refactory: added UI removed from core plugin.

[phpeclipse.git] / net.sourceforge.phpeclipse.ui / src / net / sourceforge / phpdt / internal / ui / text / JavaWordFinder.java

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/JavaWordFinder.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/JavaWordFinder.java
new file mode 100644 (file)
index 0000000..37944fb
--- /dev/null
+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/JavaWordFinder.java
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ * 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 net.sourceforge.phpdt.internal.ui.text;
+
+import net.sourceforge.phpdt.internal.compiler.parser.Scanner;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.Region;
+
+public class JavaWordFinder {
+
+       public static IRegion findWord(IDocument document, int offset) {
+
+               int start = -1;
+               int end = -1;
+
+               try {
+
+                       int pos = offset;
+                       char c = ' ';
+
+                       while (pos >= 0) {
+                               c = document.getChar(pos);
+                               if (c == '$') {
+                                       --pos;
+                                       break;
+                               }
+                               if (!Scanner.isPHPIdentifierPart(c))
+                                       break;
+
+                               --pos;
+                       }
+
+                       start = pos;
+
+                       pos = offset;
+                       int length = document.getLength();
+
+                       while (pos < length) {
+                               c = document.getChar(pos);
+                               if (!Scanner.isPHPIdentifierPart(c))
+                                       break;
+                               ++pos;
+                       }
+
+                       end = pos;
+
+               } catch (BadLocationException x) {
+               }
+
+               if (start > -1 && end > -1) {
+                       if (start == offset && end == offset)
+                               return new Region(offset, 0);
+                       else if (start == offset)
+                               return new Region(start, end - start);
+                       else
+                               return new Region(start + 1, end - start - 1);
+               }
+
+               return null;
+       }
+}