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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
// 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 compiler
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
)
var (
versionRegexp = regexp.MustCompile("[0-9]+\\.[0-9]+\\.[0-9]+")
legacyRegexp = regexp.MustCompile("0\\.(9\\..*|1\\.[01])")
paramsLegacy = []string{
"--binary", // Request to output the contract in binary (hexadecimal).
"file", //
"--json-abi", // Request to output the contract's JSON ABI interface.
"file", //
"--natspec-user", // Request to output the contract's Natspec user documentation.
"file", //
"--natspec-dev", // Request to output the contract's Natspec developer documentation.
"file",
"--add-std",
"1",
}
paramsNew = []string{
"--bin", // Request to output the contract in binary (hexadecimal).
"--abi", // Request to output the contract's JSON ABI interface.
"--userdoc", // Request to output the contract's Natspec user documentation.
"--devdoc", // Request to output the contract's Natspec developer documentation.
"--add-std", // include standard lib contracts
"--optimize", // code optimizer switched on
"-o", // output directory
}
)
type Contract struct {
Code string `json:"code"`
Info ContractInfo `json:"info"`
}
type ContractInfo struct {
Source string `json:"source"`
Language string `json:"language"`
LanguageVersion string `json:"languageVersion"`
CompilerVersion string `json:"compilerVersion"`
CompilerOptions string `json:"compilerOptions"`
AbiDefinition interface{} `json:"abiDefinition"`
UserDoc interface{} `json:"userDoc"`
DeveloperDoc interface{} `json:"developerDoc"`
}
type Solidity struct {
solcPath string
version string
fullVersion string
legacy bool
}
func New(solcPath string) (sol *Solidity, err error) {
// set default solc
if len(solcPath) == 0 {
solcPath = "solc"
}
solcPath, err = exec.LookPath(solcPath)
if err != nil {
return
}
cmd := exec.Command(solcPath, "--version")
var out bytes.Buffer
cmd.Stdout = &out
err = cmd.Run()
if err != nil {
return
}
fullVersion := out.String()
version := versionRegexp.FindString(fullVersion)
legacy := legacyRegexp.MatchString(version)
sol = &Solidity{
solcPath: solcPath,
version: version,
fullVersion: fullVersion,
legacy: legacy,
}
glog.V(logger.Info).Infoln(sol.Info())
return
}
func (sol *Solidity) Info() string {
return fmt.Sprintf("%s\npath: %s", sol.fullVersion, sol.solcPath)
}
func (sol *Solidity) Version() string {
return sol.version
}
// Compile builds and returns all the contracts contained within a source string.
func (sol *Solidity) Compile(source string) (map[string]*Contract, error) {
// Short circuit if no source code was specified
if len(source) == 0 {
return nil, errors.New("solc: empty source string")
}
// Create a safe place to dump compilation output
wd, err := ioutil.TempDir("", "solc")
if err != nil {
return nil, fmt.Errorf("solc: failed to create temporary build folder: %v", err)
}
defer os.RemoveAll(wd)
// Assemble the compiler command, change to the temp folder and capture any errors
stderr := new(bytes.Buffer)
var params []string
if sol.legacy {
params = paramsLegacy
} else {
params = paramsNew
params = append(params, wd)
}
compilerOptions := strings.Join(params, " ")
cmd := exec.Command(sol.solcPath, params...)
cmd.Dir = wd
cmd.Stdin = strings.NewReader(source)
cmd.Stderr = stderr
if err := cmd.Run(); err != nil {
return nil, fmt.Errorf("solc: %v\n%s", err, string(stderr.Bytes()))
}
// Sanity check that something was actually built
matches, _ := filepath.Glob(wd + "/*\\.bin*")
if len(matches) < 1 {
return nil, fmt.Errorf("solc: no build results found")
}
// Compilation succeeded, assemble and return the contracts
contracts := make(map[string]*Contract)
for _, path := range matches {
_, file := filepath.Split(path)
base := strings.Split(file, ".")[0]
// Parse the individual compilation results (code binary, ABI definitions, user and dev docs)
var binary []byte
binext := ".bin"
if sol.legacy {
binext = ".binary"
}
if binary, err = ioutil.ReadFile(filepath.Join(wd, base+binext)); err != nil {
return nil, fmt.Errorf("solc: error reading compiler output for code: %v", err)
}
var abi interface{}
if blob, err := ioutil.ReadFile(filepath.Join(wd, base+".abi")); err != nil {
return nil, fmt.Errorf("solc: error reading abi definition: %v", err)
} else if err = json.Unmarshal(blob, &abi); err != nil {
return nil, fmt.Errorf("solc: error parsing abi definition: %v", err)
}
var userdoc interface{}
if blob, err := ioutil.ReadFile(filepath.Join(wd, base+".docuser")); err != nil {
return nil, fmt.Errorf("solc: error reading user doc: %v", err)
} else if err = json.Unmarshal(blob, &userdoc); err != nil {
return nil, fmt.Errorf("solc: error parsing user doc: %v", err)
}
var devdoc interface{}
if blob, err := ioutil.ReadFile(filepath.Join(wd, base+".docdev")); err != nil {
return nil, fmt.Errorf("solc: error reading dev doc: %v", err)
} else if err = json.Unmarshal(blob, &devdoc); err != nil {
return nil, fmt.Errorf("solc: error parsing dev doc: %v", err)
}
// Assemble the final contract
contracts[base] = &Contract{
Code: "0x" + string(binary),
Info: ContractInfo{
Source: source,
Language: "Solidity",
LanguageVersion: sol.version,
CompilerVersion: sol.version,
CompilerOptions: compilerOptions,
AbiDefinition: abi,
UserDoc: userdoc,
DeveloperDoc: devdoc,
},
}
}
return contracts, nil
}
func SaveInfo(info *ContractInfo, filename string) (contenthash common.Hash, err error) {
infojson, err := json.Marshal(info)
if err != nil {
return
}
contenthash = common.BytesToHash(crypto.Keccak256(infojson))
err = ioutil.WriteFile(filename, infojson, 0600)
return
}
|
