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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
// Copyright 2010, SIL International, All rights reserved.
#pragma once
#include <cstdlib>
#include "graphite2/Types.h"
#ifdef GRAPHITE2_CUSTOM_HEADER
#include GRAPHITE2_CUSTOM_HEADER
#endif
namespace graphite2 {
typedef gr_uint8 uint8;
typedef gr_uint8 byte;
typedef gr_uint16 uint16;
typedef gr_uint32 uint32;
typedef gr_int8 int8;
typedef gr_int16 int16;
typedef gr_int32 int32;
typedef size_t uintptr;
#ifdef GRAPHITE2_TELEMETRY
struct telemetry
{
class category;
static size_t * _category;
static void set_category(size_t & t) throw() { _category = &t; }
static void stop() throw() { _category = 0; }
static void count_bytes(size_t n) throw() { if (_category) *_category += n; }
size_t misc,
silf,
glyph,
code,
states,
starts,
transitions;
telemetry() : misc(0), silf(0), glyph(0), code(0), states(0), starts(0), transitions(0) {}
};
class telemetry::category
{
size_t * _prev;
public:
category(size_t & t) : _prev(_category) { _category = &t; }
~category() { _category = _prev; }
};
#else
struct telemetry {};
#endif
// Checked multiplaction to catch overflow or underflow when allocating memory
#if defined(__has_builtin)
#if __has_builtin(__builtin_mul_overflow)
#define HAVE_BUILTIN_OVERFLOW
#endif
#elif defined(__GNUC__) && (__GNUC__ >= 5) && !defined(__INTEL_COMPILER)
#define HAVE_BUILTIN_OVERFLOW
#endif
#if defined(__has_include)
#if __has_include(<intsafe.h>) && !defined(__CYGWIN__)
#define HAVE_INTSAFE_H
#endif
#elif defined(_WIN32)
#define HAVE_INTSAFE_H
#endif
// Need to import intsafe into the top level namespace
#if defined(HAVE_INTSAFE_H)
} // namespace graphite2
#include <intsafe.h>
namespace graphite2 {
#endif
#if defined(HAVE_BUILTIN_OVERFLOW)
inline
bool checked_mul(const size_t a, const size_t b, size_t & t) {
return __builtin_mul_overflow(a, b, &t);
}
#elif defined(HAVE_INTSAFE_H)
inline
bool checked_mul(const size_t a, const size_t b, size_t & t) {
return SizeTMult(a, b, &t) == INTSAFE_E_ARITHMETIC_OVERFLOW;
}
#else
inline
bool checked_mul(const size_t a, const size_t b, size_t & t) {
t = a*b;
return (((a | b) & (~size_t(0) << (sizeof(size_t) << 2))) && (t / a != b));
}
#endif
// typesafe wrapper around malloc for simple types
// use free(pointer) to deallocate
template <typename T> T * gralloc(size_t n)
{
size_t total;
if (checked_mul(n, sizeof(T), total))
return 0;
#ifdef GRAPHITE2_TELEMETRY
telemetry::count_bytes(total);
#endif
return static_cast<T*>(malloc(total));
}
template <typename T> T * grzeroalloc(size_t n)
{
#ifdef GRAPHITE2_TELEMETRY
telemetry::count_bytes(sizeof(T) * n);
#endif
return static_cast<T*>(calloc(n, sizeof(T)));
}
template <typename T>
inline T min(const T a, const T b)
{
return a < b ? a : b;
}
template <typename T>
inline T max(const T a, const T b)
{
return a > b ? a : b;
}
} // namespace graphite2
#define CLASS_NEW_DELETE \
void * operator new (size_t size){ return gralloc<byte>(size);} \
void * operator new (size_t, void * p) throw() { return p; } \
void * operator new[] (size_t size) {return gralloc<byte>(size);} \
void * operator new[] (size_t, void * p) throw() { return p; } \
void operator delete (void * p) throw() { free(p);} \
void operator delete (void *, void *) throw() {} \
void operator delete[] (void * p)throw() { free(p); } \
void operator delete[] (void *, void *) throw() {}
#if defined(__GNUC__) || defined(__clang__)
#define GR_MAYBE_UNUSED __attribute__((unused))
#else
#define GR_MAYBE_UNUSED
#endif
#ifndef __has_cpp_attribute
# define __has_cpp_attribute(x) 0
#endif
#if __has_cpp_attribute(clang::fallthrough)
# define GR_FALLTHROUGH [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
# define GR_FALLTHROUGH [[gnu::fallthrough]]
#elif defined(_MSC_VER)
/*
* MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
* https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
*/
#include <sal.h>
#define GR_FALLTHROUGH __fallthrough
#elif __GNUC__ >= 7
#define GR_FALLTHROUGH __attribute__ ((fallthrough))
#else
#define GR_FALLTHROUGH /* fallthrough */
#endif
#ifdef _MSC_VER
#pragma warning(disable: 4800)
#pragma warning(disable: 4355)
#endif
|