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                  "value": "\\"
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                {
                  "type": "PATTERN",
                  "value": "[^abfnrtvxu'\\\"\\\\\\?]"
                }
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            }
          }
        },
        {
          "type": "PREC",
          "value": 1,
          "content": {
            "type": "SYMBOL",
            "name": "escape_sequence"
          }
        }
      ]
    },
    "escape_sequence": {
      "type": "IMMEDIATE_TOKEN",
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        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "\\"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "PATTERN",
                "value": "[^xu0-7]"
              },
              {
                "type": "PATTERN",
                "value": "[0-7]{1,3}"
              },
              {
                "type": "PATTERN",
                "value": "x[0-9a-fA-F]{2}"
              },
              {
                "type": "PATTERN",
                "value": "u[0-9a-fA-F]{4}"
              },
              {
                "type": "PATTERN",
                "value": "u\\{[0-9a-fA-F]+\\}"
              },
              {
                "type": "PATTERN",
                "value": "U[0-9a-fA-F]{8}"
              }
            ]
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        ]
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        {
          "type": "STRING",
          "value": "true"
        },
        {
          "type": "STRING",
          "value": "false"
        }
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      "type": "STRING",
      "value": "nil"
    },
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      "type": "STRING",
      "value": "---"
    },
    "tag": {
      "type": "TOKEN",
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "PATTERN",
            "value": "#[a-zA-Z_][a-zA-Z0-9_]*"
          },
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                "members": [
                  {
                    "type": "STRING",
                    "value": "("
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                  {
                    "type": "PATTERN",
                    "value": "\\w*"
                  },
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                    "type": "STRING",
                    "value": ")"
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                ]
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                "type": "BLANK"
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            ]
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    },
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      "type": "PATTERN",
      "value": "[_\\p{XID_Start}][_\\p{XID_Continue}]*",
      "flags": "u"
    },
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      "value": -1,
      "content": {
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            "name": "identifier"
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            "type": "REPEAT1",
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                  "value": "."
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                {
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                  "name": "identifier"
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    "keyword_identifier": {
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      "content": {
        "type": "CHOICE",
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            "type": "STRING",
            "value": "nil"
          },
          {
            "type": "STRING",
            "value": "false"
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            "value": "true"
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    },
    "_separator": {
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          "type": "SYMBOL",
          "name": "_newline"
        },
        {
          "type": "STRING",
          "value": ";"
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      ]
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        "type": "SEQ",
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          {
            "type": "STRING",
            "value": "//"
          },
          {
            "type": "PATTERN",
            "value": "[^\\r\\n]*"
          }
        ]
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      "type": "SYMBOL",
      "name": "comment"
    },
    {
      "type": "SYMBOL",
      "name": "block_comment"
    },
    {
      "type": "PATTERN",
      "value": "\\s"
    },
    {
      "type": "SYMBOL",
      "name": "_backslash"
    }
  ],
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      "array_type"
    ],
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      "_expression_no_tag",
      "struct"
    ]
  ],
  "precedences": [],
  "externals": [
    {
      "type": "SYMBOL",
      "name": "_newline"
    },
    {
      "type": "SYMBOL",
      "name": "_backslash"
    },
    {
      "type": "SYMBOL",
      "name": "_nl_comma"
    },
    {
      "type": "SYMBOL",
      "name": "float"
    },
    {
      "type": "SYMBOL",
      "name": "block_comment"
    },
    {
      "type": "STRING",
      "value": "{"
    },
    {
      "type": "STRING",
      "value": "\""
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  ],
  "inline": [],
  "supertypes": [
    "declaration",
    "expression",
    "literal",
    "statement"
  ]
}