feat(i18n): support plural and gender special forms

modules/angular2/src/compiler/directive_normalizer.ts

@@ -23,6 +23,8 @@ import {
   HtmlAttrAst,
   HtmlAst,
   HtmlCommentAst,
+  HtmlExpansionAst,
+  HtmlExpansionCaseAst,
   htmlVisitAll
 } from './html_ast';
 import {HtmlParser} from './html_parser';
@@ -158,4 +160,7 @@ class TemplatePreparseVisitor implements HtmlAstVisitor {
   visitComment(ast: HtmlCommentAst, context: any): any { return null; }
   visitAttr(ast: HtmlAttrAst, context: any): any { return null; }
   visitText(ast: HtmlTextAst, context: any): any { return null; }
+  visitExpansion(ast: HtmlExpansionAst, context: any): any { return null; }
+
+  visitExpansionCase(ast: HtmlExpansionCaseAst, context: any): any { return null; }
 }

modules/angular2/src/compiler/html_ast.ts

@@ -12,6 +12,24 @@ export class HtmlTextAst implements HtmlAst {
   visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitText(this, context); }
 }
 
+export class HtmlExpansionAst implements HtmlAst {
+  constructor(public switchValue: string, public type: string, public cases: HtmlExpansionCaseAst[],
+              public sourceSpan: ParseSourceSpan, public switchValueSourceSpan: ParseSourceSpan) {}
+  visit(visitor: HtmlAstVisitor, context: any): any {
+    return visitor.visitExpansion(this, context);
+  }
+}
+
+export class HtmlExpansionCaseAst implements HtmlAst {
+  constructor(public value: string, public expression: HtmlAst[],
+              public sourceSpan: ParseSourceSpan, public valueSourceSpan: ParseSourceSpan,
+              public expSourceSpan: ParseSourceSpan) {}
+
+  visit(visitor: HtmlAstVisitor, context: any): any {
+    return visitor.visitExpansionCase(this, context);
+  }
+}
+
 export class HtmlAttrAst implements HtmlAst {
   constructor(public name: string, public value: string, public sourceSpan: ParseSourceSpan) {}
   visit(visitor: HtmlAstVisitor, context: any): any { return visitor.visitAttr(this, context); }
@@ -34,6 +52,8 @@ export interface HtmlAstVisitor {
   visitAttr(ast: HtmlAttrAst, context: any): any;
   visitText(ast: HtmlTextAst, context: any): any;
   visitComment(ast: HtmlCommentAst, context: any): any;
+  visitExpansion(ast: HtmlExpansionAst, context: any): any;
+  visitExpansionCase(ast: HtmlExpansionCaseAst, context: any): any;
 }
 
 export function htmlVisitAll(visitor: HtmlAstVisitor, asts: HtmlAst[], context: any = null): any[] {

modules/angular2/src/compiler/legacy_template.ts

@@ -14,6 +14,8 @@ import {
   HtmlElementAst,
   HtmlTextAst,
   HtmlCommentAst,
+  HtmlExpansionAst,
+  HtmlExpansionCaseAst,
   HtmlAst
 } from './html_ast';
 import {HtmlParser, HtmlParseTreeResult} from './html_parser';
@@ -84,6 +86,13 @@ export class LegacyHtmlAstTransformer implements HtmlAstVisitor {
 
   visitText(ast: HtmlTextAst, context: any): HtmlTextAst { return ast; }
 
+  visitExpansion(ast: HtmlExpansionAst, context: any): any {
+    let cases = ast.cases.map(c => c.visit(this, null));
+    return new HtmlExpansionAst(ast.switchValue, ast.type, cases, ast.sourceSpan);
+  }
+
+  visitExpansionCase(ast: HtmlExpansionCaseAst, context: any): any { return ast; }
+
   private _rewriteLongSyntax(ast: HtmlAttrAst): HtmlAttrAst {
     let m = RegExpWrapper.firstMatch(LONG_SYNTAX_REGEXP, ast.name);
     let attrName = ast.name;
@@ -211,9 +220,10 @@ export class LegacyHtmlAstTransformer implements HtmlAstVisitor {
 
 @Injectable()
 export class LegacyHtmlParser extends HtmlParser {
-  parse(sourceContent: string, sourceUrl: string): HtmlParseTreeResult {
+  parse(sourceContent: string, sourceUrl: string,
+        parseExpansionForms: boolean = false): HtmlParseTreeResult {
     let transformer = new LegacyHtmlAstTransformer();
-    let htmlParseTreeResult = super.parse(sourceContent, sourceUrl);
+    let htmlParseTreeResult = super.parse(sourceContent, sourceUrl, parseExpansionForms);
 
     let rootNodes = htmlParseTreeResult.rootNodes.map(node => node.visit(transformer, null));
 

modules/angular2/src/compiler/template_parser.ts

@@ -64,6 +64,8 @@ import {
   HtmlAttrAst,
   HtmlTextAst,
   HtmlCommentAst,
+  HtmlExpansionAst,
+  HtmlExpansionCaseAst,
   htmlVisitAll
 } from './html_ast';
 
@@ -268,7 +270,7 @@ class TemplateParseVisitor implements HtmlAstVisitor {
 
   visitComment(ast: HtmlCommentAst, context: any): any { return null; }
 
-  visitElement(element: HtmlElementAst, parent: ElementContext): any {
+  visitElement(element: HtmlElementAst, component: ElementContext): any {
     var nodeName = element.name;
     var preparsedElement = preparseElement(element);
     if (preparsedElement.type === PreparsedElementType.SCRIPT ||
@@ -770,6 +772,9 @@ class NonBindableVisitor implements HtmlAstVisitor {
     var ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR);
     return new TextAst(ast.value, ngContentIndex, ast.sourceSpan);
   }
+  visitExpansion(ast: HtmlExpansionAst, context: any): any { return ast; }
+
+  visitExpansionCase(ast: HtmlExpansionCaseAst, context: any): any { return ast; }
 }
 
 class BoundElementOrDirectiveProperty {