| // Copyright 2013 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| /* | |
| Cover is a program for analyzing the coverage profiles generated by | |
| 'go test -coverprofile=cover.out'. | |
| Cover is also used by 'go test -cover' to rewrite the source code with | |
| annotations to track which parts of each function are executed (this | |
| is referred to "instrumentation"). Cover can operate in "legacy mode" | |
| on a single Go source file at a time, or when invoked by the Go tool | |
| it will process all the source files in a single package at a time | |
| (package-scope instrumentation is enabled via "-pkgcfg" option). | |
| When generated instrumented code, the cover tool computes approximate | |
| basic block information by studying the source. It is thus more | |
| portable than binary-rewriting coverage tools, but also a little less | |
| capable. For instance, it does not probe inside && and || expressions, | |
| and can be mildly confused by single statements with multiple function | |
| literals. | |
| When computing coverage of a package that uses cgo, the cover tool | |
| must be applied to the output of cgo preprocessing, not the input, | |
| because cover deletes comments that are significant to cgo. | |
| For usage information, please see: | |
| go help testflag | |
| go tool cover -help | |
| */ | |
| package main | |