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trim parametric datatype test

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2025-10-15 21:39:39 +02:00
parent 0d85b86334
commit f324c5286c
1 changed files with 1 additions and 108 deletions
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109
src/test/parametric_datatype.cpp
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@ -19,117 +19,11 @@ Author:
#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.
* This test demonstrates the API that explicitly accepts type parameters.
*/
static void test_polymorphic_datatype_api() {
std::cout << "test_polymorphic_datatype_api\n";
@ -224,6 +118,5 @@ static void test_polymorphic_datatype_api() {
}
void tst_parametric_datatype() {
test_parametric_pair();
test_polymorphic_datatype_api();
}