Basic parser

Signed-off-by: CHatingPython <chatingpython@gmail.com>

furc/src/main.cpp

@@ -1,15 +1,10 @@
-#include "furc/front/lexer.hpp"
+#include "furc/front/parser.hpp"
 
 #include <iostream>
 
 int main(void) {
-    furc::front::lexer lexer("<TEMP>", "func main() {\n    return 0;\n}");
-
-    furc::front::token token = {};
-    while (!furc::front::is_token_type_empty((token = lexer.next_token()).type)) {
-        std::cout << token << '\n';
-    }
-    if (token.type == furc::front::token_t::Error) std::cout << token << '\n';
+    furc::front::parser parser("<TEMP>", "func main() {\n    return;\n}");
+    std::cout << parser.parse() << '\n';
 
     return 0;
 }