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Alan Donovan d6e83e534d go/loader: changes for vendor support 
Prior to this change, the loader made the simplifying assumption
that an import path is equal to a package path, that is, a
subdirectory of src/.  (This assumption was already false because
relative imports "../foo" are possible, though discouraged.)
Now, an import "foo" may denote "a/vendor/foo" or "b/vendor/foo"
depending on whether it appears beneath a/ or b/.  Thus import
paths and package paths are no longer the same, and the directory
containing an import declaration is a necessary input to the
import resolution function.

This change makes the loader hygienic w.r.t. the directory of
each import declaration, and cleans up the terminology.
The only API change is to the FindPackage hook, which most
clients never use.

Details:
- Add a 'fromDir string' parameter to the FindPackage hook function.
- Add a dir field to each PackageInfo.
- doImport (called by go/types) now consists of two steps:
  use FindPackage(dir, importPath) to locate the package,
  then consult the import map using the canonical package path.
  Only the first step can fail.
- Memoize FindPackage.
- Simplify importInfo now that it no longer has to deal with errors.
  Replace a condition variable with a channel.
- Use a separate type to report importErrors.
- Rename loadAll to importAll
- Delete the importMode constant.
- Test.

Change-Id: I3defab51bfa12b48b1511a2172fb48dc8e9150e6
Reviewed-on: https://go-review.googlesource.com/18053
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-12-22 18:31:24 +00:00
benchmark/parse benchmark/parse: fix cosmetic defect in error str. 2015-02-02 17:07:43 +00:00
blog tools: add import comments. 2014-12-09 22:42:16 +00:00
cmd cmd/bundle: add blank line before package declaration 2015-12-18 13:56:53 +00:00
container/intsets container/intsets: use fast popcount with gccgo 2015-11-11 02:17:02 +00:00
cover cover: accept inaccurate block endings 2015-01-07 02:00:16 +00:00
go go/loader: changes for vendor support 2015-12-22 18:31:24 +00:00
godoc godoc/dl: update label for ARMv6 binary distribution 2015-12-20 20:15:05 +00:00
imports imports: Remove ancient Go 1.1 compatibility indirections. 2015-12-14 00:47:31 +00:00
oracle oracle: implements: inspect all packages in the analysis scope 2015-12-02 22:28:52 +00:00
playground playground/socket: only buffer messages of one kind, add tests 2015-10-30 06:08:43 +00:00
present present: don't ignore command within text scope 2015-10-30 00:41:15 +00:00
refactor refactor/importgraph: changes for vendor support 2015-12-18 20:17:50 +00:00
.gitattributes tools: copying .gitattributes to all subrepositories (fixes windows build) 2014-12-23 06:32:51 +00:00
.gitignore dashboard: rearrange tree, in prep for packagification 2015-01-15 02:58:11 +00:00
AUTHORS go.empty: prototype for new subrepository 2012-01-25 14:45:13 -05:00
codereview.cfg tools: add codereview.cfg 2015-03-18 17:04:00 +00:00
CONTRIBUTING.md doc: add CONTRIBUTING.md 2015-02-18 23:43:38 +00:00
CONTRIBUTORS go.empty: prototype for new subrepository 2012-01-25 14:45:13 -05:00
LICENSE LICENSE: add 2012-03-17 15:20:58 +11:00
PATENTS go.empty: add PATENTS file to the subrepo. 2012-04-16 11:24:04 +10:00
README go.tools/README: minor correction. 2013-10-29 13:20:58 -04:00

README 

This subrepository holds the source for various packages and tools that support
the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.
Others, including the Go oracle and the test coverage tool, can be fetched with "go get".

Packages include a type-checker for Go and an implementation of the
Static Single Assignment form (SSA) representation for Go programs.

To submit changes to this repository, see http://golang.org/doc/contribute.html.