1 files changed, 69 insertions, 0 deletions
diff --git a/org.openembedded.bc.ui/src/org/openembedded/bc/ui/editors/bitbake/VariableRule.java b/org.openembedded.bc.ui/src/org/openembedded/bc/ui/editors/bitbake/VariableRule.java
new file mode 100644
index 0000000..c615a9f
--- /dev/null
+++ b/org.openembedded.bc.ui/src/org/openembedded/bc/ui/editors/bitbake/VariableRule.java
@@ -0,0 +1,69 @@
+/*****************************************************************************
+ * Copyright (c) 2009 Ken Gilmer
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Ken Gilmer - initial API and implementation
+ *******************************************************************************/
+package org.openembedded.bc.ui.editors.bitbake;
+
+import org.eclipse.jface.text.rules.ICharacterScanner;
+import org.eclipse.jface.text.rules.IRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.Token;
+
+final class VariableRule implements IRule {
+
+	/** Token to return for this rule */
+	private final IToken fToken;
+
+	/**
+	 * Creates a new operator rule.
+	 * 
+	 * @param token
+	 *            Token to use for this rule
+	 */
+	public VariableRule(IToken token) {
+		fToken = token;
+	}
+
+	public IToken evaluate(ICharacterScanner scanner) {
+		if (scanner.getColumn() > 0) {
+			return Token.UNDEFINED;
+		}
+
+		int i = scanner.read();
+		int c = 1;
+		
+		if (!Character.isLetter(i) && i != 10) {
+			scanner.unread();
+			return Token.UNDEFINED;
+		}
+
+		int p = i;
+
+		while (i != ICharacterScanner.EOF && i != 10) {
+			p = i;
+			i = scanner.read();
+			c++;
+			
+			if (i == '=') {
+				scanner.unread();
+
+				if (p == '?' || p == '+') {
+					scanner.unread();
+				}
+				return fToken;
+			}
+		}
+
+		for (int t = 0; t < c; t++) {
+			scanner.unread();
+		}
+		
+		return Token.UNDEFINED;
+	}
+}
+\ No newline at end of file