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// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_CHAR_PREDICATES_INL_H_
#define V8_CHAR_PREDICATES_INL_H_
#include "char-predicates.h"
namespace v8 {
namespace internal {
// If c is in 'A'-'Z' or 'a'-'z', return its lower-case.
// Else, return something outside of 'A'-'Z' and 'a'-'z'.
// Note: it ignores LOCALE.
inline int AsciiAlphaToLower(uc32 c) {
return c | 0x20;
}
inline bool IsCarriageReturn(uc32 c) {
return c == 0x000D;
}
inline bool IsLineFeed(uc32 c) {
return c == 0x000A;
}
inline bool IsInRange(int value, int lower_limit, int higher_limit) {
ASSERT(lower_limit <= higher_limit);
return static_cast<unsigned int>(value - lower_limit) <=
static_cast<unsigned int>(higher_limit - lower_limit);
}
inline bool IsDecimalDigit(uc32 c) {
// ECMA-262, 3rd, 7.8.3 (p 16)
return IsInRange(c, '0', '9');
}
inline bool IsHexDigit(uc32 c) {
// ECMA-262, 3rd, 7.6 (p 15)
return IsDecimalDigit(c) || IsInRange(AsciiAlphaToLower(c), 'a', 'f');
}
inline bool IsRegExpWord(uc16 c) {
return IsInRange(AsciiAlphaToLower(c), 'a', 'z')
|| IsDecimalDigit(c)
|| (c == '_');
}
inline bool IsRegExpNewline(uc16 c) {
switch (c) {
// CR LF LS PS
case 0x000A: case 0x000D: case 0x2028: case 0x2029:
return false;
default:
return true;
}
}
} } // namespace v8::internal
#endif // V8_CHAR_PREDICATES_INL_H_
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