{
  "name": "d2",
  "rules": {
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      "type": "REPEAT",
      "content": {
        "type": "SYMBOL",
        "name": "_definition"
      }
    },
    "_definition": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "connection"
        },
        {
          "type": "SYMBOL",
          "name": "shape"
        }
      ]
    },
    "_end": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": ";"
        },
        {
          "type": "STRING",
          "value": "\n"
        }
      ]
    },
    "connection": {
      "type": "SEQ",
      "members": [
        {
          "type": "FIELD",
          "name": "left",
          "content": {
            "type": "SYMBOL",
            "name": "identifier"
          }
        },
        {
          "type": "SYMBOL",
          "name": "arrow"
        },
        {
          "type": "FIELD",
          "name": "right",
          "content": {
            "type": "SYMBOL",
            "name": "identifier"
          }
        },
        {
          "type": "SYMBOL",
          "name": "_end"
        }
      ]
    },
    "shape": {
      "type": "PREC_LEFT",
      "value": 0,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "FIELD",
            "name": "id",
            "content": {
              "type": "SYMBOL",
              "name": "identifier"
            }
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SEQ",
                "members": [
                  {
                    "type": "STRING",
                    "value": ":"
                  },
                  {
                    "type": "FIELD",
                    "name": "label",
                    "content": {
                      "type": "SYMBOL",
                      "name": "label"
                    }
                  }
                ]
              },
              {
                "type": "BLANK"
              }
            ]
          },
          {
            "type": "SYMBOL",
            "name": "_end"
          }
        ]
      }
    },
    "label": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "string"
        },
        {
          "type": "PATTERN",
          "value": "[^\\n{]+"
        }
      ]
    },
    "identifier": {
      "type": "SYMBOL",
      "name": "_identifier"
    },
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      "type": "CHOICE",
      "members": [
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "--"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "STRING",
                "value": "-"
              }
            }
          ]
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "<-"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "STRING",
                "value": "-"
              }
            }
          ]
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "<-"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "STRING",
                "value": "-"
              }
            },
            {
              "type": "STRING",
              "value": ">"
            }
          ]
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "REPEAT",
              "content": {
                "type": "STRING",
                "value": "-"
              }
            },
            {
              "type": "STRING",
              "value": "->"
            }
          ]
        }
      ]
    },
    "string": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "'"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "TOKEN",
                "content": {
                  "type": "PATTERN",
                  "value": "[^'\\n]+"
                }
              }
            },
            {
              "type": "STRING",
              "value": "'"
            }
          ]
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "\""
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "TOKEN",
                "content": {
                  "type": "PATTERN",
                  "value": "[^'\\n]+"
                }
              }
            },
            {
              "type": "STRING",
              "value": "\""
            }
          ]
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "`"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "TOKEN",
                "content": {
                  "type": "PATTERN",
                  "value": "[^'\\n]+"
                }
              }
            },
            {
              "type": "STRING",
              "value": "`"
            }
          ]
        }
      ]
    }
  },
  "extras": [
    {
      "type": "PATTERN",
      "value": "\\s"
    }
  ],
  "conflicts": [],
  "precedences": [],
  "externals": [
    {
      "type": "SYMBOL",
      "name": "_identifier"
    }
  ],
  "inline": [],
  "supertypes": []
}