Syntax: add a test for self as member to access.

Author: nkcsgexi

test/Syntax/Outputs/round_trip_parse_gen.swift.withkinds

@@ -52,6 +52,7 @@ class C <MemberDeclBlock>{<MemberDeclListItem><FunctionDecl>
     _ </DiscardAssignmentExpr><AssignmentExpr>= </AssignmentExpr><DictionaryExpr>[<DictionaryElement><StringLiteralExpr>"a"</StringLiteralExpr>: <FunctionCallExpr><IdentifierExpr>bar3</IdentifierExpr>(<FunctionCallArgument>a:<IntegerLiteralExpr>1</IntegerLiteralExpr></FunctionCallArgument>)</FunctionCallExpr>, </DictionaryElement><DictionaryElement><StringLiteralExpr>"b"</StringLiteralExpr>: <FunctionCallExpr><IdentifierExpr>bar3</IdentifierExpr>(<FunctionCallArgument>a:<IntegerLiteralExpr>1</IntegerLiteralExpr></FunctionCallArgument>)</FunctionCallExpr>, </DictionaryElement><DictionaryElement><StringLiteralExpr>"c"</StringLiteralExpr>: <FunctionCallExpr><IdentifierExpr>bar3</IdentifierExpr>(<FunctionCallArgument>a:<IntegerLiteralExpr>1</IntegerLiteralExpr></FunctionCallArgument>)</FunctionCallExpr>, </DictionaryElement><DictionaryElement><StringLiteralExpr>"d"</StringLiteralExpr>: <FunctionCallExpr><IdentifierExpr>bar3</IdentifierExpr>(<FunctionCallArgument>a:<IntegerLiteralExpr>1</IntegerLiteralExpr></FunctionCallArgument>)</FunctionCallExpr></DictionaryElement>]</DictionaryExpr></SequenceExpr><FunctionCallExpr><IdentifierExpr>
     foo</IdentifierExpr>(<FunctionCallArgument><NilLiteralExpr>nil</NilLiteralExpr>, </FunctionCallArgument><FunctionCallArgument><NilLiteralExpr>nil</NilLiteralExpr>, </FunctionCallArgument><FunctionCallArgument><NilLiteralExpr>nil</NilLiteralExpr></FunctionCallArgument>)</FunctionCallExpr><SequenceExpr><DiscardAssignmentExpr>
     _ </DiscardAssignmentExpr><AssignmentExpr>= </AssignmentExpr><MemberAccessExpr><FunctionCallExpr><IdentifierExpr>type</IdentifierExpr>(<FunctionCallArgument>of: <IdentifierExpr>a</IdentifierExpr></FunctionCallArgument>)</FunctionCallExpr>.self</MemberAccessExpr></SequenceExpr><SequenceExpr><DiscardAssignmentExpr>
+    _ </DiscardAssignmentExpr><AssignmentExpr>= </AssignmentExpr><MemberAccessExpr><IdentifierExpr>a</IdentifierExpr>.`self`</MemberAccessExpr></SequenceExpr><SequenceExpr><DiscardAssignmentExpr>
     _ </DiscardAssignmentExpr><AssignmentExpr>= </AssignmentExpr><IdentifierExpr>A </IdentifierExpr><ArrowExpr>-> </ArrowExpr><MemberAccessExpr><IdentifierExpr>B</IdentifierExpr>.C</MemberAccessExpr><BinaryOperatorExpr><</BinaryOperatorExpr><PostfixUnaryExpr><IdentifierExpr>Int</IdentifierExpr>></PostfixUnaryExpr></SequenceExpr><SequenceExpr><DiscardAssignmentExpr>
     _ </DiscardAssignmentExpr><AssignmentExpr>= </AssignmentExpr><FunctionCallExpr><ArrayExpr>[<ArrayElement><SequenceExpr><TupleExpr>(<TupleElement><IdentifierExpr>A</IdentifierExpr></TupleElement>) </TupleExpr><ArrowExpr>throws -> </ArrowExpr><IdentifierExpr>B</IdentifierExpr></SequenceExpr></ArrayElement>]</ArrayExpr>()</FunctionCallExpr></SequenceExpr>
   }</CodeBlock></FunctionDecl></MemberDeclListItem><MemberDeclListItem><FunctionDecl>

test/Syntax/round_trip_parse_gen.swift

@@ -52,6 +52,7 @@ class C {
     _ = ["a": bar3(a:1), "b": bar3(a:1), "c": bar3(a:1), "d": bar3(a:1)]
     foo(nil, nil, nil)
     _ = type(of: a).self
+    _ = a.`self`
     _ = A -> B.C<Int>
     _ = [(A) throws -> B]()
   }