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Daniel Martí b2e66f1aec cmd/vet: rewrite structtag using go/types
This lets us simplify the code considerably. For example, unquoting the
tag is no longer necessary, and we can get the field name with a single
method call.

While at it, fix a typechecking error in testdata/structtag.go, which
hadn't been caught since vet still skips past go/types errors in most
cases.

Using go/types will also let us expand the structtag check more easily
if we want to, for example to allow it to check for duplicates in
embedded fields.

Finally, update one of the test cases to check for regressions when we
output invalid tag strings. We also checked that these two changes to
testdata/structtag.go didn't fail with the old structtag check.

For #25593.

Change-Id: Iea4906d0f30a67f36b28c21d8aa96251aae653f5
Reviewed-on: https://go-review.googlesource.com/115676
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Rob Pike <r@golang.org>
2018-08-20 12:54:31 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api api: add ErrorHandler function to httputil.ReverseProxy 2018-07-19 20:39:19 +00:00
doc doc/go1.11: Delve 1.1.0 added support for method calls 2018-08-20 02:42:36 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc misc/cgo/testcshared: force descriptor 30 to be closed when execing test 2018-08-01 23:10:11 +00:00
src cmd/vet: rewrite structtag using go/types 2018-08-20 12:54:31 +00:00
test cmd/compile/internal/gc: add nil check for closure call on wasm 2018-08-14 09:19:38 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: second and final round of updates for Go 1.11 2018-08-12 19:56:28 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: second and final round of updates for Go 1.11 2018-08-12 19:56:28 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
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