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move dispatch curve creation

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This commit is contained in:
Thomas Krijnen
2020-06-11 20:51:22 +02:00
parent 7f60ea9c52
commit eacea738f9
2 changed files with 47 additions and 23 deletions
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src/ifcgeom/kernel_agnostic/AbstractKernel.cpp
-23
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@@ -7,29 +7,6 @@
#include "../../ifcgeom/kernels/cgal/CgalKernel.h"
namespace {
/* A compile-time for loop over the taxonomy kinds */
template <size_t N>
struct dispatch_conversion {
static bool dispatch(ifcopenshell::geometry::kernels::AbstractKernel* kernel, const ifcopenshell::geometry::taxonomy::item* item, ifcopenshell::geometry::ConversionResults& results) {
if (N == item->kind()) {
auto concrete_item = static_cast<const ifcopenshell::geometry::taxonomy::type_by_kind::type<N>*>(item);
return kernel->convert_impl(concrete_item, results);
} else {
return dispatch_conversion<N + 1>::dispatch(kernel, item, results);
}
}
};
template <>
struct dispatch_conversion<ifcopenshell::geometry::taxonomy::type_by_kind::max> {
static bool dispatch(ifcopenshell::geometry::kernels::AbstractKernel*, const ifcopenshell::geometry::taxonomy::item* item, ifcopenshell::geometry::ConversionResults&) {
Logger::Error("No conversion for " + std::to_string(item->kind()));
return false;
}
};
}
bool ifcopenshell::geometry::kernels::AbstractKernel::convert(const taxonomy::item* item, ifcopenshell::geometry::ConversionResults& results) {
try {
return dispatch_conversion<0>::dispatch(this, item, results);
src/ifcgeom/kernel_agnostic/AbstractKernel.h
+47
View File
@@ -71,4 +71,51 @@ namespace ifcopenshell { namespace geometry { namespace kernels {
}
}
namespace {
/* A compile-time for loop over the taxonomy kinds */
template <size_t N>
struct dispatch_conversion {
static bool dispatch(ifcopenshell::geometry::kernels::AbstractKernel* kernel, const ifcopenshell::geometry::taxonomy::item* item, ifcopenshell::geometry::ConversionResults& results) {
if (N == item->kind()) {
auto concrete_item = static_cast<const ifcopenshell::geometry::taxonomy::type_by_kind::type<N>*>(item);
return kernel->convert_impl(concrete_item, results);
} else {
return dispatch_conversion<N + 1>::dispatch(kernel, item, results);
}
}
};
template <>
struct dispatch_conversion<ifcopenshell::geometry::taxonomy::type_by_kind::max> {
static bool dispatch(ifcopenshell::geometry::kernels::AbstractKernel*, const ifcopenshell::geometry::taxonomy::item* item, ifcopenshell::geometry::ConversionResults&) {
Logger::Error("No conversion for " + std::to_string(item->kind()));
return false;
}
};
/* A compile-time for loop over the curve kinds */
template <typename T, size_t N = 0>
struct dispatch_curve_creation {
static bool dispatch(const ifcopenshell::geometry::taxonomy::item* item, T& visitor) {
// @todo it should be possible to eliminate this dynamic_cast when there is a static equivalent to kind()
const ifcopenshell::geometry::taxonomy::curves::type<N>* v = dynamic_cast<const ifcopenshell::geometry::taxonomy::curves::type<N>*>(item);
if (v) {
visitor(*v);
return true;
} else {
return dispatch_curve_creation<T, N + 1>::dispatch(item, visitor);
}
}
};
template <typename T>
struct dispatch_curve_creation<T, ifcopenshell::geometry::taxonomy::curves::max> {
static bool dispatch(const ifcopenshell::geometry::taxonomy::item* item, T&) {
Logger::Error("No conversion for " + std::to_string(item->kind()));
return false;
}
};
}
#endif