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d87e049cde
Always add constraints, find fixes during simplify. New separate fix for allow generic function specialization. Improve parse heuristic for isGenericTypeDisambiguatingToken. Degrade concrete type specialization fix to warning for macros.
77 lines
2.9 KiB
Swift
77 lines
2.9 KiB
Swift
// REQUIRES: swift_swift_parser
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// RUN: %empty-directory(%t)
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// RUN: %host-build-swift -swift-version 5 -emit-library -o %t/%target-library-name(MacroDefinition) -parse-as-library -module-name=MacroDefinition %S/Inputs/syntax_macro_definitions.swift -g -no-toolchain-stdlib-rpath
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// RUN: %target-typecheck-verify-swift -swift-version 5 -load-plugin-library %t/%target-library-name(MacroDefinition) -disable-availability-checking -module-name MacrosTest
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@attached(peer) macro m1() = #externalMacro(module: "MacroDefinition", type: "EmptyPeerMacro")
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@attached(peer) macro m2(_: Int) = #externalMacro(module: "MacroDefinition", type: "EmptyPeerMacro")
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// expected-note@-1{{candidate has partially matching parameter list (Int)}}
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// expected-note@-2{{candidate expects value of type 'Int' for parameter #1 (got 'String')}}
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@attached(peer) macro m2(_: Double) = #externalMacro(module: "MacroDefinition", type: "EmptyPeerMacro")
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// expected-note@-1{{candidate has partially matching parameter list (Double)}}
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// expected-note@-2{{candidate expects value of type 'Double' for parameter #1 (got 'String')}}
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@attached(peer) macro m3(message: String) = #externalMacro(module: "MacroDefinition", type: "EmptyPeerMacro")
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@freestanding(expression) macro stringify<T>(_ value: T) -> (T, String) = #externalMacro(module: "MyMacros", type: "StringifyMacro")
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// expected-warning@-1{{external macro implementation type 'MyMacros.StringifyMacro' could not be found for macro 'stringify'}}
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// expected-note@-2{{'stringify' declared here}}
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@m1 struct X1 { }
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@m2 struct X2 { } // expected-error{{no exact matches in call to macro 'm2'}}
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// Check for nesting rules.
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struct SkipNestedType {
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@propertyWrapper
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struct m1<T> {
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init() { }
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var wrappedValue: T
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}
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// We select the macro, not the property wrapper.
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@m1 var x: Int = 0
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//expected-note@-1{{did you mean 'x'?}}
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func test() {
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let _: m1<Int> = _x
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// expected-error@-1{{cannot find '_x' in scope}}
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}
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}
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struct TestMacroArgs {
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@m1("extra arg") struct Args1 {} // expected-error{{argument passed to macro expansion that takes no arguments}}
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@m2(10) struct Args2 {}
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@m2(10.0) struct Args3 {}
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@m2("") struct Args4 {} // expected-error{{no exact matches in call to macro 'm2'}}
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@m2(Nested.x) struct Args5 {}
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struct Nested {
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static let x = 10
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@m2(x) struct Args1 {}
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@m2(Nested.x) struct Args2 {}
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}
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@m3(message: stringify(Nested.x).1) struct Args6 {}
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// expected-error@-1{{expansion of macro 'stringify' requires leading '#'}}
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@m3(message: #stringify().1) struct Args7 {}
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// expected-error@-1{{missing argument for parameter #1 in macro expansion}}
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@m3(message: #stringify(Nested.x).1) struct Args8 {}
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// Allow macros to have arbitrary generic specialization lists, but warn
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// https://github.com/swiftlang/swift/issues/75500
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@m1<UInt> struct Args9 {} // expected-warning {{cannot specialize a non-generic external macro 'm1()'}}
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}
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