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

int x = y;

--------------------------------------------------------------------------------

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (predefined_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (identifier)))))))

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

int @var = @const;

--------------------------------------------------------------------------------

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (predefined_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (identifier)))))))

================================================================================
identifiers with contextual keyword names
================================================================================

int nint = 0;
int nuint = 0;

--------------------------------------------------------------------------------

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (predefined_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (predefined_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal)))))))

================================================================================
unicode identifiers
================================================================================

var under_score = 0;
var with1number = 0;
var varæble = 0;
var Переменная = 0;
var first‿letter = 0;
var ග්‍රහලෝකය = 0;
var _كوكبxxx = 0;

--------------------------------------------------------------------------------

(compilation_unit
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal))))))
  (global_statement
    (local_declaration_statement
      (variable_declaration
        type: (implicit_type)
        (variable_declarator
          name: (identifier)
          (equals_value_clause
            (integer_literal)))))))