DevTools: Use CodeMirror modes instead of highlight tokenizers

Source/devtools/front_end/cm/headlesscodemirror.js

+(function(window) {
+  window.CodeMirror = {};
+
+  function splitLines(string){ return string.split(/\r?\n|\r/); };
+
+  function StringStream(string) {
+    this.pos = this.start = 0;
+    this.string = string;
+  }
+  StringStream.prototype = {
+    eol: function() {return this.pos >= this.string.length;},
+    sol: function() {return this.pos == 0;},
+    peek: function() {return this.string.charAt(this.pos) || null;},
+    next: function() {
+      if (this.pos < this.string.length)
+        return this.string.charAt(this.pos++);
+    },
+    eat: function(match) {
+      var ch = this.string.charAt(this.pos);
+      if (typeof match == "string") var ok = ch == match;
+      else var ok = ch && (match.test ? match.test(ch) : match(ch));
+      if (ok) {++this.pos; return ch;}
+    },
+    eatWhile: function(match) {
+      var start = this.pos;
+      while (this.eat(match)){}
+      return this.pos > start;
+    },
+    eatSpace: function() {
+      var start = this.pos;
+      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
+      return this.pos > start;
+    },
+    skipToEnd: function() {this.pos = this.string.length;},
+    skipTo: function(ch) {
+      var found = this.string.indexOf(ch, this.pos);
+      if (found > -1) {this.pos = found; return true;}
+    },
+    backUp: function(n) {this.pos -= n;},
+    column: function() {return this.start;},
+    indentation: function() {return 0;},
+    match: function(pattern, consume, caseInsensitive) {
+      if (typeof pattern == "string") {
+        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
+        var substr = this.string.substr(this.pos, pattern.length);
+        if (cased(substr) == cased(pattern)) {
+          if (consume !== false) this.pos += pattern.length;
+          return true;
+        }
+      } else {
+        var match = this.string.slice(this.pos).match(pattern);
+        if (match && match.index > 0) return null;
+        if (match && consume !== false) this.pos += match[0].length;
+        return match;
+      }
+    },
+    current: function(){return this.string.slice(this.start, this.pos);}
+  };
+  CodeMirror.StringStream = StringStream;
+
+  CodeMirror.startState = function (mode, a1, a2) {
+    return mode.startState ? mode.startState(a1, a2) : true;
+  };
+
+  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
+  CodeMirror.defineMode = function (name, mode) { modes[name] = mode; };
+  CodeMirror.defineMIME = function (mime, spec) { mimeModes[mime] = spec; };
+  CodeMirror.defineMode("null", function() {
+  return {token: function(stream) {stream.skipToEnd();}};
+  });
+  CodeMirror.defineMIME("text/plain", "null");
+  CodeMirror.getMode = function (options, spec) {
+    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
+      spec = mimeModes[spec];
+    if (typeof spec == "string")
+      var mname = spec, config = {};
+    else if (spec != null)
+      var mname = spec.name, config = spec;
+    var mfactory = modes[mname];
+    if (!mfactory) throw new Error("Unknown mode: " + spec);
+    return mfactory(options, config || {});
+  };
+}(this));