summaryrefslogtreecommitdiffstats
path: root/gfx/graphite2/src/inc/Main.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/graphite2/src/inc/Main.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/graphite2/src/inc/Main.h')
-rw-r--r--gfx/graphite2/src/inc/Main.h199
1 files changed, 199 insertions, 0 deletions
diff --git a/gfx/graphite2/src/inc/Main.h b/gfx/graphite2/src/inc/Main.h
new file mode 100644
index 0000000000..ebf02dd553
--- /dev/null
+++ b/gfx/graphite2/src/inc/Main.h
@@ -0,0 +1,199 @@
+/* GRAPHITE2 LICENSING
+
+ Copyright 2010, SIL International
+ All rights reserved.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should also have received a copy of the GNU Lesser General Public
+ License along with this library in the file named "LICENSE".
+ If not, write to the Free Software Foundation, 51 Franklin Street,
+ Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
+ internet at http://www.fsf.org/licenses/lgpl.html.
+
+Alternatively, the contents of this file may be used under the terms of the
+Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
+License, as published by the Free Software Foundation, either version 2
+of the License or (at your option) any later version.
+*/
+#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