Examples of org.eclipse.text.edits.TextEdit$InsertionComparator

org.eclipse.text.edits.TextEdit
A text edit describes an elementary text manipulation operation. Edits are executed by applying them to a document (e.g. an instance of IDocument ).
Text edits form a tree. Clients can navigate the tree upwards, from child to parent, as well as downwards. Newly created edits are un-parented. New edits are added to the tree by calling one of the add methods on a parent edit.

An edit tree is well formed in the following sense:
- a parent edit covers all its children
- children don't overlap
- an edit with length 0 can't have any children
Any manipulation of the tree that violates one of the above requirements results in a MalformedTreeException.

Insert edits are represented by an edit of length 0. If more than one insert edit exists at the same offset then the edits are executed in the order in which they have been added to a parent. The following code example:
```
 IDocument document= new Document("org"); MultiTextEdit edit= new MultiTextEdit(); edit.addChild(new InsertEdit(0, "www.")); edit.addChild(new InsertEdit(0, "eclipse.")); edit.apply(document); 
```
therefore results in string: "www.eclipse.org".

Text edits can be executed in a mode where the edit's region is updated to reflect the edit's position in the changed document. Region updating is enabled by default or can be requested by passing UPDATE_REGIONS to the {@link #apply(IDocument,int) apply(IDocument, int)} method. In the above examplethe region of the InsertEdit(0, "eclipse.") edit after executing the root edit is [3, 8]. If the region of an edit got deleted during change execution the region is set to [-1, -1] and the method {@link #isDeleted() isDeleted} returns true.
This class isn't intended to be subclassed outside of the edit framework. Clients are only allowed to subclass MultiTextEdit. @since 3.0 @noextend This class is not intended to be subclassed by clients.

  }




  private final void doTextReplace(int offset, int len, String insertString, TextEditGroup editGroup) {
    if (len > 0 || insertString.length() > 0) {
      TextEdit edit= new ReplaceEdit(offset, len, insertString);
      addEdit(edit);
      if (editGroup != null) {
        addEditGroup(editGroup, edit);
      }
    }

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      }
    }
  }


  private final TextEdit doTextCopy(TextEdit sourceEdit, int destOffset, int sourceIndentLevel, String destIndentString, TextEditGroup editGroup) {
    TextEdit targetEdit;
    SourceModifier modifier= new SourceModifier(sourceIndentLevel, destIndentString, this.formatter.getTabWidth(), this.formatter.getIndentWidth());


    if (sourceEdit instanceof MoveSourceEdit) {
      MoveSourceEdit moveEdit= (MoveSourceEdit) sourceEdit;
      moveEdit.setSourceModifier(modifier);

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      }


      Object data= curr.data;
      if (data instanceof TextEditGroup) { // tracking a node
        // need to split and create 2 edits as tracking node can surround replaced node.
        TextEdit edit= new RangeMarker(insertOffset, 0);
        addEditGroup((TextEditGroup) data, edit);
        addEdit(edit);
        if (curr.length != 0) {
          int end= offset + curr.length;
          int k= i + 1;
          while (k < markers.size() && ((NodeMarker) markers.get(k)).offset < end) {
            k++;
          }
          curr.offset= end;
          curr.length= 0;
          markers.add(k, curr); // add again for end position
        }
        currPos= offset;
      } else {
        String destIndentString=  this.formatter.getIndentString(getCurrentLine(formatted, offset));
        if (data instanceof CopyPlaceholderData) { // replace with a copy/move target
          CopySourceInfo copySource= ((CopyPlaceholderData) data).copySource;
          int srcIndentLevel= getIndent(copySource.getNode().getStartPosition());
          TextEdit sourceEdit= getCopySourceEdit(copySource);
          doTextCopy(sourceEdit, insertOffset, srcIndentLevel, destIndentString, editGroup);
          currPos= offset + curr.length; // continue to insert after the replaced string
          if (needsNewLineForLineComment(copySource.getNode(), formatted, currPos)) {
            doTextInsert(insertOffset, getLineDelimiter(), editGroup);
          }

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    TextEditGroup editGroup= this.eventStore.getTrackedNodeData(node);
    if (editGroup != null) {
      SourceRange range= getExtendedRange(node);
      int offset= range.getStartPosition();
      int length= range.getLength();
      TextEdit edit= new RangeMarker(offset, length);
      addEditGroup(editGroup, edit);
      addEdit(edit);
      this.currentEdit= edit;
    }

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   * complete
   */
  private void processCompilationUnitResource(ICompilationUnit source, PackageFragment dest) throws JavaModelException {
    String newCUName = getNewNameFor(source);
    String destName = (newCUName != null) ? newCUName : source.getElementName();
    TextEdit edit = updateContent(source, dest, newCUName); // null if unchanged


    // TODO (frederic) remove when bug 67606 will be fixed (bug 67823)
    // store encoding (fix bug 66898)
    IFile sourceResource = (IFile)source.getResource();
    String sourceEncoding = null;

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            this.parser.setSource(cu);
            CompilationUnit astCU = (CompilationUnit) this.parser.createAST(this.progressMonitor);
            AST ast = astCU.getAST();
            ASTRewrite rewrite = ASTRewrite.create(ast);
            updatePackageStatement(astCU, newFragName, rewrite, cu);
            TextEdit edits = rewrite.rewriteAST();
            applyTextEdit(cu, edits);
            cu.save(null, false);
          }
        }
      }

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    }
    return codeFormatter;
  }


  public static String formatCode(String source) {
    TextEdit edit = getCodeFormatter().format(CodeFormatter.K_UNKNOWN, source, 0, source.length(), 0, System.getProperty("line.separator")); //$NON-NLS-1$
    if (edit != null) {
      IDocument document = new Document(source);
      try {
        edit.apply(document);
        return document.get();
      } catch (Exception e) {
        VisualSwingPlugin.getLogger().error(e);
      }
    }

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    }
    return null;
  }


  private TextEdit doCreateSaveAction(IDocument document, IRegion[] changedRegions) throws BadLocationException {
    TextEdit rootEdit = null;
    for (IRegion region : changedRegions) {
      int lastLine = document.getLineOfOffset(region.getOffset() + region.getLength());
      for (int line = firstLine(region, document); line <= lastLine; line++) {
        IRegion lineRegion = document.getLineInformation(line);
        if (lineRegion.getLength() == 0) {
          continue;
        }
        int lineStart = lineRegion.getOffset();
        int lineEnd = lineStart + lineRegion.getLength();
        int charPos = rightMostNonWhitespaceChar(document, lineStart, lineEnd);
        if (charPos >= lineEnd) {
          continue;
        }
        // check partition - don't remove whitespace inside strings
        ITypedRegion partition = getPartition(document, DEFAULT_PARTITIONING, charPos, false);
        if ("__string".equals(partition.getType())) {
          continue;
        }
        if (rootEdit == null) {
          rootEdit = new MultiTextEdit();
        }
        rootEdit.addChild(new DeleteEdit(charPos, lineEnd - charPos));
      }
    }
    return rootEdit;
  }

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  }


  private void performSaveActions(IProgressMonitor monitor,
      IFileEditorInput editorInput, IDocument document) throws CoreException {
    IRegion[] changedRegions = changedRegions(monitor, editorInput, document);
    TextEdit edit = saveActions.createSaveAction(document, changedRegions);
    if (edit == null) {
      return;
    }
    try {
      IDocumentUndoManager manager = getDocumentUndoManager(document);
      manager.beginCompoundChange();
      edit.apply(document);
      manager.endCompoundChange();
    } catch (Throwable t) {
      throw new CoreException(error(t));
    }
  }

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        }


        bodyDeclarations.removeAll(declarationsToDelete);


        // computation of the text edits
        TextEdit edits = astRoot.rewrite(document, asyncContents.getJavaProject().getOptions(true));


        // computation of the new source code
        edits.apply(document);
        String newSource = document.get();


        // update of the compilation unit
        clientPackage.createCompilationUnit(remoteServiceAsyncName + ".java", newSource, true, monitor); //$NON-NLS-1$

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