refactor(compiler): factorize common util code dash <-> camel

Closes angular#1114
Fixes angular#1097

Author: marclaval

modules/angular2/src/core/compiler/pipeline/compile_element.js

@@ -6,7 +6,7 @@ import {Decorator, Component, Viewport, DynamicComponent} from '../../annotation
 import {ElementBinder} from '../element_binder';
 import {ProtoElementInjector} from '../element_injector';
 import * as viewModule from '../view';
-import {dashCaseToCamelCase} from './util';
+import {dashCaseToCamelCase} from '../string_utils';
 
 import {AST} from 'angular2/change_detection';
 

modules/angular2/src/core/compiler/pipeline/element_binder_builder.js

@@ -10,7 +10,7 @@ import {DirectiveMetadata} from '../directive_metadata';
 import {CompileStep} from './compile_step';
 import {CompileElement} from './compile_element';
 import {CompileControl} from './compile_control';
-import {dashCaseToCamelCase} from './util';
+import {dashCaseToCamelCase} from '../string_utils';
 import {setterFactory} from '../property_setter_factory'
 
 /**

modules/angular2/src/core/compiler/property_setter_factory.js

@@ -1,23 +1,9 @@
 import {StringWrapper, RegExpWrapper, BaseException, isPresent, isBlank, isString, stringify} from 'angular2/src/facade/lang';
 import {ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
 import {DOM} from 'angular2/src/dom/dom_adapter';
+import {camelCaseToDashCase, dashCaseToCamelCase} from './string_utils';
 import {reflector} from 'angular2/src/reflection/reflection';
 
-var DASH_CASE_REGEXP = RegExpWrapper.create('-([a-z])');
-var CAMEL_CASE_REGEXP = RegExpWrapper.create('([A-Z])');
-
-export function dashCaseToCamelCase(input:string): string {
-  return StringWrapper.replaceAllMapped(input, DASH_CASE_REGEXP, (m) => {
-    return m[1].toUpperCase();
-  });
-}
-
-export function camelCaseToDashCase(input:string): string {
-  return StringWrapper.replaceAllMapped(input, CAMEL_CASE_REGEXP, (m) => {
-    return '-' + m[1].toLowerCase();
-  });
-}
-
 const STYLE_SEPARATOR = '.';
 var propertySettersCache = StringMapWrapper.create();
 var innerHTMLSetterCache;

modules/angular2/src/core/compiler/pipeline/util.js renamed to modules/angular2/src/core/compiler/string_utils.js

@@ -3,13 +3,13 @@ import {StringWrapper, RegExpWrapper} from 'angular2/src/facade/lang';
 var DASH_CASE_REGEXP = RegExpWrapper.create('-([a-z])');
 var CAMEL_CASE_REGEXP = RegExpWrapper.create('([A-Z])');
 
-export function dashCaseToCamelCase(input:string) {
+export function dashCaseToCamelCase(input:string): string {
   return StringWrapper.replaceAllMapped(input, DASH_CASE_REGEXP, (m) => {
     return m[1].toUpperCase();
   });
 }
 
-export function camelCaseToDashCase(input:string) {
+export function camelCaseToDashCase(input:string): string {
   return StringWrapper.replaceAllMapped(input, CAMEL_CASE_REGEXP, (m) => {
     return '-' + m[1].toLowerCase();
   });