nodes: removed o.chainRoot which went unused

lib/nodes.js

@@ -28,9 +28,6 @@
       var closure, code, top;
       this.options = o ? merge(o) : {};
       this.tab = o.indent;
-      if (!(this instanceof AccessorNode || this instanceof IndexNode)) {
-        del(this.options, 'chainRoot');
-      }
       top = this.topSensitive() ? this.options.top : del(this.options, 'top');
       closure = this.isStatement(o) && !this.isPureStatement() && !top && !this.options.asStatement && !(this instanceof CommentNode) && !this.containsPureStatement();
       if (!o.keepLevel) {
@@ -374,7 +371,6 @@
         return ex.compile(o);
       }
       props = this.properties;
-      o.chainRoot || (o.chainRoot = this);
       if (this.parenthetical && !props.length) {
         this.base.parenthetical = true;
       }
@@ -520,7 +516,6 @@
       if (node = this.unfoldSoak(o)) {
         return node.compile(o);
       }
-      o.chainRoot || (o.chainRoot = this);
       if (this.exist) {
         if (val = this.variable) {
           if (!(val instanceof ValueNode)) {
@@ -626,9 +621,8 @@
     AccessorNode.prototype["class"] = 'AccessorNode';
     AccessorNode.prototype.children = ['name'];
     AccessorNode.prototype.compileNode = function(o) {
-      var _base, name, namePart;
+      var name, namePart;
       name = this.name.compile(o);
-      (_base = o.chainRoot).wrapped || (_base.wrapped = this.soakNode);
       namePart = name.match(IS_STRING) ? ("[" + (name) + "]") : ("." + (name));
       return this.prototype + namePart;
     };
@@ -645,8 +639,7 @@
     IndexNode.prototype["class"] = 'IndexNode';
     IndexNode.prototype.children = ['index'];
     IndexNode.prototype.compileNode = function(o) {
-      var _base, idx, prefix;
+      var idx, prefix;
-      (_base = o.chainRoot).wrapped || (_base.wrapped = this.soakNode);
       idx = this.index.compile(o);
       prefix = this.proto ? '.prototype' : '';
       return "" + (prefix) + "[" + (idx) + "]";
@@ -1906,7 +1899,7 @@
   };
   TAB = '  ';
   TRAILING_WHITESPACE = /[ \t]+$/gm;
-  IDENTIFIER = /^[$A-Za-zA-Z_][$\w]*$/;
+  IDENTIFIER = /^[$A-Za-z_][$\w]*$/;
   NUMBER = /^0x[\da-f]+|^(?:\d+(\.\d+)?|\.\d+)(?:e[+-]?\d+)?$/i;
   SIMPLENUM = /^-?\d+$/;
   IS_STRING = /^['"]/;

src/nodes.coffee

@@ -42,7 +42,6 @@ exports.BaseNode = class BaseNode
   compile: (o) ->
     @options = if o then merge o else {}
     @tab     = o.indent
-    del @options, 'chainRoot' unless this instanceof AccessorNode or this instanceof IndexNode
     top     = if @topSensitive() then @options.top else del @options, 'top'
     closure = @isStatement(o) and not @isPureStatement() and not top and
               not @options.asStatement and this not instanceof CommentNode and
@@ -367,7 +366,6 @@ exports.ValueNode = class ValueNode extends BaseNode
   compileNode: (o) ->
     return ex.compile o if ex = @unfoldSoak o
     props = @properties
-    o.chainRoot or= this
     @base.parenthetical = yes if @parenthetical and not props.length
     code = @base.compile o
     if props[0] instanceof AccessorNode and @isNumber() or
@@ -484,7 +482,6 @@ exports.CallNode = class CallNode extends BaseNode
   # Compile a vanilla function call.
   compileNode: (o) ->
     return node.compile o if node = @unfoldSoak o
-    o.chainRoot or= this
     if @exist
       if val = @variable
         val = new ValueNode val unless val instanceof ValueNode
@@ -576,7 +573,6 @@ exports.AccessorNode = class AccessorNode extends BaseNode
 
   compileNode: (o) ->
     name = @name.compile o
-    o.chainRoot.wrapped or= @soakNode
     namePart = if name.match(IS_STRING) then "[#{name}]" else ".#{name}"
     @prototype + namePart
 
@@ -594,7 +590,6 @@ exports.IndexNode = class IndexNode extends BaseNode
     super()
 
   compileNode: (o) ->
-    o.chainRoot.wrapped or= @soakNode
     idx = @index.compile o
     prefix = if @proto then '.prototype' else ''
     "#{prefix}[#{idx}]"
@@ -1676,9 +1671,9 @@ TAB = '  '
 # with Git.
 TRAILING_WHITESPACE = /[ \t]+$/gm
 
-IDENTIFIER = /^[$A-Za-zA-Z_][$\w]*$/
+IDENTIFIER = /^[$A-Za-z_][$\w]*$/
 NUMBER     = /^0x[\da-f]+|^(?:\d+(\.\d+)?|\.\d+)(?:e[+-]?\d+)?$/i
-SIMPLENUM = /^-?\d+$/
+SIMPLENUM  = /^-?\d+$/
 
 # Is a literal value a string?
 IS_STRING = /^['"]/