refactor: make a variadic gin_helper::internal::InvokeFactory() (#46028)
refactor: make a variadic gin_helper::internal::InvokeFactory() Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com> Co-authored-by: Charles Kerr <charles@charleskerr.com>
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1 changed files with 34 additions and 123 deletions
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@ -5,6 +5,8 @@
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#ifndef ELECTRON_SHELL_COMMON_GIN_HELPER_CONSTRUCTOR_H_
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#define ELECTRON_SHELL_COMMON_GIN_HELPER_CONSTRUCTOR_H_
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#include <tuple>
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#include "shell/common/gin_helper/function_template.h"
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#include "shell/common/gin_helper/wrappable_base.h"
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@ -12,131 +14,40 @@ namespace gin_helper {
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namespace internal {
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// This set of templates invokes a base::RepeatingCallback by converting the
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// Arguments into native types. It relies on the function_template.h to provide
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// helper templates.
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*()>& callback) {
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return callback.Run();
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}
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// Convert a `gin::Argument`'s arguments into a tuple of native types
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// by iteratively calling gin_helper::GetNextArgument().
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template <typename... Types>
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class GinArgumentsToTuple {
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public:
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[[nodiscard]] static std::pair<bool /*ok*/, std::tuple<Types...>> GetArgs(
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gin::Arguments* args) {
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bool ok = true;
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InvokerOptions opts{.holder_is_first_argument = true};
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auto tup = std::make_tuple(GetNextArg<Types>(args, opts, ok)...);
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return {ok, std::move(tup)};
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}
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template <typename P1>
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1)>& callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1))
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return nullptr;
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return callback.Run(a1);
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}
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private:
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template <typename T>
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static T GetNextArg(gin::Arguments* args, InvokerOptions& opts, bool& ok) {
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auto val = T{};
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ok = ok && gin_helper::GetNextArgument(args, opts, 0, &val);
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opts.holder_is_first_argument = false;
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return val;
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}
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};
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template <typename P1, typename P2>
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inline WrappableBase* InvokeFactory(
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// Invoke a callback with arguments extracted from `args`.
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template <typename... Types>
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WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1, P2)>& callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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typename CallbackParamTraits<P2>::LocalType a2;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a2))
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return nullptr;
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return callback.Run(a1, a2);
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}
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template <typename P1, typename P2, typename P3>
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1, P2, P3)>& callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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typename CallbackParamTraits<P2>::LocalType a2;
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typename CallbackParamTraits<P3>::LocalType a3;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a2) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a3))
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return nullptr;
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return callback.Run(a1, a2, a3);
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}
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template <typename P1, typename P2, typename P3, typename P4>
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1, P2, P3, P4)>& callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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typename CallbackParamTraits<P2>::LocalType a2;
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typename CallbackParamTraits<P3>::LocalType a3;
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typename CallbackParamTraits<P4>::LocalType a4;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a2) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a3) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a4))
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return nullptr;
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return callback.Run(a1, a2, a3, a4);
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}
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template <typename P1, typename P2, typename P3, typename P4, typename P5>
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1, P2, P3, P4, P5)>&
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callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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typename CallbackParamTraits<P2>::LocalType a2;
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typename CallbackParamTraits<P3>::LocalType a3;
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typename CallbackParamTraits<P4>::LocalType a4;
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typename CallbackParamTraits<P5>::LocalType a5;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a2) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a3) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a4) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a5))
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return nullptr;
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return callback.Run(a1, a2, a3, a4, a5);
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}
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template <typename P1,
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typename P2,
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typename P3,
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typename P4,
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typename P5,
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typename P6>
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inline WrappableBase* InvokeFactory(
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gin::Arguments* args,
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const base::RepeatingCallback<WrappableBase*(P1, P2, P3, P4, P5, P6)>&
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callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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typename CallbackParamTraits<P2>::LocalType a2;
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typename CallbackParamTraits<P3>::LocalType a3;
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typename CallbackParamTraits<P4>::LocalType a4;
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typename CallbackParamTraits<P5>::LocalType a5;
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typename CallbackParamTraits<P6>::LocalType a6;
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if (!gin_helper::GetNextArgument(args, {.holder_is_first_argument = true}, 0,
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&a1) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a2) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a3) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a4) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a5) ||
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!gin_helper::GetNextArgument(args, {.holder_is_first_argument = false}, 0,
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&a6))
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return nullptr;
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return callback.Run(a1, a2, a3, a4, a5, a6);
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const base::RepeatingCallback<WrappableBase*(Types...)>& callback) {
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auto [ok, tup] = GinArgumentsToTuple<Types...>::GetArgs(args);
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if (!ok)
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return {};
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return std::apply(
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[&callback](Types... args) { return callback.Run(std::move(args)...); },
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std::move(tup));
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}
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template <typename Sig>
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@ -151,7 +62,7 @@ void InvokeNew(const base::RepeatingCallback<Sig>& factory,
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WrappableBase* object;
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{
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// Don't continue if the constructor throws an exception.
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v8::TryCatch try_catch(isolate);
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v8::TryCatch try_catch{isolate};
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object = internal::InvokeFactory(args, factory);
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if (try_catch.HasCaught()) {
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try_catch.ReThrow();
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