parser: Add the bool type

This commit introduces a new type for booleans. There is no code
generation for this type yet. The intention of this commit is to enable
flow control in the near future.

Signed-off-by: Carlos Maniero <carlos@maniero.me>
Reviewed-by: Johnny Richard <johnny@johnnyrichard.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lexer.h b/src/lexer.h
index dd442cc..899c0aa 100644
--- a/src/lexer.h
+++ b/src/lexer.h
@@ -59,6 +59,8 @@ typedef enum
   TOKEN_KEYWORD_RETURN,
   TOKEN_KEYWORD_FN,
   TOKEN_KEYWORD_LET,
+  TOKEN_TRUE,
+  TOKEN_FALSE,
 
   TOKEN_UNKNOWN
 } token_kind_t;