1 files changed, 73 insertions, 0 deletions
diff --git a/dice-lang/src/bjc/dicelang/ast/nodes/ILiteralDiceNode.java b/dice-lang/src/bjc/dicelang/ast/nodes/ILiteralDiceNode.java
new file mode 100644
index 0000000..b94bcc8
--- /dev/null
+++ b/dice-lang/src/bjc/dicelang/ast/nodes/ILiteralDiceNode.java
@@ -0,0 +1,73 @@
+package bjc.dicelang.ast.nodes;
+
+/**
+ * Represents a literal of some type in the AST
+ * 
+ * @author ben
+ *
+ */
+public interface ILiteralDiceNode extends IDiceASTNode {
+	/**
+	 * Check if a token represents a literal, and if so, what type
+	 * 
+	 * @param tok
+	 *            The token to check
+	 * @return The type the literal would be if it is one, or null
+	 *         otherwise
+	 */
+	static DiceLiteralType getLiteralType(String tok) {
+		String diceGroupOrNumber = "[(?:\\d*d\\d+)(?:\\d+)]";
+
+		if (tok.matches("\\A" + diceGroupOrNumber + "?" + "c"
+				+ diceGroupOrNumber + "\\Z")) {
+			return DiceLiteralType.DICE;
+		}
+
+		String diceGroup = "\\d*d\\d+\\";
+
+		if (tok.matches("\\A" + diceGroup + "Z")) {
+			return DiceLiteralType.DICE;
+		}
+
+		try {
+			Integer.parseInt(tok);
+			return DiceLiteralType.INTEGER;
+		} catch (@SuppressWarnings("unused") NumberFormatException nfex) {
+			// We don't care about details
+			return null;
+		}
+	}
+
+	/**
+	 * Check if this node can be optimized to a constant
+	 * 
+	 * @return Whether or not this node can be optimized to a constant
+	 * @see bjc.dicelang.IDiceExpression#canOptimize()
+	 */
+	boolean canOptimize();
+
+	/**
+	 * Get the type of literal this node represents
+	 * 
+	 * @return The type of literal this node represents
+	 */
+	DiceLiteralType getLiteralType();
+
+	@Override
+	default DiceASTType getType() {
+		return DiceASTType.LITERAL;
+	}
+
+	@Override
+	default boolean isOperator() {
+		return false;
+	}
+
+	/**
+	 * Optimize this node to a constant if possible
+	 * 
+	 * @return This node in constant form if possible
+	 * @see bjc.dicelang.IDiceExpression#optimize()
+	 */
+	int optimize();
+}