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Commit 01f6f2d7 authored by Felix Lange's avatar Felix Lange Committed by GitHub
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common/hexutil: allow empty strings when decoding JSON (#3559)

parent c5df37c1
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Inline Side-by-side
Showing with 5 additions and 5 deletions
common/hexutil/json.go
View file @ 01f6f2d7
......@@ -237,7 +237,7 @@ func checkJSON(input []byte) (raw []byte, err error) {
return nil, errNonString
}
if len(input) == 2 {
return nil, ErrEmptyString
return nil, nil // empty strings are allowed
}
if !bytesHave0xPrefix(input[1:]) {
return nil, ErrMissingPrefix
......@@ -255,7 +255,7 @@ func checkNumberJSON(input []byte) (raw []byte, err error) {
}
input = input[1 : len(input)-1]
if len(input) == 0 {
return nil, ErrEmptyString
return nil, nil // empty strings are allowed
}
if !bytesHave0xPrefix(input) {
return nil, ErrMissingPrefix
......
common/hexutil/json_test.go
View file @ 01f6f2d7
......@@ -60,13 +60,13 @@ var unmarshalBytesTests = []unmarshalTest{
{input: "", wantErr: errNonString},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `""`, wantErr: ErrEmptyString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x0"`, wantErr: ErrOddLength},
{input: `"0xxx"`, wantErr: ErrSyntax},
{input: `"0x01zz01"`, wantErr: ErrSyntax},
// valid encoding
{input: `""`, want: referenceBytes("")},
{input: `"0x"`, want: referenceBytes("")},
{input: `"0x02"`, want: referenceBytes("02")},
{input: `"0X02"`, want: referenceBytes("02")},
......@@ -125,7 +125,6 @@ var unmarshalBigTests = []unmarshalTest{
{input: "", wantErr: errNonString},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `""`, wantErr: ErrEmptyString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
......@@ -133,6 +132,7 @@ var unmarshalBigTests = []unmarshalTest{
{input: `"0x1zz01"`, wantErr: ErrSyntax},
// valid encoding
{input: `""`, want: big.NewInt(0)},
{input: `"0x0"`, want: big.NewInt(0)},
{input: `"0x2"`, want: big.NewInt(0x2)},
{input: `"0x2F2"`, want: big.NewInt(0x2f2)},
......@@ -198,7 +198,6 @@ var unmarshalUint64Tests = []unmarshalTest{
{input: "", wantErr: errNonString},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `""`, wantErr: ErrEmptyString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
......@@ -207,6 +206,7 @@ var unmarshalUint64Tests = []unmarshalTest{
{input: `"0x1zz01"`, wantErr: ErrSyntax},
// valid encoding
{input: `""`, want: uint64(0)},
{input: `"0x0"`, want: uint64(0)},
{input: `"0x2"`, want: uint64(0x2)},
{input: `"0x2F2"`, want: uint64(0x2f2)},
......
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