blob: dcef6aa782006c14f392f75e76e0a86c7a931479 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
// Scintilla source code edit control
/** @file CharacterType.h
** Tests for character type and case-insensitive comparisons.
**/
// Copyright 2007 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#ifndef CHARACTERTYPE_H
#define CHARACTERTYPE_H
namespace Scintilla::Internal {
// Functions for classifying characters
constexpr bool IsASpace(int ch) noexcept {
return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d));
}
constexpr bool IsASpaceOrTab(int ch) noexcept {
return (ch == ' ') || (ch == '\t');
}
constexpr bool IsADigit(int ch) noexcept {
return (ch >= '0') && (ch <= '9');
}
constexpr bool IsADigit(int ch, int base) noexcept {
if (base <= 10) {
return (ch >= '0') && (ch < '0' + base);
} else {
return ((ch >= '0') && (ch <= '9')) ||
((ch >= 'A') && (ch < 'A' + base - 10)) ||
((ch >= 'a') && (ch < 'a' + base - 10));
}
}
constexpr bool IsASCII(int ch) noexcept {
return (ch >= 0) && (ch < 0x80);
}
constexpr bool IsLowerCase(int ch) noexcept {
return (ch >= 'a') && (ch <= 'z');
}
constexpr bool IsUpperCase(int ch) noexcept {
return (ch >= 'A') && (ch <= 'Z');
}
constexpr bool IsUpperOrLowerCase(int ch) noexcept {
return IsUpperCase(ch) || IsLowerCase(ch);
}
constexpr bool IsAlphaNumeric(int ch) noexcept {
return
((ch >= '0') && (ch <= '9')) ||
((ch >= 'a') && (ch <= 'z')) ||
((ch >= 'A') && (ch <= 'Z'));
}
/**
* Check if a character is a space.
* This is ASCII specific but is safe with chars >= 0x80.
*/
constexpr bool isspacechar(int ch) noexcept {
return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d));
}
constexpr bool iswordchar(int ch) noexcept {
return IsAlphaNumeric(ch) || ch == '.' || ch == '_';
}
constexpr bool iswordstart(int ch) noexcept {
return IsAlphaNumeric(ch) || ch == '_';
}
constexpr bool isoperator(int ch) noexcept {
if (IsAlphaNumeric(ch))
return false;
if (ch == '%' || ch == '^' || ch == '&' || ch == '*' ||
ch == '(' || ch == ')' || ch == '-' || ch == '+' ||
ch == '=' || ch == '|' || ch == '{' || ch == '}' ||
ch == '[' || ch == ']' || ch == ':' || ch == ';' ||
ch == '<' || ch == '>' || ch == ',' || ch == '/' ||
ch == '?' || ch == '!' || ch == '.' || ch == '~')
return true;
return false;
}
// Simple case functions for ASCII supersets.
template <typename T>
constexpr T MakeUpperCase(T ch) noexcept {
if (ch < 'a' || ch > 'z')
return ch;
else
return ch - 'a' + 'A';
}
template <typename T>
constexpr T MakeLowerCase(T ch) noexcept {
if (ch < 'A' || ch > 'Z')
return ch;
else
return ch - 'A' + 'a';
}
int CompareCaseInsensitive(const char *a, const char *b) noexcept;
int CompareNCaseInsensitive(const char *a, const char *b, size_t len) noexcept;
}
#endif
|
