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[Merged by Bors] - Add methods for silencing system-order ambiguity warnings #6158

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@JoJoJet JoJoJet commented Oct 3, 2022

Background

Incremental implementation of #4299. The code is heavily borrowed from that PR.

Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

Solution

Title


Changelog

  • Added methods SystemDescriptor::ignore_all_ambiguities and ::ambiguous_with. These allow you to silence warnings for specific system-order ambiguities.

Migration Guide

Note for maintainers: This should replace the migration guide for #5916

Ambiguity sets have been replaced with a simpler API.

// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

@alice-i-cecile
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Can you add a migration guide comment? This is the replacement for the removed ambiguity sets.

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JoJoJet commented Oct 3, 2022

Can you add a migration guide comment? This is the replacement for the removed ambiguity sets.

Done :)

@alice-i-cecile alice-i-cecile added A-ECS Entities, components, systems, and events C-Usability A targeted quality-of-life change that makes Bevy easier to use labels Oct 4, 2022
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What needs to be done for this to exit draft status?

@JoJoJet JoJoJet marked this pull request as ready for review October 4, 2022 12:54
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JoJoJet commented Oct 4, 2022

Just wanted to give myself a chance to review it with fresh eyes first

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LGTM :) The tests are good!

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I had to clone this code to my machine, and open it with my IDE, in order to understand it... (first time doing scheduling related review)

...but it looks pretty good to me! The explanations you've provided make sense, and the tests are helpful to see how things would be used.

@alice-i-cecile alice-i-cecile added the S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it label Oct 9, 2022
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This is good to go!

bors r+

bors bot pushed a commit that referenced this pull request Oct 10, 2022
# Background

Incremental implementation of #4299. The code is heavily borrowed from that PR.

# Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

## Solution

Title

---

## Changelog

+ Added methods `SystemDescriptor::ignore_all_ambiguities` and `::ambiguous_with`. These allow you to silence warnings for specific system-order ambiguities.

## Migration Guide

***Note for maintainers**: This should replace the migration guide for #5916*

Ambiguity sets have been replaced with a simpler API.

```rust
// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

```
@bors bors bot changed the title Add methods for silencing system-order ambiguity warnings [Merged by Bors] - Add methods for silencing system-order ambiguity warnings Oct 10, 2022
@bors bors bot closed this Oct 10, 2022
@JoJoJet JoJoJet deleted the ignore-ambiguity branch October 10, 2022 16:57
james7132 pushed a commit to james7132/bevy that referenced this pull request Oct 19, 2022
…#6158)

# Background

Incremental implementation of bevyengine#4299. The code is heavily borrowed from that PR.

# Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

## Solution

Title

---

## Changelog

+ Added methods `SystemDescriptor::ignore_all_ambiguities` and `::ambiguous_with`. These allow you to silence warnings for specific system-order ambiguities.

## Migration Guide

***Note for maintainers**: This should replace the migration guide for bevyengine#5916*

Ambiguity sets have been replaced with a simpler API.

```rust
// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

```
@ickk ickk added the M-Needs-Migration-Guide A breaking change to Bevy's public API that needs to be noted in a migration guide label Oct 26, 2022
james7132 pushed a commit to james7132/bevy that referenced this pull request Oct 28, 2022
…#6158)

# Background

Incremental implementation of bevyengine#4299. The code is heavily borrowed from that PR.

# Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

## Solution

Title

---

## Changelog

+ Added methods `SystemDescriptor::ignore_all_ambiguities` and `::ambiguous_with`. These allow you to silence warnings for specific system-order ambiguities.

## Migration Guide

***Note for maintainers**: This should replace the migration guide for bevyengine#5916*

Ambiguity sets have been replaced with a simpler API.

```rust
// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

```
Pietrek14 pushed a commit to Pietrek14/bevy that referenced this pull request Dec 17, 2022
…#6158)

# Background

Incremental implementation of bevyengine#4299. The code is heavily borrowed from that PR.

# Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

## Solution

Title

---

## Changelog

+ Added methods `SystemDescriptor::ignore_all_ambiguities` and `::ambiguous_with`. These allow you to silence warnings for specific system-order ambiguities.

## Migration Guide

***Note for maintainers**: This should replace the migration guide for bevyengine#5916*

Ambiguity sets have been replaced with a simpler API.

```rust
// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

```
ItsDoot pushed a commit to ItsDoot/bevy that referenced this pull request Feb 1, 2023
…#6158)

# Background

Incremental implementation of bevyengine#4299. The code is heavily borrowed from that PR.

# Objective

The execution order ambiguity checker often emits false positives, since bevy is not aware of invariants upheld by the user.

## Solution

Title

---

## Changelog

+ Added methods `SystemDescriptor::ignore_all_ambiguities` and `::ambiguous_with`. These allow you to silence warnings for specific system-order ambiguities.

## Migration Guide

***Note for maintainers**: This should replace the migration guide for bevyengine#5916*

Ambiguity sets have been replaced with a simpler API.

```rust
// These systems technically conflict, but we don't care which order they run in.
fn jump_on_click(mouse: Res<Input<MouseButton>>, mut transforms: Query<&mut Transform>) { ... }
fn jump_on_spacebar(keys: Res<Input<KeyCode>>, mut transforms: Query<&mut Transform>) { ... }

//
// Before

#[derive(AmbiguitySetLabel)]
struct JumpSystems;

app
  .add_system(jump_on_click.in_ambiguity_set(JumpSystems))
  .add_system(jump_on_spacebar.in_ambiguity_set(JumpSystems));

//
// After

app
  .add_system(jump_on_click.ambiguous_with(jump_on_spacebar))
  .add_system(jump_on_spacebar);

```
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A-ECS Entities, components, systems, and events C-Usability A targeted quality-of-life change that makes Bevy easier to use M-Needs-Migration-Guide A breaking change to Bevy's public API that needs to be noted in a migration guide S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it
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