neo-go/pkg/interop/types.go

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package interop
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import "github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
const (
// Hash160Len is the length of proper Hash160 in bytes, use it to
// sanitize input parameters.
Hash160Len = 20
// Hash256Len is the length of proper Hash256 in bytes, use it to
// sanitize input parameters.
Hash256Len = 32
// PublicKeyCompressedLen is the length of compressed public key (which
// is the most common public key type), use it to sanitize input
// parameters.
PublicKeyCompressedLen = 33
// PublicKeyUncompressedLen is the length of uncompressed public key
// (but you're not likely to ever encounter that), use it to sanitize
// input parameters.
PublicKeyUncompressedLen = 65
// SignatureLen is the length of standard signature, use it to sanitize
// input parameters.
SignatureLen = 64
)
// Signature represents 64-byte signature.
type Signature []byte
// Hash160 represents 20-byte hash.
type Hash160 []byte
// Hash256 represents 32-byte hash.
type Hash256 []byte
// PublicKey represents marshalled ecdsa public key.
type PublicKey []byte
// Interface represents interop interface type which is needed for
// transparent handling of VM-internal types (e.g. storage.Context).
type Interface any
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// Equals compares Hash160 with the provided stackitem using EQUAL opcode.
// The provided stackitem `b` must be either one of the primitive type (int,
// bool, string, []byte) or derived from the primitive type, otherwise Equals
// will fail on .(string) conversion.
func (a Hash160) Equals(b any) bool {
ha := any(a)
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return bytesEquals(ha, b)
}
// Equals compares Hash256 with the provided stackitem using EQUAL opcode.
// The provided stackitem `b` must be either one of the primitive type (int,
// bool, string, []byte) or derived from the primitive type, otherwise Equals
// will fail on .(string) conversion.
func (a Hash256) Equals(b any) bool {
ha := any(a)
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return bytesEquals(ha, b)
}
// Equals compares PublicKey with the provided stackitem using EQUAL opcode.
// The provided stackitem `b` must be either one of the primitive type (int,
// bool, string, []byte) or derived from the primitive type, otherwise Equals
// will fail on .(string) conversion.
func (a PublicKey) Equals(b any) bool {
ha := any(a)
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return bytesEquals(ha, b)
}
// Equals compares Signature with the provided stackitem using EQUAL opcode.
// The provided stackitem `b` must be either one of the primitive types (int,
// bool, string, []byte) or derived from the primitive type, otherwise Equals
// will fail on .(string) conversion.
func (a Signature) Equals(b any) bool {
ha := any(a)
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return bytesEquals(ha, b)
}
// bytesEquals is an internal helper function allowed to compare types that can be
// converted to ByteString.
func bytesEquals(a any, b any) bool {
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return (a == nil && b == nil) ||
(a != nil && b != nil && neogointernal.Opcode2("EQUAL", a.(string), b.(string)).(bool))
}