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e3a0f24cfe
* Unify macro expansion parsing logic between MacroExpansionExpr and MacroExpansionDecl * Diagnose whitespace between '#' and the macro name * Diagnose keyword as a macro name
62 lines
1.9 KiB
Swift
62 lines
1.9 KiB
Swift
// REQUIRES: swift_swift_parser
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// RUN: %empty-directory(%t)
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// RUN: mkdir -p %t/src
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// RUN: mkdir -p %t/plugins
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// RUN: mkdir -p %t/lib
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// RUN: split-file %s %t/src
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//#-- Prepare the macro dylib plugin.
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// RUN: %host-build-swift \
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// RUN: -swift-version 5 \
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// RUN: -emit-library -o %t/plugins/%target-library-name(MacroDefinition) \
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// RUN: -module-name MacroDefinition \
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// RUN: %t/src/MacroDefinition.swift \
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// RUN: -g -no-toolchain-stdlib-rpath
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//#-- Prepare the macro library.
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// RUN: %target-swift-frontend \
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// RUN: -swift-version 5 \
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// RUN: -emit-module -o %t/lib/MacroLib.swiftmodule \
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// RUN: -module-name MacroLib \
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// RUN: -plugin-path %t/plugins \
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// RUN: %t/src/MacroLib.swift
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// RUN: %target-swift-frontend \
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// RUN: -typecheck -verify \
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// RUN: -I %t/lib \
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// RUN: -plugin-path %t/plugins \
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// RUN: %t/src/test.swift
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//--- MacroDefinition.swift
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import SwiftSyntax
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import SwiftSyntaxMacros
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public struct OneMacro: ExpressionMacro {
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public static func expansion(
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of node: some FreestandingMacroExpansionSyntax,
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in context: some MacroExpansionContext
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) throws -> ExprSyntax {
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return "1"
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}
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}
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//--- MacroLib.swift
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@freestanding(expression) public macro `public`() -> Int = #externalMacro(module: "MacroDefinition", type: "OneMacro")
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@freestanding(expression) public macro `escaped`() -> Int = #externalMacro(module: "MacroDefinition", type: "OneMacro")
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@freestanding(expression) public macro normal() -> Int = #externalMacro(module: "MacroDefinition", type: "OneMacro")
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//--- test.swift
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import MacroLib
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@freestanding(expression) public macro `class`() -> Int = #externalMacro(module: "MacroDefinition", type: "OneMacro")
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func test() {
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let _: Int = #public() // expected-error {{keyword 'public' cannot be used as an identifier here}} expected-note {{if this name is unavoidable, use backticks to escape it}}
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let _: Int = #`public`()
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let _: Int = #escaped()
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let _: Int = #`class`()
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let _: Int = #normal()
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}
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