1 files changed, 53 insertions, 0 deletions
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..319f943
--- /dev/null
+++ b/main.c
@@ -0,0 +1,53 @@
+#include "cgen.h"
+#include "lex.h"
+#include "parse.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+    struct lex l = {0};
+    struct ast p = {0};
+    struct cgen c = {0};
+    FILE *f = stdin;
+    int opened = 0, ret = EXIT_FAILURE;
+
+    if (argc != 2)
+    {
+        fprintf(stderr, "%s: error: missing input file\n", *argv);
+        goto end;
+    }
+    else if (strcmp(argv[1], "-"))
+    {
+        if (!(f = fopen(argv[1], "rb")))
+        {
+            fprintf(stderr, "failed to open %s: %s\n", argv[1],
+                strerror(errno));
+            goto end;
+        }
+
+        opened = 1;
+        l.loc.f = argv[1];
+    }
+    else
+        l.loc.f = "stdin";
+
+    if (lex(&l, f) || parse(&l, &p) || cgen(&p, &c))
+        goto end;
+
+    ret = EXIT_SUCCESS;
+
+end:
+    if (opened && fclose(f))
+    {
+        perror("fclose(3)");
+        ret = EXIT_FAILURE;
+    }
+
+    lex_free(&l);
+    ast_free(&p);
+    cgen_free(&c);
+    return ret;
+}