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Commit Graph

57 Commits

Author SHA1 Message Date
Alan Donovan
ced954c167 go.tools/go/types: split Info.Objects map into Defs and Uses.
An identifier X in anonymous struct field struct{X} is both a
definition of a field (*Var) and reference to a type
(*TypeName).  Now that we have split the map, we can capture
both of these aspects.

Interestingly, every client but one was going to extra effort
to iterate over just the uses or just the defs; this
simplifies them.

Also, fix two bug related to tagless switches:
- An entry was being recorded in the Object map for a piece of
  synthetic syntax.
- The "true" identifier was being looked up in the current scope,
  which allowed perverse users to locally redefine it.  Now
  we use the bool (not untyped boolean) constant true, per the
  consequent clarification of the spec (issue 7404).

+ tests.

Fixes golang/go#7276

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/68270044
2014-02-27 13:21:59 -05:00
Rob Pike
ee3eeefaa3 cmd/vet: check for nil result set in isStringer
Fixes golang/go#7149.

LGTM=gri
R=golang-codereviews, gri
CC=golang-codereviews
https://golang.org/cl/68260044
2014-02-24 11:39:42 -08:00
Rob Pike
cde4d316d2 go.tools/cmd/vet: docs: explain the command line interface better
How it handles packages vs. directories vs. files was not explained.

LGTM=rsc
R=golang-codereviews, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/67150043
2014-02-24 10:44:02 -08:00
David du Colombier
374c600cae go.tools/cmd/vet: disable TestVet on Plan 9
LGTM=minux.ma
R=golang-codereviews, minux.ma
CC=golang-codereviews
https://golang.org/cl/64410043
2014-02-20 21:43:24 +01:00
Andrew Gerrand
47596b4b81 go.tools/cmd/vet: add stable checks to doc.go
These are the simplest possible descriptions of each command.
They may be fleshed out later.

Fixes golang/go#7298.

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/61480044
2014-02-13 11:05:01 +11:00
Alan Donovan
1f29e74bfa go.tools/go/types: remove Type.MethodSet() method.
Method-set caching is now performed externally using a MethodSetCache (if desired), not by the Types themselves.

This a minor deoptimization due to the extra maps, but avoids a situation in which method-sets are computed and frozen prematurely. (See b/7114)

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/61430045
2014-02-11 16:49:27 -05:00
Robert Griesemer
20efc5ba73 go.tools/go/types: use init cycle tracking for all const and var cycles
Also rename types.Assertable -> types.AssertableTo per adonovan.

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://golang.org/cl/59680044
2014-02-03 16:02:56 -08:00
Robert Griesemer
4dcaee97b2 go.tools/cmd/vet: use new Assertable predicate (fix build)
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/59210045
2014-02-03 11:39:10 -08:00
Alan Donovan
64ec206bfd go.tools/go/types: combine Info.{Types,Values} maps.
This results in significant improvement to type-checking time:
it reduces by 4% the entire running time of ssa/stdlib_test
(GOMAXPROCS=8, n=7).

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/57770043
2014-01-28 16:46:24 -05:00
Robert Griesemer
ebfa4efbc4 go.tools/go/types: cleanup: more consistent exported predicate names
Renamed predicates:
IsIdentical -> Identical
IsAssignableTo -> AssignableTo
Signature.IsVariadic -> Signature.Variadic
Object.IsExported -> Object.Exported

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://golang.org/cl/53370043
2014-01-28 10:57:56 -08:00
Rob Pike
bae6bf6180 go.tools/cmd/vet: improve error message for build tag problems
Fixes golang/go#6979.

R=golang-dev, dave, iant
CC=golang-dev
https://golang.org/cl/37720048
2013-12-18 16:06:56 -08:00
Josh Bleecher Snyder
866b24e166 cmd/vet: check for sync types being copied during function calls
Using a type containing a sync type directly
in a function call (whether as a receiver,
a param, or a return value) is an easy way
to accidentally copy a lock or other sync primitive.
Check for it.

The test as implemented does not provide 100%
coverage; see the discussion near the bottom of
testdata/copylock.go for shortcomings.

Fixes golang/go#6729.

R=adg, r, dsymonds
CC=golang-dev
https://golang.org/cl/23420043
2013-12-09 20:14:28 -08:00
Robert Griesemer
27563ff576 go.tools/go/types: move gcimporter to its own package
- 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
2013-11-14 14:11:43 -08:00
Rob Pike
2afbb1cd5f go.tools/cmd/vet: handle symbolic TEXT annotations
The symbolic names such as NOSPLIT for annotations on the TEXT
directive appeared after vet started checking .s files. This CL tweaks
the regular expression to allow CAPITALS and the symbols | and +
as well as digits in that field, and interprets NOSPLIT as equivalent
to 7 in that field. All magic.

Fixes golang/go#6695

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/18700044
2013-11-01 11:49:11 -07:00
Robert Griesemer
f50f6c858a go.tools/go/types: nil is not a constant + misc. cleanups
- removed support for nil constants from go/exact
- instead define a singleton Nil Object (the nil _value_)
- in assignments, follow more closely spec wording
  (pending spec CL 14415043)
- removed use of goto in checker.unary
- cleanup around handling of isRepresentable for
  constants, with better error messages
- fix missing checks in checker.convertUntyped
- added isTyped (== !isUntyped) and isInterface predicates
- fixed hasNil predicate: unsafe.Pointer also has nil
- adjusted ssa per adonovan
- implememted types.Implements (wrapper arounfd types.MissingMethod)
- use types.Implements in vet (and fix a bug)

R=adonovan, r
CC=golang-dev
https://golang.org/cl/14438052
2013-10-09 14:17:25 -07:00
Dominik Honnef
d5044c7ed2 go.tools/cmd/vet: Update canonical method check for new xml.Marshaler/Unmarshaler interfaces
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/14484043
2013-10-07 11:10:36 -07:00
Rob Pike
6ad0d283e1 go.tools/cmd/vet: handle recursive structs and slices.
Fixes golang/go#6309

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13386046
2013-09-18 12:57:59 +10:00
Rob Pike
ece05f910e go.tools/cmd/vet: update for fmt handling %b for complex numbers
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/13490048
2013-09-16 08:18:27 +10:00
Rob Pike
bc5f637240 go.tools/cmd/vet: assume implementations of fmt.Formatter print just fine
Update golang/go#6212
See issue 6259.
When that is resolved, we can do a better job. Until then, we just see if the
type has a method called Format and, if so, assume it's a Formatter and so
there's nothing to check.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13267043
2013-08-28 11:24:43 +10:00
Andrew Gerrand
890e4c0731 go.tools/cmd/vet: exclude "%#v" from recursive stringer check
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13163043
2013-08-22 11:44:39 +10:00
Andrew Gerrand
f6a22edf66 go.tools/cmd/vet: relax recursive stringer check
For the pointer receiver x, fmt.Sprintf(*x) does not invoke x's String
method.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12971045
2013-08-22 11:29:44 +10:00
Andrew Gerrand
de72360261 go.tools/cmd/vet: fix build of testdata package
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13144043
2013-08-21 11:08:25 +10:00
Andrew Gerrand
61d86e98d5 go.tools/cmd/vet: check for recursive stringers
Fixes golang/go#6129.

R=r
CC=golang-dev
https://golang.org/cl/12936046
2013-08-21 11:07:53 +10:00
Brad Fitzpatrick
3e29592dba cmd/vet: move whitelist to its own package
App Engine needs the whitelist file and it's cleaner if it's
in its own package where it can be imported directly, without
pushing composite.go through a pile of sed.

R=dsymonds, r
CC=golang-dev
https://golang.org/cl/12746045
2013-08-20 15:39:49 -07:00
Andrew Gerrand
74ecc2c09b go.tools/cmd/vet: detect useless function comparisons
Also fix bug in types.go discovered by this check.

Fixes golang/go#5347.

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/13102043
2013-08-20 16:11:01 +10:00
David Symonds
a7c698b070 undo CL 12811043 / 44387735a77d
Not the right thing to do.
Fixes golang/go#6148.

««« original CL description
cmd/vet: flag redundant invocations of String and Error methods in printf calls.

R=r
CC=golang-dev
https://golang.org/cl/12811043
»»»

R=r
CC=golang-dev
https://golang.org/cl/13034043
2013-08-19 11:12:44 +10:00
David Symonds
c0b6badc83 cmd/vet: flag redundant invocations of String and Error methods in printf calls.
R=r
CC=golang-dev
https://golang.org/cl/12811043
2013-08-13 13:47:58 +10:00
Robert Griesemer
45e3d57f32 go.tools/cmd/vet: enable test (fix build)
R=r
TBR=r
CC=golang-dev
https://golang.org/cl/12482043
2013-08-05 14:02:52 -07:00
Rob Pike
c333e7a7b6 go.tools/cmd/vet: fix go.tools build
TBR: gri

I cannot create an issue on the tracker for some reason, so here it is:
go vet contains this snippet:

        if types.IsAssignableTo(typ, errorType) || types.IsAssignableTo(typ, stringerType) {

It's getting the wrong answer: It claims

interface {
        f()
}

or even

interface {
        f() float64
}

matches the Error and Stringer interfaces. Both of them.  This causes a test failure:
$ go test code.google.com/p/go.tools/cmd/vet
BUG: errchk: testdata/print.go:124: missing expected error: '"for printf verb %s of wrong type"'
$
This worked until very recently.

R=gri
CC=golang-dev
https://golang.org/cl/12398043
2013-08-03 15:56:56 +10:00
Rob Pike
aecec2f502 go.tools/cmd/vet: the composite test is about keys, not tags
Fix the confusion.
No semantic change, just some renamings.

Fixes golang/go#6017.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/12394043
2013-08-03 12:19:59 +10:00
Rob Pike
797431e1a3 go.tools/cmd/vet: fix printf analysis for structs.
The old code only got it right for Stringers (etc.) and a few other simple cases.
But the rule used by fmt.Printf for non-Stringers is that pointers to structs
print as pointers, the rest must satisfy the format verb element-wise.
Thus for example
        struct {a int, b []byte}
prints with %d and %q (sic) but not %g.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/12340043
2013-08-02 22:52:38 +10:00
Rob Pike
2a8b9debdd go.tools/cmd/vet: don't complain about empty interface values in printf
R=dsymonds
CC=golang-dev
https://golang.org/cl/12005047
2013-07-30 15:51:35 +10:00
Rob Pike
5ba51116ee go.tools/cmd/vet: treat arrays like slices in the printf checks.
The analysis for types.Array was just missing. It's the same as a slice,
but we can't share code easily because the types differ, so we just dup it.

R=dsymonds
CC=golang-dev
https://golang.org/cl/12041045
2013-07-30 14:00:52 +10:00
David Symonds
40baf75587 cmd/vet: Avoid warning on pointer to invalid types.
TBR=r
CC=golang-dev
https://golang.org/cl/12038051
2013-07-30 13:41:07 +10:00
David Symonds
573374c476 cmd/vet: Fix handling of non-Stringer arguments.
First, %v and %T accept any arguments, so they should never warn.
Second, pointer types were not handled in matchArgType.
Third, the default response for matchArgType should be false.

R=r
CC=adonovan, golang-dev
https://golang.org/cl/12038050
2013-07-30 13:15:31 +10:00
David Symonds
75919c8eee cmd/vet: avoid panic if no valid inputs are found.
I'd like to make vet work as a filter, but passing /dev/stdin as a
command line argument doesn't work. This at least makes it not panic.

R=r
CC=golang-dev
https://golang.org/cl/11521045
2013-07-22 12:43:11 +10:00
Robert Griesemer
40a278e5ee go.tools/go/types: rename Context -> Config (more apt name)
Also: Various minor cleanups.

R=adonovan, r
CC=golang-dev
https://golang.org/cl/11445044
2013-07-18 17:07:44 -07:00
Robert Griesemer
9460d02473 go.tools/cmd/vet: fix error message
R=r, dsymonds, bradfitz
CC=golang-dev
https://golang.org/cl/11552043
2013-07-18 16:56:01 -07:00
Robert Griesemer
6d85cc17dd go.tools/go/types: request type Info via maps instead of callbacks
Allmost all uses of go/types that wanted the type
information computed, installed callback functions
that stored the information in maps. Most of the
time this is the only thing that could be done because
there is no guarantee that types are completely set
up before the end of type-checking.

This CL removes the respective Context callbacks in favor
of corresponding maps that collect the desired information
on demand, grouped together in an optional Info struct.

R=adonovan
CC=golang-dev
https://golang.org/cl/11530044
2013-07-18 13:09:03 -07:00
Alan Donovan
25f3e0fbde go.tools/cmd/vet: improvements to static checking of printf calls.
Details:
- added support for complex numbers as distinct from floats:
  %[efg] allows complex; %b does not.
- %p: only Signature, Map, Chan, Slice, unsafe.Pointer allowed.
- %s: allow []byte.
- allow a verb to match map[K]V and []T if it matches K/V/T,
  e.g. %d now matches []int.  i.e. matching is recursive.
- use go/types' constant folding.  literal() is gone.
- group cases together.

Added tests.

R=gri, r
CC=golang-dev
https://golang.org/cl/10895043
2013-07-15 18:37:49 -04:00
Rob Pike
b042505490 go.tools/cmd/vet: use types.Eval to simplify some checking.
Depends on CL 10748044

R=gri
CC=golang-dev
https://golang.org/cl/11206043
2013-07-13 07:52:00 +10:00
Andrew Gerrand
98e8131132 go.tools/cmd/vet: add image.Uniform to untagged literal white list
R=nigeltao
CC=golang-dev
https://golang.org/cl/10817043
2013-07-01 12:42:08 +10:00
Rob Pike
6740bb0838 go.tools/cmd/vet: delete the word "only" from a warning
No semantic change.

R=dsymonds, rsc
CC=golang-dev
https://golang.org/cl/10516043
2013-06-24 12:56:35 -07:00
Rob Pike
331c428e76 go.tools/cmd/vet: add check for shadowed variables
Experimental feature. It's too noisy yet to be enabled by default,
so it must be enabled explicitly by
        go tool vet -shadow *.go
or
        go tool vet -shadow directory
(The go command does not know about the -shadow flag.)

Fixes golang/go#5634.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/10409047
2013-06-21 11:27:53 -07:00
Rob Pike
86c0ff156c go.tools/cmd/vet: set the package name unconditionally
A better fix than the one in CL 10400044

R=gri
CC=golang-dev
https://golang.org/cl/10376044
2013-06-18 14:12:51 -07:00
Rob Pike
ce82fb0e23 go.tools/cmd/vet: use directory for pkg.path if path is "."
Before:
        math/big/nat_test.go:688: arg r for printf verb %s of wrong type: ..Word
After:
        math/big/nat_test.go:688: arg r for printf verb %s of wrong type: big.Word

R=gri
CC=golang-dev
https://golang.org/cl/10400044
2013-06-18 14:02:01 -07:00
Rob Pike
df787c2073 go.tools/cmd/vet: check for missing printf verb
A trailing % resulted in a bad error message.
Also clean up a couple of dregs left over from the
refactoring to add indexed formats.

R=dsymonds
CC=golang-dev
https://golang.org/cl/10336044
2013-06-18 08:21:06 -07:00
Rob Pike
3402cf10ab go.tools/cmd/vet: verify printf for String and Error implementers
Fixes golang/go#5624.

R=adonovan
CC=gobot, golang-dev, gri
https://golang.org/cl/9657048
2013-06-06 16:05:14 -07:00
Rob Pike
838e9a8987 go.tools/cmd/vet: check indexed arguments in printf
Refactor the printf parser to be easier to understand.

R=gri
CC=golang-dev
https://golang.org/cl/9909043
2013-05-31 16:31:01 -04:00
Rob Pike
291b2c84b6 go.tools/cmd/vet: prepare print format checker for indexed arguments
Rewrite the checker to be more flexible and better documented, being
more explicit about parsed format vs. checked arguments.
No attempt yet to do check indexed formats; this just paves the way.
All tests still pass.

R=gri
CC=golang-dev
https://golang.org/cl/9881044
2013-05-30 14:26:22 -04:00