gotosocial/vendor/codeberg.org/gruf/go-bitutil/flag.tpl

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package bitutil
import (
"strings"
"codeberg.org/gruf/go-bytes"
)
{{ range $idx, $size := . }}
// Flags{{ $size.Size }} is a type-casted unsigned integer with helper
// methods for easily managing up to {{ $size.Size }} bit flags.
type Flags{{ $size.Size }} uint{{ $size.Size }}
// Get will fetch the flag bit value at index 'bit'.
func (f Flags{{ $size.Size }}) Get(bit uint8) bool {
mask := Flags{{ $size.Size }}(1) << bit
return (f & mask != 0)
}
// Set will set the flag bit value at index 'bit'.
func (f Flags{{ $size.Size }}) Set(bit uint8) Flags{{ $size.Size }} {
mask := Flags{{ $size.Size }}(1) << bit
return f | mask
}
// Unset will unset the flag bit value at index 'bit'.
func (f Flags{{ $size.Size }}) Unset(bit uint8) Flags{{ $size.Size }} {
mask := Flags{{ $size.Size }}(1) << bit
return f & ^mask
}
{{ range $idx := $size.Bits }}
// Get{{ $idx }} will fetch the flag bit value at index {{ $idx }}.
func (f Flags{{ $size.Size }}) Get{{ $idx }}() bool {
const mask = Flags{{ $size.Size }}(1) << {{ $idx }}
return (f & mask != 0)
}
// Set{{ $idx }} will set the flag bit value at index {{ $idx }}.
func (f Flags{{ $size.Size }}) Set{{ $idx }}() Flags{{ $size.Size }} {
const mask = Flags{{ $size.Size }}(1) << {{ $idx }}
return f | mask
}
// Unset{{ $idx }} will unset the flag bit value at index {{ $idx }}.
func (f Flags{{ $size.Size }}) Unset{{ $idx }}() Flags{{ $size.Size }} {
const mask = Flags{{ $size.Size }}(1) << {{ $idx }}
return f & ^mask
}
{{ end }}
// String returns a human readable representation of Flags{{ $size.Size }}.
func (f Flags{{ $size.Size }}) String() string {
var val bool
var buf bytes.Buffer
buf.WriteByte('{')
{{ range $idx := .Bits }}
val = f.Get{{ $idx }}()
buf.WriteString(bool2str(val) + " ")
{{ end }}
buf.Truncate(1)
buf.WriteByte('}')
return buf.String()
}
// GoString returns a more verbose human readable representation of Flags{{ $size.Size }}.
func (f Flags{{ $size.Size }})GoString() string {
var val bool
var buf bytes.Buffer
buf.WriteString("bitutil.Flags{{ $size.Size }}{")
{{ range $idx := .Bits }}
val = f.Get{{ $idx }}()
buf.WriteString("{{ $idx }}="+bool2str(val)+" ")
{{ end }}
buf.Truncate(1)
buf.WriteByte('}')
return buf.String()
}
{{ end }}
func bool2str(b bool) string {
if b {
return "true"
}
return "false"
}