Function formatStringFactory

lib/web/CodeMirror/mode/python/python.js:183–242

(delimiter, tokenOuter)

    }

    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;