| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781 | // 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";CodeMirror.defineMode("verilog", function(config, parserConfig) {  var indentUnit = config.indentUnit,      statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,      dontAlignCalls = parserConfig.dontAlignCalls,      // compilerDirectivesUseRegularIndentation - If set, Compiler directive      // indentation follows the same rules as everything else. Otherwise if      // false, compiler directives will track their own indentation.      // For example, `ifdef nested inside another `ifndef will be indented,      // but a `ifdef inside a function block may not be indented.      compilerDirectivesUseRegularIndentation = parserConfig.compilerDirectivesUseRegularIndentation,      noIndentKeywords = parserConfig.noIndentKeywords || [],      multiLineStrings = parserConfig.multiLineStrings,      hooks = parserConfig.hooks || {};  function words(str) {    var obj = {}, words = str.split(" ");    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;    return obj;  }  /**   * Keywords from IEEE 1800-2012   */  var keywords = words(    "accept_on alias always always_comb always_ff always_latch and assert assign assume automatic before begin bind " +    "bins binsof bit break buf bufif0 bufif1 byte case casex casez cell chandle checker class clocking cmos config " +    "const constraint context continue cover covergroup coverpoint cross deassign default defparam design disable " +    "dist do edge else end endcase endchecker endclass endclocking endconfig endfunction endgenerate endgroup " +    "endinterface endmodule endpackage endprimitive endprogram endproperty endspecify endsequence endtable endtask " +    "enum event eventually expect export extends extern final first_match for force foreach forever fork forkjoin " +    "function generate genvar global highz0 highz1 if iff ifnone ignore_bins illegal_bins implements implies import " +    "incdir include initial inout input inside instance int integer interconnect interface intersect join join_any " +    "join_none large let liblist library local localparam logic longint macromodule matches medium modport module " +    "nand negedge nettype new nexttime nmos nor noshowcancelled not notif0 notif1 null or output package packed " +    "parameter pmos posedge primitive priority program property protected pull0 pull1 pulldown pullup " +    "pulsestyle_ondetect pulsestyle_onevent pure rand randc randcase randsequence rcmos real realtime ref reg " +    "reject_on release repeat restrict return rnmos rpmos rtran rtranif0 rtranif1 s_always s_eventually s_nexttime " +    "s_until s_until_with scalared sequence shortint shortreal showcancelled signed small soft solve specify " +    "specparam static string strong strong0 strong1 struct super supply0 supply1 sync_accept_on sync_reject_on " +    "table tagged task this throughout time timeprecision timeunit tran tranif0 tranif1 tri tri0 tri1 triand trior " +    "trireg type typedef union unique unique0 unsigned until until_with untyped use uwire var vectored virtual void " +    "wait wait_order wand weak weak0 weak1 while wildcard wire with within wor xnor xor");  /** Operators from IEEE 1800-2012     unary_operator ::=       + | - | ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~     binary_operator ::=       + | - | * | / | % | == | != | === | !== | ==? | !=? | && | || | **       | < | <= | > | >= | & | | | ^ | ^~ | ~^ | >> | << | >>> | <<<       | -> | <->     inc_or_dec_operator ::= ++ | --     unary_module_path_operator ::=       ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~     binary_module_path_operator ::=       == | != | && | || | & | | | ^ | ^~ | ~^  */  var isOperatorChar = /[\+\-\*\/!~&|^%=?:<>]/;  var isBracketChar = /[\[\]{}()]/;  var unsignedNumber = /\d[0-9_]*/;  var decimalLiteral = /\d*\s*'s?d\s*\d[0-9_]*/i;  var binaryLiteral = /\d*\s*'s?b\s*[xz01][xz01_]*/i;  var octLiteral = /\d*\s*'s?o\s*[xz0-7][xz0-7_]*/i;  var hexLiteral = /\d*\s*'s?h\s*[0-9a-fxz?][0-9a-fxz?_]*/i;  var realLiteral = /(\d[\d_]*(\.\d[\d_]*)?E-?[\d_]+)|(\d[\d_]*\.\d[\d_]*)/i;  var closingBracketOrWord = /^((`?\w+)|[)}\]])/;  var closingBracket = /[)}\]]/;  var compilerDirectiveRegex      = new RegExp(    "^(`(?:ifdef|ifndef|elsif|else|endif|undef|undefineall|define|include|begin_keywords|celldefine|default|" +    "nettype|end_keywords|endcelldefine|line|nounconnected_drive|pragma|resetall|timescale|unconnected_drive))\\b");  var compilerDirectiveBeginRegex = /^(`(?:ifdef|ifndef|elsif|else))\b/;  var compilerDirectiveEndRegex   = /^(`(?:elsif|else|endif))\b/;  var curPunc;  var curKeyword;  // Block openings which are closed by a matching keyword in the form of ("end" + keyword)  // E.g. "task" => "endtask"  var blockKeywords = words(    "case checker class clocking config function generate interface module package " +    "primitive program property specify sequence table task"  );  // Opening/closing pairs  var openClose = {};  for (var keyword in blockKeywords) {    openClose[keyword] = "end" + keyword;  }  openClose["begin"] = "end";  openClose["casex"] = "endcase";  openClose["casez"] = "endcase";  openClose["do"   ] = "while";  openClose["fork" ] = "join;join_any;join_none";  openClose["covergroup"] = "endgroup";  openClose["macro_begin"] = "macro_end";  for (var i in noIndentKeywords) {    var keyword = noIndentKeywords[i];    if (openClose[keyword]) {      openClose[keyword] = undefined;    }  }  // Keywords which open statements that are ended with a semi-colon  var statementKeywords = words("always always_comb always_ff always_latch assert assign assume else export for foreach forever if import initial repeat while extern typedef");  function tokenBase(stream, state) {    var ch = stream.peek(), style;    if (hooks[ch] && (style = hooks[ch](stream, state)) != false) return style;    if (hooks.tokenBase && (style = hooks.tokenBase(stream, state)) != false)      return style;    if (/[,;:\.]/.test(ch)) {      curPunc = stream.next();      return null;    }    if (isBracketChar.test(ch)) {      curPunc = stream.next();      return "bracket";    }    // Macros (tick-defines)    if (ch == '`') {      stream.next();      if (stream.eatWhile(/[\w\$_]/)) {        var cur = stream.current();        curKeyword = cur;        // Macros that end in _begin, are start of block and end with _end        if (cur.startsWith("`uvm_") && cur.endsWith("_begin")) {          var keywordClose = curKeyword.substr(0,curKeyword.length - 5) + "end";          openClose[cur] = keywordClose;          curPunc = "newblock";        } else {          stream.eatSpace();          if (stream.peek() == '(') {            // Check if this is a block            curPunc = "newmacro";          }          var withSpace = stream.current();          // Move the stream back before the spaces          stream.backUp(withSpace.length - cur.length);        }        return "def";      } else {        return null;      }    }    // System calls    if (ch == '$') {      stream.next();      if (stream.eatWhile(/[\w\$_]/)) {        return "meta";      } else {        return null;      }    }    // Time literals    if (ch == '#') {      stream.next();      stream.eatWhile(/[\d_.]/);      return "def";    }    // Event    if (ch == '@') {      stream.next();      stream.eatWhile(/[@]/);      return "def";    }    // Strings    if (ch == '"') {      stream.next();      state.tokenize = tokenString(ch);      return state.tokenize(stream, state);    }    // Comments    if (ch == "/") {      stream.next();      if (stream.eat("*")) {        state.tokenize = tokenComment;        return tokenComment(stream, state);      }      if (stream.eat("/")) {        stream.skipToEnd();        return "comment";      }      stream.backUp(1);    }    // Numeric literals    if (stream.match(realLiteral) ||        stream.match(decimalLiteral) ||        stream.match(binaryLiteral) ||        stream.match(octLiteral) ||        stream.match(hexLiteral) ||        stream.match(unsignedNumber) ||        stream.match(realLiteral)) {      return "number";    }    // Operators    if (stream.eatWhile(isOperatorChar)) {      curPunc = stream.current();      return "meta";    }    // Keywords / plain variables    if (stream.eatWhile(/[\w\$_]/)) {      var cur = stream.current();      if (keywords[cur]) {        if (openClose[cur]) {          curPunc = "newblock";          if (cur === "fork") {            // Fork can be a statement instead of block in cases of:            // "disable fork;" and "wait fork;" (trailing semicolon)            stream.eatSpace()            if (stream.peek() == ';') {              curPunc = "newstatement";            }            stream.backUp(stream.current().length - cur.length);          }        }        if (statementKeywords[cur]) {          curPunc = "newstatement";        }        curKeyword = cur;        return "keyword";      }      return "variable";    }    stream.next();    return null;  }  function tokenString(quote) {    return function(stream, state) {      var escaped = false, next, end = false;      while ((next = stream.next()) != null) {        if (next == quote && !escaped) {end = true; break;}        escaped = !escaped && next == "\\";      }      if (end || !(escaped || multiLineStrings))        state.tokenize = tokenBase;      return "string";    };  }  function tokenComment(stream, state) {    var maybeEnd = false, ch;    while (ch = stream.next()) {      if (ch == "/" && maybeEnd) {        state.tokenize = tokenBase;        break;      }      maybeEnd = (ch == "*");    }    return "comment";  }  function Context(indented, column, type, scopekind, align, prev) {    this.indented = indented;    this.column = column;    this.type = type;    this.scopekind = scopekind;    this.align = align;    this.prev = prev;  }  function pushContext(state, col, type, scopekind) {    var indent = state.indented;    var c = new Context(indent, col, type, scopekind ? scopekind : "", null, state.context);    return state.context = c;  }  function popContext(state) {    var t = state.context.type;    if (t == ")" || t == "]" || t == "}") {      state.indented = state.context.indented;    }    return state.context = state.context.prev;  }  function isClosing(text, contextClosing) {    if (text == contextClosing) {      return true;    } else {      // contextClosing may be multiple keywords separated by ;      var closingKeywords = contextClosing.split(";");      for (var i in closingKeywords) {        if (text == closingKeywords[i]) {          return true;        }      }      return false;    }  }  function isInsideScopeKind(ctx, scopekind) {    if (ctx == null) {      return false;    }    if (ctx.scopekind === scopekind) {      return true;    }    return isInsideScopeKind(ctx.prev, scopekind);  }  function buildElectricInputRegEx() {    // Reindentation should occur on any bracket char: {}()[]    // or on a match of any of the block closing keywords, at    // the end of a line    var allClosings = [];    for (var i in openClose) {      if (openClose[i]) {        var closings = openClose[i].split(";");        for (var j in closings) {          allClosings.push(closings[j]);        }      }    }    var re = new RegExp("[{}()\\[\\]]|(" + allClosings.join("|") + ")$");    return re;  }  // Interface  return {    // Regex to force current line to reindent    electricInput: buildElectricInputRegEx(),    startState: function(basecolumn) {      var state = {        tokenize: null,        context: new Context((basecolumn || 0) - indentUnit, 0, "top", "top", false),        indented: 0,        compilerDirectiveIndented: 0,        startOfLine: true      };      if (hooks.startState) hooks.startState(state);      return state;    },    token: function(stream, state) {      var ctx = state.context;      if (stream.sol()) {        if (ctx.align == null) ctx.align = false;        state.indented = stream.indentation();        state.startOfLine = true;      }      if (hooks.token) {        // Call hook, with an optional return value of a style to override verilog styling.        var style = hooks.token(stream, state);        if (style !== undefined) {          return style;        }      }      if (stream.eatSpace()) return null;      curPunc = null;      curKeyword = null;      var style = (state.tokenize || tokenBase)(stream, state);      if (style == "comment" || style == "meta" || style == "variable") {        if (((curPunc === "=") || (curPunc === "<=")) && !isInsideScopeKind(ctx, "assignment")) {          // '<=' could be nonblocking assignment or lessthan-equals (which shouldn't cause indent)          //      Search through the context to see if we are already in an assignment.          // '=' could be inside port declaration with comma or ')' afterward, or inside for(;;) block.          pushContext(state, stream.column() + curPunc.length, "assignment", "assignment");          if (ctx.align == null) ctx.align = true;        }        return style;      }      if (ctx.align == null) ctx.align = true;      var isClosingAssignment = ctx.type == "assignment" &&        closingBracket.test(curPunc) && ctx.prev && ctx.prev.type === curPunc;      if (curPunc == ctx.type || isClosingAssignment) {        if (isClosingAssignment) {          ctx = popContext(state);        }        ctx = popContext(state);        if (curPunc == ")") {          // Handle closing macros, assuming they could have a semicolon or begin/end block inside.          if (ctx && (ctx.type === "macro")) {            ctx = popContext(state);            while (ctx && (ctx.type == "statement" || ctx.type == "assignment")) ctx = popContext(state);          }        } else if (curPunc == "}") {          // Handle closing statements like constraint block: "foreach () {}" which          // do not have semicolon at end.          if (ctx && (ctx.type === "statement")) {            while (ctx && (ctx.type == "statement")) ctx = popContext(state);          }        }      } else if (((curPunc == ";" || curPunc == ",") && (ctx.type == "statement" || ctx.type == "assignment")) ||               (ctx.type && isClosing(curKeyword, ctx.type))) {        ctx = popContext(state);        while (ctx && (ctx.type == "statement" || ctx.type == "assignment")) ctx = popContext(state);      } else if (curPunc == "{") {        pushContext(state, stream.column(), "}");      } else if (curPunc == "[") {        pushContext(state, stream.column(), "]");      } else if (curPunc == "(") {        pushContext(state, stream.column(), ")");      } else if (ctx && ctx.type == "endcase" && curPunc == ":") {        pushContext(state, stream.column(), "statement", "case");      } else if (curPunc == "newstatement") {        pushContext(state, stream.column(), "statement", curKeyword);      } else if (curPunc == "newblock") {        if (curKeyword == "function" && ctx && (ctx.type == "statement" || ctx.type == "endgroup")) {          // The 'function' keyword can appear in some other contexts where it actually does not          // indicate a function (import/export DPI and covergroup definitions).          // Do nothing in this case        } else if (curKeyword == "task" && ctx && ctx.type == "statement") {          // Same thing for task        } else if (curKeyword == "class" && ctx && ctx.type == "statement") {          // Same thing for class (e.g. typedef)        } else {          var close = openClose[curKeyword];          pushContext(state, stream.column(), close, curKeyword);        }      } else if (curPunc == "newmacro" || (curKeyword && curKeyword.match(compilerDirectiveRegex))) {        if (curPunc == "newmacro") {          // Macros (especially if they have parenthesis) potentially have a semicolon          // or complete statement/block inside, and should be treated as such.          pushContext(state, stream.column(), "macro", "macro");        }        if (curKeyword.match(compilerDirectiveEndRegex)) {          state.compilerDirectiveIndented -= statementIndentUnit;        }        if (curKeyword.match(compilerDirectiveBeginRegex)) {          state.compilerDirectiveIndented += statementIndentUnit;        }      }      state.startOfLine = false;      return style;    },    indent: function(state, textAfter) {      if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;      if (hooks.indent) {        var fromHook = hooks.indent(state);        if (fromHook >= 0) return fromHook;      }      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);      if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;      var closing = false;      var possibleClosing = textAfter.match(closingBracketOrWord);      if (possibleClosing)        closing = isClosing(possibleClosing[0], ctx.type);      if (!compilerDirectivesUseRegularIndentation && textAfter.match(compilerDirectiveRegex)) {        if (textAfter.match(compilerDirectiveEndRegex)) {          return state.compilerDirectiveIndented - statementIndentUnit;        }        return state.compilerDirectiveIndented;      }      if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);      else if ((closingBracket.test(ctx.type) || ctx.type == "assignment")        && ctx.align && !dontAlignCalls) return ctx.column + (closing ? 0 : 1);      else if (ctx.type == ")" && !closing) return ctx.indented + statementIndentUnit;      else return ctx.indented + (closing ? 0 : indentUnit);    },    blockCommentStart: "/*",    blockCommentEnd: "*/",    lineComment: "//",    fold: "indent"  };});  CodeMirror.defineMIME("text/x-verilog", {    name: "verilog"  });  CodeMirror.defineMIME("text/x-systemverilog", {    name: "verilog"  });  // TL-Verilog mode.  // See tl-x.org for language spec.  // See the mode in action at makerchip.com.  // Contact: steve.hoover@redwoodeda.com  // TLV Identifier prefixes.  // Note that sign is not treated separately, so "+/-" versions of numeric identifiers  // are included.  var tlvIdentifierStyle = {    "|": "link",    ">": "property",  // Should condition this off for > TLV 1c.    "$": "variable",    "$$": "variable",    "?$": "qualifier",    "?*": "qualifier",    "-": "hr",    "/": "property",    "/-": "property",    "@": "variable-3",    "@-": "variable-3",    "@++": "variable-3",    "@+=": "variable-3",    "@+=-": "variable-3",    "@--": "variable-3",    "@-=": "variable-3",    "%+": "tag",    "%-": "tag",    "%": "tag",    ">>": "tag",    "<<": "tag",    "<>": "tag",    "#": "tag",  // Need to choose a style for this.    "^": "attribute",    "^^": "attribute",    "^!": "attribute",    "*": "variable-2",    "**": "variable-2",    "\\": "keyword",    "\"": "comment"  };  // Lines starting with these characters define scope (result in indentation).  var tlvScopePrefixChars = {    "/": "beh-hier",    ">": "beh-hier",    "-": "phys-hier",    "|": "pipe",    "?": "when",    "@": "stage",    "\\": "keyword"  };  var tlvIndentUnit = 3;  var tlvTrackStatements = false;  var tlvIdentMatch = /^([~!@#\$%\^&\*-\+=\?\/\\\|'"<>]+)([\d\w_]*)/;  // Matches an identifier.  // Note that ':' is excluded, because of it's use in [:].  var tlvFirstLevelIndentMatch = /^[! ]  /;  var tlvLineIndentationMatch = /^[! ] */;  var tlvCommentMatch = /^\/[\/\*]/;  // Returns a style specific to the scope at the given indentation column.  // Type is one of: "indent", "scope-ident", "before-scope-ident".  function tlvScopeStyle(state, indentation, type) {    // Begin scope.    var depth = indentation / tlvIndentUnit;  // TODO: Pass this in instead.    return "tlv-" + state.tlvIndentationStyle[depth] + "-" + type;  }  // Return true if the next thing in the stream is an identifier with a mnemonic.  function tlvIdentNext(stream) {    var match;    return (match = stream.match(tlvIdentMatch, false)) && match[2].length > 0;  }  CodeMirror.defineMIME("text/x-tlv", {    name: "verilog",    hooks: {      electricInput: false,      // Return undefined for verilog tokenizing, or style for TLV token (null not used).      // Standard CM styles are used for most formatting, but some TL-Verilog-specific highlighting      // can be enabled with the definition of cm-tlv-* styles, including highlighting for:      //   - M4 tokens      //   - TLV scope indentation      //   - Statement delimitation (enabled by tlvTrackStatements)      token: function(stream, state) {        var style = undefined;        var match;  // Return value of pattern matches.        // Set highlighting mode based on code region (TLV or SV).        if (stream.sol() && ! state.tlvInBlockComment) {          // Process region.          if (stream.peek() == '\\') {            style = "def";            stream.skipToEnd();            if (stream.string.match(/\\SV/)) {              state.tlvCodeActive = false;            } else if (stream.string.match(/\\TLV/)){              state.tlvCodeActive = true;            }          }          // Correct indentation in the face of a line prefix char.          if (state.tlvCodeActive && stream.pos == 0 &&              (state.indented == 0) && (match = stream.match(tlvLineIndentationMatch, false))) {            state.indented = match[0].length;          }          // Compute indentation state:          //   o Auto indentation on next line          //   o Indentation scope styles          var indented = state.indented;          var depth = indented / tlvIndentUnit;          if (depth <= state.tlvIndentationStyle.length) {            // not deeper than current scope            var blankline = stream.string.length == indented;            var chPos = depth * tlvIndentUnit;            if (chPos < stream.string.length) {              var bodyString = stream.string.slice(chPos);              var ch = bodyString[0];              if (tlvScopePrefixChars[ch] && ((match = bodyString.match(tlvIdentMatch)) &&                  tlvIdentifierStyle[match[1]])) {                // This line begins scope.                // Next line gets indented one level.                indented += tlvIndentUnit;                // Style the next level of indentation (except non-region keyword identifiers,                //   which are statements themselves)                if (!(ch == "\\" && chPos > 0)) {                  state.tlvIndentationStyle[depth] = tlvScopePrefixChars[ch];                  if (tlvTrackStatements) {state.statementComment = false;}                  depth++;                }              }            }            // Clear out deeper indentation levels unless line is blank.            if (!blankline) {              while (state.tlvIndentationStyle.length > depth) {                state.tlvIndentationStyle.pop();              }            }          }          // Set next level of indentation.          state.tlvNextIndent = indented;        }        if (state.tlvCodeActive) {          // Highlight as TLV.          var beginStatement = false;          if (tlvTrackStatements) {            // This starts a statement if the position is at the scope level            // and we're not within a statement leading comment.            beginStatement =                   (stream.peek() != " ") &&   // not a space                   (style === undefined) &&    // not a region identifier                   !state.tlvInBlockComment && // not in block comment                   //!stream.match(tlvCommentMatch, false) && // not comment start                   (stream.column() == state.tlvIndentationStyle.length * tlvIndentUnit);  // at scope level            if (beginStatement) {              if (state.statementComment) {                // statement already started by comment                beginStatement = false;              }              state.statementComment =                   stream.match(tlvCommentMatch, false); // comment start            }          }          var match;          if (style !== undefined) {            // Region line.            style += " " + tlvScopeStyle(state, 0, "scope-ident")          } else if (((stream.pos / tlvIndentUnit) < state.tlvIndentationStyle.length) &&                     (match = stream.match(stream.sol() ? tlvFirstLevelIndentMatch : /^   /))) {            // Indentation            style = // make this style distinct from the previous one to prevent                    // codemirror from combining spans                    "tlv-indent-" + (((stream.pos % 2) == 0) ? "even" : "odd") +                    // and style it                    " " + tlvScopeStyle(state, stream.pos - tlvIndentUnit, "indent");            // Style the line prefix character.            if (match[0].charAt(0) == "!") {              style += " tlv-alert-line-prefix";            }            // Place a class before a scope identifier.            if (tlvIdentNext(stream)) {              style += " " + tlvScopeStyle(state, stream.pos, "before-scope-ident");            }          } else if (state.tlvInBlockComment) {            // In a block comment.            if (stream.match(/^.*?\*\//)) {              // Exit block comment.              state.tlvInBlockComment = false;              if (tlvTrackStatements && !stream.eol()) {                // Anything after comment is assumed to be real statement content.                state.statementComment = false;              }            } else {              stream.skipToEnd();            }            style = "comment";          } else if ((match = stream.match(tlvCommentMatch)) && !state.tlvInBlockComment) {            // Start comment.            if (match[0] == "//") {              // Line comment.              stream.skipToEnd();            } else {              // Block comment.              state.tlvInBlockComment = true;            }            style = "comment";          } else if (match = stream.match(tlvIdentMatch)) {            // looks like an identifier (or identifier prefix)            var prefix = match[1];            var mnemonic = match[2];            if (// is identifier prefix                tlvIdentifierStyle.hasOwnProperty(prefix) &&                // has mnemonic or we're at the end of the line (maybe it hasn't been typed yet)                (mnemonic.length > 0 || stream.eol())) {              style = tlvIdentifierStyle[prefix];              if (stream.column() == state.indented) {                // Begin scope.                style += " " + tlvScopeStyle(state, stream.column(), "scope-ident")              }            } else {              // Just swallow one character and try again.              // This enables subsequent identifier match with preceding symbol character, which              //   is legal within a statement.  (E.g., !$reset).  It also enables detection of              //   comment start with preceding symbols.              stream.backUp(stream.current().length - 1);              style = "tlv-default";            }          } else if (stream.match(/^\t+/)) {            // Highlight tabs, which are illegal.            style = "tlv-tab";          } else if (stream.match(/^[\[\]{}\(\);\:]+/)) {            // [:], (), {}, ;.            style = "meta";          } else if (match = stream.match(/^[mM]4([\+_])?[\w\d_]*/)) {            // m4 pre proc            style = (match[1] == "+") ? "tlv-m4-plus" : "tlv-m4";          } else if (stream.match(/^ +/)){            // Skip over spaces.            if (stream.eol()) {              // Trailing spaces.              style = "error";            } else {              // Non-trailing spaces.              style = "tlv-default";            }          } else if (stream.match(/^[\w\d_]+/)) {            // alpha-numeric token.            style = "number";          } else {            // Eat the next char w/ no formatting.            stream.next();            style = "tlv-default";          }          if (beginStatement) {            style += " tlv-statement";          }        } else {          if (stream.match(/^[mM]4([\w\d_]*)/)) {            // m4 pre proc            style = "tlv-m4";          }        }        return style;      },      indent: function(state) {        return (state.tlvCodeActive == true) ? state.tlvNextIndent : -1;      },      startState: function(state) {        state.tlvIndentationStyle = [];  // Styles to use for each level of indentation.        state.tlvCodeActive = true;  // True when we're in a TLV region (and at beginning of file).        state.tlvNextIndent = -1;    // The number of spaces to autoindent the next line if tlvCodeActive.        state.tlvInBlockComment = false;  // True inside /**/ comment.        if (tlvTrackStatements) {          state.statementComment = false;  // True inside a statement's header comment.        }      }    }  });});
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