mirror of https://github.com/sbt/sbt.git
76 lines
2.6 KiB
Scala
76 lines
2.6 KiB
Scala
package xsbt
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object ChangeReport
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{
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def modified[T](files: Set[T]) =
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new EmptyChangeReport[T]
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{
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override def checked = files
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override def modified = files
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override def markAllModified = this
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}
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def unmodified[T](files: Set[T]) =
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new EmptyChangeReport[T]
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{
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override def checked = files
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override def unmodified = files
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}
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}
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/** The result of comparing some current set of objects against a previous set of objects.*/
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trait ChangeReport[T] extends NotNull
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{
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/** The set of all of the objects in the current set.*/
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def checked: Set[T]
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/** All of the objects that are in the same state in the current and reference sets.*/
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def unmodified: Set[T]
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/** All checked objects that are not in the same state as the reference. This includes objects that are in both
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* sets but have changed and files that are only in one set.*/
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def modified: Set[T] // all changes, including added
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/** All objects that are only in the current set.*/
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def added: Set[T]
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/** All objects only in the previous set*/
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def removed: Set[T]
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def +++(other: ChangeReport[T]): ChangeReport[T] = new CompoundChangeReport(this, other)
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/** Generate a new report with this report's unmodified set included in the new report's modified set. The new report's
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* unmodified set is empty. The new report's added, removed, and checked sets are the same as in this report. */
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def markAllModified: ChangeReport[T] =
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new ChangeReport[T]
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{
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def checked = ChangeReport.this.checked
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def unmodified = Set.empty[T]
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def modified = ChangeReport.this.checked
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def added = ChangeReport.this.added
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def removed = ChangeReport.this.removed
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override def markAllModified = this
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}
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override def toString =
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{
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val labels = List("Checked", "Modified", "Unmodified", "Added", "Removed")
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val sets = List(checked, modified, unmodified, added, removed)
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val keyValues = labels.zip(sets).map{ case (label, set) => label + ": " + set.mkString(", ") }
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keyValues.mkString("Change report:\n\t", "\n\t", "")
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}
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}
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class EmptyChangeReport[T] extends ChangeReport[T]
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{
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def checked = Set.empty[T]
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def unmodified = Set.empty[T]
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def modified = Set.empty[T]
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def added = Set.empty[T]
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def removed = Set.empty[T]
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override def toString = "No changes"
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}
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trait InvalidationReport[T] extends NotNull
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{
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def valid: Set[T]
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def invalid: Set[T]
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def invalidProducts: Set[T]
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}
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private class CompoundChangeReport[T](a: ChangeReport[T], b: ChangeReport[T]) extends ChangeReport[T]
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{
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lazy val checked = a.checked ++ b.checked
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lazy val unmodified = a.unmodified ++ b.unmodified
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lazy val modified = a.modified ++ b.modified
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lazy val added = a.added ++ b.added
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lazy val removed = a.removed ++ b.removed
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} |