Anonymous field names are emitted as "" in the export data
since the actual name can be reconstructed easily from the
field's type name. But "" names are not exported names and
thus the respective qualified name emits complete package
information even if the actual field name is exported. Fix
the package upon import.
R=adonovan
CC=golang-codereviews
https://golang.org/cl/42090044
The package of a struct field is independent of the type of the
struct field - the old code was technically not correct. That said,
it does not seem possible (or very difficult) to create a test case
because for exported anonymous fields that field package doesn't matter
(it's not needed for name identity), and non-exported anonymous fields
cannot be accessed from an imported package.
R=adonovan
CC=golang-codereviews
https://golang.org/cl/47560043
Also: Provide GcCompatibilityMode for printing types
(intended for testing with gc-generated export data
only).
(TBR adonovan)
R=adonovan
TBR=adonovan
CC=golang-codereviews
https://golang.org/cl/44780043
By using a simple (graph-based) serialization algorithm
and binary encoding, a significantly more compact export
data format is achieved than what the current compilers
use. Furthermore, the exporter and importer are completely
symmetric algorithms that are compact, and much easier to
change/expand.
R=adonovan
CC=golang-dev
https://golang.org/cl/42960043
Obviously in that mode, we can't correctly diagnose such
errors, so we shouldn't attempt it (and emit false positives).
R=gri
CC=golang-dev
https://golang.org/cl/41080043
This test generates a program that declares the constant
elements of an n*n Hilbert matrix, its inverse, and the
constant elements of the explicit product of the two.
The product should be the identity matrix; that check is
also expressed as a constant expression. Type-checking
verifies that the product is indeed the identity matrix
by asserting the result of the identity check (using the
assert built-in which is available for type-check tests).
The test is run for n = 5. Other values can be tested via
the -H flag, say: go test -run=Hilbert -H=100
The generated program can be written to a file for testing
the constant arithmetic of a compiler: go test -out=test.go
Because of the mathematically precise constant arithmetic
of go/types, this test should always succeed and is only
limited by the size of the matrix. It does run successfully
from n = 0 to values larger than 100.
The Hilbert matrix is famous for being ill-conditioned and
thus exposes arithmetic imprecision very quickly. The gc
compiler only produces a correct result for n = 0 (trivially),
and n = 1 at the moment.
R=adonovan, rsc
CC=golang-dev
https://golang.org/cl/35840043
The benchmarks don't permit clear-cut apples-to-apples
comparisons since they depend on the very source code
they are testing. But they do give an indication of
the approximate performance - as a sanity test.
Using 3 different code bases makes it apparent that
there's some difference in performance per code base;
i.e., the lines/s speed varies pretty strongly. This
may be due to setup costs, or other issues. We should
investigate eventually.
R=adonovan
CC=golang-dev
https://golang.org/cl/30650043
Also: Use defer to make sure scopes are always closed
even in case of early exits via bailout (and don't cause
an imbalanced scope error in debug mode).
R=adonovan, gri
CC=golang-dev
https://golang.org/cl/29300043
- consolidate them in (expr|type)string[_test].go
- support for printing all ast.Expr
- fix printing of type: chan (<-chan int) (parentheses)
- more consistent names, comments, and exports
R=adonovan
CC=golang-dev
https://golang.org/cl/28680043
These are variants of Type.String(), Object.String() that
accept a 'from *Package' argument. If provided, package
qualification is omitted when printing named types belonging
to that package.
This is useful for UIs where a package is implied by context
e.g. ssadump disassembly, oracle output.
+ Test.
R=gri, gri, gordon.klaus
CC=golang-dev
https://golang.org/cl/22190048
- fixed a couple of TODOs
- various cleanups along the way
- adjusted clients
Once submitted, clients of go/types that don't explicitly
specify Config.Import will need to add the extra import:
import _ "code.google.com/p/go.tools/go/gcimporter"
to install the default (gc) importer in go/types.
R=adonovan, gri
CC=golang-dev
https://golang.org/cl/26390043
Depending on the context, printing only the package name can
be ambiguous or even incorrect since it is valid only within
the environment of a given file's import specs.
(The standard library packages are mostly unique in their last
segment, but this is not the case for proprietary repos.)
R=gri, gri
CC=golang-dev
https://golang.org/cl/26300043
Robert Griesemer
Alan Donovan
Peter Collingbourne
Richard Musiol