Strings

2 files changed, 17 insertions, 0 deletions

diff --git a/evaluator/evaluator.go b/evaluator/evaluator.go
index 87bfc48..9129a98 100644
--- a/evaluator/evaluator.go
+++ b/evaluator/evaluator.go
@@ -83,6 +83,9 @@ func Eval(node ast.Node, env *object.Environment) object.Object {
 
 		return &object.Function{Parameters: params, Body: body, Env: env}
 
+	case *ast.StringLiteral:
+		return &object.String{Value: node.Value}
+
 	case *ast.ReturnStatement:
 		val := Eval(node.ReturnValue, env)
 		if isError(val) {
diff --git a/evaluator/evaluator_test.go b/evaluator/evaluator_test.go
index 75480dc..cf9e320 100644
--- a/evaluator/evaluator_test.go
+++ b/evaluator/evaluator_test.go
@@ -313,3 +313,17 @@ func testNullObject(t *testing.T, obj object.Object) bool {
 	}
 	return true
 }
+
+func TestStringLiteral(t *testing.T) {
+	input := `"Hello World!"`
+
+	evaluated := testEval(input)
+	str, ok := evaluated.(*object.String)
+	if !ok {
+		t.Fatalf("object is not String. got=%T (%+v)", evaluated, evaluated)
+	}
+
+	if str.Value != "Hello World!" {
+		t.Errorf("String has wrong value. got=%q", str.Value)
+	}
+}