=======================================
basic indentifiers
=======================================

int x = y;

---

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        (predefined_type)
        (variable_declarator (identifier) (equals_value_clause (identifier)))))))

=======================================
indentifiers with keyword names
=======================================

int @var = @const;

---

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        (predefined_type)
        (variable_declarator (identifier) (equals_value_clause (identifier)))))))

=======================================
indentifiers with contextual keyword names
=======================================

int nint = 0;
int nuint = 0;

---

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        (predefined_type)
        (variable_declarator (identifier) (equals_value_clause (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        (predefined_type)
        (variable_declarator (identifier) (equals_value_clause (integer_literal)))))))
