plugeth/accounts/abi/reflect.go
RJ Catalano 5421a08d2f accounts/abi: reorganizing package with small fixes (#14610)
* accounts/abi: reorganizing package and some notes and a quick correction of name.

Signed-off-by: RJ Catalano <rj@monax.io>

get rid of some imports

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: move file names

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix boolean decode function

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix for the array set and for creating a bool

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: be very very very correct

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix up error message and variable names

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: take out unnecessary argument in pack method

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: add bool unpack test and add a panic to readBool function

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix panic message

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: change from panic to basic error

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix nil to false

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fill out type regex tests and fill with the correct type for integers

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: move packNumbers into pack.go.

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: separation of the testing suite into appropriately named files.

Signed-off-by: RJ Catalano <rj@monax.io>

* account/abi: change to hex string tests.

Signed-off-by: RJ Catalano <rj@monax.io>

* account/abi: fix up rest of tests to hex

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: declare bool at the package level

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: use errors package in the error file.

Signed-off-by: RJ Catalano <rj@monax.io>

* accounts/abi: fix ugly hack and fix error type declaration.

Signed-off-by: RJ Catalano <rj@monax.io>
2017-06-27 11:05:33 +03:00

94 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 reflectIntKindAndType(unsigned bool, size int) (reflect.Kind, reflect.Type) {
switch size {
case 8:
if unsigned {
return reflect.Uint8, uint8_t
}
return reflect.Int8, int8_t
case 16:
if unsigned {
return reflect.Uint16, uint16_t
}
return reflect.Int16, int16_t
case 32:
if unsigned {
return reflect.Uint32, uint32_t
}
return reflect.Int32, int32_t
case 64:
if unsigned {
return reflect.Uint64, uint64_t
}
return reflect.Int64, int64_t
}
return reflect.Ptr, big_t
}
// 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 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
}