text: "use babel";
  export default class RIndent {
      properlyIndent() {
          this.editor = atom.workspace.getActiveTextEditor();
          if (!atom.workspace.isTextEditor(this.editor)) {
              return;
          }
          const language = this.editor.getGrammar().scopeName.substring(0, 13);
  
          // Make sure this is a Python file
          if (language !== "source.r" && language !== "text.md" && language !== "source.python") {
              return;
          }
  
          // Get base variables
          const row = this.editor.getCursorBufferPosition().row;
          const col = this.editor.getCursorBufferPosition().column;
  
          // Parse the entire file up to the current point, keeping track of brackets
          let lines = this.editor.getTextInBufferRange([[0, 0], [row, col]]).split("\n");
  
  
          // At this point, the newline character has just been added,
          // so remove the last element of lines, which will be the empty line
          lines = lines.splice(0, lines.length - 1);
          const parseOutput = this.parseLines(lines);
  
          // openBracketStack: A stack of [row, col] pairs describing where open brackets are
          // lastClosedRow: Either empty, or an array [rowOpen, rowClose] describing the rows
          //  here the last bracket to be closed was opened and closed.
          // shouldHang: A stack containing the row number where each bracket was closed.
          // lastColonRow: The last row a def/for/if/elif/else/try/except etc. block started
          const { openBracketStack, lastClosedRow, shouldHang, lastColonRow } = parseOutput;
  
          // always indent if line ends with assignment
          const indentforassignment = this.endsWithAssignment(lines[row - 1]);
  
          if (indentforassignment) {
              const indentLevel = this.editor.indentationForBufferRow(row - 1) + 1;
              this.editor.setIndentationForBufferRow(row, indentLevel);
              return;
          }
  
          if (shouldHang || indentforassignment) {
              this.indentHanging(row, this.editor.buffer.lineForRow(row - 1));
              return;
          }
          // if we haven't started any parenthesis yet
          if (!(openBracketStack.length || (lastClosedRow.length && openBracketStack))) {
              let previousline = "";
              let indentLevel = 0;
              const previouslinenumber = row - 1;
              if (previouslinenumber > 0) {
                  previousline = lines[previouslinenumber];
                  const previousindent = this.editor.indentationForBufferRow(row - 1);
                  const indentLevel = this.indentBinary(lines[row - 1], previousline, previousindent);
  
              }  else {
                  const previousindent = false;
                  let indentLevel = 0;
              }
  
              //
              //
              // }
  
  
              this.editor.setIndentationForBufferRow(row, indentLevel);
              this.editor.setIndentationForBufferRow(row, indentLevel);
  
              return;
          }
          // we've had parenthesis, but they're all closed
          if (!openBracketStack.length) {
              // Can assume lastClosedRow is not empty
              if (lastClosedRow[1] === row - 1) {
                  // We just closed a bracket on the row, get indentation from the
                  // row where it was opened
                  let indentLevel = this.editor.indentationForBufferRow(lastClosedRow[0]);
                  const currentline = lines[lastClosedRow[1]];
                  let previousclosedline = "";
                  const previousclosedlinenumber = lastClosedRow[0] - 1;
                  if (previousclosedlinenumber > -1) {
                      previousclosedline = lines[lastClosedRow[0] - 1];
                  }
                  indentLevel = this.indentBinary(currentline, previousclosedline, indentLevel);
  
                  if (lastColonRow === row - 1) {
                      // We just finished def/for/if/elif/else/try/except etc. block,
                      // need to increase indent level by 1.
                      indentLevel += 1;
                  }
                  this.editor.setIndentationForBufferRow(row, indentLevel);
                  if (indentLevel >= 2 && lastColonRow === row - 1) {
                      const nextrow = row + 1;
                      this.editor.setIndentationForBufferRow(nextrow, indentLevel - 1);
                  }
              } else {
                  let previousline = "";
                  const previouslinenumber = row - 1;
                  if (previouslinenumber > 0) {
                      previousline = lines[previouslinenumber];
                      const previousindent = this.editor.indentationForBufferRow(row - 1);
                      const indentLevel = this.indentBinary(lines[row - 1], previousline, previousindent);
                      this.editor.setIndentationForBufferRow(row, indentLevel);
                  } else {
                      previousline = "";
                      const previousindent = false;
                      const indentLevel = 0;
                      this.editor.setIndentationForBufferRow(row, indentLevel);
                  }
  
              }
              return;
          }
          // Get tab length for context
          const tabLength = this.editor.getTabLength();
  
          const lastOpenBracketLocations = openBracketStack.pop();
  
          // Get some booleans to help work through the cases
  
          // haveClosedBracket is true if we have ever closed a bracket
          const haveClosedBracket = lastClosedRow.length;
          // justOpenedBracket is true if we opened a bracket on the row we just finished
          const justOpenedBracket = lastOpenBracketLocations[0] === row - 1;
          // justClosedBracket is true if we closed a bracket on the row we just finished
          const justClosedBracket = haveClosedBracket && lastClosedRow[1] === row - 1;
          // closedBracketOpenedAfterLineWithCurrentOpen is an ***extremely*** long name, and
          // it is true if the most recently closed bracket pair was opened on
          // a line AFTER the line where the current open bracket
          const closedBracketOpenedAfterLineWithCurrentOpen = haveClosedBracket &&
              lastClosedRow[0] > lastOpenBracketLocations[0];
          let indentColumn;
          if (!justOpenedBracket && !justClosedBracket) {
              // The bracket was opened before the previous line,
              // and we did not close a bracket on the previous line.
              // Thus, nothing has happened that could have changed the
              // indentation level since the previous line, so
              // we should use whatever indent we are given.
              return;
          } else if (justClosedBracket && closedBracketOpenedAfterLineWithCurrentOpen) {
              // A bracket that was opened after the most recent open
              // bracket was closed on the line we just finished typing.
              // We should use whatever indent was used on the row
              // where we opened the bracket we just closed. This needs
              // to be handled as a separate case from the last case below
              // in case the current bracket is using a hanging indent.
              // This handles cases such as
              // x = [0, 1, 2,
              //      [3, 4, 5,
              //       6, 7, 8],
              //      9, 10, 11]
              // which would be correctly handled by the case below, but it also correctly handles
              // x = [
              //     0, 1, 2, [3, 4, 5,
              //               6, 7, 8],
              //     9, 10, 11
              // ]
              // which the last case below would incorrectly indent an extra space
              // before the "9", because it would try to match it up with the
              // open bracket instead of using the hanging indent.
              const previousIndent = this.editor.indentationForBufferRow(lastClosedRow[0]);
              indentColumn = previousIndent * tabLength;
          } else {
              // lastOpenBracketLocations[1] is the column where the bracket was,
              // so need to bump up the indentation by one
              if (lastColonRow === lastClosedRow[1]) {
                  const indentationRow = lastClosedRow[0];
                  let indentLevel = this.editor.indentationForBufferRow(indentationRow);
                  indentLevel += 1;
                  this.editor.setIndentationForBufferRow(row, indentLevel);
                  const nextrow = row + 1;
                  this.editor.setIndentationForBufferRow(nextrow, indentLevel - 1);
                  return;
              }
              indentColumn = lastOpenBracketLocations[1] + 1;
          }
  
          // Calculate soft-tabs from spaces (can have remainder)
          let tabs = indentColumn / tabLength;
          const rem = (tabs - Math.floor(tabs)) * tabLength;
  
          // If there's a remainder, `@editor.buildIndentString` requires the tab to
          // be set past the desired indentation level, thus the ceiling.
          tabs = rem > 0 ? Math.ceil(tabs) : tabs;
  
          // Offset is the number of spaces to subtract from the soft-tabs if they
          // are past the desired indentation (not divisible by tab length).
          const offset = rem > 0 ? tabLength - rem : 0;
  
          // I'm glad Atom has an optional `column` param to subtract spaces from
          // soft-tabs, though I don't see it used anywhere in the core.
          // It looks like for hard tabs, the "tabs" input can be fractional and
          // the "column" input is ignored...?
          const indent = this.editor.buildIndentString(tabs, offset);
  
          // The range of text to replace with our indent
          // will need to change this for hard tabs, especially tricky for when
          // hard tabs have mixture of tabs + spaces, which they can judging from
          // the editor.buildIndentString function
          const startRange = [row, 0];
          const stopRange = [row, this.editor.indentationForBufferRow(row) * tabLength];
          this.editor.getBuffer().setTextInRange([startRange, stopRange], indent);
      }
  
      containsPlus(line) {
          let hasPlus = false;
          const c = line[line.length - 1];
          if (c === "+") {
              hasPlus = true;
          }
          return hasPlus;
      }
  
      endsWithAssignment(line) {
          let endswithassignment = false;
          if(line !== undefined){
            if (line.endsWith("<-")) {
                endswithassignment = true;
            }
          } else {
            line = "";
          }
  
          return endswithassignment;
      }
  
      containsPipe(line) {
          let hasPipe = false;
          if (line.endsWith("%>%") || line.endsWith("%$%") ||
          line.endsWith("%T>%") || line.endsWith("%<>%")) {
              hasPipe = true;
          }
          return hasPipe;
      }
  
      indentPlus(currentfunctionline, previousfunctionline) {
          let indentforplus = false;
          const plusatline = this.containsPlus(currentfunctionline);
          if (previousfunctionline.length > 1) {
              const plusaboveline = this.containsPlus(previousfunctionline);
              const assignmentaboveline = this.endsWithAssignment(previousfunctionline);
              if (plusatline && !plusaboveline && !assignmentaboveline) {
                  indentforplus = true;
              }
          } else {
              if (plusatline) {
                  indentforplus = true;
              }
          }
          return indentforplus;
      }
  
      deindentPlus(currentfunctionline, previousfunctionline) {
          let deindentforplus = false;
          const plusatline = this.containsPlus(currentfunctionline);
          if (previousfunctionline.length > 1) {
              const plusaboveline = this.containsPlus(previousfunctionline);
              if (!plusatline && plusaboveline) {
                  deindentforplus = true;
              }
          }
          return deindentforplus;
      }
  
      indentPipe(currentfunctionline, previousfunctionline) {
          let indentforpipe = false;
          const pipeatline = this.containsPipe(currentfunctionline);
          if (previousfunctionline.length > 1) {
              const pipeaboveline = this.containsPipe(previousfunctionline);
              const assignmentaboveline = this.endsWithAssignment(previousfunctionline);
              if (pipeatline && !pipeaboveline && !assignmentaboveline) {
                  indentforpipe = true;
              }
          } else {
              if (pipeatline) {
                  indentforpipe = true;
              }
          }
          return indentforpipe;
      }
  
      deindentPipe(currentfunctionline, previousfunctionline) {
          let deindentforpipe = false;
          const pipeatline = this.containsPipe(currentfunctionline);
          if (previousfunctionline.length > 1) {
              const pipeaboveline = this.containsPipe(previousfunctionline);
              if (!pipeatline && pipeaboveline) {
                  deindentforpipe = true;
              }
          }
          return deindentforpipe;
      }
  
      indentBinary(currentline, previousclosedline, currentIndentLevel) {
          const indentforplus = this.indentPlus(currentline, previousclosedline);
          const deindentforplus = this.deindentPlus(currentline, previousclosedline);
          const indentforpipe = this.indentPipe(currentline, previousclosedline);
          const deindentforpipe = this.deindentPipe(currentline, previousclosedline);
          let newindentlevel = currentIndentLevel;
          if (indentforplus || indentforpipe) {
              newindentlevel += 1;
          }
          if (deindentforplus || deindentforpipe) {
              newindentlevel -= 1;
          }
          return newindentlevel;
      }
  
      parseLines(lines) {
          // openBracketStack is an array of [row, col] indicating the location
          // of the opening bracket (square, curly, or parentheses)
          const openBracketStack = [];
          // lastClosedRow is either empty or [rowOpen, rowClose] describing the
          // rows where the latest closed bracket was opened and closed.
          let lastClosedRow = [];
          // If we are in a string, this tells us what character introduced the string
          // i.e., did this string start with ' or with "?
          let stringDelimiter = [];
          // This is the row of the last function definition
          let lastColonRow = NaN;
  
          // true if we are in a triple quoted string
          let inTripleQuotedString = false;
  
          // If we have seen two of the same string delimiters in a row,
          // then we have to check the next character to see if it matches
          // in order to correctly parse triple quoted strings.
          let checkNextCharForString = false;
  
          // keep track of the number of consecutive string delimiter's we've seen
          // used to tell if we are in a triple quoted string
          let numConsecutiveStringDelimiters = 0;
  
          // true if we should have a hanging indent, false otherwise
          let shouldHang = false;
          // NOTE: this parsing will only be correct if the python code is well-formed
          // statements like "[0, (1, 2])" might break the parsing
          // loop over each line
          for (const row of Array(lines.length).fill().map((_, i) => i)) {
              const line = lines[row];
  
  
              // boolean, whether or not the current character is being escaped
              // applicable when we are currently in a string
              let isEscaped = false;
  
              // This is the last defined def/for/if/elif/else/try/except row
              const lastlastColonRow = lastColonRow;
  
              for (const col of Array(line.length).fill().map((_, i) => i)) {
                  const c = line[col];
  
                  if (c === stringDelimiter && !isEscaped) {
                      numConsecutiveStringDelimiters += 1;
                  } else if (checkNextCharForString) {
                      numConsecutiveStringDelimiters = 0;
                      stringDelimiter = [];
                  } else {
                      numConsecutiveStringDelimiters = 0;
                  }
  
                  checkNextCharForString = false;
  
                  // If stringDelimiter is set, then we are in a string
                  // Note that this works correctly even for triple quoted strings
                  if (stringDelimiter.length) {
                      if (isEscaped) {
                          // If current character is escaped, then we do not care what it was,
                          // but since it is impossible for the next character to be escaped as well,
                          // go ahead and set that to false
                          isEscaped = false;
                      } else {
                          if (c === stringDelimiter) {
                              // We are seeing the same quote that started the string, i.e. ' or "
                              if (inTripleQuotedString) {
                                  if (numConsecutiveStringDelimiters === 3) {
                                      // Breaking out of the triple quoted string...
                                      numConsecutiveStringDelimiters = 0;
                                      stringDelimiter = [];
                                      inTripleQuotedString = false;
                                  }
                              } else if (numConsecutiveStringDelimiters === 3) {
                                  // reset the count, correctly handles cases like ''''''
                                  numConsecutiveStringDelimiters = 0;
                                  inTripleQuotedString = true;
                              } else if (numConsecutiveStringDelimiters === 2) {
                                  // We are not currently in a triple quoted string, and we've
                                  // seen two of the same string delimiter in a row. This could
                                  // either be an empty string, i.e. '' or "", or it could be
                                  // the start of a triple quoted string. We will check the next
                                  // character, and if it matches then we know we're in a triple
                                  // quoted string, and if it does not match we know we're not
                                  // in a string any more (i.e. it was the empty string).
                                  checkNextCharForString = true;
                              } else if (numConsecutiveStringDelimiters === 1) {
                                  // We are not in a string that is not triple quoted, and we've
                                  // just seen an un-escaped instance of that string delimiter.
                                  // In other words, we've left the string.
                                  // It is also worth noting that it is impossible for
                                  // numConsecutiveStringDelimiters to be 0 at this point, so
                                  // this set of if/else if statements covers all cases.
                                  stringDelimiter = [];
                              }
                          } else if (c === "\\") {
                              // We are seeing an unescaped backslash, the next character is escaped.
                              // Note that this is not exactly true in raw strings, HOWEVER, in raw
                              // strings you can still escape the quote mark by using a backslash.
                              // Since that's all we really care about as far as escaped characters
                              // go, we can assume we are now escaping the next character.
                              isEscaped = true;
                          }
                      }
                  } else {
                      if ("[(".includes(c)) {
                          openBracketStack.push([row, col]);
                          // If the only characters after this opening bracket are whitespace,
                          // then we should do a hanging indent. If there are other non-whitespace
                          // characters after this, then they will set the shouldHang boolean to false
                          shouldHang = true;
                      } else if (" \t\r\n".includes(c)) { // just in case there's a new line
                          // If it's whitespace, we don't care at all
                          // this check is necessary so we don't set shouldHang to false even if
                          // someone e.g. just entered a space between the opening bracket and the
                          // newline.
                          continue;
                      } else if (c === "#") {
                          // This check goes as well to make sure we don't set shouldHang
                          // to false in similar circumstances as described in the whitespace section.
                          break;
                      } else {
                          // We've already skipped if the character was white-space, an opening
                          // bracket, or a new line, so that means the current character is not
                          // whitespace and not an opening bracket, so shouldHang needs to get set to
                          // false.
                          shouldHang = false;
  
                          // Similar to above, we've already skipped all irrelevant characters,
                          // so if we saw a colon earlier in this line, then we would have
                          // incorrectly thought it was the end of a def/for/if/elif/else/try/except
                          // block when it was actually a dictionary being defined, reset the
                          // lastColonRow variable to whatever it was when we started parsing this
                          // line.
                          lastColonRow = lastlastColonRow;
  
                          // if (c === "{")
                          if ("{".includes(c)) {
                              lastColonRow = row;
                          } else if (")]".includes(c) && openBracketStack.length) {
                              // The .pop() will take the element off of the openBracketStack as it
                              // adds it to the array for lastClosedRow.
                              lastClosedRow = [openBracketStack.pop()[0], row];
                          } else if ("'\"".includes(c)) {
                              // Starting a string, keep track of what quote was used to start it.
                              stringDelimiter = c;
                              numConsecutiveStringDelimiters += 1;
                          }
                      }
                  }
              }
          }
          return { openBracketStack, lastClosedRow, shouldHang, lastColonRow };
      }
  
      indentHanging(row) {
          // Indent at the current block level plus the setting amount (1 or 2)
          const indent = (this.editor.indentationForBufferRow(row)) +
              (atom.config.get("python-indent.hangingIndentTabs"));
  
          // Set the indent
          this.editor.setIndentationForBufferRow(row, indent);
      }
  }
  