Add getAllLabels method to ASTElement (not used currently).

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@7243 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/parser/ast/ASTElement.java

@@ -337,6 +337,18 @@ public abstract class ASTElement
 		return evaluatePartially(new EvaluateContextValues(null, varValues));
 	}
 
+	/**
+	 * Get all labels (i.e. ExpressionLabel objects), store names in set.
+	 * Special labels "deadlock", "init" *are* included in the list.
+	 */
+	public Vector<String> getAllLabels() throws PrismLangException
+	{
+		Vector<String> v = new Vector<String>();
+		GetAllLabels visitor = new GetAllLabels(v);
+		accept(visitor);
+		return v;
+	}
+
 	/**
 	 * Expand labels, return result.
 	 * Special labels "deadlock", "init" and any not in list are left.

prism/src/parser/visitor/GetAllLabels.java

@@ -0,0 +1,53 @@
+//==============================================================================
+//	
+//	Copyright (c) 2002-
+//	Authors:
+//	* Dave Parker <d.a.parker@cs.bham.ac.uk> (University of Birmingham/Oxford)
+//	
+//------------------------------------------------------------------------------
+//	
+//	This file is part of PRISM.
+//	
+//	PRISM is free software; you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation; either version 2 of the License, or
+//	(at your option) any later version.
+//	
+//	PRISM is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+//	
+//	You should have received a copy of the GNU General Public License
+//	along with PRISM; if not, write to the Free Software Foundation,
+//	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//	
+//==============================================================================
+
+package parser.visitor;
+
+import java.util.Vector;
+
+import parser.ast.*;
+import prism.PrismLangException;
+
+/**
+ * Get all variables (i.e. ExpressionVar objects), store names in set.
+ */
+public class GetAllLabels extends ASTTraverse
+{
+	private Vector<String> v;
+	
+	public GetAllLabels(Vector<String> v)
+	{
+		this.v = v;
+	}
+	
+	public void visitPost(ExpressionLabel e) throws PrismLangException
+	{
+		if (!v.contains(e.getName())) {
+			v.addElement(e.getName());
+		}
+	}
+}
+