1 files changed, 78 insertions, 0 deletions
diff --git a/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/TypeComparisonProcessor.kt b/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/TypeComparisonProcessor.kt
new file mode 100644
index 00000000..f5850b7b
--- /dev/null
+++ b/test-utils/src/main/kotlin/com/google/devtools/ksp/processor/TypeComparisonProcessor.kt
@@ -0,0 +1,78 @@
+/*
+ * 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.processing.Resolver
+import com.google.devtools.ksp.symbol.*
+import com.google.devtools.ksp.visitor.KSTopDownVisitor
+
+open class TypeComparisonProcessor : AbstractTestProcessor() {
+    val results = mutableListOf<String>()
+    val typeCollector = TypeCollector()
+    val types = mutableSetOf<KSType>()
+
+    override fun process(resolver: Resolver): List<KSAnnotated> {
+        val files = resolver.getNewFiles()
+        val ignoredNames = mutableSetOf<String>()
+
+        files.forEach {
+            it.accept(typeCollector, types)
+            it.annotations.forEach {
+                if (it.shortName.asString() == "Suppress") {
+                    it.arguments.forEach {
+                        (it.value as List<String>).forEach {
+                            ignoredNames.add(it)
+                        }
+                    }
+                }
+            }
+        }
+
+        val sortedTypes = types.filterNot { it.declaration.simpleName.asString() in ignoredNames }.sortedBy {
+            it.toString()
+        }
+
+        for (i in sortedTypes) {
+            for (j in sortedTypes) {
+                results.add("$i ?= $j : ${i.isAssignableFrom(j)}")
+            }
+        }
+        return emptyList()
+    }
+
+    override fun toResult(): List<String> {
+        return results
+    }
+}
+
+class TypeCollectorNoAccessor : TypeCollector() {
+    override fun visitPropertyGetter(getter: KSPropertyGetter, data: MutableCollection<KSType>) {
+    }
+
+    override fun visitPropertySetter(setter: KSPropertySetter, data: MutableCollection<KSType>) {
+    }
+}
+
+open class TypeCollector : KSTopDownVisitor<MutableCollection<KSType>, Unit>() {
+    override fun defaultHandler(node: KSNode, data: MutableCollection<KSType>) = Unit
+
+    override fun visitTypeReference(typeReference: KSTypeReference, data: MutableCollection<KSType>) {
+        super.visitTypeReference(typeReference, data)
+        typeReference.resolve().let { data.add(it) }
+    }
+}