiVersion.versionString)
else ->
sb.append("disabled")
}
Type.WARNING -> sb.append("experimental")
Type.ERROR -> sb.append("experimental and disabled")
}
val hintUrl = feature.hintUrl
if (hintUrl != null) {
if (useHtml) {
sb.append(" (").append("see more here)")
} else {
sb.append(" (see: ").append(hintUrl).append(")")
}
}
if (feature in additionalFeatureMessages) {
sb.append(". ${additionalFeatureMessages[feature]}")
}
return sb.toString()
}
}