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code.h
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27 
28 #ifndef V8_CODE_H_
29 #define V8_CODE_H_
30 
31 #include "allocation.h"
32 
33 namespace v8 {
34 namespace internal {
35 
36 
37 // Wrapper class for passing expected and actual parameter counts as
38 // either registers or immediate values. Used to make sure that the
39 // caller provides exactly the expected number of parameters to the
40 // callee.
41 class ParameterCount BASE_EMBEDDED {
42  public:
43  explicit ParameterCount(Register reg)
44  : reg_(reg), immediate_(0) { }
45  explicit ParameterCount(int immediate)
46  : reg_(no_reg), immediate_(immediate) { }
47 
48  bool is_reg() const { return !reg_.is(no_reg); }
49  bool is_immediate() const { return !is_reg(); }
50 
51  Register reg() const {
52  ASSERT(is_reg());
53  return reg_;
54  }
55  int immediate() const {
56  ASSERT(is_immediate());
57  return immediate_;
58  }
59 
60  private:
61  const Register reg_;
62  const int immediate_;
63 
64  DISALLOW_IMPLICIT_CONSTRUCTORS(ParameterCount);
65 };
66 
67 
68 } } // namespace v8::internal
69 
70 #endif // V8_CODE_H_
#define ASSERT(condition)
Definition: checks.h:270
int immediate() const
Definition: code.h:55
ParameterCount(Register reg)
Definition: code.h:43
#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName)
Definition: globals.h:318
bool is_reg() const
Definition: code.h:48
#define BASE_EMBEDDED
Definition: allocation.h:68
Register reg() const
Definition: code.h:51
ParameterCount(int immediate)
Definition: code.h:45
bool is_immediate() const
Definition: code.h:49
const Register no_reg