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3 Commits

Author SHA1 Message Date
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
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
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