Support for:
(*reflect.rtype).Field
(*reflect.rtype).FieldByName
reflect.MakeSlice
runtime.SetFinalizer
Details:
- analysis locates ssa.Functions for (reflect.Value).Call
and runtime.SetFinalizer during startup to that it can
special-case them during genCall. ('Call' is forthcoming.)
- The callsite.targets mechanism is only used for dynamic
calls now. For static calls we call callEdge during constraint
generation; this is a minor optimisation.
- Static calls to SetFinalizer are inlined so that the call
appears to go direct to the finalizer. (We'll use the same
trick for (reflect.Value).Call.)
- runtime.FuncForPC: treat as a no-op.
- Fixed pointer_test to properly deal with expectations
that are multi-sets.
- Inlined rtypeMethodByNameConstraint.addMethod.
- More tests.
R=crawshaw
CC=golang-dev
https://golang.org/cl/14682045
This information can be used to specialize such calls, e.g.
- report location of unsound calls (done for reflect.NewAt)
- exploit argument information (done for constant 'dir' parameter to reflect.ChanOf)
+ tests.
R=crawshaw
CC=golang-dev
https://golang.org/cl/14517046
The previous CL made the assumption that Root is the first
node, which is false for programs that import "reflect".
Reverted to the previous way: an explicit root field.
Added regression test (callgraph2) via oracle.
R=crawshaw
TBR=crawshaw
CC=golang-dev
https://golang.org/cl/13967043
Also: pointer.Analyze now returns a pointer.Result object,
containing the callgraph and the results of ssa.Value queries.
The oracle has been updated to use the new call and pointer APIs.
R=crawshaw, gri
CC=golang-dev
https://golang.org/cl/13915043
See json.go for interface specification.
Example usage:
% oracle -format=json -mode=callgraph code.google.com/p/go.tools/cmd/oracle
+ Tests, based on (small) golden files.
Overview:
Each <query>Result structure has been "lowered" so that all
but the most trivial logic in each display() function has
been moved to the main query.
Each one now has a toJSON method that populates a json.Result
struct. Though the <query>Result structs are similar to the
correponding JSON protocol, they're not close enough to be
used directly; for example, the former contain richer
semantic entities (token.Pos, ast.Expr, ssa.Value,
pointer.Pointer, etc) whereas JSON contains only their
printed forms using Go basic types.
The choices of what levels of abstractions the two sets of
structs should have is somewhat arbitrary. We may want
richer information in the JSON output in future.
Details:
- oracle.Main has been split into oracle.Query() and the
printing of the oracle.Result.
- the display() method no longer needs an *oracle param, only
a print function.
- callees: sort the result for determinism.
- callees: compute the union across all contexts.
- callers: sort the results for determinism.
- describe(package): fixed a bug in the predicate for method
accessibility: an unexported method defined in pkg A may
belong to a type defined in package B (via
embedding/promotion) and may thus be accessible to A. New
accessibleMethods() utility fixes this.
- describe(type): filter methods by accessibility.
- added tests of 'callgraph'.
- pointer: eliminated the 'caller CallGraphNode' parameter from
pointer.Context.Call callback since it was redundant w.r.t
site.Caller().
- added warning if CGO_ENABLED is unset.
R=crawshaw
CC=golang-dev
https://golang.org/cl/13270045
