| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
|
|
| /**
|
| * @assertion A numeric literal is either a decimal or hexadecimal integer of
|
| * arbitrary size, or a decimal double.
|
| *
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| * numericLiteral:
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| * NUMBER|
|
| * HEX_NUMBER
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| *;
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| * NUMBER:
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| * DIGIT+ ('.' DIGIT+)? EXPONENT? |
|
| * '.' DIGIT+ EXPONENT?
|
| * ;
|
| * EXPONENT:
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| * ('e' | 'E') ('+' | '-')? DIGIT+
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| * ;
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| * HEX NUMBER:
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| * '0x' HEX DIGIT+ |
|
| * '0X' HEX DIGIT+
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| * ;
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| * HEX DIGIT:
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| * 'a'..'f' |
|
| * 'A'..'F' |
|
| * DIGIT
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| * ;
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| * @description Checks that it is a compile-time error if the exponent part of
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| * a numeric literal contains both '+' and '-' signs.
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| * @compile-error
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| * @author iefremov
|
| */
|
|
|
| main() {
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| var i = 1e+-1;
|
| }
|
