Revert "PEG Parser: under review at http://codereview.chromium.org/8399029"

client/dom/scripts/idlrenderer.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-List sorted(Iterable input, [compare, key]) {
-  comparator(compare, key) {
-    if (compare == null && key == null)
-      return (a, b) => a.compareTo(b);
-    if (compare == null)
-      return (a, b) => key(a).compareTo(key(b));
-    if (key == null)
-      return compare;
-    return (a, b) => compare(key(a), key(b));
-  }
-  List copy = new List.from(input);
-  copy.sort(comparator(compare, key));
-  return copy;
-}
-
-render(idl_node, [indent_str='  ']) {
-  var output = [''];
-  var indent_stack = [];
-
-  //indented(action()) {
-  indented(action) {
-    indent_stack.add(indent_str);
-    action();
-    indent_stack.removeLast();
-  }
-
-  sort(nodes) => sorted(nodes, key: (a) => a.id);
-
-  var w; // For some reason mutually recursive local functions don't work.
-
-  wln([node=null]) {
-    w(node);
-    output.add('\n');
-  }
-
-  w = (node, [list_separator]) {
-    /*
-     Writes the given node.
-
-    Args:
-      node -- a string, IDLNode instance or a list of such.
-      list_separator -- if provided, and node is a list,
-        list_separator will be written between the list items.
-    */
-    if (node == null) {
-      return;
-    } else if (node is String) {
-      if (output.last().endsWith('\n'))
-        output.addAll(indent_stack);
-      output.add(node);
-    } else if (node is List) {
-      var separator = null;
-      for (var element in node) {
-        w(separator);
-        separator = list_separator;
-        w(element);
-      }
-    } else if (node is IDLFile) {
-      w(node.modules);
-      w(node.interfaces);
-    } else if (node is IDLModule) {
-      w(node.annotations);
-      w(node.extAttrs);
-      wln('module ${node.id} {');
-      indented(() {
-          w(node.interfaces);
-          w(node.typedefs);
-        });
-      wln('};');
-    } else if (node is IDLInterface) {
-      w(node.annotations);
-      w(node.extAttrs);
-      w('interface ${node.id}');
-      indented(() {
-          if (!node.parents.isEmpty()) {
-            wln(' :');
-            w(node.parents, ',\n');
-          }
-          wln(' {');
-          section(list, comment) {
-            if (list != null && !list.isEmpty()) {
-              wln();
-              wln(comment);
-              w(sort(list));
-            }
-          }
-          section(node.constants, '/* Constants */');
-          section(node.attributes, '/* Attributes */');
-          section(node.operations, '/* Operations */');
-          section(node.snippets, '/* Snippets */');
-        });
-      wln('};');
-    } else if (node is IDLParentInterface) {
-      w(node.annotations);
-      w(node.type.id);
-    } else if (node is IDLAnnotations) {
-      for (var name in sorted(node.map.getKeys())) {
-        IDLAnnotation annotation = node.map[name];
-        var args = annotation.map;
-        if (args.isEmpty()) {
-          w('@$name');
-        } else {
-          var formattedArgs = [];
-          for (var argName in sorted(args.getKeys())) {
-            var argValue = args[argName];
-            if (argValue == null)
-              formattedArgs.add(argName);
-            else
-              formattedArgs.add('$argName=$argValue');
-          }
-          w('@$name(${Strings.join(formattedArgs,',')})');
-        }
-        w(' ');
-      }
-    } else if (node is IDLExtAttrs) {
-      if(!node.map.isEmpty()) {
-        w('[');
-        var sep = null;
-        for (var name in sorted(node.map.getKeys())) {
-          w(sep);
-          sep = ', ';
-          w(name);
-          var value = node.map[name];
-          if (value != null) {
-            w('=');
-            w(value);
-          }
-        }
-        w('] ');
-      }
-    } else if (node is IDLAttribute) {
-      w(node.annotations);
-      w(node.extAttrs);
-      if (node.isFcGetter)
-        w('getter ');
-      if (node.isFcSetter)
-        w('setter ');
-      wln('attribute ${node.type.id} ${node.id};');
-    } else if (node is IDLConstant) {
-      w(node.annotations);
-      w(node.extAttrs);
-      wln('const ${node.type.id} ${node.id} = ${node.value};');
-    } else if (node is IDLSnippet) {
-      w(node.annotations);
-      wln('snippet {${node.text}};');
-    } else if (node is IDLOperation) {
-      w(node.annotations);
-      w(node.extAttrs);
-      if (node.specials != null && !node.specials.isEmpty()) {
-        w(node.specials, ' ');
-        w(' ');
-      }
-      w('${node.type.id} ${node.id}');
-      w('(');
-      w(node.arguments, ', ');
-      wln(');');
-    } else if (node is IDLArgument) {
-      w(node.extAttrs);
-      w('in ');
-      if (node.isOptional)
-        w('optional ');
-      w('${node.type.id} ${node.id}');
-    } else if (node is IDLExtAttrFunctionValue) {
-      w(node.name);
-      w('(');
-      w(node.arguments, ', ');
-      w(')');
-    } else if (node is IDLTypeDef) {
-      wln('typedef ${node.type.id} ${node.id};');
-    } else {
-      w('// $node\n');
-    }
-  };
-
-  w(idl_node);
-  return Strings.concatAll(output);
-}