new assembler: tokenizer

1 files changed, 25 insertions, 0 deletions

diff --git a/src/as_main.c b/src/as_main.c
new file mode 100644
index 0000000..8585fa1
--- /dev/null
+++ b/src/as_main.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+#include "as_tokenizer.h"
+
+// AST
+// ===
+//
+// <prog> ::= <stmts>
+// <stmts> ::= <stmt> <newline> | <stmt> <stmts> <newline>
+// <stmt> ::= <tag> <instr> | <instr> | <tag>
+// <instr> ::= <op> | <op> <arg> | <op> <label>
+// <tag> ::= <label> :
+// <op> ::= add | sub | mul | div | mod | eq
+
+int main(int argc, char** argv) {
+    if (argc != 2) {
+        fprintf(stderr, "Usage: fvm-as <inputfile>\n");
+        return 1;
+    }
+
+    FILE *fp = fopen(argv[1], "r");
+    TokenStream* ts = makeTokenStream(fp);
+    return 0;
+}
+