org.jetbrains.kotlin.resolve.jvm.checkers.ExternalFunChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 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.resolve.jvm.checkers
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.diagnostics.DiagnosticSink
import org.jetbrains.kotlin.diagnostics.Errors
import org.jetbrains.kotlin.lexer.KtTokens
import org.jetbrains.kotlin.psi.KtDeclaration
import org.jetbrains.kotlin.psi.KtDeclarationWithBody
import org.jetbrains.kotlin.psi.KtPropertyAccessor
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.checkers.SimpleDeclarationChecker
import org.jetbrains.kotlin.resolve.inline.InlineUtil
import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
class ExternalFunChecker : SimpleDeclarationChecker {
override fun check(
declaration: KtDeclaration,
descriptor: DeclarationDescriptor,
diagnosticHolder: DiagnosticSink,
bindingContext: BindingContext
) {
if (descriptor !is MemberDescriptor || !descriptor.isExternal) return
if (descriptor !is FunctionDescriptor) {
val target = when (descriptor) {
is PropertyDescriptor -> "property"
is ClassDescriptor -> "class"
else -> "non-function declaration"
}
diagnosticHolder.report(Errors.WRONG_MODIFIER_TARGET.on(declaration, KtTokens.EXTERNAL_KEYWORD, target))
return
}
if (DescriptorUtils.isInterface(descriptor.containingDeclaration)) {
diagnosticHolder.report(ErrorsJvm.EXTERNAL_DECLARATION_IN_INTERFACE.on(declaration))
}
else if (descriptor is CallableMemberDescriptor &&
descriptor.modality == Modality.ABSTRACT) {
if (declaration is KtPropertyAccessor) {
diagnosticHolder.report(ErrorsJvm.EXTERNAL_DECLARATION_CANNOT_BE_ABSTRACT.on(declaration.property))
}
else {
diagnosticHolder.report(ErrorsJvm.EXTERNAL_DECLARATION_CANNOT_BE_ABSTRACT.on(declaration))
}
}
if (descriptor !is ConstructorDescriptor && declaration is KtDeclarationWithBody && declaration.hasBody()) {
diagnosticHolder.report(ErrorsJvm.EXTERNAL_DECLARATION_CANNOT_HAVE_BODY.on(declaration))
}
if (InlineUtil.isInline(descriptor)) {
diagnosticHolder.report(ErrorsJvm.EXTERNAL_DECLARATION_CANNOT_BE_INLINED.on(declaration))
}
}
}