NoArg: Add compiler plugin

2016-10-05 21:43:41 +03:00
parent 6abde4223b
commit e626b121ad
28 changed files with 659 additions and 48 deletions
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2010-2016 JetBrains s.r.o.
+ *
+ * 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 org.jetbrains.kotlin.extensions
+
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
+import org.jetbrains.kotlin.psi.KtModifierListOwner
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
+import org.jetbrains.kotlin.types.TypeUtils
+
+interface AnnotationBasedExtension {
+    fun getAnnotationFqNames(modifierListOwner: KtModifierListOwner): List<String>
+
+    fun DeclarationDescriptor.hasSpecialAnnotation(modifierListOwner: KtModifierListOwner): Boolean {
+        if (annotations.any { it.isASpecialAnnotation(modifierListOwner) }) return true
+
+        if (this is ClassDescriptor) {
+            for (superType in TypeUtils.getAllSupertypes(defaultType)) {
+                val superTypeDescriptor = superType.constructor.declarationDescriptor as? ClassDescriptor ?: continue
+                if (superTypeDescriptor.annotations.any { it.isASpecialAnnotation(modifierListOwner) }) return true
+            }
+        }
+
+        return false
+    }
+
+    private fun AnnotationDescriptor.isASpecialAnnotation(
+            modifierListOwner: KtModifierListOwner,
+            allowMetaAnnotations: Boolean = true
+    ): Boolean {
+        val annotationType = type.constructor.declarationDescriptor ?: return false
+        if (annotationType.fqNameSafe.asString() in getAnnotationFqNames(modifierListOwner)) return true
+
+        if (allowMetaAnnotations) {
+            for (metaAnnotation in annotationType.annotations) {
+                if (metaAnnotation.isASpecialAnnotation(modifierListOwner, allowMetaAnnotations = false)) {
+                    return true
+                }
+            }
+        }
+
+        return false
+    }
+}