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| 1 | +/* |
| 2 | + * This file is part of fabric-loom, licensed under the MIT License (MIT). |
| 3 | + * |
| 4 | + * Copyright (c) 2022 FabricMC |
| 5 | + * |
| 6 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | + * of this software and associated documentation files (the "Software"), to deal |
| 8 | + * in the Software without restriction, including without limitation the rights |
| 9 | + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | + * copies of the Software, and to permit persons to whom the Software is |
| 11 | + * furnished to do so, subject to the following conditions: |
| 12 | + * |
| 13 | + * The above copyright notice and this permission notice shall be included in all |
| 14 | + * copies or substantial portions of the Software. |
| 15 | + * |
| 16 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | + * SOFTWARE. |
| 23 | + */ |
| 24 | + |
| 25 | +package net.fabricmc.loom.kotlin.remapping |
| 26 | + |
| 27 | +import kotlinx.metadata.jvm.KotlinClassHeader |
| 28 | +import kotlinx.metadata.jvm.KotlinClassMetadata |
| 29 | +import org.objectweb.asm.AnnotationVisitor |
| 30 | +import org.objectweb.asm.Opcodes |
| 31 | +import org.objectweb.asm.commons.Remapper |
| 32 | +import org.objectweb.asm.tree.AnnotationNode |
| 33 | + |
| 34 | +class KotlinClassMetadataRemappingAnnotationVisitor(private val remapper: Remapper, val next: AnnotationVisitor) : |
| 35 | + AnnotationNode(Opcodes.ASM9, KotlinMetadataRemappingClassVisitor.ANNOTATION_DESCRIPTOR) { |
| 36 | + |
| 37 | + private var _name: String? = null |
| 38 | + |
| 39 | + override fun visit(name: String?, value: Any?) { |
| 40 | + super.visit(name, value) |
| 41 | + this._name = name |
| 42 | + } |
| 43 | + |
| 44 | + override fun visitEnd() { |
| 45 | + super.visitEnd() |
| 46 | + when (val metadata = readMetadata()) { |
| 47 | + is KotlinClassMetadata.Class -> { |
| 48 | + val klass = metadata.toKmClass() |
| 49 | + val writer = KotlinClassMetadata.Class.Writer() |
| 50 | + klass.accept(RemappingKmVisitors(remapper).RemappingKmClassVisitor(writer)) |
| 51 | + writeClassHeader(writer.write().header) |
| 52 | + } |
| 53 | + is KotlinClassMetadata.SyntheticClass -> { |
| 54 | + val klambda = metadata.toKmLambda() |
| 55 | + |
| 56 | + if (klambda != null) { |
| 57 | + val writer = KotlinClassMetadata.SyntheticClass.Writer() |
| 58 | + klambda.accept(RemappingKmVisitors(remapper).RemappingKmLambdaVisitor(writer)) |
| 59 | + writeClassHeader(writer.write().header) |
| 60 | + } else { |
| 61 | + accept(next) |
| 62 | + } |
| 63 | + } |
| 64 | + // Can only be turned into KmPackage which is useless data |
| 65 | + is KotlinClassMetadata.FileFacade, is KotlinClassMetadata.MultiFileClassPart, |
| 66 | + // Can't be turned into data |
| 67 | + is KotlinClassMetadata.MultiFileClassFacade, is KotlinClassMetadata.Unknown, null -> { |
| 68 | + // do nothing |
| 69 | + accept(next) |
| 70 | + } |
| 71 | + } |
| 72 | + } |
| 73 | + |
| 74 | + @Suppress("UNCHECKED_CAST") |
| 75 | + private fun readMetadata(): KotlinClassMetadata? { |
| 76 | + var kind: Int? = null |
| 77 | + var metadataVersion: IntArray? = null |
| 78 | + var data1: Array<String>? = null |
| 79 | + var data2: Array<String>? = null |
| 80 | + var extraString: String? = null |
| 81 | + var packageName: String? = null |
| 82 | + var extraInt: Int? = null |
| 83 | + |
| 84 | + if (values == null) { |
| 85 | + return null |
| 86 | + } |
| 87 | + |
| 88 | + values.chunked(2).forEach { (name, value) -> |
| 89 | + when (name) { |
| 90 | + "k" -> kind = value as Int |
| 91 | + "mv" -> metadataVersion = (value as List<Int>).toIntArray() |
| 92 | + "d1" -> data1 = (value as List<String>).toTypedArray() |
| 93 | + "d2" -> data2 = (value as List<String>).toTypedArray() |
| 94 | + "xs" -> extraString = value as String |
| 95 | + "pn" -> packageName = value as String |
| 96 | + "xi" -> extraInt = value as Int |
| 97 | + } |
| 98 | + } |
| 99 | + |
| 100 | + val header = KotlinClassHeader(kind, metadataVersion, data1, data2, extraString, packageName, extraInt) |
| 101 | + return KotlinClassMetadata.read(header) |
| 102 | + } |
| 103 | + |
| 104 | + private fun writeClassHeader(header: KotlinClassHeader) { |
| 105 | + val newNode = AnnotationNode(api, desc) |
| 106 | + newNode.values = this.values.toMutableList() |
| 107 | + |
| 108 | + newNode.run { |
| 109 | + for (i in values.indices step 2) { |
| 110 | + when (values[i]) { |
| 111 | + "k" -> values[i + 1] = header.kind |
| 112 | + "mv" -> values[i + 1] = header.metadataVersion.toList() |
| 113 | + "d1" -> values[i + 1] = header.data1.toList() |
| 114 | + "d2" -> values[i + 1] = header.data2.toList() |
| 115 | + "xs" -> values[i + 1] = header.extraString |
| 116 | + "pn" -> values[i + 1] = header.packageName |
| 117 | + "xi" -> values[i + 1] = header.extraInt |
| 118 | + } |
| 119 | + } |
| 120 | + } |
| 121 | + |
| 122 | + newNode.accept(next) |
| 123 | + } |
| 124 | +} |
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