OMPL/src/ombs_src/c/lexer.c

#include <stdio.h>
#include <stdlib.h>
#define true 1
#define false 0
#define STR 0
#define VAR 1
#define MISC 2

typedef struct token {
  char *str;
  char type;
  struct token *chain;
} token;

char *spec = "()[]!&^|<>~%?=+-";
char *char_line;
token *token_start = NULL;
token *token_head = NULL;

int get_str_size(char *str) {
  int size = 0;
  for (char *s = str; *s != '\0'; s++)
    size++;
  return size;
}

char *get_middle(char *str, int start, int end) {
  int size = end - start + 1;
  char *str2 = (char *)malloc(sizeof(char) * size + 1);
  if (!str2)
    return NULL;
  for (int i = 0; i < size; i++)
    str2[i] = str[start + i];
  str2[size] = 0;
  return str2;
}

int create_token_from_line(int start, int end) {
  char *str = get_middle(char_line, start, end);
  if (!str)
    return 1;
  token *t = (token *)malloc(sizeof(token));
  if (!t)
    return 2;
  if (!token_start)
    token_head = t;
  else if (!token_head)
    token_start->chain = token_head = t;
  else {
    token_head->chain = t;
    token_head = t;
  }
  return 0;
}

int Main(char *line) {
  int start = 0;
  char mode = MISC;
  for (int c = 0; c < get_str_size(line); c++) {
  }
  return 0;
}