1 files changed, 84 insertions, 0 deletions
diff --git a/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/binary/KSDeclarationDescriptorImpl.kt b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/binary/KSDeclarationDescriptorImpl.kt
new file mode 100644
index 00000000..db041b26
--- /dev/null
+++ b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/binary/KSDeclarationDescriptorImpl.kt
@@ -0,0 +1,84 @@
+/*
+ * 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.binary
+
+import com.google.devtools.ksp.memoized
+import com.google.devtools.ksp.processing.impl.KSNameImpl
+import com.google.devtools.ksp.symbol.*
+import org.jetbrains.kotlin.backend.common.serialization.findPackage
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.load.java.descriptors.JavaClassDescriptor
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
+import org.jetbrains.kotlin.resolve.descriptorUtil.parents
+import org.jetbrains.kotlin.resolve.descriptorUtil.parentsWithSelf
+import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstanceOrNull
+
+abstract class KSDeclarationDescriptorImpl(private val descriptor: DeclarationDescriptor) : KSDeclaration {
+
+    override val origin by lazy {
+        descriptor.origin
+    }
+
+    override val containingFile: KSFile? = null
+
+    override val location: Location = NonExistLocation
+
+    override val annotations: Sequence<KSAnnotation> by lazy {
+        descriptor.annotations.asSequence().map { KSAnnotationDescriptorImpl.getCached(it, this) }.memoized()
+    }
+
+    override val parentDeclaration: KSDeclaration? by lazy {
+        val containingDescriptor = descriptor.parents.first()
+        when (containingDescriptor) {
+            is ClassDescriptor -> KSClassDeclarationDescriptorImpl.getCached(containingDescriptor)
+            is FunctionDescriptor -> KSFunctionDeclarationDescriptorImpl.getCached(containingDescriptor)
+            else -> null
+        } as KSDeclaration?
+    }
+
+    override val parent: KSNode? by lazy {
+        parentDeclaration
+    }
+
+    override val packageName: KSName by lazy {
+        KSNameImpl.getCached(descriptor.findPackage().fqName.asString())
+    }
+
+    override val qualifiedName: KSName by lazy {
+        KSNameImpl.getCached(descriptor.fqNameSafe.asString())
+    }
+
+    override val simpleName: KSName by lazy {
+        KSNameImpl.getCached(descriptor.name.asString())
+    }
+
+    override fun toString(): String {
+        return this.simpleName.asString()
+    }
+
+    override val docString = null
+}
+
+val DeclarationDescriptor.origin: Origin
+    get() = if (parentsWithSelf.firstIsInstanceOrNull<JavaClassDescriptor>() != null) {
+        Origin.JAVA_LIB
+    } else {
+        Origin.KOTLIN_LIB
+    }