|
| 1 | +/* |
| 2 | + * Copyright (C) 2023 The Dagger Authors. |
| 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 dagger.hilt.processor.internal.kotlin |
| 18 | + |
| 19 | +import androidx.room.compiler.processing.XAnnotation |
| 20 | +import androidx.room.compiler.processing.XFieldElement |
| 21 | +import androidx.room.compiler.processing.XMethodElement |
| 22 | +import androidx.room.compiler.processing.XTypeElement |
| 23 | +import kotlin.Metadata |
| 24 | +import kotlin.metadata.declaresDefaultValue |
| 25 | +import kotlin.metadata.KmClass |
| 26 | +import kotlin.metadata.KmConstructor |
| 27 | +import kotlin.metadata.KmFunction |
| 28 | +import kotlin.metadata.KmProperty |
| 29 | +import kotlin.metadata.KmValueParameter |
| 30 | +import kotlin.metadata.jvm.KotlinClassMetadata |
| 31 | +import kotlin.metadata.jvm.fieldSignature |
| 32 | +import kotlin.metadata.jvm.getterSignature |
| 33 | +import kotlin.metadata.jvm.signature |
| 34 | +import kotlin.metadata.jvm.syntheticMethodForAnnotations |
| 35 | + |
| 36 | +/** Container classes for kotlin metadata types. */ |
| 37 | +class ClassMetadata private constructor(private val kmClass: KmClass) { |
| 38 | + val functionsBySignature = buildList<FunctionMetadata> { |
| 39 | + addAll(kmClass.constructors.map { ConstructorMetadata(it) }) |
| 40 | + addAll(kmClass.functions.map { MethodMetadata(it) }) |
| 41 | + }.associateBy { it.signature } |
| 42 | + |
| 43 | + val propertiesBySignature = |
| 44 | + kmClass.properties |
| 45 | + .filter { it.fieldSignature != null } |
| 46 | + .map { PropertyMetadata(it) } |
| 47 | + .associateBy { it.fieldSignature } |
| 48 | + |
| 49 | + fun constructors(): List<FunctionMetadata> = |
| 50 | + functionsBySignature.values.filterIsInstance<ConstructorMetadata>() |
| 51 | + |
| 52 | + companion object { |
| 53 | + /** Parse Kotlin class metadata from a given type element. */ |
| 54 | + @JvmStatic |
| 55 | + fun of(typeElement: XTypeElement): ClassMetadata { |
| 56 | + val metadataAnnotation = checkNotNull(typeElement.getAnnotation(Metadata::class)).value |
| 57 | + return when (val classMetadata = KotlinClassMetadata.readStrict(metadataAnnotation)) { |
| 58 | + is KotlinClassMetadata.Class -> ClassMetadata(classMetadata.kmClass) |
| 59 | + else -> error("Unsupported metadata type: ${classMetadata}") |
| 60 | + } |
| 61 | + } |
| 62 | + } |
| 63 | +} |
| 64 | + |
| 65 | +class ConstructorMetadata(private val kmConstructor: KmConstructor) : FunctionMetadata { |
| 66 | + override val name = "<init>" |
| 67 | + override val signature = kmConstructor.signature!!.toString() |
| 68 | + override val parameters = kmConstructor.valueParameters.map { ParameterMetadata(it) } |
| 69 | +} |
| 70 | + |
| 71 | +class MethodMetadata(private val kmFunction: KmFunction) : FunctionMetadata { |
| 72 | + override val name = kmFunction.name |
| 73 | + override val signature = kmFunction.signature!!.toString() |
| 74 | + override val parameters = kmFunction.valueParameters.map { ParameterMetadata(it) } |
| 75 | +} |
| 76 | + |
| 77 | +interface FunctionMetadata { |
| 78 | + val name: String |
| 79 | + val signature: String |
| 80 | + val parameters: List<ParameterMetadata> |
| 81 | +} |
| 82 | + |
| 83 | +class PropertyMetadata(private val kmProperty: KmProperty) { |
| 84 | + val name = kmProperty.name |
| 85 | + |
| 86 | + /** Returns the JVM field descriptor of the backing field of this property. */ |
| 87 | + val fieldSignature = kmProperty.fieldSignature?.toString() |
| 88 | + |
| 89 | + val getterSignature = kmProperty.getterSignature?.toString() |
| 90 | + |
| 91 | + /** Returns JVM method descriptor of the synthetic method for property annotations. */ |
| 92 | + val methodForAnnotationsSignature = kmProperty.syntheticMethodForAnnotations?.toString() |
| 93 | +} |
| 94 | + |
| 95 | +class ParameterMetadata(private val kmValueParameter: KmValueParameter) { |
| 96 | + val name = kmValueParameter.name |
| 97 | + |
| 98 | + fun declaresDefaultValue() = kmValueParameter.declaresDefaultValue |
| 99 | +} |
| 100 | + |
0 commit comments