{
  "name": "bash",
  "rules": {
    "program": {
      "type": "REPEAT",
      "content": {
        "type": "SYMBOL",
        "name": "command"
      }
    },
    "command": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "simple_command"
            },
            {
              "type": "SYMBOL",
              "name": "pipeline"
            },
            {
              "type": "SYMBOL",
              "name": "list"
            }
          ]
        },
        {
          "type": "SYMBOL",
          "name": "control_operator"
        }
      ]
    },
    "simple_command": {
      "type": "SEQ",
      "members": [
        {
          "type": "REPEAT",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "environment_variable_assignment"
              },
              {
                "type": "SYMBOL",
                "name": "file_redirect"
              }
            ]
          }
        },
        {
          "type": "RENAME",
          "content": {
            "type": "SYMBOL",
            "name": "leading_word"
          },
          "value": "command_name"
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SEQ",
              "members": [
                {
                  "type": "PATTERN",
                  "value": "\\s+"
                },
                {
                  "type": "REPEAT",
                  "content": {
                    "type": "CHOICE",
                    "members": [
                      {
                        "type": "RENAME",
                        "content": {
                          "type": "SYMBOL",
                          "name": "word"
                        },
                        "value": "argument"
                      },
                      {
                        "type": "SYMBOL",
                        "name": "expansion"
                      },
                      {
                        "type": "SYMBOL",
                        "name": "operator_expansion"
                      }
                    ]
                  }
                }
              ]
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "REPEAT",
          "content": {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "file_redirect"
              },
              {
                "type": "SYMBOL",
                "name": "heredoc_redirect"
              }
            ]
          }
        }
      ]
    },
    "pipeline": {
      "type": "PREC_LEFT",
      "value": 0,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "SYMBOL",
            "name": "simple_command"
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "STRING",
                "value": "|"
              },
              {
                "type": "STRING",
                "value": "|&"
              }
            ]
          },
          {
            "type": "SYMBOL",
            "name": "simple_command"
          }
        ]
      }
    },
    "list": {
      "type": "PREC_LEFT",
      "value": 0,
      "content": {
        "type": "SEQ",
        "members": [
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "simple_command"
              },
              {
                "type": "SYMBOL",
                "name": "list"
              },
              {
                "type": "SYMBOL",
                "name": "pipeline"
              }
            ]
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "STRING",
                "value": "&&"
              },
              {
                "type": "STRING",
                "value": ";"
              }
            ]
          },
          {
            "type": "CHOICE",
            "members": [
              {
                "type": "SYMBOL",
                "name": "simple_command"
              },
              {
                "type": "SYMBOL",
                "name": "pipeline"
              }
            ]
          }
        ]
      }
    },
    "environment_variable_assignment": {
      "type": "SEQ",
      "members": [
        {
          "type": "RENAME",
          "content": {
            "type": "SYMBOL",
            "name": "leading_word"
          },
          "value": "variable_name"
        },
        {
          "type": "STRING",
          "value": "="
        },
        {
          "type": "RENAME",
          "content": {
            "type": "SYMBOL",
            "name": "word"
          },
          "value": "argument"
        }
      ]
    },
    "expansion": {
      "type": "SEQ",
      "members": [
        {
          "type": "STRING",
          "value": "$"
        },
        {
          "type": "RENAME",
          "content": {
            "type": "SYMBOL",
            "name": "word"
          },
          "value": "variable_name"
        }
      ]
    },
    "operator_expansion": {
      "type": "SEQ",
      "members": [
        {
          "type": "STRING",
          "value": "${"
        },
        {
          "type": "RENAME",
          "content": {
            "type": "SYMBOL",
            "name": "leading_word"
          },
          "value": "variable_name"
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SEQ",
              "members": [
                {
                  "type": "CHOICE",
                  "members": [
                    {
                      "type": "STRING",
                      "value": ":"
                    },
                    {
                      "type": "STRING",
                      "value": ":?"
                    },
                    {
                      "type": "STRING",
                      "value": "="
                    }
                  ]
                },
                {
                  "type": "RENAME",
                  "content": {
                    "type": "SYMBOL",
                    "name": "word"
                  },
                  "value": "argument"
                }
              ]
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "STRING",
          "value": "}"
        }
      ]
    },
    "file_redirect": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "file_descriptor"
            },
            {
              "type": "BLANK"
            }
          ]
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "<"
            },
            {
              "type": "STRING",
              "value": ">"
            },
            {
              "type": "STRING",
              "value": "<&"
            },
            {
              "type": "STRING",
              "value": ">&"
            }
          ]
        },
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "SYMBOL",
              "name": "file_descriptor"
            },
            {
              "type": "RENAME",
              "content": {
                "type": "SYMBOL",
                "name": "word"
              },
              "value": "file_name"
            }
          ]
        }
      ]
    },
    "heredoc_redirect": {
      "type": "SEQ",
      "members": [
        {
          "type": "CHOICE",
          "members": [
            {
              "type": "STRING",
              "value": "<<"
            },
            {
              "type": "STRING",
              "value": "<<-"
            }
          ]
        },
        {
          "type": "SYMBOL",
          "name": "heredoc"
        }
      ]
    },
    "heredoc": {
      "type": "CHOICE",
      "members": [
        {
          "type": "SYMBOL",
          "name": "_simple_heredoc"
        },
        {
          "type": "SEQ",
          "members": [
            {
              "type": "SYMBOL",
              "name": "_heredoc_beginning"
            },
            {
              "type": "REPEAT",
              "content": {
                "type": "CHOICE",
                "members": [
                  {
                    "type": "SYMBOL",
                    "name": "expansion"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "operator_expansion"
                  },
                  {
                    "type": "SYMBOL",
                    "name": "_heredoc_middle"
                  }
                ]
              }
            },
            {
              "type": "SYMBOL",
              "name": "_heredoc_end"
            }
          ]
        }
      ]
    },
    "file_descriptor": {
      "type": "TOKEN",
      "content": {
        "type": "PREC",
        "value": 1,
        "content": {
          "type": "PATTERN",
          "value": "\\d+"
        }
      }
    },
    "leading_word": {
      "type": "PATTERN",
      "value": "[^\\s#=|;:{}]+"
    },
    "word": {
      "type": "PATTERN",
      "value": "[^# \\s$<>{}&]+"
    },
    "control_operator": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": "\n"
        },
        {
          "type": "STRING",
          "value": ";;"
        }
      ]
    },
    "comment": {
      "type": "PATTERN",
      "value": "#.*"
    }
  },
  "extras": [
    {
      "type": "SYMBOL",
      "name": "comment"
    },
    {
      "type": "PATTERN",
      "value": "\\s"
    }
  ],
  "conflicts": [],
  "externals": [
    {
      "type": "SYMBOL",
      "name": "_simple_heredoc"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_beginning"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_middle"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_end"
    }
  ],
  "inline": [
    "control_operator"
  ]
}