bddf8f76c8
Implementation of basic event parsing and its input types. This separates methods and events and fixes an issue with go type parsing and validation.
45 lines
1.5 KiB
Go
45 lines
1.5 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package abi
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import (
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"fmt"
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"strings"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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)
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// Event is an event potentially triggered by the EVM's LOG mechanism. The Event
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// holds type information (inputs) about the yielded output
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type Event struct {
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Name string
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Inputs []Argument
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}
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// Id returns the canonical representation of the event's signature used by the
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// abi definition to identify event names and types.
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func (e Event) Id() common.Hash {
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types := make([]string, len(e.Inputs))
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i := 0
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for _, input := range e.Inputs {
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types[i] = input.Type.String()
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i++
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}
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return common.BytesToHash(crypto.Sha3([]byte(fmt.Sprintf("%v(%v)", e.Name, strings.Join(types, ",")))))
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}
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