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  1. /** An old serializer utility.
  2.  
  3. Copyright: Denis Shelomovskij 2010
  4.  
  5. License: $(WEB boost.org/LICENSE_1_0.txt, Boost License 1.0).
  6.  
  7. Authors: Denis Shelomovskij
  8. */
  9. module serializer;
  10.  
  11. version(Win32)            static assert(real.sizeof == 10);
  12. else version(linux)        static assert(real.sizeof == 12);
  13. else                    static assert(0, "A new OS? Good!");
  14.  
  15. version(LittleEndian) { }
  16. else version(BigEndian)    static assert(0, "BigEndian? Good!");
  17. else                        static assert(0, "LittleEndian or BigEndian?!");
  18.  
  19. import std.file, std.stream, std.traits;
  20.  
  21.  
  22. ///Data serialization helper
  23. void serialize(T)(Stream s, in T t) {
  24.     SerializationStream!false(s).eat!T(t);
  25. }
  26.  
  27. ///ditto
  28. void deserialize(T)(Stream s, out T t) {
  29.     SerializationStream!true(s).eat!T(t);
  30. }
  31.  
  32. ///Data serialization helper
  33. void[] serialize(T)(in T t) {
  34.     scope s = new MemoryStream();
  35.     s.readable = false;
  36.     serialize(s, t);
  37.     return s.data();
  38. }
  39.  
  40. ///ditto
  41. void deserialize(T)(in void[] data, out T t) {
  42.     scope s = new MemoryStream(cast(ubyte[])data);
  43.     s.writeable = false;
  44.     deserialize(s, t);
  45. }
  46.  
  47. ///File serialization helper
  48. void serialize(T)(in string file, in T t) {
  49.     write(file, serialize(t));
  50. }
  51.  
  52. ///ditto
  53. void deserialize(T)(in string file, out T t) {
  54.     deserialize(read(file), t);
  55. }
  56.  
  57. private:
  58.  
  59. struct SerializationStream(bool read) {
  60.     const bool write = !read;
  61.     Stream stream;
  62.  
  63.     //int l=0;
  64.     void eat(T)(ref T t) {//char[] text;for(int i=0; i<l; ++i) text ~= '\t';
  65.         static assert(!is(T == union), "can't eat union");
  66.         static if(is(T == struct)) {
  67.             //msg(text~"+ struct "~T.stringof);++l;
  68.             static if(is(typeof(t.ownStreamProcess)))
  69.                 t.streamProcess(this);
  70.             else
  71.                 foreach(i, el; t.tupleof)
  72.                     eat!(typeof(el))(t.tupleof[i]);
  73.             //--l;msg(text~"- struct "~T.stringof, t);
  74.         } else static if(is(T == class)) {
  75.             //msg(text~"+ class "~T.stringof);++l;
  76.             bool isNull = t is null;
  77.             eat!bool(isNull);
  78.             if(isNull) {
  79.                 static if(read)
  80.                     t = null;
  81.             } else {
  82.                 static if(read)
  83.                     t = new T();
  84.                 static if(is(typeof(t.ownStreamProcess)))
  85.                     t.streamProcess(this);
  86.                 else
  87.                     foreach(i, el; t.tupleof)
  88.                         eat!(typeof(el))(t.tupleof[i]);
  89.             }
  90.             //msg(text~"- class "~T.stringof, t);
  91.         } else {
  92.             //D1: static assert(isAtomicType!(T) | is(T == enum), T.stringof);
  93.             static assert(__traits(isArithmetic, T), T.stringof);
  94.  
  95.             auto varr = cast(ubyte[])(&t)[0 .. 1];
  96.             static if(real.sizeof > 10 && is(T == real)) {
  97.                 const i = real.sizeof - 10;
  98.                 static if(write)
  99.                     assert(varr[10 .. real.sizeof] == (new ubyte[i]));
  100.                 else
  101.                     varr[10 .. real.sizeof] = 0;
  102.                 varr.length = 10;
  103.             }
  104.             static if(write)
  105.                 stream.write(varr);
  106.             else
  107.                 stream.read(varr);
  108.         }
  109.     }
  110.  
  111.     //Запоминаем, когда это массив длины 0, а когда null
  112.     void eat(T: T[])(ref T[] tarr) {
  113.         //msg(write ? "write" : "read", "[]", T.stringof);
  114.         int len;
  115.         static if(write) {
  116.             len = tarr is null ? -1 : tarr.length;
  117.             eat!int(len);
  118.             foreach(el; tarr)
  119.                 eat!(typeof(el))(el);
  120.         } else {
  121.             eat!int(len);
  122.             if(len == -1)
  123.                 tarr = null;
  124.             else if(len == 0)
  125.                 tarr = (cast(T*)"".ptr)[0..0];
  126.             else {
  127.                 tarr.length = len;
  128.                 foreach(ref el; tarr)
  129.                     eat!(typeof(el))(el);
  130.             }
  131.         }
  132.         //msg('\t', T.stringof, tarr);
  133.     }
  134.  
  135.     void eat(T: T[U], size_t U)(T[U] tarr) {
  136.         static if(write)
  137.             foreach(el; tarr)
  138.                 eat!(typeof(el))(el);
  139.         else
  140.             foreach(ref el; tarr)
  141.                 eat!(typeof(el))(el);
  142.     }
  143. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/../../../libphobos2.a(dmain2_2d2_1a5.o): In function `_D2rt6dmain24mainUiPPaZi7runMainMFZv':
src/rt/dmain2.d:(.text._D2rt6dmain24mainUiPPaZi7runMainMFZv+0x10): undefined reference to `_Dmain'
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/../../../libphobos2.a(deh2_2a9_525.o): In function `_D2rt4deh213__eh_finddataFPvZPS2rt4deh213DHandlerTable':
src/rt/deh2.d:(.text._D2rt4deh213__eh_finddataFPvZPS2rt4deh213DHandlerTable+0x4): undefined reference to `_deh_beg'
src/rt/deh2.d:(.text._D2rt4deh213__eh_finddataFPvZPS2rt4deh213DHandlerTable+0xc): undefined reference to `_deh_beg'
src/rt/deh2.d:(.text._D2rt4deh213__eh_finddataFPvZPS2rt4deh213DHandlerTable+0x13): undefined reference to `_deh_end'
src/rt/deh2.d:(.text._D2rt4deh213__eh_finddataFPvZPS2rt4deh213DHandlerTable+0x37): undefined reference to `_deh_end'
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/../../../libphobos2.a(thread_78_258.o): In function `_D4core6thread6Thread6__ctorMFZC4core6thread6Thread':
src/core/thread.d:(.text._D4core6thread6Thread6__ctorMFZC4core6thread6Thread+0x1d): undefined reference to `_tlsend'
src/core/thread.d:(.text._D4core6thread6Thread6__ctorMFZC4core6thread6Thread+0x24): undefined reference to `_tlsstart'
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/../../../libphobos2.a(thread_75_713.o): In function `thread_entryPoint':
src/core/thread.d:(.text.thread_entryPoint+0x4e): undefined reference to `_tlsstart'
src/core/thread.d:(.text.thread_entryPoint+0x57): undefined reference to `_tlsend'
collect2: ld returned 1 exit status
--- errorlevel 1
stdout
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Standard output is empty
https://ideone.com/cwNHv
language:
D (dmd 2.085.0)
created:
11 years ago
visibility:
public

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