chore(build): execute pub get only if a pubspec.yaml changed and run dart analyzer on all dart files

`pub get` is now only executed when the `pubspec.yaml` in the `modules`
folder is different than the `pubspec.yaml` in the `build/dart` folder.

Generates the file `build/dart/_analyzer.dart` that imports all modules
to run `dart analyzer` against all of them. The build will fail whenever
there are errors, warnings or hints in `dart analyzer`.

Changes the sources so that `dart analyzer` does not report any
error, warning or hint.

Closes #40

modules/change_detection/pubspec.yaml

@@ -2,8 +2,9 @@ name: change_detection
 environment:
   sdk: '>=1.4.0'
 dependencies:
+  facade:
+    path: ../facade
 dev_dependencies:
   test_lib:
     path: ../test_lib
-  facade:
-    path: ../facade
+  guinness: ">=0.1.5 <0.2.0"

modules/change_detection/src/parser/scanner.js

@@ -368,7 +368,7 @@ export class Scanner {
   }
 
   error(message:string) {
-    var position:int = this.index + this.offset;
+    var position:int = this.index;
     throw `Lexer Error: ${message} at column ${position} in expression [${input}]`;
   }
 }

modules/change_detection/src/record.js

@@ -25,12 +25,14 @@ export class ProtoRecord {
     this.prev = null;
     this.changeNotifier = null;
     this._clone = null;
-  }
+    this.changeContext = null;
+    this.dispatcherContext = null;
+ }
 
   instantiate(watchGroup/*:wg.WatchGroup*/):Record {
     var record = this._clone = new Record(watchGroup, this);
     record.prev = this.prev._clone;
-    record._checkPrev = this._prev._clone;
+    record._checkPrev = this.prev._clone;
     return _clone;
   }
 

modules/change_detection/test/change_detection_spec.js

@@ -1,13 +1,11 @@
-import {describe, it, expect} from 'test_lib/test_lib';
-import {ProtoWatchGroup, WatchGroup, WatchGroupDispatcher} from 'change_detection/change_detection';
-import {DOM} from 'facade/dom';
+import {describe, it, xit, expect} from 'test_lib/test_lib';
+import {ProtoWatchGroup, WatchGroup, WatchGroupDispatcher, ChangeDetection} from 'change_detection/change_detection';
 
 
 export function main() {
   describe('change_detection', function() {
     describe('ChangeDetection', function() {
-      it('should do simple watching', function() {
-        return; // remove me once xit or CD works.
+      xit('should do simple watching', function() {
         var person = new Person('misko', 38);
         var pwg = new ProtoWatchGroup();
         pwg.watch('name', 'nameToken');
@@ -32,11 +30,16 @@ export function main() {
 
 class Person {
   constructor(name:string, age:number) {
-    this.name = null;
-    this.a
+    this.name = name;
+    this.age = age;
   }
 }
 
-class Dispatcher extends WatchGroupDispatcher {
+class LoggingDispatcher extends WatchGroupDispatcher {
+  constructor() {
+    this.log = null;
+  }
+  clear() {
 
+  }
 }

modules/change_detection/test/parser/lexer_spec.js

@@ -1,6 +1,5 @@
 import {describe, it, expect} from 'test_lib/test_lib';
 import {Scanner, Token} from 'change_detection/parser/scanner';
-import {DOM} from 'facade/dom';
 import {List, ListWrapper} from "facade/collection";
 import {StringWrapper} from "facade/lang";
 

modules/core/pubspec.yaml

@@ -11,3 +11,4 @@ dependencies:
 dev_dependencies:
   test_lib:
     path: ../test_lib
+  guinness: ">=0.1.5 <0.2.0"

modules/core/src/annotations/directive.js

@@ -1,19 +1,19 @@
-import {Type} from 'facade/lang';
-import {ElementServicesFunction} from './facade';
+// import {Type} from 'facade/lang';
+// import {ElementServicesFunction} from './facade';
 import {ABSTRACT} from 'facade/lang';
 
 
-@ABSTRACT
+@ABSTRACT()
 export class Directive {
 	constructor({
       selector,
       lightDomServices,
       implementsTypes
-    }:{
+    }/*:{
       selector:String,
       lightDomServices:ElementServicesFunction,
       implementsTypes:Array<Type>
-    })
+    }*/)
   {
     this.lightDomServices = lightDomServices;
 		this.selector = selector;

modules/core/src/annotations/facade.dart

@@ -1,3 +1,5 @@
+library core.annotations.facade;
+
 import 'package:di/di.dart' show Module;
 import '../compiler/element_module.dart' show ElementModule;
 

modules/core/src/annotations/template_config.js

@@ -1,4 +1,4 @@
-import {Type, List} from 'facade/lang';
+// import {Type, List} from 'facade/lang';
 
 export class TemplateConfig {
   constructor({
@@ -6,11 +6,11 @@ export class TemplateConfig {
       directives,
       formatters,
       source
-    }: {
+    }/*: {
       url: String,
       directives: List<Type>,
       formatters: List<Type>,
       source: List<TemplateConfig>
-    })
+    }*/)
   {}
 }

modules/core/src/compiler/compiler.js

@@ -1,6 +1,6 @@
 import {Future, Type} from 'facade/lang';
 import {Element} from 'facade/dom';
-import {ProtoView} from './view';
+//import {ProtoView} from './view';
 import {TemplateLoader} from './template_loader';
 import {FIELD} from 'facade/lang';
 
@@ -19,7 +19,7 @@ export class Compiler {
    *   - don't know about injector in deserialization
    *   - compile does not need the injector, only the ViewFactory does
    */
-  compile(component:Type, element:Element/* = null*/):Future<ProtoView> {
+  compile(component:Type, element:Element/* = null*/):Future/*<ProtoView>*/ {
     return null;
   }
 

modules/core/src/compiler/template_loader.js

@@ -1,11 +1,11 @@
 import {Future} from 'facade/lang';
-import {Document} from 'facade/dom';
+//import {Document} from 'facade/dom';
 
 export class TemplateLoader {
 
   constructor() {}
 
-  load(url:String):Future<Document> {
+  load(url:String):Future/*<Document>*/ {
     return null;
   }
 }

modules/core/src/life_cycle/life_cycle.js

@@ -4,7 +4,10 @@ export class LifeCycle {
 
   @FIELD('final _changeDetection:ChangeDetection')
   @FIELD('final _onChangeDispatcher:OnChangeDispatcher')
-  constructor() {}
+  constructor() {
+    this._changeDetection = null;
+    this._onChangeDispatcher = null;
+  }
 
   digest() {
     _changeDetection.detectChanges();

modules/core/test/compiler/compiler_spec.js

@@ -1,5 +1,5 @@
-import {describe, it, expect} from 'test_lib/test_lib';
-import {Compiler} from 'core/compiler/compiler';
+import {describe, it} from 'test_lib/test_lib';
+//import {Compiler} from 'core/compiler/compiler';
 
 export function main() {
   describe('compiler', function() {

modules/di/pubspec.yaml

@@ -7,3 +7,4 @@ dependencies:
 dev_dependencies:
   test_lib:
     path: ../test_lib
+  guinness: ">=0.1.5 <0.2.0"

modules/examples/pubspec.yaml

@@ -2,6 +2,9 @@ name: examples
 environment:
   sdk: '>=1.4.0'
 dependencies:
+  facade:
+    path: ../facade
 dev_dependencies:
   test_lib:
     path: ../test_lib
+  guinness: ">=0.1.5 <0.2.0"

modules/facade/pubspec.yaml

@@ -5,3 +5,4 @@ dependencies:
 dev_dependencies:
   test_lib:
     path: ../test_lib
+  guinness: ">=0.1.5 <0.2.0"

modules/facade/src/dom.dart

@@ -6,7 +6,7 @@ export 'dart:html' show DocumentFragment, Node, Element, TemplateElement, Text;
 
 class DOM {
   static query(selector) {
-    return document.query(selector);
+    return document.querySelector(selector);
   }
   static on(element, event, callback) {
     element.addEventListener(event, callback);

modules/facade/src/lang.dart

@@ -4,12 +4,20 @@ export 'dart:async' show Future;
 export 'dart:core' show Type, int;
 
 class FIELD {
-  const constructor(this.definition);
+  final String definition;
+  const FIELD(this.definition);
 }
 
-class CONST {}
-class ABSTRACT {}
-class IMPLEMENTS {}
+class CONST {
+  const CONST();
+}
+class ABSTRACT {
+  const ABSTRACT();
+}
+class IMPLEMENTS {
+  final interfaceClass;
+  const IMPLEMENTS(this.interfaceClass);
+}
 
 
 class StringWrapper {

modules/test_lib/src/test_lib.dart

@@ -1,3 +1,4 @@
+library test_lib.test_lib;
 export 'package:guinness/guinness.dart' show
     describe, ddescribe, xdescribe,
     it, xit, iit,