Official Go implementation of the Ethereum protocol
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go-ethereum/eth/tracers/js/internal/tracers/tracers.go

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1.8 KiB

// Copyright 2017 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 tracers contains the actual JavaScript tracer assets.
package tracers
import (
"embed"
"io/fs"
"strings"
"unicode"
)
//go:embed *.js
var files embed.FS
// Load reads the built-in JS tracer files embedded in the binary and
// returns a mapping of tracer name to source.
func Load() (map[string]string, error) {
var assetTracers = make(map[string]string)
err := fs.WalkDir(files, ".", func(path string, d fs.DirEntry, err error) error {
if err != nil {
return err
}
if d.IsDir() {
return nil
}
b, err := fs.ReadFile(files, path)
if err != nil {
return err
}
name := camel(strings.TrimSuffix(path, ".js"))
assetTracers[name] = string(b)
return nil
})
return assetTracers, err
}
// camel converts a snake cased input string into a camel cased output.
func camel(str string) string {
pieces := strings.Split(str, "_")
for i := 1; i < len(pieces); i++ {
pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:]
}
return strings.Join(pieces, "")
}