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org.jetbrains.kotlin.js.resolve.diagnostics.JsExternalChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2018 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.js.resolve.diagnostics
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.builtins.isExtensionFunctionType
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.diagnostics.DiagnosticFactory0
import org.jetbrains.kotlin.diagnostics.DiagnosticSink
import org.jetbrains.kotlin.js.PredefinedAnnotation
import org.jetbrains.kotlin.js.translate.utils.AnnotationsUtils
import org.jetbrains.kotlin.lexer.KtTokens
import org.jetbrains.kotlin.name.FqNameUnsafe
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
import org.jetbrains.kotlin.resolve.checkers.DeclarationChecker
import org.jetbrains.kotlin.resolve.checkers.DeclarationCheckerContext
import org.jetbrains.kotlin.resolve.descriptorUtil.*
import org.jetbrains.kotlin.resolve.isInlineClassType
import org.jetbrains.kotlin.resolve.source.getPsi
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.TypeUtils
object JsExternalChecker : DeclarationChecker {
val DEFINED_EXTERNALLY_PROPERTY_NAMES = setOf(FqNameUnsafe("kotlin.js.noImpl"), FqNameUnsafe("kotlin.js.definedExternally"))
override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
if (!AnnotationsUtils.isNativeObject(descriptor)) return
val trace = context.trace
if (!DescriptorUtils.isTopLevelDeclaration(descriptor)) {
if (isDirectlyExternal(declaration, descriptor) && descriptor !is PropertyAccessorDescriptor) {
trace.report(ErrorsJs.NESTED_EXTERNAL_DECLARATION.on(declaration))
}
}
if (descriptor is ClassDescriptor) {
val classKind = when {
descriptor.isData -> "data class"
descriptor.isInner -> "inner class"
descriptor.isInline -> "inline class"
descriptor.isFun -> "fun interface"
DescriptorUtils.isAnnotationClass(descriptor) -> "annotation class"
else -> null
}
if (classKind != null) {
trace.report(ErrorsJs.WRONG_EXTERNAL_DECLARATION.on(declaration, classKind))
}
}
if (descriptor is PropertyAccessorDescriptor && isDirectlyExternal(declaration, descriptor)) {
trace.report(ErrorsJs.WRONG_EXTERNAL_DECLARATION.on(declaration, "property accessor"))
} else if (isPrivateMemberOfExternalClass(descriptor)) {
trace.report(ErrorsJs.WRONG_EXTERNAL_DECLARATION.on(declaration, "private member of class"))
}
if (descriptor is ClassDescriptor && descriptor.kind != ClassKind.INTERFACE &&
descriptor.containingDeclaration.let { it is ClassDescriptor && it.kind == ClassKind.INTERFACE }
) {
trace.report(ErrorsJs.NESTED_CLASS_IN_EXTERNAL_INTERFACE.on(declaration))
}
if (descriptor !is PropertyAccessorDescriptor && descriptor.isExtension) {
val target = when (descriptor) {
is FunctionDescriptor -> "extension function"
is PropertyDescriptor -> "extension property"
else -> "extension member"
}
trace.report(ErrorsJs.WRONG_EXTERNAL_DECLARATION.on(declaration, target))
}
if (descriptor is ClassDescriptor && descriptor.kind != ClassKind.ANNOTATION_CLASS) {
val superClasses = (listOfNotNull(descriptor.getSuperClassNotAny()) + descriptor.getSuperInterfaces()).toMutableSet()
if (descriptor.kind == ClassKind.ENUM_CLASS || descriptor.kind == ClassKind.ENUM_ENTRY) {
superClasses.removeAll { it.fqNameUnsafe == StandardNames.FqNames._enum }
}
if (superClasses.any { !AnnotationsUtils.isNativeObject(it) && it.fqNameSafe != StandardNames.FqNames.throwable }) {
trace.report(ErrorsJs.EXTERNAL_TYPE_EXTENDS_NON_EXTERNAL_TYPE.on(declaration))
}
}
if (descriptor is FunctionDescriptor && descriptor.isInline) {
trace.report(ErrorsJs.INLINE_EXTERNAL_DECLARATION.on(declaration))
}
fun reportOnParametersAndReturnTypesIf(
diagnosticFactory: DiagnosticFactory0,
condition: (KotlinType) -> Boolean
) {
if (descriptor is CallableMemberDescriptor && !(descriptor is PropertyAccessorDescriptor && descriptor.isDefault)) {
fun checkTypeIsNotInlineClass(type: KotlinType, elementToReport: KtElement) {
if (condition(type)) {
trace.report(diagnosticFactory.on(elementToReport))
}
}
for (p in descriptor.valueParameters) {
val ktParam = p.source.getPsi() as? KtParameter ?: declaration
checkTypeIsNotInlineClass(p.varargElementType ?: p.type, ktParam)
}
val elementToReport = when (declaration) {
is KtCallableDeclaration -> declaration.typeReference
is KtPropertyAccessor -> declaration.returnTypeReference
else -> declaration
}
elementToReport?.let {
checkTypeIsNotInlineClass(descriptor.returnType!!, it)
}
}
}
reportOnParametersAndReturnTypesIf(ErrorsJs.INLINE_CLASS_IN_EXTERNAL_DECLARATION, KotlinType::isInlineClassType)
reportOnParametersAndReturnTypesIf(ErrorsJs.EXTENSION_FUNCTION_IN_EXTERNAL_DECLARATION, KotlinType::isExtensionFunctionType)
if (descriptor is CallableMemberDescriptor && descriptor.isNonAbstractMemberOfInterface() &&
!descriptor.isNullableProperty()
) {
trace.report(ErrorsJs.NON_ABSTRACT_MEMBER_OF_EXTERNAL_INTERFACE.on(declaration))
}
checkBody(declaration, descriptor, trace, trace.bindingContext)
checkDelegation(declaration, descriptor, trace)
checkAnonymousInitializer(declaration, trace)
checkEnumEntry(declaration, trace)
checkConstructorPropertyParam(declaration, descriptor, trace)
}
private fun checkBody(
declaration: KtDeclaration, descriptor: DeclarationDescriptor,
diagnosticHolder: DiagnosticSink, bindingContext: BindingContext
) {
if (declaration is KtProperty && descriptor is PropertyAccessorDescriptor) return
if (declaration is KtDeclarationWithBody && !declaration.hasValidExternalBody(bindingContext)) {
diagnosticHolder.report(ErrorsJs.WRONG_BODY_OF_EXTERNAL_DECLARATION.on(declaration.bodyExpression!!))
} else if (declaration is KtDeclarationWithInitializer &&
declaration.initializer?.isDefinedExternallyExpression(bindingContext) == false
) {
diagnosticHolder.report(ErrorsJs.WRONG_INITIALIZER_OF_EXTERNAL_DECLARATION.on(declaration.initializer!!))
}
if (declaration is KtCallableDeclaration) {
for (defaultValue in declaration.valueParameters.mapNotNull { it.defaultValue }) {
if (!defaultValue.isDefinedExternallyExpression(bindingContext)) {
diagnosticHolder.report(ErrorsJs.WRONG_DEFAULT_VALUE_FOR_EXTERNAL_FUN_PARAMETER.on(defaultValue))
}
}
}
}
private fun checkDelegation(declaration: KtDeclaration, descriptor: DeclarationDescriptor, diagnosticHolder: DiagnosticSink) {
if (descriptor !is MemberDescriptor || !descriptor.isEffectivelyExternal()) return
if (declaration is KtClassOrObject) {
for (superTypeEntry in declaration.superTypeListEntries) {
when (superTypeEntry) {
is KtSuperTypeCallEntry -> {
diagnosticHolder.report(ErrorsJs.EXTERNAL_DELEGATED_CONSTRUCTOR_CALL.on(superTypeEntry.valueArgumentList!!))
}
is KtDelegatedSuperTypeEntry -> {
diagnosticHolder.report(ErrorsJs.EXTERNAL_DELEGATION.on(superTypeEntry))
}
}
}
} else if (declaration is KtSecondaryConstructor) {
val delegationCall = declaration.getDelegationCall()
if (!delegationCall.isImplicit) {
diagnosticHolder.report(ErrorsJs.EXTERNAL_DELEGATED_CONSTRUCTOR_CALL.on(delegationCall))
}
} else if (declaration is KtProperty && descriptor !is PropertyAccessorDescriptor) {
declaration.delegate?.let { delegate ->
diagnosticHolder.report(ErrorsJs.EXTERNAL_DELEGATION.on(delegate))
}
}
}
private fun checkAnonymousInitializer(declaration: KtDeclaration, diagnosticHolder: DiagnosticSink) {
if (declaration !is KtClassOrObject) return
for (anonymousInitializer in declaration.getAnonymousInitializers()) {
diagnosticHolder.report(ErrorsJs.EXTERNAL_ANONYMOUS_INITIALIZER.on(anonymousInitializer))
}
}
private fun checkEnumEntry(declaration: KtDeclaration, diagnosticHolder: DiagnosticSink) {
if (declaration !is KtEnumEntry) return
declaration.body?.let {
diagnosticHolder.report(ErrorsJs.EXTERNAL_ENUM_ENTRY_WITH_BODY.on(it))
}
}
private fun checkConstructorPropertyParam(
declaration: KtDeclaration,
descriptor: DeclarationDescriptor,
diagnosticHolder: DiagnosticSink
) {
if (descriptor !is PropertyDescriptor || declaration !is KtParameter) return
val containingClass = descriptor.containingDeclaration as ClassDescriptor
if (containingClass.isData || DescriptorUtils.isAnnotationClass(containingClass)) return
diagnosticHolder.report(ErrorsJs.EXTERNAL_CLASS_CONSTRUCTOR_PROPERTY_PARAMETER.on(declaration))
}
private fun isDirectlyExternal(declaration: KtDeclaration, descriptor: DeclarationDescriptor): Boolean {
if (declaration is KtProperty && descriptor is PropertyAccessorDescriptor) return false
return declaration.hasModifier(KtTokens.EXTERNAL_KEYWORD) ||
AnnotationsUtils.hasAnnotation(descriptor, PredefinedAnnotation.NATIVE)
}
private fun isPrivateMemberOfExternalClass(descriptor: DeclarationDescriptor): Boolean {
if (descriptor is PropertyAccessorDescriptor && descriptor.visibility == descriptor.correspondingProperty.visibility) return false
if (descriptor !is MemberDescriptor || descriptor.visibility != DescriptorVisibilities.PRIVATE) return false
val containingDeclaration = descriptor.containingDeclaration as? ClassDescriptor ?: return false
return AnnotationsUtils.isNativeObject(containingDeclaration)
}
private fun CallableMemberDescriptor.isNonAbstractMemberOfInterface() =
modality != Modality.ABSTRACT &&
DescriptorUtils.isInterface(containingDeclaration) &&
this !is PropertyAccessorDescriptor
private fun CallableMemberDescriptor.isNullableProperty() = this is PropertyDescriptor && TypeUtils.isNullableType(type)
private fun KtDeclarationWithBody.hasValidExternalBody(bindingContext: BindingContext): Boolean {
if (!hasBody()) return true
val body = bodyExpression!!
return when {
!hasBlockBody() -> body.isDefinedExternallyExpression(bindingContext)
body is KtBlockExpression -> {
val statement = body.statements.singleOrNull() ?: return false
statement.isDefinedExternallyExpression(bindingContext)
}
else -> false
}
}
private fun KtExpression.isDefinedExternallyExpression(bindingContext: BindingContext): Boolean {
val descriptor = getResolvedCall(bindingContext)?.resultingDescriptor as? PropertyDescriptor ?: return false
val container = descriptor.containingDeclaration as? PackageFragmentDescriptor ?: return false
return DEFINED_EXTERNALLY_PROPERTY_NAMES.any { container.fqNameUnsafe == it.parent() && descriptor.name == it.shortName() }
}
}
