Basalt bridge mockup#13
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Replace the HasType/WellTypedStmt running example with HasType/WellFormed which genuinely exercises all three mechanisms: backtracking (multiple constructors per type), DecOpt checkers (n ≠ 0 guard), and sub-generators (WellFormed calls HasType via BacktrackGenFor). Document changes: - Swap Sections 4 and 5 so DecOpt is defined before the generated code - Add unconstrained generator derivation (derive Arbitrary → GenFor) as Section 6, removing it from Known Limitations - Add fuel/size/partial_fixpoint discussion to Design Notes - Update all cross-references and proof sketches Test file changes: - Consolidate BridgeMockup.lean and BridgeDecOptMockup.lean into a single BridgeBacktrackMockup.lean that demonstrates all mechanisms - Include both status-quo (Specimen trace output) and migrated code - Add unconstrained generator (Tree.gen with frequency) example - Rename Generator/BacktrackGenerator to GenFor/BacktrackGenFor throughout
…rrected backtrack combinator; writeup in doc
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This looks good to me! We can discuss more specifics with @joscoh during our meeting tomorrow |
ngernest
previously approved these changes
Jun 9, 2026
joscoh
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Jun 9, 2026
joscoh
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Jun 10, 2026
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Description of changes: Added a couple of documents planning out Specimen development work. In particular: 1/ a plan to make its output compatible with Basalt, a semantic property testing framework, and 2/ a discussion about generator configuration. Also included are some testfiles that mockup the change outlined in the first document.
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