neoneo-go/pkg/smartcontract/manifest/container.go

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package manifest
// This file contains types and helper methods for wildcard containers.
// Wildcard container can contain either a finite set of elements or
// every possible element, in which case it is named `wildcard`.
import (
"bytes"
"encoding/json"
"github.com/nspcc-dev/neo-go/pkg/util"
)
// WildStrings represents string set which can be wildcard.
type WildStrings struct {
Value []string
}
// WildUint160s represents Uint160 set which can be wildcard.
type WildUint160s struct {
Value []util.Uint160
}
// Contains checks if v is in the container.
func (c *WildStrings) Contains(v string) bool {
if c.IsWildcard() {
return true
}
for _, s := range c.Value {
if v == s {
return true
}
}
return false
}
// Contains checks if v is in the container.
func (c *WildUint160s) Contains(v util.Uint160) bool {
if c.IsWildcard() {
return true
}
for _, u := range c.Value {
if u.Equals(v) {
return true
}
}
return false
}
// IsWildcard returns true iff container is wildcard.
func (c *WildStrings) IsWildcard() bool { return c.Value == nil }
// IsWildcard returns true iff container is wildcard.
func (c *WildUint160s) IsWildcard() bool { return c.Value == nil }
// Restrict transforms container into an empty one.
func (c *WildStrings) Restrict() { c.Value = []string{} }
// Restrict transforms container into an empty one.
func (c *WildUint160s) Restrict() { c.Value = []util.Uint160{} }
// Add adds v to the container.
func (c *WildStrings) Add(v string) { c.Value = append(c.Value, v) }
// Add adds v to the container.
func (c *WildUint160s) Add(v util.Uint160) { c.Value = append(c.Value, v) }
// MarshalJSON implements json.Marshaler interface.
func (c *WildStrings) MarshalJSON() ([]byte, error) {
if c.IsWildcard() {
return []byte(`"*"`), nil
}
return json.Marshal(c.Value)
}
// MarshalJSON implements json.Marshaler interface.
func (c *WildUint160s) MarshalJSON() ([]byte, error) {
if c.IsWildcard() {
return []byte(`"*"`), nil
}
return json.Marshal(c.Value)
}
// UnmarshalJSON implements json.Unmarshaler interface.
func (c *WildStrings) UnmarshalJSON(data []byte) error {
if !bytes.Equal(data, []byte(`"*"`)) {
ss := []string{}
if err := json.Unmarshal(data, &ss); err != nil {
return err
}
c.Value = ss
}
return nil
}
// UnmarshalJSON implements json.Unmarshaler interface.
func (c *WildUint160s) UnmarshalJSON(data []byte) error {
if !bytes.Equal(data, []byte(`"*"`)) {
us := []util.Uint160{}
if err := json.Unmarshal(data, &us); err != nil {
return err
}
c.Value = us
}
return nil
}