forked from cerc-io/plugeth
d304da3803
This commit makes the wrapper types more generally applicable. encoding.TextMarshaler is supported by most codec implementations (e.g. for yaml). The tests now ensure that package json actually recognizes the custom marshaler implementation irrespective of how it is implemented. The Uint type has new tests, too. These are tricky because uint size depends on the CPU word size. Turns out that there was one incorrect case where decoding returned ErrUint64Range instead of ErrUintRange.
46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package hexutil_test
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import (
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"encoding/json"
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"fmt"
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"github.com/ethereum/go-ethereum/common/hexutil"
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)
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type MyType [5]byte
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func (v *MyType) UnmarshalText(input []byte) error {
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return hexutil.UnmarshalFixedText("MyType", input, v[:])
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}
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func (v MyType) String() string {
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return hexutil.Bytes(v[:]).String()
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}
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func ExampleUnmarshalFixedText() {
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var v1, v2 MyType
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fmt.Println("v1 error:", json.Unmarshal([]byte(`"0x01"`), &v1))
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fmt.Println("v2 error:", json.Unmarshal([]byte(`"0x0101010101"`), &v2))
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fmt.Println("v2:", v2)
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// Output:
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// v1 error: hex string has length 2, want 10 for MyType
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// v2 error: <nil>
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// v2: 0x0101010101
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}
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