moved a subset of source file to the kern package

dict-iterator.go

@@ -9,6 +9,8 @@ import (
 	"io"
 	"slices"
 	"strings"
+
+	"git.portale-stac.it/go-pkg/expr/kern"
 )
 
 type dictIterMode int
@@ -20,7 +22,7 @@ const (
 )
 
 type DictIterator struct {
-	a        *DictType
+	a        *kern.DictType
 	count    int
 	index    int
 	keys     []any
@@ -65,7 +67,7 @@ func (it *DictIterator) makeKeys(m map[any]any, sort sortType) {
 	}
 }
 
-func NewDictIterator(dict *DictType, args []any) (it *DictIterator, err error) {
+func NewDictIterator(dict *kern.DictType, args []any) (it *DictIterator, err error) {
 	var sortType = sortTypeNone
 	var s string
 	var argAny any
@@ -76,7 +78,7 @@ func NewDictIterator(dict *DictType, args []any) (it *DictIterator, err error) {
 	} else {
 		argAny = "default"
 	}
-	if s, err = ToGoString(argAny, "sort type"); err == nil {
+	if s, err = kern.ToGoString(argAny, "sort type"); err == nil {
 		switch strings.ToLower(s) {
 		case "a", "asc":
 			sortType = sortTypeAsc
@@ -97,7 +99,7 @@ func NewDictIterator(dict *DictType, args []any) (it *DictIterator, err error) {
 				argAny = "default"
 			}
 
-			if s, err = ToGoString(argAny, "iteration mode"); err == nil {
+			if s, err = kern.ToGoString(argAny, "iteration mode"); err == nil {
 				switch strings.ToLower(s) {
 				case "k", "key", "keys":
 					dictIt.iterMode = dictIterModeKeys
@@ -119,7 +121,7 @@ func NewDictIterator(dict *DictType, args []any) (it *DictIterator, err error) {
 }
 
 func NewMapIterator(m map[any]any) (it *DictIterator) {
-	it = &DictIterator{a: (*DictType)(&m), count: 0, index: -1, keys: nil}
+	it = &DictIterator{a: (*kern.DictType)(&m), count: 0, index: -1, keys: nil}
 	it.makeKeys(m, sortTypeNone)
 	return
 }
@@ -138,31 +140,31 @@ func (it *DictIterator) TypeName() string {
 
 func (it *DictIterator) HasOperation(name string) bool {
 	// yes := name == NextName || name == ResetName || name == IndexName || name == CountName || name == CurrentName
-	yes := slices.Contains([]string{NextName, ResetName, IndexName, CountName, CurrentName, CleanName, KeyName, ValueName}, name)
+	yes := slices.Contains([]string{kern.NextName, kern.ResetName, kern.IndexName, kern.CountName, kern.CurrentName, kern.CleanName, kern.KeyName, kern.ValueName}, name)
 	return yes
 }
 
 func (it *DictIterator) CallOperation(name string, args map[string]any) (v any, err error) {
 	switch name {
-	case NextName:
+	case kern.NextName:
 		v, err = it.Next()
-	case ResetName:
+	case kern.ResetName:
 		err = it.Reset()
-	case CleanName:
+	case kern.CleanName:
 		err = it.Clean()
-	case IndexName:
+	case kern.IndexName:
 		v = int64(it.Index())
-	case CurrentName:
+	case kern.CurrentName:
 		v, err = it.Current()
-	case CountName:
+	case kern.CountName:
 		v = it.count
-	case KeyName:
+	case kern.KeyName:
 		if it.index >= 0 && it.index < len(it.keys) {
 			v = it.keys[it.index]
 		} else {
 			err = io.EOF
 		}
-	case ValueName:
+	case kern.ValueName:
 		if it.index >= 0 && it.index < len(it.keys) {
 			a := *(it.a)
 			v = a[it.keys[it.index]]
@@ -170,7 +172,7 @@ func (it *DictIterator) CallOperation(name string, args map[string]any) (v any,
 			err = io.EOF
 		}
 	default:
-		err = errNoOperation(name)
+		err = kern.ErrNoOperation(name)
 	}
 	return
 }
@@ -186,7 +188,7 @@ func (it *DictIterator) Current() (item any, err error) {
 		case dictIterModeItems:
 			a := *(it.a)
 			pair := []any{it.keys[it.index], a[it.keys[it.index]]}
-			item = newList(pair)
+			item = kern.NewList(pair)
 		}
 	} else {
 		err = io.EOF