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Leonardo de Moura 4eaaadf1c1
feat: add pattern matching/unification for symbolic simulation (#11813) 
This PR introduces a fast pattern matching and unification module for
the symbolic simulation framework (`Sym`). The design prioritizes
performance by using a two-phase approach:

**Phase 1 (Syntactic Matching)**
- Patterns use de Bruijn indices for expression variables and renamed
level params (`_uvar.0`, `_uvar.1`, ...) for universe variables
- Matching is purely structural after reducible definitions are unfolded
during preprocessing
- Universe levels treat `max` and `imax` as uninterpreted functions (no
AC reasoning)
- Binders and term metavariables are deferred to Phase 2

**Phase 2 (Pending Constraints)** [WIP]
- Handles binders (Miller patterns) and metavariable unification
- Converts remaining de Bruijn variables to metavariables
- Falls back to `isDefEq` when necessary

**Key design decisions:**
- Preprocessing unfolds reducible definitions and performs beta/zeta
reduction
- Kernel projections are expected to be folded as projection
applications before matching
- Assignment conflicts are deferred to pending rather than invoking
`isDefEq` inline
- `instantiateRevS` ensures maximal sharing of result expressions

**TODO:**
- Skip instance arguments during matching, synthesize later
- Skip proof arguments (proof irrelevance)
- Implement `processPending` for Phase 2 constraints
2025-12-28 01:44:36 +00:00
..
Compiler fix: internalize all arguments to Quot.lift during LCNF conversion (#11729) 2025-12-18 09:31:48 +00:00
Data feat: add optional start position to PersistentArray.forM (#11784) 2025-12-23 22:12:02 +00:00
DocString chore: minor String API improvements (#11439) 2025-12-01 11:44:14 +00:00
Elab feat: add TransparencyMode.none (#11810) 2025-12-27 03:10:17 +00:00
Language feat: module system is no longer experimental (#11637) 2025-12-12 21:20:26 +00:00
LibrarySuggestions fix: improve "no library suggestions engine registered" error message (#11464) 2025-12-02 00:55:46 +00:00
Linter feat: lint coercions that are deprecated or banned in core (#11511) 2025-12-12 15:09:13 +00:00
Meta feat: add pattern matching/unification for symbolic simulation (#11813) 2025-12-28 01:44:36 +00:00
Parser refactor: move error explanation text to the manual (#11688) 2025-12-26 17:14:58 +00:00
ParserCompiler chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
PrettyPrinter refactor: move Std.Range to Std.Legacy.Range (#11438) 2025-12-18 02:07:33 +00:00
Server refactor: move error explanation text to the manual (#11688) 2025-12-26 17:14:58 +00:00
Util chore: fix spelling (#11531) 2025-12-06 13:54:27 +00:00
Widget chore: rename String.Range to Lean.Syntax.Range (#10852) 2025-10-21 07:32:25 +00:00
AddDecl.lean chore: use backticks for sorry in diagnostic messages (#11608) 2025-12-15 14:30:21 +00:00
Attributes.lean chore: fix spelling (#11531) 2025-12-06 13:54:27 +00:00
AuxRecursor.lean perf: handle per-constructor noConfusion in toLCNF (#11566) 2025-12-10 09:03:55 +00:00
BuiltinDocAttr.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
Class.lean
Compiler.lean chore: remove public section from end of files (#10684) 2025-10-06 13:30:48 +00:00
CoreM.lean perf: remove obsolete old codegen workaround (#9311) 2025-12-12 20:51:34 +00:00
Data.lean chore: remove public section from end of files (#10684) 2025-10-06 13:30:48 +00:00
Declaration.lean chore: >6 month old deprecations (#10969) 2025-10-26 22:48:41 +00:00
DeclarationRange.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
DefEqAttrib.lean
DocString.lean
Elab.lean feat: add #import_path, assert_not_exists, assert_not_imported commands (#11726) 2025-12-19 04:09:33 +00:00
EnvExtension.lean
Environment.lean perf: avoid kernel env block in realizeConst (#11617) 2025-12-12 11:20:20 +00:00
ErrorExplanation.lean refactor: move error explanation text to the manual (#11688) 2025-12-26 17:14:58 +00:00
Exception.lean refactor: move error explanation text to the manual (#11688) 2025-12-26 17:14:58 +00:00
Expr.lean fix: nonstandard instances in grind and simp +arith (#11758) 2025-12-21 17:56:49 +00:00
ExtraModUses.lean feat: shake: make Mathlib-ready (#11496) 2025-12-05 09:37:58 +00:00
HeadIndex.lean
Hygiene.lean chore: do not set unused Option.Decl.group (#11307) 2025-11-21 16:44:38 +00:00
IdentifierSuggestion.lean chore: remove NameMapExtension abbreviation (#11632) 2025-12-12 12:34:53 +00:00
ImportingFlag.lean
InternalExceptionId.lean
KeyedDeclsAttribute.lean fix: some ExtraModUses (#10620) 2025-10-03 15:50:40 +00:00
LabelAttribute.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
Level.lean fix: move the monad argument for ForIn, ForIn', and ForM (#10204) 2025-11-25 12:20:37 +00:00
LibrarySuggestions.lean fix: make library suggestions available in module files (#11373) 2025-11-26 05:39:27 +00:00
Linter.lean feat: lint coercions that are deprecated or banned in core (#11511) 2025-12-12 15:09:13 +00:00
LoadDynlib.lean refactor: use String.Slice in String.take and variants (#11180) 2025-11-18 16:13:48 +00:00
LocalContext.lean feat: support for incrementally processing hypotheses in grind (#11787) 2025-12-24 02:50:22 +00:00
Log.lean refactor: move error explanation text to the manual (#11688) 2025-12-26 17:14:58 +00:00
Message.lean fix: teach Exception.isRuntime to detect nested errors (#11490) 2025-12-10 10:19:33 +00:00
Meta.lean feat: add SymM monad (#11788) 2025-12-24 04:05:14 +00:00
MetavarContext.lean
Modifiers.lean chore: more module system fixes and refinements for finishing batteries port (#10819) 2025-10-21 08:19:50 +00:00
MonadEnv.lean feat: grind support for .ctorIdx (#11652) 2025-12-13 13:32:19 +00:00
Namespace.lean
Parser.lean feat: hexnum parser (#10716) 2025-10-08 21:12:03 +00:00
ParserCompiler.lean doc: correct typos in documentation and comments (#11465) 2025-12-02 06:38:05 +00:00
PrettyPrinter.lean chore: do not set unused Option.Decl.group (#11307) 2025-11-21 16:44:38 +00:00
PrivateName.lean
ProjFns.lean chore: delete obsolete C++ file (#11561) 2025-12-09 15:47:54 +00:00
ReducibilityAttrs.lean feat: allow setting reducibilityCoreExt in async contexts (#11301) 2025-11-21 09:23:14 +00:00
Replay.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
ReservedNameAction.lean
ResolveName.lean chore: more module system fixes and refinements for finishing batteries port (#10819) 2025-10-21 08:19:50 +00:00
Runtime.lean
ScopedEnvExtension.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
Server.lean feat: revamp server logging (#10787) 2025-10-28 16:26:59 +00:00
Setup.lean fix: symbol clashes between packages (#11082) 2025-11-19 02:24:44 +00:00
Shell.lean refactor: port shell option processing to Lean (v2) (#11434) 2025-12-02 17:41:51 +00:00
Structure.lean chore: remove redundant imports in core (#10750) 2025-10-16 20:27:46 +00:00
SubExpr.lean refactor: use String.split instead of String.splitOn or String.splitToList (#11250) 2025-11-19 09:35:19 +00:00
Syntax.lean fix: move the monad argument for ForIn, ForIn', and ForM (#10204) 2025-11-25 12:20:37 +00:00
ToExpr.lean feat: support for Rat scientific literals (#10961) 2025-10-26 02:05:26 +00:00
ToLevel.lean
Util.lean feat: instantiate tactic parameter optimizer (#10916) 2025-10-23 01:22:33 +00:00
Widget.lean chore: remove public section from end of files (#10684) 2025-10-06 13:30:48 +00:00