[CursorInfo] Annotate tuple types in fully annotated decl

We already annotate the elements, this just adds annotations around the
outer parentheses, including when the tuple is unit.

rdar://problem/25147925

Author: benlangmuir

include/swift/AST/ASTPrinter.h

@@ -69,6 +69,7 @@ enum class PrintStructureKind {
   FunctionType,
   FunctionReturnType,
   BuiltinAttribute,
+  TupleType,
   TupleElement,
   NumberLiteral,
   StringLiteral,

lib/AST/ASTPrinter.cpp

@@ -3445,6 +3445,9 @@ class TypePrinter : public TypeVisitor<TypePrinter> {
   }
 
   void visitTupleType(TupleType *T) {
+    Printer.callPrintStructurePre(PrintStructureKind::TupleType);
+    defer { Printer.printStructurePost(PrintStructureKind::TupleType); };
+
     Printer << "(";
 
     auto Fields = T->getElements();

lib/AST/TypeRepr.cpp

@@ -391,6 +391,9 @@ TupleTypeRepr *TupleTypeRepr::create(ASTContext &C,
 
 void TupleTypeRepr::printImpl(ASTPrinter &Printer,
                               const PrintOptions &Opts) const {
+  Printer.callPrintStructurePre(PrintStructureKind::TupleType);
+  defer { Printer.printStructurePost(PrintStructureKind::TupleType); };
+
   Printer << "(";
 
   for (unsigned i = 0, e = Elements.size(); i != e; ++i) {

test/SourceKit/CursorInfo/cursor_info.swift

@@ -198,6 +198,13 @@ func foo2(f: C8) {
   f.foo2()
 }
 
+func tupleInParam1(t: (Int, Int)) {}
+func tupleInParam2(t: ()) {}
+func tupleInParam2(t: () -> ()) {}
+func tupleResult1() -> (Int, Int) {}
+func tupleResult2(f: () -> Void) {}
+typealias MyVoid = ()
+
 // RUN: rm -rf %t.tmp
 // RUN: mkdir %t.tmp
 // RUN: %swiftc_driver -emit-module -o %t.tmp/FooSwiftModule.swiftmodule %S/Inputs/FooSwiftModule.swift
@@ -411,7 +418,7 @@ func foo2(f: C8) {
 // CHECK34-NEXT: s:FV11cursor_info2S23foou0_rFFT_T_FT_T_
 // CHECK34-NEXT: <T, U> (S2<T, U>) -> <V, W> (() -> ()) -> () -> ()
 // CHECK34-NEXT: <Declaration>func foo&lt;V, W&gt;(closure: () -&gt; ()) -&gt; () -&gt; ()</Declaration>
-// CHECK34-NEXT: <decl.function.method.instance><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>foo</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>V</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>W</decl.generic_type_param.name></decl.generic_type_param>&gt;(<decl.var.parameter><decl.var.parameter.name>closure</decl.var.parameter.name>: <decl.var.parameter.type>() -&gt; <decl.function.returntype>()</decl.function.returntype></decl.var.parameter.type></decl.var.parameter>) -&gt; <decl.function.returntype>() -&gt; <decl.function.returntype>()</decl.function.returntype></decl.function.returntype></decl.function.method.instance>
+// CHECK34-NEXT: <decl.function.method.instance><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>foo</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>V</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>W</decl.generic_type_param.name></decl.generic_type_param>&gt;(<decl.var.parameter><decl.var.parameter.name>closure</decl.var.parameter.name>: <decl.var.parameter.type>() -&gt; <decl.function.returntype><tuple>()</tuple></decl.function.returntype></decl.var.parameter.type></decl.var.parameter>) -&gt; <decl.function.returntype>() -&gt; <decl.function.returntype><tuple>()</tuple></decl.function.returntype></decl.function.returntype></decl.function.method.instance>
 
 // RUN: %sourcekitd-test -req=cursor -pos=83:7 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK35
 // CHECK35: source.lang.swift.decl.class (83:7-83:9)
@@ -454,7 +461,7 @@ func foo2(f: C8) {
 // CHECK40-NEXT: s:FO11cursor_info2E22C2FMS0_FT1xSi1ySS_S0_
 // CHECK40-NEXT: E2.Type -> (x: Int, y: String) -> E2
 // CHECK40-NEXT: <Declaration>case C2(x: <Type usr="s:Si">Int</Type>, y: <Type usr="s:SS">String</Type>)</Declaration>
-// CHECK40-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name>(<tuple.element><tuple.element.argument_label>x</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>y</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:SS">String</ref.struct></tuple.element.type></tuple.element>)</decl.enumelement>
+// CHECK40-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name><tuple>(<tuple.element><tuple.element.argument_label>x</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>y</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:SS">String</ref.struct></tuple.element.type></tuple.element>)</tuple></decl.enumelement>
 
 // RUN: %sourcekitd-test -req=cursor -pos=92:31 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK41
 // CHECK41: source.lang.swift.decl.enumelement (92:31-92:33)
@@ -483,13 +490,13 @@ func foo2(f: C8) {
 // CHECK44: source.lang.swift.ref.enumelement (92:8-92:10)
 // CHECK44-NEXT: C2
 // CHECK44: <Declaration>case C2(x: <Type usr="s:Si">Int</Type>, y: <Type usr="s:SS">String</Type>)</Declaration>
-// CHECK44-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name>(<tuple.element><tuple.element.argument_label>x</tuple.element.argument_label>: <tuple.element.type><ref
+// CHECK44-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name><tuple>(<tuple.element><tuple.element.argument_label>x</tuple.element.argument_label>: <tuple.element.type><ref
 
 // RUN: %sourcekitd-test -req=cursor -pos=102:16 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK45
 // CHECK45: source.lang.swift.ref.enumelement (92:8-92:10)
 // CHECK45-NEXT: C2
 // CHECK45: <Declaration>case C2(x: <Type usr="s:Si">Int</Type>, y: <Type usr="s:SS">String</Type>)</Declaration>
-// CHECK45-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name>(<tuple.element><tuple.element.argument_label>x
+// CHECK45-NEXT: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>C2</decl.name><tuple>(<tuple.element><tuple.element.argument_label>x
 
 // RUN: %sourcekitd-test -req=cursor -pos=103:16 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK46
 // CHECK46: source.lang.swift.ref.enumelement (96:8-96:9)
@@ -544,15 +551,15 @@ func foo2(f: C8) {
 
 // RUN: %sourcekitd-test -req=cursor -pos=129:5 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK57
 // CHECK57: source.lang.swift.decl.var.global (129:5-129:14)
-// CHECK57: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar1</decl.name>: <decl.var.type>(<tuple.element><tuple.element.type>(<tuple.element><tuple.element.type>(<tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>y</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>z</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</decl.var.type></decl.var.global>
+// CHECK57: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar1</decl.name>: <decl.var.type><tuple>(<tuple.element><tuple.element.type><tuple>(<tuple.element><tuple.element.type><tuple>(<tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>y</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>z</tuple.element.argument_label>: <tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple></decl.var.type></decl.var.global>
 
 // RUN: %sourcekitd-test -req=cursor -pos=130:5 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK58
 // CHECK58: source.lang.swift.decl.var.global (130:5-130:14)
-// CHECK58: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar2</decl.name>: <decl.var.type>(<tuple.element><tuple.element.argument_label>f</tuple.element.argument_label>: <tuple.element.type>() -&gt; <decl.function.returntype>()</decl.function.returntype></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>g</tuple.element.argument_label>: <tuple.element.type>(<decl.var.parameter><decl.var.parameter.argument_label>x</decl.var.parameter.argument_label>: <decl.var.parameter.type><ref.struct usr="s:Si">Int</ref.struct></decl.var.parameter.type></decl.var.parameter>) -&gt; <decl.function.returntype><ref.struct usr="s:Si">Int</ref.struct></decl.function.returntype></tuple.element.type></tuple.element>)</decl.var.type></decl.var.global>
+// CHECK58: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar2</decl.name>: <decl.var.type><tuple>(<tuple.element><tuple.element.argument_label>f</tuple.element.argument_label>: <tuple.element.type>() -&gt; <decl.function.returntype><tuple>()</tuple></decl.function.returntype></tuple.element.type></tuple.element>, <tuple.element><tuple.element.argument_label>g</tuple.element.argument_label>: <tuple.element.type>(<decl.var.parameter><decl.var.parameter.argument_label>x</decl.var.parameter.argument_label>: <decl.var.parameter.type><ref.struct usr="s:Si">Int</ref.struct></decl.var.parameter.type></decl.var.parameter>) -&gt; <decl.function.returntype><ref.struct usr="s:Si">Int</ref.struct></decl.function.returntype></tuple.element.type></tuple.element>)</tuple></decl.var.type></decl.var.global>
 
 // RUN: %sourcekitd-test -req=cursor -pos=131:5 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK59
 // CHECK59: source.lang.swift.decl.var.global (131:5-131:14)
-// CHECK59: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar3</decl.name>: <decl.var.type>(<tuple.element><tuple.element.argument_label>f</tuple.element.argument_label>: <tuple.element.type>(<decl.var.parameter><decl.var.parameter.argument_label>x</decl.var.parameter.argument_label>: <decl.var.parameter.type><syntaxtype.keyword>inout</syntaxtype.keyword> (<tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</decl.var.parameter.type></decl.var.parameter>) <syntaxtype.keyword>throws</syntaxtype.keyword> -&gt; <decl.function.returntype>()</decl.function.returntype></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</decl.var.type></decl.var.global>
+// CHECK59: <decl.var.global><syntaxtype.keyword>let</syntaxtype.keyword> <decl.name>tupleVar3</decl.name>: <decl.var.type><tuple>(<tuple.element><tuple.element.argument_label>f</tuple.element.argument_label>: <tuple.element.type>(<decl.var.parameter><decl.var.parameter.argument_label>x</decl.var.parameter.argument_label>: <decl.var.parameter.type><syntaxtype.keyword>inout</syntaxtype.keyword> <tuple>(<tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple></decl.var.parameter.type></decl.var.parameter>) <syntaxtype.keyword>throws</syntaxtype.keyword> -&gt; <decl.function.returntype><tuple>()</tuple></decl.function.returntype></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple></decl.var.type></decl.var.global>
 
 // RUN: %sourcekitd-test -req=cursor -pos=134:8 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK60
 // CHECK60: <decl.enumelement><syntaxtype.keyword>case</syntaxtype.keyword> <decl.name>A</decl.name> = <syntaxtype.number>-1</syntaxtype.number></decl.enumelement>
@@ -587,15 +594,15 @@ func foo2(f: C8) {
 // CHECK68-NEXT: s:11cursor_info7MyAlias
 // CHECK68-NEXT: MyAlias.Type
 // CHECK68-NEXT: <Declaration>typealias MyAlias&lt;T, U&gt; = (<Type usr="{{.*}}">T</Type>, <Type usr="{{.*}}">U</Type>, <Type usr="{{.*}}">T</Type>, <Type usr="{{.*}}">U</Type>)</Declaration>
-// CHECK68-NEXT: <decl.typealias><syntaxtype.keyword>typealias</syntaxtype.keyword> <decl.name>MyAlias</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>T</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>U</decl.generic_type_param.name></decl.generic_type_param>&gt; = (<tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>)</decl.typealias>
+// CHECK68-NEXT: <decl.typealias><syntaxtype.keyword>typealias</syntaxtype.keyword> <decl.name>MyAlias</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>T</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>U</decl.generic_type_param.name></decl.generic_type_param>&gt; = <tuple>(<tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>)</tuple></decl.typealias>
 
 // RUN: %sourcekitd-test -req=cursor -pos=153:28 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK69
 // CHECK69: source.lang.swift.ref.typealias (152:11-152:18)
 // CHECK69-NEXT: MyAlias
 // CHECK69-NEXT: s:11cursor_info7MyAlias
 // CHECK69-NEXT: MyAlias.Type
 // CHECK69-NEXT: <Declaration>typealias MyAlias&lt;T, U&gt; = (<Type usr="{{.*}}">T</Type>, <Type usr="{{.*}}">U</Type>, <Type usr="{{.*}}">T</Type>, <Type usr="{{.*}}">U</Type>)</Declaration>
-// CHECK69-NEXT: <decl.typealias><syntaxtype.keyword>typealias</syntaxtype.keyword> <decl.name>MyAlias</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>T</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>U</decl.generic_type_param.name></decl.generic_type_param>&gt; = (<tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>)</decl.typealias>
+// CHECK69-NEXT: <decl.typealias><syntaxtype.keyword>typealias</syntaxtype.keyword> <decl.name>MyAlias</decl.name>&lt;<decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>T</decl.generic_type_param.name></decl.generic_type_param>, <decl.generic_type_param usr="{{.*}}"><decl.generic_type_param.name>U</decl.generic_type_param.name></decl.generic_type_param>&gt; = <tuple>(<tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">T</ref.generic_type_param></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.generic_type_param usr="{{.*}}">U</ref.generic_type_param></tuple.element.type></tuple.element>)</tuple></decl.typealias>
 
 // RUN: %sourcekitd-test -req=cursor -pos=155:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck %s -check-prefix=CHECK70
 // CHECK70: <decl.var.parameter><syntaxtype.attribute.builtin><syntaxtype.attribute.name>@noescape</syntaxtype.attribute.name></syntaxtype.attribute.builtin> <decl.var.parameter.name>
@@ -649,3 +656,25 @@ func foo2(f: C8) {
 
 // CHECK78: foo1 comment from P4
 // CHECK79: foo2 comment from C1
+
+// RUN: %sourcekitd-test -req=cursor -pos=201:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK80 %s
+// CHECK80: <decl.var.parameter><decl.var.parameter.name>t</decl.var.parameter.name>: 
+// CHECK80-SAME: <decl.var.parameter.type><tuple>(
+// CHECK80-SAME:   <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>,
+// CHECK80-SAME:   <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>
+// CHECK80-SAME: )</tuple></decl.var.parameter.type></decl.var.parameter>
+
+// RUN: %sourcekitd-test -req=cursor -pos=202:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK81 %s
+// CHECK81: <decl.var.parameter.type><tuple>()</tuple>
+
+// RUN: %sourcekitd-test -req=cursor -pos=203:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK82 %s
+// CHECK82: <decl.var.parameter.type>() -&gt; <decl.function.returntype><tuple>()</tuple></decl.function.returntype></decl.var.parameter.type>
+
+// RUN: %sourcekitd-test -req=cursor -pos=204:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK83 %s
+// CHECK83: <decl.function.returntype><tuple>(<tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>, <tuple.element><tuple.element.type><ref.struct usr="s:Si">Int</ref.struct></tuple.element.type></tuple.element>)</tuple>
+
+// RUN: %sourcekitd-test -req=cursor -pos=205:6 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK84 %s
+// CHECK84: <decl.var.parameter.type>() -&gt; <decl.function.returntype><ref.typealias usr="s:s4Void">Void</ref.typealias>
+
+// RUN: %sourcekitd-test -req=cursor -pos=206:11 %s -- -F %S/../Inputs/libIDE-mock-sdk -I %t.tmp %mcp_opt %s | FileCheck -check-prefix=CHECK85 %s
+// CHECK85: <decl.typealias><syntaxtype.keyword>typealias</syntaxtype.keyword> <decl.name>MyVoid</decl.name> = <tuple>()</tuple></decl.typealias>