jll63

50 hierarchies, 1000 objects each
Compiler: clang 12.0.1 (release)
Load average: 1.93, 3.07, 2.32
Run on (8 X 2112 MHZ CPUs)
CPU caches:
  L1 Data 32768 KiB (x2)
  L1 Instruction 32768 KiB (x2)
  L2 Unified 262144 KiB (x2)
  L3 Unified 8388608 KiB (x8)

virtual arity 1, direct base

jll63

set(MACROLAB macrolab.cpp)
add_custom_command(
  OUTPUT ${MACROLAB}
  COMMAND ${CMAKE_BUILD_TOOL} lab.i
  COMMAND clang-format ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/lab.dir/lab.cpp.i > ${MACROLAB}
  DEPENDS lab.cpp
)
add_custom_target(
  ${MACROLAB}
  COMMAND make lab.i

jll63

template Params(alias fun) {
    static if (is(typeof(fun) P  == __parameters)) {
        alias Params = P;
    }
}

template forward(alias fun) {
	static foreach(idx, overload; __traits(getOverloads, __traits(parent, fun), __traits(identifier, fun)))
        @(__traits(getAttributes, overload)) auto forward(Params!overload p) {
            return fun(p);

jll63

void foo(virtual A, double) {} // 1
void foo(double, virtual A) {} // 2
void foo(virtual A, virtual A) {} // 3
override void foo(virtual B, double) {} // override 1
override void foo(double, virtual B) {} // override 2
override void foo(virtual A, virtual B) {} // override 3
override void foo(virtual B, virtual A) {} // override 3
override void foo(virtual B, virtual B) {} // override 3

jll63

module common;

class A {}
class B : A {}
class C : B {}

void foo(virtual A) {}


// ---