Remove all vestigates of the __FILE__ et al keywords

Author: DougGregor

Sources/SwiftParser/Expressions.swift

@@ -1009,36 +1009,6 @@ extension Parser {
         booleanLiteral: tok,
         arena: self.arena
       ))
-    case (.__file__Keyword, let handle)?:
-      let tok = self.eat(handle)
-      return RawExprSyntax(RawPoundFileExprSyntax(
-        poundFile: tok,
-        arena: self.arena
-      ))
-    case (.__function__Keyword, let handle)?:
-      let tok = self.eat(handle)
-      return RawExprSyntax(RawPoundFunctionExprSyntax(
-        poundFunction: tok,
-        arena: self.arena
-      ))
-    case (.__line__Keyword, let handle)?:
-      let tok = self.eat(handle)
-      return RawExprSyntax(RawPoundLineExprSyntax(
-        poundLine: tok,
-        arena: self.arena
-      ))
-    case (.__column__Keyword, let handle)?:
-      let tok = self.eat(handle)
-      return RawExprSyntax(RawPoundColumnExprSyntax(
-        poundColumn: tok,
-        arena: self.arena
-      ))
-    case (.__dso_handle__Keyword, let handle)?:
-      let tok = self.eat(handle)
-      return RawExprSyntax(RawPoundDsohandleExprSyntax(
-        poundDsohandle: tok,
-        arena: self.arena
-      ))
     case (.identifier, let handle)?, (.selfKeyword, let handle)?, (.initKeyword, let handle)?:
       // If we have "case let x." or "case let x(", we parse x as a normal
       // name, not a binding, because it is the start of an enum pattern or

Sources/SwiftParser/RawTokenKindSubset.swift

@@ -681,11 +681,6 @@ enum ParameterModifier: RawTokenKindSubset {
 }
 
 enum PrimaryExpressionStart: RawTokenKindSubset {
-  case __column__Keyword
-  case __dso_handle__Keyword
-  case __file__Keyword
-  case __function__Keyword
-  case __line__Keyword
   case anyKeyword
   case capitalSelfKeyword
   case dollarIdentifier
@@ -710,11 +705,6 @@ enum PrimaryExpressionStart: RawTokenKindSubset {
 
   init?(lexeme: Lexer.Lexeme) {
     switch lexeme.tokenKind {
-    case .__column__Keyword: self = .__column__Keyword
-    case .__dso_handle__Keyword: self = .__dso_handle__Keyword
-    case .__file__Keyword: self = .__file__Keyword
-    case .__function__Keyword: self = .__function__Keyword
-    case .__line__Keyword: self = .__line__Keyword
     case .anyKeyword: self = .anyKeyword
     case .capitalSelfKeyword: self = .capitalSelfKeyword
     case .dollarIdentifier: self = .dollarIdentifier
@@ -742,11 +732,6 @@ enum PrimaryExpressionStart: RawTokenKindSubset {
 
   var rawTokenKind: SwiftSyntax.RawTokenKind {
     switch self {
-    case .__column__Keyword: return .__column__Keyword
-    case .__dso_handle__Keyword: return .__dso_handle__Keyword
-    case .__file__Keyword: return .__file__Keyword
-    case .__function__Keyword: return .__function__Keyword
-    case .__line__Keyword: return .__line__Keyword
     case .anyKeyword: return .anyKeyword
     case .capitalSelfKeyword: return .capitalSelfKeyword
     case .dollarIdentifier: return .dollarIdentifier

Sources/SwiftParser/TokenPrecedence.swift

@@ -108,8 +108,6 @@ public enum TokenPrecedence: Comparable {
     case
       // Literals
         .capitalSelfKeyword, .falseKeyword, .floatingLiteral, .integerLiteral, .nilKeyword, .regexLiteral, .selfKeyword, .stringLiteral, .superKeyword, .trueKeyword,
-      // Legacy literals
-        .__column__Keyword, .__dso_handle__Keyword, .__file__Keyword, .__function__Keyword, .__line__Keyword,
       // Pound literals
         .poundAvailableKeyword, .poundColorLiteralKeyword, .poundColumnKeyword, .poundDsohandleKeyword, .poundFileIDKeyword, .poundFileKeyword, .poundFileLiteralKeyword, .poundFilePathKeyword, .poundFunctionKeyword, .poundImageLiteralKeyword, .poundKeyPathKeyword, .poundLineKeyword, .poundSelectorKeyword, .poundSourceLocationKeyword, .poundUnavailableKeyword, .poundHasSymbolKeyword,
       // Identifiers

Tests/SwiftSyntaxParserTest/TokenTest.swift

@@ -120,11 +120,6 @@ public class TokenTests: XCTestCase {
       TokenKind.trueKeyword,
       TokenKind.tryKeyword,
       TokenKind.throwsKeyword,
-      TokenKind.__file__Keyword,
-      TokenKind.__line__Keyword,
-      TokenKind.__column__Keyword,
-      TokenKind.__function__Keyword,
-      TokenKind.__dso_handle__Keyword,
       TokenKind.wildcardKeyword,
     ]