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Add packing for dynamic array and slice types (#18051)

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* added tests for new abi encoding features (#4)

* added tests from bytes32[][] and string[]

* added offset to other types

* formatting

* Abi/dynamic types (#5)

* Revert "Abi/dynamic types (#5)" (#6)

This reverts commit dabca31d79.

* Abi/dynamic types (#7)

* some cleanup

* Apply suggestions from code review

apply suggestions

Co-Authored-By: vedhavyas <vedhavyas.singareddi@gmail.com>

* added better formatting (#8)

* review chnages

* better comments
This commit is contained in:
Vedhavyas Singareddi
2018-12-04 15:27:55 +01:00
committed by Guillaume Ballet
parent f74077b4c2
commit 92639b676a
3 changed files with 117 additions and 22 deletions
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19
accounts/abi/argument.go
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@ -243,11 +243,7 @@ func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) {
// input offset is the bytes offset for packed output
inputOffset := 0
for _, abiArg := range abiArgs {
if abiArg.Type.T == ArrayTy {
inputOffset += 32 * abiArg.Type.Size
} else {
inputOffset += 32
}
inputOffset += getDynamicTypeOffset(abiArg.Type)
}
var ret []byte
for i, a := range args {
@ -257,14 +253,13 @@ func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) {
if err != nil {
return nil, err
}
// check for a slice type (string, bytes, slice)
if input.Type.requiresLengthPrefix() {
// calculate the offset
offset := inputOffset + len(variableInput)
// check for dynamic types
if isDynamicType(input.Type) {
// set the offset
ret = append(ret, packNum(reflect.ValueOf(offset))...)
// Append the packed output to the variable input. The variable input
// will be appended at the end of the input.
ret = append(ret, packNum(reflect.ValueOf(inputOffset))...)
// calculate next offset
inputOffset += len(packed)
// append to variable input
variableInput = append(variableInput, packed...)
} else {
// append the packed value to the input