[Macros] Cache parsed syntax tree in compiler plugins

swiftlang / swift-syntax

A set of Swift libraries for parsing, inspecting, generating, and transforming Swift source code.

Apache License 2.0

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[Macros] Cache parsed syntax tree in compiler plugins #2682

Closed rintaro closed 1 month ago

rintaro commented 1 month ago

The compiler may send the same syntax to the plugins multiple times. For example, memberAttribute macro request contains parent nominal decl syntax, and the compiler sends a request for each members. Parsing it multiple times is a waste.

rdar://129624305

rintaro commented 1 month ago

@swift-ci Please test

rintaro commented 1 month ago

@swift-ci Please test

rintaro commented 1 month ago

@swift-ci Please test

rintaro commented 1 month ago

@swift-ci Please test Windows

rintaro commented 1 month ago

@swift-ci Please test Windows

rintaro commented 1 month ago

@swift-ci Please test Windows