added parsing for function literals

src/ast/expressions/function.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "ast/ast.hpp"
+#include "ast/expressions/identifier.hpp"
+#include "ast/statements/block.hpp"
+#include "token/token.hpp"
+
+#include <string>
+
+namespace ast {
+    struct function_literal : expression {
+        function_literal(token::token);
+        token::token token;
+        std::vector<identifier*> parameters;
+        ast::block_stmt* block;
+
+        std::string token_literal() const override;
+        std::string str() const override;
+        ~function_literal();
+    };
+} // namespace ast