feat: add @[mvcgen_invariant_type] attribute for extensible invariant classification#12874
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feat: add @[mvcgen_invariant_type] attribute for extensible invariant classification#12874
@[mvcgen_invariant_type] attribute for extensible invariant classification#12874Conversation
…nt classification This PR adds an `@[mvcgen_invariant_type]` tag attribute so that users can mark custom types as invariant types for the `mvcgen` tactic. Goals whose type is an application of a tagged type are classified as invariants rather than verification conditions. The hard-coded check for `Std.Do.Invariant` is kept as a fallback until a stage0 update allows applying the attribute directly. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…iteration Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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…nt`, `StringSliceInvariant` (#12880) This PR applies `@[mvcgen_invariant_type]` to `Std.Do.Invariant` and removes the hard-coded fallback in `isMVCGenInvariantType` that was needed for bootstrapping (cf. #12874). It also extracts `StringInvariant` and `StringSliceInvariant` as named abbreviations tagged with `@[mvcgen_invariant_type]`, so that `mvcgen` classifies string and string slice loop invariants correctly. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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This PR adds an
@[mvcgen_invariant_type]tag attribute so that users can markcustom types as invariant types for the
mvcgentactic. Goals whose type is anapplication of a tagged type are classified as invariants rather than verification
conditions. The hard-coded check for
Std.Do.Invariantis kept as a fallbackuntil a stage0 update allows applying the attribute directly.
A follow-up PR (after a stage0 update) will apply
@[mvcgen_invariant_type]toStd.Do.Invariantand remove the hard-coded fallback.