Rudimentary CLI for new die implementation

1 files changed, 43 insertions, 0 deletions

diff --git a/dice/src/example/java/bjc/dicelang/neodice/commands/RollCommand.java b/dice/src/example/java/bjc/dicelang/neodice/commands/RollCommand.java
new file mode 100644
index 0000000..eb7b597
--- /dev/null
+++ b/dice/src/example/java/bjc/dicelang/neodice/commands/RollCommand.java
@@ -0,0 +1,43 @@
+package bjc.dicelang.neodice.commands;
+
+import static bjc.dicelang.neodice.statements.StatementValue.Type.*;
+
+import java.util.*;
+
+import bjc.dicelang.neodice.*;
+import bjc.dicelang.neodice.statements.*;
+
+public class RollCommand implements Command {
+	@Override
+	public StatementValue execute(Iterator<String> words, DieBoxCLI state) {
+		if (!words.hasNext()) {
+			throw new DieBoxException("Roll must be provided an argument to roll");
+		} else {
+			StatementValue toRoll = state.runStatement(words);
+			
+			if (toRoll.type == DIE) {
+				DieStatementValue die = (DieStatementValue) toRoll;
+				
+				return new IntegerStatementValue(die.value.roll(state.rng));
+			} else if (toRoll.type == DIEPOOL) {
+				DiePoolStatementValue pool = (DiePoolStatementValue) toRoll;
+				
+				return new IntArrayStatementValue(pool.value.roll(state.rng));
+			} else {
+				throw new DieBoxException("Roll was provided something that wasn't rollable (only DIE and DIEPOOL objects are rollable) (was %s, of type %s)",
+						toRoll, toRoll.type);
+			}
+		}
+	}
+	
+	@Override
+	public String shortHelp() {
+		return "rolls a die-like object";
+	}
+	
+	@Override
+	public String longHelp() {
+		return "Rolls a die-like object, and yields the result of rolling it."
+				+ " What is returned can differ based on what is rolled";
+	}
+}
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