/
parser.go
93 lines (77 loc) · 2.88 KB
/
parser.go
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package bondingmanager
import (
"fmt"
"github.com/ethereum/go-ethereum/common"
ethTypes "github.com/ethereum/go-ethereum/core/types"
)
// Parser parses events from the light inbox contract.
type Parser interface {
// EventType determines if an event was initiated by the bridge or the user.
EventType(log ethTypes.Log) (_ EventType, ok bool)
// ParseStatusUpdated parses a StatusUpdated event
ParseStatusUpdated(log ethTypes.Log) (_ *BondingManagerStatusUpdated, err error)
// ParseDisputeOpened parses a DisputeOpened event
ParseDisputeOpened(log ethTypes.Log) (_ *BondingManagerDisputeOpened, err error)
// ParseRootUpdated parses a RootUpdated event
ParseRootUpdated(log ethTypes.Log) (_ *[32]byte, err error)
}
type parserImpl struct {
// filterer is the parser filterer we use to parse events
filterer *BondingManagerFilterer
}
// NewParser creates a new parser for the bonding manager contract.
func NewParser(bondingManagerAddress common.Address) (Parser, error) {
parser, err := NewBondingManagerFilterer(bondingManagerAddress, nil)
if err != nil {
return nil, fmt.Errorf("could not create %T: %w", BondingManagerFilterer{}, err)
}
return &parserImpl{filterer: parser}, nil
}
func (p parserImpl) ParseStatusUpdated(log ethTypes.Log) (_ *BondingManagerStatusUpdated, err error) {
bondingManagerStatusUpdated, err := p.filterer.ParseStatusUpdated(log)
if err != nil {
return nil, fmt.Errorf("could not parse status updated: %w", err)
}
return bondingManagerStatusUpdated, nil
}
func (p parserImpl) ParseDisputeOpened(log ethTypes.Log) (_ *BondingManagerDisputeOpened, err error) {
bondingManagerDisputeOpened, err := p.filterer.ParseDisputeOpened(log)
if err != nil {
return nil, fmt.Errorf("could not parse status updated: %w", err)
}
return bondingManagerDisputeOpened, nil
}
func (p parserImpl) ParseRootUpdated(log ethTypes.Log) (_ *[32]byte, err error) {
bondingManagerRootUpdated, err := p.filterer.ParseRootUpdated(log)
if err != nil {
return nil, fmt.Errorf("could not parse status updated: %w", err)
}
return &bondingManagerRootUpdated.NewRoot, nil
}
func (p parserImpl) EventType(log ethTypes.Log) (_ EventType, ok bool) {
for _, logTopic := range log.Topics {
eventType := eventTypeFromTopic(logTopic)
if eventType == nil {
continue
}
return *eventType, true
}
// return an unknown event to avoid cases where user failed to check the event type
return EventType(len(topicMap()) + 2), false
}
// EventType is the type of the bonding manager event
//
//go:generate go run golang.org/x/tools/cmd/stringer -type=EventType
type EventType uint
const (
// StatusUpdatedEvent is an StatusUpdated event.
StatusUpdatedEvent EventType = iota
// DisputeOpenedEvent is an DisputeOpened event.
DisputeOpenedEvent
// RootUpdatedEvent is an RootUpdated event.
RootUpdatedEvent
)
// Int gets the int for an event type.
func (i EventType) Int() uint8 {
return uint8(i)
}