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94 lines
2.9 KiB
94 lines
2.9 KiB
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_CHAR_PREDICATES_INL_H_
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#define V8_CHAR_PREDICATES_INL_H_
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#include "char-predicates.h"
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namespace v8 {
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namespace internal {
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// If c is in 'A'-'Z' or 'a'-'z', return its lower-case.
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// Else, return something outside of 'A'-'Z' and 'a'-'z'.
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// Note: it ignores LOCALE.
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inline int AsciiAlphaToLower(uc32 c) {
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return c | 0x20;
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}
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inline bool IsCarriageReturn(uc32 c) {
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return c == 0x000D;
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}
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inline bool IsLineFeed(uc32 c) {
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return c == 0x000A;
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}
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static inline bool IsInRange(int value, int lower_limit, int higher_limit) {
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ASSERT(lower_limit <= higher_limit);
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return static_cast<unsigned int>(value - lower_limit) <=
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static_cast<unsigned int>(higher_limit - lower_limit);
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}
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inline bool IsDecimalDigit(uc32 c) {
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// ECMA-262, 3rd, 7.8.3 (p 16)
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return IsInRange(c, '0', '9');
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}
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inline bool IsHexDigit(uc32 c) {
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// ECMA-262, 3rd, 7.6 (p 15)
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return IsDecimalDigit(c) || IsInRange(AsciiAlphaToLower(c), 'a', 'f');
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}
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inline bool IsRegExpWord(uc16 c) {
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return IsInRange(AsciiAlphaToLower(c), 'a', 'z')
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|| IsDecimalDigit(c)
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|| (c == '_');
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}
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inline bool IsRegExpNewline(uc16 c) {
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switch (c) {
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// CR LF LS PS
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case 0x000A: case 0x000D: case 0x2028: case 0x2029:
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return false;
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default:
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return true;
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}
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}
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} } // namespace v8::internal
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#endif // V8_CHAR_PREDICATES_INL_H_
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