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294 lines
7.1 KiB
C++
294 lines
7.1 KiB
C++
/*
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* Copyright 2013 MongoDB, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "bson/bson-prelude.h"
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#ifndef BSON_MACROS_H
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#define BSON_MACROS_H
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#include <stdio.h>
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#ifdef __cplusplus
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#include <algorithm>
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#endif
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#include "bson/bson-config.h"
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#if BSON_OS == 1
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#define BSON_OS_UNIX
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#elif BSON_OS == 2
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#define BSON_OS_WIN32
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#else
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#error "Unknown operating system."
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#endif
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#ifdef __cplusplus
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#define BSON_BEGIN_DECLS extern "C" {
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#define BSON_END_DECLS }
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#else
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#define BSON_BEGIN_DECLS
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#define BSON_END_DECLS
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#endif
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#if defined(__GNUC__)
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#define BSON_GNUC_CHECK_VERSION(major, minor) \
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((__GNUC__ > (major)) || \
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((__GNUC__ == (major)) && (__GNUC_MINOR__ >= (minor))))
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#else
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#define BSON_GNUC_CHECK_VERSION(major, minor) 0
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#endif
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#if defined(__GNUC__)
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#define BSON_GNUC_IS_VERSION(major, minor) \
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((__GNUC__ == (major)) && (__GNUC_MINOR__ == (minor)))
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#else
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#define BSON_GNUC_IS_VERSION(major, minor) 0
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#endif
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/* Decorate public functions:
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* - if BSON_STATIC, we're compiling a program that uses libbson as a static
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* library, don't decorate functions
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* - else if BSON_COMPILATION, we're compiling a static or shared libbson, mark
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* public functions for export from the shared lib (which has no effect on
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* the static lib)
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* - else, we're compiling a program that uses libbson as a shared library,
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* mark public functions as DLL imports for Microsoft Visual C
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*/
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#ifdef _MSC_VER
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/*
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* Microsoft Visual C
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*/
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#ifdef BSON_STATIC
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#define BSON_API
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#elif defined(BSON_COMPILATION)
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#define BSON_API __declspec(dllexport)
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#else
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#define BSON_API __declspec(dllimport)
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#endif
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#define BSON_CALL __cdecl
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#elif defined(__GNUC__)
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/*
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* GCC
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*/
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#ifdef BSON_STATIC
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#define BSON_API
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#elif defined(BSON_COMPILATION)
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#define BSON_API __attribute__ ((visibility ("default")))
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#else
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#define BSON_API
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#endif
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#define BSON_CALL
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#else
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/*
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* Other compilers
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*/
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#define BSON_API
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#define BSON_CALL
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#endif
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#define BSON_EXPORT(type) BSON_API type BSON_CALL
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#ifdef MIN
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#define BSON_MIN MIN
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#elif defined(__cplusplus)
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#define BSON_MIN(a, b) ((std::min) (a, b))
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#elif defined(_MSC_VER)
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#define BSON_MIN(a, b) ((a) < (b) ? (a) : (b))
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#else
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#define BSON_MIN(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifdef MAX
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#define BSON_MAX MAX
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#elif defined(__cplusplus)
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#define BSON_MAX(a, b) ((std::max) (a, b))
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#elif defined(_MSC_VER)
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#define BSON_MAX(a, b) ((a) > (b) ? (a) : (b))
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#else
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#define BSON_MAX(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifdef ABS
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#define BSON_ABS ABS
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#else
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#define BSON_ABS(a) (((a) < 0) ? ((a) * -1) : (a))
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#endif
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#ifdef _MSC_VER
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#ifdef _WIN64
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#define BSON_ALIGN_OF_PTR 8
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#else
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#define BSON_ALIGN_OF_PTR 4
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#endif
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#else
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#define BSON_ALIGN_OF_PTR (sizeof (void *))
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#endif
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#ifdef BSON_EXTRA_ALIGN
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#if defined(_MSC_VER)
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#define BSON_ALIGNED_BEGIN(_N) __declspec(align (_N))
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#define BSON_ALIGNED_END(_N)
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#else
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#define BSON_ALIGNED_BEGIN(_N)
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#define BSON_ALIGNED_END(_N) __attribute__ ((aligned (_N)))
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#endif
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#else
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#if defined(_MSC_VER)
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#define BSON_ALIGNED_BEGIN(_N) __declspec(align (BSON_ALIGN_OF_PTR))
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#define BSON_ALIGNED_END(_N)
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#else
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#define BSON_ALIGNED_BEGIN(_N)
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#define BSON_ALIGNED_END(_N) \
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__attribute__ ( \
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(aligned ((_N) > BSON_ALIGN_OF_PTR ? BSON_ALIGN_OF_PTR : (_N))))
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#endif
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#endif
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#define bson_str_empty(s) (!s[0])
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#define bson_str_empty0(s) (!s || !s[0])
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#if defined(_WIN32)
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#define BSON_FUNC __FUNCTION__
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#elif defined(__STDC_VERSION__) && __STDC_VERSION__ < 199901L
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#define BSON_FUNC __FUNCTION__
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#else
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#define BSON_FUNC __func__
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#endif
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#define BSON_ASSERT(test) \
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do { \
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if (!(BSON_LIKELY (test))) { \
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fprintf (stderr, \
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"%s:%d %s(): precondition failed: %s\n", \
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__FILE__, \
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__LINE__, \
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BSON_FUNC, \
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#test); \
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abort (); \
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} \
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} while (0)
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/* obsolete macros, preserved for compatibility */
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#define BSON_STATIC_ASSERT(s) BSON_STATIC_ASSERT_ (s, __LINE__)
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#define BSON_STATIC_ASSERT_JOIN(a, b) BSON_STATIC_ASSERT_JOIN2 (a, b)
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#define BSON_STATIC_ASSERT_JOIN2(a, b) a##b
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#define BSON_STATIC_ASSERT_(s, l) \
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typedef char BSON_STATIC_ASSERT_JOIN (static_assert_test_, \
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__LINE__)[(s) ? 1 : -1]
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/* modern macros */
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#define BSON_STATIC_ASSERT2(_name, _s) \
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BSON_STATIC_ASSERT2_ (_s, __LINE__, _name)
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#define BSON_STATIC_ASSERT_JOIN3(_a, _b, _name) \
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BSON_STATIC_ASSERT_JOIN4 (_a, _b, _name)
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#define BSON_STATIC_ASSERT_JOIN4(_a, _b, _name) _a##_b##_name
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#define BSON_STATIC_ASSERT2_(_s, _l, _name) \
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typedef char BSON_STATIC_ASSERT_JOIN3 ( \
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static_assert_test_, __LINE__, _name)[(_s) ? 1 : -1]
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#if defined(__GNUC__)
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#define BSON_GNUC_PURE __attribute__ ((pure))
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#define BSON_GNUC_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
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#else
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#define BSON_GNUC_PURE
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#define BSON_GNUC_WARN_UNUSED_RESULT
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#endif
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#if BSON_GNUC_CHECK_VERSION(4, 0) && !defined(_WIN32)
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#define BSON_GNUC_NULL_TERMINATED __attribute__ ((sentinel))
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#define BSON_GNUC_INTERNAL __attribute__ ((visibility ("hidden")))
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#else
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#define BSON_GNUC_NULL_TERMINATED
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#define BSON_GNUC_INTERNAL
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#endif
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#if defined(__GNUC__)
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#define BSON_LIKELY(x) __builtin_expect (!!(x), 1)
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#define BSON_UNLIKELY(x) __builtin_expect (!!(x), 0)
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#else
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#define BSON_LIKELY(v) v
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#define BSON_UNLIKELY(v) v
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#endif
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#if defined(__clang__)
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#define BSON_GNUC_PRINTF(f, v) __attribute__ ((format (printf, f, v)))
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#elif BSON_GNUC_CHECK_VERSION(4, 4)
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#define BSON_GNUC_PRINTF(f, v) __attribute__ ((format (gnu_printf, f, v)))
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#else
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#define BSON_GNUC_PRINTF(f, v)
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#endif
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#if defined(__LP64__) || defined(_LP64)
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#define BSON_WORD_SIZE 64
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#else
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#define BSON_WORD_SIZE 32
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#endif
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#if defined(_MSC_VER)
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#define BSON_INLINE __inline
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#else
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#define BSON_INLINE __inline__
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#endif
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#ifdef _MSC_VER
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#define BSON_ENSURE_ARRAY_PARAM_SIZE(_n)
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#define BSON_TYPEOF decltype
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#else
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#define BSON_ENSURE_ARRAY_PARAM_SIZE(_n) static(_n)
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#define BSON_TYPEOF typeof
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#endif
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#if BSON_GNUC_CHECK_VERSION(3, 1)
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#define BSON_GNUC_DEPRECATED __attribute__ ((__deprecated__))
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#else
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#define BSON_GNUC_DEPRECATED
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#endif
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#if BSON_GNUC_CHECK_VERSION(4, 5)
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#define BSON_GNUC_DEPRECATED_FOR(f) \
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__attribute__ ((deprecated ("Use " #f " instead")))
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#else
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#define BSON_GNUC_DEPRECATED_FOR(f) BSON_GNUC_DEPRECATED
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#endif
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#endif /* BSON_MACROS_H */
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