common/types_template.go


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// +build none
//sed -e 's/_N_/Hash/g' -e 's/_S_/32/g' -e '1d' types_template.go | gofmt -w hash.go

package common

import "math/big"

type _N_ [_S_]byte

func BytesTo_N_(b []byte) _N_ {
    var h _N_
    h.SetBytes(b)
    return h
}
func StringTo_N_(s string) _N_ { return BytesTo_N_([]byte(s)) }
func BigTo_N_(b *big.Int) _N_  { return BytesTo_N_(b.Bytes()) }
func HexTo_N_(s string) _N_    { return BytesTo_N_(FromHex(s)) }

// Don't use the default 'String' method in case we want to overwrite

// Get the string representation of the underlying hash
func (h _N_) Str() string   { return string(h[:]) }
func (h _N_) Bytes() []byte { return h[:] }
func (h _N_) Big() *big.Int { return Bytes2Big(h[:]) }
func (h _N_) Hex() string   { return "0x" + Bytes2Hex(h[:]) }

// Sets the hash to the value of b. If b is larger than len(h) it will panic
func (h *_N_) SetBytes(b []byte) {
    // Use the right most bytes
    if len(b) > len(h) {
        b = b[len(b)-_S_:]
    }

    // Reverse the loop
    for i := len(b) - 1; i >= 0; i-- {
        h[_S_-len(b)+i] = b[i]
    }
}

// Set string `s` to h. If s is larger than len(h) it will panic
func (h *_N_) SetString(s string) { h.SetBytes([]byte(s)) }

// Sets h to other
func (h *_N_) Set(other _N_) {
    for i, v := range other {
        h[i] = v
    }
}