source/argumentstore.cpp

   1 #include <stdexcept>
   2 #include "argumentstore.h"
   3
   4 using namespace std;
   5
   6 namespace Msp {
   7 namespace DataFile {
   8
   9 ArgumentStore::ArgumentStore(const StatementInfo &n):
  10         info(n),
  11         store(new char[info.args_size])
  12 {
  13         for(unsigned i=0; i<info.key.signature.size(); ++i)
  14                 switch(info.key.signature[i])
  15                 {
  16                 case StringType::signature:
  17                         new(store+info.arg_offsets[i]) StringType::Store;
  18                         break;
  19                 case SymbolType::signature:
  20                         new(store+info.arg_offsets[i]) SymbolType::Store;
  21                         break;
  22                 }
  23 }
  24
  25 ArgumentStore::ArgumentStore(const ArgumentStore &other):
  26         info(other.info),
  27         store(new char[info.args_size])
  28 {
  29         copy_from(other.store);
  30 }
  31
  32 ArgumentStore &ArgumentStore::operator=(const ArgumentStore &other)
  33 {
  34         if(&other.info!=&info)
  35                 throw invalid_argument("ArgumentStore::operator=");
  36
  37         destroy();
  38         copy_from(other.store);
  39
  40         return *this;
  41 }
  42
  43 ArgumentStore::~ArgumentStore()
  44 {
  45         destroy();
  46 }
  47
  48 void ArgumentStore::destroy()
  49 {
  50         for(unsigned i=0; i<info.key.signature.size(); ++i)
  51                 switch(info.key.signature[i])
  52                 {
  53                 case StringType::signature:
  54                         reinterpret_cast<StringType::Store *>(store+info.arg_offsets[i])->~basic_string();
  55                         break;
  56                 case SymbolType::signature:
  57                         reinterpret_cast<SymbolType::Store *>(store+info.arg_offsets[i])->~Symbol();
  58                         break;
  59                 }
  60
  61         delete[] store;
  62 }
  63
  64 void ArgumentStore::copy_from(const char *other)
  65 {
  66         for(unsigned i=0; i<info.key.signature.size(); ++i)
  67                 switch(info.key.signature[i])
  68                 {
  69                 case StringType::signature:
  70                         new(store+info.arg_offsets[i]) StringType::Store(*reinterpret_cast<const StringType::Store *>(other+info.arg_offsets[i]));
  71                         break;
  72                 case SymbolType::signature:
  73                         new(store+info.arg_offsets[i]) SymbolType::Store(*reinterpret_cast<const SymbolType::Store *>(other+info.arg_offsets[i]));
  74                         break;
  75                 default:
  76                         copy(other+info.arg_offsets[i], other+(i+1<info.arg_offsets.size() ? info.arg_offsets[i+1] : info.args_size), store+info.arg_offsets[i]);
  77                         break;
  78                 }
  79 }
  80
  81 } // namespace DataFile
  82 } // namespace Msp