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Commit Graph

11 Commits

Author SHA1 Message Date
Alan Donovan
69ce87a6c1 go.tools/ssa: some refactorings
ssa:
- Prog.CreatePackages inlined into all callers.
- Prog.CreatePackage is now exposed; idempotent; and checks for errors.
- '*address' not 'address' now implements lvalue (since it's 6 words).
- removed types.Method case from createMemberFromObject.

importer:
- added importer.PackageInfo.String method.
- simplifed importer.PackageInfo by putting types.Info in it.
- removed obsolete precondition from IsType.

R=gri
CC=golang-dev
https://golang.org/cl/11408045
2013-07-18 16:59:06 -04:00
Alan Donovan
80ec883f7b go.tools/ssa: several small clean-ups.
- removed a number of obsolete TODO(gri) comments.
- bring ssa.DefaultType back into sync with types.defaultType.
- re-enable types.Package.Path()!="" assertion.
- use Path() (not reflect pointer) in sort routine.
- make interp.checkInterface use types.MissingMethod.
- un-export ssa.MakeId function.
- inline pointer() into all callers, and delete.
- enable two more interp_tests: $GOROOT/test/{method3,cmp}.go
- add links to bugs to other interp_tests.
- add runtime.NumCPU to ssa/interp/externals.go

R=gri
CC=golang-dev
https://golang.org/cl/11353043
2013-07-16 12:23:55 -04:00
Alan Donovan
c24b2413c0 go.tools/ssa: use go/types.LookupFieldOrMethod, and simplify.
Added tests.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/10830043
2013-07-01 15:17:36 -04:00
Alan Donovan
fc4c97d1f1 go.tools/ssa: refactoring: eliminate Builder from API.
Details:
- builder is now un-exported and is now a per-package entity.
- Package.nTo1Vars is now part of builder, where it belongs.
- CREATE phase code split out into its own file, create.go
- Context type is gone; it had become trivial after the
  Importer refactoring.
- importer.PackageInfo.Imports() now encapsulates iteration
  over imports.

Typical usage is now:
  prog := ssa.NewProgram(imp.Fset, mode)
  prog.CreatePackages(imp)
  prog.BuildAll()

Builder.BuildPackage(Package) is now Package.Build()
Builder.BuildAllPackages() is now Program.BuildAll()

R=iant, gri
CC=golang-dev
https://golang.org/cl/9970044
2013-06-03 16:46:57 -04:00
Alan Donovan
4d628a0312 go.tools/ssa: refactoring to make Builder stateless.
A Builder is now just a Program and a Context.

Details of this CL:
- Builder.imp field removed.
- Builder.globals split up into Package.values and Prog.Builtins.
- Builder.packages  moved to Prog.packages.
- Builder.PackageFor moved to Program.Package(types.Object)
- Program.Lookup() func replaces Builder.globals map.
- also: keep Package.info field around until end of BuildPackage.

Planned follow-ups to eliminate Builder from API:
- split NewBuilder up into NewProgram and Program.CreatePackages(...)
- move Builder.BuildAllPackages -> Program.BuildAll(Context)
- move Builder.BuildPackage -> Package.Build(Context)

R=gri, iant
CC=golang-dev
https://golang.org/cl/9966044
2013-06-03 14:15:19 -04:00
Alan Donovan
1f2812fe9b go.tools/ssa: fix bug in makeBridgeMethod for promoted interfaces.
The method index was hard-coded to zero, which works some of
the time.  Apparently I just forgot to implement the
method-table lookup...

Added regression test.

R=gri
CC=golang-dev
https://golang.org/cl/9916043
2013-05-31 16:36:03 -04:00
Alan Donovan
be28dbb86f go.types/ssa: split the load/parse/typecheck logic off into a separate package.
PLEASE NOTE: the APIs for both "importer" and "ssa" packages
will continue to evolve and both need some polishing; the key
thing is that this CL splits them.

The go.types/importer package contains contains the Importer,
which takes care of the mechanics of loading a set of packages
and type-checking them.  It exposes for each package a
PackageInfo containing:
- the package's ASTs (i.e. the input to the typechecker)
- the types.Package object
- the memoization of the typechecker callbacks for identifier
  resolution, constant folding and expression type inference.

Method-set computation (and hence bridge-method creation) is
now moved to after creation of all packages: since they are no
longer created in topological order, we can't guarantee the
needed delegate methods exist yet.

ssa.Package no longer has public TypeOf, ObjectOf, ValueOf methods.
The private counterparts are valid only during the build phase.

Also:
- added to go/types an informative error (not crash) for an
  importer() returning nil without error.
- removed Package.Name(), barely needed.
- changed Package.String() slightly.
- flag what looks like a bug in makeBridgeMethod. Will follow up.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/9898043
2013-05-31 16:14:13 -04:00
Alan Donovan
20029fe5f7 go.tools/ssa: utility functions mapping source intervals to ast.Nodes.
PathEnclosingInterval: 	maps a source position to an ast.Node.
EnclosingFunction:   	finds ssa.Function enclosing an ast.Node.
HasEnclosingFunction:   cheaper impl of EnclosingFunction()!=nil
NodeDescription:        user friendly node type descriptions.

+ tests.

Also: make ssa.Package.TypeInfo field a pointer.

R=gri, r
CC=golang-dev
https://golang.org/cl/9639045
2013-05-28 15:28:46 -04:00
Alan Donovan
8cdf1f1cb1 go.tools/ssa: add support for bound-method closures.
Extracted Builder.findMethod function to handle
methodset/receiver logic common to
function calls (Builder.setCall) and
bound method closure creation (Builder.selector).

Capture: added explicit Name, Type fields to Capture instead
of relying on Outer field, which is now un-exported since its
only purpose is to let Builder.expr(case *ast.FuncLit) know
which values to put in the closure; it is nilled immediately
after.

Simplified Function.lookup() logic: there's no need to walk
the Outer chain each time to set Alloc.Heap=true, as it's
already set during creation of the outermost
Capture{outer:*Alloc}.

Added interp/testdata/boundmeth.go test.

Cosmetic changes:
- add support for bound method thunks to Function.FullName().
- Simplified {Literal,Global,Builtin,Function}.String()
- doc: Captures are no longer necessarily addresses.
- added yet another missing pair of "()" (go/types accessors).
- print "Synthetic" not "Declared at -" for synthetic functions.
- use '$' not center-dot in synthetic identifiers (easier to type).

R=gri
CC=golang-dev
https://golang.org/cl/9654043
2013-05-22 17:56:18 -04:00
Rob Pike
87334f402b go.tools: bring up to date
Repo was copied from old point.  Bad r.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/9504043
2013-05-17 14:02:47 -07:00
Rob Pike
01f8cd246d go.tools: add go/types, ssa, and cmd/vet
They will be deleted from their current homes once this has landed.
Changes made to import paths to make the code compile, and to find
errchk in the right place in cmd/vet's Makefile.
TODO in a later CL: tidy up vet.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/9495043
2013-05-17 13:20:39 -07:00