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Nelglor 91830f1e0e feat(managed): name the declaring type of call and field targets (#2163)
* feat(managed): name the declaring type of call and field targets

Call edges named external targets by member name alone (Join, ToJson,
WriteAllText), and method-spec edges had no name at all, so an analyst could
not tell which library a method calls or find every use of a type without a
decompiler. Field accesses through MemberRefs had no name either.

Name each TypeDef, TypeRef, and generic-instantiation TypeSpec once, in the
namespace-qualified form TypeDef full_name uses, and add member_refs
parent_name, call_edges target_declaring_type, and field_accesses
field_declaring_type. A method-spec target reports the generic method it
instantiates. Fields, member references, methods, and method specs now
resolve through one token-keyed MemberCore lookup instead of three maps.
Evidence recorded before these fields reads them as null.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): validate spec blobs and member kinds before naming targets

Address review findings on declaring-type naming:

- A generic instantiation must name a TypeDef or TypeRef, so a TypeSpec
  base is reported as malformed instead of followed. Naming no longer
  recurses.
- TypeSpec and MethodSpec instantiation blobs are decoded with the
  member-signature grammar. Malformed blobs and out-of-range TypeDef rows
  are reported against their owning row and make coverage partial.
- A MethodSpec reads both columns. An invalid Method coded index is
  reported; a readable Method keeps its name beside a malformed
  instantiation.
- MemberCore carries its signature kind, so a field operand is named only
  by a field or field-signature MemberRef. This replaces the token-table
  guard.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): validate MethodSpec arity and report unsupported spec blobs

- A MethodSpec now checks that its method signature is generic and that
  the instantiation supplies as many type arguments as it declares. A
  non-generic target, a field reference, or a count mismatch is reported
  as invalid-row; the readable method keeps its name.
- Unsupported TypeSpec and MethodSpec forms raise an owner-scoped
  unsupported-signature issue instead of reading as an intentional
  unknown.
- MethodSpec reading moves to ManagedMethodSpecs.ts, and its tests get
  their own describe block.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): reject non-method signature headers and invalid TypeRef scopes

The method signature header reader now owns the calling-convention rule
that only FNPTR applied: FIELD, LOCAL_SIG, PROPERTY, and GENERICINST
headers, the reserved bit, and EXPLICITTHIS without HASTHIS are malformed.
A MethodSpec whose method has a PROPERTY header is no longer accepted as a
generic method, and member signatures with such headers no longer decode
as methods.

The type-name lookup validates a TypeRef's ResolutionScope coded index and
reports an out-of-range scope as invalid-row, keeping the readable name.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): hold member rows to MethodDefSig and FieldSig headers

Method signature headers are now checked in context. MethodDef and
MemberRef rows accept only the MethodDefSig/MethodRefSig headers: DEFAULT,
VARARG, or GENERIC with DEFAULT. FNPTR keeps the unmanaged conventions
compilers emit for function pointers. A field signature must be exactly
FIELD, so a flagged FIELD header is malformed and never names a field.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): accept MethodSpec arity only from a fully decoded signature

The arity check read only the target's signature header, so a truncated
generic method signature passed. Under type selection a MethodDef target
outside the selection is never decoded elsewhere, so coverage stayed
complete. The arity now comes from a transient full decode, and only a
decoded method signature supplies it. signature() keeps its raw length
and digest around the shared decodeSignature.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* perf(managed): decode each MethodSpec target signature once

edgeTargets caches the generic arity, including a failed decode, by
target method token, so many instantiations of one generic method share
a single signature decode. Unity.InputSystem has 472 distinct MethodSpecs
over about 133 target methods.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): validate spec type operands and transitive reference scopes

* fix(managed): retain readable names when a scope row is unreadable

* test(managed): pin owner-scoped spec operand and scope-chain checks

e59217c83 validates spec type operands inside specSignature, so a
malformed generic TypeSpec base is now invalid-row under its owning
TypeSpec row; the three stale expectations follow that. New cases cover
a TypeSpec argument and a MethodSpec argument that name a missing TypeRef,
and a TypeRef whose ResolutionScope names itself. The scope cases move to
their own describe block.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): keep field targets from naming MethodSpecs

A MethodSpec over a field-signature MemberRef inherited kind "field", so
an ldsfld on that MethodSpec published a field name and declaring type
for malformed IL. A MethodSpec now borrows its target's name only when
the target is not a field; the arity check still reports it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(managed): reuse owner-decoded signatures for MethodSpec arity

MemberRef signatures, and MethodDef signatures in the type selection, are
already fully decoded, but the MethodSpec arity check decoded them again
and admitted a second transient allocation, which could exhaust the
budget. MemberCore now carries the owner's genericArity, and only a target
nothing decoded, such as an unselected MethodDef, falls back to the raw
signature. signatureGenericArity is the one rule for both paths.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: morluto <76467478+morluto@users.noreply.github.com>
2026-10-13 21:12:15 +08:00
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