forked from teamnwah/openmw-tes3coop
added variant class
Marc Zinnschlag
12 years ago
parent
3bd228f71b
commit
65081f5520
@ -0,0 +1,256 @@
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#include "variant.hpp"
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#include <cassert>
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#include <stdexcept>
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#include "esmreader.hpp"
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#include "variantimp.hpp"
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ESM::Variant::Variant() : mType (VT_None), mData (0) {}
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ESM::Variant::~Variant()
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{
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delete mData;
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}
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ESM::Variant& ESM::Variant::operator= (const Variant& variant)
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{
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if (&variant!=this)
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{
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VariantDataBase *newData = variant.mData ? variant.mData->clone() : 0;
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delete mData;
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mType = variant.mType;
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mData = newData;
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}
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return *this;
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}
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ESM::Variant::Variant (const Variant& variant)
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: mType (variant.mType), mData (variant.mData ? variant.mData->clone() : 0)
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{}
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ESM::VarType ESM::Variant::getType() const
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{
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return mType;
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}
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std::string ESM::Variant::toString() const
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{
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if (!mData)
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throw std::runtime_error ("can not convert empty variant to string");
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return mData->getString();
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}
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int ESM::Variant::getInteger() const
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{
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if (!mData)
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throw std::runtime_error ("can not convert empty variant to integer");
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return mData->getInteger();
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}
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float ESM::Variant::getFloat() const
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{
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if (!mData)
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throw std::runtime_error ("can not convert empty variant to float");
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return mData->getFloat();
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}
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void ESM::Variant::read (ESMReader& esm, Format format)
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{
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// type
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VarType type = VT_Unknown;
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if (format==Format_Global)
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{
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std::string typeId = esm.getHNString ("FNAM");
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if (typeId == "s")
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type = VT_Short;
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else if (typeId == "l")
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type = VT_Long;
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else if (typeId == "f")
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type = VT_Float;
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else
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esm.fail ("illegal global variable type " + typeId);
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}
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else // GMST
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{
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esm.getSubName();
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NAME name = esm.retSubName();
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if (name=="STRV")
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{
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type = VT_String;
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}
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else if (name=="INTV")
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{
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type = VT_Int;
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}
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else if (name=="FLTV")
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{
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type = VT_Float;
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}
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else
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esm.fail ("invalid subrecord: " + name.toString());
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}
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setType (type);
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// data
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if (mData)
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mData->read (esm, format, mType);
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}
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void ESM::Variant::write (ESMWriter& esm, Format format) const
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{
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if (mType==VT_Unknown)
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{
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throw std::runtime_error ("can not serialise variant of unknown type");
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}
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else if (mType==VT_None)
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{
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if (format==Format_Global)
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throw std::runtime_error ("can not serialise variant of type none to global format");
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// nothing to do here for GMST format
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}
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else
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mData->write (esm, format, mType);
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}
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void ESM::Variant::write (std::ostream& stream) const
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{
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switch (mType)
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{
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case VT_Unknown:
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stream << "variant unknown";
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break;
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case VT_None:
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stream << "variant none";
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break;
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case VT_Short:
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stream << "variant short: " << mData->getInteger();
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break;
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case VT_Int:
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stream << "variant int: " << mData->getInteger();
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break;
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case VT_Long:
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stream << "variant long: " << mData->getInteger();
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break;
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case VT_Float:
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stream << "variant float: " << mData->getFloat();
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break;
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case VT_String:
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stream << "variant string: \"" << mData->getString() << "\2";
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break;
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}
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}
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void ESM::Variant::setType (VarType type)
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{
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if (type!=mType)
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{
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VariantDataBase *newData = 0;
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switch (type)
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{
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case VT_Unknown:
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case VT_None:
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break; // no data
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case VT_Short:
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case VT_Int:
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case VT_Long:
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newData = new VariantIntegerData (mData);
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break;
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case VT_Float:
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newData = new VariantFloatData (mData);
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break;
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case VT_String:
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newData = new VariantStringData (mData);
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break;
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}
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delete mData;
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mData = newData;
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mType = type;
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}
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}
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void ESM::Variant::setString (const std::string& value)
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{
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if (!mData)
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throw std::runtime_error ("can not assign string to empty variant");
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mData->setString (value);
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}
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void ESM::Variant::setInteger (int value)
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{
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if (!mData)
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throw std::runtime_error ("can not assign integer to empty variant");
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mData->setInteger (value);
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}
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void ESM::Variant::setFloat (float value)
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{
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if (!mData)
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throw std::runtime_error ("can not assign float to empty variant");
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mData->setFloat (value);
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}
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bool ESM::Variant::isEqual (const Variant& value) const
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{
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if (mType!=value.mType)
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return false;
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if (!mData)
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return true;
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assert (value.mData);
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return mData->isEqual (*value.mData);
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}
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std::ostream& ESM::operator<< (std::ostream& stream, const Variant& value)
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{
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value.write (stream);
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return stream;
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}
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bool ESM::operator== (const Variant& left, const Variant& right)
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{
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return left.isEqual (right);
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}
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bool ESM::operator!= (const Variant& left, const Variant& right)
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{
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return !(left==right);
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}
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@ -0,0 +1,85 @@
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#ifndef OPENMW_ESM_VARIANT_H
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#define OPENMW_ESM_VARIANT_H
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#include <string>
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#include <iosfwd>
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namespace ESM
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{
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class ESMReader;
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class ESMWriter;
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enum VarType
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{
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VT_Unknown,
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VT_None,
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VT_Short, // stored as a float, kinda
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VT_Int,
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VT_Long, // stored as a float
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VT_Float,
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VT_String
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};
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class VariantDataBase;
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class Variant
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{
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VarType mType;
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VariantDataBase *mData;
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public:
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enum Format
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{
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Format_Global,
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Format_Gmst
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};
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Variant();
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~Variant();
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Variant& operator= (const Variant& variant);
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Variant (const Variant& variant);
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VarType getType() const;
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std::string toString() const;
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///< Will throw an exception, if value can not be represented as a string.
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int getInteger() const;
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///< Will throw an exception, if value can not be represented as an integer (implicit
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/// casting of float values is permitted).
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float getFloat() const;
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///< Will throw an exception, if value can not be represented as a float value.
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void read (ESMReader& esm, Format format);
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void write (ESMWriter& esm, Format format) const;
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void write (std::ostream& stream) const;
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///< Write in text format.
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void setType (VarType type);
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void setString (const std::string& value);
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///< Will throw an exception, if type is not compatible with string.
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void setInteger (int value);
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///< Will throw an exception, if type is not compatible with integer.
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void setFloat (float value);
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///< Will throw an exception, if type is not compatible with float.
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bool isEqual (const Variant& value) const;
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};
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std::ostream& operator<<(std::ostream& stream, const Variant& value);
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bool operator== (const Variant& left, const Variant& right);
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bool operator!= (const Variant& left, const Variant& right);
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}
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#endif
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@ -0,0 +1,262 @@
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#include "variantimp.hpp"
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#include <stdexcept>
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#include "esmreader.hpp"
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#include "esmwriter.hpp"
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ESM::VariantDataBase::~VariantDataBase() {}
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std::string ESM::VariantDataBase::getString (bool default_) const
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{
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if (default_)
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return "";
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throw std::runtime_error ("can not convert variant to string");
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}
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int ESM::VariantDataBase::getInteger (bool default_) const
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{
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if (default_)
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return 0;
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throw std::runtime_error ("can not convert variant to integer");
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}
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float ESM::VariantDataBase::getFloat (bool default_) const
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{
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if (default_)
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return 0;
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throw std::runtime_error ("can not convert variant to float");
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}
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void ESM::VariantDataBase::setString (const std::string& value)
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{
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throw std::runtime_error ("conversion of string to variant not possible");
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}
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void ESM::VariantDataBase::setInteger (int value)
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{
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throw std::runtime_error ("conversion of integer to variant not possible");
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}
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void ESM::VariantDataBase::setFloat (float value)
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{
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throw std::runtime_error ("conversion of float to variant not possible");
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}
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ESM::VariantStringData::VariantStringData (const VariantDataBase *data)
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{
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if (data)
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mValue = data->getString (true);
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}
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ESM::VariantDataBase *ESM::VariantStringData::clone() const
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{
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return new VariantStringData (*this);
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}
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std::string ESM::VariantStringData::getString (bool default_) const
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{
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return mValue;
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}
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void ESM::VariantStringData::setString (const std::string& value)
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{
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mValue = value;
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}
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void ESM::VariantStringData::read (ESMReader& esm, Variant::Format format, VarType type)
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{
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if (type!=VT_String)
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throw std::logic_error ("not a string type");
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if (format==Variant::Format_Global)
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esm.fail ("global variables of type string not supported");
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// GMST
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mValue = esm.getHString();
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}
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void ESM::VariantStringData::write (ESMWriter& esm, Variant::Format format, VarType type) const
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{
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if (type!=VT_String)
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throw std::logic_error ("not a string type");
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if (format==Variant::Format_Global)
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throw std::runtime_error ("global variables of type string not supported");
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// GMST
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esm.writeHNString ("STRV", mValue);
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}
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bool ESM::VariantStringData::isEqual (const VariantDataBase& value) const
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{
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return dynamic_cast<const VariantStringData&> (value).mValue==mValue;
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}
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ESM::VariantIntegerData::VariantIntegerData (const VariantDataBase *data) : mValue (0)
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{
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if (data)
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mValue = data->getInteger (true);
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}
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ESM::VariantDataBase *ESM::VariantIntegerData::clone() const
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{
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return new VariantIntegerData (*this);
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}
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int ESM::VariantIntegerData::getInteger (bool default_) const
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{
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return mValue;
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}
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float ESM::VariantIntegerData::getFloat (bool default_) const
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{
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return mValue;
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}
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void ESM::VariantIntegerData::setInteger (int value)
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{
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mValue = value;
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}
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void ESM::VariantIntegerData::setFloat (float value)
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{
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mValue = static_cast<int> (value);
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}
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void ESM::VariantIntegerData::read (ESMReader& esm, Variant::Format format, VarType type)
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{
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if (type!=VT_Short && type!=VT_Long && type!=VT_Int)
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throw std::logic_error ("not an integer type");
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if (format==Variant::Format_Global)
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{
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float value;
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esm.getHNT (value, "FLTV");
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if (type==VT_Short)
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{
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if (value!=value)
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mValue = 0; // nan
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else
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mValue = static_cast<short> (value);
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}
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else if (type==VT_Long)
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mValue = static_cast<int> (value);
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else
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esm.fail ("unsupported global variable integer type");
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}
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else // GMST
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{
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if (type==VT_Int)
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esm.fail ("unsupported global variable integer type");
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esm.getHT (mValue);
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}
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}
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void ESM::VariantIntegerData::write (ESMWriter& esm, Variant::Format format, VarType type) const
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{
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if (type!=VT_Short && type!=VT_Long && type!=VT_Int)
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throw std::logic_error ("not an integer type");
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if (format==Variant::Format_Global)
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{
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if (type==VT_Short || type==VT_Long)
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{
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float value = mValue;
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esm.writeHNString ("FNAM", type==VT_Short ? "s" : "l");
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esm.writeHNT ("FLTV", value);
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}
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else
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throw std::runtime_error ("unsupported global variable integer type");
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}
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else // GMST
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{
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if (type==VT_Int)
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throw std::runtime_error ("unsupported global variable integer type");
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esm.writeHNT ("INTV", mValue);
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}
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}
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bool ESM::VariantIntegerData::isEqual (const VariantDataBase& value) const
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{
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return dynamic_cast<const VariantIntegerData&> (value).mValue==mValue;
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}
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ESM::VariantFloatData::VariantFloatData (const VariantDataBase *data) : mValue (0)
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{
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if (data)
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mValue = data->getFloat (true);
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}
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ESM::VariantDataBase *ESM::VariantFloatData::clone() const
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{
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return new VariantFloatData (*this);
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}
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int ESM::VariantFloatData::getInteger (bool default_) const
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{
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return static_cast<int> (mValue);
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}
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float ESM::VariantFloatData::getFloat (bool default_) const
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{
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return mValue;
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}
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void ESM::VariantFloatData::setInteger (int value)
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{
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mValue = value;
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}
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void ESM::VariantFloatData::setFloat (float value)
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{
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mValue = value;
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}
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void ESM::VariantFloatData::read (ESMReader& esm, Variant::Format format, VarType type)
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{
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if (type!=VT_Float)
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throw std::logic_error ("not a float type");
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if (format==Variant::Format_Global)
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{
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esm.getHNT (mValue, "FLTV");
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}
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else // GMST
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{
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esm.getHT (mValue);
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}
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}
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void ESM::VariantFloatData::write (ESMWriter& esm, Variant::Format format, VarType type) const
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{
|
||||
if (type!=VT_Float)
|
||||
throw std::logic_error ("not a float type");
|
||||
|
||||
if (format==Variant::Format_Global)
|
||||
{
|
||||
esm.writeHNString ("FNAM", "f");
|
||||
esm.writeHNT ("FLTV", mValue);
|
||||
}
|
||||
else // GMST
|
||||
{
|
||||
esm.writeHNT ("INTV", mValue);
|
||||
}
|
||||
}
|
||||
|
||||
bool ESM::VariantFloatData::isEqual (const VariantDataBase& value) const
|
||||
{
|
||||
return dynamic_cast<const VariantFloatData&> (value).mValue==mValue;
|
||||
}
|
||||
@ -0,0 +1,179 @@
|
||||
#ifndef OPENMW_ESM_VARIANTIMP_H
|
||||
#define OPENMW_ESM_VARIANTIMP_H
|
||||
|
||||
#include <string>
|
||||
|
||||
#include "variant.hpp"
|
||||
|
||||
namespace ESM
|
||||
{
|
||||
class VariantDataBase
|
||||
{
|
||||
public:
|
||||
|
||||
virtual ~VariantDataBase();
|
||||
|
||||
virtual VariantDataBase *clone() const = 0;
|
||||
|
||||
virtual std::string getString (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as a string.
|
||||
///
|
||||
/// \note Numeric values are not converted to strings.
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual int getInteger (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as an integer (implicit
|
||||
/// casting of float values is permitted).
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual float getFloat (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as a float value.
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual void setString (const std::string& value);
|
||||
///< Will throw an exception, if type is not compatible with string.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual void setInteger (int value);
|
||||
///< Will throw an exception, if type is not compatible with integer.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual void setFloat (float value);
|
||||
///< Will throw an exception, if type is not compatible with float.
|
||||
///
|
||||
/// Default-implementation: throw an exception.
|
||||
|
||||
virtual void read (ESMReader& esm, Variant::Format format, VarType type) = 0;
|
||||
///< If \a type is not supported by \a format, an exception is thrown via ESMReader::fail
|
||||
|
||||
virtual void write (ESMWriter& esm, Variant::Format format, VarType type) const = 0;
|
||||
///< If \a type is not supported by \a format, an exception is thrown.
|
||||
|
||||
virtual bool isEqual (const VariantDataBase& value) const = 0;
|
||||
///< If the (C++) type of \a value does not match the type of *this, an exception is thrown.
|
||||
|
||||
};
|
||||
|
||||
class VariantStringData : public VariantDataBase
|
||||
{
|
||||
std::string mValue;
|
||||
|
||||
public:
|
||||
|
||||
VariantStringData (const VariantDataBase *data = 0);
|
||||
///< Calling the constructor with an incompatible data type will result in a silent
|
||||
/// default initialisation.
|
||||
|
||||
virtual VariantDataBase *clone() const;
|
||||
|
||||
virtual std::string getString (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as a string.
|
||||
///
|
||||
/// \note Numeric values are not converted to strings.
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
|
||||
virtual void setString (const std::string& value);
|
||||
///< Will throw an exception, if type is not compatible with string.
|
||||
|
||||
virtual void read (ESMReader& esm, Variant::Format format, VarType type);
|
||||
///< If \a type is not supported by \a format, an exception is thrown via ESMReader::fail
|
||||
|
||||
virtual void write (ESMWriter& esm, Variant::Format format, VarType type) const;
|
||||
///< If \a type is not supported by \a format, an exception is thrown.
|
||||
|
||||
virtual bool isEqual (const VariantDataBase& value) const;
|
||||
///< If the (C++) type of \a value does not match the type of *this, an exception is thrown.
|
||||
};
|
||||
|
||||
class VariantIntegerData : public VariantDataBase
|
||||
{
|
||||
int mValue;
|
||||
|
||||
public:
|
||||
|
||||
VariantIntegerData (const VariantDataBase *data = 0);
|
||||
///< Calling the constructor with an incompatible data type will result in a silent
|
||||
/// default initialisation.
|
||||
|
||||
virtual VariantDataBase *clone() const;
|
||||
|
||||
virtual int getInteger (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as an integer (implicit
|
||||
/// casting of float values is permitted).
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
|
||||
virtual float getFloat (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as a float value.
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
|
||||
virtual void setInteger (int value);
|
||||
///< Will throw an exception, if type is not compatible with integer.
|
||||
|
||||
virtual void setFloat (float value);
|
||||
///< Will throw an exception, if type is not compatible with float.
|
||||
|
||||
virtual void read (ESMReader& esm, Variant::Format format, VarType type);
|
||||
///< If \a type is not supported by \a format, an exception is thrown via ESMReader::fail
|
||||
|
||||
virtual void write (ESMWriter& esm, Variant::Format format, VarType type) const;
|
||||
///< If \a type is not supported by \a format, an exception is thrown.
|
||||
|
||||
virtual bool isEqual (const VariantDataBase& value) const;
|
||||
///< If the (C++) type of \a value does not match the type of *this, an exception is thrown.
|
||||
};
|
||||
|
||||
class VariantFloatData : public VariantDataBase
|
||||
{
|
||||
float mValue;
|
||||
|
||||
public:
|
||||
|
||||
VariantFloatData (const VariantDataBase *data = 0);
|
||||
///< Calling the constructor with an incompatible data type will result in a silent
|
||||
/// default initialisation.
|
||||
|
||||
virtual VariantDataBase *clone() const;
|
||||
|
||||
virtual int getInteger (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as an integer (implicit
|
||||
/// casting of float values is permitted).
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
|
||||
virtual float getFloat (bool default_ = false) const;
|
||||
///< Will throw an exception, if value can not be represented as a float value.
|
||||
///
|
||||
/// \param default_ Return a default value instead of throwing an exception.
|
||||
|
||||
virtual void setInteger (int value);
|
||||
///< Will throw an exception, if type is not compatible with integer.
|
||||
|
||||
virtual void setFloat (float value);
|
||||
///< Will throw an exception, if type is not compatible with float.
|
||||
|
||||
virtual void read (ESMReader& esm, Variant::Format format, VarType type);
|
||||
///< If \a type is not supported by \a format, an exception is thrown via ESMReader::fail
|
||||
|
||||
virtual void write (ESMWriter& esm, Variant::Format format, VarType type) const;
|
||||
///< If \a type is not supported by \a format, an exception is thrown.
|
||||
|
||||
virtual bool isEqual (const VariantDataBase& value) const;
|
||||
///< If the (C++) type of \a value does not match the type of *this, an exception is thrown.
|
||||
};
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue