github.com/sberex/go-sberex@v1.8.2-0.20181113200658-ed96ac38f7d7/common/types_template.go (about)

     1  // This file is part of the go-sberex library. The go-sberex library is 
     2  // free software: you can redistribute it and/or modify it under the terms 
     3  // of the GNU Lesser General Public License as published by the Free 
     4  // Software Foundation, either version 3 of the License, or (at your option)
     5  // any later version.
     6  //
     7  // The go-sberex library is distributed in the hope that it will be useful, 
     8  // but WITHOUT ANY WARRANTY; without even the implied warranty of
     9  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 
    10  // General Public License <http://www.gnu.org/licenses/> for more details.
    11  
    12  // +build none
    13  //sed -e 's/_N_/Hash/g' -e 's/_S_/32/g' -e '1d' types_template.go | gofmt -w hash.go
    14  
    15  package common
    16  
    17  import "math/big"
    18  
    19  type _N_ [_S_]byte
    20  
    21  func BytesTo_N_(b []byte) _N_ {
    22  	var h _N_
    23  	h.SetBytes(b)
    24  	return h
    25  }
    26  func StringTo_N_(s string) _N_ { return BytesTo_N_([]byte(s)) }
    27  func BigTo_N_(b *big.Int) _N_  { return BytesTo_N_(b.Bytes()) }
    28  func HexTo_N_(s string) _N_    { return BytesTo_N_(FromHex(s)) }
    29  
    30  // Don't use the default 'String' method in case we want to overwrite
    31  
    32  // Get the string representation of the underlying hash
    33  func (h _N_) Str() string   { return string(h[:]) }
    34  func (h _N_) Bytes() []byte { return h[:] }
    35  func (h _N_) Big() *big.Int { return new(big.Int).SetBytes(h[:]) }
    36  func (h _N_) Hex() string   { return "0x" + Bytes2Hex(h[:]) }
    37  
    38  // Sets the hash to the value of b. If b is larger than len(h) it will panic
    39  func (h *_N_) SetBytes(b []byte) {
    40  	// Use the right most bytes
    41  	if len(b) > len(h) {
    42  		b = b[len(b)-_S_:]
    43  	}
    44  
    45  	// Reverse the loop
    46  	for i := len(b) - 1; i >= 0; i-- {
    47  		h[_S_-len(b)+i] = b[i]
    48  	}
    49  }
    50  
    51  // Set string `s` to h. If s is larger than len(h) it will panic
    52  func (h *_N_) SetString(s string) { h.SetBytes([]byte(s)) }
    53  
    54  // Sets h to other
    55  func (h *_N_) Set(other _N_) {
    56  	for i, v := range other {
    57  		h[i] = v
    58  	}
    59  }