Robert Griesemer [Fri, 2 Mar 2012 19:16:05 +0000 (11:16 -0800)]
go/printer: simpler exprList code, more tests
Except for the tests, this is mostly deleting code:
- removed several exprListModes:
blankStart: easily done explicitly, and trailing blanks
are cleaned up by the trimmer post-pass
blankEnd: never used
commaSep: all exprLists calls had this set
- added test cases for multi-line returns
(for a later fix of issue 1207)
Russ Cox [Fri, 2 Mar 2012 16:27:36 +0000 (11:27 -0500)]
cmd/go: fix test import dependency bug
Fixes a problem Rob is having with goprotobuf.
Cannot add a test because the same case is more broken
when using ./ imports. That still needs to be fixed,
and is one aspect of issue 3169.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5725043
Russ Cox [Fri, 2 Mar 2012 00:42:39 +0000 (19:42 -0500)]
go/build: fix build
Presumably something about the very large go/build
doc comment breaks the build constraint parser in
cmd/dist. I don't feel like debugging C code right now,
so move it into its own file. If cmd/dist decides doc.go
is not part of the package, it will still build correctly.
Robert Griesemer [Thu, 1 Mar 2012 21:57:49 +0000 (13:57 -0800)]
spec: clarifications around exports, uniqueness of identifiers
- Define what it means for two identifiers to be unique.
- The current spec is incorrect about exported
identifiers: for instance, it excluded fields
of non-exported types of exported variables
from being exported. It is easier to leave
the detailed specification away and let the
rest of the spec govern access of exported
identifiers.
- The current spec is incorrect about qualified
identifiers: It simply required that an identifier
be exported to be valid in a qualified identifier.
However, qualified identifiers can only access
exported identifiers declared in the package
block of the imported package.
Fixes #1551.
R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/5711043
Dmitriy Vyukov [Thu, 1 Mar 2012 17:26:08 +0000 (21:26 +0400)]
sync: remove old WaitGroup example
The docs look awkward - there is a paragraph
"For example:" with a plain text example,
and straight below it a real Example.
Russ Cox [Thu, 1 Mar 2012 17:12:22 +0000 (12:12 -0500)]
cmd/go: fixes
* Install tools into tool dir always
(Fixes issue 3049. Fixes issue 2868. Fixes issue 2925.)
* Make packages depend on compiler, linker (Fixes issue 3036.)
* Do not recompile packages across roots (Fixes issue 3149.)
* Allow use of binary-only packages (Fixes issue 2775.)
* Avoid duplicate cgo dependencies (Fixes issue 3001.)
* Show less in go get -x. (Fixes issue 2926.)
* Do not force repo root for existing checkout (Fixes issue 2969.)
* Show full syntax error list always (Fixes issue 2811.)
* Clean arguments before processing (Fixes issue 3034.)
* Add flags for compiler, linker arguments (Fixes issue 2996.)
* Pass flags in make.bash (Fixes issue 3091.)
* Unify build flags, defined in one place.
* Clean up error messages (Fixes issue 3075. Fixes issue 2923.)
* Support local import paths (Fixes issue 3118.)
* Allow top-level package outside $GOPATH (Fixes issue 3009.)
In addition to these fixes, all commands now take a list of
go files as a way to specify a single package, just as go build and
go run always have. This means you can:
go list -json x.go
go fix x.go
go vet x.go
go test x_test.go
Preliminary tests in test.bash.
Mainly testing things that the ordinary build does not.
I don't mind if the script doesn't run on Windows.
I expect that gccgo support is now broken, and I hope that
people will feel free to file issues and/or send CLs to fix it. :-)
Russ Cox [Thu, 1 Mar 2012 17:12:09 +0000 (12:12 -0500)]
go/build: replace FindTree, ScanDir, Tree, DirInfo with Import, Package
This is an API change, but one I have been promising would
happen when it was clear what the go command needed.
This is basically a complete replacement of what used to be here.
build.Tree is gone.
build.DirInfo is expanded and now called build.Package.
build.FindTree is now build.Import(package, srcDir, build.FindOnly).
The returned *Package contains information that FindTree returned,
but applicable only to a single package.
build.ScanDir is now build.ImportDir.
build.FindTree+build.ScanDir is now build.Import.
The new Import API allows specifying the source directory,
in order to resolve local imports (import "./foo") and also allows
scanning of packages outside of $GOPATH. They will come back
with less information in the Package, but they will still work.
The old go/build API exposed both too much and too little.
This API is much closer to what the go command needs,
and it works well enough in the other places where it is
used. Path is gone, so it can no longer be misused. (Fixes issue 2749.)
This CL updates clients of go/build other than the go command.
The go command changes are in a separate CL, to be submitted
at the same time.
Russ Cox [Wed, 29 Feb 2012 21:37:40 +0000 (16:37 -0500)]
path/filepath: steer people away from HasPrefix
The strikes against it are:
1. It does not take path boundaries into account.
2. It assumes that Windows==case-insensitive file system
and non-Windows==case-sensitive file system, neither of
which is always true.
3. Comparing ToLower against ToLower is not a correct
implementation of a case-insensitive string comparison.
4. If it returns true on Windows you still don't know how long
the matching prefix is in bytes, so you can't compute what
the suffix is.
R=golang-dev, r, dsymonds, r
CC=golang-dev
https://golang.org/cl/5712045
Brad Fitzpatrick [Wed, 29 Feb 2012 21:14:05 +0000 (13:14 -0800)]
time: skip a often-flaky test in short mode
In -test.short mode, skip measuring the upper bound of time
sleeps. The API only guarantees minimum bounds on sleeps,
anyway, so this isn't a bug we're ignoring as much as it is
simply observing bad builder virtualization and/or loaded
machines.
We keep the test in full mode where developers will
presumably be running on a lightly-loaded, native, fast
machine.
Russ Cox [Wed, 29 Feb 2012 20:54:06 +0000 (15:54 -0500)]
spec: apply method sets, embedding to all types, not just named types
When we first wrote the method set definition, we had long
discussions about whether method sets applied to all types
or just named types, and we (or at least I) concluded that it
didn't matter: the two were equivalent points of view, because
the only way to introduce a new method was to write a method
function, which requires a named receiver type.
However, the addition of embedded types changed this.
Embedding can introduce a method without writing an explicit
method function, as in:
var x struct {
sync.Mutex
}
var px *struct {
sync.Mutex
}
var _, _ sync.Locker = &x, px
The edits in this CL make clear that both &x and px satisfy
sync.Locker. Today, gccgo already works this way; 6g does not.
R=golang-dev, gri, iant, r
CC=golang-dev
https://golang.org/cl/5702062
Russ Cox [Wed, 29 Feb 2012 20:28:36 +0000 (15:28 -0500)]
gc: disallow absolute import paths
They are broken and hard to make work.
They have never worked: if you import "/tmp/x"
from "/home/rsc/p.c" then the compiler rewrites
this into import "/home/rsc/tmp/x", which is
clearly wrong.
Also we just disallowed the : character in import
paths, so import "c:/foo" is already not allowed.
Finally, in order to support absolute paths well in
a build tool we'd have to provide a mechanism to
instruct the compiler to resolve absolute imports
by looking in some other tree (where the binaries live)
and provide a mapping from absolute path to location
in that tree. This CL avoids adding that complexity.
This is not part of the language spec (and should not be),
so no spec change is needed.
Fixes #2919 I believe. (gets as far as sending a CONNECT
request to my little dummy logging proxy that doesn't actually
support CONNECT now.) Untested with a real CONNECT-supporting
proxy, though.
Robert Griesemer [Wed, 29 Feb 2012 16:38:31 +0000 (08:38 -0800)]
go/printer: replace multiline logic
This CL mostly deletes code.
Using existing position information is
just as good to determine if a new section
is needed; no need to track exact multi-
line information. Eliminates the need to
carry around a multiLine parameter with
practically every function.
Applied gofmt -w src misc resulting in only
a minor change to godoc.go. In return, a couple
of test cases are now formatted better.
Not Go1-required, but nice-to-have as it will
simplify fixes going forward.
Stefan Nilsson [Tue, 28 Feb 2012 22:38:58 +0000 (09:38 +1100)]
doc/style.css: make selectors more selective.
Change #foo to div#foo to avoid selecting headings
with anchor foo, such as <h1 id="foo">.
(A more extensive change would be to use class
selectors for styling. Perhaps this is better, since id:s
should be unique within a document according to
http://www.w3.org/TR/CSS2/selector.html#id-selectors)
Russ Cox [Tue, 28 Feb 2012 21:18:24 +0000 (16:18 -0500)]
runtime/pprof: support OS X CPU profiling
Work around profiling kernel bug with signal masks.
Still broken on 64-bit Snow Leopard kernel,
but I think we can ignore that one and let people
upgrade to Lion.
Add new trivial tools addr2line and objdump to take
the place of the GNU tools of the same name, since
those are not installed on OS X.
Adapt pprof to invoke 'go tool addr2line' and
'go tool objdump' if the system tools do not exist.
Shenghou Ma [Tue, 28 Feb 2012 18:22:28 +0000 (02:22 +0800)]
cmd/dist: force line-buffering stdout/stderr on Unix
If stdout and stderr are indeed the same file (not a tty), which is
often the case, fully-buffered stdout will make it harder to see
progresses, for example, ./make.bash 2>&1 | tee log
David Symonds [Tue, 28 Feb 2012 00:41:16 +0000 (11:41 +1100)]
encoding/json: drop MarshalForHTML; gofix calls to Marshal.
I've elected to omit escaping the output of Marshalers for now.
I haven't thought through the implications of that;
I suspect that double escaping might be the undoing of that idea.
Fixes #3127.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5694098