Commit Graph

22 Commits

Author SHA1 Message Date
Alan Donovan 8e53eb937b go/ssa: support custom TestMain functions in test packages
Supporting user-defined TestMain functions requires that we generate a
"testmain" package for each testable package, rather than a single one
for the entire program.  This entails these API changes:

1. (*ssa.Program).{CreateTestMainPackage,FindTests} both now
   accept only a single package.  Existing clients that pass them
   multiple packages must call them from a loop.

2. (*ssa.Program).FindTests returns an additional result, the the
   optional TestMain *ssa.Function.  Existing clients may discard it.

Also:
- Test the new logic using the SSA interpreter
- add ssautil.MainPackages helper
- callgraph: allow multiple main packages, and analyze them all
- ssadump -run: allow multiple main/test packages, and run each in a new interpreter
- minor simplifications to some callers (e.g. guru)

Fixes golang/go#9553

Change-Id: Ia7de9bd27448fb08b8d172ba5cdbcf37a762b7a0
Reviewed-on: https://go-review.googlesource.com/25102
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-10-19 17:50:59 +00:00
Alan Donovan 542ffc7e75 tools: switch to standard go/types at tip
A few files have been forked and tagged "go1.5,!go1.6" to work around
minor API changes between the two types packages:
- constant.Value.String() in oracle/describe.go and its tests;
- constant.ToInt must now be called before constant.Int64Val.
- types.Config{Importer: importer.Default()} in a number of places
- go/types/typeutil/import_test.go uses lowercase names to avoid 'import "C"'.

Files in go/types/typesutil, missing from my previous CL, have been
tagged !go1.5; these files will be deleted in February.

All affected packages were tested using 1.4.1, 1.5, and ~1.6 (tip).

Change-Id: Iec7fd370e1434508149b378438fb37f65b8d2ba8
Reviewed-on: https://go-review.googlesource.com/18207
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-01-06 22:15:26 +00:00
Alan Donovan 2477c0d578 x/tools/...: fork and tag !1.5 all files that use go/types et al
This change will ensure that the tree continues to work with go1.4.1.

All files continue to depend on golang.org/x/tools/go/types, but in a
follow-up change, I will switch the primary files to depend on the
standard go/types package.  Another (smaller) set of files will be
forked and tagged, this time !1.6, due to API differences between the
two packages.

All tests pass using 1.4.1, 1.5, and ~1.6 (tip).

Change-Id: Ifd75a6330e120957d646be91693daaba1ce0e8c9
Reviewed-on: https://go-review.googlesource.com/18333
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-01-06 20:40:09 +00:00
Alan Donovan 8463610142 go/ssa/interp: enable support for Example tests
1. Added intrinsic for os.Pipe to avoid use of "unsafe".  This makes
   Example tests work in the interpreter, fixing the broken "unicode"
   package (which recently sprouted some Examples) and allowing us to
   enable tests for:

      encoding/csv
      flag
      path
      text/scanner
      unicode/utf8

   The implementation of os.Pipe may require tweaking for non-Linux platforms.

2. Added intrinsic for strings.Index to avoid assembly dependency.

3. Added dumb intrinsic for testing۰runExample to work around a bug in
   go/ssa/testmain.go that requires an invasive fix
   (Until then, the output of Example functions will not be checked.)

Change-Id: I6374c9c47aa802275b7cdc98525e057f5db0615a
Reviewed-on: https://go-review.googlesource.com/18191
Reviewed-by: Alan Donovan <adonovan@google.com>
2015-12-28 21:19:28 +00:00
Alan Donovan afcda55b39 go/ssa: rename some API features (incompatible change)
Rename the following exported names:
	(*Program).BuildAll → Build
	(*Program).Method   → MethodValue
	Package.Object      → Pkg
Also:
	(*Function).pkgobj  → pkg

Change-Id: Iff7e6c240ebe6786ba759278ac0daa3d66698013
Reviewed-on: https://go-review.googlesource.com/14134
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-08-31 22:20:12 +00:00
Robert Griesemer f389b29208 go/ssa: fix build (remove unused params to types.NewSignature)
TBR: adonovan

Change-Id: I669140d6e0735804625b0327caa51f4e1807d277
Reviewed-on: https://go-review.googlesource.com/11040
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-06-13 00:57:15 +00:00
Alan Donovan 96af1504f6 go/ssa: add list-of-tests constant to generated testmain package
And log its value in godoc -analysis.

Related to issue 8968

Change-Id: I96a96922a3fa5c434c69e0faff1cc8ec4686b6f2
Reviewed-on: https://go-review.googlesource.com/3154
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-01-22 22:45:41 +00:00
Alan Donovan e079f6c632 go/ssa: change import path of synthetic test package to "test$main"
...to avoid namespace conflicts.
Also make its name "main", since it defines func main().

And fix 2 typos.

Change-Id: I7cf7894d6bed134907b3d2742255e5a82426071b
Reviewed-on: https://go-review.googlesource.com/3150
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-01-21 22:21:01 +00:00
Alan Donovan 538acf1c92 go/ssa: add position info to all Load/Store instructions
Was originally https://codereview.appspot.com/92880043/ by Richard Musiol.

Change-Id: If0b22cf962b94ef44edbac28a5e5af4acb950991
Reviewed-on: https://go-review.googlesource.com/2174
Reviewed-by: Robert Griesemer <gri@golang.org>
2014-12-29 23:03:32 +00:00
Andrew Gerrand 5ebbcd132f go.tools: use golang.org/x/... import paths
Rewrite performed with this command:
  sed -i '' 's_code.google.com/p/go\._golang.org/x/_g' \
    $(grep -lr 'code.google.com/p/go.' *)

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/170920043
2014-11-10 08:50:40 +11:00
Alan Donovan 9872f0d268 go.tools/*: replace $GOROOT/src/pkg with $GOROOT/src where appropriate.
(godoc is excluded from this CL since it will continue to use
/src/pkg in its URL namespace, making the necessary cleanup
more subtle.)

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/141770043
2014-09-08 13:24:38 -04:00
Alan Donovan cd6b8ab06d go.tools/go/ssa: improvements to CreateTestMainPackage.
(1) support Example functions defined in programs that don't
    import "testing".  We emit code to testmain.main() to call
    them directly, since we can't call testing.Main.

(2) expose a FindTests function which reports the set of
    Test, Example and Benchmark functions it finds.
    Certain clients need this.

Added test for logic in FindTests.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/115290048
2014-08-08 14:47:16 -04:00
Alan Donovan 149e030318 go.tools/cmd/ssadump: print packages and functions to stdout, not stderr.
And serialize the printing of each item with a mutex.
It is the formatted output of this tool, after all.

Also: minor doc tweaks.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/114620044
2014-08-01 14:44:37 -04:00
Alan Donovan 9ffbf29971 go.tools/go/ssa: add hook to testmain.go for proprietary (non-'go test') build systems.
Users need only add an extra file to the package to specify
additional imports and initialization steps in testmain, to
match their build system.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/120090043
2014-07-23 15:37:37 -04:00
Alan Donovan de23e2b0c2 go/ssa: make Builtin capable of representing non-spec-defined intrinsics.
Also, define ssa:wrapnilchk intrinsic to check and gracefully
fail when a T method is dynamically invoked via a nil *T receiver.
+ Test.

A follow-up CL will add another intrinsic, ssa:memclr.

+ minor cleanups.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/101170044
2014-06-13 17:34:07 -04:00
Alan Donovan 04427c85cf go/ssa: add Node interface: common parts of Value+Instruction, plus Operands/Referrers.
Also:
- extend Parent() to all Values and add to interface:
  (Builtin/Const/Global => nil; Function => Enclosing)
- hide Function.Enclosing since it's now redundant wrt Parent()
- make (*Function).String robust for synthetics without pkg object

LGTM=gri
R=gri
CC=golang-codereviews, khr
https://golang.org/cl/87580044
2014-06-11 13:14:06 -04:00
Alan Donovan 01263f0a00 go.tools/go/ssa: fix breakage caused by removal of types.NewPackage parameter.
TBR=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/66600045
2014-02-20 19:49:38 -05:00
Alan Donovan 0c9517ddba go.tools/go/pointer: assert that input program is complete.
Fixes golang/go#7257

LGTM=crawshaw
R=daniel.morsing, crawshaw
CC=golang-codereviews
https://golang.org/cl/65730045
2014-02-19 13:08:06 -05:00
Alan Donovan ee92efc193 go.tools/ssa: tweaks to CreateTestMainPackage.
Move mutation of program to the final step.
+ 2 assertions;
+ switches.go: comment fix.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/61510044
2014-02-11 15:59:20 -05:00
Alan Donovan 744d7e68b1 go.tools/go/ssa: use bytes.Buffer instead of io.Writer.
This is (a) more efficient and (b) avoids the need for
constant error handling, since buffer writes can't fail.

Also:
- added WriteFunction and WritePackage functions,
  similar to types.WriteFoo.
- *Function and *Package now implement io.WriterTo.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/57930044
2014-01-28 17:48:10 -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
Alan Donovan 3fc0fc1310 go.tools: rename packages.
Was:		Now:
ssa		go/ssa
importer	go/loader
pointer		go/pointer

Next CL: call -> go/callgraph (requires more care)

R=gri, crawshaw
CC=golang-codereviews
https://golang.org/cl/52960043
2014-01-16 09:33:58 -05:00