func()

in storage/benchfmt/benchfmt.go [229:275]

• 43 lines of code
• 11 McCabe index (conditional complexity)

func (r *Reader) Next() bool {
	if r.err != nil {
		return false
	}
	copied := false
	havePerm := r.permLabels != nil
	for r.s.Scan() {
		r.lineNum++
		line := r.s.Text()
		if key, value, ok := parseKeyValueLine(line); ok {
			if _, ok := r.permLabels[key]; ok {
				continue
			}
			if !copied {
				copied = true
				r.labels = r.labels.Copy()
			}
			// TODO(quentin): Spec says empty value is valid, but
			// we need a way to cancel previous labels, so we'll
			// treat an empty value as a removal.
			if value == "" {
				delete(r.labels, key)
			} else {
				r.labels[key] = value
			}
			continue
		}
		// Blank line delimits the header. If we find anything else, the file must not have a header.
		if !havePerm {
			if line == "" {
				r.permLabels = r.labels.Copy()
			} else {
				r.permLabels = Labels{}
			}
		}
		if fullName, ok := parseBenchmarkLine(line); ok {
			r.result = r.newResult(r.labels, r.lineNum, fullName, line)
			return true
		}
	}
	if err := r.s.Err(); err != nil {
		r.err = err
		return false
	}
	r.err = io.EOF
	return false
}