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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef JRT_H
#define JRT_H
#include <stdio.h>
#include <string.h>
#include "jerryscript-core.h"
#include "jerryscript-port.h"
#include "config.h"
#include "jrt-types.h"
/*
* Constants
*/
#define JERRY_BITSINBYTE 8
/*
* Make sure unused parameters, variables, or expressions trigger no compiler warning.
*/
#define JERRY_UNUSED(x) ((void) (x))
#define JERRY_UNUSED_1(_1) JERRY_UNUSED (_1)
#define JERRY_UNUSED_2(_1, _2) JERRY_UNUSED (_1), JERRY_UNUSED_1 (_2)
#define JERRY_UNUSED_3(_1, _2, _3) JERRY_UNUSED (_1), JERRY_UNUSED_2 (_2, _3)
#define JERRY_UNUSED_4(_1, _2, _3, _4) JERRY_UNUSED (_1), JERRY_UNUSED_3 (_2, _3, _4)
#define JERRY_UNUSED_5(_1, _2, _3, _4, _5) JERRY_UNUSED (_1), JERRY_UNUSED_4 (_2, _3, _4, _5)
#define JERRY_UNUSED_6(_1, _2, _3, _4, _5, _6) JERRY_UNUSED (_1), JERRY_UNUSED_5 (_2, _3, _4, _5, _6)
#define JERRY_UNUSED_7(_1, _2, _3, _4, _5, _6, _7) JERRY_UNUSED (_1), JERRY_UNUSED_6 (_2, _3, _4, _5, _6, _7)
#define JERRY_UNUSED_8(_1, _2, _3, _4, _5, _6, _7, _8) JERRY_UNUSED (_1), JERRY_UNUSED_7 (_2, _3, _4, _5, _6, _7, _8)
#define JERRY_VA_ARGS_NUM_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, N, ...) N
#define JERRY_VA_ARGS_NUM(...) JERRY_VA_ARGS_NUM_IMPL (__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1, 0)
#define JERRY_UNUSED_ALL_IMPL_(nargs) JERRY_UNUSED_##nargs
#define JERRY_UNUSED_ALL_IMPL(nargs) JERRY_UNUSED_ALL_IMPL_ (nargs)
#define JERRY_UNUSED_ALL(...) JERRY_UNUSED_ALL_IMPL (JERRY_VA_ARGS_NUM (__VA_ARGS__)) (__VA_ARGS__)
/*
* Asserts
*
* Warning:
* Don't use JERRY_STATIC_ASSERT in headers, because
* __LINE__ may be the same for asserts in a header
* and in an implementation file.
*/
#define JERRY_STATIC_ASSERT_GLUE_(a, b, c) a##b##_##c
#define JERRY_STATIC_ASSERT_GLUE(a, b, c) JERRY_STATIC_ASSERT_GLUE_ (a, b, c)
#define JERRY_STATIC_ASSERT(x, msg) \
enum \
{ \
JERRY_STATIC_ASSERT_GLUE (static_assertion_failed_, __LINE__, msg) = 1 / (!!(x)) \
}
#ifndef JERRY_NDEBUG
void JERRY_ATTR_NORETURN jerry_assert_fail (const char *assertion,
const char *file,
const char *function,
const uint32_t line);
void JERRY_ATTR_NORETURN jerry_unreachable (const char *file, const char *function, const uint32_t line);
#define JERRY_ASSERT(x) \
do \
{ \
if (JERRY_UNLIKELY (!(x))) \
{ \
jerry_assert_fail (#x, __FILE__, __func__, __LINE__); \
} \
} while (0)
#define JERRY_UNREACHABLE() \
do \
{ \
jerry_unreachable (__FILE__, __func__, __LINE__); \
} while (0)
#else /* JERRY_NDEBUG */
#define JERRY_ASSERT(x) \
do \
{ \
if (false) \
{ \
JERRY_UNUSED (x); \
} \
} while (0)
#ifdef __GNUC__
#define JERRY_UNREACHABLE() __builtin_unreachable ()
#endif /* __GNUC__ */
#ifdef _MSC_VER
#define JERRY_UNREACHABLE() _assume (0)
#endif /* _MSC_VER */
#ifndef JERRY_UNREACHABLE
#define JERRY_UNREACHABLE()
#endif /* !JERRY_UNREACHABLE */
#endif /* !JERRY_NDEBUG */
/**
* Exit on fatal error
*/
void JERRY_ATTR_NORETURN jerry_fatal (jerry_fatal_code_t code);
jerry_log_level_t jerry_jrt_get_log_level (void);
void jerry_jrt_set_log_level (jerry_log_level_t level);
/*
* Logging
*/
#if JERRY_LOGGING
#define JERRY_ERROR_MSG(...) jerry_log (JERRY_LOG_LEVEL_ERROR, __VA_ARGS__)
#define JERRY_WARNING_MSG(...) jerry_log (JERRY_LOG_LEVEL_WARNING, __VA_ARGS__)
#define JERRY_DEBUG_MSG(...) jerry_log (JERRY_LOG_LEVEL_DEBUG, __VA_ARGS__)
#define JERRY_TRACE_MSG(...) jerry_log (JERRY_LOG_LEVEL_TRACE, __VA_ARGS__)
#else /* !JERRY_LOGGING */
#define JERRY_ERROR_MSG(...) \
do \
{ \
if (false) \
{ \
JERRY_UNUSED_ALL (__VA_ARGS__); \
} \
} while (0)
#define JERRY_WARNING_MSG(...) \
do \
{ \
if (false) \
{ \
JERRY_UNUSED_ALL (__VA_ARGS__); \
} \
} while (0)
#define JERRY_DEBUG_MSG(...) \
do \
{ \
if (false) \
{ \
JERRY_UNUSED_ALL (__VA_ARGS__); \
} \
} while (0)
#define JERRY_TRACE_MSG(...) \
do \
{ \
if (false) \
{ \
JERRY_UNUSED_ALL (__VA_ARGS__); \
} \
} while (0)
#endif /* JERRY_LOGGING */
/**
* Size of struct member
*/
#define JERRY_SIZE_OF_STRUCT_MEMBER(struct_name, member_name) sizeof (((struct_name *) NULL)->member_name)
/**
* Aligns @a value to @a alignment. @a must be the power of 2.
*
* Returns minimum positive value, that divides @a alignment and is more than or equal to @a value
*/
#define JERRY_ALIGNUP(value, alignment) (((value) + ((alignment) -1)) & ~((alignment) -1))
/**
* Align value down
*/
#define JERRY_ALIGNDOWN(value, alignment) ((value) & ~((alignment) -1))
/*
* min, max
*/
#define JERRY_MIN(v1, v2) (((v1) < (v2)) ? (v1) : (v2))
#define JERRY_MAX(v1, v2) (((v1) < (v2)) ? (v2) : (v1))
/**
* Calculate the index of the first non-zero bit of a 32 bit integer value
*/
#define JERRY__LOG2_1(n) (((n) >= 2) ? 1 : 0)
#define JERRY__LOG2_2(n) (((n) >= 1 << 2) ? (2 + JERRY__LOG2_1 ((n) >> 2)) : JERRY__LOG2_1 (n))
#define JERRY__LOG2_4(n) (((n) >= 1 << 4) ? (4 + JERRY__LOG2_2 ((n) >> 4)) : JERRY__LOG2_2 (n))
#define JERRY__LOG2_8(n) (((n) >= 1 << 8) ? (8 + JERRY__LOG2_4 ((n) >> 8)) : JERRY__LOG2_4 (n))
#define JERRY_LOG2(n) (((n) >= 1 << 16) ? (16 + JERRY__LOG2_8 ((n) >> 16)) : JERRY__LOG2_8 (n))
/**
* JERRY_BLOCK_TAIL_CALL_OPTIMIZATION
*
* Adapted from abseil ( https://github.com/abseil/ )
*
* Instructs the compiler to avoid optimizing tail-call recursion. This macro is
* useful when you wish to preserve the existing function order within a stack
* trace for logging, debugging, or profiling purposes.
*
* Example:
*
* int f() {
* int result = g();
* JERRY_BLOCK_TAIL_CALL_OPTIMIZATION();
* return result;
* }
*
* This macro is intentionally here as jerryscript-compiler.h is a public header and
* it does not make sense to expose this macro to the public.
*/
#if defined(__clang__) || defined(__GNUC__)
/* Clang/GCC will not tail call given inline volatile assembly. */
#define JERRY_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__ ("")
#else /* !defined(__clang__) && !defined(__GNUC__) */
/* On GCC 10.x this version also works. */
#define JERRY_BLOCK_TAIL_CALL_OPTIMIZATION() \
do \
{ \
JERRY_CONTEXT (status_flags) |= ECMA_STATUS_API_ENABLED; \
} while (0)
#endif /* defined(__clang__) || defined (__GNUC__) */
#endif /* !JRT_H */
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