func GetCallstack()

in appinsights/exception.go [86:138]
39 lines of code
8 McCabe index (conditional complexity)

func GetCallstack(skip int) []*contracts.StackFrame {
	var stackFrames []*contracts.StackFrame

	if skip < 0 {
		skip = 0
	}

	stack := make([]uintptr, 64+skip)
	depth := runtime.Callers(skip+1, stack)
	if depth == 0 {
		return stackFrames
	}

	frames := runtime.CallersFrames(stack[:depth])
	level := 0
	for {
		frame, more := frames.Next()

		stackFrame := &contracts.StackFrame{
			Level:    level,
			FileName: frame.File,
			Line:     frame.Line,
		}

		if frame.Function != "" {
			/* Default */
			stackFrame.Method = frame.Function

			/* Break up function into assembly/function */
			lastSlash := strings.LastIndexByte(frame.Function, '/')
			if lastSlash < 0 {
				// e.g. "runtime.gopanic"
				// The below works with lastSlash=0
				lastSlash = 0
			}

			firstDot := strings.IndexByte(frame.Function[lastSlash:], '.')
			if firstDot >= 0 {
				stackFrame.Assembly = frame.Function[:lastSlash+firstDot]
				stackFrame.Method = frame.Function[lastSlash+firstDot+1:]
			}
		}

		stackFrames = append(stackFrames, stackFrame)

		level++
		if !more {
			break
		}
	}

	return stackFrames
}