X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/ArgumentVariable.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/ArgumentVariable.java
new file mode 100644
index 0000000..c4950c6
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/ArgumentVariable.java
@@ -0,0 +1,65 @@
+package net.sourceforge.phpdt.externaltools.internal.registry;
+
+/**********************************************************************
+Copyright (c) 2002 IBM Corp. and others. All rights reserved.
+This file is 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:
+**********************************************************************/
+
+import org.eclipse.core.runtime.IConfigurationElement;
+import net.sourceforge.phpdt.externaltools.variable.ExpandVariableContext;
+import net.sourceforge.phpdt.externaltools.variable.IVariableTextExpander;
+
+/**
+ * Represents the variable for the argument
+ */
+public final class ArgumentVariable extends ExternalToolVariable {
+	private static final DefaultTextExpander defaultExpander = new DefaultTextExpander();
+	
+	private IVariableTextExpander expander = null;
+
+	/**
+	 * Creates an argument variable
+	 * 
+	 * @param tag the variable tag
+	 * @param description a short description of what the variable will expand to
+	 * @param element the configuration element
+	 */
+	/*package*/ ArgumentVariable(String tag, String description, IConfigurationElement element) {
+		super(tag, description, element);
+	}
+
+	/**
+	 * Returns the object that can expand the variable
+	 * as text.
+	 */
+	public IVariableTextExpander getExpander() {
+		if (expander == null) {
+			try {
+				expander = (IVariableTextExpander) createObject(ExternalToolVariableRegistry.TAG_EXPANDER_CLASS);
+			} catch (ClassCastException exception) {
+			}
+			if (expander == null) {
+				expander = defaultExpander;
+			}
+		}
+		return expander;
+	}
+
+
+	/**
+	 * Default variable text expander implementation which does
+	 * not expand variables, but just returns <code>null</code>.
+	 */	
+	private static final class DefaultTextExpander implements IVariableTextExpander {
+		/* (non-Javadoc)
+		 * Method declared on IVariableTextExpander.
+		 */
+		public String getText(String varTag, String varValue, ExpandVariableContext context) {
+			return null;
+		}
+	}
+}