lexer_token_utils.c

Bu dosyanın dokümantasyonuna git.

#include "../../include/minishell.h"
#include <stdlib.h> // free, malloc
 
t_token *create_token(t_token_type type, char *value, t_quote_type quote_type)
{
    t_token *new_token;
 
    new_token = (t_token *)ft_calloc(1, sizeof(t_token));
    if (!new_token)
        return (NULL);
    if (value)
    {
        new_token->value = ft_strdup(value);
        if (!new_token->value)
        {
            free(new_token);
            return (NULL);
        }
    }
    else
        new_token->value = NULL;
    new_token->type = type;
    new_token->quote_type = quote_type;
    return (new_token);
}
 
int append_token(t_shell *shell, t_token_type type, char *value,
        t_quote_type quote_type)
{
    t_token *token;
    t_list *node;
 
    token = create_token(type, value, quote_type);
    if (!token)
        return (0);
    node = ft_lstnew(token);
    if (!node)
    {
        free(token->value);
        free(token);
        return (0);
    }
    ft_lstadd_back(&shell->token_list, node);
    return (1);
}
 
void    mark_last_token_adjacent(t_shell *shell)
{
    t_list  *last;
    t_token *token;
 
    last = ft_lstlast(shell->token_list);
    if (last)
    {
        token = (t_token *)last->content;
        token->adjacent = 1;
    }
}
 
static void merge_token_pair(t_list *curr, t_list *next)
{
    t_token *curr_tok;
    t_token *next_tok;
    char    *merged;
 
    curr_tok = (t_token *)curr->content;
    next_tok = (t_token *)next->content;
    merged = ft_strjoin(curr_tok->value, next_tok->value);
    free(curr_tok->value);
    curr_tok->value = merged;
    curr->next = next->next;
    free_token_content(next->content);
    free(next);
}
 
void    merge_adjacent_tokens(t_shell *shell)
{
    t_list  *curr;
    t_token *curr_tok;
    t_token *next_tok;
 
    curr = shell->token_list;
    while (curr && curr->next)
    {
        curr_tok = (t_token *)curr->content;
        next_tok = (t_token *)curr->next->content;
        if (curr_tok->type == TOKEN_WORD && next_tok->type == TOKEN_WORD
            && next_tok->adjacent == 1)
            merge_token_pair(curr, curr->next);
        else
            curr = curr->next;
    }
}