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, 15 insertions, 0 deletions

diff --git a/src/parser.c b/src/parser.c
index baa2ef5..22313a6 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -84,6 +84,11 @@ parser_parse_type(parser_t *parser, type_t *type)
     return true;
   }
 
+  if (string_view_eq(token.value, string_view_from_str("bool"))) {
+    *type = TYPE_BOOL;
+    return true;
+  }
+
   parser_error_t error;
   error.token = token;
 
@@ -102,6 +107,12 @@ parser_literal_integer_node(token_t *token)
   return ast_node_new_literal_integer(atoi(number_as_str));
 }
 
+static ast_node_t *
+parser_literal_bool_node(token_t *token)
+{
+  return ast_node_new_literal_bool(token->kind == TOKEN_TRUE);
+}
+
 static ast_binary_operation_kind_t
 token_to_binary_operation_kind(token_t *token)
 {
@@ -128,6 +139,10 @@ parser_parse_factor(parser_t *parser)
   switch (token.kind) {
     case TOKEN_NUMBER:
       return parser_literal_integer_node(&token);
+    case TOKEN_TRUE:
+      return parser_literal_bool_node(&token);
+    case TOKEN_FALSE:
+      return parser_literal_bool_node(&token);
     case TOKEN_OPAREN: {
       ast_node_t *expression = parser_parse_expression(parser);