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      1 
      2 /* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
      3  * written by Walter Bright
      4  * https://www.digitalmars.com
      5  * Distributed under the Boost Software License, Version 1.0.
      6  * https://www.boost.org/LICENSE_1_0.txt
      7  * https://github.com/dlang/dmd/blob/master/src/dmd/root/dcompat.h
      8  */
      9 
     10 #pragma once
     11 
     12 #include "dsystem.h"
     13 
     14 /// Represents a D [ ] array
     15 template<typename T>
     16 struct DArray
     17 {
     18     size_t length;
     19     T *ptr;
     20 
     21     DArray() : length(0), ptr(NULL) { }
     22 
     23     DArray(size_t length_in, T *ptr_in)
     24         : length(length_in), ptr(ptr_in) { }
     25 };
     26 
     27 struct DString : public DArray<const char>
     28 {
     29     DString() : DArray<const char>() { }
     30 
     31     DString(const char *ptr)
     32         : DArray<const char>(ptr ? strlen(ptr) : 0, ptr) { }
     33 
     34     DString(size_t length, const char *ptr)
     35         : DArray<const char>(length, ptr) { }
     36 };
     37 
     38 /// Corresponding C++ type that maps to D size_t
     39 #if __APPLE__ && __i386__
     40 // size_t is 'unsigned long', which makes it mangle differently than D's 'uint'
     41 typedef unsigned d_size_t;
     42 #elif MARS && DMD_VERSION >= 2079 && DMD_VERSION <= 2081 && \
     43         __APPLE__ && __SIZEOF_SIZE_T__ == 8
     44 // DMD versions between 2.079 and 2.081 mapped D ulong to uint64_t on OS X.
     45 typedef uint64_t d_size_t;
     46 #elif defined(__OpenBSD__) && !defined(__LP64__)
     47 // size_t is 'unsigned long', which makes it mangle differently than D's 'uint'
     48 typedef unsigned d_size_t;
     49 #else
     50 typedef size_t d_size_t;
     51 #endif
     52