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Side by Side Diff: sdk/lib/_internal/compiler/implementation/js_emitter/reflection_data_parser.dart

Issue 237583014: JS templates (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: cleanup Created 6 years, 8 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 part of dart2js.js_emitter; 5 part of dart2js.js_emitter;
6 6
7 // TODO(ahe): Share these with js_helper.dart. 7 // TODO(ahe): Share these with js_helper.dart.
8 const FUNCTION_INDEX = 0; 8 const FUNCTION_INDEX = 0;
9 const NAME_INDEX = 1; 9 const NAME_INDEX = 1;
10 const CALL_NAME_INDEX = 2; 10 const CALL_NAME_INDEX = 2;
11 const REQUIRED_PARAMETER_INDEX = 3; 11 const REQUIRED_PARAMETER_INDEX = 3;
12 const OPTIONAL_PARAMETER_INDEX = 4; 12 const OPTIONAL_PARAMETER_INDEX = 4;
13 const DEFAULT_ARGUMENTS_INDEX = 5; 13 const DEFAULT_ARGUMENTS_INDEX = 5;
14 14
15 const bool VALIDATE_DATA = false; 15 const bool VALIDATE_DATA = false;
16 16
17 // TODO(ahe): This code should be integrated in CodeEmitterTask.finishClasses. 17 // TODO(ahe): This code should be integrated in CodeEmitterTask.finishClasses.
18 jsAst.Expression getReflectionDataParser(String classesCollector, 18 jsAst.Expression getReflectionDataParser(String classesCollector,
19 JavaScriptBackend backend) { 19 JavaScriptBackend backend) {
20 var text = getReflectionDataParserAsString(classesCollector, backend);
21 return js(text);
22 }
23
24
25 String getReflectionDataParserAsString(String classesCollector,
26 JavaScriptBackend backend) {
27 Namer namer = backend.namer; 20 Namer namer = backend.namer;
28 Compiler compiler = backend.compiler; 21 Compiler compiler = backend.compiler;
29 Element closureFromTearOff = compiler.findHelper('closureFromTearOff'); 22 Element closureFromTearOff = compiler.findHelper('closureFromTearOff');
30 String tearOffAccess; 23 String tearOffAccess;
31 String tearOffGlobalObjectName; 24 String tearOffGlobalObjectName;
32 String tearOffGlobalObject; 25 String tearOffGlobalObject;
33 if (closureFromTearOff != null) { 26 if (closureFromTearOff != null) {
34 tearOffAccess = namer.isolateAccess(closureFromTearOff); 27 tearOffAccess = namer.isolateAccess(closureFromTearOff);
35 tearOffGlobalObjectName = tearOffGlobalObject = 28 tearOffGlobalObjectName = tearOffGlobalObject =
36 namer.globalObjectFor(closureFromTearOff); 29 namer.globalObjectFor(closureFromTearOff);
(...skipping 19 matching lines...) Expand all
56 49
57 String unmangledNameIndex = backend.mustRetainMetadata 50 String unmangledNameIndex = backend.mustRetainMetadata
58 ? ' 3 * optionalParameterCount + 2 * requiredParameterCount + 3' 51 ? ' 3 * optionalParameterCount + 2 * requiredParameterCount + 3'
59 : ' 2 * optionalParameterCount + requiredParameterCount + 3'; 52 : ' 2 * optionalParameterCount + requiredParameterCount + 3';
60 53
61 54
62 String header = ''' 55 String header = '''
63 (function (reflectionData) { 56 (function (reflectionData) {
64 "use strict"; 57 "use strict";
65 58
66 // [map] returns an object literal that V8 shouldn't try to optimize with a 59 // [map] returns an object literal that V8 shouldn not try to optimize with a
67 // hidden class. This prevents a potential performance problem where V8 tries 60 // hidden class. This prevents a potential performance problem where V8 tries
68 // to build a hidden class for an object used as a hashMap. 61 // to build a hidden class for an object used as a hashMap.
69 62
70 function map(x){x={x:x};delete x.x;return x} 63 function map(x){x={x:x};delete x.x;return x}
71 '''; 64 ''';
72 65
73 String processStatics = ''' 66 String processStatics = '''
74 function processStatics(descriptor) { 67 function processStatics(descriptor) {
75 for (var property in descriptor) { 68 for (var property in descriptor) {
76 if (!hasOwnProperty.call(descriptor, property)) continue; 69 if (!hasOwnProperty.call(descriptor, property)) continue;
(...skipping 237 matching lines...) Expand 10 before | Expand all | Expand 10 after
314 '''; 307 ''';
315 308
316 String footer = ''' 309 String footer = '''
317 processStatics(descriptor); 310 processStatics(descriptor);
318 libraries.push([name, uri, classes, functions, metadata, fields, isRoot, 311 libraries.push([name, uri, classes, functions, metadata, fields, isRoot,
319 globalObject]); 312 globalObject]);
320 } 313 }
321 }) 314 })
322 '''; 315 ''';
323 316
324 return '$header$processStatics$addStubs$tearOff$init$footer'; 317 return js('$header$processStatics$addStubs$tearOff$init$footer');
325 } 318 }
326 319
327 String readString(String array, String index) { 320 String readString(String array, String index) {
328 return readChecked( 321 return readChecked(
329 array, index, 'result != null && typeof result != "string"', 'string'); 322 array, index, 'result != null && typeof result != "string"', 'string');
330 } 323 }
331 324
332 String readInt(String array, String index) { 325 String readInt(String array, String index) {
333 return readChecked( 326 return readChecked(
334 array, index, 327 array, index,
(...skipping 22 matching lines...) Expand all
357 (function() { 350 (function() {
358 var result = $array[$index]; 351 var result = $array[$index];
359 if ($check) { 352 if ($check) {
360 throw new Error( 353 throw new Error(
361 name + ": expected value of type \'$type\' at index " + ($index) + 354 name + ": expected value of type \'$type\' at index " + ($index) +
362 " but got " + (typeof result)); 355 " but got " + (typeof result));
363 } 356 }
364 return result; 357 return result;
365 })()'''; 358 })()''';
366 } 359 }
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