aboutsummaryrefslogtreecommitdiff
path: root/gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/AndroidPluginIntegration.kt
blob: 8bbfda29076fbdd57e5a2f5f4337f9dfc058fadd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
/*
 * Copyright 2021 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.gradle

import com.android.build.api.dsl.CommonExtension
import com.android.build.gradle.BaseExtension
import com.android.build.gradle.api.AndroidSourceSet
import org.gradle.api.Named
import org.gradle.api.Project
import org.gradle.api.file.FileCollection
import org.gradle.api.tasks.TaskProvider
import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJvmAndroidCompilation
import java.io.File

/**
 * This helper class handles communication with the android plugin.
 * It is isolated in a separate class to avoid adding dependency on the android plugin.
 * Instead, we add a compileOnly dependency to the Android Plugin, which means we can still function
 * without the Android plugin. The downside is that we need to ensure never to access Android
 * plugin APIs directly without checking its existence (we have tests covering that case).
 */
@Suppress("UnstableApiUsage") // some android APIs are unsable.
object AndroidPluginIntegration {

    private val agpPluginIds = listOf("com.android.application", "com.android.library", "com.android.dynamic-feature")

    fun findSourceSets(project: Project, onSourceSet: (String) -> Unit) {
        agpPluginIds.forEach { agpPluginId ->
            project.pluginManager.withPlugin(agpPluginId) {
                // for android apps, we need a configuration per source set
                decorateAndroidExtension(project, onSourceSet)
            }
        }
    }

    private fun decorateAndroidExtension(project: Project, onSourceSet: (String) -> Unit) {
        val sourceSets = when (val androidExt = project.extensions.getByName("android")) {
            is BaseExtension -> androidExt.sourceSets
            is CommonExtension<*, *, *, *> -> androidExt.sourceSets
            else -> throw RuntimeException("Unsupported Android Gradle plugin version.")
        }
        sourceSets.configureEach {
            onSourceSet(it.name)
        }
    }

    fun getCompilationSourceSets(kotlinCompilation: KotlinJvmAndroidCompilation): List<String> {
        return kotlinCompilation.androidVariant
            .sourceSets
            .filterIsInstance(AndroidSourceSet::class.java)
            .map { it.name }
    }

    fun registerGeneratedJavaSources(
        project: Project,
        kotlinCompilation: KotlinJvmAndroidCompilation,
        kspTaskProvider: TaskProvider<KspTaskJvm>,
        javaOutputDir: File,
        classOutputDir: File,
        resourcesOutputDir: FileCollection,
    ) {
        val kspJavaOutput = project.fileTree(javaOutputDir).builtBy(kspTaskProvider)
        val kspClassOutput = project.fileTree(classOutputDir).builtBy(kspTaskProvider)
        kspJavaOutput.include("**/*.java")
        kspClassOutput.include("**/*.class")
        kotlinCompilation.androidVariant.registerExternalAptJavaOutput(kspJavaOutput)
        kotlinCompilation.androidVariant.registerPreJavacGeneratedBytecode(kspClassOutput)
        kotlinCompilation.androidVariant.registerPostJavacGeneratedBytecode(resourcesOutputDir)
    }
}