chore(dart/transform): Integrate protoc into gulp build

This change detects if the user has `protoc` available and, if so, uses it to generate `.pb.dart` files. If not, pre-built files are used instead.

Author: Tim Blasi

gulpfile.js

@@ -21,6 +21,7 @@ var licenseWrap = require('./tools/build/licensewrap');
 var watch = require('./tools/build/watch');
 
 var pubget = require('./tools/build/pubget');
+var proto = require('./tools/build/proto');
 var linknodemodules = require('./tools/build/linknodemodules');
 var pubbuild = require('./tools/build/pubbuild');
 var dartanalyzer = require('./tools/build/dartanalyzer');
@@ -830,7 +831,7 @@ gulp.task('build/pure-packages.dart', function() {
  var transformStream = gulp
  .src([
  'modules_dart/transform/**/*',
- '!modules_dart/transform/pubspec.yaml'
+ '!modules_dart/transform/**/*.proto'
  ])
  .pipe(gulp.dest(path.join(CONFIG.dest.dart, 'angular2')));
 
@@ -882,6 +883,7 @@ gulp.task('build/pure-packages.dart', function() {
 // Builds all Dart packages, but does not compile them
 gulp.task('build/packages.dart', function(done) {
  runSequence(
+ 'lint_protos.dart',
  'build/tree.dart',
  'build/pure-packages.dart',
  // Run after 'build/tree.dart' because broccoli clears the dist/dart folder
@@ -1206,9 +1208,21 @@ gulp.task('clean', ['build/clean.tools', 'build/clean.js', 'build/clean.dart', '
 gulp.task('build', ['build.js', 'build.dart']);
 
 // ------------
-// change detection codegen
+// transform codegen
+gulp.task('lint_protos.dart', function(done) {
+ return proto.lint({
+ dir: 'modules_dart/transform/lib/src/transform/common/model/'
+ }, done);
+});
 
+gulp.task('gen_protos.dart', function(done) {
+ return proto.generate({
+ dir: 'modules_dart/transform/lib/src/transform/common/model/',
+ plugin: 'tools/build/protoc-gen-dart'
+ }, done);
+});
 
+// change detection codegen
 gulp.task('build.change_detect.dart', function(done) {
  return runSequence('build/packages.dart', '!build/pubget.angular2.dart',
  '!build/change_detect.dart', done);

modules/angular2/pubspec.yaml

@@ -18,6 +18,7 @@ dependencies:
  intl: '^0.12.4'
  logging: '>=0.9.0 <0.12.0'
  observe: '^0.13.1'
+ protobuf: '^0.4.2'
  quiver: '^0.21.4'
  source_span: '^1.0.0'
  stack_trace: '^1.1.1'

modules_dart/transform/lib/src/transform/common/model/annotation_model.pb.dart

@@ -0,0 +1,35 @@
+syntax = "proto2";
+
+package angular2.src.transform.common.model.proto;
+
+message NamedParameter {
+ required string name = 1;
+ required string value = 2;
+}
+
+message AnnotationModel {
+ // The constructor that creates the annotation, or the name of the field that
+ // defines the annotation.
+ required string name = 1;
+
+ // The positional parameters provided to the annotation.
+ repeated string parameters = 2;
+
+ // The named parameters provided to the annotation.
+ repeated NamedParameter named_parameters = 3;
+
+ // Whether this is a `View` annotation.
+ optional bool is_view = 4;
+
+ // Whether this is a `Directive` annotation. This takes inheritance into
+ // account, that is, this should be true if `is_component` is true.
+ optional bool is_directive = 5;
+
+ // Whether htis is a `Component` annotation.
+ optional bool is_component = 6;
+
+ // Whether this is an `Injectable` annotation. This takes inheritance into
+ // account, that is, this should be true if `is_directive` and/or
+ // `is_component` is true.
+ optional bool is_injectable = 7;
+}

modules_dart/transform/lib/src/transform/common/model/annotation_model.proto

@@ -0,0 +1,28 @@
+syntax = "proto2";
+
+package angular2.src.transform.common.model.proto;
+
+// Note that the fields that are common between `ImportModel` and `ExportModel`
+// are stored at the same indexes, which allows them to be semi-wire-compatible
+// with one another. This will hopefully not be necessary to exploit, but on the
+// chance that it is it's easier to define this now.
+message ImportModel {
+ required string uri = 1;
+
+ repeated string show_combinators = 2;
+
+ repeated string hide_combinators = 3;
+
+ optional string prefix = 4;
+
+ optional bool is_deferred = 5;
+}
+
+// See message above about wire-compatiblity with `ImportModel`.
+message ExportModel {
+ required string uri = 1;
+
+ repeated string show_combinators = 2;
+
+ repeated string hide_combinators = 3;
+}