at operator return -1 when fails in lists and arrays; insert operators (<< and >>) changes che container if it is a variable

2026-07-16 07:25:15 +02:00
parent 8c55f4ac4b
commit 2f616f349b
11 changed files with 105 additions and 60 deletions
@@ -186,10 +186,32 @@ func (t *Term) GetChildSource(index int) (s string) {
 	return
 }

+func (t *Term) GetLeftChild() (c kern.Term) {
+	if t.Position == PosInfix && len(t.Children) > 0 {
+		c = t.Children[0]
+	}
+	return
+}
+
+func (t *Term) GetRightChild() (c kern.Term) {
+	if t.Position == PosInfix && len(t.Children) > 1 {
+		c = t.Children[1]
+	}
+	return
+}
+
 func (t *Term) IsAssign() bool {
 	return t.Symbol() == SymEqual
 }

+func (t *Term) IsVar() bool {
+	return t.Symbol() == SymVariable
+}
+
+// func (t *Term) IsFunc() bool {
+// 	return t.Symbol() == SymFunction
+// }
+
 func (t *Term) Compute(ctx kern.ExprContext) (v any, err error) {
 	if t.EvalFunc == nil {
 		err = t.Errorf("undefined eval-func for %q term", t.Source())