Ykkrosh
c0a7a36f7a
Remove some unnecessary script-exposed functions, and move some more into the Engine namespace. This was SVN commit r8428.
133 lines
4.8 KiB
C++
133 lines
4.8 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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// (NativeWrapperDecls.h set up a lot of the macros we use here)
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// ScriptInterface_NativeWrapper<T>::call(cx, rval, fptr, args...) will call fptr(cbdata, args...),
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// and if T != void then it will store the result in rval:
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// Templated on the return type so void can be handled separately
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template <typename R>
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struct ScriptInterface_NativeWrapper {
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#define OVERLOADS(z, i, data) \
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template<TYPENAME_T0_HEAD(z,i) typename F> \
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static void call(JSContext* cx, jsval& rval, F fptr T0_A0(z,i)) { \
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rval = ScriptInterface::ToJSVal<R>(cx, fptr(ScriptInterface::GetCallbackData(cx) A0_TAIL(z,i))); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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};
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// Overloaded to ignore the return value from void functions
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template <>
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struct ScriptInterface_NativeWrapper<void> {
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#define OVERLOADS(z, i, data) \
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template<TYPENAME_T0_HEAD(z,i) typename F> \
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static void call(JSContext* cx, jsval& /*rval*/, F fptr T0_A0(z,i)) { \
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fptr(ScriptInterface::GetCallbackData(cx) A0_TAIL(z,i)); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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};
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// Same idea but for method calls:
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template <typename R, typename TC>
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struct ScriptInterface_NativeMethodWrapper {
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#define OVERLOADS(z, i, data) \
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template<TYPENAME_T0_HEAD(z,i) typename F> \
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static void call(JSContext* cx, jsval& rval, TC* c, F fptr T0_A0(z,i)) { \
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rval = ScriptInterface::ToJSVal<R>(cx, (c->*fptr)( A0(z,i) )); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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};
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template <typename TC>
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struct ScriptInterface_NativeMethodWrapper<void, TC> {
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#define OVERLOADS(z, i, data) \
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template<TYPENAME_T0_HEAD(z,i) typename F> \
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static void call(JSContext* /*cx*/, jsval& /*rval*/, TC* c, F fptr T0_A0(z,i)) { \
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(c->*fptr)( A0(z,i) ); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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};
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// Fast natives don't trigger the hook we use for profiling, so explicitly
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// notify the profiler when these functions are being called
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#if ENABLE_SCRIPT_PROFILING
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#define SCRIPT_PROFILE \
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debug_assert(JSVAL_IS_OBJECT(JS_CALLEE(cx, vp)) && JS_ObjectIsFunction(cx, JSVAL_TO_OBJECT(JS_CALLEE(cx, vp)))); \
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const char* name = JS_GetFunctionName(JS_ValueToFunction(cx, JS_CALLEE(cx, vp))); /* native function so ValueToFunction is safe; this makes unsafe lifetime assumptions */ \
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CProfileSampleScript profile(name);
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#else
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#define SCRIPT_PROFILE
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#endif
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// JSFastNative-compatible function that wraps the function identified in the template argument list
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#define OVERLOADS(z, i, data) \
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template <typename R, TYPENAME_T0_HEAD(z,i) R (*fptr) ( void* T0_TAIL(z,i) )> \
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JSBool ScriptInterface::call(JSContext* cx, uintN argc, jsval* vp) { \
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UNUSED2(argc); \
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SCRIPT_PROFILE \
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BOOST_PP_REPEAT_##z (i, CONVERT_ARG, ~) \
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jsval rval = JSVAL_VOID; \
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ScriptInterface_NativeWrapper<R>::call(cx, rval, fptr A0_TAIL(z,i)); \
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JS_SET_RVAL(cx, vp, rval); \
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return (ScriptInterface::IsExceptionPending(cx) ? JS_FALSE : JS_TRUE); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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// Same idea but for methods
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#define OVERLOADS(z, i, data) \
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template <typename R, TYPENAME_T0_HEAD(z,i) JSClass* CLS, typename TC, R (TC::*fptr) ( T0(z,i) )> \
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JSBool ScriptInterface::callMethod(JSContext* cx, uintN argc, jsval* vp) { \
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UNUSED2(argc); \
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SCRIPT_PROFILE \
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if (ScriptInterface::GetClass(cx, JS_THIS_OBJECT(cx, vp)) != CLS) return JS_FALSE; \
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TC* c = static_cast<TC*>(ScriptInterface::GetPrivate(cx, JS_THIS_OBJECT(cx, vp))); \
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if (! c) return JS_FALSE; \
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BOOST_PP_REPEAT_##z (i, CONVERT_ARG, ~) \
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jsval rval = JSVAL_VOID; \
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ScriptInterface_NativeMethodWrapper<R, TC>::call(cx, rval, c, fptr A0_TAIL(z,i)); \
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JS_SET_RVAL(cx, vp, rval); \
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return (ScriptInterface::IsExceptionPending(cx) ? JS_FALSE : JS_TRUE); \
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}
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BOOST_PP_REPEAT(SCRIPT_INTERFACE_MAX_ARGS, OVERLOADS, ~)
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#undef OVERLOADS
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// Clean up our mess
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#undef SCRIPT_PROFILE
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#undef NUMBERED_LIST_HEAD
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#undef NUMBERED_LIST_TAIL
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#undef NUMBERED_LIST_BALANCED
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#undef TYPED_ARGS
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#undef CONVERT_ARG
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#undef TYPENAME_T0_HEAD
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#undef TYPENAME_T0_TAIL
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#undef T0
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#undef T0_HEAD
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#undef T0_TAIL
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#undef T0_A0
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#undef A0
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#undef A0_TAIL
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