org.jetbrains.kotlin.fir.analysis.checkers.expression.FirExpressionAnnotationChecker.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.expression
import org.jetbrains.kotlin.KtFakeSourceElementKind
import org.jetbrains.kotlin.KtRealSourceElementKind
import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget
import org.jetbrains.kotlin.descriptors.annotations.KotlinTarget
import org.jetbrains.kotlin.fir.analysis.checkers.checkRepeatedAnnotation
import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
import org.jetbrains.kotlin.fir.analysis.checkers.getAllowedAnnotationTargets
import org.jetbrains.kotlin.fir.analysis.checkers.getDefaultUseSiteTarget
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.analysis.diagnostics.withSuppressedDiagnostics
import org.jetbrains.kotlin.fir.declarations.FirDeclaration
import org.jetbrains.kotlin.fir.expressions.FirBlock
import org.jetbrains.kotlin.fir.expressions.FirExpression
import org.jetbrains.kotlin.fir.expressions.FirStatement
import org.jetbrains.kotlin.fir.types.ConeKotlinType
import org.jetbrains.kotlin.fir.types.coneType
object FirExpressionAnnotationChecker : FirBasicExpressionChecker() {
override fun check(expression: FirStatement, context: CheckerContext, reporter: DiagnosticReporter) {
// Declarations are checked separately
// See KT-33658 about annotations on non-expression statements
if (expression is FirDeclaration ||
expression !is FirExpression ||
expression is FirBlock && (expression.source?.kind == KtRealSourceElementKind ||
expression.source?.kind == KtFakeSourceElementKind.DesugaredForLoop)
) return
val annotations = expression.annotations
if (annotations.isEmpty()) return
val annotationsMap = hashMapOf>()
for (annotation in annotations) {
val useSiteTarget = annotation.useSiteTarget ?: expression.getDefaultUseSiteTarget(annotation, context)
val existingTargetsForAnnotation = annotationsMap.getOrPut(annotation.annotationTypeRef.coneType) { arrayListOf() }
withSuppressedDiagnostics(annotation, context) { ctx ->
if (KotlinTarget.EXPRESSION !in annotation.getAllowedAnnotationTargets(ctx.session)) {
reporter.reportOn(annotation.source, FirErrors.WRONG_ANNOTATION_TARGET, "expression", ctx)
}
checkRepeatedAnnotation(useSiteTarget, existingTargetsForAnnotation, annotation, ctx, reporter)
}
existingTargetsForAnnotation.add(useSiteTarget)
}
}
}