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[WIP] Add finite set operators to Z3_decl_kind enumeration (#8004)

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* Initial plan

* Add Z3_decl_kind enumeration for finite_set operators

- Added Z3_OP_FINITE_SET_* enumeration values (0xc000 range) to z3_api.h
- Added documentation for all 13 finite_set operators
- Added translation cases in api_ast.cpp for mapping internal finite_set
  enum values to external Z3_decl_kind values
- All operators tested and working correctly

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Improve documentation for Z3_OP_FINITE_SET_EXT and Z3_OP_FINITE_SET_MAP_INVERSE

- Clarified that Z3_OP_FINITE_SET_EXT returns a witness element demonstrating
  two sets are different (extensionality)
- Clarified that Z3_OP_FINITE_SET_MAP_INVERSE relates to pre-image reasoning

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
Copilot 2025-10-29 16:52:38 -07:00 • committed by GitHub
parent 4536985bf7
commit 450412c854
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19
src/api/api_ast.cpp
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@ -1467,6 +1467,25 @@ extern "C" {
}
}
if (mk_c(c)->fsutil().get_family_id() == _d->get_family_id()) {
switch(_d->get_decl_kind()) {
case OP_FINITE_SET_EMPTY: return Z3_OP_FINITE_SET_EMPTY;
case OP_FINITE_SET_SINGLETON: return Z3_OP_FINITE_SET_SINGLETON;
case OP_FINITE_SET_UNION: return Z3_OP_FINITE_SET_UNION;
case OP_FINITE_SET_INTERSECT: return Z3_OP_FINITE_SET_INTERSECT;
case OP_FINITE_SET_DIFFERENCE: return Z3_OP_FINITE_SET_DIFFERENCE;
case OP_FINITE_SET_IN: return Z3_OP_FINITE_SET_IN;
case OP_FINITE_SET_SIZE: return Z3_OP_FINITE_SET_SIZE;
case OP_FINITE_SET_SUBSET: return Z3_OP_FINITE_SET_SUBSET;
case OP_FINITE_SET_MAP: return Z3_OP_FINITE_SET_MAP;
case OP_FINITE_SET_FILTER: return Z3_OP_FINITE_SET_FILTER;
case OP_FINITE_SET_RANGE: return Z3_OP_FINITE_SET_RANGE;
case OP_FINITE_SET_EXT: return Z3_OP_FINITE_SET_EXT;
case OP_FINITE_SET_MAP_INVERSE: return Z3_OP_FINITE_SET_MAP_INVERSE;
default: return Z3_OP_INTERNAL;
}
}
if (mk_c(c)->recfun().get_family_id() == _d->get_family_id())
return Z3_OP_RECURSIVE;