new operator 'groupby'

2026-05-02 14:46:28 +02:00
parent d5ced343c4
commit 3b2ef7927b
12 changed files with 271 additions and 58 deletions
@@ -45,15 +45,20 @@ func evalDot(ctx kern.ExprContext, opTerm *term) (v any, err error) {
 			err = indexTerm.tk.ErrorExpectedGot("identifier")
 		}
 	case *kern.DictType:
+		var ok bool
 		s := opTerm.children[1].symbol()
 		if s == SymVariable || s == SymString {
 			src := opTerm.children[1].Source()
 			if len(src) > 1 && src[0] == '"' && src[len(src)-1] == '"' {
 				src = src[1 : len(src)-1]
 			}
-			v, err = unboxedValue.GetItem(src)
+			if v, ok = unboxedValue.GetItem(src); !ok {
+				err = opTerm.errKeyNotFound(src)
+			}
 		} else if rightValue, err = opTerm.children[1].Compute(ctx); err == nil {
-			v, err = unboxedValue.GetItem(rightValue)
+			if v, ok = unboxedValue.GetItem(rightValue); !ok {
+				err = opTerm.errKeyNotFound(rightValue)
+			}
 		}
 	default:
 		if rightValue, err = opTerm.children[1].Compute(ctx); err == nil {