main.c

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#include <stdio.h>
#include <stdlib.h>             /* EXIT_SUCCESS, etc. */
#include <errno.h>
#include <string.h>
#include "out.h"
#include "in.h"
#include "lexer.h"
#include "parser.h"
#include "main.h"

#define EVAL(expr, err) if (expr) { errno = err; perror(pcerr); iret = EXIT_FAILURE; goto cleanup; }

int main() {
  int iret = EXIT_SUCCESS;
  const char *pcerr = "main.c main()";
  char *pc;

  /* Unsuccessful read. */
  EVAL(in(stdin, &pc) == EXIT_FAILURE, EIO);
  /* Else, perform tokenization and thence parse. */
  EVAL(parse(pc) != EXIT_SUCCESS, EINVAL);

 cleanup:
  free(pc);
  return iret;
}

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