Repackaged grammar and (profile/archetype) matchers.

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

@@ -0,0 +1,59 @@
+package dk.itu.mario.level.grammar;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.Set;
+import java.util.TreeSet;
+
+
+public class LevelGrammar {
+	private Variable start;
+	private Map<Variable, ProductionRule> ruleMap = new HashMap<Variable, ProductionRule>();
+	private Set<Variable> variables = new TreeSet<Variable>();
+
+	public void addVariable(Variable var) {
+		if (variables.contains(var)) {
+			throw new IllegalArgumentException(
+					"Grammar already contains variable: " + var);
+		}
+		variables.add(var);
+	}
+
+	public void addProductionRule(ProductionRule rule) {
+		if (ruleMap.containsKey(rule.getLHS())) {
+			throw new IllegalArgumentException(
+					"Grammar already contains rule with LHS: " + rule.getLHS());
+		}
+		ruleMap.put(rule.getLHS(), rule);
+	}
+
+	public String generateRandom(long randomSeed) {
+		System.out.println("Generating random level parameters using seed: "
+				+ randomSeed);
+		List<Variable> startRuleRHS = getRule(getStart()).getRHS();
+		StringBuilder sb = new StringBuilder();
+		for (Variable var : startRuleRHS) {
+			sb.append(var.toString());
+		}
+		return sb.toString();
+	}
+
+	public String generateRandom() {
+		System.out.println("Creating new random seed for LevelGrammar");
+		return generateRandom(new Random().nextLong());
+	}
+
+	public ProductionRule getRule(Variable var) {
+		return ruleMap.get(var);
+	}
+
+	public Variable getStart() {
+		return start;
+	}
+
+	public void setStart(Variable start) {
+		this.start = start;
+	}
+}