SOURCE_FILE
  MACRO_DEF
    MACRO_KW "macro"
    WHITESPACE " "
    NAME
      IDENT "parse_use_trees"
    TOKEN_TREE
      L_PAREN "("
      DOLLAR "$"
      TOKEN_TREE
        L_PAREN "("
        DOLLAR "$"
        IDENT "s"
        COLON ":"
        IDENT "expr"
        R_PAREN ")"
      COMMA ","
      STAR "*"
      WHITESPACE " "
      DOLLAR "$"
      TOKEN_TREE
        L_PAREN "("
        COMMA ","
        R_PAREN ")"
      STAR "*"
      R_PAREN ")"
    WHITESPACE " "
    TOKEN_TREE
      L_CURLY "{"
      WHITESPACE "\n    "
      IDENT "vec"
      BANG "!"
      TOKEN_TREE
        L_BRACK "["
        WHITESPACE "\n        "
        DOLLAR "$"
        TOKEN_TREE
          L_PAREN "("
          IDENT "parse_use_tree"
          TOKEN_TREE
            L_PAREN "("
            DOLLAR "$"
            IDENT "s"
            R_PAREN ")"
          COMMA ","
          R_PAREN ")"
        STAR "*"
        WHITESPACE "\n    "
        R_BRACK "]"
      WHITESPACE "\n"
      R_CURLY "}"
  WHITESPACE "\n\n"
  FN
    ATTR
      POUND "#"
      L_BRACK "["
      PATH_META
        PATH
          PATH_SEGMENT
            NAME_REF
              IDENT "test"
      R_BRACK "]"
    WHITESPACE "\n"
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "test_use_tree_merge"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n    "
        MACRO_DEF
          MACRO_KW "macro"
          WHITESPACE " "
          NAME
            IDENT "test_merge"
          TOKEN_TREE
            L_PAREN "("
            TOKEN_TREE
              L_BRACK "["
              DOLLAR "$"
              TOKEN_TREE
                L_PAREN "("
                DOLLAR "$"
                IDENT "input"
                COLON ":"
                IDENT "expr"
                R_PAREN ")"
              COMMA ","
              STAR "*"
              WHITESPACE " "
              DOLLAR "$"
              TOKEN_TREE
                L_PAREN "("
                COMMA ","
                R_PAREN ")"
              STAR "*"
              R_BRACK "]"
            COMMA ","
            WHITESPACE " "
            TOKEN_TREE
              L_BRACK "["
              DOLLAR "$"
              TOKEN_TREE
                L_PAREN "("
                DOLLAR "$"
                IDENT "output"
                COLON ":"
                IDENT "expr"
                R_PAREN ")"
              COMMA ","
              STAR "*"
              WHITESPACE " "
              DOLLAR "$"
              TOKEN_TREE
                L_PAREN "("
                COMMA ","
                R_PAREN ")"
              STAR "*"
              R_BRACK "]"
            R_PAREN ")"
          WHITESPACE " "
          TOKEN_TREE
            L_CURLY "{"
            WHITESPACE "\n        "
            IDENT "assert_eq"
            BANG "!"
            TOKEN_TREE
              L_PAREN "("
              WHITESPACE "\n            "
              IDENT "merge_use_trees"
              TOKEN_TREE
                L_PAREN "("
                IDENT "parse_use_trees"
                BANG "!"
                TOKEN_TREE
                  L_PAREN "("
                  DOLLAR "$"
                  TOKEN_TREE
                    L_PAREN "("
                    DOLLAR "$"
                    IDENT "input"
                    COMMA ","
                    R_PAREN ")"
                  STAR "*"
                  R_PAREN ")"
                R_PAREN ")"
              COMMA ","
              WHITESPACE "\n            "
              IDENT "parse_use_trees"
              BANG "!"
              TOKEN_TREE
                L_PAREN "("
                DOLLAR "$"
                TOKEN_TREE
                  L_PAREN "("
                  DOLLAR "$"
                  IDENT "output"
                  COMMA ","
                  R_PAREN ")"
                STAR "*"
                R_PAREN ")"
              COMMA ","
              WHITESPACE "\n        "
              R_PAREN ")"
            SEMICOLON ";"
            WHITESPACE "\n    "
            R_CURLY "}"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"
