Add date formatting and parsing code.

lib/i18n/date_symbols.dart

+#library("date_format_for_locale");
+
+/**
+ * This holds onto information about how a particular locale formats dates. It

[Emily Fortuna, 2012/07/31 05:52:53]

this this file generated? If so, please say so in the comments. Same goes for
all the other files.

[Alan Knight, 2012/08/03 23:02:15]

It's not. The generated files do say so.

+ * contains mostly strings, e.g. what the names of months or weekdays are,
+ * but also indicates things like the first day of the week. We expect the data
+ * for instances of these to be generated out of ICU or a similar reference
+ * source. This is used in conjunction with the date_time_patterns, which
+ * defines for a particular locale the different named formats that will
+ * make use of this data.
+ */
+class DateSymbols {
+  final String NAME;
+  final List<String> ERAS,ERANAMES,NARROWMONTHS,STANDALONENARROWMONTHS, MONTHS,
+    STANDALONEMONTHS, SHORTMONTHS,STANDALONESHORTMONTHS,WEEKDAYS,

[Emily Fortuna, 2012/07/31 05:52:53]

indent 2 more spaces here if the line is broken. Also, spacing between the
commas here is irregular. Also, use underscores to separate words
(NARROW_MONTHS)?

[Alan Knight, 2012/08/03 23:02:15]

First two done.
The constant names are from Shanjian's script, and the same across all the
different Google things that he generates for, so I'm reluctant to change them.

+    STANDALONEWEEKDAYS, SHORTWEEKDAYS, STANDALONESHORTWEEKDAYS,
+    NARROWWEEKDAYS,STANDALONENARROWWEEKDAYS,SHORTQUARTERS,
+    QUARTERS, AMPMS,DATEFORMATS,TIMEFORMATS;
+  final Map<String,String> AVAILABLEFORMATS;
+  final int FIRSTDAYOFWEEK;
+  final List<int> WEEKENDRANGE;
+  final int FIRSTWEEKCUTOFFDAY;
+
+  const DateSymbols([this.NAME,
+                       this.ERAS,
+                       this.ERANAMES,
+                       this.NARROWMONTHS,
+                       this.STANDALONENARROWMONTHS,
+                       this.MONTHS,
+                       this.STANDALONEMONTHS,
+                       this.SHORTMONTHS,
+                       this.STANDALONESHORTMONTHS,
+                       this.WEEKDAYS,
+                       this.STANDALONEWEEKDAYS,
+                       this.SHORTWEEKDAYS,
+                       this.STANDALONESHORTWEEKDAYS,
+                       this.NARROWWEEKDAYS,
+                       this.STANDALONENARROWWEEKDAYS,
+                       this.SHORTQUARTERS,
+                       this.QUARTERS,
+                       this.AMPMS,
+                       this.DATEFORMATS,
+                       this.TIMEFORMATS,
+                       this.AVAILABLEFORMATS,
+                       this.FIRSTDAYOFWEEK,
+                       this.WEEKENDRANGE,
+                       this.FIRSTWEEKCUTOFFDAY]
+    );

[Emily Fortuna, 2012/07/31 05:52:53]

move this up to the above line.

[Alan Knight, 2012/08/03 23:02:15]

Done.

+
+  toString() => NAME;
+}
+