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Diffstat (limited to 'org.eclipse.text/src/org/eclipse/text/edits/CopySourceEdit.java')
| -rw-r--r-- | org.eclipse.text/src/org/eclipse/text/edits/CopySourceEdit.java | 309 |
1 files changed, 0 insertions, 309 deletions
diff --git a/org.eclipse.text/src/org/eclipse/text/edits/CopySourceEdit.java b/org.eclipse.text/src/org/eclipse/text/edits/CopySourceEdit.java deleted file mode 100644 index d66c640981a..00000000000 --- a/org.eclipse.text/src/org/eclipse/text/edits/CopySourceEdit.java +++ /dev/null @@ -1,309 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.text.edits; - -import java.util.ArrayList; -import java.util.List; - -import org.eclipse.jface.text.Assert; -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.IDocument; - -/** - * A copy source edit denotes the source of a copy operation. Copy - * source edits are only valid inside an edit tree if they have a - * corresponding traget edit. Furthermore the corresponding - * target edit can't be a direct or indirect child of the source - * edit. Violating one of two requirements will result in a <code> - * MalformedTreeException</code> when executing the edit tree. - * <p> - * A copy source edit can manange an optional source modifier. A - * source modifier can provide a set of replace edits which will - * to applied to the source before it gets inserted at the target - * position. - * - * @see org.eclipse.text.edits.CopyTargetEdit - * - * @since 3.0 - */ -public final class CopySourceEdit extends TextEdit { - - private CopyTargetEdit fTarget; - private ISourceModifier fModifier; - - private String fSourceContent; - private TextEdit fSourceRoot; - - private static class PartialCopier extends TextEditVisitor { - TextEdit fResult; - List fParents= new ArrayList(); - TextEdit fCurrentParent; - - public static TextEdit perform(TextEdit source) { - PartialCopier copier= new PartialCopier(); - source.accept(copier); - return copier.fResult; - } - private void manageCopy(TextEdit copy) { - if (fResult == null) - fResult= copy; - if (fCurrentParent != null) { - fCurrentParent.addChild(copy); - } - fParents.add(fCurrentParent); - fCurrentParent= copy; - } - public void postVisit(TextEdit edit) { - fCurrentParent= (TextEdit)fParents.remove(fParents.size() - 1); - } - public boolean visitNode(TextEdit edit) { - manageCopy(edit.doCopy()); - return true; - } - public boolean visit(CopySourceEdit edit) { - manageCopy(new RangeMarker(edit.getOffset(), edit.getLength())); - return true; - } - public boolean visit(CopyTargetEdit edit) { - manageCopy(new InsertEdit(edit.getOffset(), edit.getSourceEdit().getContent())); - return true; - } - public boolean visit(MoveSourceEdit edit) { - manageCopy(new DeleteEdit(edit.getOffset(), edit.getLength())); - return true; - } - public boolean visit(MoveTargetEdit edit) { - manageCopy(new InsertEdit(edit.getOffset(), edit.getSourceEdit().getContent())); - return true; - } - } - - /** - * Constructs a new copy source edit. - * - * @param offset the edit's offset - * @param length the edit's length - */ - public CopySourceEdit(int offset, int length) { - super(offset, length); - } - - /** - * Constructs a new copy source edit. - * - * @param offset the edit's offset - * @param length the edit's length - * @param target the edit's target - */ - public CopySourceEdit(int offset, int length, CopyTargetEdit target) { - this(offset, length); - setTargetEdit(target); - } - - /* - * Copy Constructor - */ - private CopySourceEdit(CopySourceEdit other) { - super(other); - if (other.fModifier != null) - fModifier= other.fModifier.copy(); - } - - /** - * Returns the associated traget edit or <code>null</code> - * if no target edit is associated yet. - * - * @return the target edit or <code>null</code> - */ - public CopyTargetEdit getTargetEdit() { - return fTarget; - } - - /** - * Sets the target edit. - * - * @param edit the new target edit. - * - * @exception MalformedTreeException is thrown if the target edit - * is a direct or indirect child of the source edit - */ - public void setTargetEdit(CopyTargetEdit edit) throws MalformedTreeException { - Assert.isNotNull(edit); - if (fTarget != edit) { - fTarget= edit; - fTarget.setSourceEdit(this); - } - } - - /** - * Returns the current source modifier or <code>null</code> - * if no source modifier is set. - * - * @return the source modifier - */ - public ISourceModifier getSourceModifier() { - return fModifier; - } - - /** - * Sets the optional source modifier. - * - * @param modifier the source modifier or <code>null</code> - * if no source modification is need. - */ - public void setSourceModifier(ISourceModifier modifier) { - fModifier= modifier; - } - - /* non Java-doc - * @see TextEdit#doCopy - */ - protected TextEdit doCopy() { - return new CopySourceEdit(this); - } - - /* (non-Javadoc) - * @see TextEdit#accept0 - */ - protected void accept0(TextEditVisitor visitor) { - boolean visitChildren = visitor.visit(this); - if (visitChildren) { - acceptChildren(visitor); - } - } - - //---- API for CopyTargetEdit ------------------------------------------------ - - /* package */ String getContent() { - // The source content can be null if the edit wasn't executed - // due to an exclusion list of the text edit processor. Return - // the empty string which can be moved without any harm. - if (fSourceContent == null) - return ""; //$NON-NLS-1$ - return fSourceContent; - } - - /* package */ void clearContent() { - fSourceContent= null; - } - - /* non Java-doc - * @see TextEdit#postProcessCopy - */ - protected void postProcessCopy(TextEditCopier copier) { - if (fTarget != null) { - CopySourceEdit source= (CopySourceEdit)copier.getCopy(this); - CopyTargetEdit target= (CopyTargetEdit)copier.getCopy(fTarget); - if (source != null && target != null) - source.setTargetEdit(target); - } - } - - //---- consistency check ---------------------------------------------------- - - /* package */ int traverseConsistencyCheck(TextEditProcessor processor, IDocument document, List sourceEdits) { - int result= super.traverseConsistencyCheck(processor, document, sourceEdits); - // Since source computation takes place in a recursive fashion (see - // performSourceComputation) we only do something if we don't have a - // computated source already. - if (fSourceContent == null) { - if (sourceEdits.size() <= result) { - List list= new ArrayList(); - list.add(this); - for (int i= sourceEdits.size(); i < result; i++) - sourceEdits.add(null); - sourceEdits.add(list); - } else { - List list= (List)sourceEdits.get(result); - if (list == null) { - list= new ArrayList(); - sourceEdits.add(result, list); - } - list.add(this); - } - } - return result; - } - - /* package */ void performConsistencyCheck(TextEditProcessor processor, IDocument document) throws MalformedTreeException { - if (fTarget == null) - throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("CopySourceEdit.no_target")); //$NON-NLS-1$ - if (fTarget.getSourceEdit() != this) - throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("CopySourceEdit.different_source")); //$NON-NLS-1$ - } - - //---- source computation ------------------------------------------------------- - - /* package */ void traverseSourceComputation(TextEditProcessor processor, IDocument document) { - if (processor.considerEdit(this)) { - performSourceComputation(processor, document); - } - } - - /* package */ void performSourceComputation(TextEditProcessor processor, IDocument document) { - try { - MultiTextEdit root= new MultiTextEdit(getOffset(), getLength()); - root.internalSetChildren(internalGetChildren()); - fSourceContent= document.get(getOffset(), getLength()); - fSourceRoot= PartialCopier.perform(root); - fSourceRoot.moveTree(-getOffset()); - if (fSourceRoot.hasChildren()) { - EditDocument subDocument= new EditDocument(fSourceContent); - fSourceRoot.apply(subDocument, TextEdit.NONE); - if (needsTransformation()) - applyTransformation(subDocument); - fSourceContent= subDocument.get(); - fSourceRoot= null; - } else { - if (needsTransformation()) { - EditDocument subDocument= new EditDocument(fSourceContent); - applyTransformation(subDocument); - fSourceContent= subDocument.get(); - } - } - } catch (BadLocationException cannotHappen) { - Assert.isTrue(false); - } - } - - private boolean needsTransformation() { - return fModifier != null; - } - - private void applyTransformation(IDocument document) throws MalformedTreeException { - TextEdit newEdit= new MultiTextEdit(0, document.getLength()); - ReplaceEdit[] replaces= fModifier.getModifications(document.get()); - for (int i= 0; i < replaces.length; i++) { - newEdit.addChild(replaces[i]); - } - try { - newEdit.apply(document, TextEdit.NONE); - } catch (BadLocationException cannotHappen) { - Assert.isTrue(false); - } - } - - //---- document updating ---------------------------------------------------------------- - - /* package */ int performDocumentUpdating(IDocument document) throws BadLocationException { - fDelta= 0; - return fDelta; - } - - //---- region updating ---------------------------------------------------------------- - - /* non Java-doc - * @see TextEdit#deleteChildren - */ - /* package */ boolean deleteChildren() { - return false; - } -} |