Add git hooks

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

furc/include/furc/ast/declaration.hpp

@@ -50,22 +50,6 @@ class function_definition_node : public function_declarartion_node {
 public:
     function_definition_node(front::token name, function_body_handle&& body)
       : function_declarartion_node(name), m_body(std::move(body)) {}
-
-    ~function_definition_node() override = default;
-
-    function_definition_node(function_definition_node&& other) noexcept
-      : function_declarartion_node(std::move(other)), m_body(std::move(other.m_body)) {}
-
-    function_definition_node(const function_definition_node&) = delete;
-
-    function_definition_node& operator=(function_definition_node&& other) noexcept {
-        if (this == &other) return *this;
-        function_declarartion_node::operator=(std::move(other));
-        m_body = std::move(other.m_body);
-        return *this;
-    }
-
-    function_definition_node& operator=(const function_definition_node&) = delete;
 public:
     declaration_node_t declaration_type() const override { return declaration_node_t::FunctionDefinition; }
 

furc/include/furc/ast/literal.hpp

@@ -32,7 +32,7 @@ public:
     const handle<std::string_view>& value() const { return m_value; }
 public:
     std::ostream& print(std::ostream& os) const override {
-        if (m_value.has_error()) return os << (std::string)m_value;
+        if (m_value.has_error()) return os << m_value.error();
         return os << "string literal (" << *m_value << ")";
     }
 private: