Method formatEntries

errbase/format_error.go:195–233

formatEntries reads the entries from s.entries and produces a detailed rendering in s.finalBuf. Note that if s.redactableOutput is true, s.finalBuf is to contain a RedactableBytes. However, we are not using the helper facilities from redact.SafePrinter to do this, so care should be taken below to p

(err error)

// from redact.SafePrinter to do this, so care should be taken below
// to properly escape markers, etc.
func (s *state) formatEntries(err error) {
	// The first entry at the top is special. We format it as follows:
	//
	//   <complete error message>
	//   (1) <details>
	s.formatSingleLineOutput()
	s.finalBuf.WriteString("\n(1)")

	s.printEntry(s.entries[len(s.entries)-1])

	// All the entries that follow are printed as follows:
	//
	// Wraps: (N) <details>
	//
	for i, j := len(s.entries)-2, 2; i >= 0; i, j = i-1, j+1 {
		s.finalBuf.WriteByte('\n')
		// Extra indentation starts at depth==2 because the direct
		// children of the root error area already printed on separate
		// newlines.
		for m := 0; m < s.entries[i].depth-1; m += 1 {
			if m == s.entries[i].depth-2 {
				s.finalBuf.WriteString("└─ ")
			} else {
				s.finalBuf.WriteByte(' ')
				s.finalBuf.WriteByte(' ')
			}
		}
		fmt.Fprintf(&s.finalBuf, "Wraps: (%d)", j)
		entry := s.entries[i]
		s.printEntry(entry)
	}

	// At the end, we link all the (N) references to the Go type of the
	// error.
	s.finalBuf.WriteString("\nError types:")
	for i, j := len(s.entries)-1, 1; i >= 0; i, j = i-1, j+1 {
		fmt.Fprintf(&s.finalBuf, " (%d) %T", j, s.entries[i].err)
	}
}

// printEntry renders the entry given as argument
// into s.finalBuf.