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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 js_backend; | 5 part of js_backend; |
6 | 6 |
7 typedef jsAst.Expression _ConstantReferenceGenerator(ConstantValue constant); | 7 typedef jsAst.Expression _ConstantReferenceGenerator(ConstantValue constant); |
8 | 8 |
9 typedef jsAst.Expression _ConstantListGenerator(jsAst.Expression array); | 9 typedef jsAst.Expression _ConstantListGenerator(jsAst.Expression array); |
10 | 10 |
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57 reporter.internalError(NO_LOCATION_SPANNABLE, | 57 reporter.internalError(NO_LOCATION_SPANNABLE, |
58 "The function constant does not need specific JS code."); | 58 "The function constant does not need specific JS code."); |
59 return null; | 59 return null; |
60 } | 60 } |
61 | 61 |
62 @override | 62 @override |
63 jsAst.Expression visitNull(NullConstantValue constant, [_]) { | 63 jsAst.Expression visitNull(NullConstantValue constant, [_]) { |
64 return new jsAst.LiteralNull(); | 64 return new jsAst.LiteralNull(); |
65 } | 65 } |
66 | 66 |
| 67 @override |
| 68 jsAst.Expression visitNonConstant(NonConstantValue constant, [_]) { |
| 69 return new jsAst.LiteralNull(); |
| 70 } |
| 71 |
67 static final _exponentialRE = new RegExp('^' | 72 static final _exponentialRE = new RegExp('^' |
68 '\([-+]?\)' // 1: sign | 73 '\([-+]?\)' // 1: sign |
69 '\([0-9]+\)' // 2: leading digit(s) | 74 '\([0-9]+\)' // 2: leading digit(s) |
70 '\(\.\([0-9]*\)\)?' // 4: fraction digits | 75 '\(\.\([0-9]*\)\)?' // 4: fraction digits |
71 'e\([-+]?[0-9]+\)' // 5: exponent with sign | 76 'e\([-+]?[0-9]+\)' // 5: exponent with sign |
72 r'$'); | 77 r'$'); |
73 | 78 |
74 /// Reduces the size of exponential representations when minification is | 79 /// Reduces the size of exponential representations when minification is |
75 /// enabled. | 80 /// enabled. |
76 /// | 81 /// |
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316 [value, argumentList]); | 321 [value, argumentList]); |
317 } | 322 } |
318 return value; | 323 return value; |
319 } | 324 } |
320 | 325 |
321 @override | 326 @override |
322 jsAst.Expression visitDeferred(DeferredConstantValue constant, [_]) { | 327 jsAst.Expression visitDeferred(DeferredConstantValue constant, [_]) { |
323 return constantReferenceGenerator(constant.referenced); | 328 return constantReferenceGenerator(constant.referenced); |
324 } | 329 } |
325 } | 330 } |
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