60 lines
2.8 KiB
Go
60 lines
2.8 KiB
Go
// Package nonnepxxcontractwithiterators contains RPC wrappers for Non-NEPXX contract with iterators contract.
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package nonnepxxcontractwithiterators
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import (
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"github.com/google/uuid"
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"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// Hash contains contract hash.
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var Hash = util.Uint160{0x33, 0x22, 0x11, 0x0, 0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x0}
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// Invoker is used by ContractReader to call various safe methods.
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type Invoker interface {
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Call(contract util.Uint160, operation string, params ...interface{}) (*result.Invoke, error)
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CallAndExpandIterator(contract util.Uint160, method string, maxItems int, params ...interface{}) (*result.Invoke, error)
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TerminateSession(sessionID uuid.UUID) error
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TraverseIterator(sessionID uuid.UUID, iterator *result.Iterator, num int) ([]stackitem.Item, error)
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}
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// ContractReader implements safe contract methods.
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type ContractReader struct {
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invoker Invoker
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}
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// NewReader creates an instance of ContractReader using Hash and the given Invoker.
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func NewReader(invoker Invoker) *ContractReader {
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return &ContractReader{invoker}
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}
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// Tokens invokes `tokens` method of contract.
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func (c *ContractReader) Tokens() (uuid.UUID, result.Iterator, error) {
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return unwrap.SessionIterator(c.invoker.Call(Hash, "tokens"))
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}
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// TokensExpanded is similar to Tokens (uses the same contract
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// method), but can be useful if the server used doesn't support sessions and
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// doesn't expand iterators. It creates a script that will get the specified
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// number of result items from the iterator right in the VM and return them to
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// you. It's only limited by VM stack and GAS available for RPC invocations.
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func (c *ContractReader) TokensExpanded(_numOfIteratorItems int) ([]stackitem.Item, error) {
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return unwrap.Array(c.invoker.CallAndExpandIterator(Hash, "tokens", _numOfIteratorItems))
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}
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// GetAllRecords invokes `getAllRecords` method of contract.
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func (c *ContractReader) GetAllRecords(name string) (uuid.UUID, result.Iterator, error) {
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return unwrap.SessionIterator(c.invoker.Call(Hash, "getAllRecords", name))
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}
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// GetAllRecordsExpanded is similar to GetAllRecords (uses the same contract
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// method), but can be useful if the server used doesn't support sessions and
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// doesn't expand iterators. It creates a script that will get the specified
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// number of result items from the iterator right in the VM and return them to
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// you. It's only limited by VM stack and GAS available for RPC invocations.
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func (c *ContractReader) GetAllRecordsExpanded(name string, _numOfIteratorItems int) ([]stackitem.Item, error) {
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return unwrap.Array(c.invoker.CallAndExpandIterator(Hash, "getAllRecords", _numOfIteratorItems, name))
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}
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