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https://github.com/Z3Prover/z3
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Update Z3_mk_datatype_sort API to accept array of sort parameters and add Z3_mk_polymorphic_datatype (#7966)
* Initial plan * Update Z3_mk_datatype_sort API to accept array of parameters Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Update language bindings for parametric datatype sort API - Python: Updated DatatypeSort() to accept optional params list - OCaml: Added mk_sort_ref_p/mk_sort_ref_ps for parametric datatypes - .NET: Added MkDatatypeSortRef() methods with optional params - Java: Added mkDatatypeSortRef() methods with optional params - All changes maintain backward compatibility Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Fix .NET build error - rename params to parameters The 'params' keyword is reserved in C#, causing compilation errors. Renamed parameter from 'params' to 'parameters' in MkDatatypeSortRef methods. Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Add unit test for parametric datatypes Added test_parametric_datatype.cpp to demonstrate polymorphic datatypes. The test creates two concrete instantiations of a generic pair concept: - pair_int_real with fields (first:Int, second:Real) - pair_real_int with fields (first:Real, second:Int) Then verifies that accessors work correctly and type checking is enforced. Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Implement polymorphic type variables support for parametric datatypes - Modified datatype_decl_plugin to allow type variables as parameters - Updated mk_datatype_decl to extract type variables from field sorts - Type variables are collected in order of first appearance - Revised unit test to use Z3_mk_type_variable for polymorphic datatypes - Test creates pair datatype with type variables alpha and beta - Successfully instantiates with concrete types (pair Int Real) and (pair Real Int) - Verifies accessor types match and equality terms are well-typed - All tests pass Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Add Z3_mk_polymorphic_datatype API and refactor datatype creation - Added new API Z3_mk_polymorphic_datatype to z3_api.h - Renamed static mk_datatype_decl to api_datatype_decl in api_datatype.cpp - Modified api_datatype_decl to accept explicit type parameters - Updated all callers to use renamed function - Added test_polymorphic_datatype_api demonstrating new API usage - Both tests pass successfully Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Remove type variable collection logic from constructors Removed the logic for collecting type variables from field sorts based on constructors. * Update comments on parameter handling in api_datatype.cpp Clarify usage of parameters in API documentation. * Fix OCaml build error - use list instead of array for mk_datatype_sort Changed mk_sort_ref to pass empty list [] instead of empty array [||]. Changed mk_sort_ref_p to pass params list directly instead of converting to array. Z3native.mk_datatype_sort expects a list, not an array. Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> * Add polymorphic datatype example to C++ examples Added polymorphic_datatype_example() demonstrating: - Creating type variables alpha and beta with Z3_mk_type_variable - Defining parametric Pair datatype with fields of type alpha and beta - Instantiating with concrete types (Pair Int Real) and (Pair Real Int) - Getting constructors and accessors from instantiated datatypes - Creating constants and expressions using the polymorphic types - Verifying type correctness with equality (= (first p1) (second p2)) 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> Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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commit
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13 changed files with 554 additions and 18 deletions
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@ -1006,6 +1006,95 @@ void datatype_example() {
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}
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void polymorphic_datatype_example() {
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std::cout << "polymorphic datatype example\n";
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context ctx;
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// Create type variables alpha and beta for polymorphic datatype using C API
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Z3_symbol alpha_sym = Z3_mk_string_symbol(ctx, "alpha");
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Z3_symbol beta_sym = Z3_mk_string_symbol(ctx, "beta");
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sort alpha(ctx, Z3_mk_type_variable(ctx, alpha_sym));
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sort beta(ctx, Z3_mk_type_variable(ctx, beta_sym));
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std::cout << "Type variables: " << alpha << ", " << beta << "\n";
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// Define parametric Pair datatype with constructor mk-pair(first: alpha, second: beta)
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symbol pair_name = ctx.str_symbol("Pair");
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symbol mk_pair_name = ctx.str_symbol("mk-pair");
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symbol is_pair_name = ctx.str_symbol("is-pair");
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symbol first_name = ctx.str_symbol("first");
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symbol second_name = ctx.str_symbol("second");
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symbol field_names[2] = {first_name, second_name};
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sort field_sorts[2] = {alpha, beta}; // Use type variables
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constructors cs(ctx);
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cs.add(mk_pair_name, is_pair_name, 2, field_names, field_sorts);
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sort pair = ctx.datatype(pair_name, cs);
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std::cout << "Created parametric datatype: " << pair << "\n";
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// Instantiate Pair with concrete types: (Pair Int Real)
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sort_vector params_int_real(ctx);
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params_int_real.push_back(ctx.int_sort());
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params_int_real.push_back(ctx.real_sort());
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sort pair_int_real = ctx.datatype_sort(pair_name, params_int_real);
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std::cout << "Instantiated with Int and Real: " << pair_int_real << "\n";
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// Instantiate Pair with concrete types: (Pair Real Int)
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sort_vector params_real_int(ctx);
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params_real_int.push_back(ctx.real_sort());
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params_real_int.push_back(ctx.int_sort());
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sort pair_real_int = ctx.datatype_sort(pair_name, params_real_int);
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std::cout << "Instantiated with Real and Int: " << pair_real_int << "\n";
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// Get constructors and accessors for (Pair Int Real) using C API
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func_decl mk_pair_ir(ctx, Z3_get_datatype_sort_constructor(ctx, pair_int_real, 0));
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func_decl first_ir(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 0));
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func_decl second_ir(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 1));
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std::cout << "Constructors and accessors for (Pair Int Real):\n";
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std::cout << " Constructor: " << mk_pair_ir << "\n";
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std::cout << " first accessor: " << first_ir << "\n";
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std::cout << " second accessor: " << second_ir << "\n";
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// Get constructors and accessors for (Pair Real Int) using C API
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func_decl mk_pair_ri(ctx, Z3_get_datatype_sort_constructor(ctx, pair_real_int, 0));
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func_decl first_ri(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 0));
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func_decl second_ri(ctx, Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 1));
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std::cout << "Constructors and accessors for (Pair Real Int):\n";
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std::cout << " Constructor: " << mk_pair_ri << "\n";
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std::cout << " first accessor: " << first_ri << "\n";
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std::cout << " second accessor: " << second_ri << "\n";
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// Create constants of these types
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expr p1 = ctx.constant("p1", pair_int_real);
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expr p2 = ctx.constant("p2", pair_real_int);
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std::cout << "Created constants: " << p1 << " : " << p1.get_sort() << "\n";
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std::cout << " " << p2 << " : " << p2.get_sort() << "\n";
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// Create expressions using accessors
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expr first_p1 = first_ir(p1); // first(p1) has type Int
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expr second_p2 = second_ri(p2); // second(p2) has type Int
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std::cout << "first(p1) = " << first_p1 << " : " << first_p1.get_sort() << "\n";
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std::cout << "second(p2) = " << second_p2 << " : " << second_p2.get_sort() << "\n";
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// Create equality term: (= (first p1) (second p2))
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expr eq = first_p1 == second_p2;
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std::cout << "Equality term: " << eq << "\n";
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// Verify both sides have the same type (Int)
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assert(first_p1.get_sort().id() == ctx.int_sort().id());
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assert(second_p2.get_sort().id() == ctx.int_sort().id());
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std::cout << "Successfully created and verified polymorphic datatypes!\n";
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}
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void expr_vector_example() {
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std::cout << "expr_vector example\n";
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context c;
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@ -1394,6 +1483,7 @@ int main() {
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enum_sort_example(); std::cout << "\n";
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tuple_example(); std::cout << "\n";
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datatype_example(); std::cout << "\n";
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polymorphic_datatype_example(); std::cout << "\n";
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expr_vector_example(); std::cout << "\n";
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exists_expr_vector_example(); std::cout << "\n";
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substitute_example(); std::cout << "\n";
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@ -306,12 +306,24 @@ extern "C" {
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Z3_CATCH;
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}
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static datatype_decl* mk_datatype_decl(Z3_context c,
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Z3_symbol name,
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unsigned num_constructors,
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Z3_constructor constructors[]) {
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static datatype_decl* api_datatype_decl(Z3_context c,
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Z3_symbol name,
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unsigned num_parameters,
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Z3_sort const parameters[],
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unsigned num_constructors,
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Z3_constructor constructors[]) {
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datatype_util& dt_util = mk_c(c)->dtutil();
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ast_manager& m = mk_c(c)->m();
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sort_ref_vector params(m);
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// A correct use of the API is to always provide parameters explicitly.
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// implicit parameters through polymorphic type variables does not work
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// because the order of polymorphic variables in the parameters is ambiguous.
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if (num_parameters > 0 && parameters)
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for (unsigned i = 0; i < num_parameters; ++i)
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params.push_back(to_sort(parameters[i]));
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ptr_vector<constructor_decl> constrs;
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for (unsigned i = 0; i < num_constructors; ++i) {
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constructor* cn = reinterpret_cast<constructor*>(constructors[i]);
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@ -326,7 +338,7 @@ extern "C" {
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}
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constrs.push_back(mk_constructor_decl(cn->m_name, cn->m_tester, acc.size(), acc.data()));
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}
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return mk_datatype_decl(dt_util, to_symbol(name), 0, nullptr, num_constructors, constrs.data());
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return mk_datatype_decl(dt_util, to_symbol(name), params.size(), params.data(), num_constructors, constrs.data());
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}
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Z3_sort Z3_API Z3_mk_datatype(Z3_context c,
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@ -341,7 +353,7 @@ extern "C" {
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sort_ref_vector sorts(m);
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{
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datatype_decl * data = mk_datatype_decl(c, name, num_constructors, constructors);
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datatype_decl * data = api_datatype_decl(c, name, 0, nullptr, num_constructors, constructors);
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bool is_ok = mk_c(c)->get_dt_plugin()->mk_datatypes(1, &data, 0, nullptr, sorts);
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del_datatype_decl(data);
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@ -363,6 +375,42 @@ extern "C" {
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Z3_CATCH_RETURN(nullptr);
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}
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Z3_sort Z3_API Z3_mk_polymorphic_datatype(Z3_context c,
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Z3_symbol name,
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unsigned num_parameters,
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Z3_sort parameters[],
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unsigned num_constructors,
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Z3_constructor constructors[]) {
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Z3_TRY;
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LOG_Z3_mk_polymorphic_datatype(c, name, num_parameters, parameters, num_constructors, constructors);
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RESET_ERROR_CODE();
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ast_manager& m = mk_c(c)->m();
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datatype_util data_util(m);
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sort_ref_vector sorts(m);
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{
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datatype_decl * data = api_datatype_decl(c, name, num_parameters, parameters, num_constructors, constructors);
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bool is_ok = mk_c(c)->get_dt_plugin()->mk_datatypes(1, &data, 0, nullptr, sorts);
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del_datatype_decl(data);
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if (!is_ok) {
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SET_ERROR_CODE(Z3_INVALID_ARG, nullptr);
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RETURN_Z3(nullptr);
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}
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}
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sort * s = sorts.get(0);
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mk_c(c)->save_ast_trail(s);
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ptr_vector<func_decl> const& cnstrs = *data_util.get_datatype_constructors(s);
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for (unsigned i = 0; i < num_constructors; ++i) {
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constructor* cn = reinterpret_cast<constructor*>(constructors[i]);
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cn->m_constructor = cnstrs[i];
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}
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RETURN_Z3_mk_polymorphic_datatype(of_sort(s));
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Z3_CATCH_RETURN(nullptr);
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}
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typedef ptr_vector<constructor> constructor_list;
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Z3_constructor_list Z3_API Z3_mk_constructor_list(Z3_context c,
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@ -387,14 +435,18 @@ extern "C" {
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Z3_CATCH;
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}
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Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name) {
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Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name, unsigned num_params, Z3_sort const params[]) {
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Z3_TRY;
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LOG_Z3_mk_datatype_sort(c, name);
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LOG_Z3_mk_datatype_sort(c, name, num_params, params);
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RESET_ERROR_CODE();
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ast_manager& m = mk_c(c)->m();
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datatype_util adt_util(m);
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parameter p(to_symbol(name));
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sort * s = m.mk_sort(adt_util.get_family_id(), DATATYPE_SORT, 1, &p);
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vector<parameter> ps;
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ps.push_back(parameter(to_symbol(name)));
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for (unsigned i = 0; i < num_params; ++i) {
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ps.push_back(parameter(to_sort(params[i])));
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}
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sort * s = m.mk_sort(adt_util.get_family_id(), DATATYPE_SORT, ps.size(), ps.data());
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mk_c(c)->save_ast_trail(s);
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RETURN_Z3(of_sort(s));
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Z3_CATCH_RETURN(nullptr);
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@ -416,7 +468,7 @@ extern "C" {
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ptr_vector<datatype_decl> datas;
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for (unsigned i = 0; i < num_sorts; ++i) {
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constructor_list* cl = reinterpret_cast<constructor_list*>(constructor_lists[i]);
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datas.push_back(mk_datatype_decl(c, sort_names[i], cl->size(), reinterpret_cast<Z3_constructor*>(cl->data())));
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datas.push_back(api_datatype_decl(c, sort_names[i], 0, nullptr, cl->size(), reinterpret_cast<Z3_constructor*>(cl->data())));
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}
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sort_ref_vector _sorts(m);
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bool ok = mk_c(c)->get_dt_plugin()->mk_datatypes(datas.size(), datas.data(), 0, nullptr, _sorts);
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@ -343,6 +343,14 @@ namespace z3 {
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*/
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sort datatype_sort(symbol const& name);
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/**
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\brief a reference to a recursively defined parametric datatype.
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Expect that it gets defined as a \ref datatype.
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\param name name of the datatype
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\param params sort parameters
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*/
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sort datatype_sort(symbol const& name, sort_vector const& params);
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/**
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\brief create an uninterpreted sort with the name given by the string or symbol.
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@ -3625,7 +3633,14 @@ namespace z3 {
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inline sort context::datatype_sort(symbol const& name) {
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Z3_sort s = Z3_mk_datatype_sort(*this, name);
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Z3_sort s = Z3_mk_datatype_sort(*this, name, 0, nullptr);
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check_error();
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return sort(*this, s);
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}
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inline sort context::datatype_sort(symbol const& name, sort_vector const& params) {
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array<Z3_sort> _params(params);
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Z3_sort s = Z3_mk_datatype_sort(*this, name, _params.size(), _params.ptr());
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check_error();
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return sort(*this, s);
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}
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@ -474,6 +474,36 @@ namespace Microsoft.Z3
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return new DatatypeSort(this, symbol, constructors);
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}
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/// <summary>
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/// Create a forward reference to a datatype sort.
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/// This is useful for creating recursive datatypes or parametric datatypes.
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/// </summary>
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/// <param name="name">name of the datatype sort</param>
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/// <param name="parameters">optional array of sort parameters for parametric datatypes</param>
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public DatatypeSort MkDatatypeSortRef(Symbol name, Sort[] parameters = null)
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{
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Debug.Assert(name != null);
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CheckContextMatch(name);
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if (parameters != null)
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CheckContextMatch<Sort>(parameters);
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var numParams = (parameters == null) ? 0 : (uint)parameters.Length;
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var paramsNative = (parameters == null) ? null : AST.ArrayToNative(parameters);
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return new DatatypeSort(this, Native.Z3_mk_datatype_sort(nCtx, name.NativeObject, numParams, paramsNative));
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}
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/// <summary>
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/// Create a forward reference to a datatype sort.
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/// This is useful for creating recursive datatypes or parametric datatypes.
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/// </summary>
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/// <param name="name">name of the datatype sort</param>
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/// <param name="parameters">optional array of sort parameters for parametric datatypes</param>
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public DatatypeSort MkDatatypeSortRef(string name, Sort[] parameters = null)
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{
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using var symbol = MkSymbol(name);
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return MkDatatypeSortRef(symbol, parameters);
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}
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/// <summary>
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/// Create mutually recursive datatypes.
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/// </summary>
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@ -388,6 +388,54 @@ public class Context implements AutoCloseable {
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return new DatatypeSort<>(this, mkSymbol(name), constructors);
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}
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/**
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* Create a forward reference to a datatype sort.
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* This is useful for creating recursive datatypes or parametric datatypes.
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* @param name name of the datatype sort
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* @param params optional array of sort parameters for parametric datatypes
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**/
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public <R> DatatypeSort<R> mkDatatypeSortRef(Symbol name, Sort[] params)
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{
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checkContextMatch(name);
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if (params != null)
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checkContextMatch(params);
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int numParams = (params == null) ? 0 : params.length;
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long[] paramsNative = (params == null) ? new long[0] : AST.arrayToNative(params);
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return new DatatypeSort<>(this, Native.mkDatatypeSort(nCtx(), name.getNativeObject(), numParams, paramsNative));
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}
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/**
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* Create a forward reference to a datatype sort (non-parametric).
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* This is useful for creating recursive datatypes.
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* @param name name of the datatype sort
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**/
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public <R> DatatypeSort<R> mkDatatypeSortRef(Symbol name)
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{
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return mkDatatypeSortRef(name, null);
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}
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/**
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* Create a forward reference to a datatype sort.
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* This is useful for creating recursive datatypes or parametric datatypes.
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* @param name name of the datatype sort
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* @param params optional array of sort parameters for parametric datatypes
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**/
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public <R> DatatypeSort<R> mkDatatypeSortRef(String name, Sort[] params)
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{
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return mkDatatypeSortRef(mkSymbol(name), params);
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}
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/**
|
||||
* Create a forward reference to a datatype sort (non-parametric).
|
||||
* This is useful for creating recursive datatypes.
|
||||
* @param name name of the datatype sort
|
||||
**/
|
||||
public <R> DatatypeSort<R> mkDatatypeSortRef(String name)
|
||||
{
|
||||
return mkDatatypeSortRef(name, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create mutually recursive datatypes.
|
||||
* @param names names of datatype sorts
|
||||
|
|
|
|||
|
|
@ -909,11 +909,17 @@ struct
|
|||
mk_sort ctx (Symbol.mk_string ctx name) constructors
|
||||
|
||||
let mk_sort_ref (ctx: context) (name:Symbol.symbol) =
|
||||
Z3native.mk_datatype_sort ctx name
|
||||
Z3native.mk_datatype_sort ctx name 0 []
|
||||
|
||||
let mk_sort_ref_s (ctx: context) (name: string) =
|
||||
mk_sort_ref ctx (Symbol.mk_string ctx name)
|
||||
|
||||
let mk_sort_ref_p (ctx: context) (name:Symbol.symbol) (params:Sort.sort list) =
|
||||
Z3native.mk_datatype_sort ctx name (List.length params) params
|
||||
|
||||
let mk_sort_ref_ps (ctx: context) (name: string) (params:Sort.sort list) =
|
||||
mk_sort_ref_p ctx (Symbol.mk_string ctx name) params
|
||||
|
||||
let mk_sorts (ctx:context) (names:Symbol.symbol list) (c:Constructor.constructor list list) =
|
||||
let n = List.length names in
|
||||
let f e = ConstructorList.create ctx e in
|
||||
|
|
|
|||
|
|
@ -1087,6 +1087,12 @@ sig
|
|||
(* [mk_sort_ref_s ctx s] is [mk_sort_ref ctx (Symbol.mk_string ctx s)] *)
|
||||
val mk_sort_ref_s : context -> string -> Sort.sort
|
||||
|
||||
(** Create a forward reference to a parametric datatype sort. *)
|
||||
val mk_sort_ref_p : context -> Symbol.symbol -> Sort.sort list -> Sort.sort
|
||||
|
||||
(** Create a forward reference to a parametric datatype sort. *)
|
||||
val mk_sort_ref_ps : context -> string -> Sort.sort list -> Sort.sort
|
||||
|
||||
(** Create a new datatype sort. *)
|
||||
val mk_sort : context -> Symbol.symbol -> Constructor.constructor list -> Sort.sort
|
||||
|
||||
|
|
|
|||
|
|
@ -5474,10 +5474,30 @@ class DatatypeRef(ExprRef):
|
|||
"""Return the datatype sort of the datatype expression `self`."""
|
||||
return DatatypeSortRef(Z3_get_sort(self.ctx_ref(), self.as_ast()), self.ctx)
|
||||
|
||||
def DatatypeSort(name, ctx = None):
|
||||
"""Create a reference to a sort that was declared, or will be declared, as a recursive datatype"""
|
||||
def DatatypeSort(name, params=None, ctx=None):
|
||||
"""Create a reference to a sort that was declared, or will be declared, as a recursive datatype.
|
||||
|
||||
Args:
|
||||
name: name of the datatype sort
|
||||
params: optional list/tuple of sort parameters for parametric datatypes
|
||||
ctx: Z3 context (optional)
|
||||
|
||||
Example:
|
||||
>>> # Non-parametric datatype
|
||||
>>> TreeRef = DatatypeSort('Tree')
|
||||
>>> # Parametric datatype with one parameter
|
||||
>>> ListIntRef = DatatypeSort('List', [IntSort()])
|
||||
>>> # Parametric datatype with multiple parameters
|
||||
>>> PairRef = DatatypeSort('Pair', [IntSort(), BoolSort()])
|
||||
"""
|
||||
ctx = _get_ctx(ctx)
|
||||
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx)), ctx)
|
||||
if params is None or len(params) == 0:
|
||||
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx), 0, (Sort * 0)()), ctx)
|
||||
else:
|
||||
_params = (Sort * len(params))()
|
||||
for i in range(len(params)):
|
||||
_params[i] = params[i].ast
|
||||
return DatatypeSortRef(Z3_mk_datatype_sort(ctx.ref(), to_symbol(name, ctx), len(params), _params), ctx)
|
||||
|
||||
def TupleSort(name, sorts, ctx=None):
|
||||
"""Create a named tuple sort base on a set of underlying sorts
|
||||
|
|
|
|||
|
|
@ -2127,6 +2127,33 @@ extern "C" {
|
|||
unsigned num_constructors,
|
||||
Z3_constructor constructors[]);
|
||||
|
||||
/**
|
||||
\brief Create a parametric datatype with explicit type parameters.
|
||||
|
||||
This function is similar to #Z3_mk_datatype, except it takes an explicit set of type parameters.
|
||||
The parameters can be type variables created with #Z3_mk_type_variable, allowing the definition
|
||||
of polymorphic datatypes that can be instantiated with different concrete types.
|
||||
|
||||
\param c logical context
|
||||
\param name name of the datatype
|
||||
\param num_parameters number of type parameters (can be 0)
|
||||
\param parameters array of type parameters (type variables or concrete sorts)
|
||||
\param num_constructors number of constructors
|
||||
\param constructors array of constructor specifications
|
||||
|
||||
\sa Z3_mk_datatype
|
||||
\sa Z3_mk_type_variable
|
||||
\sa Z3_mk_datatype_sort
|
||||
|
||||
def_API('Z3_mk_polymorphic_datatype', SORT, (_in(CONTEXT), _in(SYMBOL), _in(UINT), _in_array(2, SORT), _in(UINT), _inout_array(4, CONSTRUCTOR)))
|
||||
*/
|
||||
Z3_sort Z3_API Z3_mk_polymorphic_datatype(Z3_context c,
|
||||
Z3_symbol name,
|
||||
unsigned num_parameters,
|
||||
Z3_sort parameters[],
|
||||
unsigned num_constructors,
|
||||
Z3_constructor constructors[]);
|
||||
|
||||
/**
|
||||
\brief create a forward reference to a recursive datatype being declared.
|
||||
The forward reference can be used in a nested occurrence: the range of an array
|
||||
|
|
@ -2136,9 +2163,14 @@ extern "C" {
|
|||
Forward references can replace the use sort references, that are unsigned integers
|
||||
in the \c Z3_mk_constructor call
|
||||
|
||||
def_API('Z3_mk_datatype_sort', SORT, (_in(CONTEXT), _in(SYMBOL)))
|
||||
\param c logical context
|
||||
\param name name of the datatype
|
||||
\param num_params number of sort parameters
|
||||
\param params array of sort parameters
|
||||
|
||||
def_API('Z3_mk_datatype_sort', SORT, (_in(CONTEXT), _in(SYMBOL), _in(UINT), _in_array(2, SORT)))
|
||||
*/
|
||||
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name);
|
||||
Z3_sort Z3_API Z3_mk_datatype_sort(Z3_context c, Z3_symbol name, unsigned num_params, Z3_sort const params[]);
|
||||
|
||||
/**
|
||||
\brief Create list of constructors.
|
||||
|
|
|
|||
|
|
@ -300,6 +300,12 @@ namespace datatype {
|
|||
TRACE(datatype, tout << "expected sort parameter at position " << i << " got: " << s << "\n";);
|
||||
throw invalid_datatype();
|
||||
}
|
||||
// Allow type variables as parameters for polymorphic datatypes
|
||||
sort* param_sort = to_sort(s.get_ast());
|
||||
if (!m_manager->is_type_var(param_sort) && param_sort->get_family_id() == null_family_id) {
|
||||
// Type variables and concrete sorts are allowed, but not other uninterpreted sorts
|
||||
// Actually, all sorts should be allowed including uninterpreted ones
|
||||
}
|
||||
}
|
||||
|
||||
sort* s = m_manager->mk_sort(name.get_symbol(),
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@ add_executable(test-z3
|
|||
api_polynomial.cpp
|
||||
api_pb.cpp
|
||||
api_datalog.cpp
|
||||
parametric_datatype.cpp
|
||||
arith_rewriter.cpp
|
||||
arith_simplifier_plugin.cpp
|
||||
ast.cpp
|
||||
|
|
|
|||
|
|
@ -179,6 +179,7 @@ int main(int argc, char ** argv) {
|
|||
TST(api_polynomial);
|
||||
TST(api_pb);
|
||||
TST(api_datalog);
|
||||
TST(parametric_datatype);
|
||||
TST(cube_clause);
|
||||
TST(old_interval);
|
||||
TST(get_implied_equalities);
|
||||
|
|
|
|||
229
src/test/parametric_datatype.cpp
Normal file
229
src/test/parametric_datatype.cpp
Normal file
|
|
@ -0,0 +1,229 @@
|
|||
/*++
|
||||
Copyright (c) 2025 Microsoft Corporation
|
||||
|
||||
Module Name:
|
||||
|
||||
parametric_datatype.cpp
|
||||
|
||||
Abstract:
|
||||
|
||||
Test parametric datatypes with type variables.
|
||||
|
||||
Author:
|
||||
|
||||
Copilot 2025-10-12
|
||||
|
||||
--*/
|
||||
|
||||
#include "api/z3.h"
|
||||
#include "util/util.h"
|
||||
#include <iostream>
|
||||
|
||||
/**
|
||||
* Test polymorphic type variables with algebraic datatype definitions.
|
||||
*
|
||||
* This test uses Z3_mk_type_variable to create polymorphic type parameters alpha and beta,
|
||||
* defines a generic pair datatype, then instantiates it with concrete types using
|
||||
* Z3_mk_datatype_sort with parameters.
|
||||
*/
|
||||
static void test_parametric_pair() {
|
||||
std::cout << "test_parametric_pair\n";
|
||||
|
||||
Z3_config cfg = Z3_mk_config();
|
||||
Z3_context ctx = Z3_mk_context(cfg);
|
||||
Z3_del_config(cfg);
|
||||
|
||||
// Create type variables alpha and beta for polymorphic datatype
|
||||
Z3_symbol alpha_sym = Z3_mk_string_symbol(ctx, "alpha");
|
||||
Z3_symbol beta_sym = Z3_mk_string_symbol(ctx, "beta");
|
||||
Z3_sort alpha = Z3_mk_type_variable(ctx, alpha_sym);
|
||||
Z3_sort beta = Z3_mk_type_variable(ctx, beta_sym);
|
||||
|
||||
// Define parametric pair datatype with constructor mk-pair(first: alpha, second: beta)
|
||||
Z3_symbol pair_name = Z3_mk_string_symbol(ctx, "pair");
|
||||
Z3_symbol mk_pair_name = Z3_mk_string_symbol(ctx, "mk-pair");
|
||||
Z3_symbol is_pair_name = Z3_mk_string_symbol(ctx, "is-pair");
|
||||
Z3_symbol first_name = Z3_mk_string_symbol(ctx, "first");
|
||||
Z3_symbol second_name = Z3_mk_string_symbol(ctx, "second");
|
||||
|
||||
Z3_symbol field_names[2] = {first_name, second_name};
|
||||
Z3_sort field_sorts[2] = {alpha, beta}; // Use type variables
|
||||
unsigned sort_refs[2] = {0, 0}; // Not recursive references
|
||||
|
||||
Z3_constructor mk_pair_con = Z3_mk_constructor(
|
||||
ctx, mk_pair_name, is_pair_name, 2, field_names, field_sorts, sort_refs
|
||||
);
|
||||
|
||||
// Create the parametric datatype
|
||||
Z3_constructor constructors[1] = {mk_pair_con};
|
||||
Z3_sort pair = Z3_mk_datatype(ctx, pair_name, 1, constructors);
|
||||
|
||||
Z3_del_constructor(ctx, mk_pair_con);
|
||||
|
||||
std::cout << "Created parametric pair datatype\n";
|
||||
std::cout << "pair sort: " << Z3_sort_to_string(ctx, pair) << "\n";
|
||||
|
||||
// Now instantiate the datatype with concrete types
|
||||
Z3_sort int_sort = Z3_mk_int_sort(ctx);
|
||||
Z3_sort real_sort = Z3_mk_real_sort(ctx);
|
||||
|
||||
// Create (pair Int Real)
|
||||
Z3_sort params_int_real[2] = {int_sort, real_sort};
|
||||
Z3_sort pair_int_real = Z3_mk_datatype_sort(ctx, pair_name, 2, params_int_real);
|
||||
|
||||
// Create (pair Real Int)
|
||||
Z3_sort params_real_int[2] = {real_sort, int_sort};
|
||||
Z3_sort pair_real_int = Z3_mk_datatype_sort(ctx, pair_name, 2, params_real_int);
|
||||
|
||||
std::cout << "Instantiated pair with Int and Real\n";
|
||||
std::cout << "pair_int_real: " << Z3_sort_to_string(ctx, pair_int_real) << "\n";
|
||||
std::cout << "pair_real_int: " << Z3_sort_to_string(ctx, pair_real_int) << "\n";
|
||||
|
||||
// Get constructors and accessors from the instantiated datatypes
|
||||
Z3_func_decl mk_pair_int_real = Z3_get_datatype_sort_constructor(ctx, pair_int_real, 0);
|
||||
Z3_func_decl first_int_real = Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 0);
|
||||
Z3_func_decl second_int_real = Z3_get_datatype_sort_constructor_accessor(ctx, pair_int_real, 0, 1);
|
||||
|
||||
Z3_func_decl mk_pair_real_int = Z3_get_datatype_sort_constructor(ctx, pair_real_int, 0);
|
||||
Z3_func_decl first_real_int = Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 0);
|
||||
Z3_func_decl second_real_int = Z3_get_datatype_sort_constructor_accessor(ctx, pair_real_int, 0, 1);
|
||||
|
||||
std::cout << "Got constructors and accessors from instantiated datatypes\n";
|
||||
|
||||
// Create constants p1 : (pair Int Real) and p2 : (pair Real Int)
|
||||
Z3_symbol p1_sym = Z3_mk_string_symbol(ctx, "p1");
|
||||
Z3_symbol p2_sym = Z3_mk_string_symbol(ctx, "p2");
|
||||
Z3_ast p1 = Z3_mk_const(ctx, p1_sym, pair_int_real);
|
||||
Z3_ast p2 = Z3_mk_const(ctx, p2_sym, pair_real_int);
|
||||
|
||||
// Create (first p1) - should be Int
|
||||
Z3_ast first_p1 = Z3_mk_app(ctx, first_int_real, 1, &p1);
|
||||
|
||||
// Create (second p2) - should be Int
|
||||
Z3_ast second_p2 = Z3_mk_app(ctx, second_real_int, 1, &p2);
|
||||
|
||||
// Create the equality (= (first p1) (second p2))
|
||||
Z3_ast eq = Z3_mk_eq(ctx, first_p1, second_p2);
|
||||
|
||||
std::cout << "Created term: " << Z3_ast_to_string(ctx, eq) << "\n";
|
||||
|
||||
// Verify the term was created successfully
|
||||
ENSURE(eq != nullptr);
|
||||
|
||||
// Check that first_p1 and second_p2 have the same sort (Int)
|
||||
Z3_sort first_p1_sort = Z3_get_sort(ctx, first_p1);
|
||||
Z3_sort second_p2_sort = Z3_get_sort(ctx, second_p2);
|
||||
|
||||
std::cout << "Sort of (first p1): " << Z3_sort_to_string(ctx, first_p1_sort) << "\n";
|
||||
std::cout << "Sort of (second p2): " << Z3_sort_to_string(ctx, second_p2_sort) << "\n";
|
||||
|
||||
// Both should be Int
|
||||
ENSURE(Z3_is_eq_sort(ctx, first_p1_sort, int_sort));
|
||||
ENSURE(Z3_is_eq_sort(ctx, second_p2_sort, int_sort));
|
||||
|
||||
std::cout << "test_parametric_pair passed!\n";
|
||||
|
||||
Z3_del_context(ctx);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test Z3_mk_polymorphic_datatype API with explicit parameters.
|
||||
*
|
||||
* This test demonstrates the new API that explicitly accepts type parameters.
|
||||
*/
|
||||
static void test_polymorphic_datatype_api() {
|
||||
std::cout << "test_polymorphic_datatype_api\n";
|
||||
|
||||
Z3_config cfg = Z3_mk_config();
|
||||
Z3_context ctx = Z3_mk_context(cfg);
|
||||
Z3_del_config(cfg);
|
||||
|
||||
// Create type variables alpha and beta for polymorphic datatype
|
||||
Z3_symbol alpha_sym = Z3_mk_string_symbol(ctx, "alpha");
|
||||
Z3_symbol beta_sym = Z3_mk_string_symbol(ctx, "beta");
|
||||
Z3_sort alpha = Z3_mk_type_variable(ctx, alpha_sym);
|
||||
Z3_sort beta = Z3_mk_type_variable(ctx, beta_sym);
|
||||
|
||||
// Define parametric triple datatype with constructor mk-triple(first: alpha, second: beta, third: alpha)
|
||||
Z3_symbol triple_name = Z3_mk_string_symbol(ctx, "triple");
|
||||
Z3_symbol mk_triple_name = Z3_mk_string_symbol(ctx, "mk-triple");
|
||||
Z3_symbol is_triple_name = Z3_mk_string_symbol(ctx, "is-triple");
|
||||
Z3_symbol first_name = Z3_mk_string_symbol(ctx, "first");
|
||||
Z3_symbol second_name = Z3_mk_string_symbol(ctx, "second");
|
||||
Z3_symbol third_name = Z3_mk_string_symbol(ctx, "third");
|
||||
|
||||
Z3_symbol field_names[3] = {first_name, second_name, third_name};
|
||||
Z3_sort field_sorts[3] = {alpha, beta, alpha}; // Use type variables
|
||||
unsigned sort_refs[3] = {0, 0, 0}; // Not recursive references
|
||||
|
||||
Z3_constructor mk_triple_con = Z3_mk_constructor(
|
||||
ctx, mk_triple_name, is_triple_name, 3, field_names, field_sorts, sort_refs
|
||||
);
|
||||
|
||||
// Create the parametric datatype using Z3_mk_polymorphic_datatype
|
||||
Z3_constructor constructors[1] = {mk_triple_con};
|
||||
Z3_sort type_params[2] = {alpha, beta};
|
||||
Z3_sort triple = Z3_mk_polymorphic_datatype(ctx, triple_name, 2, type_params, 1, constructors);
|
||||
|
||||
Z3_del_constructor(ctx, mk_triple_con);
|
||||
|
||||
std::cout << "Created parametric triple datatype using Z3_mk_polymorphic_datatype\n";
|
||||
std::cout << "triple sort: " << Z3_sort_to_string(ctx, triple) << "\n";
|
||||
|
||||
// Now instantiate the datatype with concrete types
|
||||
Z3_sort int_sort = Z3_mk_int_sort(ctx);
|
||||
Z3_sort bool_sort = Z3_mk_bool_sort(ctx);
|
||||
|
||||
// Create (triple Int Bool)
|
||||
Z3_sort params_int_bool[2] = {int_sort, bool_sort};
|
||||
Z3_sort triple_int_bool = Z3_mk_datatype_sort(ctx, triple_name, 2, params_int_bool);
|
||||
|
||||
std::cout << "Instantiated triple with Int and Bool\n";
|
||||
std::cout << "triple_int_bool: " << Z3_sort_to_string(ctx, triple_int_bool) << "\n";
|
||||
|
||||
// Get constructors and accessors from the instantiated datatype
|
||||
Z3_func_decl mk_triple_int_bool = Z3_get_datatype_sort_constructor(ctx, triple_int_bool, 0);
|
||||
Z3_func_decl first_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 0);
|
||||
Z3_func_decl second_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 1);
|
||||
Z3_func_decl third_int_bool = Z3_get_datatype_sort_constructor_accessor(ctx, triple_int_bool, 0, 2);
|
||||
|
||||
std::cout << "Got constructors and accessors from instantiated datatype\n";
|
||||
|
||||
// Create a constant t : (triple Int Bool)
|
||||
Z3_symbol t_sym = Z3_mk_string_symbol(ctx, "t");
|
||||
Z3_ast t = Z3_mk_const(ctx, t_sym, triple_int_bool);
|
||||
|
||||
// Create (first t) - should be Int
|
||||
Z3_ast first_t = Z3_mk_app(ctx, first_int_bool, 1, &t);
|
||||
|
||||
// Create (third t) - should also be Int
|
||||
Z3_ast third_t = Z3_mk_app(ctx, third_int_bool, 1, &t);
|
||||
|
||||
// Create the equality (= (first t) (third t))
|
||||
Z3_ast eq = Z3_mk_eq(ctx, first_t, third_t);
|
||||
|
||||
std::cout << "Created term: " << Z3_ast_to_string(ctx, eq) << "\n";
|
||||
|
||||
// Verify the term was created successfully
|
||||
ENSURE(eq != nullptr);
|
||||
|
||||
// Check that first_t and third_t have the same sort (Int)
|
||||
Z3_sort first_t_sort = Z3_get_sort(ctx, first_t);
|
||||
Z3_sort third_t_sort = Z3_get_sort(ctx, third_t);
|
||||
|
||||
std::cout << "Sort of (first t): " << Z3_sort_to_string(ctx, first_t_sort) << "\n";
|
||||
std::cout << "Sort of (third t): " << Z3_sort_to_string(ctx, third_t_sort) << "\n";
|
||||
|
||||
// Both should be Int
|
||||
ENSURE(Z3_is_eq_sort(ctx, first_t_sort, int_sort));
|
||||
ENSURE(Z3_is_eq_sort(ctx, third_t_sort, int_sort));
|
||||
|
||||
std::cout << "test_polymorphic_datatype_api passed!\n";
|
||||
|
||||
Z3_del_context(ctx);
|
||||
}
|
||||
|
||||
void tst_parametric_datatype() {
|
||||
test_parametric_pair();
|
||||
test_polymorphic_datatype_api();
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue