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[Xamarin.Android.Build.Tasks] Fix Removal of Non Duplicate elements #856

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merged 1 commit into from
Sep 14, 2017

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dellis1972
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Fixes https://bugzilla.xamarin.com/show_bug.cgi?id=59473

Commit d079a42 went a bit too far when removing duplicates.
It removed ANY duplicate entry that appeared anywhere in the
document. What we really wanted to remove full duplicates that
exist at the same level as the current element in the document.
For example

	<foo>
		<bar name="bar1">
		  <bar2 />
		</bar>
                <bar name="bar2">
                  <bar2 />
                </bar>
		<dupe/>
		<dupe/>
	</foo>

bar2 should NOT be removed but one of the dupe values should.
So this commit reworks the RemoveDuplicates code to handle the
correct logic. It also adds a unit test for this exact senario.

Fixes https://bugzilla.xamarin.com/show_bug.cgi?id=59473

Commit d079a42 went a bit too far when removing duplicates.
It removed ANY duplicate entry that appeared anywhere in the
document. What we really wanted to remove full duplicates that
exist at the same level as the current element in the document.
For example

```xml
	<foo>
		<bar name="bar1">
		  <bar2 />
		</bar>
                <bar name="bar2">
                  <bar2 />
                </bar>
		<dupe/>
		<dupe/>
	</foo>
```

`bar2` should NOT be removed but one of the `dupe` values should.
So this commit reworks the RemoveDuplicates code to handle the
correct logic. It also adds a unit test for this exact senario.
@jonpryor
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build

[IntentFilter (new[]{Intent.ActionMain}, Categories = new[]{ ""com.xamarin.sample"" })]
public class TestActivity1 : FragmentActivity {
}
",
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Aside: these lines full of whitespace are weird.

foreach (var e in elements)
foreach (var d in ResolveDuplicates (e.Elements ()))
yield return d;
foreach (var d in elements.GroupBy (x => x.ToFullString ()).SelectMany (x => x.Skip (1)))
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I don't understand how this method works. :-(

This part appears to be identical to what's being removed, i.e. this fragment is "buggy" (hence it needing to be fixed in the first place). Presumably then, the above foreach (var e in elements) loop fixes the bug, but I don't understand how these separate loops interact.

Assuming that the foreach (var e in elements) ultimately yield 0 elements, we'd still have this loop, which is known to be buggy. If the foreach (var e in elements) does yield elements, that's just more elements to remove!

How's this work? It's blowing my mind. :-(

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The previous method used Descendants() which gets every single child element not just those that are immediate children. So given

<foo>
   <bar>
     <bug/>
   </bar>
   <dar>
     <bug/>
   </dar>
   <too/>
   <too/>
</foo>

In the previous method both bug elements would be removed because Descendants() gets every element including all children. Elements() gets the elements that are children for this exact parent. So the new system will remove duplicates which exist at the same level and ONLY those that exist at the same level. So in the sample above the bug will be left as they are as they have different parent elements. But the too items will be removed as they have the same parent.

@jonpryor jonpryor merged commit 86d2f30 into dotnet:master Sep 14, 2017
jonpryor pushed a commit that referenced this pull request Sep 14, 2017
…856)

Fixes: https://bugzilla.xamarin.com/show_bug.cgi?id=59473

Commit d079a42 went a bit too far when removing duplicates.
It removed *any* duplicate entry that appeared anywhere in the
document. What we really wanted to remove full duplicates that
exist at the same level as the current element in the document.
For example:

```xml
	<foo>
		<bar name="bar1">
		  <bar2 />
		</bar>
                <bar name="bar2">
                  <bar2 />
                </bar>
		<dupe/>
		<dupe/>
	</foo>
```

`<bar2/>` should *not* be removed but one of the `<dupe/>` values
should. This commit reworks `RemoveDuplicates()` code to handle the
correct logic. It also adds a unit test for this exact senario.
jonpryor pushed a commit to jonpryor/xamarin-android that referenced this pull request Sep 14, 2017
…otnet#856)

Fixes: https://bugzilla.xamarin.com/show_bug.cgi?id=59473

Commit d079a42 went a bit too far when removing duplicates.
It removed *any* duplicate entry that appeared anywhere in the
document. What we really wanted to remove full duplicates that
exist at the same level as the current element in the document.
For example:

```xml
	<foo>
		<bar name="bar1">
		  <bar2 />
		</bar>
                <bar name="bar2">
                  <bar2 />
                </bar>
		<dupe/>
		<dupe/>
	</foo>
```

`<bar2/>` should *not* be removed but one of the `<dupe/>` values
should. This commit reworks `RemoveDuplicates()` code to handle the
correct logic. It also adds a unit test for this exact senario.
jonpryor pushed a commit that referenced this pull request Jul 21, 2021
Fixes: dotnet/java-interop#854

Changes: dotnet/installer@e8b3b6b...9c46371

    % git diff --shortstat e8b3b6be...9c463710
     103 files changed, 2301 insertions(+), 2757 deletions(-)

Changes: dotnet/linker@a07cab7...460dd6d

    % git diff --shortstat a07cab7b...460dd6dd
     84 files changed, 2403 insertions(+), 258 deletions(-)

Changes: dotnet/runtime@02f70d0...96ce6b3

    % git diff --shortstat 02f70d0b90...96ce6b3535
     2586 files changed, 123677 insertions(+), 34433 deletions(-)

Changes: dotnet/java-interop@a5ed891...4fb7c14

  * dotnet/java-interop@4fb7c147: [build] set $(DisableImplicitNamespaceImports) by default (#859)
  * dotnet/java-interop@855ecfa3: [generator] Don't generate unexpected NRT types like `void?` (#856)
  * dotnet/java-interop@4a02bc32: Revert "[Xamarin.Android.Tools.Bytecode] hide nested types (#827)" (#855)
  * dotnet/java-interop@95c9b79d: [generator] Avoid 'error (…):' construct in diagnostic messages (#851)
  * dotnet/java-interop@7c4f7db0: [build] Bump to Mono with MSBuild 16.10 (#848)
  * dotnet/java-interop@0227cdae: [generator] Gracefully handle BindingGeneratorException. (#845)
  * dotnet/java-interop@ce1750fd: Add SECURITY.md (#846)

Context: dotnet/runtime#55384
Context: dotnet/sdk#18639

Updates:

  * Microsoft.Dotnet.Sdk.Internal: from 6.0.100-preview.7.21327.2 to 6.0.100-rc.1.21369.3
  * Microsoft.NET.ILLink.Tasks: from 6.0.100-preview.6.21322.1 to 6.0.100-preview.6.21366.2
  * Microsoft.NETCore.App.Ref: from 6.0.0-preview.7.21326.8 to 6.0.0-rc.1.21368.1

dotnet/runtime#55384 broke how .NET 6 interacts with
`AndroidClientHandler`.  Fix this by introducing a new
`Xamarin.Android.Net.AndroidMessageHandler` type for use on .NET 6,
and update the .NET 6 `AndroidClientHandler` to delegate to
`AndroidMessageHandler`.

`AndroidMessageHandler` doesn't exist on Legacy.

Update `.apkdesc` files:

  * `BuildReleaseArm64SimpleDotNet` is ~37KB smaller
  * `BuildReleaseArm64XFormsDotNet` is ~62KB larger.

Update `tests/api-compatibility/api-compat-exclude-attributes.txt`
so that `T:System.Runtime.CompilerServices.CompilerGeneratedAttribute`
is ignored.  `[CompilerGeneratedAttribute]` is emitted as part of
C# 3 "auto-props":

	public T Property { get; set; }

Converting this into a "real" property:

	T value;
	public T Property {
	    get => value;
	    set => this.value = value;
	}

results in the `_CheckApiCompatibility` target complaining about an
API break.  We don't care; ignore `[CompilerGeneratedAttribute]`.

Remove `$(SelfContained)` property: early on in .NET 5 (yes 5)
development, the Xamarin.Android SDK needed to specify
`$(SelfContained)` by default in order to produce `.apk` files.

After we became a proper workload, setting the value became
unnecessary.  It also didn't actually do anything because
dotnet/sdk overwrote the value.

Starting in dotnet/sdk#18639,
`Microsoft.NET.RuntimeIdentifierInference.targets` is now being
imported *after* a workload, which meant that dotnet/sdk no longer
overwrote our `$(SelfContained)` value, which broke things:

	error NETSDK1031: It is not supported to build or publish a self-contained application without specifying a RuntimeIdentifier. You must either specify a RuntimeIdentifier or set SelfContained to false.

We can simply remove `$(SelfContained)` now, and rely on
dotnet/sdk to set this value.

Co-authored-by: Jonathan Peppers <[email protected]>
Co-authored-by: Steve Pfister <[email protected]>
jonpryor pushed a commit that referenced this pull request Jul 21, 2021
Fixes: dotnet/java-interop#854

Changes: dotnet/installer@e8b3b6b...808795c

    % git diff --shortstat e8b3b6be...808795cc
     102 files changed, 2218 insertions(+), 2674 deletions(-)

Changes: dotnet/linker@a07cab7...9ecf5bd

    % git diff --shortstat a07cab7b...9ecf5bd2
     81 files changed, 2122 insertions(+), 246 deletions(-)


Changes: dotnet/runtime@02f70d0...8d3afa3

    % git diff --shortstat 02f70d0b...8d3afa3a
     2518 files changed, 122843 insertions(+), 33676 deletions(-)

Changes: dotnet/java-interop@a5ed891...4fb7c14

  * dotnet/java-interop@4fb7c147: [build] set $(DisableImplicitNamespaceImports) by default (#859)
  * dotnet/java-interop@855ecfa3: [generator] Don't generate unexpected NRT types like `void?` (#856)
  * dotnet/java-interop@4a02bc32: Revert "[Xamarin.Android.Tools.Bytecode] hide nested types (#827)" (#855)
  * dotnet/java-interop@95c9b79d: [generator] Avoid 'error (…):' construct in diagnostic messages (#851)
  * dotnet/java-interop@7c4f7db0: [build] Bump to Mono with MSBuild 16.10 (#848)
  * dotnet/java-interop@0227cdae: [generator] Gracefully handle BindingGeneratorException. (#845)
  * dotnet/java-interop@ce1750fd: Add SECURITY.md (#846)

Context: dotnet/runtime#55384
Context: dotnet/sdk#18639

Updates:

  * Microsoft.Dotnet.Sdk.Internal: from 6.0.100-preview.7.21327.2 to 6.0.100-preview.7.21369.5
  * Microsoft.NET.ILLink.Tasks: from 6.0.100-preview.6.21322.1 to 6.0.100-preview.6.21365.1
  * Microsoft.NETCore.App.Ref: from 6.0.0-preview.7.21326.8 to 6.0.0-preview.7.21368.2

dotnet/runtime#55384 broke how .NET 6 interacts with
`AndroidClientHandler`.  Fix this by introducing a new
`Xamarin.Android.Net.AndroidMessageHandler` type for use on .NET 6,
and update the .NET 6 `AndroidClientHandler` to delegate to
`AndroidMessageHandler`.

`AndroidMessageHandler` doesn't exist on Legacy.

Update `.apkdesc` files:

  * `BuildReleaseArm64SimpleDotNet` is ~37KB smaller
  * `BuildReleaseArm64XFormsDotNet` is ~62KB larger.

Update `tests/api-compatibility/api-compat-exclude-attributes.txt`
so that `T:System.Runtime.CompilerServices.CompilerGeneratedAttribute`
is ignored.  `[CompilerGeneratedAttribute]` is emitted as part of
C# 3 "auto-props":

	public T Property { get; set; }

Converting this into a "real" property:

	T value;
	public T Property {
	    get => value;
	    set => this.value = value;
	}

results in the `_CheckApiCompatibility` target complaining about an
API break.  We don't care; ignore `[CompilerGeneratedAttribute]`.

Remove `$(SelfContained)` property: early on in .NET 5 (yes 5)
development, the Xamarin.Android SDK needed to specify
`$(SelfContained)` by default in order to produce `.apk` files.

After we became a proper workload, setting the value became
unnecessary.  It also didn't actually do anything because
dotnet/sdk overwrote the value.

Starting in dotnet/sdk#18639,
`Microsoft.NET.RuntimeIdentifierInference.targets` is now being
imported *after* a workload, which meant that dotnet/sdk no longer
overwrote our `$(SelfContained)` value, which broke things:

	error NETSDK1031: It is not supported to build or publish a self-contained application without specifying a RuntimeIdentifier. You must either specify a RuntimeIdentifier or set SelfContained to false.

We can simply remove `$(SelfContained)` now, and rely on
dotnet/sdk to set this value.

Co-authored-by: Jonathan Peppers <[email protected]>
Co-authored-by: Steve Pfister <[email protected]>
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3 participants