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===========
Expressions
===========

void main() {
    3 + b.c;
    a in b();
    3 = 3;
    x.y.z();
    (3 + 1).to_string();
    if (!yield x()) {
    }
    10u + 10f + 10U + 10.F + 10e-3f;
}

---

(source_file
  (namespace_member
    (method_declaration
      (type)
      (symbol (identifier))
      (block
        (expression_statement
          (arithmetic_expression
            (literal (integer))
            (member_access_expression (member_access_expression (identifier)) (identifier))))
        (expression_statement
          (in_expression 
            (member_access_expression (identifier))
            (method_call_expression (member_access_expression (identifier)))))
        (expression_statement
          (assignment_expression
            (literal (integer))
            (literal (integer))))
        (expression_statement
          (method_call_expression
            (member_access_expression
              (member_access_expression
                (member_access_expression (identifier))
                (identifier))
              (identifier))))
        (expression_statement
          (method_call_expression
            (member_access_expression
              (arithmetic_expression
                (literal (integer))
                (literal (integer)))
              (identifier))))
        (if_statement
          (logical_negation_expression
            (yield_expression
              (method_call_expression
                (member_access_expression
                  (identifier)))))
          (block))
            (expression_statement
              (arithmetic_expression
                (arithmetic_expression
                  (arithmetic_expression
                    (arithmetic_expression
                      (literal
                        (integer))
                      (literal
                        (real)))
                    (literal
                      (integer)))
                  (member_access_expression
                    (literal
                      (integer))
                    (identifier)))
                (literal
                  (real))))))))