Package iterable has outlived its utility.
It is an interesting demonstration, but it encourages
people to use iteration over channels where simple
iteration over array indices or a linked list would be
cheaper, simpler, and have fewer races.
R=dsymonds, r
CC=golang-dev
https://golang.org/cl/2436041
- change ast.Ident back to contain the name and adjust all dependent code
- identifier object information will be added again through an optional
typechecker phase (in the works).
- remove tracking of scopes in parser - it's easier to do this in a separate
phase (in the works)
- in godoc, generate popup info table directly instead of through a formatter
for simpler data flow (at the expense of a little bit more code)
Runs all tests.
As a result of this change, the currently shown popup information
(const, var, type, func, followed by identifier name) will not be
shown anymore temporarily.
R=rsc
CC=golang-dev
https://golang.org/cl/1994041
Rect types.
The actual image representation is unchanged. A future change will
replace the {[][]color} with {[]color, stride int, r Rectangle} and
possibly a clip region.
The draw.Color, draw.Point and draw.Rect types will be removed in a
future change. Trying to do it in this one polluted the diff with
trivia.
R=r, rsc
CC=golang-dev
https://golang.org/cl/1918047
Also in this CL:
* Removed util.go, as its functionality is in big
* Removed some semicolons from the code generated by gen.go
* Added a generate target to Makefile
* Removed an outdated TODO from value.go
R=gri
CC=golang-dev
https://golang.org/cl/1780042
Time (us) to draw a 200x200 src onto an image.RGBA dst with the Over
operator. Each case was measured three separate times, and the sorted
times are reported.
Fill case (where src is an image.ColorImage):
Before:
7438, 7511, 7526
After:
3073, 3087, 3102
Copy case (where src is an image.RGBA):
Before:
9506, 9510, 9563
After:
5262, 5300, 5344
R=rsc
CC=golang-dev
https://golang.org/cl/1532041
Fix Rectangle.Clip.
It could return a non-canonical rectangle if its arguments
did not overlap.
e.g. Rect(0, 0, 10, 10).Clip(Rect(0, 20, 10, 30)) -> Rect(0, 20, 10, 10)
R=rsc, r
CC=golang-dev, golang-dev
https://golang.org/cl/1290041
On my laptop, time to prepare and write 800x600 pixels over the
socket falls from 125-ish ms to 80-ish ms.
Thanks to Roger Peppe for the suggestion.
R=r
CC=golang-dev
https://golang.org/cl/1228044
Time to draw.Draw a 200x200 image fell from 18.4ms (and 1 malloc) to
5.6ms (and 0 mallocs). It's still relatively slow since it assumes
nothing about the src or mask images, but it does remove the malloc.
There are existing faster, more specialized paths for copies, fills
and image glyph masks.
Also added a "compare to a slow but obviously correct implementation"
check to draw_test.go.
R=rsc, r
CC=golang-dev
https://golang.org/cl/1223044
Timings (as for change 1122043) go from 49ms to 48ms ish. It's
mostly lost in the noise, but it probably doesn't hurt.
R=r
CC=golang-dev
https://golang.org/cl/1179041
To draw.Draw a 32x32 image.Alpha 10000 times,
Before: 633ms with 10000 mallocs
After: 49ms with 0 mallocs
These times are just blitting an image.Alpha, and do not include
rasterizing a glyph's vector contours to an image.Alpha.
The "generic" test case in draw_test.go tests this fast path.
R=rsc
CC=golang-dev
https://golang.org/cl/1122043
note that sortmain.go has been run through hg gofmt;
only the formatting of the day initializers changed.
i'm happy to revert that formatting if you'd prefer.
stop on error in doc/progs/run
R=r
CC=golang-dev
https://golang.org/cl/850041
- only manual changes are in src/pkg/go/printer/nodes.go
- use a heuristic to determine "outliers" such that not entire composites are
forced to align with them
- improves several places that were not unligned before due too simple heuristic
- unalignes some cases that contain "outliers"
- gofmt -w src misc
Fixes#644.
R=rsc, r
CC=golang-dev
https://golang.org/cl/241041
- gofmt -w src misc
- improves several lists and fixes minor degradation introduced
with the fix for issue 628
- removed some dead code (stringList)
R=rsc
CC=golang-dev
https://golang.org/cl/223058
- applied gofmt to src and misc
Note: This fix improved formatting of src/pkg/math/all_test.go but leads
to a degradation in src/pkg/exp/4s/xs.go. The latter happened to "work"
before accidentally. Fixing the alignment in that case in general will
be a separate CL.
Fixes#628.
R=rsc
CC=golang-dev
https://golang.org/cl/223054
- always include position information about opening/closing parens/braces
- replace uses of []*ast.Field with *ast.FieldList
Fixes#473.
R=rsc
CC=golang-dev
https://golang.org/cl/223043
- go/ast: removed StringList (not needed anymore)
- go/ast: changed import path and field list tag to a single string
- updated all dependencies
R=rsc
CC=golang-dev
https://golang.org/cl/217056
Averaged times (in microseconds) for drawing an 800x600 rectangle
are listed below. The summary is: around a 100x improvement.
draw.Draw call times were typically linear in the number of pixels
touched (i.e. drawing an 800x600 rectangle took 100x as much time as
drawing an 80x60 rectangle).
Before this change, there was only the general-but-slow code path.
When drawing any src with a 50%-opaque mask: 237300 us
When drawing any src with a nil mask: 50100 us
After this change, the 50%-opaque mask case is unchanged.
For an *image.RGBA dst and nil mask and...
...a uniform color (i.e. an image.ColorImage) src: 282 us
...another *image.RGBA src: 615 us.
For the curious, an intermediate implementation detected the special
cases but used simple nested for loops instead of the built-in copy
function. The respective times (compared to 282 and 615 for the
final implementation, or 50100 for the original) were 3110 and 3573.
Times were measured with 8g/8l on my laptop. I haven't tried gccgo
or other architectures.
R=r, rsc
CC=golang-dev
https://golang.org/cl/201048
- provide scope to parse functions; if non-nil, parser uses the scope
to declare and lookup identifiers
- resolve forward references where possible
R=rsc
CC=golang-dev
https://golang.org/cl/194098
- Identifiers refer now to the language entity (Object)
that they denote. At the moment this is at best an
approximation.
- Initial data structures for language entities (Objects)
and expression types (Type) independent of the actual
type notations.
- Initial support for declaring and looking up identifiers.
- Updated various dependent files and added support functions.
- Extensively tested to avoid breakage. This is an AST change.
R=rsc
CC=golang-dev, rog
https://golang.org/cl/189080
Manual changes to the following files:
src/pkg/Makefile
src/pkg/exp/vector/Makefile (now: src/pkg/container/vector/Makefile)
R=rsc, r
CC=golang-dev
https://golang.org/cl/181041
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
2nd set of files.
R=rsc
CC=golang-dev
https://golang.org/cl/179067
This change removes the necessity to have GOBIN in $PATH,
and also doesn't assume that the build is being run from
$GOROOT/src. This is a minimal set of necessary changes
to get Go to build happily from the FreeBSD ports
collection.
R=rsc
CC=golang-dev
https://golang.org/cl/171044
- oldparser parse old syntax (required semicolons)
- oldprinter print old syntax (required semicolons)
By default, these flags are enabled for now.
Setting -oldparser=false has no effect until go/parser is changed
to accept the new syntax.
Enabled exp/parser in Makefile; update dependent exp/eval.
R=rsc
https://golang.org/cl/174051
this is the exact same thing issue #115 is about. fix makefiles to use relative
path to work in the case we have whitespaces as part of GOROOT.
R=rsc
https://golang.org/cl/162055
This provides an experimental X11 backend for the exp/draw interface.
It does not aim to provide a complete implementation of the X11 client protocol.
This works for me (Ubuntu Hardy 8.04, GOARCH=386). Your mileage my vary.
R=r, rsc, r1
CC=golang-dev
https://golang.org/cl/156109
the bash scripts and makefiles for building go didn't take into account
the fact $GOROOT / $GOBIN could both be directories containing whitespaces,
and was not possible to build it in such a situation.
this commit adjusts the various makefiles/scripts to make it aware of that
possibility, and now it builds successfully when using a path with whitespaces
as well.
Fixes#115.
R=rsc, dsymonds1
https://golang.org/cl/157067
Meant as illustration of the Go pattern that is using
goroutines and channels to handle exceptional situations.
Note: There is no need for "Finally" since the
"try block" (the function f supplied to Try)
cannot do a Smalltalk-style non-local return
and terminate the function surrounding Try.
Replaces CL 157083.
R=r, rsc
https://golang.org/cl/157087
- enabled for function declarations (not just function literals)
- applied gofmt -w $GOROOT/src
(look for instance at src/pkg/debug/elf/elf.go)
R=r, rsc
CC=go-dev
http://go/go-review/1026006
