Optimize JsonRpcMessage deserialization with single-pass parsing#1138

Merged

stephentoub merged 14 commits intomainfrom

copilot/optimize-jsonrpcmessage-read-method

Jan 13, 2026

Commits on Jan 12, 2026

Commits on Jan 13, 2026

Use out parameter for ParseUnion to avoid struct copy

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eiriktsarpalis
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Use property pattern matching on union for clearer code

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eiriktsarpalis
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Replace wildcard pattern with explicit exhaustive pattern

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eiriktsarpalis
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Optimize union initialization by avoiding object initializer

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eiriktsarpalis
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Remove redundant HasMethod and HasError boolean flags

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Move error cases to bottom of pattern match

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eiriktsarpalis
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Additional tidying
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Remove HasId flag by using Id.Id nullability check

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stephentoub
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Inline ParseUnion and remove Union struct, optimize jsonrpc validation

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stephentoub
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Address code review feedback: restructure control flow and rename variables

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Remove JsonRpc property assignments and reorder error check

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stephentoub
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