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, 8 insertions, 2 deletions

diff --git a/src/ast.h b/src/ast.h
index 69fc918..80148dc 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -22,7 +22,8 @@
 
 typedef enum
 {
-  TYPE_I32
+  TYPE_I32,
+  TYPE_BOOL
 } type_t;
 
 typedef struct ast_node_t ast_node_t;
@@ -67,12 +68,14 @@ typedef struct ast_binary_operation_t
 
 typedef enum
 {
-  AST_LITERAL_INTEGER
+  AST_LITERAL_INTEGER,
+  AST_LITERAL_BOOL
 } ast_literal_kind_t;
 
 typedef union
 {
   uint32_t integer;
+  bool boolean;
 } ast_literal_value_t;
 
 typedef struct ast_literal_t
@@ -148,6 +151,9 @@ ast_node_t *
 ast_node_new_literal_integer(uint32_t number);
 
 ast_node_t *
+ast_node_new_literal_bool(bool boolean);
+
+ast_node_t *
 ast_node_new_variable(ast_identifier_t *identifier);
 
 ast_node_t *