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data-cursor.go: now supports the 'index' command

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This commit is contained in:
Celestino Amoroso 2024-05-04 01:24:13 +02:00
parent e6174aca82
commit d9fbe6f36d
1 changed files with 11 additions and 6 deletions
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17
data-cursor.go
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@ -15,6 +15,7 @@ const (
resetName = "reset"
nextName = "next"
currentName = "current"
indexName = "index"
)
type dataCursor struct {
@ -66,23 +67,27 @@ func (dc *dataCursor) String() string {
}
func (dc *dataCursor) HasOperation(name string) (exists bool) {
f, ok := dc.ds[name]
exists = ok && isFunctor(f)
exists = name == indexName
if !exists {
f, ok := dc.ds[name]
exists = ok && isFunctor(f)
}
return
}
func (dc *dataCursor) CallOperation(name string, args []any) (value any, err error) {
if functor, ok := dc.ds[name]; ok && isFunctor(functor) {
if name == indexName {
value = dc.Index()
} else if functor, ok := dc.ds[name]; ok && isFunctor(functor) {
if functor == dc.cleanFunc {
return dc.Clean()
value, err = dc.Clean()
} else if functor == dc.resetFunc {
return dc.Reset()
value, err = dc.Reset()
} else {
ctx := cloneContext(dc.ctx)
value, err = functor.Invoke(ctx, name, []any{})
exportObjects(dc.ctx, ctx)
}
} else {
err = errNoOperation(name)
}