diff options
Diffstat (limited to 'bundles/org.eclipse.compare/plugins/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/DocumentRangeNode.java')
| -rw-r--r-- | bundles/org.eclipse.compare/plugins/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/DocumentRangeNode.java | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/bundles/org.eclipse.compare/plugins/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/DocumentRangeNode.java b/bundles/org.eclipse.compare/plugins/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/DocumentRangeNode.java deleted file mode 100644 index 57073008b..000000000 --- a/bundles/org.eclipse.compare/plugins/org.eclipse.compare/compare/org/eclipse/compare/structuremergeviewer/DocumentRangeNode.java +++ /dev/null @@ -1,354 +0,0 @@ -/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved.
- */
-package org.eclipse.compare.structuremergeviewer;
-
-import java.io.ByteArrayInputStream;
-import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.Iterator;
-
-import org.eclipse.jface.text.*;
-
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.compare.*;
-import org.eclipse.compare.internal.Utilities;
-import org.eclipse.compare.contentmergeviewer.*;
-import org.eclipse.compare.contentmergeviewer.IDocumentRange;
-import org.eclipse.compare.contentmergeviewer.TextMergeViewer;
-
-
-/**
- * A document range node represents a structural element
- * when performing a structure compare of documents.
- * <code>DocumentRangeNodes</code> are created while parsing the document and represent
- * a semantic entity (e.g. a Java class or method).
- * As a consequence of the parsing a <code>DocumentRangeNode</code> maps to a range
- * of characters in the document.
- * <p>
- * Since a <code>DocumentRangeNode</code> implements the <code>IStructureComparator</code>
- * and <code>IStreamContentAccessor</code> interfaces it can be used as input to the
- * differencing engine. This makes it possible to perform
- * a structural diff on a document and have the nodes and leaves of the compare easily map
- * to character ranges within the document.
- * <p>
- * Subclasses may add additional state collected while parsing the document.
- * </p>
- * @see Differencer
- */
-public class DocumentRangeNode
- implements IDocumentRange, IStructureComparator, IEditableContent, IStreamContentAccessor {
-
- private static final boolean POS_UPDATE= true;
-
- private IDocument fBaseDocument;
- private Position fRange; // the range in the base document
- private int fTypeCode;
- private String fID;
- private Position fAppendPosition; // a position where to insert a child textually
- private ArrayList fChildren;
-
- /**
- * Creates a new <code>DocumentRangeNode</code> for the given range within the specified
- * document. The <code>typeCode</code> is uninterpreted client data. The ID is used when comparing
- * two nodes with each other: i.e. the differencing engine performs a content compare
- * on two nodes if their IDs are equal.
- *
- * @param typeCode a type code for this node
- * @param id an identifier for this node
- * @param document document on which this node is based on
- * @param start start position of range within document
- * @param length length of range
- */
- public DocumentRangeNode(int typeCode, String id, IDocument document, int start, int length) {
-
- fTypeCode= typeCode;
- fID= id;
-
- fBaseDocument= document;
- fBaseDocument.addPositionCategory(RANGE_CATEGORY);
- fRange= new Position(start, length);
-
- if (POS_UPDATE) {
- try {
- document.addPosition(RANGE_CATEGORY, fRange);
- } catch (BadPositionCategoryException ex) {
- } catch (BadLocationException ex) {
- }
- }
- }
-
- /* (non Javadoc)
- * see IDocumentRange.getDocument
- */
- public IDocument getDocument() {
- return fBaseDocument;
- }
-
- /* (non Javadoc)
- * see IDocumentRange.getRange
- */
- public Position getRange() {
- return fRange;
- }
-
- /**
- * Returns the type code of this node.
- * The type code is uninterpreted client data which can be set in the constructor.
- *
- * @return the type code of this node
- */
- public int getTypeCode() {
- return fTypeCode;
- }
-
- /**
- * Returns this node's id.
- * It is used in <code>equals</code> and <code>hashcode</code>.
- *
- * @return the node's id
- */
- public String getId() {
- return fID;
- }
-
- /**
- * Sets this node's id.
- * It is used in <code>equals</code> and <code>hashcode</code>.
- *
- * @param id the new id for this node
- */
- public void setId(String id) {
- fID= id;
- }
-
- /**
- * Adds the given node as a child.
- *
- * @param node the node to add as a child
- */
- public void addChild(DocumentRangeNode node) {
- if (fChildren == null)
- fChildren= new ArrayList();
- fChildren.add(node);
- }
-
- /* (non Javadoc)
- * see IStructureComparator.getChildren
- */
- public Object[] getChildren() {
- if (fChildren != null)
- return fChildren.toArray();
- return new Object[0];
- }
-
- /**
- * Sets the length of the range of this node.
- *
- * @param length the length of the range
- */
- public void setLength(int length) {
- getRange().setLength(length);
- }
-
- /**
- * Sets a position within the document range that can be used to (legally) insert
- * text without breaking the syntax of the document.
- * <p>
- * E.g. when parsing a Java document the "append position" of a <code>DocumentRangeNode</code>
- * representating a Java class could be the character position just before the closing bracket.
- * Inserting the text of a new method there would not disturb the syntax of the class.
- *
- * @param pos the character position within the underlying document where text can be legally inserted
- */
- public void setAppendPosition(int pos) {
- if (POS_UPDATE) {
- fBaseDocument.removePosition(fAppendPosition);
- try {
- Position p= new Position(pos);
- fBaseDocument.addPosition(RANGE_CATEGORY, p);
- fAppendPosition= p;
- } catch (BadPositionCategoryException ex) {
- } catch (BadLocationException ex) {
- // ignore
- }
- } else {
- fAppendPosition= new Position(pos);
- }
- }
-
- /**
- * Returns the position that has been set with <code>setAppendPosition</code>.
- * If <code>setAppendPosition</code> hasn't been called, the position after the last character
- * of this range is returned.
- *
- * @return a position where text can be legally inserted
- */
- public Position getAppendPosition() {
- if (fAppendPosition == null) {
- if (POS_UPDATE) {
- try {
- Position p= new Position(fBaseDocument.getLength());
- fBaseDocument.addPosition(RANGE_CATEGORY, p);
- fAppendPosition= p;
- } catch (BadPositionCategoryException ex) {
- } catch (BadLocationException ex) {
- // ignore
- }
- } else {
- fAppendPosition= new Position(fBaseDocument.getLength());
- }
- }
- return fAppendPosition;
- }
-
- /**
- * Implementation based on <code>getID</code>.
- */
- public boolean equals(Object other) {
- if (other != null && other.getClass() == getClass()) {
- DocumentRangeNode tn= (DocumentRangeNode) other;
- return fTypeCode == tn.fTypeCode && fID.equals(tn.fID);
- }
- return super.equals(other);
- }
-
- /**
- * Implementation based on <code>getID</code>.
- */
- public int hashCode() {
- return fID.hashCode();
- }
-
- /**
- * Find corresponding position
- */
- private Position findCorrespondingPosition(DocumentRangeNode otherParent, DocumentRangeNode child) {
-
- // we try to find a predecessor of left Node which exists on the right side
-
- if (child != null && fChildren != null) {
- int ix= otherParent.fChildren.indexOf(child);
- if (ix >= 0) {
-
- for (int i= ix - 1; i >= 0; i--) {
- DocumentRangeNode c1= (DocumentRangeNode) otherParent.fChildren.get(i);
- int i2= fChildren.indexOf(c1);
- if (i2 >= 0) {
- DocumentRangeNode c= (DocumentRangeNode) fChildren.get(i2);
- //System.out.println(" found corresponding: " + i2 + " " + c);
- Position p= c.fRange;
-
- //try {
- Position po= new Position(p.getOffset() + p.getLength() + 1, 0);
- //c.fBaseDocument.addPosition(RANGE_CATEGORY, po);
- return po;
- //} catch (BadLocationException ex) {
- //}
- //break;
- }
- }
-
- for (int i= ix; i < otherParent.fChildren.size(); i++) {
- DocumentRangeNode c1= (DocumentRangeNode) otherParent.fChildren.get(i);
- int i2= fChildren.indexOf(c1);
- if (i2 >= 0) {
- DocumentRangeNode c= (DocumentRangeNode) fChildren.get(i2);
- //System.out.println(" found corresponding: " + i2 + " " + c);
- Position p= c.fRange;
- //try {
- Position po= new Position(p.getOffset(), 0);
- //c.fBaseDocument.addPosition(RANGE_CATEGORY, po);
- return po;
- //} catch (BadLocationException ex) {
- //}
- //break;
- }
- }
-
- }
- }
- return getAppendPosition();
- }
-
- private void add(String s, DocumentRangeNode parent, DocumentRangeNode child) {
-
- Position p= findCorrespondingPosition(parent, child);
- if (p != null) {
- try {
- fBaseDocument.replace(p.getOffset(), p.getLength(), s);
- } catch (BadLocationException ex) {
- // ignore
- }
- }
- }
-
- /* (non Javadoc)
- * see IStreamContentAccessor.getContents
- */
- public InputStream getContents() {
- String s;
- try {
- s= fBaseDocument.get(fRange.getOffset(), fRange.getLength());
- } catch (BadLocationException ex) {
- s= ""; //$NON-NLS-1$
- }
- return new ByteArrayInputStream(s.getBytes());
- }
-
- /* (non Javadoc)
- * see IEditableContent.isEditable
- */
- public boolean isEditable() {
- return true;
- }
-
- /* (non Javadoc)
- * see IEditableContent.replace
- */
- public ITypedElement replace(ITypedElement child, ITypedElement other) {
-
- DocumentRangeNode src= null;
- String srcContents= ""; //$NON-NLS-1$
-
- if (other != null) {
- src= (DocumentRangeNode) child;
-
- if (other instanceof IStreamContentAccessor) {
- try {
- InputStream is= ((IStreamContentAccessor)other).getContents();
- byte[] bytes= Utilities.readBytes(is);
- srcContents= new String(bytes);
- } catch(CoreException ex) {
- }
- }
- }
-
- if (child != null) { // there is a destination
-
-// if (child instanceof DocumentRangeNode) {
-// DocumentRangeNode drn= (DocumentRangeNode) child;
-//
-// IDocument doc= drn.getDocument();
-// Position range= drn.getRange();
-// try {
-// doc.replace(range.getOffset(), range.getLength(), srcContents);
-// } catch (BadLocationException ex) {
-// }
-// }
- } else {
- // no destination: we have to add the contents into the parent
- add(srcContents, null /*srcParentNode*/, src);
- }
- return child;
- }
-
- /* (non Javadoc)
- * see IEditableContent.setContent
- */
- public void setContent(byte[] content) {
-// fBaseDocument.set(new String(content));
- }
-}
-
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