Method startOfLine

expfmt/text_parse.go:195–219

startOfLine represents the state where the next byte read from p.buf is the start of a line (or whitespace leading up to it).

()

// startOfLine represents the state where the next byte read from p.buf is the
// start of a line (or whitespace leading up to it).
func (p *TextParser) startOfLine() stateFn {
	p.lineCount++
	p.currentMetricIsInsideBraces = false
	p.currentMetricInsideBracesIsPresent = false
	if p.skipBlankTab(); p.err != nil {
		// This is the only place that we expect to see io.EOF,
		// which is not an error but the signal that we are done.
		// Any other error that happens to align with the start of
		// a line is still an error.
		if errors.Is(p.err, io.EOF) {
			p.err = nil
		}
		return nil
	}
	switch p.currentByte {
	case '#':
		return p.startComment
	case '\n':
		return p.startOfLine // Empty line, start the next one.
	case '{':
		p.currentMetricIsInsideBraces = true
		return p.readingLabels
	}
	return p.readingMetricName
}

// startComment represents the state where the next byte read from p.buf is the
// start of a comment (or whitespace leading up to it).