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refactor: simplify and make tests work in JS and Dart

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* remove `wraps` syntax enhancements for imports
  and support new `import * as module from ...` syntax

  - default imports are the wrong construct for importing
    everything from a module

* moved tests from transpiler to jasmine and karma

  - transpiler tests are included when running karma in main project folder
  - transpiler is reloaded after every test run in karma,
    so no need to restart karma when the transpiler has been changed.
  - removed own gulp build for transpiler and `postinstall.sh`
    as they are no more needed.
  - transpiler tests are now executed in Dart AND JavaScript (used to be executed
    only in Dart), which allowed to catch some bugs (see the bug with the
    import specification above).

* made tests work in dart as well by using the following hack:

  - dependencies are loaded from the `build` folder, which makes
    running `gulp build` necessary before running karma for dart
  - for this to work,
    the dependencies are included in main `pubspec.yaml` of project
  - reason for the hack: `karma-dart` loads all `packages` urls
    directly from disc (should rather use the karma file list)

* added explicit annotations `FIELD`, `ABSTRACT`, ... to `facade/lang.*`

  - needed for now that we can run tests and don't get errors for undefined
    annotations.

* added `README.md` with details about the build and tests
This commit is contained in:
Tobias Bosch
2014-09-28 13:55:01 -07:00
parent 817c005845
commit c79f0c3472
47 changed files with 338 additions and 508 deletions
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202
tools/transpiler/LICENSE
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@ -1,202 +0,0 @@
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18
tools/transpiler/gulpfile.js
View File

@ -1,18 +0,0 @@
var gulp = require('gulp');
var tasks = require('./gulp-tasks');
var runSequence = require('run-sequence');
var watch = require('gulp-watch');
var mergeStreams = require('event-stream').merge;
tasks.install(gulp);
gulp.task('test', function() {
return runSequence('transpiler/test');
});
gulp.task('clean', ['transpiler/clean']);
gulp.task('watch', function(done) {
// parallel is important as both streams are infinite!
runSequence(['transpiler/test/watch', 'transpiler/src/watch'], done);
});

3
tools/transpiler/index.js
View File

@ -16,8 +16,7 @@ var SELF_COMPILE_OPTIONS = {
var needsReload = true;
// TODO(vojta): call this if sources changed
exports.sourcesChanged = function() {
exports.reloadSources = function() {
needsReload = true;
};

14
tools/transpiler/karma-traceur-preprocessor.js
View File

@ -4,11 +4,17 @@ module.exports = {
'preprocessor:traceur': ['factory', createJs2DartPreprocessor]
};
function createJs2DartPreprocessor(logger, basePath, config) {
function createJs2DartPreprocessor(logger, basePath, config, emitter) {
var log = logger.create('traceur');
// Reload the transpiler sources so we don't need to
// restart karma when we made changes to traceur.
// As there is no event that is called before any preprocessor runs,
// we listen for the end event in karma to reload the
// transpiler sources.
emitter.on('run_complete', function(filesPromise) {
transpiler.reloadSources();
});
return function(content, file, done) {
try {
var moduleName = config.resolveModuleName(file.originalPath);
if (config.transformPath) {
@ -34,4 +40,4 @@ function createJs2DartPreprocessor(logger, basePath, config) {
};
}
createJs2DartPreprocessor.$inject = ['logger', 'config.basePath', 'config.traceurPreprocessor'];
createJs2DartPreprocessor.$inject = ['logger', 'config.basePath', 'config.traceurPreprocessor', 'emitter'];

26
tools/transpiler/package.json
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@ -1,26 +0,0 @@
{
"name": "transpiler",
"version": "0.0.0",
"description": "Compile JavaScript to Dart so that you can compile it back to JavaScript and run.",
"main": "index.js",
"scripts": {
"test": "gulp transpiler/test",
"postinstall": "pub install"
},
"author": "Vojta Jina <vojta.jina@gmail.com>",
"license": "MIT",
"devDependencies": {
"gulp": "^3.8.8",
"gulp-rename": "^1.2.0",
"gulp-shell": "^0.2.9",
"gulp-watch": "^1.0.3",
"q": "^1.0.1",
"through2": "^0.6.1",
"event-stream": "^3.1.5",
"gulp-rimraf": "^0.1.0",
"run-sequence": "^0.3.6",
"glob": "^4.0.6",
"gulp-ejs": "^0.3.1",
"traceur": "^0.0.66"
}
}

10
tools/transpiler/pubspec.yaml
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@ -1,10 +0,0 @@
name: transpiler
version: 0.0.0
authors:
- Vojta Jina <vojta.jina@gmail.com>
description: Compile JavaScript to Dart so that you can compile it back to JavaScript and run.
environment:
sdk: '>=1.4.0'
dependencies:
dev_dependencies:
unittest: '>=0.10.1 <0.12.0'

7
tools/transpiler/run_specs.dart
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@ -1,7 +0,0 @@
// Note: need this file here so that we can use the packages
// in the main folder...
import './build/spec/runner.dart' as runner;
void main() {
runner.main();
}

17
tools/transpiler/spec/annotations_spec.js
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@ -1,19 +1,26 @@
import annotations from './fixtures/annotations';
import {describe, it, expect} from 'test_lib/test_lib';
import {Provide, readFirstAnnotation} from './fixtures/annotations';
class Inject {}
class Bar {}
@annotations.Provide('Foo')
@Provide('Foo')
class Foo {
@Inject
constructor() {}
}
@annotations.Provide(Foo)
@Provide(Foo)
function baz() {}
function annotatedParams(@Inject(Foo) f, @Inject(Bar) b) {}
function main() {
annotations.main();
export function main() {
describe('annotations', function() {
it('should work', function() {
// Assert `Foo` class has `Provide` annotation.
var clazz = readFirstAnnotation(Foo);
expect(clazz instanceof Provide).toBe(true);
});
});
}

16
tools/transpiler/spec/classes_spec.js
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@ -1,3 +1,5 @@
import {describe, it, expect} from 'test_lib/test_lib';
// Constructor
// Define fields
class Foo {
@ -11,10 +13,14 @@ class Foo {
}
}
function main() {
var foo = new Foo(2, 3);
export function main() {
describe('classes', function() {
it('should work', function() {
var foo = new Foo(2, 3);
assert(foo.a == 2);
assert(foo.b == 3);
assert(foo.sum() == 5);
expect(foo.a).toBe(2);
expect(foo.b).toBe(3);
expect(foo.sum()).toBe(5);
});
});
}

18
tools/transpiler/spec/equals_spec.js
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@ -1,3 +1,5 @@
import {describe, it, expect} from 'test_lib/test_lib';
function same(a, b) {
return a === b;
}
@ -7,10 +9,14 @@ function notSame(a, b) {
return a !== b;
}
function main() {
var obj = {};
assert(same({}, {}) == false);
assert(same(obj, obj) == true);
assert(notSame({}, {}) == true);
assert(notSame(obj, obj) == false);
export function main() {
describe('equals', function() {
it('should work', function() {
var obj = {};
expect(same({}, {}) == false).toBe(true);
expect(same(obj, obj) == true).toBe(true);
expect(notSame({}, {}) == true).toBe(true);
expect(notSame(obj, obj) == false).toBe(true);
});
});
}

20
tools/transpiler/spec/fixtures/annotations.dart vendored
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@ -1,26 +1,18 @@
// This file is not generated,
import 'dart:mirrors';
// This class is not generated,
// but should be in the future.
//
// Problems:
// - Dart requires annotations to be const (which makes sense).
// Right now, I can't describe that in ES6.
// - operator mapping `is`/`instanceof` is not yet implemented
import 'dart:mirrors';
import '../annotations_spec.dart';
class Provide {
final token;
const Provide(this.token);
}
readAnnotation(clazz) {
// TODO: this api does not yet return an array as we don't have
// a nice array wrapper for Dart
readFirstAnnotation(clazz) {
return reflectClass(clazz).metadata.first.reflectee;
}
main() {
// Assert `Foo` class has `Provide` annotation.
// TODO(vojta): test this more.
var clazz = readAnnotation(Foo);
assert(clazz is Provide);
}

18
tools/transpiler/spec/fixtures/annotations.es6 vendored Normal file
View File

@ -0,0 +1,18 @@
// This class is not generated,
// but should be in the future.
//
// Problems:
// - Dart requires annotations to be const (which makes sense).
// Right now, I can't describe that in ES6.
export class Provide {
constructor(token) {
this.token = token;
}
}
// TODO: this api does not yet return an array as we don't have
// a nice array wrapper for Dart
export function readFirstAnnotation(clazz) {
return clazz.annotations[0];
}

3
tools/transpiler/spec/fixtures/facade.es6 vendored Normal file
View File

@ -0,0 +1,3 @@
export class MapWrapper {
}

10
tools/transpiler/spec/functions_spec.js
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@ -1,7 +1,13 @@
import {describe, it, expect} from 'test_lib/test_lib';
function sum(a, b) {
return a + b;
}
function main() {
assert(sum(1, 2) == 3);
export function main() {
describe('functions', function() {
it('should work', function() {
expect(sum(1, 2)).toBe(3);
});
});
}

34
tools/transpiler/spec/imports_spec.js
View File

@ -1,22 +1,28 @@
import {describe, it, expect} from 'test_lib/test_lib';
import {Foo, Bar} from './foo';
// TODO: Does not work, as dart does not support renaming imports
// import {Foo as F} from './fixtures/foo';
import fooModule from './foo';
import * as fooModule from './foo';
import {MapWrapper wraps Map} from './fixtures/facade';
import * as exportModule from './export';
import exportModule from './export';
import {Type} from 'facade/lang';
import unittest from 'unittest/unittest';
export function main() {
describe('imports', function() {
it('should work', function() {
expect(Foo).toBe('FOO');
expect(Bar).toBe('BAR');
// TODO: Does not work
// assert(F == 'FOO');
expect(fooModule.Foo).toBe('FOO');
expect(fooModule.Bar).toBe('BAR');
function main() {
assert(Foo == 'FOO');
assert(Bar == 'BAR');
// assert(F == 'FOO');
assert(fooModule.Foo == 'FOO');
assert(fooModule.Bar == 'BAR');
expect(exportModule.Foo).toBe('FOO');
expect(exportModule.Bar).toBe('BAR');
assert(exportModule.Foo == 'FOO');
assert(exportModule.Bar == 'BAR');
assert(unittest.PASS != null);
expect(Type).toBeTruthy();
});
});
}

13
tools/transpiler/spec/runner.dart.template
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@ -1,13 +0,0 @@
import 'package:unittest/unittest.dart';
<% files.forEach(function(file, index) { %>
import '<%= file %>' as spec<%=index%>;
<% }); %>
void main() {
<% files.forEach(function(file, index) { %>
test('<%= file %>', () {
spec<%= index %>.main();
});
<% }); %>
}

27
tools/transpiler/spec/types_spec.js
View File

@ -1,3 +1,8 @@
import {describe, it, expect} from 'test_lib/test_lib';
class A {}
class B {}
function sum(a: number, b: number): number {
return a + b;
}
@ -6,7 +11,7 @@ function not(a: boolean): boolean {
return !a;
}
function generics(a: A<Test>) {
function generics(a: A<B>) {
}
@ -37,17 +42,21 @@ class Foo {
typedVariables() {
// TODO(vojta): test this
var foo:string = 'foo';
var typed:bool, untyped;
var typed:boolean, untyped;
var oneTyped:string = 'one',
another: bool = true;
another: boolean = true;
}
}
function main() {
// TODO(vojta): test this better.
var f = new Foo(1, 2);
assert(f.sum() == 3);
assert(f instanceof Foo);
export function main() {
describe('types', function() {
it('should work', function() {
// TODO(vojta): test this better.
var f = new Foo(1, 2);
assert(f.sum() == 3);
assert(f instanceof Foo);
f.typedVariables();
f.typedVariables();
});
});
}

21
tools/transpiler/src/dart_writer.js
View File

@ -6,9 +6,7 @@ import {ParseTreeWriter as JavaScriptParseTreeWriter} from 'traceur/src/outputge
export class DartTreeWriter extends JavaScriptParseTreeWriter {
constructor(moduleName, outputPath) {
super(outputPath);
this.libName = moduleName
.replace(/\//g, '.')
.replace(/[^\w.]/g, '_');
this.libName = moduleName.replace(/\//g, '.');
}
// VARIABLES - types
@ -182,10 +180,9 @@ export class DartTreeWriter extends JavaScriptParseTreeWriter {
this.visitAny(tree.moduleSpecifier);
if (tree.importClause.binding) {
// Default import - import the entire module.
// import foo from './bar';
this.write_(' as ');
this.visitAny(tree.importClause.binding);
// Default import, not supported as dart does not distinguish
// between explicit exports and default exports
throw new Error('default imports/exports not supported');
} else {
// Regular - import list of members.
// import {Foo, Bar} from './baz';
@ -221,6 +218,16 @@ export class DartTreeWriter extends JavaScriptParseTreeWriter {
}
}
visitModuleDeclaration(tree) {
// module import - import the entire module.
// import * as foo from './bar';
this.write_(IMPORT);
this.writeSpace_();
this.visitAny(tree.expression);
this.write_(' as ');
this.visitAny(tree.binding);
this.write_(SEMI_COLON);
}
// ANNOTATIONS
// TODO(vojta): this is just fixing a bug in Traceur, send a PR.

27
tools/transpiler/src/parser.js
View File

@ -3,8 +3,6 @@ import {SyntaxErrorReporter} from 'traceur/src/util/SyntaxErrorReporter';
import {TypeName, ImportSpecifier, ImportedBinding, BindingIdentifier} from 'traceur/src/syntax/trees/ParseTrees';
import {PERIOD, IMPORT, STAR, AS, FROM, CLOSE_ANGLE, OPEN_ANGLE, COMMA, OPEN_CURLY, CLOSE_CURLY, COLON} from 'traceur/src/syntax/TokenType';
var WRAPS = 'wraps';
export class Parser extends TraceurParser {
constructor(file, errorReporter = new SyntaxErrorReporter()) {
super(file, errorReporter);
@ -26,31 +24,6 @@ export class Parser extends TraceurParser {
return typeName;
}
parseImportSpecifier_() {
// Copy of original implementation
var start = this.getTreeStartLocation_();
var token = this.peekToken_();
var isKeyword = token.isKeyword();
var binding;
var name = this.eatIdName_();
// Support for wraps keywoard
if (this.peekToken_().value === WRAPS) {
token = this.nextToken_();
var wrappedIdentifier = this.eatId_();
// TODO: Save the fact that this is a wrapper type and
// also the wrapped type
}
// Copy of original implementation
if (isKeyword || this.peekPredefinedString_(AS)) {
this.eatId_(AS);
binding = this.parseImportedBinding_();
} else {
binding = new ImportedBinding(name.location, new BindingIdentifier(name.location, name));
name = null;
}
return new ImportSpecifier(this.getTreeLocation_(start), binding, name);
}
parseObjectType_() {
//TODO(misko): save the type information
this.eat_(OPEN_CURLY);