all repos — NoPaste @ 29b774f090102303e43cf939b38ac2083e62d9f1

Resurrected - The PussTheCat.org fork of NoPaste

scripts/CodeMirror/mode/verilog/verilog.js (view raw)

  1// CodeMirror, copyright (c) by Marijn Haverbeke and others
  2// Distributed under an MIT license: https://codemirror.net/LICENSE
  3
  4(function(mod) {
  5  if (typeof exports == "object" && typeof module == "object") // CommonJS
  6    mod(require("../../lib/codemirror"));
  7  else if (typeof define == "function" && define.amd) // AMD
  8    define(["../../lib/codemirror"], mod);
  9  else // Plain browser env
 10    mod(CodeMirror);
 11})(function(CodeMirror) {
 12"use strict";
 13
 14CodeMirror.defineMode("verilog", function(config, parserConfig) {
 15
 16  var indentUnit = config.indentUnit,
 17      statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,
 18      dontAlignCalls = parserConfig.dontAlignCalls,
 19      noIndentKeywords = parserConfig.noIndentKeywords || [],
 20      multiLineStrings = parserConfig.multiLineStrings,
 21      hooks = parserConfig.hooks || {};
 22
 23  function words(str) {
 24    var obj = {}, words = str.split(" ");
 25    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
 26    return obj;
 27  }
 28
 29  /**
 30   * Keywords from IEEE 1800-2012
 31   */
 32  var keywords = words(
 33    "accept_on alias always always_comb always_ff always_latch and assert assign assume automatic before begin bind " +
 34    "bins binsof bit break buf bufif0 bufif1 byte case casex casez cell chandle checker class clocking cmos config " +
 35    "const constraint context continue cover covergroup coverpoint cross deassign default defparam design disable " +
 36    "dist do edge else end endcase endchecker endclass endclocking endconfig endfunction endgenerate endgroup " +
 37    "endinterface endmodule endpackage endprimitive endprogram endproperty endspecify endsequence endtable endtask " +
 38    "enum event eventually expect export extends extern final first_match for force foreach forever fork forkjoin " +
 39    "function generate genvar global highz0 highz1 if iff ifnone ignore_bins illegal_bins implements implies import " +
 40    "incdir include initial inout input inside instance int integer interconnect interface intersect join join_any " +
 41    "join_none large let liblist library local localparam logic longint macromodule matches medium modport module " +
 42    "nand negedge nettype new nexttime nmos nor noshowcancelled not notif0 notif1 null or output package packed " +
 43    "parameter pmos posedge primitive priority program property protected pull0 pull1 pulldown pullup " +
 44    "pulsestyle_ondetect pulsestyle_onevent pure rand randc randcase randsequence rcmos real realtime ref reg " +
 45    "reject_on release repeat restrict return rnmos rpmos rtran rtranif0 rtranif1 s_always s_eventually s_nexttime " +
 46    "s_until s_until_with scalared sequence shortint shortreal showcancelled signed small soft solve specify " +
 47    "specparam static string strong strong0 strong1 struct super supply0 supply1 sync_accept_on sync_reject_on " +
 48    "table tagged task this throughout time timeprecision timeunit tran tranif0 tranif1 tri tri0 tri1 triand trior " +
 49    "trireg type typedef union unique unique0 unsigned until until_with untyped use uwire var vectored virtual void " +
 50    "wait wait_order wand weak weak0 weak1 while wildcard wire with within wor xnor xor");
 51
 52  /** Operators from IEEE 1800-2012
 53     unary_operator ::=
 54       + | - | ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
 55     binary_operator ::=
 56       + | - | * | / | % | == | != | === | !== | ==? | !=? | && | || | **
 57       | < | <= | > | >= | & | | | ^ | ^~ | ~^ | >> | << | >>> | <<<
 58       | -> | <->
 59     inc_or_dec_operator ::= ++ | --
 60     unary_module_path_operator ::=
 61       ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
 62     binary_module_path_operator ::=
 63       == | != | && | || | & | | | ^ | ^~ | ~^
 64  */
 65  var isOperatorChar = /[\+\-\*\/!~&|^%=?:]/;
 66  var isBracketChar = /[\[\]{}()]/;
 67
 68  var unsignedNumber = /\d[0-9_]*/;
 69  var decimalLiteral = /\d*\s*'s?d\s*\d[0-9_]*/i;
 70  var binaryLiteral = /\d*\s*'s?b\s*[xz01][xz01_]*/i;
 71  var octLiteral = /\d*\s*'s?o\s*[xz0-7][xz0-7_]*/i;
 72  var hexLiteral = /\d*\s*'s?h\s*[0-9a-fxz?][0-9a-fxz?_]*/i;
 73  var realLiteral = /(\d[\d_]*(\.\d[\d_]*)?E-?[\d_]+)|(\d[\d_]*\.\d[\d_]*)/i;
 74
 75  var closingBracketOrWord = /^((\w+)|[)}\]])/;
 76  var closingBracket = /[)}\]]/;
 77
 78  var curPunc;
 79  var curKeyword;
 80
 81  // Block openings which are closed by a matching keyword in the form of ("end" + keyword)
 82  // E.g. "task" => "endtask"
 83  var blockKeywords = words(
 84    "case checker class clocking config function generate interface module package " +
 85    "primitive program property specify sequence table task"
 86  );
 87
 88  // Opening/closing pairs
 89  var openClose = {};
 90  for (var keyword in blockKeywords) {
 91    openClose[keyword] = "end" + keyword;
 92  }
 93  openClose["begin"] = "end";
 94  openClose["casex"] = "endcase";
 95  openClose["casez"] = "endcase";
 96  openClose["do"   ] = "while";
 97  openClose["fork" ] = "join;join_any;join_none";
 98  openClose["covergroup"] = "endgroup";
 99
100  for (var i in noIndentKeywords) {
101    var keyword = noIndentKeywords[i];
102    if (openClose[keyword]) {
103      openClose[keyword] = undefined;
104    }
105  }
106
107  // Keywords which open statements that are ended with a semi-colon
108  var statementKeywords = words("always always_comb always_ff always_latch assert assign assume else export for foreach forever if import initial repeat while");
109
110  function tokenBase(stream, state) {
111    var ch = stream.peek(), style;
112    if (hooks[ch] && (style = hooks[ch](stream, state)) != false) return style;
113    if (hooks.tokenBase && (style = hooks.tokenBase(stream, state)) != false)
114      return style;
115
116    if (/[,;:\.]/.test(ch)) {
117      curPunc = stream.next();
118      return null;
119    }
120    if (isBracketChar.test(ch)) {
121      curPunc = stream.next();
122      return "bracket";
123    }
124    // Macros (tick-defines)
125    if (ch == '`') {
126      stream.next();
127      if (stream.eatWhile(/[\w\$_]/)) {
128        return "def";
129      } else {
130        return null;
131      }
132    }
133    // System calls
134    if (ch == '$') {
135      stream.next();
136      if (stream.eatWhile(/[\w\$_]/)) {
137        return "meta";
138      } else {
139        return null;
140      }
141    }
142    // Time literals
143    if (ch == '#') {
144      stream.next();
145      stream.eatWhile(/[\d_.]/);
146      return "def";
147    }
148    // Strings
149    if (ch == '"') {
150      stream.next();
151      state.tokenize = tokenString(ch);
152      return state.tokenize(stream, state);
153    }
154    // Comments
155    if (ch == "/") {
156      stream.next();
157      if (stream.eat("*")) {
158        state.tokenize = tokenComment;
159        return tokenComment(stream, state);
160      }
161      if (stream.eat("/")) {
162        stream.skipToEnd();
163        return "comment";
164      }
165      stream.backUp(1);
166    }
167
168    // Numeric literals
169    if (stream.match(realLiteral) ||
170        stream.match(decimalLiteral) ||
171        stream.match(binaryLiteral) ||
172        stream.match(octLiteral) ||
173        stream.match(hexLiteral) ||
174        stream.match(unsignedNumber) ||
175        stream.match(realLiteral)) {
176      return "number";
177    }
178
179    // Operators
180    if (stream.eatWhile(isOperatorChar)) {
181      return "meta";
182    }
183
184    // Keywords / plain variables
185    if (stream.eatWhile(/[\w\$_]/)) {
186      var cur = stream.current();
187      if (keywords[cur]) {
188        if (openClose[cur]) {
189          curPunc = "newblock";
190        }
191        if (statementKeywords[cur]) {
192          curPunc = "newstatement";
193        }
194        curKeyword = cur;
195        return "keyword";
196      }
197      return "variable";
198    }
199
200    stream.next();
201    return null;
202  }
203
204  function tokenString(quote) {
205    return function(stream, state) {
206      var escaped = false, next, end = false;
207      while ((next = stream.next()) != null) {
208        if (next == quote && !escaped) {end = true; break;}
209        escaped = !escaped && next == "\\";
210      }
211      if (end || !(escaped || multiLineStrings))
212        state.tokenize = tokenBase;
213      return "string";
214    };
215  }
216
217  function tokenComment(stream, state) {
218    var maybeEnd = false, ch;
219    while (ch = stream.next()) {
220      if (ch == "/" && maybeEnd) {
221        state.tokenize = tokenBase;
222        break;
223      }
224      maybeEnd = (ch == "*");
225    }
226    return "comment";
227  }
228
229  function Context(indented, column, type, align, prev) {
230    this.indented = indented;
231    this.column = column;
232    this.type = type;
233    this.align = align;
234    this.prev = prev;
235  }
236  function pushContext(state, col, type) {
237    var indent = state.indented;
238    var c = new Context(indent, col, type, null, state.context);
239    return state.context = c;
240  }
241  function popContext(state) {
242    var t = state.context.type;
243    if (t == ")" || t == "]" || t == "}") {
244      state.indented = state.context.indented;
245    }
246    return state.context = state.context.prev;
247  }
248
249  function isClosing(text, contextClosing) {
250    if (text == contextClosing) {
251      return true;
252    } else {
253      // contextClosing may be multiple keywords separated by ;
254      var closingKeywords = contextClosing.split(";");
255      for (var i in closingKeywords) {
256        if (text == closingKeywords[i]) {
257          return true;
258        }
259      }
260      return false;
261    }
262  }
263
264  function buildElectricInputRegEx() {
265    // Reindentation should occur on any bracket char: {}()[]
266    // or on a match of any of the block closing keywords, at
267    // the end of a line
268    var allClosings = [];
269    for (var i in openClose) {
270      if (openClose[i]) {
271        var closings = openClose[i].split(";");
272        for (var j in closings) {
273          allClosings.push(closings[j]);
274        }
275      }
276    }
277    var re = new RegExp("[{}()\\[\\]]|(" + allClosings.join("|") + ")$");
278    return re;
279  }
280
281  // Interface
282  return {
283
284    // Regex to force current line to reindent
285    electricInput: buildElectricInputRegEx(),
286
287    startState: function(basecolumn) {
288      var state = {
289        tokenize: null,
290        context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
291        indented: 0,
292        startOfLine: true
293      };
294      if (hooks.startState) hooks.startState(state);
295      return state;
296    },
297
298    token: function(stream, state) {
299      var ctx = state.context;
300      if (stream.sol()) {
301        if (ctx.align == null) ctx.align = false;
302        state.indented = stream.indentation();
303        state.startOfLine = true;
304      }
305      if (hooks.token) {
306        // Call hook, with an optional return value of a style to override verilog styling.
307        var style = hooks.token(stream, state);
308        if (style !== undefined) {
309          return style;
310        }
311      }
312      if (stream.eatSpace()) return null;
313      curPunc = null;
314      curKeyword = null;
315      var style = (state.tokenize || tokenBase)(stream, state);
316      if (style == "comment" || style == "meta" || style == "variable") return style;
317      if (ctx.align == null) ctx.align = true;
318
319      if (curPunc == ctx.type) {
320        popContext(state);
321      } else if ((curPunc == ";" && ctx.type == "statement") ||
322               (ctx.type && isClosing(curKeyword, ctx.type))) {
323        ctx = popContext(state);
324        while (ctx && ctx.type == "statement") ctx = popContext(state);
325      } else if (curPunc == "{") {
326        pushContext(state, stream.column(), "}");
327      } else if (curPunc == "[") {
328        pushContext(state, stream.column(), "]");
329      } else if (curPunc == "(") {
330        pushContext(state, stream.column(), ")");
331      } else if (ctx && ctx.type == "endcase" && curPunc == ":") {
332        pushContext(state, stream.column(), "statement");
333      } else if (curPunc == "newstatement") {
334        pushContext(state, stream.column(), "statement");
335      } else if (curPunc == "newblock") {
336        if (curKeyword == "function" && ctx && (ctx.type == "statement" || ctx.type == "endgroup")) {
337          // The 'function' keyword can appear in some other contexts where it actually does not
338          // indicate a function (import/export DPI and covergroup definitions).
339          // Do nothing in this case
340        } else if (curKeyword == "task" && ctx && ctx.type == "statement") {
341          // Same thing for task
342        } else {
343          var close = openClose[curKeyword];
344          pushContext(state, stream.column(), close);
345        }
346      }
347
348      state.startOfLine = false;
349      return style;
350    },
351
352    indent: function(state, textAfter) {
353      if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
354      if (hooks.indent) {
355        var fromHook = hooks.indent(state);
356        if (fromHook >= 0) return fromHook;
357      }
358      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
359      if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;
360      var closing = false;
361      var possibleClosing = textAfter.match(closingBracketOrWord);
362      if (possibleClosing)
363        closing = isClosing(possibleClosing[0], ctx.type);
364      if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);
365      else if (closingBracket.test(ctx.type) && ctx.align && !dontAlignCalls) return ctx.column + (closing ? 0 : 1);
366      else if (ctx.type == ")" && !closing) return ctx.indented + statementIndentUnit;
367      else return ctx.indented + (closing ? 0 : indentUnit);
368    },
369
370    blockCommentStart: "/*",
371    blockCommentEnd: "*/",
372    lineComment: "//",
373    fold: "indent"
374  };
375});
376
377  CodeMirror.defineMIME("text/x-verilog", {
378    name: "verilog"
379  });
380
381  CodeMirror.defineMIME("text/x-systemverilog", {
382    name: "verilog"
383  });
384
385
386
387  // TL-Verilog mode.
388  // See tl-x.org for language spec.
389  // See the mode in action at makerchip.com.
390  // Contact: steve.hoover@redwoodeda.com
391
392  // TLV Identifier prefixes.
393  // Note that sign is not treated separately, so "+/-" versions of numeric identifiers
394  // are included.
395  var tlvIdentifierStyle = {
396    "|": "link",
397    ">": "property",  // Should condition this off for > TLV 1c.
398    "$": "variable",
399    "$$": "variable",
400    "?$": "qualifier",
401    "?*": "qualifier",
402    "-": "hr",
403    "/": "property",
404    "/-": "property",
405    "@": "variable-3",
406    "@-": "variable-3",
407    "@++": "variable-3",
408    "@+=": "variable-3",
409    "@+=-": "variable-3",
410    "@--": "variable-3",
411    "@-=": "variable-3",
412    "%+": "tag",
413    "%-": "tag",
414    "%": "tag",
415    ">>": "tag",
416    "<<": "tag",
417    "<>": "tag",
418    "#": "tag",  // Need to choose a style for this.
419    "^": "attribute",
420    "^^": "attribute",
421    "^!": "attribute",
422    "*": "variable-2",
423    "**": "variable-2",
424    "\\": "keyword",
425    "\"": "comment"
426  };
427
428  // Lines starting with these characters define scope (result in indentation).
429  var tlvScopePrefixChars = {
430    "/": "beh-hier",
431    ">": "beh-hier",
432    "-": "phys-hier",
433    "|": "pipe",
434    "?": "when",
435    "@": "stage",
436    "\\": "keyword"
437  };
438  var tlvIndentUnit = 3;
439  var tlvTrackStatements = false;
440  var tlvIdentMatch = /^([~!@#\$%\^&\*-\+=\?\/\\\|'"<>]+)([\d\w_]*)/;  // Matches an identifiere.
441  // Note that ':' is excluded, because of it's use in [:].
442  var tlvFirstLevelIndentMatch = /^[! ]  /;
443  var tlvLineIndentationMatch = /^[! ] */;
444  var tlvCommentMatch = /^\/[\/\*]/;
445
446
447  // Returns a style specific to the scope at the given indentation column.
448  // Type is one of: "indent", "scope-ident", "before-scope-ident".
449  function tlvScopeStyle(state, indentation, type) {
450    // Begin scope.
451    var depth = indentation / tlvIndentUnit;  // TODO: Pass this in instead.
452    return "tlv-" + state.tlvIndentationStyle[depth] + "-" + type;
453  }
454
455  // Return true if the next thing in the stream is an identifier with a mnemonic.
456  function tlvIdentNext(stream) {
457    var match;
458    return (match = stream.match(tlvIdentMatch, false)) && match[2].length > 0;
459  }
460
461  CodeMirror.defineMIME("text/x-tlv", {
462    name: "verilog",
463
464    hooks: {
465
466      electricInput: false,
467
468
469      // Return undefined for verilog tokenizing, or style for TLV token (null not used).
470      // Standard CM styles are used for most formatting, but some TL-Verilog-specific highlighting
471      // can be enabled with the definition of cm-tlv-* styles, including highlighting for:
472      //   - M4 tokens
473      //   - TLV scope indentation
474      //   - Statement delimitation (enabled by tlvTrackStatements)
475      token: function(stream, state) {
476        var style = undefined;
477        var match;  // Return value of pattern matches.
478
479        // Set highlighting mode based on code region (TLV or SV).
480        if (stream.sol() && ! state.tlvInBlockComment) {
481          // Process region.
482          if (stream.peek() == '\\') {
483            style = "def";
484            stream.skipToEnd();
485            if (stream.string.match(/\\SV/)) {
486              state.tlvCodeActive = false;
487            } else if (stream.string.match(/\\TLV/)){
488              state.tlvCodeActive = true;
489            }
490          }
491          // Correct indentation in the face of a line prefix char.
492          if (state.tlvCodeActive && stream.pos == 0 &&
493              (state.indented == 0) && (match = stream.match(tlvLineIndentationMatch, false))) {
494            state.indented = match[0].length;
495          }
496
497          // Compute indentation state:
498          //   o Auto indentation on next line
499          //   o Indentation scope styles
500          var indented = state.indented;
501          var depth = indented / tlvIndentUnit;
502          if (depth <= state.tlvIndentationStyle.length) {
503            // not deeper than current scope
504
505            var blankline = stream.string.length == indented;
506            var chPos = depth * tlvIndentUnit;
507            if (chPos < stream.string.length) {
508              var bodyString = stream.string.slice(chPos);
509              var ch = bodyString[0];
510              if (tlvScopePrefixChars[ch] && ((match = bodyString.match(tlvIdentMatch)) &&
511                  tlvIdentifierStyle[match[1]])) {
512                // This line begins scope.
513                // Next line gets indented one level.
514                indented += tlvIndentUnit;
515                // Style the next level of indentation (except non-region keyword identifiers,
516                //   which are statements themselves)
517                if (!(ch == "\\" && chPos > 0)) {
518                  state.tlvIndentationStyle[depth] = tlvScopePrefixChars[ch];
519                  if (tlvTrackStatements) {state.statementComment = false;}
520                  depth++;
521                }
522              }
523            }
524            // Clear out deeper indentation levels unless line is blank.
525            if (!blankline) {
526              while (state.tlvIndentationStyle.length > depth) {
527                state.tlvIndentationStyle.pop();
528              }
529            }
530          }
531          // Set next level of indentation.
532          state.tlvNextIndent = indented;
533        }
534
535        if (state.tlvCodeActive) {
536          // Highlight as TLV.
537
538          var beginStatement = false;
539          if (tlvTrackStatements) {
540            // This starts a statement if the position is at the scope level
541            // and we're not within a statement leading comment.
542            beginStatement =
543                   (stream.peek() != " ") &&   // not a space
544                   (style === undefined) &&    // not a region identifier
545                   !state.tlvInBlockComment && // not in block comment
546                   //!stream.match(tlvCommentMatch, false) && // not comment start
547                   (stream.column() == state.tlvIndentationStyle.length * tlvIndentUnit);  // at scope level
548            if (beginStatement) {
549              if (state.statementComment) {
550                // statement already started by comment
551                beginStatement = false;
552              }
553              state.statementComment =
554                   stream.match(tlvCommentMatch, false); // comment start
555            }
556          }
557
558          var match;
559          if (style !== undefined) {
560            // Region line.
561            style += " " + tlvScopeStyle(state, 0, "scope-ident")
562          } else if (((stream.pos / tlvIndentUnit) < state.tlvIndentationStyle.length) &&
563                     (match = stream.match(stream.sol() ? tlvFirstLevelIndentMatch : /^   /))) {
564            // Indentation
565            style = // make this style distinct from the previous one to prevent
566                    // codemirror from combining spans
567                    "tlv-indent-" + (((stream.pos % 2) == 0) ? "even" : "odd") +
568                    // and style it
569                    " " + tlvScopeStyle(state, stream.pos - tlvIndentUnit, "indent");
570            // Style the line prefix character.
571            if (match[0].charAt(0) == "!") {
572              style += " tlv-alert-line-prefix";
573            }
574            // Place a class before a scope identifier.
575            if (tlvIdentNext(stream)) {
576              style += " " + tlvScopeStyle(state, stream.pos, "before-scope-ident");
577            }
578          } else if (state.tlvInBlockComment) {
579            // In a block comment.
580            if (stream.match(/^.*?\*\//)) {
581              // Exit block comment.
582              state.tlvInBlockComment = false;
583              if (tlvTrackStatements && !stream.eol()) {
584                // Anything after comment is assumed to be real statement content.
585                state.statementComment = false;
586              }
587            } else {
588              stream.skipToEnd();
589            }
590            style = "comment";
591          } else if ((match = stream.match(tlvCommentMatch)) && !state.tlvInBlockComment) {
592            // Start comment.
593            if (match[0] == "//") {
594              // Line comment.
595              stream.skipToEnd();
596            } else {
597              // Block comment.
598              state.tlvInBlockComment = true;
599            }
600            style = "comment";
601          } else if (match = stream.match(tlvIdentMatch)) {
602            // looks like an identifier (or identifier prefix)
603            var prefix = match[1];
604            var mnemonic = match[2];
605            if (// is identifier prefix
606                tlvIdentifierStyle.hasOwnProperty(prefix) &&
607                // has mnemonic or we're at the end of the line (maybe it hasn't been typed yet)
608                (mnemonic.length > 0 || stream.eol())) {
609              style = tlvIdentifierStyle[prefix];
610              if (stream.column() == state.indented) {
611                // Begin scope.
612                style += " " + tlvScopeStyle(state, stream.column(), "scope-ident")
613              }
614            } else {
615              // Just swallow one character and try again.
616              // This enables subsequent identifier match with preceding symbol character, which
617              //   is legal within a statement.  (Eg, !$reset).  It also enables detection of
618              //   comment start with preceding symbols.
619              stream.backUp(stream.current().length - 1);
620              style = "tlv-default";
621            }
622          } else if (stream.match(/^\t+/)) {
623            // Highlight tabs, which are illegal.
624            style = "tlv-tab";
625          } else if (stream.match(/^[\[\]{}\(\);\:]+/)) {
626            // [:], (), {}, ;.
627            style = "meta";
628          } else if (match = stream.match(/^[mM]4([\+_])?[\w\d_]*/)) {
629            // m4 pre proc
630            style = (match[1] == "+") ? "tlv-m4-plus" : "tlv-m4";
631          } else if (stream.match(/^ +/)){
632            // Skip over spaces.
633            if (stream.eol()) {
634              // Trailing spaces.
635              style = "error";
636            } else {
637              // Non-trailing spaces.
638              style = "tlv-default";
639            }
640          } else if (stream.match(/^[\w\d_]+/)) {
641            // alpha-numeric token.
642            style = "number";
643          } else {
644            // Eat the next char w/ no formatting.
645            stream.next();
646            style = "tlv-default";
647          }
648          if (beginStatement) {
649            style += " tlv-statement";
650          }
651        } else {
652          if (stream.match(/^[mM]4([\w\d_]*)/)) {
653            // m4 pre proc
654            style = "tlv-m4";
655          }
656        }
657        return style;
658      },
659
660      indent: function(state) {
661        return (state.tlvCodeActive == true) ? state.tlvNextIndent : -1;
662      },
663
664      startState: function(state) {
665        state.tlvIndentationStyle = [];  // Styles to use for each level of indentation.
666        state.tlvCodeActive = true;  // True when we're in a TLV region (and at beginning of file).
667        state.tlvNextIndent = -1;    // The number of spaces to autoindent the next line if tlvCodeActive.
668        state.tlvInBlockComment = false;  // True inside /**/ comment.
669        if (tlvTrackStatements) {
670          state.statementComment = false;  // True inside a statement's header comment.
671        }
672      }
673
674    }
675  });
676});