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Iterator: added support for iterators over dictionaries

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This commit is contained in:
Celestino Amoroso
2026-04-19 15:08:14 +02:00
parent d7dd628fc9
commit 807df0f3a8
7 changed files with 280 additions and 26 deletions
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operand-iterator.go
+32 -20
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@@ -86,37 +86,49 @@ func evalIterator(ctx ExprContext, opTerm *term) (v any, err error) {
return
}
if ds, err = getDataSourceDict(opTerm, firstChildValue); err != nil {
if ds, err = getDataSourceDict(opTerm, firstChildValue); err != nil && ds == nil {
return
}
err = nil
if ds != nil {
var dc *dataCursor
dcCtx := ctx.Clone()
if initFunc, exists := ds[InitName]; exists && initFunc != nil {
var args []any
var resource any
if len(opTerm.children) > 1 {
if args, err = evalTermArray(ctx, opTerm.children[1:]); err != nil {
if len(ds) > 0 {
var dc *dataCursor
dcCtx := ctx.Clone()
if initFunc, exists := ds[InitName]; exists && initFunc != nil {
var args []any
var resource any
if len(opTerm.children) > 1 {
if args, err = evalTermArray(ctx, opTerm.children[1:]); err != nil {
return
}
} else {
args = []any{}
}
actualParams := bindActualParams(initFunc, args)
initCtx := ctx.Clone()
if resource, err = initFunc.InvokeNamed(initCtx, InitName, actualParams); err != nil {
return
}
exportObjects(dcCtx, initCtx)
dc = NewDataCursor(dcCtx, ds, resource)
} else {
args = []any{}
dc = NewDataCursor(dcCtx, ds, nil)
}
actualParams := bindActualParams(initFunc, args)
initCtx := ctx.Clone()
if resource, err = initFunc.InvokeNamed(initCtx, InitName, actualParams); err != nil {
return
}
exportObjects(dcCtx, initCtx)
dc = NewDataCursor(dcCtx, ds, resource)
v = dc
} else {
dc = NewDataCursor(dcCtx, ds, nil)
if dictIt, ok := firstChildValue.(*DictType); ok {
var args []any
if args, err = evalSibling(ctx, opTerm.children, nil); err == nil {
v, err = NewDictIterator(dictIt, args)
}
} else {
err = opTerm.children[0].Errorf("the data-source must be a dictionary")
}
}
v = dc
} else if list, ok := firstChildValue.(*ListType); ok {
var args []any
if args, err = evalSibling(ctx, opTerm.children, nil); err == nil {