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/*
Copyright (C) 2021 Fredrik Johansson
This file is part of Calcium.
Calcium is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "calcium.h"
#include "fexpr.h"
#include "fexpr_builtin.h"
void
fexpr_randtest_atom1(fexpr_t expr, flint_rand_t state)
{
if (n_randint(state, 2))
{
if (n_randint(state, 10) == 5)
fexpr_set_si(expr, (slong) n_randtest(state));
else
fexpr_set_si(expr, ((slong) n_randint(state, 3)) - 1);
}
else
{
if (n_randint(state, 2))
fexpr_set_symbol_builtin(expr, FEXPR_alpha);
else
fexpr_set_symbol_builtin(expr, FEXPR_beta);
}
}
void
fexpr_randtest1(fexpr_t expr, flint_rand_t state, slong max_leaves, slong max_depth)
{
if (max_leaves <= 1 || max_depth <= 1 || n_randint(state, 10) == 0)
{
fexpr_randtest_atom1(expr, state);
}
else
{
slong i, nargs;
fexpr_t f;
fexpr_ptr args;
fexpr_init(f);
fexpr_randtest1(f, state, max_leaves / 4, max_depth - 1);
max_leaves -= fexpr_num_leaves(f);
nargs = n_randint(state, 1 + FLINT_MIN(5, max_leaves / max_depth));
args = _fexpr_vec_init(nargs);
for (i = 0; i < nargs; i++)
{
fexpr_randtest1(args + i, state, max_leaves, max_depth - 1);
max_leaves -= fexpr_num_leaves(args + i);
}
fexpr_call_vec(expr, f, args, nargs);
_fexpr_vec_clear(args, nargs);
fexpr_clear(f);
}
}
int
fexpr_replace_vec_naive(fexpr_t res, const fexpr_t expr, const fexpr_vec_t xs, const fexpr_vec_t ys)
{
slong i, num_rules;
num_rules = xs->length;
if (num_rules != ys->length)
{
flint_printf("fexpr_replace_vec: vectors don't match\n");
flint_abort();
}
for (i = 0; i < num_rules; i++)
{
if (fexpr_equal(expr, xs->entries + i))
{
fexpr_set(res, ys->entries + i);
return 1;
}
}
if (fexpr_is_atom(expr))
{
fexpr_set(res, expr);
return 0;
}
else
{
fexpr_ptr args;
fexpr_t func, view;
slong nargs;
int changed;
nargs = fexpr_nargs(expr);
args = NULL;
fexpr_init(func);
fexpr_view_func(view, expr);
changed = fexpr_replace_vec_naive(func, view, xs, ys);
if (nargs >= 1)
{
args = _fexpr_vec_init(nargs);
fexpr_view_arg(view, expr, 0);
for (i = 0; i < nargs; i++)
{
changed |= fexpr_replace_vec_naive(args + i, view, xs, ys);
if (i < nargs - 1)
fexpr_view_next(view);
}
fexpr_call_vec(res, func, args, nargs);
_fexpr_vec_clear(args, nargs);
}
else
{
fexpr_call0(res, func);
}
fexpr_clear(func);
return changed;
}
}
int main()
{
slong iter;
flint_rand_t state;
flint_printf("replace...");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 10000 * calcium_test_multiplier(); iter++)
{
fexpr_t expr, res1, res2, res3;
fexpr_vec_t xs, ys;
slong i, len;
int changed1, changed2, changed3;
fexpr_init(expr);
fexpr_init(res1);
fexpr_init(res2);
fexpr_init(res3);
fexpr_randtest1(expr, state, 1 + n_randint(state, 100), 2 + n_randint(state, 10));
fexpr_randtest1(res1, state, 5, 2 + n_randint(state, 5));
fexpr_randtest1(res2, state, 5, 2 + n_randint(state, 5));
len = n_randint(state, 4);
fexpr_vec_init(xs, len);
fexpr_vec_init(ys, len);
for (i = 0; i < len; i++)
{
fexpr_randtest1(xs->entries + i, state, 1 + n_randint(state, 3), 1 + n_randint(state, 2));
fexpr_randtest1(ys->entries + i, state, 1 + n_randint(state, 10), 2 + n_randint(state, 5));
}
if (xs->length == 1 && n_randint(state, 2))
{
changed1 = fexpr_replace(res1, expr, xs->entries, ys->entries);
/* also test contains() */
if (n_randint(state, 2))
changed1 = fexpr_contains(expr, xs->entries);
}
else
changed1 = fexpr_replace_vec(res1, expr, xs, ys);
fexpr_set(res2, expr);
if (xs->length == 1 && n_randint(state, 2))
changed2 = fexpr_replace(res2, res2, xs->entries, ys->entries);
else
changed2 = fexpr_replace_vec(res2, res2, xs, ys);
changed3 = fexpr_replace_vec_naive(res3, expr, xs, ys);
if ((changed1 != changed3) || !fexpr_equal(res1, res3))
{
flint_printf("FAIL\n");
flint_printf("expr = "); fexpr_print(expr); flint_printf("\n\n");
flint_printf("xs = "); fexpr_vec_print(xs); flint_printf("\n\n");
flint_printf("ys = "); fexpr_vec_print(ys); flint_printf("\n\n");
flint_printf("res1 = "); fexpr_print(res1); flint_printf("\n\n");
flint_printf("res3 = "); fexpr_print(res3); flint_printf("\n\n");
flint_printf("changed1 = %d, changed3 = %d\n\n", changed1, changed3);
flint_abort();
}
if ((changed1 != changed2) || !fexpr_equal(res1, res2))
{
flint_printf("FAIL (aliasing)\n");
flint_printf("expr = "); fexpr_print(expr); flint_printf("\n\n");
flint_printf("xs = "); fexpr_vec_print(xs); flint_printf("\n\n");
flint_printf("ys = "); fexpr_vec_print(ys); flint_printf("\n\n");
flint_printf("res1 = "); fexpr_print(res1); flint_printf("\n\n");
flint_printf("res2 = "); fexpr_print(res2); flint_printf("\n\n");
flint_printf("changed1 = %d, changed2 = %d\n\n", changed1, changed2);
flint_abort();
}
fexpr_vec_clear(xs);
fexpr_vec_clear(ys);
fexpr_clear(expr);
fexpr_clear(res1);
fexpr_clear(res2);
fexpr_clear(res3);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
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