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eth/tracers/js: avoid compiling js bigint when not needed

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Martin Holst Swende 2024-10-19 22:16:47 +02:00
parent 48d05c43c9
commit 717fc2b063
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GPG key ID: 683B438C05A5DDF0
1 changed files with 13 additions and 4 deletions
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17
eth/tracers/js/goja.go
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@ -22,6 +22,7 @@ import (
"fmt"
"math/big"
"slices"
"sync"
"github.com/dop251/goja"
"github.com/ethereum/go-ethereum/core/tracing"
@ -59,9 +60,17 @@ func init() {
tracers.DefaultDirectory.RegisterJSEval(newJsTracer)
}
// bigIntProgram is compiled once and the exported function mostly invoked to convert
// hex strings into big ints.
var bigIntProgram = goja.MustCompile("bigInt", bigIntegerJS, false)
var compiledBigInt *goja.Program
var compileOnce sync.Once
// getBigIntProgram compiles the bigint library, if needed, and returns the compiled
// goja program.
func getBigIntProgram() *goja.Program {
compileOnce.Do(func() {
compiledBigInt = goja.MustCompile("bigInt", bigIntegerJS, false)
})
return compiledBigInt
}
type toBigFn = func(vm *goja.Runtime, val string) (goja.Value, error)
type toBufFn = func(vm *goja.Runtime, val []byte) (goja.Value, error)
@ -567,7 +576,7 @@ func (t *jsTracer) setBuiltinFunctions() {
func (t *jsTracer) setTypeConverters() error {
// Inject bigint logic.
// TODO: To be replaced after goja adds support for native JS bigint.
toBigCode, err := t.vm.RunProgram(bigIntProgram)
toBigCode, err := t.vm.RunProgram(getBigIntProgram())
if err != nil {
return err
}