bytes.Equal is simpler to read and should also be faster because
of short-circuiting and assembly implementations.
Change generated automatically using:
gofmt -r 'bytes.Compare(a, b) == 0 -> bytes.Equal(a, b)'
gofmt -r 'bytes.Compare(a, b) != 0 -> !bytes.Equal(a, b)'
R=golang-dev, dave, adg, rsc
CC=golang-dev
https://golang.org/cl/7038051
This is a just a file move with no other changes
besides the manual import path adjustments in these
two files:
src/pkg/exp/gotype/gotype.go
src/pkg/exp/gotype/gotype_test.go
Note: The go/types API continues to be subject to
possibly significant changes until Go 1.1. Do not
rely on it being stable at this point.
R=adonovan
CC=golang-dev
https://golang.org/cl/7013049
The parser/resolver cannot accurately resolve
composite literal keys that are identifiers;
it needs type information.
Instead, try to resolve them but leave final
judgement to the type checker.
R=adonovan
CC=golang-dev
https://golang.org/cl/6994047
- added Context type for configuration of type checker
- type check all function and method bodies
- (partial) fixes to shift hinting (still not complete)
- revamped test harness - does not rely on specific position
representation anymore, just a standard (compiler) error
message
- lots of bug fixes
R=adonovan, rsc
CC=golang-dev
https://golang.org/cl/6948071
Motivations:
- Simpler UI. Previous API proved a bit awkward for practical purposes.
- Iter is often used in cases where one want to be able to bail out early.
The old implementaton had too much look-ahead to be efficient.
Disadvantages:
- ASCII performance is bad. This is unavoidable for tiny iterations.
Example is included to show how to work around this.
Description:
Iter now iterates per boundary/segment. It returns a slice of bytes that
either points to the input bytes, the internal decomposition strings,
or the small internal buffer that each iterator has. In many cases, copying
bytes is avoided.
The method Seek was added to support jumping around the input without
having to reinitialize.
Details:
- Table adjustments: some decompositions exist of multiple segments.
Decompositions that are of this type are now marked so that Iter can
handle them separately.
- The old iterator had a different next function for different normal forms
that was assigned to a function pointer called by Next.
The new iterator uses this mechanism to switch between different modes
for handling different type of input as well. This greatly improves
performance for Hangul and ASCII. It is also used for multi-segment
decompositions.
- input is now a struct of sting and []byte, instead of an interface.
This simplifies optimizing the ASCII case.
R=rsc
CC=golang-dev
https://golang.org/cl/6873072
the need to decompose characters for the majority of cases. This considerably
speeds up collation while increasing the table size minimally.
To detect non-normalized strings, rather than relying on exp/norm, the table
now includes CCC information. The inclusion of this information does not
increase table size.
DETAILS
- Raw collation elements are now a struct that includes the CCC, rather
than a slice of ints.
- Builder now ensures that NFD and NFC counterparts are included in the table.
This also fixes a bug for Korean which is responsible for most of the growth
of the table size.
- As there is no more normalization step, code should now handle both strings
and byte slices as input. Introduced source type to facilitate this.
NOTES
- This change does not handle normalization correctly entirely for contractions.
This causes a few failures with the regtest. table_test.go contains a few
uncommented tests that can be enabled once this is fixed. The easiest is to
fix this once we have the new norm.Iter.
- Removed a test cases in table_test that covers cases that are now guaranteed
to not exist.
R=rsc, mpvl
CC=golang-dev
https://golang.org/cl/6971044
Details:
- fixed variadic parameter passing and calls of the form f(g())
- fixed implementation of ^x for unsigned constants x
- fixed assignability of untyped booleans
- resolved a few TODOs, various minor fixes
- enabled many more tests (only 6 std packages don't typecheck)
R=rsc
CC=golang-dev
https://golang.org/cl/6930053
gotype can now handle much of the standard library.
- marked packages which have type checker issues
- this CL depends on CL 6846131
R=rsc
CC=golang-dev
https://golang.org/cl/6850130
Also:
- better handling of type assertions
- implemented built-in error type
- first cut at handling variadic function signatures
- several bug fixes
R=rsc, rogpeppe
CC=golang-dev
https://golang.org/cl/6846131
This CL defines the API. Implementation will come in follow-up CLs.
Update #1960.
R=bradfitz, dr.volker.dobler, rsc
CC=golang-dev
https://golang.org/cl/6849092
also:
- composite literal checking close to complete
- cleaned up parameter, method, field checking
- don't let panics escape type checker
- more TODOs eliminated
R=rsc
CC=golang-dev
https://golang.org/cl/6816083
The exp/types packages does not support the gccgo export data
format. At some point it should, but not yet.
R=gri, bradfitz, r, iant, dsymonds
CC=golang-dev
https://golang.org/cl/6854068
compare incrementally. Also modified collation API to be more high-level
by removing the need for an explicit buffer to be passed as an argument.
This considerably speeds up Compare and CompareString. This change also eliminates
the need to reinitialize the normalization buffer for each use of an iter. This
also significantly improves performance for Key and KeyString.
R=r, rsc
CC=golang-dev
https://golang.org/cl/6842050
There was an init race between
check_test.go:init
universe.go:def
use of Universe
and
universe.go:init
creation of Universe
The order in which init funcs are executed in a package is unspecified.
The test is not currently broken in the golang.org environment
because the go tool compiles the test with non-test sources before test sources,
but other environments may, say, sort the source files before compiling,
and thus trigger this race, causing a nil pointer panic.
R=gri
CC=golang-dev
https://golang.org/cl/6827076
Avoids problems with local declarations shadowing other names.
We write a more explicit form than the incoming program, so there
may be additional type annotations. For example:
int := "hello"
j := 2
would normally turn into
var int string = "hello"
var j int = 2
but the int variable shadows the int type in the second line.
This CL marks all local variables with a per-function sequence number,
so that this would instead be:
var int·1 string = "hello"
var j·2 int = 2
Fixes#4326.
R=ken2
CC=golang-dev
https://golang.org/cl/6816100
The only code change is in exp/gotype/gotype.go.
The latest reviewed version of exp/types is now
exp/types/staging.
First step toward replacing exp/types with
exp/types/staging.
R=iant
CC=golang-dev
https://golang.org/cl/6819071
- simplified assignment checking by removing duplicate code
- implemented field lookup (methods, structs, embedded fields)
- importing methods (not just parsing them)
- type-checking functions and methods
- typechecking more statements (inc/dec, select, return)
- tracing support for easier debugging
- handling nil more correctly (comparisons)
- initial support for [...]T{} arrays
- initial support for method expressions
- lots of bug fixes
All packages under pkg/go as well as pkg/exp/types typecheck
now with pkg/exp/gotype applied to them; i.e., a significant
amount of typechecking works now (several statements are not
implemented yet, but handling statements is almost trivial in
comparison with typechecking expressions).
R=rsc
CC=golang-dev
https://golang.org/cl/6768063
Tailorings are represented by removing and reinserting entries from a linked list.
After all tailorings are done, missing weights are computed and verified.
This implementation assumes that entries that are used in expansions are not
reinserted at a later point. This considerably simplifies the implementation.
R=r
CC=golang-dev
https://golang.org/cl/6739052
incremental comparisons. Instead, processing is now done directly on colElems.
As a result, the size of the weights array is now reduced by 75%.
Details:
- Primary value of type 1 colElem is shifted by 1 bit so that primaries
of all types can be compared without shifting.
- Quaternary values are now stored in the colElem itself. This is possible
as quaternary values other than 0 or maxQuaternary are only needed when other
values are ignored.
- Simplified processWeights by removing cases that are needed for ICU but not
for us (our CJK primary values fit in a single value).
R=r
CC=golang-dev
https://golang.org/cl/6817054
- Allow secondary values below the default value in second form. This is
to support before tags for secondary values, as used by Chinese.
- Eliminate collation elements that are guaranteed to be immaterial
after a weight increment.
R=r
CC=golang-dev
https://golang.org/cl/6739051
Since this patch changes the way complex literals are written
in export data, there are a few other glitches.
Fixes#4159.
R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6674047
Preparation for forthcoming CL 6624051: Will make it
easier to see if/what changes are incurred by it.
The alignment changes in this CL are due to CL 6610051
(fix to alignment heuristic) where it appears that an
old version of gofmt was run (and thus the correct
alignment updates were not done).
R=r
CC=golang-dev
https://golang.org/cl/6639044
- Changed Check signature to take function parameters for
more flexibility: Now a client can interrupt type checking
early (via panic in one the upcalls) once the desired
type information or number of errors is reached. Default
use is still simple.
- Cleaned up main typechecking loops. Now does not neglect
_ declarations anymore.
- Various other cleanups.
R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/6612049
This code has been reviewed before. The most significant
change is to check_test which now can handle more than
one error at the same error position (due to spurious
errors - should not happen in praxis once error handling
has been fine-tuned). This change makes check_test easier
to use during development.
R=rsc
CC=golang-dev
https://golang.org/cl/6584057
