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Add support for asynchronous macro expansion #2896

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Add support for asynchronous macro expansion #2896

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276c8d4
Add `AsyncSyntaxRewriter`
roopekv Nov 14, 2024
6f4cc1d
Add async overloads of `expansion` functions to macro protocols
roopekv Nov 14, 2024
d98d1fe
Add support for async macro expansion
roopekv Nov 14, 2024
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34 changes: 34 additions & 0 deletions CodeGeneration/Sources/generate-swift-syntax/GenerateSwiftSyntax.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ private let swiftParserGeneratedDir = ["SwiftParser", generatedDirName]
private let swiftParserDiagnosticsGeneratedDir = ["SwiftParserDiagnostics", generatedDirName]
private let swiftSyntaxGeneratedDir = ["SwiftSyntax", generatedDirName]
private let swiftSyntaxBuilderGeneratedDir = ["SwiftSyntaxBuilder", generatedDirName]
private let swiftSyntaxMacroExpansionGeneratedDir = ["SwiftSyntaxMacroExpansion", generatedDirName]
private let swiftSyntaxMacrosGenericTestSupportGeneratedDir = ["SwiftSyntaxMacrosGenericTestSupport", generatedDirName]
private let swiftSyntaxMacrosTestSupportGeneratedDir = ["SwiftSyntaxMacrosTestSupport", generatedDirName]
private let BASE_KIND_FILES: [SyntaxNodeKind: String] = [
.decl: "SyntaxDeclNodes.swift",
.expr: "SyntaxExprNodes.swift",
Expand Down Expand Up @@ -129,6 +132,15 @@ struct GenerateSwiftSyntax: AsyncParsableCommand {
GeneratedFileSpec(swiftSyntaxGeneratedDir + ["SyntaxEnum.swift"], syntaxEnumFile),
GeneratedFileSpec(swiftSyntaxGeneratedDir + ["SyntaxKind.swift"], syntaxKindFile),
GeneratedFileSpec(swiftSyntaxGeneratedDir + ["SyntaxRewriter.swift"], syntaxRewriterFile),
GeneratedFileSpec(
swiftSyntaxGeneratedDir + ["AsyncSyntaxRewriter.swift"],
makeSyntaxRewriterFile(
className: "AsyncSyntaxRewriter",
functionEffectSpecifiers: "async",
functionCallOperators: "await",
spiName: "MacroExpansion"
)
),
GeneratedFileSpec(swiftSyntaxGeneratedDir + ["SyntaxTraits.swift"], syntaxTraitsFile),
GeneratedFileSpec(
swiftSyntaxGeneratedDir + ["SyntaxVisitor.swift"],
Expand All @@ -151,6 +163,28 @@ struct GenerateSwiftSyntax: AsyncParsableCommand {
swiftSyntaxBuilderGeneratedDir + ["RenamedChildrenBuilderCompatibility.swift"],
renamedChildrenBuilderCompatibilityFile
),

// SwiftSyntaxMacroExpansion
GeneratedFileSpec(
swiftSyntaxMacroExpansionGeneratedDir + ["MacroExpansion.swift"],
macroExpansionFile
),
GeneratedFileSpec(
swiftSyntaxMacroExpansionGeneratedDir + ["MacroSystem.swift"],
macroSystemFile
),

// SwiftSyntaxMacrosGenericTestSupport
GeneratedFileSpec(
swiftSyntaxMacrosGenericTestSupportGeneratedDir + ["Assertions.swift"],
genericMacroAssertionsFile
),

// SwiftSyntaxMacrosTestSupport
GeneratedFileSpec(
swiftSyntaxMacrosTestSupportGeneratedDir + ["Assertions.swift"],
macroAssertionsFile
),
]
// This split of letters produces files for the syntax nodes that have about equal size, which improves compile time

Expand Down
1 change: 1 addition & 0 deletions ...ces/generate-swift-syntax/templates/swiftsyntax/SwiftSyntaxDoccIndexTemplate.md
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Expand Up @@ -48,6 +48,7 @@ allows Swift tools to parse, inspect, generate, and transform Swift source code.
- <doc:SwiftSyntax/SyntaxVisitor>
- <doc:SwiftSyntax/SyntaxAnyVisitor>
- <doc:SwiftSyntax/SyntaxRewriter>
- <doc:SwiftSyntax/AsyncSyntaxRewriter>
- <doc:SwiftSyntax/SyntaxTreeViewMode>
- <doc:SwiftSyntax/SyntaxVisitorContinueKind>
- <doc:SwiftSyntax/ReversedTokenSequence>
Expand Down
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