aboutsummaryrefslogtreecommitdiffstats
path: root/accounts/abi/argument.go
blob: 59bcc117ce7cede1422bb338e29d714380b89d76 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
// 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
}

// UnmarshalJSON implements json.Unmarshaler interface
func (a *Argument) UnmarshalJSON(data []byte) error {
    var extarg struct {
        Name    string
        Type    string
        Indexed bool
    }
    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
    a.Indexed = extarg.Indexed

    return nil
}

func countNonIndexedArguments(args []Argument) int {
    out := 0
    for i := range args {
        if !args[i].Indexed {
            out++
        }
    }
    return out
}