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wagon_utils.go
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/
wagon_utils.go
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package vm
import (
"bytes"
"fmt"
"github.com/AlayaNetwork/Alaya-Go/common"
"github.com/AlayaNetwork/Alaya-Go/rlp"
"github.com/PlatONnetwork/wagon/exec"
"github.com/PlatONnetwork/wagon/validate"
"github.com/PlatONnetwork/wagon/wasm"
)
func ReadWasmModule(Code []byte, verify bool) (*exec.CompiledModule, error) {
m, err := wasm.ReadModule(bytes.NewReader(Code), func(name string) (*wasm.Module, error) {
switch name {
case "env":
return NewHostModule(), nil
}
return nil, fmt.Errorf("module %q unknown", name)
})
if err != nil {
return nil, err
}
if verify {
err = validate.VerifyModule(m)
if err != nil {
return nil, err
}
}
compiled, err := exec.CompileModule(m)
if err != nil {
return nil, err
}
return compiled, nil
}
func decodeFuncAndParams(input []byte) (uint64, []byte, error) {
content, _, err := rlp.SplitList(input)
if nil != err {
return 0, nil, fmt.Errorf("failed to decode input funcName and params: %v", err)
}
funcName, params, err := rlp.SplitString(content)
if nil != err {
return 0, nil, fmt.Errorf("failed to decode input funcName and params: %v", err)
}
return common.BytesToUint64(funcName), params, nil
}