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Branch: tests/829-interpolated-string-improvements

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Author	SHA1	Message	Date
Siegfried Pammer	a24404a2f6	Add pretty tests for C# 10 interpolated string handlers StringInterpolationDefaultHandler (green) pins the DefaultInterpolatedStringHandler shapes the decompiler already folds back into interpolated strings on Roslyn 4 / .NET Core targets: multi-hole strings, literals, alignment and format specifiers, nested interpolations, ternary holes, char/bool/span/generic/nullable/object values, constant holes, and interpolations inside concatenations and branches. InterpolatedStringHandlers is Assert.Ignore'd because custom [InterpolatedStringHandler] call sites are not folded back yet (#829): calls lowered to handler ctor + Append* + call remain raw, including [InterpolatedStringHandlerArgument] receiver/parameter wiring, the trailing out-bool ctor (conditional evaluation), and bool-returning Append chains. The fixture is the desired output; the handler type declarations themselves already round-trip. It also captures three DefaultInterpolatedStringHandler shapes that leak: the three-arg IFormatProvider ctor with string.Create, the four-arg ctor with a stackalloc initial buffer, and a ReadOnlySpan<char> hole with alignment. All four Roslyn 4.14/latest debug/opt configs compile the fixture and fail only at the output comparison; the leaked output recompiles cleanly. Assisted-by: Claude:claude-fable-5:Claude Code	2 months ago

Author

SHA1

Message

Date

Siegfried Pammer

a24404a2f6

Add pretty tests for C# 10 interpolated string handlers

StringInterpolationDefaultHandler (green) pins the
DefaultInterpolatedStringHandler shapes the decompiler already folds
back into interpolated strings on Roslyn 4 / .NET Core targets:
multi-hole strings, literals, alignment and format specifiers, nested
interpolations, ternary holes, char/bool/span/generic/nullable/object
values, constant holes, and interpolations inside concatenations and
branches.

InterpolatedStringHandlers is Assert.Ignore'd because custom
[InterpolatedStringHandler] call sites are not folded back yet (#829):
calls lowered to handler ctor + Append* + call remain raw, including
[InterpolatedStringHandlerArgument] receiver/parameter wiring, the
trailing out-bool ctor (conditional evaluation), and bool-returning
Append chains. The fixture is the desired output; the handler type
declarations themselves already round-trip. It also captures three
DefaultInterpolatedStringHandler shapes that leak: the three-arg
IFormatProvider ctor with string.Create, the four-arg ctor with a
stackalloc initial buffer, and a ReadOnlySpan<char> hole with
alignment. All four Roslyn 4.14/latest debug/opt configs compile the
fixture and fail only at the output comparison; the leaked output
recompiles cleanly.

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

2 months ago

1 Commits (tests/829-interpolated-string-improvements)