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solidity.go
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solidity.go
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// 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 wraps the ABI compilation outputs.
package compiler
import (
"encoding/json"
"fmt"
)
// --combined-output format
type solcOutput struct {
Contracts map[string]struct {
BinRuntime string `json:"bin-runtime"`
SrcMapRuntime string `json:"srcmap-runtime"`
Bin, SrcMap, Abi, Devdoc, Userdoc, Metadata string
Hashes map[string]string
}
Version string
}
// solidity v.0.8 changes the way ABI, Devdoc and Userdoc are serialized
type solcOutputV8 struct {
Contracts map[string]struct {
BinRuntime string `json:"bin-runtime"`
SrcMapRuntime string `json:"srcmap-runtime"`
Bin, SrcMap, Metadata string
Abi interface{}
Devdoc interface{}
Userdoc interface{}
Hashes map[string]string
}
Version string
}
// ParseCombinedJSON takes the direct output of a solc --combined-output run and
// parses it into a map of string contract name to Contract structs. The
// provided source, language and compiler version, and compiler options are all
// passed through into the Contract structs.
//
// The solc output is expected to contain ABI, source mapping, user docs, and dev docs.
//
// Returns an error if the JSON is malformed or missing data, or if the JSON
// embedded within the JSON is malformed.
func ParseCombinedJSON(combinedJSON []byte, source string, languageVersion string, compilerVersion string, compilerOptions string) (map[string]*Contract, error) {
var output solcOutput
if err := json.Unmarshal(combinedJSON, &output); err != nil {
// Try to parse the output with the new solidity v.0.8.0 rules
return parseCombinedJSONV8(combinedJSON, source, languageVersion, compilerVersion, compilerOptions)
}
// Compilation succeeded, assemble and return the contracts.
contracts := make(map[string]*Contract)
for name, info := range output.Contracts {
// Parse the individual compilation results.
var abi, userdoc, devdoc interface{}
if err := json.Unmarshal([]byte(info.Abi), &abi); err != nil {
return nil, fmt.Errorf("solc: error reading abi definition (%v)", err)
}
if err := json.Unmarshal([]byte(info.Userdoc), &userdoc); err != nil {
return nil, fmt.Errorf("solc: error reading userdoc definition (%v)", err)
}
if err := json.Unmarshal([]byte(info.Devdoc), &devdoc); err != nil {
return nil, fmt.Errorf("solc: error reading devdoc definition (%v)", err)
}
contracts[name] = &Contract{
Code: "0x" + info.Bin,
RuntimeCode: "0x" + info.BinRuntime,
Hashes: info.Hashes,
Info: ContractInfo{
Source: source,
Language: "Solidity",
LanguageVersion: languageVersion,
CompilerVersion: compilerVersion,
CompilerOptions: compilerOptions,
SrcMap: info.SrcMap,
SrcMapRuntime: info.SrcMapRuntime,
AbiDefinition: abi,
UserDoc: userdoc,
DeveloperDoc: devdoc,
Metadata: info.Metadata,
},
}
}
return contracts, nil
}
// parseCombinedJSONV8 parses the direct output of solc --combined-output
// and parses it using the rules from solidity v.0.8.0 and later.
func parseCombinedJSONV8(combinedJSON []byte, source string, languageVersion string, compilerVersion string, compilerOptions string) (map[string]*Contract, error) {
var output solcOutputV8
if err := json.Unmarshal(combinedJSON, &output); err != nil {
return nil, err
}
// Compilation succeeded, assemble and return the contracts.
contracts := make(map[string]*Contract)
for name, info := range output.Contracts {
contracts[name] = &Contract{
Code: "0x" + info.Bin,
RuntimeCode: "0x" + info.BinRuntime,
Hashes: info.Hashes,
Info: ContractInfo{
Source: source,
Language: "Solidity",
LanguageVersion: languageVersion,
CompilerVersion: compilerVersion,
CompilerOptions: compilerOptions,
SrcMap: info.SrcMap,
SrcMapRuntime: info.SrcMapRuntime,
AbiDefinition: info.Abi,
UserDoc: info.Userdoc,
DeveloperDoc: info.Devdoc,
Metadata: info.Metadata,
},
}
}
return contracts, nil
}