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/trunk/src/char-predicates.h /trunk/src/char-predicates.h   r2
  1 // Copyright 2006-2008 Google Inc. All Rights Reserved.
  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_H_
  29 #define V8_CHAR_PREDICATES_H_
  30
  31 namespace v8 { namespace internal {
  32
  33 // Unicode character predicates as defined by ECMA-262, 3rd,
  34 // used for lexical analysis.
  35
  36 inline bool IsCarriageReturn(uc32 c);
  37 inline bool IsLineFeed(uc32 c);
  38 inline bool IsDecimalDigit(uc32 c);
  39 inline bool IsHexDigit(uc32 c);
  40
  41 struct IdentifierStart {
  42 static inline bool Is(uc32 c) {
  43 switch (c) {
  44 case '$': case '_': case '\\': return true;
  45 default: return unibrow::Letter::Is(c);
  46 }
  47 }
  48 };
  49
  50
  51 struct IdentifierPart {
  52 static inline bool Is(uc32 c) {
  53 return IdentifierStart::Is(c)
  54 || unibrow::Number::Is(c)
  55 || unibrow::CombiningMark::Is(c)
  56 || unibrow::ConnectorPunctuation::Is(c);
  57 }
  58 };
  59
  60 } } // namespace v8::internal
  61
  62 #endif // V8_CHAR_PREDICATES_H_
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