1 files changed, 129 insertions, 0 deletions
diff --git a/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/kotlin/KSPropertyDeclarationImpl.kt b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/kotlin/KSPropertyDeclarationImpl.kt
new file mode 100644
index 00000000..312b73d1
--- /dev/null
+++ b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/kotlin/KSPropertyDeclarationImpl.kt
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2020 Google LLC
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ *
+ * 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 com.google.devtools.ksp.symbol.impl.kotlin
+
+import com.google.devtools.ksp.KSObjectCache
+import com.google.devtools.ksp.processing.impl.ResolverImpl
+import com.google.devtools.ksp.symbol.*
+import com.google.devtools.ksp.symbol.impl.*
+import com.google.devtools.ksp.symbol.impl.binary.KSPropertyGetterDescriptorImpl
+import com.google.devtools.ksp.symbol.impl.binary.KSPropertySetterDescriptorImpl
+import org.jetbrains.kotlin.descriptors.PropertyDescriptor
+import org.jetbrains.kotlin.descriptors.VariableDescriptorWithAccessors
+import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget
+import org.jetbrains.kotlin.lexer.KtTokens
+import org.jetbrains.kotlin.psi.KtAnnotated
+import org.jetbrains.kotlin.psi.KtAnnotationEntry
+import org.jetbrains.kotlin.psi.KtProperty
+import org.jetbrains.kotlin.psi.psiUtil.isExtensionDeclaration
+import org.jetbrains.kotlin.resolve.BindingContext
+
+class KSPropertyDeclarationImpl private constructor(val ktProperty: KtProperty) :
+    KSPropertyDeclaration,
+    KSDeclarationImpl(ktProperty),
+    KSExpectActual by KSExpectActualImpl(ktProperty) {
+    companion object : KSObjectCache<KtProperty, KSPropertyDeclarationImpl>() {
+        fun getCached(ktProperty: KtProperty) = cache.getOrPut(ktProperty) { KSPropertyDeclarationImpl(ktProperty) }
+    }
+
+    private val propertyDescriptor by lazy {
+        ResolverImpl.instance!!.resolveDeclaration(ktProperty) as? PropertyDescriptor
+    }
+
+    override val annotations: Sequence<KSAnnotation> by lazy {
+        ktProperty.filterUseSiteTargetAnnotations().map { KSAnnotationImpl.getCached(it) }
+    }
+
+    override val extensionReceiver: KSTypeReference? by lazy {
+        if (ktProperty.isExtensionDeclaration()) {
+            KSTypeReferenceImpl.getCached(ktProperty.receiverTypeReference!!)
+        } else {
+            null
+        }
+    }
+
+    override val isMutable: Boolean by lazy {
+        ktProperty.isVar
+    }
+
+    override val hasBackingField: Boolean by lazy {
+        // taken from: https://github.com/JetBrains/kotlin/blob/master/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMembersCreator.kt#L104
+        when {
+            ktProperty.initializer != null -> true
+            ktProperty.hasModifier(KtTokens.LATEINIT_KEYWORD) -> true
+            else -> {
+                val context = ResolverImpl.instance!!.bindingTrace.bindingContext
+                val descriptor = ResolverImpl.instance!!.resolveDeclaration(ktProperty)
+                descriptor is PropertyDescriptor && context[BindingContext.BACKING_FIELD_REQUIRED, descriptor] == true
+            }
+        }
+    }
+
+    override val getter: KSPropertyGetter? by lazy {
+        ktProperty.getter?.let {
+            KSPropertyGetterImpl.getCached(it)
+        } ?: propertyDescriptor?.getter?.let {
+            KSPropertyGetterDescriptorImpl.getCached(it)
+        }
+    }
+
+    override val setter: KSPropertySetter? by lazy {
+        ktProperty.setter?.let {
+            KSPropertySetterImpl.getCached(it)
+        } ?: propertyDescriptor?.setter?.let {
+            KSPropertySetterDescriptorImpl.getCached(it)
+        }
+    }
+
+    override val type: KSTypeReference by lazy {
+        if (ktProperty.typeReference != null) {
+            KSTypeReferenceImpl.getCached(ktProperty.typeReference!!)
+        } else {
+            KSTypeReferenceDeferredImpl.getCached(this) {
+                val desc = propertyDescriptor as? VariableDescriptorWithAccessors
+                if (desc == null) {
+                    KSErrorType
+                } else {
+                    getKSTypeCached(desc.type)
+                }
+            }
+        }
+    }
+
+    override fun isDelegated(): Boolean = ktProperty.hasDelegate()
+
+    override fun findOverridee(): KSPropertyDeclaration? {
+        return propertyDescriptor?.findClosestOverridee()?.toKSPropertyDeclaration()
+    }
+
+    override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
+        return visitor.visitPropertyDeclaration(this, data)
+    }
+
+    override fun asMemberOf(containing: KSType): KSType =
+        ResolverImpl.instance!!.asMemberOf(this, containing)
+}
+
+internal fun KtAnnotated.filterUseSiteTargetAnnotations(): Sequence<KtAnnotationEntry> {
+    return this.annotationEntries.asSequence().filter { property ->
+        property.useSiteTarget?.getAnnotationUseSiteTarget()?.let {
+            it != AnnotationUseSiteTarget.PROPERTY_GETTER && it != AnnotationUseSiteTarget.PROPERTY_SETTER &&
+                it != AnnotationUseSiteTarget.SETTER_PARAMETER && it != AnnotationUseSiteTarget.CONSTRUCTOR_PARAMETER
+        } ?: true
+    }
+}