src/token.cc


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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <token.h>

void
Token::init(TokenType type, char *lexeme, unsigned int line)
{
  this->type = type;
  this->lexeme = lexeme;
  this->line = line;
  this->string = NULL;
}

char *
Token::to_string(void)
{
  unsigned int line_length = snprintf(NULL, 0, "%ul", line) - 1;
  /* 2: ": ", 1: "\0" */
  unsigned int final_size = strlen(lexeme) + line_length + 2 + 1;

  char *result = (char *) calloc(1, final_size);
  snprintf(result, final_size, "%d: %s", line, lexeme);
  string = result;

  return result;
}

void
Token::clean(void)
{
  if (string != NULL)
    free(string);
}