/*
 * Copyright (c) 2025 Quinn Stephens and the OSMORA team.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdlib.h>
#include "lexer.h"
#include "log.h"
#include "parser.h"
#include "parser/ast.h"

static const char *src = "int x;void **ptr;\nvoid *alloc();void test();\nint main();\n";

static void
print_func(struct ast_node *func)
{
    if (func->ptr_levels > 0) {
        log_debug("found function \"%.*s\" (returns %d-level pointer to %s)\n", func->name_len, func->name, func->ptr_levels, func->type->name);
    } else {
        log_debug("found function \"%.*s\" (returns %s)\n", func->name_len, func->name, func->type->name);
    }
}

static void
print_var(struct ast_node *var)
{
    if (var->ptr_levels > 0) {
        log_debug("found variable \"%.*s\" (%d-level pointer to %s)\n", var->name_len, var->name, var->ptr_levels, var->type->name);
    } else {
        log_debug("found variable \"%.*s\" (%s)\n", var->name_len, var->name, var->type->name);
    }
}

static void
print_syms(struct hashmap *syms)
{
    struct list *list;
    struct ast_node *node;

    /* Iterate hashmap rows */
    for (size_t r = 0; r < syms->row_count; r++) {
        /* Iterate row entries */
        list = &syms->rows[r];
        node = (struct ast_node *)list->head;
        while (node != (struct ast_node *)list) {
            if (node->kind == NOK_FUNCTION) {
                print_func(node);
            } else if (node->kind == NOK_VARIABLE) {
                print_var(node);
            }

            node = (struct ast_node *)node->hashmap_entry.list_entry.next;
        }
    }
}

int
main(int argc, char **argv)
{
    struct lexer lexer;
    struct parser parser;
    bool success;

    (void)argc;
    (void)argv;

    if (!lexer_init(&lexer, src)) {
        log_error("failed to initialize lexer\n");
        return EXIT_FAILURE;
    }

    parser.lexer = &lexer;
    parser.syms.rows = NULL;
    success = parser_parse(&parser);
    if (parser.syms.rows != NULL) {
        print_syms(&parser.syms);
    }

    return success ? EXIT_SUCCESS:EXIT_FAILURE;
}