caller

Documentation

Index

• func Lookup(depth int) (file string, line int, fun string)
• type CallResolver
  • func NewCallResolver(offset int, re *regexp.Regexp) *CallResolver
  • func (cr *CallResolver) Lookup(depth int) (file string, line int, fun string)

Functions

func Lookup

func Lookup(depth int) (file string, line int, fun string)

Lookup returns the (reduced) file, line and function of the caller at the requested depth, using a default call resolver which drops the path of the project repository.

Types

type CallResolver

type CallResolver struct {
	// contains filtered or unexported fields
}

A CallResolver is a helping hand around runtime.Caller() to look up file, line and name of the calling function. CallResolver caches the results of its lookups and strips the uninteresting prefix from both the caller's location and name; see NewCallResolver().

func NewCallResolver

func NewCallResolver(offset int, re *regexp.Regexp) *CallResolver

NewCallResolver returns a CallResolver. The supplied pattern must specify a valid regular expression and is used to format the paths returned by Lookup(): If submatches are specified, their concatenation forms the path, otherwise the match of the whole expression is used. Paths which do not match at all are left unchanged. TODO(bdarnell): don't strip paths at lookup time, but at display time; need better handling for callers such as x/tools/something.

func (*CallResolver) Lookup

func (cr *CallResolver) Lookup(depth int) (file string, line int, fun string)

Lookup returns the (reduced) file, line and function of the caller at the requested depth.