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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, 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 library dart2js.js_emitter.startup_emitter.model_emitter; | 5 library dart2js.js_emitter.startup_emitter.model_emitter; |
6 | 6 |
7 import '../../constants/values.dart' show ConstantValue, FunctionConstantValue; | 7 import '../../constants/values.dart' show ConstantValue, FunctionConstantValue; |
8 import '../../dart2jslib.dart' show Compiler; | 8 import '../../dart2jslib.dart' show Compiler; |
9 import '../../elements/elements.dart' show ClassElement, FunctionElement; | 9 import '../../elements/elements.dart' show ClassElement, FunctionElement; |
10 import '../../js/js.dart' as js; | 10 import '../../js/js.dart' as js; |
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28 LEAF_TAGS, | 28 LEAF_TAGS, |
29 MANGLED_GLOBAL_NAMES, | 29 MANGLED_GLOBAL_NAMES, |
30 METADATA, | 30 METADATA, |
31 NATIVE_SUPERCLASS_TAG_NAME, | 31 NATIVE_SUPERCLASS_TAG_NAME, |
32 TYPE_TO_INTERCEPTOR_MAP, | 32 TYPE_TO_INTERCEPTOR_MAP, |
33 TYPES; | 33 TYPES; |
34 | 34 |
35 import '../js_emitter.dart' show NativeGenerator, buildTearOffCode; | 35 import '../js_emitter.dart' show NativeGenerator, buildTearOffCode; |
36 import '../model.dart'; | 36 import '../model.dart'; |
37 | 37 |
| 38 part 'fragment_emitter.dart'; |
| 39 |
38 class ModelEmitter { | 40 class ModelEmitter { |
39 final Compiler compiler; | 41 final Compiler compiler; |
40 final Namer namer; | 42 final Namer namer; |
41 ConstantEmitter constantEmitter; | 43 ConstantEmitter constantEmitter; |
42 final NativeEmitter nativeEmitter; | 44 final NativeEmitter nativeEmitter; |
43 | 45 |
44 JavaScriptBackend get backend => compiler.backend; | 46 JavaScriptBackend get backend => compiler.backend; |
45 | 47 |
46 /// For deferred loading we communicate the initializers via this global var. | 48 /// For deferred loading we communicate the initializers via this global var. |
47 static const String deferredInitializersGlobal = | 49 static const String deferredInitializersGlobal = |
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117 // We are only interested in the "isInlined" part, but it does not hurt to | 119 // We are only interested in the "isInlined" part, but it does not hurt to |
118 // test for the other predicates. | 120 // test for the other predicates. |
119 if (isConstantInlinedOrAlreadyEmitted(value)) { | 121 if (isConstantInlinedOrAlreadyEmitted(value)) { |
120 return constantEmitter.generate(value); | 122 return constantEmitter.generate(value); |
121 } | 123 } |
122 return js.js('#.#', [namer.globalObjectForConstant(value), | 124 return js.js('#.#', [namer.globalObjectForConstant(value), |
123 namer.constantName(value)]); | 125 namer.constantName(value)]); |
124 } | 126 } |
125 | 127 |
126 int emitProgram(Program program) { | 128 int emitProgram(Program program) { |
127 // TODO(floitsch): implement. | 129 List<Fragment> fragments = program.fragments; |
128 throw new UnimplementedError("startup-emitter.emitProgram"); | 130 MainFragment mainFragment = fragments.first; |
| 131 |
| 132 int totalSize = 0; |
| 133 |
| 134 FragmentEmitter fragmentEmitter = |
| 135 new FragmentEmitter(compiler, namer, backend, constantEmitter, this); |
| 136 |
| 137 // We have to emit the deferred fragments first, since we need their |
| 138 // deferred hash (which depends on the output) when emitting the main |
| 139 // fragment. |
| 140 List<js.Expression> fragmentsCode = fragments.skip(1).map( |
| 141 (DeferredFragment deferredFragment) { |
| 142 js.Expression types = |
| 143 program.metadataTypesForOutputUnit(deferredFragment.outputUnit); |
| 144 return fragmentEmitter.emitDeferredFragment( |
| 145 deferredFragment, types, program.holders); |
| 146 }).toList(); |
| 147 |
| 148 js.Statement mainAst = fragmentEmitter.emitMainFragment(program); |
| 149 |
| 150 js.TokenCounter counter = new js.TokenCounter(); |
| 151 fragmentsCode.forEach(counter.countTokens); |
| 152 counter.countTokens(mainAst); |
| 153 |
| 154 program.finalizers.forEach((js.TokenFinalizer f) => f.finalizeTokens()); |
| 155 |
| 156 for (int i = 0; i < fragmentsCode.length; ++i) { |
| 157 String code = js.prettyPrint(fragmentsCode[i], compiler).getText(); |
| 158 totalSize += code.length; |
| 159 compiler.outputProvider(fragments[i+1].outputFileName, deferredExtension) |
| 160 ..add(code) |
| 161 ..close(); |
| 162 } |
| 163 |
| 164 String mainCode = js.prettyPrint(mainAst, compiler).getText(); |
| 165 compiler.outputProvider(mainFragment.outputFileName, 'js') |
| 166 ..add(buildGeneratedBy(compiler)) |
| 167 ..add(mainCode) |
| 168 ..close(); |
| 169 totalSize += mainCode.length; |
| 170 |
| 171 return totalSize; |
| 172 } |
| 173 |
| 174 String buildGeneratedBy(compiler) { |
| 175 var suffix = ''; |
| 176 if (compiler.hasBuildId) suffix = ' version: ${compiler.buildId}'; |
| 177 return '// Generated by dart2js (fast startup), ' |
| 178 'the Dart to JavaScript compiler$suffix.\n'; |
129 } | 179 } |
130 } | 180 } |
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