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openmw-tes3coop/components/interpreter/mathopcodes.hpp

113 lines
2.7 KiB
C++

#ifndef INTERPRETER_MATHOPCODES_H_INCLUDED
#define INTERPRETER_MATHOPCODES_H_INCLUDED
#include <stdexcept>
#include <cmath>
#include "opcodes.hpp"
#include "runtime.hpp"
namespace Interpreter
{
template<typename T>
class OpAddInt : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
T result = getData<T> (runtime[1]) + getData<T> (runtime[0]);
runtime.pop();
getData<T> (runtime[0]) = result;
}
};
template<typename T>
class OpSubInt : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
T result = getData<T> (runtime[1]) - getData<T> (runtime[0]);
runtime.pop();
getData<T> (runtime[0]) = result;
}
};
template<typename T>
class OpMulInt : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
T result = getData<T> (runtime[1]) * getData<T> (runtime[0]);
runtime.pop();
getData<T> (runtime[0]) = result;
}
};
template<typename T>
class OpDivInt : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
T left = getData<T> (runtime[0]);
if (left==0)
throw std::runtime_error ("division by zero");
T result = getData<T> (runtime[1]) / left;
runtime.pop();
getData<T> (runtime[0]) = result;
}
};
class OpSquareRoot : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
Type_Float value = runtime[0].mFloat;
if (value<0)
throw std::runtime_error (
"square root of negative number (we aren't that imaginary)");
value = std::sqrt (value);
runtime[0].mFloat = value;
}
};
template<typename T, typename C>
class OpCompare : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
int result = C() (getData<T> (runtime[1]), getData<T> (runtime[0]));
runtime.pop();
runtime[0].mInteger = result;
}
};
}
#endif