go-ethereum/accounts/abi/argument.go
Jeffrey Wilcke bddf8f76c8 account/abi: implements event parsing
Implementation of basic event parsing and its input types. This
separates methods and events and fixes an issue with go type parsing and
validation.
2016-02-02 15:28:59 +01:00

50 lines
1.4 KiB
Go

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package abi
import (
"encoding/json"
"fmt"
)
// Argument holds the name of the argument and the corresponding type.
// Types are used when packing and testing arguments.
type Argument struct {
Name string
Type Type
Indexed bool // indexed is only used by events
}
func (a *Argument) UnmarshalJSON(data []byte) error {
var extarg struct {
Name string
Type string
}
err := json.Unmarshal(data, &extarg)
if err != nil {
return fmt.Errorf("argument json err: %v", err)
}
a.Type, err = NewType(extarg.Type)
if err != nil {
return err
}
a.Name = extarg.Name
return nil
}