neoneo-go/pkg/smartcontract/param_context.go

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package smartcontract
import "github.com/CityOfZion/neo-go/pkg/util"
// ParamType represent the Type of the contract parameter
type ParamType byte
// A list of supported smart contract parameter types.
const (
SignatureType ParamType = iota
BoolType
IntegerType
Hash160Type
Hash256Type
ByteArrayType
PublicKeyType
StringType
ArrayType
)
// PropertyState represents contract properties (flags).
type PropertyState byte
// List of supported properties.
const (
NoProperties = 0
HasStorage PropertyState = 1 << iota
HasDynamicInvoke
IsPayable
)
// Parameter represents a smart contract parameter.
type Parameter struct {
// Type of the parameter
Type ParamType `json:"type"`
// The actual value of the parameter.
Value interface{} `json:"value"`
}
func (pt ParamType) String() string {
switch pt {
case SignatureType:
return "Signature"
case BoolType:
return "Boolean"
case IntegerType:
return "Integer"
case Hash160Type:
return "Hash160"
case Hash256Type:
return "Hash256"
case ByteArrayType:
return "ByteArray"
case PublicKeyType:
return "PublicKey"
case StringType:
return "String"
case ArrayType:
return "Array"
default:
return ""
}
}
// MarshalJSON implements the json.Marshaler interface.
func (pt ParamType) MarshalJSON() ([]byte, error) {
return []byte(`"` + pt.String() + `"`), nil
}
// NewParameter returns a Parameter with proper initialized Value
// of the given ParamType.
func NewParameter(t ParamType) Parameter {
return Parameter{
Type: t,
Value: nil,
}
}
// ContextItem represents a transaction context item.
type ContextItem struct {
Script util.Uint160
Parameters []Parameter
Signatures []Signature
}
// Signature represents a transaction signature.
type Signature struct {
Data []byte
PublicKey []byte
}
// ParameterContext holds the parameter context.
type ParameterContext struct{}