1 /* 2 * Copyright 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.compose.lint 18 19 import com.intellij.psi.PsiClass 20 import com.intellij.psi.PsiClassOwner 21 import com.intellij.psi.PsiMember 22 import com.intellij.psi.PsiMethod 23 import com.intellij.psi.PsiType 24 import com.intellij.psi.util.InheritanceUtil 25 26 /** Returns whether [this] has [packageName] as its package name. */ isInPackageNamenull27fun PsiMember.isInPackageName(packageName: PackageName): Boolean { 28 val actual = (containingFile as? PsiClassOwner)?.packageName 29 return packageName.javaPackageName == actual 30 } 31 32 /** Whether this [PsiMethod] returns Unit */ 33 val PsiMethod.returnsUnit 34 get() = returnType.isVoidOrUnit 35 36 /** 37 * Whether this [PsiType] is `void` or [Unit] 38 * 39 * In Kotlin 1.6 some expressions now explicitly return [Unit] instead of just being [PsiType.VOID], 40 * so this returns whether this type is either. 41 */ 42 val PsiType?.isVoidOrUnit 43 get() = this == PsiType.VOID || this?.canonicalText == "kotlin.Unit" 44 45 /** @return whether [this] inherits from [name]. Returns `true` if [this] _is_ directly [name]. */ inheritsFromnull46fun PsiType.inheritsFrom(name: Name) = InheritanceUtil.isInheritor(this, name.javaFqn) 47 48 /** @return whether [this] inherits from [name]. Returns `true` if [this] _is_ directly [name]. */ 49 fun PsiClass.inheritsFrom(name: Name) = InheritanceUtil.isInheritor(this, name.javaFqn) 50