1#ifndef _DEDEFS_HPP 2#define _DEDEFS_HPP 3/*------------------------------------------------------------------------- 4 * drawElements C++ Base Library 5 * ----------------------------- 6 * 7 * Copyright 2014 The Android Open Source Project 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 *//*! 22 * \file 23 * \brief Basic definitions. 24 *//*--------------------------------------------------------------------*/ 25 26#include "deDefs.h" 27 28#if !defined(__cplusplus) 29# error "C++ is required" 30#endif 31 32namespace de 33{ 34 35//!< Compute absolute value of x. 36template<typename T> inline T abs (T x) { return x < T(0) ? -x : x; } 37 38//!< Get minimum of x and y. 39template<typename T> inline T min (T x, T y) { return x <= y ? x : y; } 40 41//!< Get maximum of x and y. 42template<typename T> inline T max (T x, T y) { return x >= y ? x : y; } 43 44//!< Clamp x in range a <= x <= b. 45template<typename T> inline T clamp (T x, T a, T b) { DE_ASSERT(a <= b); return x < a ? a : (x > b ? b : x); } 46 47//!< Test if x is in bounds a <= x < b. 48template<typename T> inline bool inBounds (T x, T a, T b) { return a <= x && x < b; } 49 50//!< Test if x is in range a <= x <= b. 51template<typename T> inline bool inRange (T x, T a, T b) { return a <= x && x <= b; } 52 53//! Helper for DE_CHECK() macros. 54void throwRuntimeError (const char* message, const char* expr, const char* file, int line); 55 56//! Default deleter. 57template<typename T> struct DefaultDeleter 58{ 59 inline DefaultDeleter (void) {} 60 template<typename U> inline DefaultDeleter (const DefaultDeleter<U>&) {} 61 template<typename U> inline DefaultDeleter<T>& operator= (const DefaultDeleter<U>&) { return *this; } 62 inline void operator() (T* ptr) const { delete ptr; } 63}; 64 65//! A deleter for arrays 66template<typename T> struct ArrayDeleter 67{ 68 inline ArrayDeleter (void) {} 69 template<typename U> inline ArrayDeleter (const ArrayDeleter<U>&) {} 70 template<typename U> inline ArrayDeleter<T>& operator= (const ArrayDeleter<U>&) { return *this; } 71 inline void operator() (T* ptr) const { delete[] ptr; } 72}; 73 74//! Get an element of an array with a specified size. 75template <int Size, typename Elem> 76const Elem& getSizedArrayElement(const Elem (&array)[Size], int offset) 77{ 78 DE_ASSERT(inBounds(offset, 0, Size)); 79 return array[offset]; 80} 81 82} // de 83 84/*--------------------------------------------------------------------*//*! 85 * \brief Throw runtime error if condition is not met. 86 * \param X Condition to check. 87 * 88 * This macro throws std::runtime_error if condition X is not met. 89 *//*--------------------------------------------------------------------*/ 90#define DE_CHECK_RUNTIME_ERR(X) do { if ((!deGetFalse() && (X)) ? DE_FALSE : DE_TRUE) ::de::throwRuntimeError(DE_NULL, #X, __FILE__, __LINE__); } while(deGetFalse()) 91 92/*--------------------------------------------------------------------*//*! 93 * \brief Throw runtime error if condition is not met. 94 * \param X Condition to check. 95 * \param MSG Additional message to include in the exception. 96 * 97 * This macro throws std::runtime_error with message MSG if condition X is 98 * not met. 99 *//*--------------------------------------------------------------------*/ 100#define DE_CHECK_RUNTIME_ERR_MSG(X, MSG) do { if ((!deGetFalse() && (X)) ? DE_FALSE : DE_TRUE) ::de::throwRuntimeError(MSG, #X, __FILE__, __LINE__); } while(deGetFalse()) 101 102//! Get array start pointer. 103#define DE_ARRAY_BEGIN(ARR) (&(ARR)[0]) 104 105//! Get array end pointer. 106#define DE_ARRAY_END(ARR) (DE_ARRAY_BEGIN(ARR) + DE_LENGTH_OF_ARRAY(ARR)) 107 108//! Empty C++ compilation unit silencing. 109#if (DE_COMPILER == DE_COMPILER_MSC) 110# define DE_EMPTY_CPP_FILE namespace { deUint8 unused; } 111#else 112# define DE_EMPTY_CPP_FILE 113#endif 114 115#endif // _DEDEFS_HPP 116