[sending] Remove support for parsing transferring.

rdar://130253724
(cherry picked from commit 00c5e73)

Author: gottesmm

CodeGeneration/Sources/SyntaxSupport/DeclNodes.swift

@@ -469,7 +469,6 @@ public let DECL_NODES: [Node] = [
           .keyword(._resultDependsOnSelf),
           .keyword(.required),
           .keyword(.static),
-          .keyword(.transferring),
           .keyword(.unowned),
           .keyword(.weak),
           .keyword(.sending),

CodeGeneration/Sources/SyntaxSupport/ExperimentalFeatures.swift

@@ -17,7 +17,6 @@ public enum ExperimentalFeature: String, CaseIterable {
   case thenStatements
   case doExpressions
   case nonescapableTypes
-  case transferringArgsAndResults
   case borrowingSwitch
   case sendingArgsAndResults
 
@@ -32,8 +31,6 @@ public enum ExperimentalFeature: String, CaseIterable {
       return "'do' expressions"
     case .nonescapableTypes:
       return "NonEscableTypes"
-    case .transferringArgsAndResults:
-      return "TransferringArgsAndResults"
     case .borrowingSwitch:
       return "borrowing pattern matching"
     case .sendingArgsAndResults:

CodeGeneration/Sources/SyntaxSupport/KeywordSpec.swift

@@ -281,7 +281,6 @@ public enum Keyword: CaseIterable {
   case then
   case `throw`
   case `throws`
-  case transferring
   case transpose
   case `true`
   case `try`
@@ -697,11 +696,6 @@ public enum Keyword: CaseIterable {
       return KeywordSpec("throw", isLexerClassified: true)
     case .throws:
       return KeywordSpec("throws", isLexerClassified: true)
-    case .transferring:
-      return KeywordSpec(
-        "transferring",
-        experimentalFeature: .transferringArgsAndResults
-      )
     case .sending:
       return KeywordSpec(
         "sending",

CodeGeneration/Sources/SyntaxSupport/TypeNodes.swift

@@ -591,7 +591,6 @@ public let TYPE_NODES: [Node] = [
           .keyword(._const),
           .keyword(.borrowing),
           .keyword(.consuming),
-          .keyword(.transferring),
           .keyword(._resultDependsOn),
           .keyword(.sending),
         ]),

Sources/SwiftParser/Declarations.swift

@@ -23,7 +23,7 @@ extension DeclarationModifier {
       .borrowing, .class, .consuming, .convenience, .distributed, .dynamic,
       .final, .indirect, .infix, .isolated, .lazy, .mutating, .nonmutating,
       .optional, .override, .postfix, .prefix, .reasync, ._resultDependsOn, ._resultDependsOnSelf, .required,
-      .rethrows, .static, .weak, .transferring, .sending:
+      .rethrows, .static, .weak, .sending:
       return false
     case .fileprivate, .internal, .nonisolated, .package, .open, .private,
       .public, .unowned:

Sources/SwiftParser/Patterns.swift

@@ -377,7 +377,6 @@ extension Parser.Lookahead {
         && !self.at(.keyword(.__owned))
         && !self.at(.keyword(.borrowing))
         && !self.at(.keyword(.consuming))
-        && !(experimentalFeatures.contains(.transferringArgsAndResults) && self.at(.keyword(.transferring)))
         && !(experimentalFeatures.contains(.sendingArgsAndResults) && self.at(.keyword(.sending)))
         && !(experimentalFeatures.contains(.nonescapableTypes) && self.at(.keyword(._resultDependsOn)))
       {

Sources/SwiftParser/TokenPrecedence.swift

@@ -237,7 +237,7 @@ enum TokenPrecedence: Comparable {
       .__setter_access, .indirect, .isolated, .nonisolated, .distributed, ._local,
       .inout, ._mutating, ._borrow, ._borrowing, .borrowing, ._consuming, .consuming, .consume, ._resultDependsOnSelf,
       ._resultDependsOn,
-      .transferring, .dependsOn, .scoped, .sending,
+      .dependsOn, .scoped, .sending,
       // Accessors
       .get, .set, .didSet, .willSet, .unsafeAddress, .addressWithOwner, .addressWithNativeOwner, .unsafeMutableAddress,
       .mutableAddressWithOwner, .mutableAddressWithNativeOwner, ._read, ._modify,

Sources/SwiftParser/TokenSpecSet.swift

@@ -379,7 +379,6 @@ enum DeclarationModifier: TokenSpecSet {
   case `rethrows`
   case sending
   case `static`
-  case transferring
   case unowned
   case weak
   case _resultDependsOn
@@ -420,7 +419,6 @@ enum DeclarationModifier: TokenSpecSet {
     case TokenSpec(.required): self = .required
     case TokenSpec(.rethrows): self = .rethrows
     case TokenSpec(.static): self = .static
-    case TokenSpec(.transferring): self = .transferring
     case TokenSpec(.sending): self = .sending
     case TokenSpec(.unowned): self = .unowned
     case TokenSpec(.weak): self = .weak
@@ -466,7 +464,6 @@ enum DeclarationModifier: TokenSpecSet {
     case .required: return .keyword(.required)
     case .rethrows: return TokenSpec(.rethrows, recoveryPrecedence: .declKeyword)
     case .static: return .keyword(.static)
-    case .transferring: return .keyword(.transferring)
     case .sending: return .keyword(.sending)
     case .unowned: return TokenSpec(.unowned, recoveryPrecedence: .declKeyword)
     case .weak: return TokenSpec(.weak, recoveryPrecedence: .declKeyword)

Tests/SwiftParserTest/DeclarationTests.swift

@@ -3294,21 +3294,6 @@ final class DeclarationTests: ParserTestCase {
     assertParse("public init() -> Int")
   }
 
-  func testTransferringTypeSpecifier() {
-    assertParse(
-      "func testVarDeclTupleElt() -> (transferring String, String) {}",
-      experimentalFeatures: .transferringArgsAndResults
-    )
-    assertParse(
-      "func testVarDeclTuple2(_ x: (transferring String)) {}",
-      experimentalFeatures: .transferringArgsAndResults
-    )
-    assertParse(
-      "func testVarDeclTuple2(_ x: (transferring String, String)) {}",
-      experimentalFeatures: .transferringArgsAndResults
-    )
-  }
-
   func testSendingTypeSpecifier() {
     assertParse(
       "func testVarDeclTupleElt() -> (sending String, String) {}",

Tests/SwiftParserTest/TransferringTest.swift renamed to Tests/SwiftParserTest/SendingTest.swift

@@ -13,24 +13,24 @@
 @_spi(ExperimentalLanguageFeatures) import SwiftParser
 import XCTest
 
-final class TransferringTests: ParserTestCase {
-  func testTransferingArg1() {
+final class SendingTests: ParserTestCase {
+  func testSendingArg1() {
     assertParse(
       """
       class Klass {}
-      func transferMain(_ x: transferring Klass) -> ()
+      func transferMain(_ x: sending Klass) -> ()
       """,
-      experimentalFeatures: .transferringArgsAndResults
+      experimentalFeatures: .sendingArgsAndResults
     )
   }
 
-  func testTransferingArgMiddle() {
+  func testSendingArgMiddle() {
     assertParse(
       """
       class Klass {}
-      func transferMain(_ y: Klass, _ x: transferring Klass, _ z: Klass) -> ()
+      func transferMain(_ y: Klass, _ x: sending Klass, _ z: Klass) -> ()
       """,
-      experimentalFeatures: .transferringArgsAndResults
+      experimentalFeatures: .sendingArgsAndResults
     )
   }
 }