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

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This commit is contained in:
Celestino Amoroso
2026-07-16 07:25:15 +02:00
parent 8c55f4ac4b
commit 2f616f349b
11 changed files with 105 additions and 60 deletions
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operator-insert.go
+10 -20
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@@ -33,7 +33,7 @@ func newAppendTerm(tk *scan.Token) (inst *scan.Term) {
}
}
func prependToList(opTerm *scan.Term, leftValue, rightValue any) (result any, err error) {
func prependToList(opTerm kern.Term, leftValue, rightValue any) (result any, err error) {
if a, ok := rightValue.(*array.ArrayType); ok {
var it kern.Iterator
if it, ok = leftValue.(kern.Iterator); !ok {
@@ -53,6 +53,10 @@ func prependToList(opTerm *scan.Term, leftValue, rightValue any) (result any, er
for _, item := range *a {
newArray = append(newArray, item)
}
if opTerm.GetRightChild().IsVar() {
// Update the original array if the right operand is a variable
*a = newArray
}
result = &newArray
} else if ll, ok := rightValue.(*list.LinkedList); ok {
var it kern.Iterator
@@ -78,7 +82,7 @@ func evalPrepend(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
return
}
func appendToList(opTerm *scan.Term, leftValue, rightValue any) (result any, err error) {
func appendToList(opTerm kern.Term, leftValue, rightValue any) (result any, err error) {
if a, ok := leftValue.(*array.ArrayType); ok {
var it kern.Iterator
if it, ok = rightValue.(kern.Iterator); !ok {
@@ -98,6 +102,10 @@ func appendToList(opTerm *scan.Term, leftValue, rightValue any) (result any, err
for node := ls.FirstNode(); node != nil; node = node.Next() {
newArray = append(newArray, node.Data())
}
if opTerm.GetLeftChild().IsVar() {
// Update the original array if the left operand is a variable
*a = newArray
}
result = &newArray
} else if ll, ok := leftValue.(*list.LinkedList); ok {
var it kern.Iterator
@@ -124,24 +132,6 @@ func evalAppend(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
return
}
// // func evalAssignAppend(ctx ExprContext, self *term) (v any, err error) {
// // var leftValue, rightValue any
// // if leftValue, rightValue, err = self.evalInfix(ctx); err != nil {
// // return
// // }
// // if IsArray(leftValue) {
// // list, _ := leftValue.(*ListType)
// // newList := append(*list, rightValue)
// // v = &newList
// // if
// // } else {
// // err = self.errIncompatibleTypes(leftValue, rightValue)
// // }
// // return
// // }
// init
func init() {
scan.RegisterTermConstructor(scan.SymPlusGreater, newPrependTerm)