altos/lisp: Make read() return eof atom on end of file

[fw/altos] / src / lisp / ao_lisp.h

diff --git a/src/lisp/ao_lisp.h b/src/lisp/ao_lisp.h
index d265ea7bb9db23daab33404eb4691b63d1e533bc..6122a2edf5f6406ad991afe10a29bc459ecad3f2 100644 (file)
--- a/src/lisp/ao_lisp.h
+++ b/src/lisp/ao_lisp.h
@@ -42,6 +42,7 @@ extern uint8_t ao_lisp_const[AO_LISP_POOL_CONST];
 #define _ao_lisp_atom_delay    _atom("delay")
 #define _ao_lisp_atom_eval     _atom("eval")
 #define _ao_lisp_atom_read     _atom("read")
+#define _ao_lisp_atom_eof      _atom("eof")
 #else
 #include "ao_lisp_const.h"
 #ifndef AO_LISP_POOL
@@ -76,6 +77,7 @@ extern uint16_t               ao_lisp_top;
 #define AO_LISP_DIVIDE_BY_ZERO 0x02
 #define AO_LISP_INVALID                0x04
 #define AO_LISP_UNDEFINED      0x08
+#define AO_LISP_EOF            0x10
 
 extern uint8_t         ao_lisp_exception;