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#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "alloc.h"
#include "codegen.h"
#include "errors.h"
#include "lexer.h"
#include "parser.h"
static char *readfile(const char *, size_t *);
int
main(int argc, char **argv)
{
if (argc != 2) {
fputs("Usage: oryx file\n", stderr);
exit(EXIT_FAILURE);
}
size_t srclen;
char *src = readfile(argv[1], &srclen);
struct lexemes toks = lexstring(src, srclen);
struct ast ast = parsetoks(toks);
codegen(ast, toks);
#if DEBUG
free(src);
lexemes_free(toks);
ast_free(ast);
#endif
return EXIT_SUCCESS;
}
char *
readfile(const char *filename, size_t *n)
{
int fd = open(filename, O_RDONLY);
if (fd == -1)
err("open: %s", filename);
struct stat sb;
if (fstat(fd, &sb) == -1)
err("fstat: %s", filename);
char *p = bufalloc(NULL, sb.st_size + 4, 1);
ssize_t nr;
for (size_t off = 0; (nr = read(fd, p + off, sb.st_blksize)) > 0; off += nr)
;
if (nr == -1)
err("read: %s", filename);
for (int i = 0; i < 4; i++)
p[sb.st_size + i] = 0;
*n = sb.st_size;
close(fd);
return p;
}
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