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// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
#include "prelude.h"
#include "bfs.h"
#include "diag.h"
#include "tests.h"
#include "trie.h"
#include <stdlib.h>
#include <string.h>
static const char *keys[] = {
"foo",
"bar",
"baz",
"qux",
"quux",
"quuux",
"quuuux",
"pre",
"pref",
"prefi",
"prefix",
"AAAA",
"AADD",
"ABCD",
"DDAA",
"DDDD",
"<<<",
"<<<>>>",
"<<<<<<",
"<<<<<<>>>>>>",
">>>>>>",
">>><<<",
">>>",
};
static const size_t nkeys = countof(keys);
void check_trie(void) {
struct trie trie;
trie_init(&trie);
for (size_t i = 0; i < nkeys; ++i) {
bfs_check(!trie_find_str(&trie, keys[i]));
const char *prefix = NULL;
for (size_t j = 0; j < i; ++j) {
if (strncmp(keys[i], keys[j], strlen(keys[j])) == 0) {
if (!prefix || strcmp(keys[j], prefix) > 0) {
prefix = keys[j];
}
}
}
struct trie_leaf *leaf = trie_find_prefix(&trie, keys[i]);
if (prefix) {
bfs_verify(leaf);
bfs_check(strcmp(prefix, leaf->key) == 0);
} else {
bfs_check(!leaf);
}
leaf = trie_insert_str(&trie, keys[i]);
bfs_verify(leaf);
bfs_check(strcmp(keys[i], leaf->key) == 0);
bfs_check(leaf->length == strlen(keys[i]) + 1);
}
{
size_t i = 0;
for_trie (leaf, &trie) {
bfs_check(leaf == trie_find_str(&trie, keys[i]));
bfs_check(!leaf->prev || leaf->prev->next == leaf);
bfs_check(!leaf->next || leaf->next->prev == leaf);
++i;
}
bfs_check(i == nkeys);
}
for (size_t i = 0; i < nkeys; ++i) {
struct trie_leaf *leaf = trie_find_str(&trie, keys[i]);
bfs_verify(leaf);
bfs_check(strcmp(keys[i], leaf->key) == 0);
bfs_check(leaf->length == strlen(keys[i]) + 1);
trie_remove(&trie, leaf);
leaf = trie_find_str(&trie, keys[i]);
bfs_check(!leaf);
const char *postfix = NULL;
for (size_t j = i + 1; j < nkeys; ++j) {
if (strncmp(keys[i], keys[j], strlen(keys[i])) == 0) {
if (!postfix || strcmp(keys[j], postfix) < 0) {
postfix = keys[j];
}
}
}
leaf = trie_find_postfix(&trie, keys[i]);
if (postfix) {
bfs_verify(leaf);
bfs_check(strcmp(postfix, leaf->key) == 0);
} else {
bfs_check(!leaf);
}
}
for_trie (leaf, &trie) {
bfs_check(false, "trie should be empty");
}
// This tests the "jump" node handling on 32-bit platforms
size_t longsize = 1 << 20;
char *longstr = malloc(longsize);
bfs_verify(longstr);
memset(longstr, 0xAC, longsize);
bfs_check(!trie_find_mem(&trie, longstr, longsize));
bfs_check(trie_insert_mem(&trie, longstr, longsize));
memset(longstr + longsize / 2, 0xAB, longsize / 2);
bfs_check(!trie_find_mem(&trie, longstr, longsize));
bfs_check(trie_insert_mem(&trie, longstr, longsize));
memset(longstr, 0xAA, longsize / 2);
bfs_check(!trie_find_mem(&trie, longstr, longsize));
bfs_check(trie_insert_mem(&trie, longstr, longsize));
free(longstr);
trie_destroy(&trie);
}
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