{
  "name": "tiger",
  "rules": {
    "source_file": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_expr"
        }
      ]
    },
    "_expr": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": "nil"
        },
        {
          "type": "SYMBOL",
          "name": "integer_literal"
        },
        {
          "type": "SYMBOL",
          "name": "string_literal"
        }
      ]
    },
    "integer_literal": {
      "type": "PATTERN",
      "value": "[0-9]+"
    },
    "string_literal": {
      "type": "SEQ",
      "members": [
        {
          "type": "STRING",
          "value": "\""
        },
        {
          "type": "REPEAT",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "escape_sequence"
              },
              {
                "type": "PATTERN",
                "value": "[^\"\\\\]+"
              }
            ]
          }
        },
        {
          "type": "STRING",
          "value": "\""
        }
      ]
    },
    "escape_sequence": {
      "type": "IMMEDIATE_TOKEN",
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "\\"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "STRING",
                    "value": "a"
                  },
                  {
                    "type": "STRING",
                    "value": "b"
                  },
                  {
                    "type": "STRING",
                    "value": "f"
                  },
                  {
                    "type": "STRING",
                    "value": "n"
                  },
                  {
                    "type": "STRING",
                    "value": "r"
                  },
                  {
                    "type": "STRING",
                    "value": "t"
                  },
                  {
                    "type": "STRING",
                    "value": "v"
                  }
                ]
              },
              {
                "type": "PATTERN",
                "value": "[0-3][0-7]{2}"
              },
              {
                "type": "SEQ",
                "members": [
                  {
                    "type": "STRING",
                    "value": "x"
                  },
                  {
                    "type": "PATTERN",
                    "value": "[0-9a-fA-F]{2}"
                  }
                ]
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "STRING",
                    "value": "\\"
                  },
                  {
                    "type": "STRING",
                    "value": "\""
                  }
                ]
              }
            ]
          }
        ]
      }
    }
  },
  "extras": [
    {
      "type": "PATTERN",
      "value": "\\s"
    }
  ],
  "conflicts": [],
  "precedences": [],
  "externals": [],
  "inline": [],
  "supertypes": []
}