fn rebuild_orders_and_dependencies(&mut self) {
        // This assertion is there to document that a maximum of `u32::MAX / 8` systems should be
        // added to a stage to guarantee that change detection has no false positive, but it
        // can be circumvented using exclusive or chained systems
        assert!(
            self.exclusive_at_start.len()
                + self.exclusive_before_commands.len()
                + self.exclusive_at_end.len()
                + self.parallel.len()
                < (u32::MAX / 8) as usize
        );
        debug_assert!(
            self.uninitialized_run_criteria.is_empty()
                && self.uninitialized_parallel.is_empty()
                && self.uninitialized_at_start.is_empty()
                && self.uninitialized_before_commands.is_empty()
                && self.uninitialized_at_end.is_empty()
        );
        fn unwrap_dependency_cycle_error<Node: GraphNode, Output, Labels: Debug>(
            result: Result<Output, DependencyGraphError<Labels>>,
            nodes: &[Node],
            nodes_description: &'static str,
        ) -> Output {
            match result {
                Ok(output) => output,
                Err(DependencyGraphError::GraphCycles(cycle)) => {
                    use std::fmt::Write;
                    let mut message = format!("Found a dependency cycle in {}:", nodes_description);
                    writeln!(message).unwrap();
                    for (index, labels) in &cycle {
                        writeln!(message, " - {}", nodes[*index].name()).unwrap();
                        writeln!(
                            message,
                            "    wants to be after (because of labels: {:?})",
                            labels,
                        )
                        .unwrap();
                    }
                    writeln!(message, " - {}", cycle[0].0).unwrap();
                    panic!("{}", message);
                }
            }
        }
        let run_criteria_labels = unwrap_dependency_cycle_error(
            self.process_run_criteria(),
            &self.run_criteria,
            "run criteria",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.parallel, &run_criteria_labels),
            &self.parallel,
            "parallel systems",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_at_start, &run_criteria_labels),
            &self.exclusive_at_start,
            "exclusive systems at start of stage",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_before_commands, &run_criteria_labels),
            &self.exclusive_before_commands,
            "exclusive systems before commands of stage",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_at_end, &run_criteria_labels),
            &self.exclusive_at_end,
            "exclusive systems at end of stage",
        );
    }
/// Rearranges all systems in topological orders. Systems must be initialized.
Rearranges all systems in topological orders. Systems must be initialized.
Rearranges all systems in topological orders . Systems must be initialized .
fn rebuild_orders_and_dependencies(&mut self) {
        // This assertion is there to document that a maximum of `u32::MAX / 8` systems should be
        // added to a stage to guarantee that change detection has no false positive, but it
        // can be circumvented using exclusive or chained systems
        assert!(
            self.exclusive_at_start.len()
                + self.exclusive_before_commands.len()
                + self.exclusive_at_end.len()
                + self.parallel.len()
                < (u32::MAX / 8) as usize
        );
        debug_assert!(
            self.uninitialized_run_criteria.is_empty()
                && self.uninitialized_parallel.is_empty()
                && self.uninitialized_at_start.is_empty()
                && self.uninitialized_before_commands.is_empty()
                && self.uninitialized_at_end.is_empty()
        );
        fn unwrap_dependency_cycle_error<Node: GraphNode, Output, Labels: Debug>(
            result: Result<Output, DependencyGraphError<Labels>>,
            nodes: &[Node],
            nodes_description: &'static str,
        ) -> Output {
            match result {
                Ok(output) => output,
                Err(DependencyGraphError::GraphCycles(cycle)) => {
                    use std::fmt::Write;
                    let mut message = format!("Found a dependency cycle in {}:", nodes_description);
                    writeln!(message).unwrap();
                    for (index, labels) in &cycle {
                        writeln!(message, " - {}", nodes[*index].name()).unwrap();
                        writeln!(
                            message,
                            "    wants to be after (because of labels: {:?})",
                            labels,
                        )
                        .unwrap();
                    }
                    writeln!(message, " - {}", cycle[0].0).unwrap();
                    panic!("{}", message);
                }
            }
        }
        let run_criteria_labels = unwrap_dependency_cycle_error(
            self.process_run_criteria(),
            &self.run_criteria,
            "run criteria",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.parallel, &run_criteria_labels),
            &self.parallel,
            "parallel systems",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_at_start, &run_criteria_labels),
            &self.exclusive_at_start,
            "exclusive systems at start of stage",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_before_commands, &run_criteria_labels),
            &self.exclusive_before_commands,
            "exclusive systems before commands of stage",
        );
        unwrap_dependency_cycle_error(
            process_systems(&mut self.exclusive_at_end, &run_criteria_labels),
            &self.exclusive_at_end,
            "exclusive systems at end of stage",
        );
    }
fn rebuild_orders_and_dependencies ( & mut self ) { // This assertion is there to document that a maximum of `u32::MAX / 8` systems should be // added to a stage to guarantee that change detection has no false positive, but it // can be circumvented using exclusive or chained systems assert ! ( self exclusive_at_start len ( ) self exclusive_before_commands len ( ) self exclusive_at_end len ( ) self parallel len ( ) ( u32 MAX 8 ) as usize ) ; debug_assert ! ( self uninitialized_run_criteria is_empty ( ) self uninitialized_parallel is_empty ( ) self uninitialized_at_start is_empty ( ) self uninitialized_before_commands is_empty ( ) self uninitialized_at_end is_empty ( ) ) ; fn unwrap_dependency_cycle_error < Node : GraphNode , Output , Labels : Debug > ( result : Result < Output , DependencyGraphError < Labels > > , nodes : & [ Node ] , nodes_description : & ' static str , ) -> Output { match result { Ok ( output ) => output , Err ( DependencyGraphError :: GraphCycles ( cycle ) ) => { use std :: fmt :: Write ; let mut message = format ! ( " " nodes_description ) ; writeln ! ( message ) . unwrap ( ) ; for ( index , labels ) in & cycle { writeln ! ( message " " nodes [ index ] name ( ) ) . unwrap ( ) ; writeln ! ( message " " labels ) . unwrap ( ) ; } writeln ! ( message " " cycle [ 0 ] 0 ) . unwrap ( ) ; panic ! ( " " message ) ; } } } let run_criteria_labels = unwrap_dependency_cycle_error ( self . process_run_criteria ( ) , & self . run_criteria , " " , ) ; unwrap_dependency_cycle_error ( process_systems ( & mut self . parallel , & run_criteria_labels ) , & self . parallel , " " , ) ; unwrap_dependency_cycle_error ( process_systems ( & mut self . exclusive_at_start , & run_criteria_labels ) , & self . exclusive_at_start , " " , ) ; unwrap_dependency_cycle_error ( process_systems ( & mut self . exclusive_before_commands , & run_criteria_labels ) , & self . exclusive_before_commands , " " , ) ; unwrap_dependency_cycle_error ( process_systems ( & mut self . exclusive_at_end , & run_criteria_labels ) , & self . exclusive_at_end , " " , ) ; }
Rearranges all systems in topological orders.
Rearranges all systems in topological orders .
&mut self
&mut self