Now with file-based level grammar.

src/dk/itu/mario/level/grammar/LevelGrammar.java

@@ -3,6 +3,7 @@ package dk.itu.mario.level.grammar;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Random;
 import java.util.Set;
 import java.util.TreeSet;
@@ -67,6 +68,15 @@ public class LevelGrammar {
 		}
 		return parseNode;
 	}
+	
+	public Variable getVariable(String varName) {
+		for (Variable var : variables) {
+			if (varName.equals(var.getValue())) {
+				return var;
+			}
+		}
+		return null;
+	}
 
 	public ProductionRule getRule(Variable var) {
 		return ruleMap.get(var);
@@ -76,7 +86,37 @@ public class LevelGrammar {
 		return start;
 	}
 
+	public void setStart(String startVar) {
+		for (Variable var : variables) {
+			if (startVar.equals(var.getValue())) {
+				start = var;
+				return;
+			}
+		}
+	}
+	
 	public void setStart(Variable start) {
 		this.start = start;
 	}
+	
+	public String toString() {
+		StringBuilder sb = new StringBuilder();
+		sb.append("Variables:\n");
+		for (Variable var : variables) {
+			sb.append("VAR ");
+			sb.append(var.getValue());
+			sb.append(" = ");
+			sb.append(var.getType());
+			sb.append("\n");
+		}
+		sb.append("\n");
+		for (Entry<Variable,ProductionRule> entry : ruleMap.entrySet()) {
+			//could as easily have used LHS instead of getKey().getValue()
+			sb.append("RULE " + entry.getKey().getValue() + " -> " + entry.getValue().getRHS());
+			sb.append("\n");
+		}
+		sb.append("\n");
+		sb.append("START = " + start.getValue());
+		return sb.toString();
+	}
 }