Method PrintBinaryInstrExpr

Source/SpireCore/CLikeCodeGen.cpp:164–325

		}

		void CLikeCodeGen::PrintBinaryInstrExpr(CodeGenContext & ctx, BinaryInstruction * instr)
		{
			if (instr->Is<StoreInstruction>())
			{
				auto op0 = instr->Operands[0].Ptr();
				auto op1 = instr->Operands[1].Ptr();
				ctx.Body << "(";
				PrintOp(ctx, op0);
				ctx.Body << " = ";
				PrintOp(ctx, op1);
				ctx.Body << ")";
				return;
			}
			auto op0 = instr->Operands[0].Ptr();
			auto op1 = instr->Operands[1].Ptr();
			if (instr->Is<StoreInstruction>())
			{
				throw InvalidOperationException("store instruction cannot appear as expression.");
			}
			if (instr->Is<MemberLoadInstruction>())
			{
				PrintOp(ctx, op0);
				bool printDefault = true;
				if (op0->Type->GetVectorSize() <= 4 && op0->Type->IsVector())
				{
					if (auto c = dynamic_cast<ILConstOperand*>(op1))
					{
						switch (c->IntValues[0])
						{
						case 0:
							ctx.Body << ".x";
							break;
						case 1:
							ctx.Body << ".y";
							break;
						case 2:
							ctx.Body << ".z";
							break;
						case 3:
							ctx.Body << ".w";
							break;
						default:
							throw InvalidOperationException("Invalid member access.");
						}
						printDefault = false;
					}
				}
				else if (auto structType = dynamic_cast<ILStructType*>(op0->Type.Ptr()))
				{
					if (auto c = dynamic_cast<ILConstOperand*>(op1))
					{
						ctx.Body << "." << structType->Members[c->IntValues[0]].FieldName;
					}
					printDefault = false;
				}
				if (printDefault)
				{
					ctx.Body << "[";