Method mustReadByte

xmlparser/decoder.go:714–722

mustReadByte reads a single byte from the reader. If an error occurs, it sets d.err and returns false. If io.EOF is encountered, it sets d.err to a more descriptive error.

()

// If an error occurs, it sets d.err and returns false.
// If io.EOF is encountered, it sets d.err to a more descriptive error.
func (d *Decoder) mustReadByte() (byte, bool) {
	b, ok := d.readByte()
	if !ok {
		if errors.Is(d.err, io.EOF) {
			d.setSyntaxErrorf("unexpected EOF")
		}
	}
	return b, ok
}

// unreadByte unreads the last byte read from the reader.
// If an error occurs, it sets d.err and returns false.