synapsecns/sanguine

package origin

import (
    "bytes"
    "github.com/ethereum/go-ethereum/accounts/abi"
    "github.com/ethereum/go-ethereum/common"
    "strings"
)

func init() {
    // set topics
    var err error

    parsedOrigin, err := abi.JSON(strings.NewReader(OriginMetaData.ABI))
    if err != nil {
        panic(err)
    }

    SentTopic = parsedOrigin.Events["Sent"].ID

    if SentTopic == (common.Hash{}) {
        panic("SentTopic is nil")
    }
}

// SentTopic is the topic that gets emitted when the sent event is called.
var SentTopic common.Hash

// topicMap maps events to topics.
// this is returned as a function to assert immutability.
func topicMap() map[EventType]common.Hash {
    return map[EventType]common.Hash{
        SentEvent: SentTopic,
    }
}

// eventTypeFromTopic gets the event type from the topic
// returns nil if the topic is not found.
func eventTypeFromTopic(ogTopic common.Hash) *EventType {
    for eventType, topic := range topicMap() {
        if bytes.Equal(ogTopic.Bytes(), topic.Bytes()) {
            return &eventType
        }
    }
    return nil
}