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Imported Upstream version 0.26.0

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Bret Curtis 2013-10-17 16:37:22 +02:00
commit 9a2b6c69b6
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76
components/interpreter/controlopcodes.hpp Normal file
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#ifndef INTERPRETER_CONTROLOPCODES_H_INCLUDED
#define INTERPRETER_CONTROLOPCODES_H_INCLUDED
#include <stdexcept>
#include "opcodes.hpp"
#include "runtime.hpp"
namespace Interpreter
{
class OpReturn : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
runtime.setPC (-1);
}
};
class OpSkipZero : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
Type_Integer data = runtime[0].mInteger;
runtime.pop();
if (data==0)
runtime.setPC (runtime.getPC()+1);
}
};
class OpSkipNonZero : public Opcode0
{
public:
virtual void execute (Runtime& runtime)
{
Type_Integer data = runtime[0].mInteger;
runtime.pop();
if (data!=0)
runtime.setPC (runtime.getPC()+1);
}
};
class OpJumpForward : public Opcode1
{
public:
virtual void execute (Runtime& runtime, unsigned int arg0)
{
if (arg0==0)
throw std::logic_error ("infinite loop");
runtime.setPC (runtime.getPC()+arg0-1);
}
};
class OpJumpBackward : public Opcode1
{
public:
virtual void execute (Runtime& runtime, unsigned int arg0)
{
if (arg0==0)
throw std::logic_error ("infinite loop");
runtime.setPC (runtime.getPC()-arg0-1);
}
};
}
#endif