103 lines
3.0 KiB
Kotlin
103 lines
3.0 KiB
Kotlin
package app.git.graph
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import org.eclipse.jgit.lib.AnyObjectId
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import org.eclipse.jgit.lib.Ref
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import org.eclipse.jgit.revwalk.RevCommit
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private val NO_CHILDREN = arrayOf<GraphNode>()
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private val NO_LANES = arrayOf<GraphLane>()
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private val NO_LANE = GraphLane(INVALID_LANE_POSITION)
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val NO_REFS = listOf<Ref>()
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open class GraphNode(id: AnyObjectId?) : RevCommit(id), IGraphNode {
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var forkingOffLanes: Array<GraphLane> = NO_LANES
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var passingLanes: Array<GraphLane> = NO_LANES
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var mergingLanes: Array<GraphLane> = NO_LANES
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var lane: GraphLane = NO_LANE
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var children: Array<GraphNode> = NO_CHILDREN
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var refs: List<Ref> = NO_REFS
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fun addForkingOffLane(graphLane: GraphLane) {
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forkingOffLanes = addLane(graphLane, forkingOffLanes)
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}
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fun addPassingLane(graphLane: GraphLane) {
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passingLanes = addLane(graphLane, passingLanes)
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}
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fun addMergingLane(graphLane: GraphLane) {
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mergingLanes = addLane(graphLane, mergingLanes)
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}
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fun addChild(c: GraphNode, addFirst: Boolean = false) {
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when (val childrenCount = children.count()) {
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0 -> children = arrayOf(c)
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1 -> {
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if (!c.id.equals(children[0].id)) {
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children = if (addFirst) {
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arrayOf(c, children[0])
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} else
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arrayOf(children[0], c)
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}
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}
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else -> {
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for (pc in children)
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if (c.id.equals(pc.id))
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return
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val resultArray = if (addFirst) {
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val childList = mutableListOf(c)
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childList.addAll(children)
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childList.toTypedArray()
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} else {
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children.copyOf(childrenCount + 1).run {
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this[childrenCount] = c
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requireNoNulls()
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}
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}
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children = resultArray
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}
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}
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}
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val childCount: Int
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get() {
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return children.size
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}
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override fun reset() {
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forkingOffLanes = NO_LANES
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passingLanes = NO_LANES
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mergingLanes = NO_LANES
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children = NO_CHILDREN
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lane = NO_LANE
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super.reset()
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}
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private fun addLane(graphLane: GraphLane, lanes: Array<GraphLane>): Array<GraphLane> {
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var newLines = lanes
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when (val linesCount = newLines.count()) {
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0 -> newLines = arrayOf(graphLane)
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1 -> newLines = arrayOf(newLines[0], graphLane)
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else -> {
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val n = newLines.copyOf(linesCount + 1).run {
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this[linesCount] = graphLane
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requireNoNulls()
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}
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newLines = n
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}
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}
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return newLines
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}
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override val graphParentCount: Int
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get() = parentCount
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override fun getGraphParent(nth: Int): GraphNode {
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return getParent(nth) as GraphNode
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}
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} |