+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 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 net.sourceforge.phpdt.internal.ui.text;
-
-import java.text.BreakIterator;
-import java.text.CharacterIterator;
-
-//incastrix
-//import org.eclipse.jface.text.Assert;
-import org.eclipse.core.runtime.Assert;
-
-/**
- * Breaks java text into word starts, also stops at line start and end. No
- * direction dependency.
- *
- * @since 3.0
- */
-public class JavaWordIterator extends BreakIterator {
-
- /**
- * The underlying java break iterator. It returns all breaks, including
- * before and after every whitespace.
- */
- private JavaBreakIterator fIterator;
-
- /** The current index for the stateful operations. */
- private int fIndex;
-
- /**
- * Creates a new word iterator.
- */
- public JavaWordIterator() {
- fIterator = new JavaBreakIterator();
- first();
- }
-
- /*
- * @see java.text.BreakIterator#first()
- */
- public int first() {
- fIndex = fIterator.first();
- return fIndex;
- }
-
- /*
- * @see java.text.BreakIterator#last()
- */
- public int last() {
- fIndex = fIterator.last();
- return fIndex;
- }
-
- /*
- * @see java.text.BreakIterator#next(int)
- */
- public int next(int n) {
- int next = 0;
- while (--n > 0 && next != DONE) {
- next = next();
- }
- return next;
- }
-
- /*
- * @see java.text.BreakIterator#next()
- */
- public int next() {
- fIndex = following(fIndex);
- return fIndex;
- }
-
- /*
- * @see java.text.BreakIterator#previous()
- */
- public int previous() {
- fIndex = preceding(fIndex);
- return fIndex;
- }
-
- /*
- * @see java.text.BreakIterator#preceding(int)
- */
- public int preceding(int offset) {
- int first = fIterator.preceding(offset);
- if (isWhitespace(first, offset)) {
- int second = fIterator.preceding(first);
- if (second != DONE && !isDelimiter(second, first))
- return second;
- }
- return first;
- }
-
- /*
- * @see java.text.BreakIterator#following(int)
- */
- public int following(int offset) {
- int first = fIterator.following(offset);
- if (eatFollowingWhitespace(offset, first)) {
- int second = fIterator.following(first);
- if (isWhitespace(first, second))
- return second;
- }
- return first;
- }
-
- private boolean eatFollowingWhitespace(int offset, int exclusiveEnd) {
- if (exclusiveEnd == DONE || offset == DONE)
- return false;
-
- if (isWhitespace(offset, exclusiveEnd))
- return false;
- if (isDelimiter(offset, exclusiveEnd))
- return false;
-
- return true;
- }
-
- /**
- * Returns <code>true</code> if the given sequence into the underlying
- * text represents a delimiter, <code>false</code> otherwise.
- *
- * @param offset
- * the offset
- * @param exclusiveEnd
- * the end offset
- * @return <code>true</code> if the given range is a delimiter
- */
- private boolean isDelimiter(int offset, int exclusiveEnd) {
- if (exclusiveEnd == DONE || offset == DONE)
- return false;
-
- Assert.isTrue(offset >= 0);
- Assert.isTrue(exclusiveEnd <= getText().getEndIndex());
- Assert.isTrue(exclusiveEnd > offset);
-
- CharSequence seq = fIterator.fText;
-
- while (offset < exclusiveEnd) {
- char ch = seq.charAt(offset);
- if (ch != '\n' && ch != '\r')
- return false;
- offset++;
- }
-
- return true;
- }
-
- /**
- * Returns <code>true</code> if the given sequence into the underlying
- * text represents whitespace, but not a delimiter, <code>false</code>
- * otherwise.
- *
- * @param offset
- * the offset
- * @param exclusiveEnd
- * the end offset
- * @return <code>true</code> if the given range is whitespace
- */
- private boolean isWhitespace(int offset, int exclusiveEnd) {
- if (exclusiveEnd == DONE || offset == DONE)
- return false;
-
- Assert.isTrue(offset >= 0);
- Assert.isTrue(exclusiveEnd <= getText().getEndIndex());
- Assert.isTrue(exclusiveEnd > offset);
-
- CharSequence seq = fIterator.fText;
-
- while (offset < exclusiveEnd) {
- char ch = seq.charAt(offset);
- if (!Character.isWhitespace(ch))
- return false;
- if (ch == '\n' || ch == '\r')
- return false;
- offset++;
- }
-
- return true;
- }
-
- /*
- * @see java.text.BreakIterator#current()
- */
- public int current() {
- return fIndex;
- }
-
- /*
- * @see java.text.BreakIterator#getText()
- */
- public CharacterIterator getText() {
- return fIterator.getText();
- }
-
- /**
- * Sets the text as <code>CharSequence</code>.
- *
- * @param newText
- * the new text
- */
- public void setText(CharSequence newText) {
- fIterator.setText(newText);
- first();
- }
-
- /*
- * @see java.text.BreakIterator#setText(java.text.CharacterIterator)
- */
- public void setText(CharacterIterator newText) {
- fIterator.setText(newText);
- first();
- }
-
- /*
- * @see java.text.BreakIterator#setText(java.lang.String)
- */
- public void setText(String newText) {
- setText((CharSequence) newText);
- }
-
-}
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