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3c67271869
Handle PatternBindingDecls with missing var locations, which can happen for loop iterator vars, and FuncDecls with missing name and func locations, which can happen for `defer`. Also while here make sure we set the source location of a parser-produced ErrorExpr.
75 lines
5.2 KiB
Swift
75 lines
5.2 KiB
Swift
// This test aims to show that no preference is given to either the async or
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// sync main function. The most specific, valid, main function will be
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// selected if one exists. If two main functions could exist, the usage is
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// ambiguous.
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// async main is nested deeper in protocols than sync, use sync
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// sync main is nested deeper in protocols than async, use async
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// async and sync are same level, error
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// REQUIRES: concurrency
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// ASYNC_NESTED: async is nested more deeply than sync main in protocol chain
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// NO_ASYNC: no async main function
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// NO_SYNC: no sync main function
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// BOTH: MainProtocol has both sync and async main
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// INHERIT_SYNC: main type directly conforms to synchronous main protocol
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// | has async main | has sync main | both | inherits sync | nested async | Result | | Run |
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// | | | | | | Error | No main | RUN: not %target-swift-frontend -target %target-swift-5.1-abi-triple -DNO_SYNC -DNO_ASYNC -parse-as-library -typecheck -dump-ast %s 2>&1 | %FileCheck %s --check-prefix=CHECK-IS-ERROR1
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// | x | x | x | x | | Error | Ambiguous main in MainP | RUN: not %target-swift-frontend -target %target-swift-5.1-abi-triple -DBOTH -DINHERIT_SYNC -parse-as-library -typecheck -dump-ast %s 2>&1 | %FileCheck %s --check-prefix=CHECK-IS-ERROR2
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// | | x | x | x | | Error | Ambiguous main in MainP | RUN: not %target-swift-frontend -target %target-swift-5.1-abi-triple -DBOTH -DINHERIT_SYNC -parse-as-library -typecheck -dump-ast %s 2>&1 | %FileCheck %s --check-prefix=CHECK-IS-ERROR2
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// | x | x | x | | | Async | Directly selected | RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -DBOTH -parse-as-library -typecheck -dump-ast %s | %FileCheck %s --check-prefix=CHECK-IS-ASYNC
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// | x | x | | | | Async | Directly selected | RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -parse-as-library -typecheck -dump-ast %s | %FileCheck %s --check-prefix=CHECK-IS-ASYNC
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// | | x | | | | Sync | Indirectly selected | RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -DNO_ASYNC -parse-as-library -typecheck -dump-ast %s | %FileCheck %s --check-prefix=CHECK-IS-SYNC
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// | x | x | | x | x | Sync | Directly selected | RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -DINHERIT_SYNC -DASYNC_NESTED -parse-as-library -typecheck -dump-ast %s | %FileCheck %s --check-prefix=CHECK-IS-SYNC
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// | x | | | x | x | Async | Indirectly selected | RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -DNO_SYNC -DINHERIT_SYNC -DASYNC_NESTED -parse-as-library -typecheck -dump-ast %s | %FileCheck %s --check-prefix=CHECK-IS-ASYNC
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// | x | | | x | | Error | Unrelated async main | RUN: not %target-swift-frontend -target %target-swift-5.1-abi-triple -DNO_SYNC -DINHERIT_SYNC -parse-as-library -typecheck -dump-ast %s 2>&1 | %FileCheck %s --check-prefix=CHECK-IS-ERROR1
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// | | x | | | x | Error | Unrelated sync main | RUN: not %target-swift-frontend -target %target-swift-5.1-abi-triple -DNO_ASYNC -DASYNC_NESTED -parse-as-library -typecheck -dump-ast %s 2>&1 | %FileCheck %s --check-prefix=CHECK-IS-ERROR1
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#if ASYNC_NESTED
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protocol AsyncMainProtocol { }
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protocol MainProtocol : AsyncMainProtocol { }
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#else
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protocol MainProtocol { }
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protocol AsyncMainProtocol : MainProtocol { }
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#endif
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#if NO_SYNC
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#else
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extension MainProtocol {
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static func main() { }
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}
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#endif
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#if NO_ASYNC
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#else
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extension AsyncMainProtocol {
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static func main() async { }
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}
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#endif
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#if BOTH
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extension MainProtocol {
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static func main() async { }
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}
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#endif
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#if INHERIT_SYNC
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@main struct MyMain : MainProtocol {}
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#else
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@main struct MyMain : AsyncMainProtocol {}
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#endif
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// CHECK-IS-SYNC-LABEL: "MyMain" interface_type="MyMain.Type"
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// CHECK-IS-SYNC: (func_decl {{.*}}implicit range={{.*}} "$main()" interface_type="(MyMain.Type) -> () -> ()"
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// CHECK-IS-SYNC: (declref_expr implicit type="(MyMain.Type) -> () -> ()"
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// CHECK-IS-ASYNC-LABEL: "MyMain" interface_type="MyMain.Type"
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// CHECK-IS-ASYNC: (func_decl {{.*}}implicit range={{.*}} "$main()" interface_type="(MyMain.Type) -> () async -> ()"
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// CHECK-IS-ASYNC: (declref_expr implicit type="(MyMain.Type) -> () async -> ()"
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// CHECK-IS-ERROR1: error: 'MyMain' is annotated with '@main' and must provide a main static function of type {{\(\) -> Void or \(\) throws -> Void|\(\) -> Void, \(\) throws -> Void, \(\) async -> Void, or \(\) async throws -> Void}}
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// CHECK-IS-ERROR2: error: ambiguous use of 'main'
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