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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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operator-filter.go
+10 -8
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@@ -7,6 +7,8 @@ package expr
import (
"fmt"
"io"
"git.portale-stac.it/go-pkg/expr/kern"
)
//-------- map term
@@ -21,32 +23,32 @@ func newFilterTerm(tk *Token) (inst *term) {
}
}
func evalFilter(ctx ExprContext, opTerm *term) (v any, err error) {
func evalFilter(ctx kern.ExprContext, opTerm *term) (v any, err error) {
var leftValue, rightValue any
var it Iterator
var it kern.Iterator
var item any
if err = opTerm.checkOperands(); err != nil {
return
}
if leftValue, err = opTerm.children[0].compute(ctx); err != nil {
if leftValue, err = opTerm.children[0].Compute(ctx); err != nil {
return
}
if it, err = NewIterator(leftValue); err != nil {
return nil, fmt.Errorf("left operand of FILTER must be an iterable data-source; got %s", TypeName(leftValue))
return nil, fmt.Errorf("left operand of FILTER must be an iterable data-source; got %s", kern.TypeName(leftValue))
}
values := newListA()
values := kern.NewListA()
for item, err = it.Next(); err == nil; item, err = it.Next() {
ctx.SetVar("_", item)
ctx.SetVar("_index", it.Index())
ctx.SetVar("_count", it.Count())
if rightValue, err = opTerm.children[1].compute(ctx); err == nil {
if success, valid := ToBool(rightValue); valid {
if rightValue, err = opTerm.children[1].Compute(ctx); err == nil {
if success, valid := kern.ToBool(rightValue); valid {
if success {
values.appendItem(item)
values.AppendItem(item)
}
} else {
err = fmt.Errorf("filter expression must return a boolean or a castable to boolean, got %v [%T]", rightValue, rightValue)