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Russ Cox 25733a94fd reflect: support for struct tag use by multiple packages
Each package using struct field tags assumes that
it is the only package storing data in the tag.
This CL adds support in package reflect for sharing
tags between multiple packages.  In this scheme, the
tags must be of the form

        key:"value" key2:"value2"

(raw strings help when writing that tag in Go source).

reflect.StructField's Tag field now has type StructTag
(a string type), which has method Get(key string) string
that returns the associated value.

Clients of json and xml will need to be updated.
Code that says

        type T struct {
                X int "name"
        }

should become

        type T struct {
                X int `json:"name"`  // or `xml:"name"`
        }

Use govet to identify struct tags that need to be changed
to use the new syntax.

R=r, r, dsymonds, bradfitz, kevlar, fvbommel, n13m3y3r
CC=golang-dev
https://golang.org/cl/4645069
2011-06-29 09:52:34 -04:00
doc 5l, 6l, 8l: drop use of ed during build 2011-06-27 12:03:19 -04:00
include build: fix header files for Plan 9 2011-06-14 14:14:11 -04:00
lib codereview: restrict sync to default branch 2011-06-29 00:45:29 -04:00
misc builder: minor fixes 2011-06-28 16:01:52 +10:00
src reflect: support for struct tag use by multiple packages 2011-06-29 09:52:34 -04:00
test gc: avoid package name ambiguity in error messages 2011-06-27 18:44:30 -04:00
.hgignore go/build: exclude cgo test from arm 2011-06-06 09:25:30 +10:00
.hgtags tag weekly.2011-06-23 2011-06-24 16:18:39 +10:00
AUTHORS A+C: Ken Rockot (individual CLA) 2011-06-22 18:07:08 -04:00
CONTRIBUTORS CONTRIBUTORS: update Rietveld address for Kyle Lemons 2011-06-27 19:07:22 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.

After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.

Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README).  You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:

    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.