kern: np: Add support for return statements

This commit introduces lexical, parsing and code generation support for
the return statements. As of now, one is only able to return unsigned integers
but this will be expanded upon in the future

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/sys/include/np/lex.h b/src/sys/include/np/lex.h
index ebd6f32..ba581b7 100644
--- a/src/sys/include/np/lex.h
+++ b/src/sys/include/np/lex.h
@@ -41,6 +41,7 @@ struct np_work;
 #define TOKEN_BEGIN "begin"
 #define TOKEN_PROC "proc"
 #define TOKEN_END "end"
+#define TOKEN_RETURN "return"
 
 /* Types */
 #define TOKEN_U8    "u8"
@@ -93,6 +94,7 @@ typedef enum {
     TT_BEGIN,           /* 'begin' */
     TT_PROC,            /* 'proc' */
     TT_END,             /* 'end' */
+    TT_RETURN,          /* 'return' */
 } tt_t;
 
 typedef uint64_t tokval_t;