com.autonomousapps.model.internal.DependencyGraphView.kt Maven / Gradle / Ivy

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Analyzes dependency usage in Android and JVM projects

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// Copyright (c) 2024. Tony Robalik.
// SPDX-License-Identifier: Apache-2.0
// Guava's Graph
@file:Suppress("UnstableApiUsage")

package com.autonomousapps.model.internal

import com.autonomousapps.internal.unsafeLazy
import com.autonomousapps.model.Coordinates
import com.autonomousapps.model.declaration.Variant
import com.google.common.graph.ElementOrder
import com.google.common.graph.Graph
import com.google.common.graph.GraphBuilder
import com.google.common.graph.ImmutableGraph

/**
 * This is a metadata view of a [configurationName] classpath. It expresses the relationship between the dependencies in
 * the classpath, as a dependency resolution engine (such as Gradle's) understands it. [name] is the Android variant, or
 * the JVM [SourceSet][org.gradle.api.tasks.SourceSet], that it represents.
 */
internal class DependencyGraphView(
  val variant: Variant,
  /** E.g. `compileClasspath` or `debugRuntimeClasspath`. */
  val configurationName: String,
  /** The dependency DAG. */
  internal val graph: Graph
) {

  /** The variant (Android) or source set (JVM) name. */
  val name: String = "${variant.variant},${variant.kind.name}"

  val nodes: Set by unsafeLazy { graph.nodes() }

  companion object {
    internal fun newGraphBuilder(): ImmutableGraph.Builder {
      return GraphBuilder.directed()
        .allowsSelfLoops(false)
        .incidentEdgeOrder(ElementOrder.stable())
        .immutable()
    }
  }

  override fun equals(other: Any?): Boolean {
    if (this === other) return true
    if (javaClass != other?.javaClass) return false

    other as DependencyGraphView

    if (name != other.name) return false
    if (configurationName != other.configurationName) return false
    if (graph != other.graph) return false

    return true
  }

  override fun hashCode(): Int {
    var result = name.hashCode()
    result = 31 * result + configurationName.hashCode()
    result = 31 * result + graph.hashCode()
    return result
  }
}