First iteration on number formatting

pkg/i18n/number_symbols.dart

Index: pkg/i18n/number_symbols.dart
===================================================================
--- pkg/i18n/number_symbols.dart	(revision 0)
+++ pkg/i18n/number_symbols.dart	(revision 0)
@@ -0,0 +1,37 @@
+// Copyright (c) 2012, 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.
+#library("number_symbols");
+
+/**
+ * This holds onto information about how a particular locale formats numbers. It
+ * contains strings for things like the decimal separator, digit to use for "0"
+ * and infinity. We expect the data for instances to be generated out of ICU
+ * or a similar reference source.
+ */
+
+class NumberSymbols {
+  final String NAME;
+  final String DECIMAL_SEP, GROUP_SEP, PERCENT, ZERO_DIGIT, PLUS_SIGN,
+      MINUS_SIGN, EXP_SYMBOL, PERMILL, INFINITY, NAN, DECIMAL_PATTERN,
+      SCIENTIFIC_PATTERN, PERCENT_PATTERN, CURRENCY_PATTERN, DEF_CURRENCY_CODE;
+
+  const NumberSymbols([this.NAME,
+                       this.DECIMAL_SEP,
+                       this.GROUP_SEP,
+                       this.PERCENT,
+                       this.ZERO_DIGIT,
+                       this.PLUS_SIGN,
+                       this.MINUS_SIGN,
+                       this.EXP_SYMBOL,
+                       this.PERMILL,
+                       this.INFINITY,
+                       this.NAN,
+                       this.DECIMAL_PATTERN,
+                       this.SCIENTIFIC_PATTERN,
+                       this.PERCENT_PATTERN,
+                       this.CURRENCY_PATTERN,
+                       this.DEF_CURRENCY_CODE]);
+
+  toString() => NAME;
+}