org.jetbrains.kotlin.fir.analysis.checkers.syntax.FirTypeParameterSyntaxChecker.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.fir.analysis.checkers.syntax
import org.jetbrains.kotlin.KtPsiSourceElement
import org.jetbrains.kotlin.KtSourceElement
import org.jetbrains.kotlin.fir.analysis.checkers.SourceNavigator.Companion.withNavigator
import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
import org.jetbrains.kotlin.diagnostics.reportOn
import org.jetbrains.kotlin.fir.declarations.FirTypeParameter
import org.jetbrains.kotlin.fir.psi
import org.jetbrains.kotlin.psi.KtTypeConstraint
import org.jetbrains.kotlin.psi.KtTypeParameter
object FirTypeParameterSyntaxChecker : FirDeclarationSyntaxChecker() {
override fun isApplicable(element: FirTypeParameter, source: KtSourceElement): Boolean =
element.bounds.size >= 2
override fun checkPsi(
element: FirTypeParameter,
source: KtPsiSourceElement,
psi: KtTypeParameter,
context: CheckerContext,
reporter: DiagnosticReporter
) {
val (constraint, params) = element.bounds.partition { it.psi?.parent is KtTypeConstraint }
if (params.isNotEmpty() && constraint.isNotEmpty()) {
reporter.reportOn(source, FirErrors.MISPLACED_TYPE_PARAMETER_CONSTRAINTS, context)
}
}
override fun checkPsiOrLightTree(
element: FirTypeParameter,
source: KtSourceElement,
context: CheckerContext,
reporter: DiagnosticReporter
) {
val (constraint, params) = element.withNavigator {
element.bounds.partition { it.isInTypeConstraint() }
}
if (params.isNotEmpty() && constraint.isNotEmpty()) {
reporter.reportOn(source, FirErrors.MISPLACED_TYPE_PARAMETER_CONSTRAINTS, context)
}
}
}