ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_CHAR_PREDICATES_INL_H_ |
| 29 | #define V8_CHAR_PREDICATES_INL_H_ |
| 30 | |
| 31 | #include "char-predicates.h" |
| 32 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 33 | namespace v8 { |
| 34 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 35 | |
| 36 | |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 37 | // If c is in 'A'-'Z' or 'a'-'z', return its lower-case. |
| 38 | // Else, return something outside of 'A'-'Z' and 'a'-'z'. |
| 39 | // Note: it ignores LOCALE. |
| 40 | inline int AsciiAlphaToLower(uc32 c) { |
| 41 | return c | 0x20; |
| 42 | } |
| 43 | |
| 44 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 45 | inline bool IsCarriageReturn(uc32 c) { |
| 46 | return c == 0x000D; |
| 47 | } |
| 48 | |
| 49 | |
| 50 | inline bool IsLineFeed(uc32 c) { |
| 51 | return c == 0x000A; |
| 52 | } |
| 53 | |
| 54 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 55 | static inline bool IsInRange(int value, int lower_limit, int higher_limit) { |
| 56 | ASSERT(lower_limit <= higher_limit); |
| 57 | return static_cast<unsigned int>(value - lower_limit) <= |
| 58 | static_cast<unsigned int>(higher_limit - lower_limit); |
| 59 | } |
| 60 | |
| 61 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 62 | inline bool IsDecimalDigit(uc32 c) { |
| 63 | // ECMA-262, 3rd, 7.8.3 (p 16) |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 64 | return IsInRange(c, '0', '9'); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | |
| 68 | inline bool IsHexDigit(uc32 c) { |
| 69 | // ECMA-262, 3rd, 7.6 (p 15) |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 70 | return IsDecimalDigit(c) || IsInRange(AsciiAlphaToLower(c), 'a', 'f'); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 74 | inline bool IsRegExpWord(uc16 c) { |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 75 | return IsInRange(AsciiAlphaToLower(c), 'a', 'z') |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 76 | || IsDecimalDigit(c) |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 77 | || (c == '_'); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | inline bool IsRegExpNewline(uc16 c) { |
| 82 | switch (c) { |
| 83 | // CR LF LS PS |
| 84 | case 0x000A: case 0x000D: case 0x2028: case 0x2029: |
| 85 | return false; |
| 86 | default: |
| 87 | return true; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 92 | } } // namespace v8::internal |
| 93 | |
| 94 | #endif // V8_CHAR_PREDICATES_INL_H_ |