Method VisitInvokeExpression

Source/SpireCore/CodeGenerator.cpp:1146–1210

				return expr;
			}
			virtual RefPtr<ExpressionSyntaxNode> VisitInvokeExpression(InvokeExpressionSyntaxNode* expr) override
			{
				List<ILOperand*> args;
				String funcName;
				bool hasSideEffect = false;
				if (auto basicType = expr->FunctionExpr->Type->AsBasicType())
				{
					if (basicType->Func)
					{
						funcName = basicType->Func->SyntaxNode->IsExtern() ? basicType->Func->SyntaxNode->Name.Content : basicType->Func->SyntaxNode->InternalName;
						for (auto & param : basicType->Func->SyntaxNode->GetParameters())
						{
							if (param->HasModifier(ModifierFlag::Out))
							{
								hasSideEffect = true;
								break;
							}
						}
					}
					else if (basicType->Component)
					{
						auto funcCompName = expr->FunctionExpr->Tags["ComponentReference"]().As<StringObject>()->Content;
						auto funcComp = *(currentShader->DefinitionsByComponent[funcCompName]().TryGetValue(currentComponent->World));
						funcName = GetComponentFunctionName(funcComp->SyntaxNode.Ptr());
						for (auto & param : funcComp->SyntaxNode->GetParameters())
						{
							if (param->HasModifier(ModifierFlag::Out))
							{
								hasSideEffect = true;
								break;
							}
						}
						// push additional arguments
						for (auto & dep : funcComp->GetComponentFunctionDependencyClosure())
						{
							if (!dep->SyntaxNode->IsComponentFunction())
							{
								ILOperand * op = nullptr;
								if (variables.TryGetValue(dep->UniqueName, op))
									args.Add(op);
								else
									throw InvalidProgramException("cannot resolve reference for implicit component function argument.");
							}
						}
					}
				}
				if (currentWorld)
				{
					currentWorld->ReferencedFunctions.Add(funcName);
				}
				for (auto arg : expr->Arguments)
				{
					arg->Accept(this);
					args.Add(PopStack());
				}
				auto instr = new CallInstruction(args.Count());
				instr->SideEffect = hasSideEffect;
				instr->Function = funcName;