text: // CodeMirror, copyright (c) by Marijn Haverbeke and others
  // Distributed under an MIT license: https://codemirror.net/LICENSE
  
  (function (mod) {
      if (typeof exports == "object" && typeof module == "object") // CommonJS
          mod(require("../../lib/codemirror"));
      else if (typeof define == "function" && define.amd) // AMD
          define(["../../lib/codemirror"], mod);
      else // Plain browser env
          mod(CodeMirror);
  })(function (CodeMirror) {
      "use strict";
  
      function wordRegexp(words) {
          return new RegExp("^((" + words.join(")|(") + "))\\b");
      }
  
      var wordOperators = wordRegexp(["and", "or", "not", "is"]);
      var commonKeywords = ["as", "assert", "break", "class", "continue",
          "def", "del", "elif", "else", "except", "finally",
          "for", "from", "global", "if", "import",
          "lambda", "pass", "raise", "return",
          "try", "while", "with", "yield", "in"];
      var commonBuiltins = ["abs", "all", "any", "bin", "bool", "bytearray", "callable", "chr",
          "classmethod", "compile", "complex", "delattr", "dict", "dir", "divmod",
          "enumerate", "eval", "filter", "float", "format", "frozenset",
          "getattr", "globals", "hasattr", "hash", "help", "hex", "id",
          "input", "int", "isinstance", "issubclass", "iter", "len",
          "list", "locals", "map", "max", "memoryview", "min", "next",
          "object", "oct", "open", "ord", "pow", "property", "range",
          "repr", "reversed", "round", "set", "setattr", "slice",
          "sorted", "staticmethod", "str", "sum", "super", "tuple",
          "type", "vars", "zip", "__import__", "NotImplemented",
          "Ellipsis", "__debug__"];
      CodeMirror.registerHelper("hintWords", "python", commonKeywords.concat(commonBuiltins));
  
      function top(state) {
          return state.scopes[state.scopes.length - 1];
      }
  
      CodeMirror.defineMode("python", function (conf, parserConf) {
          var ERRORCLASS = "error";
  
          var delimiters = parserConf.delimiters || parserConf.singleDelimiters || /^[\(\)\[\]\{\}@,:`=;\.\\]/;
          //               (Backwards-compatibility with old, cumbersome config system)
          var operators = [parserConf.singleOperators, parserConf.doubleOperators, parserConf.doubleDelimiters, parserConf.tripleDelimiters,
              parserConf.operators || /^([-+*/%\/&|^]=?|[<>=]+|\/\/=?|\*\*=?|!=|[~!@]|\.\.\.)/]
          for (var i = 0; i < operators.length; i++) if (!operators[i]) operators.splice(i--, 1)
  
          var hangingIndent = parserConf.hangingIndent || conf.indentUnit;
  
          var myKeywords = commonKeywords, myBuiltins = commonBuiltins;
          if (parserConf.extra_keywords != undefined)
              myKeywords = myKeywords.concat(parserConf.extra_keywords);
  
          if (parserConf.extra_builtins != undefined)
              myBuiltins = myBuiltins.concat(parserConf.extra_builtins);
  
          var py3 = !(parserConf.version && Number(parserConf.version) < 3)
          if (py3) {
              // since http://legacy.python.org/dev/peps/pep-0465/ @ is also an operator
              var identifiers = parserConf.identifiers || /^[_A-Za-z\u00A1-\uFFFF][_A-Za-z0-9\u00A1-\uFFFF]*/;
              myKeywords = myKeywords.concat(["nonlocal", "False", "True", "None", "async", "await"]);
              myBuiltins = myBuiltins.concat(["ascii", "bytes", "exec", "print"]);
              var stringPrefixes = new RegExp("^(([rbuf]|(br)|(fr))?('{3}|\"{3}|['\"]))", "i");
          } else {
              var identifiers = parserConf.identifiers || /^[_A-Za-z][_A-Za-z0-9]*/;
              myKeywords = myKeywords.concat(["exec", "print"]);
              myBuiltins = myBuiltins.concat(["apply", "basestring", "buffer", "cmp", "coerce", "execfile",
                  "file", "intern", "long", "raw_input", "reduce", "reload",
                  "unichr", "unicode", "xrange", "False", "True", "None"]);
              var stringPrefixes = new RegExp("^(([rubf]|(ur)|(br))?('{3}|\"{3}|['\"]))", "i");
          }
          var keywords = wordRegexp(myKeywords);
          var builtins = wordRegexp(myBuiltins);
  
          // tokenizers
          function tokenBase(stream, state) {
              var sol = stream.sol() && state.lastToken != "\\"
              if (sol) state.indent = stream.indentation()
              // Handle scope changes
              if (sol && top(state).type == "py") {
                  var scopeOffset = top(state).offset;
                  if (stream.eatSpace()) {
                      var lineOffset = stream.indentation();
                      if (lineOffset > scopeOffset)
                          pushPyScope(state);
                      else if (lineOffset < scopeOffset && dedent(stream, state) && stream.peek() != "#")
                          state.errorToken = true;
                      return null;
                  } else {
                      var style = tokenBaseInner(stream, state);
                      if (scopeOffset > 0 && dedent(stream, state))
                          style += " " + ERRORCLASS;
                      return style;
                  }
              }
              return tokenBaseInner(stream, state);
          }
  
          function tokenBaseInner(stream, state, inFormat) {
              if (stream.eatSpace()) return null;
  
              // Handle Comments
              if (!inFormat && stream.match(/^#.*/)) return "comment";
  
              // Handle Number Literals
              if (stream.match(/^[0-9\.]/, false)) {
                  var floatLiteral = false;
                  // Floats
                  if (stream.match(/^[\d_]*\.\d+(e[\+\-]?\d+)?/i)) {
                      floatLiteral = true;
                  }
                  if (stream.match(/^[\d_]+\.\d*/)) {
                      floatLiteral = true;
                  }
                  if (stream.match(/^\.\d+/)) {
                      floatLiteral = true;
                  }
                  if (floatLiteral) {
                      // Float literals may be "imaginary"
                      stream.eat(/J/i);
                      return "number";
                  }
                  // Integers
                  var intLiteral = false;
                  // Hex
                  if (stream.match(/^0x[0-9a-f_]+/i)) intLiteral = true;
                  // Binary
                  if (stream.match(/^0b[01_]+/i)) intLiteral = true;
                  // Octal
                  if (stream.match(/^0o[0-7_]+/i)) intLiteral = true;
                  // Decimal
                  if (stream.match(/^[1-9][\d_]*(e[\+\-]?[\d_]+)?/)) {
                      // Decimal literals may be "imaginary"
                      stream.eat(/J/i);
                      // TODO - Can you have imaginary longs?
                      intLiteral = true;
                  }
                  // Zero by itself with no other piece of number.
                  if (stream.match(/^0(?![\dx])/i)) intLiteral = true;
                  if (intLiteral) {
                      // Integer literals may be "long"
                      stream.eat(/L/i);
                      return "number";
                  }
              }
  
              // Handle Strings
              if (stream.match(stringPrefixes)) {
                  var isFmtString = stream.current().toLowerCase().indexOf('f') !== -1;
                  if (!isFmtString) {
                      state.tokenize = tokenStringFactory(stream.current(), state.tokenize);
                      return state.tokenize(stream, state);
                  } else {
                      state.tokenize = formatStringFactory(stream.current(), state.tokenize);
                      return state.tokenize(stream, state);
                  }
              }
  
              for (var i = 0; i < operators.length; i++)
                  if (stream.match(operators[i])) return "operator"
  
              if (stream.match(delimiters)) return "punctuation";
  
              if (state.lastToken == "." && stream.match(identifiers))
                  return "property";
  
              if (stream.match(keywords) || stream.match(wordOperators))
                  return "keyword";
  
              if (stream.match(builtins))
                  return "builtin";
  
              if (stream.match(/^(self|cls)\b/))
                  return "variable-2";
  
              if (stream.match(identifiers)) {
                  if (state.lastToken == "def" || state.lastToken == "class")
                      return "def";
                  return "variable";
              }
  
              // Handle non-detected items
              stream.next();
              return inFormat ? null : ERRORCLASS;
          }
  
          function formatStringFactory(delimiter, tokenOuter) {
              while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
                  delimiter = delimiter.substr(1);
  
              var singleline = delimiter.length == 1;
              var OUTCLASS = "string";
  
              function tokenNestedExpr(depth) {
                  return function (stream, state) {
                      var inner = tokenBaseInner(stream, state, true)
                      if (inner == "punctuation") {
                          if (stream.current() == "{") {
                              state.tokenize = tokenNestedExpr(depth + 1)
                          } else if (stream.current() == "}") {
                              if (depth > 1) state.tokenize = tokenNestedExpr(depth - 1)
                              else state.tokenize = tokenString
                          }
                      }
                      return inner
                  }
              }
  
              function tokenString(stream, state) {
                  while (!stream.eol()) {
                      stream.eatWhile(/[^'"\{\}\\]/);
                      if (stream.eat("\\")) {
                          stream.next();
                          if (singleline && stream.eol())
                              return OUTCLASS;
                      } else if (stream.match(delimiter)) {
                          state.tokenize = tokenOuter;
                          return OUTCLASS;
                      } else if (stream.match('{{')) {
                          // ignore {{ in f-str
                          return OUTCLASS;
                      } else if (stream.match('{', false)) {
                          // switch to nested mode
                          state.tokenize = tokenNestedExpr(0)
                          if (stream.current()) return OUTCLASS;
                          else return state.tokenize(stream, state)
                      } else if (stream.match('}}')) {
                          return OUTCLASS;
                      } else if (stream.match('}')) {
                          // single } in f-string is an error
                          return ERRORCLASS;
                      } else {
                          stream.eat(/['"]/);
                      }
                  }
                  if (singleline) {
                      if (parserConf.singleLineStringErrors)
                          return ERRORCLASS;
                      else
                          state.tokenize = tokenOuter;
                  }
                  return OUTCLASS;
              }
  
              tokenString.isString = true;
              return tokenString;
          }
  
          function tokenStringFactory(delimiter, tokenOuter) {
              while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
                  delimiter = delimiter.substr(1);
  
              var singleline = delimiter.length == 1;
              var OUTCLASS = "string";
  
              function tokenString(stream, state) {
                  while (!stream.eol()) {
                      stream.eatWhile(/[^'"\\]/);
                      if (stream.eat("\\")) {
                          stream.next();
                          if (singleline && stream.eol())
                              return OUTCLASS;
                      } else if (stream.match(delimiter)) {
                          state.tokenize = tokenOuter;
                          return OUTCLASS;
                      } else {
                          stream.eat(/['"]/);
                      }
                  }
                  if (singleline) {
                      if (parserConf.singleLineStringErrors)
                          return ERRORCLASS;
                      else
                          state.tokenize = tokenOuter;
                  }
                  return OUTCLASS;
              }
  
              tokenString.isString = true;
              return tokenString;
          }
  
          function pushPyScope(state) {
              while (top(state).type != "py") state.scopes.pop()
              state.scopes.push({
                  offset: top(state).offset + conf.indentUnit,
                  type: "py",
                  align: null
              })
          }
  
          function pushBracketScope(stream, state, type) {
              var align = stream.match(/^([\s\[\{\(]|#.*)*$/, false) ? null : stream.column() + 1
              state.scopes.push({
                  offset: state.indent + hangingIndent,
                  type: type,
                  align: align
              })
          }
  
          function dedent(stream, state) {
              var indented = stream.indentation();
              while (state.scopes.length > 1 && top(state).offset > indented) {
                  if (top(state).type != "py") return true;
                  state.scopes.pop();
              }
              return top(state).offset != indented;
          }
  
          function tokenLexer(stream, state) {
              if (stream.sol()) state.beginningOfLine = true;
  
              var style = state.tokenize(stream, state);
              var current = stream.current();
  
              // Handle decorators
              if (state.beginningOfLine && current == "@")
                  return stream.match(identifiers, false) ? "meta" : py3 ? "operator" : ERRORCLASS;
  
              if (/\S/.test(current)) state.beginningOfLine = false;
  
              if ((style == "variable" || style == "builtin")
                  && state.lastToken == "meta")
                  style = "meta";
  
              // Handle scope changes.
              if (current == "pass" || current == "return")
                  state.dedent += 1;
  
              if (current == "lambda") state.lambda = true;
              if (current == ":" && !state.lambda && top(state).type == "py")
                  pushPyScope(state);
  
              if (current.length == 1 && !/string|comment/.test(style)) {
                  var delimiter_index = "[({".indexOf(current);
                  if (delimiter_index != -1)
                      pushBracketScope(stream, state, "])}".slice(delimiter_index, delimiter_index + 1));
  
                  delimiter_index = "])}".indexOf(current);
                  if (delimiter_index != -1) {
                      if (top(state).type == current) state.indent = state.scopes.pop().offset - hangingIndent
                      else return ERRORCLASS;
                  }
              }
              if (state.dedent > 0 && stream.eol() && top(state).type == "py") {
                  if (state.scopes.length > 1) state.scopes.pop();
                  state.dedent -= 1;
              }
  
              return style;
          }
  
          var external = {
              startState: function (basecolumn) {
                  return {
                      tokenize: tokenBase,
                      scopes: [{offset: basecolumn || 0, type: "py", align: null}],
                      indent: basecolumn || 0,
                      lastToken: null,
                      lambda: false,
                      dedent: 0
                  };
              },
  
              token: function (stream, state) {
                  var addErr = state.errorToken;
                  if (addErr) state.errorToken = false;
                  var style = tokenLexer(stream, state);
  
                  if (style && style != "comment")
                      state.lastToken = (style == "keyword" || style == "punctuation") ? stream.current() : style;
                  if (style == "punctuation") style = null;
  
                  if (stream.eol() && state.lambda)
                      state.lambda = false;
                  return addErr ? style + " " + ERRORCLASS : style;
              },
  
              indent: function (state, textAfter) {
                  if (state.tokenize != tokenBase)
                      return state.tokenize.isString ? CodeMirror.Pass : 0;
  
                  var scope = top(state), closing = scope.type == textAfter.charAt(0)
                  if (scope.align != null)
                      return scope.align - (closing ? 1 : 0)
                  else
                      return scope.offset - (closing ? hangingIndent : 0)
              },
  
              electricInput: /^\s*[\}\]\)]$/,
              closeBrackets: {triples: "'\""},
              lineComment: "#",
              fold: "indent"
          };
          return external;
      });
  
      CodeMirror.defineMIME("text/x-python", "python");
  
      var words = function (str) {
          return str.split(" ");
      };
  
      CodeMirror.defineMIME("text/x-cython", {
          name: "python",
          extra_keywords: words("by cdef cimport cpdef ctypedef enum except " +
              "extern gil include nogil property public " +
              "readonly struct union DEF IF ELIF ELSE")
      });
  
  });
  