1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
#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:
void execute(Runtime& runtime) override { runtime.setPC(-1); }
};
class OpSkipZero : public Opcode0
{
public:
void execute(Runtime& runtime) override
{
Type_Integer data = runtime[0].mInteger;
runtime.pop();
if (data == 0)
runtime.setPC(runtime.getPC() + 1);
}
};
class OpSkipNonZero : public Opcode0
{
public:
void execute(Runtime& runtime) override
{
Type_Integer data = runtime[0].mInteger;
runtime.pop();
if (data != 0)
runtime.setPC(runtime.getPC() + 1);
}
};
class OpJumpForward : public Opcode1
{
public:
void execute(Runtime& runtime, unsigned int arg0) override
{
if (arg0 == 0)
throw std::logic_error("infinite loop");
runtime.setPC(runtime.getPC() + arg0 - 1);
}
};
class OpJumpBackward : public Opcode1
{
public:
void execute(Runtime& runtime, unsigned int arg0) override
{
if (arg0 == 0)
throw std::logic_error("infinite loop");
runtime.setPC(runtime.getPC() - arg0 - 1);
}
};
}
#endif
|
