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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* Copyright (C) 2009 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
// (NativeWrapperDecls.h set up a lot of the macros we use here)
// ScriptInterface_NativeWrapper<T>::call(cx, rval, fptr, args...) will call fptr(cbdata, args...),
// and if T != void then it will store the result in rval:
// Templated on the return type so void can be handled separately
template <typename R>
struct ScriptInterface_NativeWrapper {
#define OVERLOADS(z, i, data) \
template<TYPENAME_T0_HEAD(z,i) typename F> \
static void call(JSContext* cx, jsval& rval, F fptr T0_A0(z,i)) { \
rval = ScriptInterface::ToJSVal<R>(cx, fptr(ScriptInterface::GetCallbackData(cx) A0_TAIL(z,i))); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
};
// Overloaded to ignore the return value from void functions
template <>
struct ScriptInterface_NativeWrapper<void> {
#define OVERLOADS(z, i, data) \
template<TYPENAME_T0_HEAD(z,i) typename F> \
static void call(JSContext* cx, jsval& /*rval*/, F fptr T0_A0(z,i)) { \
fptr(ScriptInterface::GetCallbackData(cx) A0_TAIL(z,i)); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
};
// Same idea but for method calls:
template <typename R, typename TC>
struct ScriptInterface_NativeMethodWrapper {
#define OVERLOADS(z, i, data) \
template<TYPENAME_T0_HEAD(z,i) typename F> \
static void call(JSContext* cx, jsval& rval, TC* c, F fptr T0_A0(z,i)) { \
rval = ScriptInterface::ToJSVal<R>(cx, (c->*fptr)( A0(z,i) )); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
};
template <typename TC>
struct ScriptInterface_NativeMethodWrapper<void, TC> {
#define OVERLOADS(z, i, data) \
template<TYPENAME_T0_HEAD(z,i) typename F> \
static void call(JSContext* /*cx*/, jsval& /*rval*/, TC* c, F fptr T0_A0(z,i)) { \
(c->*fptr)( A0(z,i) ); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
};
// Fast natives don't trigger the hook we use for profiling, so explicitly
// notify the profiler when these functions are being called.
// ScriptInterface_impl::Register stores the name in a reserved slot.
// (TODO: this doesn't work for functions registered via InterfaceScripted.h.
// Maybe we should do some interned JS_GetFunctionId thing.)
#if ENABLE_SCRIPT_PROFILING
#define SCRIPT_PROFILE \
ENSURE(JSVAL_IS_OBJECT(JS_CALLEE(cx, vp)) && JS_ObjectIsFunction(cx, JSVAL_TO_OBJECT(JS_CALLEE(cx, vp)))); \
const char* name = "(unknown)"; \
jsval nameval; \
if (JS_GetReservedSlot(cx, JSVAL_TO_OBJECT(JS_CALLEE(cx, vp)), 0, &nameval) \
&& !JSVAL_IS_VOID(nameval)) \
name = static_cast<const char*>(JSVAL_TO_PRIVATE(nameval)); \
CProfileSampleScript profile(name);
#else
#define SCRIPT_PROFILE
#endif
// JSFastNative-compatible function that wraps the function identified in the template argument list
#define OVERLOADS(z, i, data) \
template <typename R, TYPENAME_T0_HEAD(z,i) R (*fptr) ( void* T0_TAIL(z,i) )> \
JSBool ScriptInterface::call(JSContext* cx, uintN argc, jsval* vp) { \
UNUSED2(argc); \
SCRIPT_PROFILE \
BOOST_PP_REPEAT_##z (i, CONVERT_ARG, ~) \
jsval rval = JSVAL_VOID; \
ScriptInterface_NativeWrapper<R>::call(cx, rval, fptr A0_TAIL(z,i)); \
JS_SET_RVAL(cx, vp, rval); \
return (ScriptInterface::IsExceptionPending(cx) ? JS_FALSE : JS_TRUE); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
// Same idea but for methods
#define OVERLOADS(z, i, data) \
template <typename R, TYPENAME_T0_HEAD(z,i) JSClass* CLS, typename TC, R (TC::*fptr) ( T0(z,i) )> \
JSBool ScriptInterface::callMethod(JSContext* cx, uintN argc, jsval* vp) { \
UNUSED2(argc); \
SCRIPT_PROFILE \
if (ScriptInterface::GetClass(cx, JS_THIS_OBJECT(cx, vp)) != CLS) return JS_FALSE; \
TC* c = static_cast<TC*>(ScriptInterface::GetPrivate(cx, JS_THIS_OBJECT(cx, vp))); \
if (! c) return JS_FALSE; \
BOOST_PP_REPEAT_##z (i, CONVERT_ARG, ~) \
jsval rval = JSVAL_VOID; \
ScriptInterface_NativeMethodWrapper<R, TC>::call(cx, rval, c, fptr A0_TAIL(z,i)); \
JS_SET_RVAL(cx, vp, rval); \
return (ScriptInterface::IsExceptionPending(cx) ? JS_FALSE : JS_TRUE); \
}
BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
#undef OVERLOADS
// Clean up our mess
#undef SCRIPT_PROFILE
#undef NUMBERED_LIST_HEAD
#undef NUMBERED_LIST_TAIL
#undef NUMBERED_LIST_BALANCED
#undef TYPED_ARGS
#undef CONVERT_ARG
#undef TYPENAME_T0_HEAD
#undef TYPENAME_T0_TAIL
#undef T0
#undef T0_HEAD
#undef T0_TAIL
#undef T0_A0
#undef A0
#undef A0_TAIL
|
