1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/pp.h b/src/include/pp.h
new file mode 100644
index 0000000..d82907c
--- /dev/null
+++ b/src/include/pp.h
@@ -0,0 +1,55 @@
+#ifndef PP_H
+#define PP_H
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "util.h"
+#include "syntax.h"
+
+/* TODO */
+typedef struct MACRO_STRUC {
+   char* id;
+   char* val;
+} macro_t;
+
+/* 
+   preprocessor struct
+
+   TODO: keep track of macros
+*/
+typedef struct PP_STRUC {
+   /* original source */
+   char* src;
+
+   /* pre-processed source */
+   char* psrc;
+
+   /* what the preprocessor is looking at right now */
+   enum PP_STATE {
+      PP_STATE_REG,  /* regular */
+      PP_STATE_STR,  /* string */
+      PP_STATE_COM,  /* comment */
+      PP_STATE_ESC,  /* escaped character in string */
+      /* PP_STATE_MCO, */  /* macro */
+   } state;
+} pp_t;
+
+/* creates a new preprocessor from some source code */
+pp_t* pp_init(char*);
+
+/* destroys the preprocessor **but not the pre-processed source** */
+void pp_destroy(pp_t*);
+
+/* copy over the current character from src to psrc */
+void pp_cpy_char(pp_t*);
+
+void pp_do_reg(pp_t*);
+void pp_do_str(pp_t*);
+void pp_do_com(pp_t*);
+
+/* run the preprocessor */
+void pp_run(pp_t*);
+
+#endif
+