56a486c322
- this avoids using relative include paths which are forbidden by the style guide - makes the code more readable since it's clear which header is meant - allows for starting to use checkdeps BUG=none R=jkummerow@chromium.org, danno@chromium.org LOG=n Review URL: https://codereview.chromium.org/304153016 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
// Copyright 2011 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef V8_CHAR_PREDICATES_H_
|
|
#define V8_CHAR_PREDICATES_H_
|
|
|
|
#include "src/unicode.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
// Unicode character predicates as defined by ECMA-262, 3rd,
|
|
// used for lexical analysis.
|
|
|
|
inline bool IsCarriageReturn(uc32 c);
|
|
inline bool IsLineFeed(uc32 c);
|
|
inline bool IsDecimalDigit(uc32 c);
|
|
inline bool IsHexDigit(uc32 c);
|
|
inline bool IsOctalDigit(uc32 c);
|
|
inline bool IsBinaryDigit(uc32 c);
|
|
inline bool IsRegExpWord(uc32 c);
|
|
inline bool IsRegExpNewline(uc32 c);
|
|
|
|
struct IdentifierStart {
|
|
static inline bool Is(uc32 c) {
|
|
switch (c) {
|
|
case '$': case '_': case '\\': return true;
|
|
default: return unibrow::Letter::Is(c);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
struct IdentifierPart {
|
|
static inline bool Is(uc32 c) {
|
|
return IdentifierStart::Is(c)
|
|
|| unibrow::Number::Is(c)
|
|
|| c == 0x200C // U+200C is Zero-Width Non-Joiner.
|
|
|| c == 0x200D // U+200D is Zero-Width Joiner.
|
|
|| unibrow::CombiningMark::Is(c)
|
|
|| unibrow::ConnectorPunctuation::Is(c);
|
|
}
|
|
};
|
|
|
|
|
|
// WhiteSpace according to ECMA-262 5.1, 7.2.
|
|
struct WhiteSpace {
|
|
static inline bool Is(uc32 c) {
|
|
return c == 0x0009 || // <TAB>
|
|
c == 0x000B || // <VT>
|
|
c == 0x000C || // <FF>
|
|
c == 0xFEFF || // <BOM>
|
|
// \u0020 and \u00A0 are included in unibrow::WhiteSpace.
|
|
unibrow::WhiteSpace::Is(c);
|
|
}
|
|
};
|
|
|
|
|
|
// WhiteSpace and LineTerminator according to ECMA-262 5.1, 7.2 and 7.3.
|
|
struct WhiteSpaceOrLineTerminator {
|
|
static inline bool Is(uc32 c) {
|
|
return WhiteSpace::Is(c) || unibrow::LineTerminator::Is(c);
|
|
}
|
|
};
|
|
|
|
} } // namespace v8::internal
|
|
|
|
#endif // V8_CHAR_PREDICATES_H_
|