mirror of
https://github.com/MontFerret/ferret.git
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65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package objects
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import (
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"context"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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"github.com/MontFerret/ferret/pkg/runtime/values/types"
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)
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// KeepKeys returns a new object with only given keys.
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// @params src (Object) - source object.
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// @params keys (Array Of String OR Strings) - keys that need to be keeped.
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// @returns (Object) - New Object with only given keys.
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func KeepKeys(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 2, core.MaxArgs)
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if err != nil {
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return values.None, err
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}
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err = core.ValidateType(args[0], types.Object)
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if err != nil {
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return values.None, err
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}
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keys := values.NewArrayWith(args[1:]...)
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if len(args) == 2 && args[1].Type().Equals(types.Array) {
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keys = args[1].(*values.Array)
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}
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err = validateArrayOf(types.String, keys)
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if err != nil {
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return values.None, err
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}
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obj := args[0].(*values.Object)
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resultObj := values.NewObject()
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var key values.String
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var val core.Value
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var exists values.Boolean
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keys.ForEach(func(keyVal core.Value, idx int) bool {
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key = keyVal.(values.String)
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if val, exists = obj.Get(key); exists {
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cloneable, ok := val.(core.Cloneable)
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if ok {
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val = cloneable.Clone()
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}
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resultObj.Set(key, val)
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}
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return true
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})
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return resultObj, nil
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}
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