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85 lines
3.2 KiB
Go
85 lines
3.2 KiB
Go
/*
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Package contract provides functions to work with contracts.
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*/
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package contract
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import "github.com/nspcc-dev/neo-go/pkg/interop/storage"
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// Contract represents a Neo contract and is used in interop functions. It's
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// an opaque data structure that you can manipulate with using functions from
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// this package. It's similar in function to the Contract class in the Neo .net
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// framework.
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type Contract struct{}
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// GetScript returns the script of the given contract. It uses
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// `Neo.Contract.GetScript` syscall.
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func GetScript(c Contract) []byte {
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return nil
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}
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// IsPayable returns whether the given contract is payable (able to accept
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// asset transfers to its address). It uses `Neo.Contract.IsPayable` syscall.
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func IsPayable(c Contract) bool {
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return false
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}
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// GetStorageContext returns storage context for the given contract. It only
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// works for contracts created in this transaction (so you can't take a storage
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// context for arbitrary contract). Refer to the `storage` package on how to
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// use this context. This function uses `Neo.Contract.GetStorageContext` syscall.
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func GetStorageContext(c Contract) storage.Context {
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return storage.Context{}
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}
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// Create creates a new contract using a set of input parameters:
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// script contract's bytecode (limited in length by 1M)
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// params contract's input parameter types, one byte per parameter, see
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// ParamType in the `smartcontract` package for value
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// definitions. Maximum number of parameters: 252.
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// returnType return value type, also a ParamType constant
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// properties bit field with contract's permissions (storage, dynamic
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// invoke, payable), see PropertyState in the `smartcontract`
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// package
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// name human-readable contract name (no longer than 252 bytes)
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// version human-readable contract version (no longer than 252 bytes)
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// author contract's author (no longer than 252 bytes)
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// email contract's author/support e-mail (no longer than 252 bytes)
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// description human-readable contract description (no longer than 64K bytes)
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// It returns this new created Contract when successful (and fails transaction
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// if not). It uses `Neo.Contract.Create` syscall.
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func Create(
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script []byte,
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params []byte,
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returnType byte,
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properties byte,
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name,
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version,
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author,
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email,
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description string) Contract {
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return Contract{}
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}
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// Migrate migrates calling contract (that is the one that calls Migrate) to
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// the new contract. Its parameters have exactly the same semantics as for
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// Create. The old contract will be deleted by this call, if it has any storage
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// associated it will be migrated to the new contract. New contract is returned.
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// This function uses `Neo.Contract.Migrate` syscall.
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func Migrate(
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script []byte,
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params []byte,
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returnType byte,
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properties byte,
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name,
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version,
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author,
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email,
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description string) Contract {
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return Contract{}
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}
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// Destroy deletes calling contract (the one that calls Destroy) from the
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// blockchain, so it's only possible to do that from the contract itself and
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// not by any outside code. When contract is deleted all associated storage
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// items are deleted too. This function uses `Neo.Contract.Destroy` syscall.
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func Destroy() {}
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