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Commit Graph

3430 Commits

Author SHA1 Message Date
Robert Griesemer
b956928b06 go.tools/go/types: Fix for broken IsAssignableTo.
Was broken by CL 12378043.

- factored out some error checking code
- adjusted error positions

R=adonovan
TBR=adonovan
CC=golang-dev
https://golang.org/cl/12401043
2013-08-05 13:54:22 -07:00
David Symonds
1dce9cc7c7 go/types: exclude a couple of files from the stdlib test that don't parse on Windows.
They use stuff in syscall that doesn't exist on Windows, and this test does not
parse build tags (not that we make that easy) to automatically skip them.

R=golang-dev, r, gri
CC=golang-dev
https://golang.org/cl/12453043
2013-08-05 13:54:22 +10:00
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
Robert Griesemer
3209d6ad73 go.tools/go/types: fix interface vs interface type assertion
R=adonovan
CC=golang-dev
https://golang.org/cl/12378043
2013-08-02 14:37:19 -07:00
Robert Griesemer
e06b897351 go.tools/go/types: mark imported named types as 'complete'
Fixes "illegal cycle" error for: go tool vet -v pkg/unicode.

R=adonovan
CC=golang-dev
https://golang.org/cl/12355043
2013-08-02 09:33:37 -07:00
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
Alex Brainman
4ff367ac3c go.tools/ssa: fix windows build
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12320043
2013-08-02 16:25:49 +10:00
Robert Griesemer
4ceda807d5 go.tools/go/types: add mode to typecheck pkg-level decls only
This is useful for situations where one only cares about
exports, for instance (as in the goapi checker).

R=adonovan, bradfitz
CC=golang-dev
https://golang.org/cl/12292043
2013-08-01 16:37:56 -07:00
Alan Donovan
61a33ecd43 go.tools/go/types: fix: the type of a method value should not have a reciever
e.g.
type T int
func (T) f() {}
var t T
_ = t.f  // method value: should have signature "func()", no receiver

Also:
- ssa: add sanity check that helped diagnose this.

R=gri
CC=golang-dev
https://golang.org/cl/12283043
2013-08-01 15:38:41 -04:00
Alan Donovan
5cc33ea5a7 go.tools/ssa: cosmetic changes to ssa.Alloc.
Remove its 'name' field and treat it just like any other
ssa.Register: it gets a temp name like "t1".

Instead, give it a comment field holding its purpose, e.g, "x"
for a source-level vare, or "new", "slicelit", "complit" or
"varargs".

This improves usability of tools whose UI needs to refer to a
particular allocation site.

R=gri
CC=golang-dev
https://golang.org/cl/12273043
2013-08-01 14:06:10 -04:00
Andrew Gerrand
8d55039560 go.tools/cmd/godoc: fix typo
R=golang-dev
CC=golang-dev
https://golang.org/cl/12238043
2013-08-01 17:43:31 +10:00
Andrew Gerrand
37c18cdcf3 go.tools/cmd/godoc: start indexer in app engine mode
R=golang-dev
CC=golang-dev
https://golang.org/cl/12237044
2013-08-01 17:37:20 +10:00
Andrew Gerrand
0830cbddc9 go.talks/cmd/godoc: add jquery.js and style.css
Somehow missed these.

R=golang-dev
CC=golang-dev
https://golang.org/cl/12233043
2013-08-01 17:36:56 +10:00
Andrew Gerrand
0afeff2d4b go.tools/cmd/godoc: add godocs.js and playground.js from core repo
The originals will be removed.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12219043
2013-08-01 15:08:46 +10:00
Chris Manghane
a705311956 go.tools: add dashboard
Moving misc/dashboard to its new home. It will be deleted
(except for misc/dashboard/codereview) from its current home
if this is approved.

R=golang-dev, bradfitz, cmang, adg
CC=golang-dev
https://golang.org/cl/12180043
2013-08-01 13:23:51 +10:00
Robert Griesemer
caf3fc90ed go.tools/go/types: test against test/fixedbugs
Fixed several bugs:
- lhs blank identifier may be parenthesized: (_) = 0 is ok
- constant shift counts in non-constant shifts must be >= 0
- init functions must have a body

Classified currently failing tests:
- 10 classes of errors not checked at the moment

R=adonovan, r
CC=golang-dev
https://golang.org/cl/11952046
2013-07-31 20:08:18 -07:00
Folke Behrens
976d735966 go.tools/godoc: Fix jump-to-line in source view.
Remove the empty anchor element and add the line ID (Lnnn)
to the span element that contains the line number.
Fixes golang/go#5903.
Fixes golang/go#5977.

R=adg
CC=bradfitz, golang-dev
https://golang.org/cl/12189043
2013-08-01 11:52:25 +10:00
Alan Donovan
e7016436a6 go.tools/ssa: accommodate go/types changes to value,ok-mode inferred types.
The required changes were surprisingly minimal (I was hoping for a net
code deletion) because ssa is essentially doing its own type inference
for the three value,ok operators---and it continues to have to do so.
To see why, consider:

  var i interface{}; var ok bool
  i, ok := (map[string]string)(nil)[""]

Before, go/types inferred interface{} for the RHS of the assignment,
and now it infers (interface{}, bool), yet neither of these is what
ssa needs: it needs to know that the map values were strings so
that it can emit a lookup of the right type followed by a conversion
from string to interface{}.

TBR=gri
CC=golang-dev
https://golang.org/cl/11988044
2013-07-31 21:31:46 -04:00
Andrew Gerrand
508186a765 go.tools/cmd/godoc: copy templates from $GOROOT/lib/godoc
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12209043
2013-08-01 11:01:10 +10:00
Robert Griesemer
ae07aa6055 go.tools/go/types: return typed bool for comma-ok expressions
Also: determine default types for assignments of the form: _ = x .

R=adonovan
CC=golang-dev
https://golang.org/cl/12186043
2013-07-31 12:49:34 -07:00
Alan Donovan
323b856f4d go.tools/ssa: oops, missing file from CL 12147043.
(Should fix build; ssa tests remain broken from CL 12024046)

R=gri
TBR=gri
CC=golang-dev
https://golang.org/cl/12002046
2013-07-31 13:30:59 -04:00
Alan Donovan
c28bf6e069 go.tools/ssa: extend debug information to arbitrary ast.Exprs.
CanonicalPos was inadequate since many pairs of instruction share the same pos (e.g. Allocs and Phis).  Instead, we generalize the DebugRef instruction to associate not just Idents but Exprs with ssa.Values.

We no longer store any DebugRefs for constant expressions, to save space.  (The type and value of such expressions can be obtained by other means, at a cost in complexity.)

Function.ValueForExpr queries the DebugRef info to return the ssa.Value of a given Expr.

Added tests.

Also:
- the DebugInfo flag is now per package, not global.
   It must be set between Create and Build phases if desired.
- {Value,Instruction}.Pos() documentation updated: we still maintain
  this information in the instruction stream even in non-debug mode,
  but we make fewer claims about its invariants.
- Go and Defer instructions can now use their respective go/defer
   token positions (not the call's lparen), so they do.
- SelectState:
     Posn token.Pos indicates the <- position
     DebugNode ast.Expr is the send stmt or receive expr.
- In building SelectStmt, we introduce extra temporaries in debug
   mode to hold the result of the receive in 'case <-ch' even though
   this value isn't ordinarily needed.
- Use *SelectState (indirectly) since the struct is getting bigger.
- Document some missing instructions in doc.go.

R=gri
CC=golang-dev
https://golang.org/cl/12147043
2013-07-31 13:13:05 -04:00
Robert Griesemer
e5cfd92deb go.tools/go/types: record comma-ok results as tuples
- added corresponding api tests
- support tuple comparison with IsIdentical

This CL will require some adjustments to SSA.

R=adonovan
CC=golang-dev
https://golang.org/cl/12024046
2013-07-31 09:33:46 -07:00
Robert Griesemer
eae0511b70 go.tools/ssa/interp: fix build
fallthrough's are now checked - adjust
now illegal test.

TBR: adonovan

R=adonovan
CC=golang-dev
https://golang.org/cl/12041052
2013-07-30 20:28:18 -07:00
Robert Griesemer
1e79a68ff5 go.tools/go/types: check fallthrough statements
R=adonovan
CC=golang-dev
https://golang.org/cl/12041049
2013-07-30 16:00:57 -07:00
Brad Fitzpatrick
143d18d6c5 cmd/godoc: fix build
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/12127043
2013-07-30 13:42:50 -07:00
Alan Donovan
2f6855ad75 go.tools/ssa: avoid calling go/types.NewSelection, and eliminate it.
Also: s/LookupMethod/Method/

R=gri
CC=golang-dev
https://golang.org/cl/12058052
2013-07-30 16:36:58 -04:00
Robert Griesemer
4ae33302a4 go.tools/go/types: map keys must be comparable
R=adonovan
CC=golang-dev
https://golang.org/cl/12102044
2013-07-30 13:15:28 -07:00
Robert Griesemer
33d57bf48f go.tools/go/types: report identifier for methods with blank names
R=adonovan
CC=golang-dev
https://golang.org/cl/12123045
2013-07-30 12:47:40 -07:00
Alan Donovan
2a3a12930b go.tools/ssa: add test of SSA construction on $GOROOT/src/pkg/...
stdlib_test runs the builder (in sanity-checking mode) over
the Go standard library.  It also prints some stats about
the time and memory usage.

Also:
- importer.LoadPackage too (not just doImport) must consult
  the cache to avoid creating duplicate Package instances for
  the same import path when called serially from a test.
- importer: skip empty directories without an error.
- importer: print all errors, not just the first.
- visit.go: added AllFunctions utility for enumerating all
  Functions in a Program.
- ssa.MethodSet is not safe to expose from the package since
  it must be accessed under an (inaccessible) lock.  (!!!)
  This CL makes it unexported and restricts its use to the
  single function Program.LookupMethod().
- Program.MethodSet() has gone.
  Clients should instead iterate over the types.MethodSet
  and call LookupMethod.
- Package.DumpTo(): improved efficiency of methodset printing
  (by not creating wrappers) and accuracy (by showing * on
  receiver type only when necessary).
- Program.CreatePackage: documented precondition and added
  assertion.

R=gri
CC=golang-dev
https://golang.org/cl/12058048
2013-07-30 14:28:14 -04:00
Robert Griesemer
e7c7afbb1a go.tools/go/types: enable (previously broken) shift tests
R=adonovan
CC=golang-dev
https://golang.org/cl/12109044
2013-07-30 11:10:28 -07:00
Robert Griesemer
7a1a18283b go.tools/go/types: constant shifts always produce integers (bug fix)
R=adonovan
CC=golang-dev
https://golang.org/cl/12025044
2013-07-30 10:28:57 -07:00
Robert Griesemer
30c6d6350d go.tools/go/types: check type-checker against $GOROOT/test
R=adonovan
CC=golang-dev
https://golang.org/cl/12070044
2013-07-30 09:00:25 -07:00
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
Andrew Gerrand
253974207b go.tools/cmd/godoc: update appinit.go to use new godoc packages
Also move some common code from main.go to handlers.go, and
exclude remotesearch.go from the appengine build (it is only
relevant to the command line interface).

R=bradfitz, dsymonds
CC=golang-dev
https://golang.org/cl/12001049
2013-07-30 14:23:23 +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
Alan Donovan
0ba53b54bd go.tools/ssa: add debug info for x.f where Selection.Kind()==FieldVal.
Also:
- Implement Program.FuncValue for interface methods (+ test).
- go/types.Object.String(): don't package-qualify names unless
  they are package level objects---otherwise you see "main.x" for
  locals, struct fields, etc.
- go/types.Func.String(): don't assume Type() is *Signature;
  it could be *Builtin.

R=gri
CC=golang-dev
https://golang.org/cl/12058045
2013-07-29 17:10:11 -04:00
Robert Griesemer
90aa993096 go.tools/go/types: provide package for imported methods
Fixes golang/go#5815.

R=adonovan
CC=golang-dev
https://golang.org/cl/12048043
2013-07-29 13:22:46 -07:00
Robert Griesemer
bb34185432 go.tools/go/types: more implicit conversion tests
Also: Fixed grammar in selection.go comment.

R=adonovan
CC=golang-dev
https://golang.org/cl/11962043
2013-07-29 13:07:46 -07:00
Alan Donovan
fb0642f5fb go.tools/ssa: fix a package-level var initialization order bug.
buildDecl was visiting all decls in source order, but the spec
calls for visiting all vars and init() funcs in order, then
all remaining functions.  These two passes are now called
buildInit(), buildFuncDecl().

+ Test.

Also:
- Added workaround to gcimporter for Func with pkg==nil.
- Prog.concreteMethods has been merged into Pkg.values.
- Prog.concreteMethod() renamed declaredFunc().
- s/mfunc/obj/ (name cleanup from recent gri CL)

R=gri
CC=golang-dev
https://golang.org/cl/12030044
2013-07-29 14:24:09 -04:00
Robert Griesemer
64ea46e0bc go.tools/go/types: replace Method w/ Selection
A Method corresponds to a MethodVal Selection;
so the explicit Method object is not needed anymore.

- moved Selection code into separate file
- implemented Selection.String()
- improved and more consistent documentation

R=adonovan
CC=golang-dev
https://golang.org/cl/11950043
2013-07-26 22:27:48 -07:00
Alan Donovan
ba2241824d go.tools/ssa: use new Selections to simplify builder case discrimination.
Delete importer.PkgInfo.{ClassifySelector,IsPackageRef}.

R=gri
CC=golang-dev
https://golang.org/cl/11937045
2013-07-26 22:29:44 -04:00
Alan Donovan
ae8016313d go.tools/ssa: tests of method promotion and of interface conversion + bugfixes.
methprom.go covers method promotion.
Found bug: receiver() requires a following load under some
circumstances.

ifaceconv.go covers interface conversion.
Found bug: confusion about infallible and fallible conversions
led to use of TypeAssert in emitConv, which should never fail.
Changed semantics of ChangeInterface to make it infallible
and made some simplifications.

Also in this CL:
- SelectState.Pos now records the position of the
  the '<-' operator for sends/receives done by a Select.

R=gri
CC=golang-dev
https://golang.org/cl/11931044
2013-07-26 21:49:27 -04:00
Robert Griesemer
4ea4ce9e03 go.tools/go/types: added missing implicit conversion checks
R=adonovan, r
CC=golang-dev
https://golang.org/cl/11934047
2013-07-26 18:21:14 -07:00
Robert Griesemer
41fb587948 go.tools/go/types: implement Info.Selections
Should make it easier for clients to deal with
selector expressions.

Removed Field type: The respective information
is now reported in Info.Selections.

R=adonovan
CC=golang-dev
https://golang.org/cl/11942043
2013-07-26 13:55:14 -07:00
Alan Donovan
118786e3d6 go.tools/ssa: combine CallCommon.{Recv,Func} as Value.
Also:
- add types.Func.FullName() (e.g. "fmt.Println", "(main.S).f")
- remove rogue print stmt.
- fix bad docstrings.

R=gri
CC=golang-dev
https://golang.org/cl/11936044
2013-07-26 14:06:26 -04:00
Robert Griesemer
bf6a1e674e go.tools/go/types: unsafe.Offsetof must deref named pointers to structs
R=adonovan
CC=golang-dev
https://golang.org/cl/11889043
2013-07-26 09:53:47 -07:00