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// REQUIRES: swift_swift_parser, OS=macosx
// RUN: %empty-directory(%t)
// RUN: mkdir -p %t/src
// RUN: mkdir -p %t/plugins
// RUN: split-file %s %t/src
//#-- Prepare the macro dylib plugin.
// RUN: %host-build-swift \
// RUN: -swift-version 5 \
// RUN: -emit-library -o %t/plugins/%target-library-name(MacroDefinition) \
// RUN: -module-name MacroDefinition \
// RUN: %t/src/MacroDefinition.swift \
// RUN: -g -no-toolchain-stdlib-rpath
// RUN: %target-swift-frontend \
// RUN: -typecheck -verify \
// RUN: -enable-experimental-feature FreestandingMacros \
// RUN: -parse-as-library \
// RUN: -dump-macro-expansions \
// RUN: -plugin-path %t/plugins \
// RUN: %t/src/test.swift
//--- MacroDefinition.swift
import SwiftDiagnostics
import SwiftOperators
import SwiftSyntax
import SwiftSyntaxBuilder
import SwiftSyntaxMacros
public struct GlobalFuncAndVarMacro: DeclarationMacro {
public static func expansion(
of node: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
return ["func globalFunc() {}", "var globalVar: Int { 1 }"]
}
}
public struct MemberFuncAndVarMacro: DeclarationMacro {
public static func expansion(
of node: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
return ["func memberFunc() {}", "var memberVar: Int { 1 }"]
}
}
public struct LocalFuncAndVarMacro: DeclarationMacro {
public static func expansion(
of node: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
return ["func LocalFunc() {}", "var LocalVar: Int { 1 }"]
}
}
public struct FuncFromClosureMacro: DeclarationMacro {
public static func expansion(
of node: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
guard
let closure = node.trailingClosure,
let arg1 = node.argumentList.first?.expression else {
return []
}
return ["""
func fromClosure() {
print(\(arg1))
\(closure.statements)
}
"""]
}
}
public struct FuncFooBarNoAttrsMacro: DeclarationMacro {
public static var propagateFreestandingMacroAttributes: Bool { false }
public static var propagateFreestandingMacroModifiers: Bool { false }
public static func expansion(
of node: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
return ["func foo() -> Int { 1 }", "func bar() -> String { \"bar\" }"]
}
}
//--- test.swift
@freestanding(declaration, names: named(globalFunc), named(globalVar)) macro globalDecls() = #externalMacro(module: "MacroDefinition", type: "GlobalFuncAndVarMacro")
@freestanding(declaration, names: named(memberFunc), named(memberVar)) macro memberDecls() = #externalMacro(module: "MacroDefinition", type: "MemberFuncAndVarMacro")
@freestanding(declaration, names: named(localFunc), named(localVar)) macro localDecls() = #externalMacro(module: "MacroDefinition", type: "LocalFuncAndVarMacro")
@freestanding(declaration, names: named(foo), named(bar)) macro funcFooBarNoAttrs() = #externalMacro(module: "MacroDefinition", type: "FuncFooBarNoAttrsMacro")
@available(SwiftStdlib 9999, *)
#globalDecls
func testGlobal() { // expected-note 2 {{add @available attribute to enclosing global function}}
globalFunc() // expected-error {{'globalFunc()' is only available in macOS 9999 or newer}} expected-note {{add 'if #available' version check}}
_ = globalVar // expected-error {{'globalVar' is only available in macOS 9999 or newer}} expected-note {{add 'if #available' version check}}
}
struct S {
@available(SwiftStdlib 9999, *)
#memberDecls
}
func testMember(value: S) { // expected-note 2 {{add @available attribute to enclosing global function}}
value.memberFunc() // expected-error {{'memberFunc()' is only available in macOS 9999 or newer}} expected-note {{add 'if #available' version check}}
_ = value.memberVar // expected-error {{'memberVar' is only available in macOS 9999 or newer}} expected-note {{add 'if #available' version check}}
}
struct T {
static #memberDecls
}
func testStatic() {
T.memberFunc() // OK
_ = T.memberVar // OK
}
func testLocal() {
// FIXME(109376102): Local vars with freestanding macro is not supported yet.
#if false
#localDecls
do {
}
#endif
}
@freestanding(declaration, names: named(fromClosure)) macro funcFromClosureMacro(_: String, _: () -> Void) = #externalMacro(module: "MacroDefinition", type: "FuncFromClosureMacro")
@available(macOS 99, *)
func APIFrom99() -> String { "" }
@available(macOS 999, *)
func APIFrom999() -> String { "" }
@available(macOS 99, *)
#funcFromClosureMacro(APIFrom99()) {
_ = APIFrom99()
if #available(macOS 999, *) {
_ = APIFrom99()
_ = APIFrom999()
}
}
struct S1 {
@available(macOS 99, *)
#funcFromClosureMacro(APIFrom99()) {
_ = APIFrom99()
if #available(macOS 999, *) {
_ = APIFrom99()
_ = APIFrom999()
}
}
}
// FIXME: Diagnostics could be better.
struct S2 { // expected-note 4 {{add @available attribute to enclosing struct}}
// expected-note@+3 6 {{in expansion of macro 'funcFromClosureMacro' here}}
// expected-error@+2 {{'APIFrom99()' is only available in macOS 99 or newer}}
// expected-error@+2 {{'APIFrom99()' is only available in macOS 99 or newer}} expected-note@+2 {{add 'if #available' version check}}
#funcFromClosureMacro(APIFrom99()) {
_ = APIFrom99()
if #available(macOS 999, *) {
_ = APIFrom99()
_ = APIFrom999()
}
}
}
struct S3 {
@discardableResult private #funcFooBarNoAttrs()
}
func testS3(value: S3) {
value.foo() // expected-warning {{result of call to 'foo()' is unused}}
value.bar() // expected-warning {{result of call to 'bar()' is unused}}
}
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