go-pkg/expr
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moved a subset of source file to the kern package

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This commit is contained in:
Celestino Amoroso
2026-04-27 19:43:37 +02:00
parent f100adead3
commit 4d910dd069
107 changed files with 2080 additions and 1380 deletions
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operand-iterator.go
+21 -19
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@@ -7,6 +7,8 @@ package expr
import (
"slices"
"strings"
"git.portale-stac.it/go-pkg/expr/kern"
)
// -------- iterator term
@@ -25,11 +27,11 @@ func newIteratorTerm(tk *Token, args []*term) *term {
// -------- eval iterator
func evalTermArray(ctx ExprContext, terms []*term) (values []any, err error) {
func evalTermArray(ctx kern.ExprContext, terms []*term) (values []any, err error) {
values = make([]any, len(terms))
for i, t := range terms {
var value any
if value, err = t.compute(ctx); err == nil {
if value, err = t.Compute(ctx); err == nil {
values[i] = value
} else {
break
@@ -38,25 +40,25 @@ func evalTermArray(ctx ExprContext, terms []*term) (values []any, err error) {
return
}
func evalFirstChild(ctx ExprContext, iteratorTerm *term) (value any, err error) {
func evalFirstChild(ctx kern.ExprContext, iteratorTerm *term) (value any, err error) {
if len(iteratorTerm.children) < 1 || iteratorTerm.children[0] == nil {
err = iteratorTerm.Errorf("missing the data-source parameter")
return
}
value, err = iteratorTerm.children[0].compute(ctx)
value, err = iteratorTerm.children[0].Compute(ctx)
return
}
func getDataSourceDict(iteratorTerm *term, firstChildValue any) (ds map[string]Functor, err error) {
if dictAny, ok := firstChildValue.(*DictType); ok {
requiredFields := []string{NextName}
func getDataSourceDict(iteratorTerm *term, firstChildValue any) (ds map[string]kern.Functor, err error) {
if dictAny, ok := firstChildValue.(*kern.DictType); ok {
requiredFields := []string{kern.NextName}
fieldsMask := 0b1
foundFields := 0
ds = make(map[string]Functor)
ds = make(map[string]kern.Functor)
for keyAny, item := range *dictAny {
if key, ok := keyAny.(string); ok {
if functor, ok := item.(Functor); ok {
if functor, ok := item.(kern.Functor); ok {
ds[key] = functor
if index := slices.Index(requiredFields, key); index >= 0 {
foundFields |= 1 << index
@@ -78,9 +80,9 @@ func getDataSourceDict(iteratorTerm *term, firstChildValue any) (ds map[string]F
return
}
func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
func evalIterator(ctx kern.ExprContext, opTerm *term) (v any, err error) {
var firstChildValue any
var ds map[string]Functor
var ds map[string]kern.Functor
if firstChildValue, err = evalFirstChild(ctx, opTerm); err != nil {
return
@@ -95,7 +97,7 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
if len(ds) > 0 {
var dc *dataCursor
dcCtx := ctx.Clone()
if initFunc, exists := ds[InitName]; exists && initFunc != nil {
if initFunc, exists := ds[kern.InitName]; exists && initFunc != nil {
var args []any
var resource any
if len(opTerm.children) > 1 {
@@ -106,13 +108,13 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
args = []any{}
}
actualParams := bindActualParams(initFunc, args)
actualParams := kern.BindActualParams(initFunc, args)
initCtx := ctx.Clone()
if resource, err = initFunc.InvokeNamed(initCtx, InitName, actualParams); err != nil {
if resource, err = initFunc.InvokeNamed(initCtx, kern.InitName, actualParams); err != nil {
return
}
exportObjects(dcCtx, initCtx)
kern.ExportObjects(dcCtx, initCtx)
dc = NewDataCursor(dcCtx, ds, resource)
} else {
dc = NewDataCursor(dcCtx, ds, nil)
@@ -120,7 +122,7 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
v = dc
} else {
if dictIt, ok := firstChildValue.(*DictType); ok {
if dictIt, ok := firstChildValue.(*kern.DictType); ok {
var args []any
if args, err = evalSibling(ctx, opTerm.children, nil); err == nil {
v, err = NewDictIterator(dictIt, args)
@@ -129,7 +131,7 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
err = opTerm.children[0].Errorf("the data-source must be a dictionary")
}
}
} else if list, ok := firstChildValue.(*ListType); ok {
} else if list, ok := firstChildValue.(*kern.ListType); ok {
var args []any
if args, err = evalSibling(ctx, opTerm.children, nil); err == nil {
v = NewListIterator(list, args)
@@ -143,7 +145,7 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
return
}
func evalSibling(ctx ExprContext, terms []*term, firstChildValue any) (list []any, err error) {
func evalSibling(ctx kern.ExprContext, terms []*term, firstChildValue any) (list []any, err error) {
items := make([]any, 0, len(terms))
for i, tree := range terms {
var param any
@@ -152,7 +154,7 @@ func evalSibling(ctx ExprContext, terms []*term, firstChildValue any) (list []an
continue
}
param = firstChildValue
} else if param, err = tree.compute(ctx); err != nil {
} else if param, err = tree.Compute(ctx); err != nil {
break
}
items = append(items, param)