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1 // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2017, 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_model.locals; | 5 library dart2js.js_model.locals; |
6 | 6 |
7 import 'package:kernel/ast.dart' as ir; | 7 import 'package:kernel/ast.dart' as ir; |
8 | 8 |
9 import 'closure.dart' show JClosureClass; | 9 import 'closure.dart' show JClosureClass; |
10 import '../closure.dart'; | 10 import '../closure.dart'; |
11 import '../common.dart'; | 11 import '../common.dart'; |
12 import '../elements/entities.dart'; | 12 import '../elements/entities.dart'; |
13 import '../elements/jumps.dart'; | 13 import '../elements/jumps.dart'; |
14 import '../kernel/element_map.dart'; | 14 import '../kernel/element_map.dart'; |
15 | 15 |
16 class GlobalLocalsMap { | 16 class GlobalLocalsMap { |
17 Map<MemberEntity, KernelToLocalsMap> _localsMaps = | 17 Map<MemberEntity, KernelToLocalsMap> _localsMaps = |
18 <MemberEntity, KernelToLocalsMap>{}; | 18 <MemberEntity, KernelToLocalsMap>{}; |
19 | 19 |
20 KernelToLocalsMap getLocalsMap(MemberEntity member) { | 20 KernelToLocalsMap getLocalsMap(MemberEntity member) { |
21 return _localsMaps.putIfAbsent( | 21 return _localsMaps.putIfAbsent( |
22 member, () => new KernelToLocalsMapImpl(member)); | 22 member, () => new KernelToLocalsMapImpl(member)); |
23 } | 23 } |
24 } | 24 } |
25 | 25 |
26 class KernelToLocalsMapImpl implements KernelToLocalsMap { | 26 class KernelToLocalsMapImpl implements KernelToLocalsMap { |
27 final List<MemberEntity> _members = <MemberEntity>[]; | 27 final List<MemberEntity> _members = <MemberEntity>[]; |
28 Map<ir.TreeNode, JLocal> _map = <ir.TreeNode, JLocal>{}; | 28 Map<ir.VariableDeclaration, JLocal> _map = <ir.VariableDeclaration, JLocal>{}; |
29 Map<ir.TreeNode, JJumpTarget> _jumpTargetMap; | 29 Map<ir.TreeNode, JJumpTarget> _jumpTargetMap; |
30 Set<ir.BreakStatement> _breaksAsContinue; | 30 Set<ir.BreakStatement> _breaksAsContinue; |
31 | 31 |
32 MemberEntity get currentMember => _members.last; | 32 MemberEntity get currentMember => _members.last; |
33 | 33 |
34 // TODO(johnniwinther): Compute this eagerly from the root of the member. | 34 // TODO(johnniwinther): Compute this eagerly from the root of the member. |
35 void _ensureJumpMap(ir.TreeNode node) { | 35 void _ensureJumpMap(ir.TreeNode node) { |
36 if (_jumpTargetMap == null) { | 36 if (_jumpTargetMap == null) { |
37 JumpVisitor visitor = new JumpVisitor(currentMember); | 37 JumpVisitor visitor = new JumpVisitor(currentMember); |
38 | 38 |
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135 .localsMap | 135 .localsMap |
136 .getLocalVariable(node); | 136 .getLocalVariable(node); |
137 } | 137 } |
138 return _map.putIfAbsent(node, () { | 138 return _map.putIfAbsent(node, () { |
139 return new JLocal( | 139 return new JLocal( |
140 node.name, currentMember, node.parent is ir.FunctionNode); | 140 node.name, currentMember, node.parent is ir.FunctionNode); |
141 }); | 141 }); |
142 } | 142 } |
143 | 143 |
144 @override | 144 @override |
145 // TODO(johnniwinther): Split this out into two methods -- one for | |
146 // FunctionDeclaration and one for FunctionExpression, since basically the | |
147 // whole thing is different depending on the node type. The reason it's not | |
148 // done yet is the version of this function that it's overriding has a little | |
149 // bit of commonality. | |
150 Local getLocalFunction(ir.TreeNode node) { | |
151 assert(node is ir.FunctionDeclaration || node is ir.FunctionExpression, | |
152 failedAt(currentMember, 'Invalid local function node: $node')); | |
153 var lookupName = node; | |
154 if (node is ir.FunctionDeclaration) lookupName = node.variable; | |
155 return _map.putIfAbsent(lookupName, () { | |
156 String name; | |
157 if (node is ir.FunctionDeclaration) { | |
158 name = node.variable.name; | |
159 } else if (node is ir.FunctionExpression) { | |
160 name = ''; | |
161 } | |
162 return new JLocal(name, currentMember); | |
163 }); | |
164 } | |
165 | |
166 @override | |
167 CapturedLoopScope getCapturedLoopScope( | 145 CapturedLoopScope getCapturedLoopScope( |
168 ClosureDataLookup closureLookup, ir.TreeNode node) { | 146 ClosureDataLookup closureLookup, ir.TreeNode node) { |
169 return closureLookup.getCapturedLoopScope(node); | 147 return closureLookup.getCapturedLoopScope(node); |
170 } | 148 } |
171 | 149 |
172 @override | 150 @override |
173 ClosureRepresentationInfo getClosureRepresentationInfo( | 151 ClosureRepresentationInfo getClosureRepresentationInfo( |
174 ClosureDataLookup closureLookup, ir.TreeNode node) { | 152 ClosureDataLookup closureLookup, ir.TreeNode node) { |
175 return closureLookup.getClosureInfo(node); | 153 return closureLookup.getClosureInfo(node); |
176 } | 154 } |
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364 sb.write(memberContext.enclosingClass.name); | 342 sb.write(memberContext.enclosingClass.name); |
365 sb.write('.'); | 343 sb.write('.'); |
366 } | 344 } |
367 sb.write(memberContext.name); | 345 sb.write(memberContext.name); |
368 sb.write('#'); | 346 sb.write('#'); |
369 sb.write(name); | 347 sb.write(name); |
370 sb.write(')'); | 348 sb.write(')'); |
371 return sb.toString(); | 349 return sb.toString(); |
372 } | 350 } |
373 } | 351 } |
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