72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
package smartcontract
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import (
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"fmt"
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"math/big"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// ParameterFromStackItem converts stackitem.Item to Parameter.
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func ParameterFromStackItem(i stackitem.Item, seen map[stackitem.Item]bool) Parameter {
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switch t := i.(type) {
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case stackitem.Null, *stackitem.Pointer:
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return NewParameter(AnyType)
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case *stackitem.BigInteger:
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return Parameter{
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Type: IntegerType,
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Value: i.Value().(*big.Int).Int64(),
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}
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case stackitem.Bool:
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return Parameter{
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Type: BoolType,
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Value: i.Value().(bool),
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}
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case *stackitem.ByteArray:
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return Parameter{
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Type: ByteArrayType,
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Value: i.Value().([]byte),
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}
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case *stackitem.Interop:
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return Parameter{
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Type: InteropInterfaceType,
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Value: nil,
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}
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case *stackitem.Buffer:
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return Parameter{
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Type: ByteArrayType,
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Value: i.Value().([]byte),
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}
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case *stackitem.Struct, *stackitem.Array:
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var value []Parameter
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if !seen[i] {
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seen[i] = true
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for _, stackItem := range i.Value().([]stackitem.Item) {
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parameter := ParameterFromStackItem(stackItem, seen)
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value = append(value, parameter)
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}
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}
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return Parameter{
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Type: ArrayType,
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Value: value,
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}
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case *stackitem.Map:
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value := make([]ParameterPair, 0)
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if !seen[i] {
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seen[i] = true
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for _, element := range i.Value().([]stackitem.MapElement) {
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value = append(value, ParameterPair{
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Key: ParameterFromStackItem(element.Key, seen),
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Value: ParameterFromStackItem(element.Value, seen),
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})
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}
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}
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return Parameter{
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Type: MapType,
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Value: value,
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}
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default:
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panic(fmt.Sprintf("unknown stack item type: %v", t))
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}
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}
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