/
argwriter.go
78 lines (60 loc) · 1.24 KB
/
argwriter.go
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package main
import "io"
type argWriter struct {
writer io.WriteCloser
err error
}
func newArgWriterPtr(writer io.WriteCloser, err error) *argWriter {
return &argWriter{writer, err}
}
func newArgWriterVal(writer io.WriteCloser, err error) argWriter {
return argWriter{writer, err}
}
func (w argWriter) writeVal(f func() error) error {
if w.err != nil {
return w.err
}
if err := f(); err != nil {
return err
}
return w.writer.Close()
}
func (w argWriter) writePtr(f func() error) error {
if w.err != nil {
return w.err
}
if err := f(); err != nil {
return err
}
return w.writer.Close()
}
func (w argWriter) WriteIndirectVal(bs []byte) error {
return w.writeVal(func() error {
_, err := w.writer.Write(bs)
return err
})
}
func (w *argWriter) WriteIndirectPtr(bs []byte) error {
return w.writePtr(func() error {
_, err := w.writer.Write(bs)
return err
})
}
func (w argWriter) WriteDirectVal(bs []byte) error {
if w.err != nil {
return w.err
}
if _, err := w.writer.Write(bs); err != nil {
return err
}
return w.writer.Close()
}
func (w *argWriter) WriteDirectPtr(bs []byte) error {
if w.err != nil {
return w.err
}
if _, err := w.writer.Write(bs); err != nil {
return err
}
return w.writer.Close()
}