now all dependancies are simplified and should allow to text-plot the…

… structure of the parsed tree

lib/Group.js

@@ -19,4 +19,6 @@ Group.prototype.explain = function explain ( shift ) {
   content.push(shift + '->Group(' + this.isCapturing + ')');
   content.push(this.regex.explain(shift + '  ');
   content.push(shift + '<-Group');
+
+  return content.join('\n');
 }

lib/Position.js

@@ -1,25 +1,17 @@
 /**
  * Copyright (c) 2012 Vladimir's Software. All rights reserved.
  *
- * @fileoverview Position of an element in regular expression
+ * @fileoverview Position zero-width element
  * @author vladimir.darmin@gmail.com
  *
  * @created Fri, Oct 12 2012 - 17:45:54 -0700
  * @updated Fri, Oct 12 2012 - 17:45:54 -0700
  */
 
-var Stream = require('./Stream');
-
-var Position = module.exports = function Position ( stream ) {
-  var regex = /\^|\$|\\b|\\B/;
-
-  if ( !(this instanceof Position) ) {
-    var match = stream.check(regex);
-
-    return match instanceof Error ? match : new Position(match);
-  }
-
-  var match = stream instanceof Stream ? stream.match(regex) : stream;
+var Position = module.exports = function Position ( value ) {
+  this.value = value
+}
 
-  this.value = match[0].slice(-1);
+Position.prototype.explain = function explain ( shift ) {
+  return shift + 'Position(' + this.value + ')';
 }

lib/Quantifier.js

@@ -8,26 +8,11 @@
  * @updated Fri, Oct 12 2012 - 23:36:02 -0700
  */
 
-var Stream = require('./Stream');
-
-var Quantifier = module.exports = function Quantifier ( stream ) {
-  var regex = /(\?)|(\*)|(\+)|{(\d+)(?:,(\d+)?)}/;
-
-  if ( !(this instanceof Quantifier) ) {
-    var match = stream.check(regex);
-
-    return match instanceof Error ? match : new Quantifier(match);
-  }
-
-  var match = stream instanceof Stream ? stream.match(regex) : stream;
-
-  if ( match[1] ) this.from = 0;
-  else if ( match[2] ) this.from = 0;
-  else if ( match[3] ) this.from = 1;
-  else this.from = +match[4];
+var Quantifier = module.exports = function Quantifier ( from, to ) {
+  this.from = from;
+  this.to = to;
+}
 
-  if ( match[1] this.to = 1;
-  else if ( match[2] ) this.to = Infinity;
-  else if ( match[3] ) this.to = Infinity;
-  else this.to = +(match[5] || Infinity);
+Quantifier.prototype.explain = function explain ( shift ) {
+  return shift + 'Quantifier(' + this.from + ', ' + this.to + ')';
 }

lib/Range.js

@@ -164,5 +164,5 @@ Range.prototype.toString = function toString ( ) {
 }
 
 Range.prototype.explain = function explain ( shift ) {
-  return shift + String(this);
+  return shift + 'Range(' + String(this) + ')';
 }

lib/Reference.js

@@ -8,18 +8,10 @@
  * @updated Sat, Oct 13 2012 - 23:35:50 -0700
  */
 
-var Stream = require('./Stream');
-
-var Reference = module.exports = function Reference ( Stream ) {
-  var regex = /\\\(d+)/;
-
-  if ( !(this instanceof Reference) ) {
-    var match = stream.check(regex);
-
-    return match instanceof Error ? match : new Reference(match);
-  }
-
-  var match = stream instanceof Stream ? stream.match(regex) : stream;
+var Reference = module.exports = function Reference ( number ) {
+  this.number = number;
+}
 
-  this.value = match[1];
+Reference.prototype.explain = function explain ( shift ) {
+  return shift + 'Reference(' + this.number + ')';
 }