grammar.json

{
  "name": "nu",
  "word": "identifier",
  "rules": {
    "nu_script": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "shebang"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "_block_body"
            },
            {
              "type": "BLANK"
            }
          ]
        }
      ]
    },
    "shebang": {
      "type": "SEQ",
      "members": [
        {
          "type": "STRING",
          "value": "#!"
        },
        {
          "type": "PATTERN",
          "value": ".*\\n"
        }
      ]
    },
    "_block_body_statement": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_declaration"
        },
        {
          "type": "SYMBOL",
          "name": "_statement"
        }
      ]
    },
    "_declaration": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "decl_alias"
        },
        {
          "type": "SYMBOL",
          "name": "decl_def"
        },
        {
          "type": "SYMBOL",
          "name": "decl_export"
        },
        {
          "type": "SYMBOL",
          "name": "decl_extern"
        },
        {
          "type": "SYMBOL",
          "name": "decl_module"
        },
        {
          "type": "SYMBOL",
          "name": "decl_use"
        }
      ]
    },
    "decl_alias": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "export"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "STRING",
          "value": "alias"
        },
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_command_name"
          }
        },
        {
          "type": "STRING",
          "value": "="
        },
        {
          "type": "FIELD",
          "name": "value",
          "content": {
            "type": "SYMBOL",
            "name": "pipeline"
          }
        }
      ]
    },
    "stmt_let": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "STRING",
                "value": "let"
              },
              {
                "type": "STRING",
                "value": "let-env"
              }
            ]
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern"
          }
        ]
      }
    },
    "stmt_mut": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "mut"
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern"
          }
        ]
      }
    },
    "stmt_const": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "const"
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern"
          }
        ]
      }
    },
    "_assignment_pattern": {
      "type": "SEQ",
      "members": [
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_variable_name"
          }
        },
        {
          "type": "FIELD",
          "name": "type",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "param_type"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        },
        {
          "type": "STRING",
          "value": "="
        },
        {
          "type": "FIELD",
          "name": "value",
          "content": {
            "type": "SYMBOL",
            "name": "pipeline"
          }
        }
      ]
    },
    "_statement": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_control"
        },
        {
          "type": "SYMBOL",
          "name": "_stmt_hide"
        },
        {
          "type": "SYMBOL",
          "name": "_stmt_overlay"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_register"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_source"
        },
        {
          "type": "SYMBOL",
          "name": "assignment"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_let"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_mut"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_const"
        },
        {
          "type": "SYMBOL",
          "name": "pipeline"
        }
      ]
    },
    "pipeline": {
      "type": "PREC_RIGHT",
      "value": 0,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "REPEAT",
            "content": {
              "type": "SYMBOL",
              "name": "pipe_element"
            }
          },
          {
            "type": "ALIAS",
            "content": {
              "type": "SYMBOL",
              "name": "pipe_element_last"
            },
            "named": true,
            "value": "pipe_element"
          },
          {
            "type": "SYMBOL",
            "name": "_terminator"
          }
        ]
      }
    },
    "_block_body_statement_last": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_declaration_last"
        },
        {
          "type": "SYMBOL",
          "name": "_statement_last"
        }
      ]
    },
    "_declaration_last": {
      "type": "CHOICE",
      "members": [
        {
          "type": "ALIAS",
          "content": {
            "type": "SYMBOL",
            "name": "decl_alias_last"
          },
          "named": true,
          "value": "decl_alias"
        },
        {
          "type": "SYMBOL",
          "name": "decl_def"
        },
        {
          "type": "SYMBOL",
          "name": "decl_export"
        },
        {
          "type": "SYMBOL",
          "name": "decl_extern"
        },
        {
          "type": "SYMBOL",
          "name": "decl_module"
        },
        {
          "type": "SYMBOL",
          "name": "decl_use"
        }
      ]
    },
    "decl_alias_last": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "export"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "STRING",
          "value": "alias"
        },
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_command_name"
          }
        },
        {
          "type": "STRING",
          "value": "="
        },
        {
          "type": "FIELD",
          "name": "value",
          "content": {
            "type": "ALIAS",
            "content": {
              "type": "SYMBOL",
              "name": "pipeline_last"
            },
            "named": true,
            "value": "pipeline"
          }
        }
      ]
    },
    "stmt_let_last": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "STRING",
                "value": "let"
              },
              {
                "type": "STRING",
                "value": "let-env"
              }
            ]
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern_last"
          }
        ]
      }
    },
    "stmt_mut_last": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "mut"
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern_last"
          }
        ]
      }
    },
    "stmt_const_last": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "STRING",
            "value": "const"
          },
          {
            "type": "SYMBOL",
            "name": "_assignment_pattern_last"
          }
        ]
      }
    },
    "_assignment_pattern_last": {
      "type": "SEQ",
      "members": [
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_variable_name"
          }
        },
        {
          "type": "FIELD",
          "name": "type",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "param_type"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        },
        {
          "type": "STRING",
          "value": "="
        },
        {
          "type": "FIELD",
          "name": "value",
          "content": {
            "type": "ALIAS",
            "content": {
              "type": "SYMBOL",
              "name": "pipeline_last"
            },
            "named": true,
            "value": "pipeline"
          }
        }
      ]
    },
    "_statement_last": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_control"
        },
        {
          "type": "SYMBOL",
          "name": "_stmt_hide"
        },
        {
          "type": "SYMBOL",
          "name": "_stmt_overlay"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_register"
        },
        {
          "type": "SYMBOL",
          "name": "stmt_source"
        },
        {
          "type": "SYMBOL",
          "name": "assignment"
        },
        {
          "type": "ALIAS",
          "content": {
            "type": "SYMBOL",
            "name": "stmt_let_last"
          },
          "named": true,
          "value": "stmt_let"
        },
        {
          "type": "ALIAS",
          "content": {
            "type": "SYMBOL",
            "name": "stmt_mut_last"
          },
          "named": true,
          "value": "stmt_mut"
        },
        {
          "type": "ALIAS",
          "content": {
            "type": "SYMBOL",
            "name": "stmt_const_last"
          },
          "named": true,
          "value": "stmt_const"
        },
        {
          "type": "ALIAS",
          "content": {
            "type": "SYMBOL",
            "name": "pipeline_last"
          },
          "named": true,
          "value": "pipeline"
        }
      ]
    },
    "pipeline_last": {
      "type": "PREC_RIGHT",
      "value": 0,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "REPEAT",
            "content": {
              "type": "SYMBOL",
              "name": "pipe_element"
            }
          },
          {
            "type": "ALIAS",
            "content": {
              "type": "SYMBOL",
              "name": "pipe_element_last"
            },
            "named": true,
            "value": "pipe_element"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "_terminator"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        ]
      }
    },
    "_block_body": {
      "type": "SEQ",
      "members": [
        {
          "type": "PREC_RIGHT",
          "value": 0,
          "content": {
            "type": "REPEAT",
            "content": {
              "type": "SEQ",
              "members": [
                {
                  "type": "SYMBOL",
                  "name": "_block_body_statement"
                },
                {
                  "type": "REPEAT",
                  "content": {
                    "type": "SYMBOL",
                    "name": "_terminator"
                  }
                }
              ]
            }
          }
        },
        {
          "type": "SYMBOL",
          "name": "_block_body_statement_last"
        },
        {
          "type": "REPEAT",
          "content": {
            "type": "SYMBOL",
            "name": "_terminator"
          }
        }
      ]
    },
    "cmd_identifier": {
      "type": "TOKEN",
      "content": {
        "type": "PATTERN",
        "value": "[_\\p{XID_Start}][_\\-\\p{XID_Continue}]*"
      }
    },
    "identifier": {
      "type": "TOKEN",
      "content": {
        "type": "PATTERN",
        "value": "[_\\p{XID_Start}][_\\p{XID_Continue}]*"
      }
    },
    "_command_name": {
      "type": "CHOICE",
      "members": [
        {
          "type": "FIELD",
          "name": "unquoted_name",
          "content": {
            "type": "SYMBOL",
            "name": "cmd_identifier"
          }
        },
        {
          "type": "FIELD",
          "name": "quoted_name",
          "content": {
            "type": "SYMBOL",
            "name": "val_string"
          }
        }
      ]
    },
    "_variable_name": {
      "type": "CHOICE",
      "members": [
        {
          "type": "FIELD",
          "name": "var_name",
          "content": {
            "type": "SYMBOL",
            "name": "identifier"
          }
        },
        {
          "type": "FIELD",
          "name": "dollar_name",
          "content": {
            "type": "SYMBOL",
            "name": "val_variable"
          }
        }
      ]
    },
    "_terminator": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": ";"
        },
        {
          "type": "STRING",
          "value": "\n"
        }
      ]
    },
    "decl_def": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "export"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "def"
            },
            {
              "type": "STRING",
              "value": "def-env"
            }
          ]
        },
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_command_name"
          }
        },
        {
          "type": "FIELD",
          "name": "parameters",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "parameter_parens"
              },
              {
                "type": "SYMBOL",
                "name": "parameter_bracks"
              }
            ]
          }
        },
        {
          "type": "FIELD",
          "name": "return_type",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "returns"
              },
              {
                "type": "BLANK"
              }
            ]
          }
        },
        {
          "type": "FIELD",
          "name": "body",
          "content": {
            "type": "SYMBOL",
            "name": "block"
          }
        }
      ]
    },
    "decl_export": {
      "type": "SEQ",
      "members": [
        {
          "type": "STRING",
          "value": "export-env"
        },
        {
          "type": "FIELD",
          "name": "body",
          "content": {
            "type": "SYMBOL",
            "name": "block"
          }
        }
      ]
    },
    "decl_extern": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "STRING",
                "value": "export"
              },
              {
                "type": "BLANK"
              }
            ]
          },
          {
            "type": "STRING",
            "value": "extern"
          },
          {
            "type": "FIELD",
            "name": "name",
            "content": {
              "type": "SYMBOL",
              "name": "_command_name"
            }
          },
          {
            "type": "FIELD",
            "name": "signature",
            "content": {
              "type": "CHOICE",
              "members": [
                {
                  "type": "SYMBOL",
                  "name": "parameter_parens"
                },
                {
                  "type": "SYMBOL",
                  "name": "parameter_bracks"
                }
              ]
            }
          },
          {
            "type": "FIELD",
            "name": "body",
            "content": {
              "type": "CHOICE",
              "members": [
                {
                  "type": "SYMBOL",
                  "name": "block"
                },
                {
                  "type": "BLANK"
                }
              ]
            }
          }
        ]
      }
    },
    "decl_module": {
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        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "export"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "STRING",
          "value": "module"
        },
        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "_command_name"
          }
        },
        {
          "type": "FIELD",
          "name": "body",
          "content": {
            "type": "SYMBOL",
            "name": "block"
          }
        }
      ]
    },
    "decl_use": {
      "type": "PREC_RIGHT",
      "value": 1,
      "content": {
        "type": "SEQ",
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          {
            "type": "CHOICE",
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              {
                "type": "STRING",
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              },
              {
                "type": "BLANK"
              }
            ]
          },
          {
            "type": "STRING",
            "value": "use"
          },
          {
            "type": "FIELD",
            "name": "module",
            "content": {
              "type": "CHOICE",
              "members": [
                {
                  "type": "SYMBOL",
                  "name": "val_string"
                },
                {
                  "type": "SYMBOL",
                  "name": "unquoted"
                }
              ]
            }
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "FIELD",
                "name": "import_pattern",
                "content": {
                  "type": "SYMBOL",
                  "name": "scope_pattern"
                }
              },
              {
                "type": "BLANK"
              }
            ]
          }
        ]
      }
    },
    "returns": {
      "type": "SEQ",
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        {
          "type": "STRING",
          "value": ":"
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "_multiple_types"
            },
            {
              "type": "SYMBOL",
              "name": "_one_type"
            }
          ]
        }
      ]
    },
    "_one_type": {
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        {
          "type": "SYMBOL",
          "name": "_type_annotation"
        },
        {
          "type": "STRING",
          "value": "->"
        },
        {
          "type": "SYMBOL",
          "name": "_type_annotation"
        }
      ]
    },
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                "type": "SYMBOL",
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                  {
                    "type": "STRING",
                    "value": ","
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                  {
                    "type": "BLANK"
                  }
                ]
              }
            ]
          }
        },
        {
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          "type": "REPEAT",
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            "type": "SYMBOL",
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          }
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        {
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          "type": "STRING",
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        {
          "type": "REPEAT",
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            "type": "SYMBOL",
            "name": "parameter"
          }
        },
        {
          "type": "STRING",
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        }
      ]
    },
    "parameter_pipes": {
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          "type": "STRING",
          "value": "|"
        },
        {
          "type": "REPEAT",
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            "type": "SYMBOL",
            "name": "parameter"
          }
        },
        {
          "type": "STRING",
          "value": "|"
        }
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    },
    "parameter": {
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        {
          "type": "CHOICE",
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            {
              "type": "SYMBOL",
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            {
              "type": "FIELD",
              "name": "param_long_flag",
              "content": {
                "type": "SYMBOL",
                "name": "param_long_flag"
              }
            },
            {
              "type": "FIELD",
              "name": "param_long_flag",
              "content": {
                "type": "SEQ",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "param_long_flag"
                  },
                  {
                    "type": "FIELD",
                    "name": "flag_capsule",
                    "content": {
                      "type": "SYMBOL",
                      "name": "flag_capsule"
                    }
                  }
                ]
              }
            }
          ]
        },
        {
          "type": "CHOICE",
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            {
              "type": "CHOICE",
              "members": [
                {
                  "type": "SYMBOL",
                  "name": "param_type"
                },
                {
                  "type": "SYMBOL",
                  "name": "param_value"
                },
                {
                  "type": "SEQ",
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                    {
                      "type": "SYMBOL",
                      "name": "param_value"
                    },
                    {
                      "type": "SYMBOL",
                      "name": "param_type"
                    }
                  ]
                },
                {
                  "type": "SEQ",
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                    {
                      "type": "SYMBOL",
                      "name": "param_type"
                    },
                    {
                      "type": "SYMBOL",
                      "name": "param_value"
                    }
                  ]
                }
              ]
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