42sh/src/parser/parser.c

#include "parser.h"

#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "lexer/lexer.h"
#include "utils/lists/lists.h"

// === Static functions

/* Returns true if c is a command terminator, false otherwise
 */
static bool isterminator(char c)
{
    switch (c)
    {
    case '\n':
    case ';':
    case EOF:
        return true;
    default:
        return false;
    }
}

/* Parses a simple list of words (command and arguments)
 * and returns the resulting ast
 */

// === Functions

struct ast *get_ast()
{
    struct list *result_list = NULL;
    struct ast *current_node = NULL;

    char *token = peek_token();
    if (token != NULL)
    {
        puts("Internal error: cannot get the following token");
        return NULL;
    }

    while (token[0] != EOF)
    {
        struct ast *cmd = parse_simple_command();
        result_list = list_append(result_list, cmd);
    }

    struct ast *result = ast_create_list(result_list);
    return result;
}

// TODO
struct ast *get_ast_str(char *command)
{
    (void)command;
    return NULL;
}