split code into several files

TextDocument.js

@@ -0,0 +1,144 @@
+function TextDocument(text) {
+  this.lines = this._split(text);
+}
+
+TextDocument.prototype = 
+{
+  _split : function(text) {
+    return text.split(/[\n\r]/)
+  },
+  
+  getLine : function(row) {
+    return this.lines[row] || "";
+  },
+  
+  keywords : {
+    "break" : 1,
+    "case" : 1,
+    "catch" : 1,
+    "continue" : 1,
+    "default" : 1,
+    "delete" : 1,
+    "do" : 1,
+    "else" : 1,
+    "finally" : 1,
+    "for" : 1,
+    "function" : 1,
+    "if" : 1,
+    "in" : 1,
+    "instanceof" : 1,
+    "new" : 1,
+    "return" : 1,
+    "switch" : 1,
+    "throw" : 1,
+    "try" : 1,
+    "typeof" : 1,
+    "var" : 1,
+    "while" : 1,
+    "with" : 1
+  },
+  
+  getLineTokens : function(row)
+  {
+    var tokens = [];
+    
+    var re = /(?:(\s+)|("[^"]*")|('[^']*')|([\[\]\(\)\{\}])|([a-zA-Z_][a-zA-Z0-9_]*)|(\/\/.*)|(.))/g
+    re.lastIndex = 0;
+
+    var match;
+    var line = this.getLine(row);
+    while (match = re.exec(line))
+    {
+      var token = {
+        type: "text",
+        value: match[0]
+      }
+      
+      if (match[2] || match[3]) {
+        token.type = "string";
+      } else if (match[5] && this.keywords[match[5]]) {
+        token.type = "keyword";
+      } else if (match[6]) {
+        token.type = "comment";
+      }
+      
+      tokens.push(token);
+    };
+    
+    return tokens;
+  },
+  
+  getLength : function() {
+    return this.lines.length;
+  },
+  
+  insert : function(position, text) 
+  {
+    var newLines = this._split(text);
+    
+    if (text == "\n") 
+    {
+      var line = this.lines[position.row] || "";
+      this.lines[position.row] = line.substring(0, position.column);
+      this.lines.splice(position.row+1, 0, line.substring(position.column));
+      
+      return {
+        row: position.row + 1,
+        column: 0
+      };
+    }
+    else if (newLines.length == 1) 
+    {
+      var line = this.lines[position.row] || "";
+      this.lines[position.row] = line.substring(0, position.column) + text + line.substring(position.column);
+      
+      return {
+        row: position.row,
+        column: position.column+text.length
+      }
+    }
+    else
+    {
+      var line = this.lines[position.row] || "";
+      
+      this.lines[position.row] = line.substring(0, position.column) + newLines[0];
+      this.lines[position.row+1] = newLines[newLines.length-1] + line.substring(position.column);
+      
+      if (newLines.length > 2) 
+      {
+        var args = [position.row + 1, 0]
+        args.push.apply(args, newLines.slice(1, -1));
+        this.lines.splice.apply(this.lines, args);
+      }
+      
+      return {
+        row: position.row + newLines.length - 1,
+        column: newLines[newLines.length-1].length
+      };
+    }
+  },
+        
+  remove : function(range)
+  {
+    var firstRow = range.start.row;
+    var lastRow = range.end.row;
+    
+    var row = 
+      this.lines[firstRow].substring(0, range.start.column) +
+      this.lines[lastRow].substring(range.end.column);
+    
+    this.lines.splice(firstRow, lastRow-firstRow+1, row);
+    
+    return range.start;
+  },
+  
+  replace : function(range, text)
+  {
+    this.remove(range);
+    if (text) {
+      return this.insert(range.start, text);
+    } else {
+      return range.start;
+    }
+  }
+}