wip lexer

This commit is contained in:
hugogogo
2026-04-28 22:04:23 +02:00
parent a2333a3ff1
commit 48221894c0
5 changed files with 165 additions and 9 deletions

View File

@@ -1,15 +1,112 @@
#include "computorv1.h"
int main(int ac, char **av)
int stop_errors(int err)
{
switch (err)
{
case -ERROR_UNKNOWN_TOKEN:
ft_putstr_fd("error: unknown token\n", STDERR_FILENO);
break;
default:
ft_putstr_fd("unknown error\n", STDERR_FILENO);
break;
}
exit(err);
}
int skip_whitespace(const char *input, int input_pos)
{
while (ft_isspace(input[input_pos]))
{
input_pos++;
}
return input_pos;
}
int token_is_plus(const char *input, int input_pos)
{
return (input[input_pos] == '+');
}
int lexerize(const char *input)
{
int token_count = 0;
int input_pos = 0;
int token_size = 0;
while (input[input_pos])
{
input_pos = skip_whitespace(input, input_pos);
if (input[input_pos] == '\0')
{
break;
}
token_size = token_is_plus(input, input_pos);
if (token_size)
{
tokens[token_count].type = TOKEN_PLUS;
tokens[token_count].var_value = '+';
}
if (token_size == 0)
{
stop_errors(-ERROR_UNKNOWN_TOKEN);
}
token_count++;
input_pos += token_size;
}
// Add end token
tokens[token_count].type = TOKEN_END;
tokens[token_count].var_value = '\0';
return 1;
}
int main(int ac, char **av)
{
int i;
int ret;
if (ac < 2)
{
return 0;
}
i = 0;
while(i < ac) {
ft_putstr_fd(av[i], STDOUT_FILENO);
ft_putchar_fd('\n', STDOUT_FILENO);
while (i < ac)
{
ft_putnbr(i);
ft_putstr(" : ");
ft_putstr(av[i]);
ft_putchar('\n');
i++;
}
return (0);
ret = lexerize(av[1]);
if (ret <= 0)
{
stop_errors(ret);
}
// tmp debug output
i = 0;
while (tokens[i].type != TOKEN_END)
{
ft_printf("token %i :\n type : %i\n value : ", i, tokens[i].type);
if (tokens[i].type == TOKEN_NUMBER)
{
ft_printf("%d\n", i, tokens[i].num_value);
}
else
{
ft_printf("%c\n", tokens[i].var_value);
}
i++;
}
return (0);
}