1 files changed, 59 insertions, 0 deletions
diff --git a/include/pdp_types.h b/include/pdp_types.h
index 32ab03f..59fc0d2 100644
--- a/include/pdp_types.h
+++ b/include/pdp_types.h
@@ -19,6 +19,7 @@
  *
  */
 
+/* some typedefs and utility classes */
 
 #ifndef PDP_TYPES_H
 #define PDP_TYPES_H
@@ -33,4 +34,62 @@ typedef unsigned short     u16;
 typedef unsigned long      u32;
 typedef unsigned long long u64;
 
+
+#ifndef __cplusplus
+typedef int bool;
+#define true 1;
+#define false 0;
+#endif
+
+
+typedef struct _pdp t_pdp;
+typedef void (*t_pdp_packet_method1)(t_pdp *);              /* dst */
+typedef void (*t_pdp_packet_method2)(t_pdp *, t_pdp *);     /* dst, src */
+
+
+/*
+  The pdp symbol type manages the pdp name space. It maps
+  gives a symbol to something in a certain name space:
+
+  * packet classes 
+  * forth words
+  * processor instances
+  * type description lists (for accelerating type matching)
+
+  symbols have an infinite lifespan, so this is also true
+  for things attached to it.
+
+*/
+
+/* the pdp symbol type */
+typedef struct _pdp_symbol
+{
+    /* the symbol name */
+    char *s_name;
+
+    /* the items this symbol is associated to in different namespaces */
+    struct _pdp_forthword_spec *s_word_spec; // a forth word
+    struct _pdp_list *s_processor;           // an atom processor object
+    struct _pdp_class *s_class;              // packet class
+    struct _pdp_list *s_type;                // a type description
+
+    struct _pdp_symbol *s_next;
+
+} t_pdp_symbol;
+
+static inline void _pdp_symbol_clear_namespaces(t_pdp_symbol *s)
+{
+    s->s_word_spec = 0;
+    s->s_processor = 0;
+    s->s_class = 0;
+    s->s_type = 0;
+}
+
+
+
+/* generic packet subheader */
+//typedef unsigned char t_raw[PDP_SUBHEADER_SIZE];
+typedef unsigned int t_raw;
+
+
 #endif