mirror of https://github.com/poanetwork/quorum.git
98 lines
2.8 KiB
Go
98 lines
2.8 KiB
Go
// Copyright 2016 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 abi
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
// indirect recursively dereferences the value until it either gets the value
|
|
// or finds a big.Int
|
|
func indirect(v reflect.Value) reflect.Value {
|
|
if v.Kind() == reflect.Ptr && v.Elem().Type() != big_t {
|
|
return indirect(v.Elem())
|
|
}
|
|
return v
|
|
}
|
|
|
|
// reflectIntKind returns the reflect using the given size and
|
|
// unsignedness.
|
|
func reflectIntKind(unsigned bool, size int) reflect.Kind {
|
|
switch size {
|
|
case 8:
|
|
if unsigned {
|
|
return reflect.Uint8
|
|
}
|
|
return reflect.Int8
|
|
case 16:
|
|
if unsigned {
|
|
return reflect.Uint16
|
|
}
|
|
return reflect.Int16
|
|
case 32:
|
|
if unsigned {
|
|
return reflect.Uint32
|
|
}
|
|
return reflect.Int32
|
|
case 64:
|
|
if unsigned {
|
|
return reflect.Uint64
|
|
}
|
|
return reflect.Int64
|
|
}
|
|
return reflect.Ptr
|
|
}
|
|
|
|
// mustArrayToBytesSlice creates a new byte slice with the exact same size as value
|
|
// and copies the bytes in value to the new slice.
|
|
func mustArrayToByteSlice(value reflect.Value) reflect.Value {
|
|
slice := reflect.MakeSlice(reflect.TypeOf([]byte{}), value.Len(), value.Len())
|
|
reflect.Copy(slice, value)
|
|
return slice
|
|
}
|
|
|
|
// set attempts to assign src to dst by either setting, copying or otherwise.
|
|
//
|
|
// set is a bit more lenient when it comes to assignment and doesn't force an as
|
|
// strict ruleset as bare `reflect` does.
|
|
func set(dst, src reflect.Value, output Argument) error {
|
|
dstType := dst.Type()
|
|
srcType := src.Type()
|
|
|
|
switch {
|
|
case dstType.AssignableTo(src.Type()):
|
|
dst.Set(src)
|
|
case dstType.Kind() == reflect.Array && srcType.Kind() == reflect.Slice:
|
|
if !dstType.Elem().AssignableTo(r_byte) {
|
|
return fmt.Errorf("abi: cannot unmarshal %v in to array of elem %v", src.Type(), dstType.Elem())
|
|
}
|
|
|
|
if dst.Len() < output.Type.SliceSize {
|
|
return fmt.Errorf("abi: cannot unmarshal src (len=%d) in to dst (len=%d)", output.Type.SliceSize, dst.Len())
|
|
}
|
|
reflect.Copy(dst, src)
|
|
case dstType.Kind() == reflect.Interface:
|
|
dst.Set(src)
|
|
case dstType.Kind() == reflect.Ptr:
|
|
return set(dst.Elem(), src, output)
|
|
default:
|
|
return fmt.Errorf("abi: cannot unmarshal %v in to %v", src.Type(), dst.Type())
|
|
}
|
|
return nil
|
|
}
|