add date formatter to MessageFormatter, refs globalizejs#563

Author: nkovacs

src/core.js

@@ -86,6 +86,12 @@ Globalize.locale = function( locale ) {
 	return this.cldr;
 };
 
+Globalize._messageFmts = {};
+
+Globalize.addMessageFormatterFunction = function( name, fn ) {
+	Globalize._messageFmts[name] = fn;
+};
+
 /**
  * Optimization to avoid duplicating some internal functions across modules.
  */

src/date.js

@@ -153,6 +153,19 @@ Globalize.prototype.parseDate = function( value, options ) {
 	return this.dateParser( options )( value );
 };
 
+Globalize.addMessageFormatterFunction( "date", function( v, lc, p ) {
+	var options;
+	if ( p ) {
+		options = {
+			date: p
+		};
+	}
+	if ( typeof lc !== "string" ) {
+		lc = lc[0];
+	}
+	return ( new Globalize( lc ) ).formatDate( v, options );
+} );
+
 return Globalize;
 
 });

src/message.js

@@ -87,7 +87,8 @@ Globalize.prototype.messageFormatter = function( path ) {
 		this.pluralGenerator() :
 		createErrorPluralModulePresence;
 
-	formatter = new MessageFormat( cldr.locale, pluralGenerator ).compile( message );
+	formatter = new MessageFormat( cldr.locale, pluralGenerator, Globalize._messageFmts )
+		.compile( message );
 
 	returnFn = messageFormatterFn( formatter );