vcs: Add a method to the VCS facade to get lines where code was removed (after that lines)

This change is needed to provide this info for run-to-cursor (see next commit)


(cherry picked from commit ea7653981da641a726cfd382b5033b9aacc0e437)

IJ-CR-174622

GitOrigin-RevId: 9049f1eb908b7d3cfa3d20ac2307a70e150314c9

platform/lang-impl/api-dump-experimental.txt

@@ -123,6 +123,7 @@ c:com.intellij.build.output.BuildOutputInstantReaderImpl
 - a:getTitle():java.lang.String
 c:com.intellij.codeInsight.actions.VcsFacade
 - *:createPatchPreviewComponent(com.intellij.openapi.project.Project,java.util.Map):javax.swing.JComponent
+- *:getLinesWithRemovedRangesAfter(com.intellij.psi.PsiFile):java.util.List
 *:com.intellij.codeInsight.codeVision.CodeVisionProvider
 - *sf:Companion:com.intellij.codeInsight.codeVision.CodeVisionProvider$Companion
 - sf:EP_NAME:java.lang.String

platform/lang-impl/src/com/intellij/codeInsight/actions/VcsFacade.java

@@ -132,6 +132,14 @@ public class VcsFacade {
     return null;
   }
 
+  /**
+   * @return the list of lines where some code (after it) was removed.
+   */
+  @ApiStatus.Experimental
+  public @NotNull List<Integer> getLinesWithRemovedRangesAfter(@NotNull PsiFile file) {
+    return Collections.emptyList();
+  }
+
   /**
    * Notify VCS that local file content has changed in a way, that IDE might not detect, and uncommitted changes should be updated.
    *

platform/vcs-impl/lang/src/com/intellij/codeInsight/actions/VcsFacadeImpl.java

@@ -114,6 +114,22 @@ public final class VcsFacadeImpl extends VcsFacade {
     return getChangedRangesInfo(document, computeRanges(document, contentFromVcs));
   }
 
+  @Override
+  public @NotNull List<Integer> getLinesWithRemovedRangesAfter(@NotNull PsiFile file) {
+    Project project = file.getProject();
+    Document document = PsiDocumentManager.getInstance(project).getDocument(file);
+    if (document == null) return emptyList();
+    LineStatusTracker<?> tracker = LineStatusTrackerManager.getInstance(project).getLineStatusTracker(document);
+    if (tracker == null) return emptyList();
+
+    List<? extends Range> trackerRanges = tracker.getRanges();
+    if (trackerRanges == null) return emptyList();
+    return trackerRanges.stream()
+      .filter(range -> range.getType() == Range.DELETED)
+      .map( range -> range.getLine1())
+      .toList();
+  }
+
   @Override
   public @NotNull List<PsiFile> getChangedFilesFromDirs(@NotNull Project project,
                                                         @NotNull List<? extends PsiDirectory> psiDirs) {