1 files changed, 90 insertions, 0 deletions
diff --git a/dice-lang/src/bjc/dicelang/v1/CompoundDice.java b/dice-lang/src/bjc/dicelang/v1/CompoundDice.java
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+++ b/dice-lang/src/bjc/dicelang/v1/CompoundDice.java
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+package bjc.dicelang.v1;
+
+/**
+ * Implements a "compound dice"
+ * 
+ * To explain, a compound dice is something like a d100 composed from two
+ * d10s instead of a hundred sided die.
+ * 
+ * @author ben
+ *
+ */
+public class CompoundDice implements IDiceExpression {
+	/*
+	 * The left die of the expression
+	 */
+	private IDiceExpression	left;
+
+	/*
+	 * The right die of the expression
+	 */
+	private IDiceExpression	right;
+
+	/**
+	 * Create a new compound dice using the specified dice
+	 * 
+	 * @param lft
+	 *            The die to use on the left
+	 * @param rght
+	 *            The die to use on the right
+	 */
+	public CompoundDice(IDiceExpression lft, IDiceExpression rght) {
+		this.left = lft;
+		this.right = rght;
+	}
+
+	/**
+	 * Create a new compound dice from two dice strings
+	 * 
+	 * @param lft
+	 *            The left side dice as a string
+	 * @param rght
+	 *            The right side dice as a string
+	 */
+	public CompoundDice(String lft, String rght) {
+		this(ComplexDice.fromString(lft),
+				ComplexDice.fromString(rght));
+	}
+
+	/**
+	 * Create a new compound dice from an array of dice strings
+	 * 
+	 * @param exps
+	 *            An array of two dice strings
+	 */
+	public CompoundDice(String[] exps) {
+		this(exps[0], exps[1]);
+	}
+
+	@Override
+	public boolean canOptimize() {
+		return left.canOptimize() && right.canOptimize();
+	}
+
+	@Override
+	public int optimize() {
+		if (!canOptimize()) {
+			throw new UnsupportedOperationException(
+					"Cannot optimize this compound dice. "
+							+ "Both component dice must be optimizable"
+							+ " to optimize a compound dice");
+		}
+
+		return Integer
+				.parseInt(left.optimize() + "" + right.optimize());
+	}
+
+	@Override
+	public int roll() {
+		/*
+		 * Make the combination of the two dice
+		 */
+		return Integer.parseInt(left.roll() + "" + right.roll());
+	}
+
+	@Override
+	public String toString() {
+		return "compound[l=" + left.toString() + ", r="
+				+ right.toString() + "]";
+	}
+}