1 files changed, 113 insertions, 0 deletions
diff --git a/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/OverrideeProcessor.kt b/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/OverrideeProcessor.kt
new file mode 100644
index 00000000..9015f41b
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+++ b/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/OverrideeProcessor.kt
@@ -0,0 +1,113 @@
+/*
+ * 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.processor
+
+import com.google.devtools.ksp.closestClassDeclaration
+import com.google.devtools.ksp.getClassDeclarationByName
+import com.google.devtools.ksp.processing.Resolver
+import com.google.devtools.ksp.symbol.*
+
+@Suppress("unused") // used by tests
+class OverrideeProcessor : AbstractTestProcessor() {
+    private val results = mutableListOf<String>()
+
+    override fun toResult() = results
+
+    override fun process(resolver: Resolver): List<KSAnnotated> {
+        logSubject(resolver, "NoOverride")
+        logSubject(resolver, "Subject")
+        logSubject(resolver, "JavaSubject.Subject")
+        logSubject(resolver, "lib.Subject")
+        logSubject(resolver, "ConflictingSubject1")
+        logSubject(resolver, "ConflictingSubject2")
+        logSubject(resolver, "ConflictingSubject3")
+        logSubject(resolver, "ConflictingSubject4")
+        logSubject(resolver, "OverrideOrder1")
+        logSubject(resolver, "OverrideOrder2")
+        logSubject(resolver, "JavaAccessorImpl")
+        logSubject(resolver, "JavaAnno")
+        logSubject(resolver, "JavaAnnos")
+        logSubject(resolver, "PrimaryConstructorOverride")
+        return emptyList()
+    }
+
+    private fun logSubject(resolver: Resolver, qName: String) {
+        results.add("$qName:")
+        val subject = resolver.getClassDeclarationByName(qName)!!
+        subject.declarations.filterIsInstance<KSClassDeclaration>().forEach {
+            logClass(it)
+        }
+        logClass(subject)
+    }
+
+    private fun logClass(subject: KSClassDeclaration) {
+        subject.declarations.filterIsInstance<KSPropertyDeclaration>()
+            .forEach {
+                checkOverridee(it)
+            }
+        subject.declarations.filterIsInstance<KSFunctionDeclaration>()
+            .filterNot { it.simpleName.asString() in IGNORED_METHOD_NAMES }
+            .forEach {
+                checkOverridee(it)
+            }
+    }
+
+    private fun checkOverridee(declaration: KSDeclaration) {
+        val signature = if (declaration is KSPropertyDeclaration) declaration.toSignature() else
+            (declaration as KSFunctionDeclaration).toSignature()
+        val overrideeSignature = if (declaration is KSPropertyDeclaration) declaration.findOverridee()?.toSignature()
+        else (declaration as KSFunctionDeclaration).findOverridee()?.toSignature()
+        results.add("$signature -> $overrideeSignature")
+    }
+
+    private fun KSDeclaration.toSignature(): String {
+        return when (this) {
+            is KSFunctionDeclaration -> this.toSignature()
+            is KSPropertyDeclaration -> this.toSignature()
+            else -> throw IllegalStateException()
+        }
+    }
+
+    private fun KSFunctionDeclaration.toSignature(): String {
+        val self = this
+        return buildString {
+            append(self.closestClassDeclaration()?.simpleName?.asString())
+            append(".")
+            append(self.simpleName.asString())
+            append(
+                self.parameters.joinToString(", ", prefix = "(", postfix = ")") {
+                    "${it.name?.asString()}:${it.type.resolve().declaration.simpleName.asString()}"
+                }
+            )
+        }
+    }
+
+    private fun KSPropertyDeclaration.toSignature(): String {
+        val self = this
+        return buildString {
+            append(self.closestClassDeclaration()?.simpleName?.asString())
+            append(".")
+            append(self.simpleName.asString())
+        }
+    }
+
+    companion object {
+        // ignore these methods as we receive syntetics of it from compiled code
+        private val IGNORED_METHOD_NAMES = listOf("equals", "hashCode", "toString", "<init>")
+    }
+}