shader: Calculate number of arguments in an opcode at compile time
This commit is contained in:
parent
dd860b684c
commit
79c2e43fcd
|
@ -57,6 +57,17 @@ constexpr std::array META_TABLE{
|
||||||
#undef OPCODE
|
#undef OPCODE
|
||||||
};
|
};
|
||||||
|
|
||||||
|
constexpr size_t CalculateNumArgsOf(Opcode op) {
|
||||||
|
const auto& arg_types{META_TABLE[static_cast<size_t>(op)].arg_types};
|
||||||
|
return std::distance(arg_types.begin(), std::ranges::find(arg_types, Type::Void));
|
||||||
|
}
|
||||||
|
|
||||||
|
constexpr std::array NUM_ARGS{
|
||||||
|
#define OPCODE(name_token, type_token, ...) CalculateNumArgsOf(Opcode::name_token),
|
||||||
|
#include "opcodes.inc"
|
||||||
|
#undef OPCODE
|
||||||
|
};
|
||||||
|
|
||||||
void ValidateOpcode(Opcode op) {
|
void ValidateOpcode(Opcode op) {
|
||||||
const size_t raw{static_cast<size_t>(op)};
|
const size_t raw{static_cast<size_t>(op)};
|
||||||
if (raw >= META_TABLE.size()) {
|
if (raw >= META_TABLE.size()) {
|
||||||
|
@ -72,9 +83,7 @@ Type TypeOf(Opcode op) {
|
||||||
|
|
||||||
size_t NumArgsOf(Opcode op) {
|
size_t NumArgsOf(Opcode op) {
|
||||||
ValidateOpcode(op);
|
ValidateOpcode(op);
|
||||||
const auto& arg_types{META_TABLE[static_cast<size_t>(op)].arg_types};
|
return NUM_ARGS[static_cast<size_t>(op)];
|
||||||
const auto distance{std::distance(arg_types.begin(), std::ranges::find(arg_types, Type::Void))};
|
|
||||||
return static_cast<size_t>(distance);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
Type ArgTypeOf(Opcode op, size_t arg_index) {
|
Type ArgTypeOf(Opcode op, size_t arg_index) {
|
||||||
|
|
Reference in New Issue