1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef V8_CHAR_PREDICATES_INL_H_
6 #define V8_CHAR_PREDICATES_INL_H_
8 #include "src/char-predicates.h"
14 // If c is in 'A'-'Z' or 'a'-'z', return its lower-case.
15 // Else, return something outside of 'A'-'Z' and 'a'-'z'.
16 // Note: it ignores LOCALE.
17 inline int AsciiAlphaToLower(uc32 c) {
22 inline bool IsCarriageReturn(uc32 c) {
27 inline bool IsLineFeed(uc32 c) {
32 inline bool IsInRange(int value, int lower_limit, int higher_limit) {
33 DCHECK(lower_limit <= higher_limit);
34 return static_cast<unsigned int>(value - lower_limit) <=
35 static_cast<unsigned int>(higher_limit - lower_limit);
38 inline bool IsAsciiIdentifier(uc32 c) {
39 return IsAlphaNumeric(c) || c == '$' || c == '_';
42 inline bool IsAlphaNumeric(uc32 c) {
43 return IsInRange(AsciiAlphaToLower(c), 'a', 'z') || IsDecimalDigit(c);
46 inline bool IsDecimalDigit(uc32 c) {
47 // ECMA-262, 3rd, 7.8.3 (p 16)
48 return IsInRange(c, '0', '9');
52 inline bool IsHexDigit(uc32 c) {
53 // ECMA-262, 3rd, 7.6 (p 15)
54 return IsDecimalDigit(c) || IsInRange(AsciiAlphaToLower(c), 'a', 'f');
58 inline bool IsOctalDigit(uc32 c) {
59 // ECMA-262, 6th, 7.8.3
60 return IsInRange(c, '0', '7');
64 inline bool IsBinaryDigit(uc32 c) {
65 // ECMA-262, 6th, 7.8.3
66 return c == '0' || c == '1';
70 inline bool IsRegExpWord(uc16 c) {
71 return IsInRange(AsciiAlphaToLower(c), 'a', 'z')
77 inline bool IsRegExpNewline(uc16 c) {
80 case 0x000A: case 0x000D: case 0x2028: case 0x2029:
88 } } // namespace v8::internal
90 #endif // V8_CHAR_PREDICATES_INL_H_