initial commit

.gitignore

@@ -0,0 +1,2 @@
+.idea
+*.iml

main.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdint.h>
+
+typedef enum {
+    LITERAL
+    ADD
+    SUB
+    MUL
+    DIV
+    GROUP
+} expr_kind;
+
+typedef struct {
+    expr_kind tag;
+    union {
+
+    } value;
+} expr;
+
+int main(int argc, char **argv) {
+    if (argc == 1) {
+        printf("provide me an argument please\n");
+        return 1;
+    }
+
+    char *input = argv[0];
+
+    return 0;
+}
+
+int parse_expr(char *input, size_t *offset) {}
+
+int parse_factor(char *input, size_t *offset) {}
+
+int parse_term(char *input, size_t *offset) {}
+
+int parse_literal(char *input, size_t *offset) {}