{
  "name": "xfst",
  "rules": {
    "source_file": {
      "type": "REPEAT1",
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "semicolon"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        ]
      }
    },
    "semicolon": {
      "type": "STRING",
      "value": ";"
    },
    "expression": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "symbol"
        },
        {
          "type": "SYMBOL",
          "name": "string"
        },
        {
          "type": "SYMBOL",
          "name": "any"
        },
        {
          "type": "SYMBOL",
          "name": "zero"
        },
        {
          "type": "SYMBOL",
          "name": "boundary"
        },
        {
          "type": "SYMBOL",
          "name": "symbol_group"
        },
        {
          "type": "PREC",
          "value": 9,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "STRING",
                "value": "["
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "expression"
                  },
                  {
                    "type": "BLANK"
                  }
                ]
              },
              {
                "type": "STRING",
                "value": "]"
              }
            ]
          }
        },
        {
          "type": "SYMBOL",
          "name": "optional"
        },
        {
          "type": "SYMBOL",
          "name": "substitute"
        },
        {
          "type": "PREC_LEFT",
          "value": 8,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "SYMBOL",
                "name": "colon"
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        },
        {
          "type": "PREC",
          "value": 7,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "complement"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "term_complement"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "contains"
                  }
                ]
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        },
        {
          "type": "PREC",
          "value": 6,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "plus"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "star"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "repeat"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "upper"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "lower"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "reverse"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "inverse"
                  }
                ]
              }
            ]
          }
        },
        {
          "type": "PREC_LEFT",
          "value": 5,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "ignore"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "ignore_inside"
                  }
                ]
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        },
        {
          "type": "PREC_LEFT",
          "value": 4,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        },
        {
          "type": "PREC_LEFT",
          "value": 3,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "union"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "intersect"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "subtract"
                  }
                ]
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        },
        {
          "type": "SYMBOL",
          "name": "restrict"
        },
        {
          "type": "SYMBOL",
          "name": "simple_replace"
        },
        {
          "type": "SYMBOL",
          "name": "single_replace"
        },
        {
          "type": "SYMBOL",
          "name": "mark"
        },
        {
          "type": "SYMBOL",
          "name": "parallel_replace"
        },
        {
          "type": "SYMBOL",
          "name": "conditional_replace"
        },
        {
          "type": "SYMBOL",
          "name": "parallel_conditional_replace"
        },
        {
          "type": "PREC_LEFT",
          "value": 1,
          "content": {
            "type": "SEQ",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "crossproduct"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "compose"
                  }
                ]
              },
              {
                "type": "SYMBOL",
                "name": "expression"
              }
            ]
          }
        }
      ]
    },
    "symbol": {
      "type": "PATTERN",
      "value": "([^\\s%:~\\\\$+*^\\./|&\\-<>0?\\\"#\\[\\](){}\\x60,]|%.|=)+"
    },
    "string": {
      "type": "PATTERN",
      "value": "\"[^\\\"]+\""
    },
    "any": {
      "type": "STRING",
      "value": "?"
    },
    "zero": {
      "type": "STRING",
      "value": "0"
    },
    "boundary": {
      "type": "STRING",
      "value": ".#."
    },
    "symbol_group": {
      "type": "PATTERN",
      "value": "\\{[^\\}]+\\}"
    },
    "optional": {
      "type": "PREC",
      "value": 9,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "("
          },
          {
            "type": "REPEAT",
            "content": {
              "type": "SYMBOL",
              "name": "expression"
            }
          },
          {
            "type": "STRING",
            "value": ")"
          }
        ]
      }
    },
    "substitute": {
      "type": "PREC",
      "value": 9,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "`"
          },
          {
            "type": "STRING",
            "value": "["
          },
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "STRING",
            "value": ","
          },
          {
            "type": "SYMBOL",
            "name": "symbol"
          },
          {
            "type": "STRING",
            "value": ","
          },
          {
            "type": "REPEAT",
            "content": {
              "type": "SYMBOL",
              "name": "symbol"
            }
          },
          {
            "type": "STRING",
            "value": "]"
          }
        ]
      }
    },
    "colon": {
      "type": "STRING",
      "value": ":"
    },
    "complement": {
      "type": "STRING",
      "value": "~"
    },
    "term_complement": {
      "type": "STRING",
      "value": "\\"
    },
    "contains": {
      "type": "STRING",
      "value": "$"
    },
    "plus": {
      "type": "STRING",
      "value": "+"
    },
    "star": {
      "type": "STRING",
      "value": "*"
    },
    "repeat": {
      "type": "PATTERN",
      "value": "\\^([<>]?\\d+|\\{\\d+,\\d+\\}|\\d+,\\d+)"
    },
    "upper": {
      "type": "STRING",
      "value": ".u"
    },
    "lower": {
      "type": "STRING",
      "value": ".l"
    },
    "reverse": {
      "type": "STRING",
      "value": ".r"
    },
    "inverse": {
      "type": "STRING",
      "value": ".i"
    },
    "ignore": {
      "type": "STRING",
      "value": "/"
    },
    "ignore_inside": {
      "type": "STRING",
      "value": "./."
    },
    "union": {
      "type": "STRING",
      "value": "|"
    },
    "intersect": {
      "type": "STRING",
      "value": "&"
    },
    "subtract": {
      "type": "STRING",
      "value": "-"
    },
    "context": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "BLANK"
              }
            ]
          },
          {
            "type": "STRING",
            "value": "_"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        ]
      }
    },
    "context_list": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "context"
          },
          {
            "type": "REPEAT",
            "content": {
              "type": "SEQ",
              "members": [
                {
                  "type": "STRING",
                  "value": ","
                },
                {
                  "type": "SYMBOL",
                  "name": "context"
                }
              ]
            }
          }
        ]
      }
    },
    "restrict": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "STRING",
            "value": "=>"
          },
          {
            "type": "SYMBOL",
            "name": "context_list"
          }
        ]
      }
    },
    "arrow": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": "->"
        },
        {
          "type": "STRING",
          "value": "<-"
        },
        {
          "type": "STRING",
          "value": "(->)"
        },
        {
          "type": "STRING",
          "value": "(<-)"
        },
        {
          "type": "STRING",
          "value": "@->"
        },
        {
          "type": "STRING",
          "value": "->@"
        },
        {
          "type": "STRING",
          "value": "@>"
        },
        {
          "type": "STRING",
          "value": ">@"
        }
      ]
    },
    "simple_replace": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "SYMBOL",
            "name": "arrow"
          },
          {
            "type": "SYMBOL",
            "name": "expression"
          }
        ]
      }
    },
    "single_replace": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "[."
          },
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "STRING",
            "value": ".]"
          },
          {
            "type": "SYMBOL",
            "name": "arrow"
          },
          {
            "type": "SYMBOL",
            "name": "expression"
          }
        ]
      }
    },
    "mark": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "expression"
          },
          {
            "type": "SYMBOL",
            "name": "arrow"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "BLANK"
              }
            ]
          },
          {
            "type": "STRING",
            "value": "..."
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "expression"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        ]
      }
    },
    "parallel_replace": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "simple_replace"
              },
              {
                "type": "SYMBOL",
                "name": "single_replace"
              }
            ]
          },
          {
            "type": "REPEAT1",
            "content": {
              "type": "PREC",
              "value": 11,
              "content": {
                "type": "SEQ",
                "members": [
                  {
                    "type": "STRING",
                    "value": ","
                  },
                  {
                    "type": "CHOICE",
                    "members": [
                      {
                        "type": "SYMBOL",
                        "name": "simple_replace"
                      },
                      {
                        "type": "SYMBOL",
                        "name": "single_replace"
                      }
                    ]
                  }
                ]
              }
            }
          }
        ]
      }
    },
    "condition_operators": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": "||"
        },
        {
          "type": "STRING",
          "value": "//"
        },
        {
          "type": "STRING",
          "value": "\\\\"
        },
        {
          "type": "STRING",
          "value": "\\/"
        }
      ]
    },
    "conditional_replace": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "simple_replace"
              },
              {
                "type": "SYMBOL",
                "name": "single_replace"
              },
              {
                "type": "SYMBOL",
                "name": "parallel_replace"
              }
            ]
          },
          {
            "type": "SYMBOL",
            "name": "condition_operators"
          },
          {
            "type": "SYMBOL",
            "name": "context_list"
          }
        ]
      }
    },
    "parallel_conditional_replace": {
      "type": "PREC_LEFT",
      "value": 2,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "conditional_replace"
          },
          {
            "type": "REPEAT1",
            "content": {
              "type": "PREC",
              "value": 10,
              "content": {
                "type": "SEQ",
                "members": [
                  {
                    "type": "STRING",
                    "value": ",,"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "conditional_replace"
                  }
                ]
              }
            }
          }
        ]
      }
    },
    "crossproduct": {
      "type": "STRING",
      "value": ".x."
    },
    "compose": {
      "type": "STRING",
      "value": ".o."
    },
    "comment": {
      "type": "PATTERN",
      "value": "[!#][^\\n]*"
    }
  },
  "extras": [
    {
      "type": "SYMBOL",
      "name": "comment"
    },
    {
      "type": "PATTERN",
      "value": "[\\s\\n]"
    }
  ],
  "conflicts": [],
  "precedences": [],
  "externals": [],
  "inline": [],
  "supertypes": []
}