go/src/cmd/cover/func.go

func funcOutput(profile, outputFile string) error { … }

// findFuncs parses the file and returns a slice of FuncExtent descriptors.
func findFuncs(name string) ([]*FuncExtent, error) { … }

type FuncExtent …

type FuncVisitor …

// Visit implements the ast.Visitor interface.
func (v *FuncVisitor) Visit(node ast.Node) ast.Visitor { … }

// coverage returns the fraction of the statements in the function that were covered, as a numerator and denominator.
func (f *FuncExtent) coverage(profile *cover.Profile) (num, den int64) { … }

type Pkg …

func findPkgs(profiles []*cover.Profile) (map[string]*Pkg, error) { … }

// findFile finds the location of the named file in GOROOT, GOPATH etc.
func findFile(pkgs map[string]*Pkg, file string) (string, error) { … }

func percent(covered, total int64) float64 { … }