--- /dev/null
+/*
+** Inline definitions for handlers.h, which are particularly long and a bit
+** tricky.
+*/
+
+#ifndef UPB_HANDLERS_INL_H_
+#define UPB_HANDLERS_INL_H_
+
+#include <limits.h>
+#include <stddef.h>
+#include "upb/handlers.h"
+
+#include "upb/port_def.inc"
+
+#ifdef __cplusplus
+
+/* Type detection and typedefs for integer types.
+ * For platforms where there are multiple 32-bit or 64-bit types, we need to be
+ * able to enumerate them so we can properly create overloads for all variants.
+ *
+ * If any platform existed where there were three integer types with the same
+ * size, this would have to become more complicated. For example, short, int,
+ * and long could all be 32-bits. Even more diabolically, short, int, long,
+ * and long long could all be 64 bits and still be standard-compliant.
+ * However, few platforms are this strange, and it's unlikely that upb will be
+ * used on the strangest ones. */
+
+/* Can't count on stdint.h limits like INT32_MAX, because in C++ these are
+ * only defined when __STDC_LIMIT_MACROS are defined before the *first* include
+ * of stdint.h. We can't guarantee that someone else didn't include these first
+ * without defining __STDC_LIMIT_MACROS. */
+#define UPB_INT32_MAX 0x7fffffffLL
+#define UPB_INT32_MIN (-UPB_INT32_MAX - 1)
+#define UPB_INT64_MAX 0x7fffffffffffffffLL
+#define UPB_INT64_MIN (-UPB_INT64_MAX - 1)
+
+#if INT_MAX == UPB_INT32_MAX && INT_MIN == UPB_INT32_MIN
+#define UPB_INT_IS_32BITS 1
+#endif
+
+#if LONG_MAX == UPB_INT32_MAX && LONG_MIN == UPB_INT32_MIN
+#define UPB_LONG_IS_32BITS 1
+#endif
+
+#if LONG_MAX == UPB_INT64_MAX && LONG_MIN == UPB_INT64_MIN
+#define UPB_LONG_IS_64BITS 1
+#endif
+
+#if LLONG_MAX == UPB_INT64_MAX && LLONG_MIN == UPB_INT64_MIN
+#define UPB_LLONG_IS_64BITS 1
+#endif
+
+/* We use macros instead of typedefs so we can undefine them later and avoid
+ * leaking them outside this header file. */
+#if UPB_INT_IS_32BITS
+#define UPB_INT32_T int
+#define UPB_UINT32_T unsigned int
+
+#if UPB_LONG_IS_32BITS
+#define UPB_TWO_32BIT_TYPES 1
+#define UPB_INT32ALT_T long
+#define UPB_UINT32ALT_T unsigned long
+#endif /* UPB_LONG_IS_32BITS */
+
+#elif UPB_LONG_IS_32BITS /* && !UPB_INT_IS_32BITS */
+#define UPB_INT32_T long
+#define UPB_UINT32_T unsigned long
+#endif /* UPB_INT_IS_32BITS */
+
+
+#if UPB_LONG_IS_64BITS
+#define UPB_INT64_T long
+#define UPB_UINT64_T unsigned long
+
+#if UPB_LLONG_IS_64BITS
+#define UPB_TWO_64BIT_TYPES 1
+#define UPB_INT64ALT_T long long
+#define UPB_UINT64ALT_T unsigned long long
+#endif /* UPB_LLONG_IS_64BITS */
+
+#elif UPB_LLONG_IS_64BITS /* && !UPB_LONG_IS_64BITS */
+#define UPB_INT64_T long long
+#define UPB_UINT64_T unsigned long long
+#endif /* UPB_LONG_IS_64BITS */
+
+#undef UPB_INT32_MAX
+#undef UPB_INT32_MIN
+#undef UPB_INT64_MAX
+#undef UPB_INT64_MIN
+#undef UPB_INT_IS_32BITS
+#undef UPB_LONG_IS_32BITS
+#undef UPB_LONG_IS_64BITS
+#undef UPB_LLONG_IS_64BITS
+
+
+namespace upb {
+
+typedef void CleanupFunc(void *ptr);
+
+/* Template to remove "const" from "const T*" and just return "T*".
+ *
+ * We define a nonsense default because otherwise it will fail to instantiate as
+ * a function parameter type even in cases where we don't expect any caller to
+ * actually match the overload. */
+class CouldntRemoveConst {};
+template <class T> struct remove_constptr { typedef CouldntRemoveConst type; };
+template <class T> struct remove_constptr<const T *> { typedef T *type; };
+
+/* Template that we use below to remove a template specialization from
+ * consideration if it matches a specific type. */
+template <class T, class U> struct disable_if_same { typedef void Type; };
+template <class T> struct disable_if_same<T, T> {};
+
+template <class T> void DeletePointer(void *p) { delete static_cast<T>(p); }
+
+template <class T1, class T2>
+struct FirstUnlessVoidOrBool {
+ typedef T1 value;
+};
+
+template <class T2>
+struct FirstUnlessVoidOrBool<void, T2> {
+ typedef T2 value;
+};
+
+template <class T2>
+struct FirstUnlessVoidOrBool<bool, T2> {
+ typedef T2 value;
+};
+
+template<class T, class U>
+struct is_same {
+ static bool value;
+};
+
+template<class T>
+struct is_same<T, T> {
+ static bool value;
+};
+
+template<class T, class U>
+bool is_same<T, U>::value = false;
+
+template<class T>
+bool is_same<T, T>::value = true;
+
+/* FuncInfo *******************************************************************/
+
+/* Info about the user's original, pre-wrapped function. */
+template <class C, class R = void>
+struct FuncInfo {
+ /* The type of the closure that the function takes (its first param). */
+ typedef C Closure;
+
+ /* The return type. */
+ typedef R Return;
+};
+
+/* Func ***********************************************************************/
+
+/* Func1, Func2, Func3: Template classes representing a function and its
+ * signature.
+ *
+ * Since the function is a template parameter, calling the function can be
+ * inlined at compile-time and does not require a function pointer at runtime.
+ * These functions are not bound to a handler data so have no data or cleanup
+ * handler. */
+struct UnboundFunc {
+ CleanupFunc *GetCleanup() { return nullptr; }
+ void *GetData() { return nullptr; }
+};
+
+template <class R, class P1, R F(P1), class I>
+struct Func1 : public UnboundFunc {
+ typedef R Return;
+ typedef I FuncInfo;
+ static R Call(P1 p1) { return F(p1); }
+};
+
+template <class R, class P1, class P2, R F(P1, P2), class I>
+struct Func2 : public UnboundFunc {
+ typedef R Return;
+ typedef I FuncInfo;
+ static R Call(P1 p1, P2 p2) { return F(p1, p2); }
+};
+
+template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I>
+struct Func3 : public UnboundFunc {
+ typedef R Return;
+ typedef I FuncInfo;
+ static R Call(P1 p1, P2 p2, P3 p3) { return F(p1, p2, p3); }
+};
+
+template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4),
+ class I>
+struct Func4 : public UnboundFunc {
+ typedef R Return;
+ typedef I FuncInfo;
+ static R Call(P1 p1, P2 p2, P3 p3, P4 p4) { return F(p1, p2, p3, p4); }
+};
+
+template <class R, class P1, class P2, class P3, class P4, class P5,
+ R F(P1, P2, P3, P4, P5), class I>
+struct Func5 : public UnboundFunc {
+ typedef R Return;
+ typedef I FuncInfo;
+ static R Call(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
+ return F(p1, p2, p3, p4, p5);
+ }
+};
+
+/* BoundFunc ******************************************************************/
+
+/* BoundFunc2, BoundFunc3: Like Func2/Func3 except also contains a value that
+ * shall be bound to the function's second parameter.
+ *
+ * Note that the second parameter is a const pointer, but our stored bound value
+ * is non-const so we can free it when the handlers are destroyed. */
+template <class T>
+struct BoundFunc {
+ typedef typename remove_constptr<T>::type MutableP2;
+ explicit BoundFunc(MutableP2 data_) : data(data_) {}
+ CleanupFunc *GetCleanup() { return &DeletePointer<MutableP2>; }
+ MutableP2 GetData() { return data; }
+ MutableP2 data;
+};
+
+template <class R, class P1, class P2, R F(P1, P2), class I>
+struct BoundFunc2 : public BoundFunc<P2> {
+ typedef BoundFunc<P2> Base;
+ typedef I FuncInfo;
+ explicit BoundFunc2(typename Base::MutableP2 arg) : Base(arg) {}
+};
+
+template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I>
+struct BoundFunc3 : public BoundFunc<P2> {
+ typedef BoundFunc<P2> Base;
+ typedef I FuncInfo;
+ explicit BoundFunc3(typename Base::MutableP2 arg) : Base(arg) {}
+};
+
+template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4),
+ class I>
+struct BoundFunc4 : public BoundFunc<P2> {
+ typedef BoundFunc<P2> Base;
+ typedef I FuncInfo;
+ explicit BoundFunc4(typename Base::MutableP2 arg) : Base(arg) {}
+};
+
+template <class R, class P1, class P2, class P3, class P4, class P5,
+ R F(P1, P2, P3, P4, P5), class I>
+struct BoundFunc5 : public BoundFunc<P2> {
+ typedef BoundFunc<P2> Base;
+ typedef I FuncInfo;
+ explicit BoundFunc5(typename Base::MutableP2 arg) : Base(arg) {}
+};
+
+/* FuncSig ********************************************************************/
+
+/* FuncSig1, FuncSig2, FuncSig3: template classes reflecting a function
+ * *signature*, but without a specific function attached.
+ *
+ * These classes contain member functions that can be invoked with a
+ * specific function to return a Func/BoundFunc class. */
+template <class R, class P1>
+struct FuncSig1 {
+ template <R F(P1)>
+ Func1<R, P1, F, FuncInfo<P1, R> > GetFunc() {
+ return Func1<R, P1, F, FuncInfo<P1, R> >();
+ }
+};
+
+template <class R, class P1, class P2>
+struct FuncSig2 {
+ template <R F(P1, P2)>
+ Func2<R, P1, P2, F, FuncInfo<P1, R> > GetFunc() {
+ return Func2<R, P1, P2, F, FuncInfo<P1, R> >();
+ }
+
+ template <R F(P1, P2)>
+ BoundFunc2<R, P1, P2, F, FuncInfo<P1, R> > GetFunc(
+ typename remove_constptr<P2>::type param2) {
+ return BoundFunc2<R, P1, P2, F, FuncInfo<P1, R> >(param2);
+ }
+};
+
+template <class R, class P1, class P2, class P3>
+struct FuncSig3 {
+ template <R F(P1, P2, P3)>
+ Func3<R, P1, P2, P3, F, FuncInfo<P1, R> > GetFunc() {
+ return Func3<R, P1, P2, P3, F, FuncInfo<P1, R> >();
+ }
+
+ template <R F(P1, P2, P3)>
+ BoundFunc3<R, P1, P2, P3, F, FuncInfo<P1, R> > GetFunc(
+ typename remove_constptr<P2>::type param2) {
+ return BoundFunc3<R, P1, P2, P3, F, FuncInfo<P1, R> >(param2);
+ }
+};
+
+template <class R, class P1, class P2, class P3, class P4>
+struct FuncSig4 {
+ template <R F(P1, P2, P3, P4)>
+ Func4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> > GetFunc() {
+ return Func4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> >();
+ }
+
+ template <R F(P1, P2, P3, P4)>
+ BoundFunc4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> > GetFunc(
+ typename remove_constptr<P2>::type param2) {
+ return BoundFunc4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> >(param2);
+ }
+};
+
+template <class R, class P1, class P2, class P3, class P4, class P5>
+struct FuncSig5 {
+ template <R F(P1, P2, P3, P4, P5)>
+ Func5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> > GetFunc() {
+ return Func5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> >();
+ }
+
+ template <R F(P1, P2, P3, P4, P5)>
+ BoundFunc5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> > GetFunc(
+ typename remove_constptr<P2>::type param2) {
+ return BoundFunc5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> >(param2);
+ }
+};
+
+/* Overloaded template function that can construct the appropriate FuncSig*
+ * class given a function pointer by deducing the template parameters. */
+template <class R, class P1>
+inline FuncSig1<R, P1> MatchFunc(R (*f)(P1)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return FuncSig1<R, P1>();
+}
+
+template <class R, class P1, class P2>
+inline FuncSig2<R, P1, P2> MatchFunc(R (*f)(P1, P2)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return FuncSig2<R, P1, P2>();
+}
+
+template <class R, class P1, class P2, class P3>
+inline FuncSig3<R, P1, P2, P3> MatchFunc(R (*f)(P1, P2, P3)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return FuncSig3<R, P1, P2, P3>();
+}
+
+template <class R, class P1, class P2, class P3, class P4>
+inline FuncSig4<R, P1, P2, P3, P4> MatchFunc(R (*f)(P1, P2, P3, P4)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return FuncSig4<R, P1, P2, P3, P4>();
+}
+
+template <class R, class P1, class P2, class P3, class P4, class P5>
+inline FuncSig5<R, P1, P2, P3, P4, P5> MatchFunc(R (*f)(P1, P2, P3, P4, P5)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return FuncSig5<R, P1, P2, P3, P4, P5>();
+}
+
+/* MethodSig ******************************************************************/
+
+/* CallMethod*: a function template that calls a given method. */
+template <class R, class C, R (C::*F)()>
+R CallMethod0(C *obj) {
+ return ((*obj).*F)();
+}
+
+template <class R, class C, class P1, R (C::*F)(P1)>
+R CallMethod1(C *obj, P1 arg1) {
+ return ((*obj).*F)(arg1);
+}
+
+template <class R, class C, class P1, class P2, R (C::*F)(P1, P2)>
+R CallMethod2(C *obj, P1 arg1, P2 arg2) {
+ return ((*obj).*F)(arg1, arg2);
+}
+
+template <class R, class C, class P1, class P2, class P3, R (C::*F)(P1, P2, P3)>
+R CallMethod3(C *obj, P1 arg1, P2 arg2, P3 arg3) {
+ return ((*obj).*F)(arg1, arg2, arg3);
+}
+
+template <class R, class C, class P1, class P2, class P3, class P4,
+ R (C::*F)(P1, P2, P3, P4)>
+R CallMethod4(C *obj, P1 arg1, P2 arg2, P3 arg3, P4 arg4) {
+ return ((*obj).*F)(arg1, arg2, arg3, arg4);
+}
+
+/* MethodSig: like FuncSig, but for member functions.
+ *
+ * GetFunc() returns a normal FuncN object, so after calling GetFunc() no
+ * more logic is required to special-case methods. */
+template <class R, class C>
+struct MethodSig0 {
+ template <R (C::*F)()>
+ Func1<R, C *, CallMethod0<R, C, F>, FuncInfo<C *, R> > GetFunc() {
+ return Func1<R, C *, CallMethod0<R, C, F>, FuncInfo<C *, R> >();
+ }
+};
+
+template <class R, class C, class P1>
+struct MethodSig1 {
+ template <R (C::*F)(P1)>
+ Func2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> > GetFunc() {
+ return Func2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> >();
+ }
+
+ template <R (C::*F)(P1)>
+ BoundFunc2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> > GetFunc(
+ typename remove_constptr<P1>::type param1) {
+ return BoundFunc2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> >(
+ param1);
+ }
+};
+
+template <class R, class C, class P1, class P2>
+struct MethodSig2 {
+ template <R (C::*F)(P1, P2)>
+ Func3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, FuncInfo<C *, R> >
+ GetFunc() {
+ return Func3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>,
+ FuncInfo<C *, R> >();
+ }
+
+ template <R (C::*F)(P1, P2)>
+ BoundFunc3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, FuncInfo<C *, R> >
+ GetFunc(typename remove_constptr<P1>::type param1) {
+ return BoundFunc3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>,
+ FuncInfo<C *, R> >(param1);
+ }
+};
+
+template <class R, class C, class P1, class P2, class P3>
+struct MethodSig3 {
+ template <R (C::*F)(P1, P2, P3)>
+ Func4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>, FuncInfo<C *, R> >
+ GetFunc() {
+ return Func4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>,
+ FuncInfo<C *, R> >();
+ }
+
+ template <R (C::*F)(P1, P2, P3)>
+ BoundFunc4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>,
+ FuncInfo<C *, R> >
+ GetFunc(typename remove_constptr<P1>::type param1) {
+ return BoundFunc4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>,
+ FuncInfo<C *, R> >(param1);
+ }
+};
+
+template <class R, class C, class P1, class P2, class P3, class P4>
+struct MethodSig4 {
+ template <R (C::*F)(P1, P2, P3, P4)>
+ Func5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>,
+ FuncInfo<C *, R> >
+ GetFunc() {
+ return Func5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>,
+ FuncInfo<C *, R> >();
+ }
+
+ template <R (C::*F)(P1, P2, P3, P4)>
+ BoundFunc5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>,
+ FuncInfo<C *, R> >
+ GetFunc(typename remove_constptr<P1>::type param1) {
+ return BoundFunc5<R, C *, P1, P2, P3, P4,
+ CallMethod4<R, C, P1, P2, P3, P4, F>, FuncInfo<C *, R> >(
+ param1);
+ }
+};
+
+template <class R, class C>
+inline MethodSig0<R, C> MatchFunc(R (C::*f)()) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return MethodSig0<R, C>();
+}
+
+template <class R, class C, class P1>
+inline MethodSig1<R, C, P1> MatchFunc(R (C::*f)(P1)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return MethodSig1<R, C, P1>();
+}
+
+template <class R, class C, class P1, class P2>
+inline MethodSig2<R, C, P1, P2> MatchFunc(R (C::*f)(P1, P2)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return MethodSig2<R, C, P1, P2>();
+}
+
+template <class R, class C, class P1, class P2, class P3>
+inline MethodSig3<R, C, P1, P2, P3> MatchFunc(R (C::*f)(P1, P2, P3)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return MethodSig3<R, C, P1, P2, P3>();
+}
+
+template <class R, class C, class P1, class P2, class P3, class P4>
+inline MethodSig4<R, C, P1, P2, P3, P4> MatchFunc(R (C::*f)(P1, P2, P3, P4)) {
+ UPB_UNUSED(f); /* Only used for template parameter deduction. */
+ return MethodSig4<R, C, P1, P2, P3, P4>();
+}
+
+/* MaybeWrapReturn ************************************************************/
+
+/* Template class that attempts to wrap the return value of the function so it
+ * matches the expected type. There are two main adjustments it may make:
+ *
+ * 1. If the function returns void, make it return the expected type and with
+ * a value that always indicates success.
+ * 2. If the function returns bool, make it return the expected type with a
+ * value that indicates success or failure.
+ *
+ * The "expected type" for return is:
+ * 1. void* for start handlers. If the closure parameter has a different type
+ * we will cast it to void* for the return in the success case.
+ * 2. size_t for string buffer handlers.
+ * 3. bool for everything else. */
+
+/* Template parameters are FuncN type and desired return type. */
+template <class F, class R, class Enable = void>
+struct MaybeWrapReturn;
+
+/* If the return type matches, return the given function unwrapped. */
+template <class F>
+struct MaybeWrapReturn<F, typename F::Return> {
+ typedef F Func;
+};
+
+/* Function wrapper that munges the return value from void to (bool)true. */
+template <class P1, class P2, void F(P1, P2)>
+bool ReturnTrue2(P1 p1, P2 p2) {
+ F(p1, p2);
+ return true;
+}
+
+template <class P1, class P2, class P3, void F(P1, P2, P3)>
+bool ReturnTrue3(P1 p1, P2 p2, P3 p3) {
+ F(p1, p2, p3);
+ return true;
+}
+
+/* Function wrapper that munges the return value from void to (void*)arg1 */
+template <class P1, class P2, void F(P1, P2)>
+void *ReturnClosure2(P1 p1, P2 p2) {
+ F(p1, p2);
+ return p1;
+}
+
+template <class P1, class P2, class P3, void F(P1, P2, P3)>
+void *ReturnClosure3(P1 p1, P2 p2, P3 p3) {
+ F(p1, p2, p3);
+ return p1;
+}
+
+/* Function wrapper that munges the return value from R to void*. */
+template <class R, class P1, class P2, R F(P1, P2)>
+void *CastReturnToVoidPtr2(P1 p1, P2 p2) {
+ return F(p1, p2);
+}
+
+template <class R, class P1, class P2, class P3, R F(P1, P2, P3)>
+void *CastReturnToVoidPtr3(P1 p1, P2 p2, P3 p3) {
+ return F(p1, p2, p3);
+}
+
+/* Function wrapper that munges the return value from bool to void*. */
+template <class P1, class P2, bool F(P1, P2)>
+void *ReturnClosureOrBreak2(P1 p1, P2 p2) {
+ return F(p1, p2) ? p1 : UPB_BREAK;
+}
+
+template <class P1, class P2, class P3, bool F(P1, P2, P3)>
+void *ReturnClosureOrBreak3(P1 p1, P2 p2, P3 p3) {
+ return F(p1, p2, p3) ? p1 : UPB_BREAK;
+}
+
+/* For the string callback, which takes five params, returns the size param. */
+template <class P1, class P2,
+ void F(P1, P2, const char *, size_t, const upb_bufhandle *)>
+size_t ReturnStringLen(P1 p1, P2 p2, const char *p3, size_t p4,
+ const upb_bufhandle *p5) {
+ F(p1, p2, p3, p4, p5);
+ return p4;
+}
+
+/* For the string callback, which takes five params, returns the size param or
+ * zero. */
+template <class P1, class P2,
+ bool F(P1, P2, const char *, size_t, const upb_bufhandle *)>
+size_t ReturnNOr0(P1 p1, P2 p2, const char *p3, size_t p4,
+ const upb_bufhandle *p5) {
+ return F(p1, p2, p3, p4, p5) ? p4 : 0;
+}
+
+/* If we have a function returning void but want a function returning bool, wrap
+ * it in a function that returns true. */
+template <class P1, class P2, void F(P1, P2), class I>
+struct MaybeWrapReturn<Func2<void, P1, P2, F, I>, bool> {
+ typedef Func2<bool, P1, P2, ReturnTrue2<P1, P2, F>, I> Func;
+};
+
+template <class P1, class P2, class P3, void F(P1, P2, P3), class I>
+struct MaybeWrapReturn<Func3<void, P1, P2, P3, F, I>, bool> {
+ typedef Func3<bool, P1, P2, P3, ReturnTrue3<P1, P2, P3, F>, I> Func;
+};
+
+/* If our function returns void but we want one returning void*, wrap it in a
+ * function that returns the first argument. */
+template <class P1, class P2, void F(P1, P2), class I>
+struct MaybeWrapReturn<Func2<void, P1, P2, F, I>, void *> {
+ typedef Func2<void *, P1, P2, ReturnClosure2<P1, P2, F>, I> Func;
+};
+
+template <class P1, class P2, class P3, void F(P1, P2, P3), class I>
+struct MaybeWrapReturn<Func3<void, P1, P2, P3, F, I>, void *> {
+ typedef Func3<void *, P1, P2, P3, ReturnClosure3<P1, P2, P3, F>, I> Func;
+};
+
+/* If our function returns R* but we want one returning void*, wrap it in a
+ * function that casts to void*. */
+template <class R, class P1, class P2, R *F(P1, P2), class I>
+struct MaybeWrapReturn<Func2<R *, P1, P2, F, I>, void *,
+ typename disable_if_same<R *, void *>::Type> {
+ typedef Func2<void *, P1, P2, CastReturnToVoidPtr2<R *, P1, P2, F>, I> Func;
+};
+
+template <class R, class P1, class P2, class P3, R *F(P1, P2, P3), class I>
+struct MaybeWrapReturn<Func3<R *, P1, P2, P3, F, I>, void *,
+ typename disable_if_same<R *, void *>::Type> {
+ typedef Func3<void *, P1, P2, P3, CastReturnToVoidPtr3<R *, P1, P2, P3, F>, I>
+ Func;
+};
+
+/* If our function returns bool but we want one returning void*, wrap it in a
+ * function that returns either the first param or UPB_BREAK. */
+template <class P1, class P2, bool F(P1, P2), class I>
+struct MaybeWrapReturn<Func2<bool, P1, P2, F, I>, void *> {
+ typedef Func2<void *, P1, P2, ReturnClosureOrBreak2<P1, P2, F>, I> Func;
+};
+
+template <class P1, class P2, class P3, bool F(P1, P2, P3), class I>
+struct MaybeWrapReturn<Func3<bool, P1, P2, P3, F, I>, void *> {
+ typedef Func3<void *, P1, P2, P3, ReturnClosureOrBreak3<P1, P2, P3, F>, I>
+ Func;
+};
+
+/* If our function returns void but we want one returning size_t, wrap it in a
+ * function that returns the size argument. */
+template <class P1, class P2,
+ void F(P1, P2, const char *, size_t, const upb_bufhandle *), class I>
+struct MaybeWrapReturn<
+ Func5<void, P1, P2, const char *, size_t, const upb_bufhandle *, F, I>,
+ size_t> {
+ typedef Func5<size_t, P1, P2, const char *, size_t, const upb_bufhandle *,
+ ReturnStringLen<P1, P2, F>, I> Func;
+};
+
+/* If our function returns bool but we want one returning size_t, wrap it in a
+ * function that returns either 0 or the buf size. */
+template <class P1, class P2,
+ bool F(P1, P2, const char *, size_t, const upb_bufhandle *), class I>
+struct MaybeWrapReturn<
+ Func5<bool, P1, P2, const char *, size_t, const upb_bufhandle *, F, I>,
+ size_t> {
+ typedef Func5<size_t, P1, P2, const char *, size_t, const upb_bufhandle *,
+ ReturnNOr0<P1, P2, F>, I> Func;
+};
+
+/* ConvertParams **************************************************************/
+
+/* Template class that converts the function parameters if necessary, and
+ * ignores the HandlerData parameter if appropriate.
+ *
+ * Template parameter is the are FuncN function type. */
+template <class F, class T>
+struct ConvertParams;
+
+/* Function that discards the handler data parameter. */
+template <class R, class P1, R F(P1)>
+R IgnoreHandlerData2(void *p1, const void *hd) {
+ UPB_UNUSED(hd);
+ return F(static_cast<P1>(p1));
+}
+
+template <class R, class P1, class P2Wrapper, class P2Wrapped,
+ R F(P1, P2Wrapped)>
+R IgnoreHandlerData3(void *p1, const void *hd, P2Wrapper p2) {
+ UPB_UNUSED(hd);
+ return F(static_cast<P1>(p1), p2);
+}
+
+template <class R, class P1, class P2, class P3, R F(P1, P2, P3)>
+R IgnoreHandlerData4(void *p1, const void *hd, P2 p2, P3 p3) {
+ UPB_UNUSED(hd);
+ return F(static_cast<P1>(p1), p2, p3);
+}
+
+template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4)>
+R IgnoreHandlerData5(void *p1, const void *hd, P2 p2, P3 p3, P4 p4) {
+ UPB_UNUSED(hd);
+ return F(static_cast<P1>(p1), p2, p3, p4);
+}
+
+template <class R, class P1, R F(P1, const char*, size_t)>
+R IgnoreHandlerDataIgnoreHandle(void *p1, const void *hd, const char *p2,
+ size_t p3, const upb_bufhandle *handle) {
+ UPB_UNUSED(hd);
+ UPB_UNUSED(handle);
+ return F(static_cast<P1>(p1), p2, p3);
+}
+
+/* Function that casts the handler data parameter. */
+template <class R, class P1, class P2, R F(P1, P2)>
+R CastHandlerData2(void *c, const void *hd) {
+ return F(static_cast<P1>(c), static_cast<P2>(hd));
+}
+
+template <class R, class P1, class P2, class P3Wrapper, class P3Wrapped,
+ R F(P1, P2, P3Wrapped)>
+R CastHandlerData3(void *c, const void *hd, P3Wrapper p3) {
+ return F(static_cast<P1>(c), static_cast<P2>(hd), p3);
+}
+
+template <class R, class P1, class P2, class P3, class P4, class P5,
+ R F(P1, P2, P3, P4, P5)>
+R CastHandlerData5(void *c, const void *hd, P3 p3, P4 p4, P5 p5) {
+ return F(static_cast<P1>(c), static_cast<P2>(hd), p3, p4, p5);
+}
+
+template <class R, class P1, class P2, R F(P1, P2, const char *, size_t)>
+R CastHandlerDataIgnoreHandle(void *c, const void *hd, const char *p3,
+ size_t p4, const upb_bufhandle *handle) {
+ UPB_UNUSED(handle);
+ return F(static_cast<P1>(c), static_cast<P2>(hd), p3, p4);
+}
+
+/* For unbound functions, ignore the handler data. */
+template <class R, class P1, R F(P1), class I, class T>
+struct ConvertParams<Func1<R, P1, F, I>, T> {
+ typedef Func2<R, void *, const void *, IgnoreHandlerData2<R, P1, F>, I> Func;
+};
+
+template <class R, class P1, class P2, R F(P1, P2), class I,
+ class R2, class P1_2, class P2_2, class P3_2>
+struct ConvertParams<Func2<R, P1, P2, F, I>,
+ R2 (*)(P1_2, P2_2, P3_2)> {
+ typedef Func3<R, void *, const void *, P3_2,
+ IgnoreHandlerData3<R, P1, P3_2, P2, F>, I> Func;
+};
+
+/* For StringBuffer only; this ignores both the handler data and the
+ * upb_bufhandle. */
+template <class R, class P1, R F(P1, const char *, size_t), class I, class T>
+struct ConvertParams<Func3<R, P1, const char *, size_t, F, I>, T> {
+ typedef Func5<R, void *, const void *, const char *, size_t,
+ const upb_bufhandle *, IgnoreHandlerDataIgnoreHandle<R, P1, F>,
+ I> Func;
+};
+
+template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4),
+ class I, class T>
+struct ConvertParams<Func4<R, P1, P2, P3, P4, F, I>, T> {
+ typedef Func5<R, void *, const void *, P2, P3, P4,
+ IgnoreHandlerData5<R, P1, P2, P3, P4, F>, I> Func;
+};
+
+/* For bound functions, cast the handler data. */
+template <class R, class P1, class P2, R F(P1, P2), class I, class T>
+struct ConvertParams<BoundFunc2<R, P1, P2, F, I>, T> {
+ typedef Func2<R, void *, const void *, CastHandlerData2<R, P1, P2, F>, I>
+ Func;
+};
+
+template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I,
+ class R2, class P1_2, class P2_2, class P3_2>
+struct ConvertParams<BoundFunc3<R, P1, P2, P3, F, I>,
+ R2 (*)(P1_2, P2_2, P3_2)> {
+ typedef Func3<R, void *, const void *, P3_2,
+ CastHandlerData3<R, P1, P2, P3_2, P3, F>, I> Func;
+};
+
+/* For StringBuffer only; this ignores the upb_bufhandle. */
+template <class R, class P1, class P2, R F(P1, P2, const char *, size_t),
+ class I, class T>
+struct ConvertParams<BoundFunc4<R, P1, P2, const char *, size_t, F, I>, T> {
+ typedef Func5<R, void *, const void *, const char *, size_t,
+ const upb_bufhandle *,
+ CastHandlerDataIgnoreHandle<R, P1, P2, F>, I>
+ Func;
+};
+
+template <class R, class P1, class P2, class P3, class P4, class P5,
+ R F(P1, P2, P3, P4, P5), class I, class T>
+struct ConvertParams<BoundFunc5<R, P1, P2, P3, P4, P5, F, I>, T> {
+ typedef Func5<R, void *, const void *, P3, P4, P5,
+ CastHandlerData5<R, P1, P2, P3, P4, P5, F>, I> Func;
+};
+
+/* utype/ltype are upper/lower-case, ctype is canonical C type, vtype is
+ * variant C type. */
+#define TYPE_METHODS(utype, ltype, ctype, vtype) \
+ template <> \
+ struct CanonicalType<vtype> { \
+ typedef ctype Type; \
+ }; \
+ template <> \
+ inline bool HandlersPtr::SetValueHandler<vtype>( \
+ FieldDefPtr f, const HandlersPtr::utype##Handler &handler) { \
+ handler.AddCleanup(ptr()); \
+ return upb_handlers_set##ltype(ptr(), f.ptr(), handler.handler(), \
+ &handler.attr()); \
+ }
+
+TYPE_METHODS(Double, double, double, double)
+TYPE_METHODS(Float, float, float, float)
+TYPE_METHODS(UInt64, uint64, uint64_t, UPB_UINT64_T)
+TYPE_METHODS(UInt32, uint32, uint32_t, UPB_UINT32_T)
+TYPE_METHODS(Int64, int64, int64_t, UPB_INT64_T)
+TYPE_METHODS(Int32, int32, int32_t, UPB_INT32_T)
+TYPE_METHODS(Bool, bool, bool, bool)
+
+#ifdef UPB_TWO_32BIT_TYPES
+TYPE_METHODS(Int32, int32, int32_t, UPB_INT32ALT_T)
+TYPE_METHODS(UInt32, uint32, uint32_t, UPB_UINT32ALT_T)
+#endif
+
+#ifdef UPB_TWO_64BIT_TYPES
+TYPE_METHODS(Int64, int64, int64_t, UPB_INT64ALT_T)
+TYPE_METHODS(UInt64, uint64, uint64_t, UPB_UINT64ALT_T)
+#endif
+#undef TYPE_METHODS
+
+template <> struct CanonicalType<Status*> {
+ typedef Status* Type;
+};
+
+template <class F> struct ReturnOf;
+
+template <class R, class P1, class P2>
+struct ReturnOf<R (*)(P1, P2)> {
+ typedef R Return;
+};
+
+template <class R, class P1, class P2, class P3>
+struct ReturnOf<R (*)(P1, P2, P3)> {
+ typedef R Return;
+};
+
+template <class R, class P1, class P2, class P3, class P4>
+struct ReturnOf<R (*)(P1, P2, P3, P4)> {
+ typedef R Return;
+};
+
+template <class R, class P1, class P2, class P3, class P4, class P5>
+struct ReturnOf<R (*)(P1, P2, P3, P4, P5)> {
+ typedef R Return;
+};
+
+
+template <class T>
+template <class F>
+inline Handler<T>::Handler(F func)
+ : registered_(false),
+ cleanup_data_(func.GetData()),
+ cleanup_func_(func.GetCleanup()) {
+ attr_.handler_data = func.GetData();
+ typedef typename ReturnOf<T>::Return Return;
+ typedef typename ConvertParams<F, T>::Func ConvertedParamsFunc;
+ typedef typename MaybeWrapReturn<ConvertedParamsFunc, Return>::Func
+ ReturnWrappedFunc;
+ handler_ = ReturnWrappedFunc().Call;
+
+ /* Set attributes based on what templates can statically tell us about the
+ * user's function. */
+
+ /* If the original function returns void, then we know that we wrapped it to
+ * always return ok. */
+ bool always_ok = is_same<typename F::FuncInfo::Return, void>::value;
+ attr_.alwaysok = always_ok;
+
+ /* Closure parameter and return type. */
+ attr_.closure_type = UniquePtrForType<typename F::FuncInfo::Closure>();
+
+ /* We use the closure type (from the first parameter) if the return type is
+ * void or bool, since these are the two cases we wrap to return the closure's
+ * type anyway.
+ *
+ * This is all nonsense for non START* handlers, but it doesn't matter because
+ * in that case the value will be ignored. */
+ typedef typename FirstUnlessVoidOrBool<typename F::FuncInfo::Return,
+ typename F::FuncInfo::Closure>::value
+ EffectiveReturn;
+ attr_.return_closure_type = UniquePtrForType<EffectiveReturn>();
+}
+
+template <class T>
+inline void Handler<T>::AddCleanup(upb_handlers* h) const {
+ UPB_ASSERT(!registered_);
+ registered_ = true;
+ if (cleanup_func_) {
+ bool ok = upb_handlers_addcleanup(h, cleanup_data_, cleanup_func_);
+ UPB_ASSERT(ok);
+ }
+}
+
+} /* namespace upb */
+
+#endif /* __cplusplus */
+
+
+#undef UPB_TWO_32BIT_TYPES
+#undef UPB_TWO_64BIT_TYPES
+#undef UPB_INT32_T
+#undef UPB_UINT32_T
+#undef UPB_INT32ALT_T
+#undef UPB_UINT32ALT_T
+#undef UPB_INT64_T
+#undef UPB_UINT64_T
+#undef UPB_INT64ALT_T
+#undef UPB_UINT64ALT_T
+
+#include "upb/port_undef.inc"
+
+#endif /* UPB_HANDLERS_INL_H_ */
git://repos.xcallymotion.com / motion2.git / blobdiff