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mirror of https://github.com/MontFerret/ferret.git synced 2025-01-24 03:49:29 +02:00
ferret/pkg/stdlib/arrays/append.go
Tim Voronov 24d8eedd4c
Feature/doc markup (#543)
* Added release notes

* #509 fixedOCOD typo

* Updated values

* Updated comments

* Changed stdlib docs format

* Changed format of array in docs

* Use 'any' instead of 'value' in docs

* New format for optional params

* Updated docs for testing package

* Added namespace information
2020-08-07 21:49:29 -04:00

75 lines
1.4 KiB
Go

package arrays
import (
"context"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
// APPEND appends a new item to an array and returns a new array with a given element.
// If ``uniqueOnly`` is set to true, then will add the item only if it's unique.
// @param {Any[]} arr - Target array.
// @param {Any} item - Target value to add.
// @return {Any[]} - New array.
func Append(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 2, 3)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[0], types.Array)
if err != nil {
return values.None, err
}
arr := args[0].(*values.Array)
arg := args[1]
unique := values.False
if len(args) > 2 {
err = core.ValidateType(args[2], types.Boolean)
if err != nil {
return values.None, err
}
unique = args[2].(values.Boolean)
}
next := values.NewArray(int(arr.Length()) + 1)
if !unique {
arr.ForEach(func(item core.Value, idx int) bool {
next.Push(item)
return true
})
next.Push(arg)
return next, nil
}
hasDuplicate := false
arr.ForEach(func(item core.Value, idx int) bool {
next.Push(item)
if !hasDuplicate {
hasDuplicate = item.Compare(arg) == 0
}
return true
})
if !hasDuplicate {
next.Push(arg)
}
return next, nil
}