implement comparison of boolean values

google · Mar 5, 2016 · c3681e9 · c3681e9
1 parent 7e2ac79
commit c3681e9
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diff --git a/lib/interpreter.dart b/lib/interpreter.dart
@@ -539,6 +539,9 @@ class InterpreterImpl extends InterpreterInterface {
       case Primitive.EQUALS:
         final arg0 = args[0];
         final arg1 = args[1];
+        if (arg0.isPrim && arg1.isPrim) {  // boolean values
+          return new ListNode.cons(boolToNode(arg0 == arg1), nodes);
+        }
         if (arg0.isNum && arg1.isNum) {
           return evalBinCmp(p, ensureNum(arg0), ensureNum(arg1), nodes, primEqualsNum);
         }

diff --git a/test/interpreter_test.dart b/test/interpreter_test.dart
@@ -221,6 +221,14 @@ class InterpreterTest {
                     new NumberNode.float(19.0)
                 ])),
               equals(Primitive.TRUE));
+        expect(
+            interpreter.evalSequence(
+                ListNode.makeList([
+                  Primitive.EQUALS,
+                  Primitive.FALSE,
+                  Primitive.FALSE
+                ])),
+            equals(Primitive.TRUE));
       });
       test("eval first butfirst", () {
         makeInterpreter();