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Create SnapshotsPreviewRuntimeRetentionTransform to change Previews t…
…o runtime retention (#139)
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102 changes: 102 additions & 0 deletions
102
...ols/android/gradle/instrumentation/snapshots/SnapshotsPreviewRuntimeRetentionTransform.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package com.emergetools.android.gradle.instrumentation.snapshots | ||
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| import com.android.build.api.instrumentation.AsmClassVisitorFactory | ||
| import com.android.build.api.instrumentation.ClassContext | ||
| import com.android.build.api.instrumentation.ClassData | ||
| import com.android.build.api.instrumentation.InstrumentationParameters | ||
| import org.gradle.api.provider.Property | ||
| import org.gradle.api.tasks.Input | ||
| import org.objectweb.asm.AnnotationVisitor | ||
| import org.objectweb.asm.ClassVisitor | ||
| import org.objectweb.asm.MethodVisitor | ||
| import org.slf4j.Logger | ||
| import org.slf4j.LoggerFactory | ||
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| abstract class SnapshotsPreviewRuntimeRetentionTransformFactory : AsmClassVisitorFactory<SnapshotsPreviewRuntimeRetentionTransformFactory.Params> { | ||
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| interface Params : InstrumentationParameters { | ||
| @get:Input | ||
| val invalidate: Property<Long> | ||
| } | ||
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| companion object { | ||
| private val logger by lazy { | ||
| LoggerFactory.getLogger(SnapshotsPreviewRuntimeRetentionTransformFactory::class.java) | ||
| } | ||
| } | ||
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| override fun createClassVisitor( | ||
| classContext: ClassContext, | ||
| nextClassVisitor: ClassVisitor, | ||
| ): ClassVisitor { | ||
| return SnapshotsPreviewRuntimeRetentionTransform( | ||
| instrumentationContext.apiVersion.get(), | ||
| nextClassVisitor, | ||
| logger, | ||
| ) | ||
| } | ||
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| override fun isInstrumentable(classData: ClassData): Boolean { | ||
| // Need to instrument all classes to ensure that the annotations are visible at runtime | ||
| return true | ||
| } | ||
| } | ||
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| class SnapshotsPreviewRuntimeRetentionTransform( | ||
| api: Int, | ||
| classVisitor: ClassVisitor?, | ||
| private val logger: Logger, | ||
| ) : ClassVisitor(api, classVisitor) { | ||
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| companion object { | ||
| const val TAG = "SnapshotRuntimePreviewClassVisitor" | ||
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| const val PREVIEW_ANNOTATION_DESC = "Landroidx/compose/ui/tooling/preview/Preview;" | ||
| const val PREVIEW_CONTAINER_ANNOTATION_DESC = | ||
| "Landroidx/compose/ui/tooling/preview/Preview\$Container;" | ||
| } | ||
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| override fun visitMethod( | ||
| access: Int, | ||
| name: String, | ||
| descriptor: String, | ||
| signature: String?, | ||
| exceptions: Array<String>?, | ||
| ): MethodVisitor { | ||
| val mv = super.visitMethod(access, name, descriptor, signature, exceptions) | ||
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| return object : MethodVisitor(api, mv) { | ||
| override fun visitAnnotation( | ||
| desc: String, | ||
| visible: Boolean, | ||
| ): AnnotationVisitor? { | ||
| if (desc == PREVIEW_ANNOTATION_DESC || desc == PREVIEW_CONTAINER_ANNOTATION_DESC) { | ||
| logger.info( | ||
| "$TAG: Modifying method annotation visible at runtime to true for annotation $desc $visible" | ||
| ) | ||
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| // Force the annotation to be visible at runtime | ||
| return super.visitAnnotation(desc, true) | ||
| } | ||
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| return super.visitAnnotation(desc, visible) | ||
| } | ||
| } | ||
| } | ||
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| override fun visitAnnotation( | ||
| desc: String, | ||
| visible: Boolean, | ||
| ): AnnotationVisitor? { | ||
| if (desc == PREVIEW_ANNOTATION_DESC || desc == PREVIEW_CONTAINER_ANNOTATION_DESC) { | ||
| logger.info( | ||
| "$TAG: Modifying class annotation visible at runtime to true for annotation $desc $visible" | ||
| ) | ||
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| // Force the annotation to be visible at runtime | ||
| return super.visitAnnotation(desc, true) | ||
| } | ||
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| return super.visitAnnotation(desc, visible) | ||
| } | ||
| } |