ILSpy

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Author	SHA1	Message	Date
Siegfried Pammer	cd10506c96	Fix #4079 : make stable Roslyn restorable from the solution directory ICSharpCode.Decompiler.Generators pins a stable Microsoft.CodeAnalysis.CSharp (a source generator must not reference a Roslyn newer than the host compiler) and ILSpy.AddIn.VS2022 pins a stable 4.0.1. Stable Roslyn lives only on nuget.org, but the repo-root NuGet.config mapped Microsoft.CodeAnalysis.* exclusively to the dotnet-tools feed, which carries only prerelease builds. Both projects worked around that with a per-project NuGet.config. dotnet restore honors it, since settings are computed per project directory, but Visual Studio starts NuGet.config discovery at the solution directory and never sees it: the first restore in VS on a machine with a cold NuGet cache fails with NU1103 exactly as reported. Once any successful restore has put the stable package into the global packages folder, source mapping is satisfied from the cache and the problem never reappears on that machine, which is why #3835 was closed as unreproducible. NuGet consults every source that declares the longest pattern matching a package id, so mapping Microsoft.CodeAnalysis.* to nuget.org as well as to dotnet-tools makes both feeds available for the whole family: the stable versions resolve from nuget.org and the prerelease $(RoslynVersion) from dotnet-tools. Both per-project configs are then redundant and removed. Verified with an empty NUGET_PACKAGES and the root config forced as the only config (simulating VS's discovery): the old config reproduces the reported NU1103; with the new config the generator, the decompiler tests (prerelease Roslyn) and the VS add-in (stable 4.0.1 with its Workspaces dependencies) all restore; restore.ps1 over ILSpy.sln leaves the lock files unchanged. Assisted-by: Claude:claude-fable-5:Claude Code	3 weeks ago
Siegfried Pammer	e264e926bb	Enforce one child type per slot kind; de-alias shared kinds A slot kind names one child position, so the generator emits a single typed Slots.X constant for it. A kind used with two different child types had to widen that constant to AstNode, and the typed GetChildren<T> accessor then cast the live AstNodeCollection<Concrete> to AstNodeCollection<AstNode> -- an InvalidCastException waiting for the first caller (latent today, but the model permitted it). Make the loose state unrepresentable instead of guarding it at runtime: DSTG001 errors when a [Slot] kind is declared with more than one child type. The six kinds that only coincidentally shared a name (Body, True, False, Initializer, SwitchSection, Variable) are split into precisely typed kinds; a genuinely either/or position (a lambda body) stays one declared type, AstNode. Every Slots.X now carries its real element type, so the GetChildren cast can no longer fail. Output is unchanged: the Pretty suite stays byte-identical with CheckInvariant green in DEBUG. Assisted-by: Claude:claude-opus-4-8:Claude Code	3 months ago
Siegfried Pammer	c174e4d6b1	Add the AST source generator for the C# syntax tree Introduce a Roslyn source generator that emits the visitor boilerplate for the C# AST from [DecompilerAstNode]-tagged node declarations: the IAstVisitor interface, the AcceptVisitor overloads, the pattern-placeholder nodes, and the initial DoMatch support. AccessorKind lets an accessor's keyword be chosen independently of its role, an early step toward shedding the NRefactory role model.	3 months ago

Author

SHA1

Message

Date

Siegfried Pammer

cd10506c96

Fix #4079 : make stable Roslyn restorable from the solution directory

ICSharpCode.Decompiler.Generators pins a stable Microsoft.CodeAnalysis.CSharp
(a source generator must not reference a Roslyn newer than the host compiler)
and ILSpy.AddIn.VS2022 pins a stable 4.0.1. Stable Roslyn lives only on
nuget.org, but the repo-root NuGet.config mapped Microsoft.CodeAnalysis.*
exclusively to the dotnet-tools feed, which carries only prerelease builds.
Both projects worked around that with a per-project NuGet.config. dotnet
restore honors it, since settings are computed per project directory, but
Visual Studio starts NuGet.config discovery at the solution directory and
never sees it: the first restore in VS on a machine with a cold NuGet cache
fails with NU1103 exactly as reported. Once any successful restore has put
the stable package into the global packages folder, source mapping is
satisfied from the cache and the problem never reappears on that machine,
which is why #3835 was closed as unreproducible.

NuGet consults every source that declares the longest pattern matching a
package id, so mapping Microsoft.CodeAnalysis.* to nuget.org as well as to
dotnet-tools makes both feeds available for the whole family: the stable
versions resolve from nuget.org and the prerelease $(RoslynVersion) from
dotnet-tools. Both per-project configs are then redundant and removed.

Verified with an empty NUGET_PACKAGES and the root config forced as the only
config (simulating VS's discovery): the old config reproduces the reported
NU1103; with the new config the generator, the decompiler tests (prerelease
Roslyn) and the VS add-in (stable 4.0.1 with its Workspaces dependencies)
all restore; restore.ps1 over ILSpy.sln leaves the lock files unchanged.

Assisted-by: Claude:claude-fable-5:Claude Code

3 weeks ago

Siegfried Pammer

e264e926bb

Enforce one child type per slot kind; de-alias shared kinds

A slot kind names one child position, so the generator emits a single
typed Slots.X constant for it. A kind used with two different child types
had to widen that constant to AstNode, and the typed GetChildren<T>
accessor then cast the live AstNodeCollection<Concrete> to
AstNodeCollection<AstNode> -- an InvalidCastException waiting for the
first caller (latent today, but the model permitted it).

Make the loose state unrepresentable instead of guarding it at runtime:
DSTG001 errors when a [Slot] kind is declared with more than one child
type. The six kinds that only coincidentally shared a name (Body, True,
False, Initializer, SwitchSection, Variable) are split into precisely
typed kinds; a genuinely either/or position (a lambda body) stays one
declared type, AstNode. Every Slots.X now carries its real element type,
so the GetChildren cast can no longer fail.

Output is unchanged: the Pretty suite stays byte-identical with
CheckInvariant green in DEBUG.

Assisted-by: Claude:claude-opus-4-8:Claude Code

3 months ago

Siegfried Pammer

c174e4d6b1

Add the AST source generator for the C# syntax tree

Introduce a Roslyn source generator that emits the visitor boilerplate for
the C# AST from [DecompilerAstNode]-tagged node declarations: the
IAstVisitor interface, the AcceptVisitor overloads, the pattern-placeholder
nodes, and the initial DoMatch support. AccessorKind lets an accessor's
keyword be chosen independently of its role, an early step toward shedding
the NRefactory role model.

3 months ago

3 Commits (9947ad528ae7f55313daf2139b906872bfc4a75a)