Merge pull request swiftlang#71343 from tshortli/astgen-unknown-default

ASTGen: Suppress warnings about handling unknown enum cases

Author: tshortli

lib/ASTGen/CMakeLists.txt

@@ -103,6 +103,7 @@ endif()
 
 set(compile_options
   ${c_include_paths_args}
+  "SHELL: -DRESILIENT_SWIFT_SYNTAX"
   "SHELL: ${cxx_interop_flag}"
   "SHELL: -Xcc -std=c++17 -Xcc -DCOMPILED_WITH_SWIFT -Xcc -DSWIFT_TARGET"
 

lib/ASTGen/Sources/ASTGen/DeclAttrs.swift

@@ -58,6 +58,10 @@ extension ASTGenVisitor {
         addAttribute(self.generateDeclAttribute(attribute: node))
       case .ifConfigDecl:
         fatalError("unimplemented")
+#if RESILIENT_SWIFT_SYNTAX
+      @unknown default:
+        fatalError()
+#endif
       }
     }
 

lib/ASTGen/Sources/ASTGen/Decls.swift

@@ -68,6 +68,10 @@ extension ASTGenVisitor {
       return self.generate(typeAliasDecl: node).asDecl
     case .variableDecl(let node):
       return self.generate(variableDecl: node).asDecl
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
     return self.generateWithLegacy(node)
   }
@@ -421,6 +425,10 @@ extension ASTGenVisitor {
         accessors: CollectionOfOne(accessor).bridgedArray(in: self),
         rBraceLoc: rightBrace
       )
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
   }
 
@@ -726,6 +734,10 @@ extension ASTGenVisitor {
         } else {
           body.associativity = associativity
         }
+#if RESILIENT_SWIFT_SYNTAX
+      @unknown default:
+        fatalError()
+#endif
       }
     }
 

lib/ASTGen/Sources/ASTGen/DiagnosticsBridge.swift

@@ -73,6 +73,11 @@ fileprivate func emitDiagnosticParts(
       replaceStartLoc = bridgedSourceLoc(at: oldToken.endPositionBeforeTrailingTrivia)
       replaceEndLoc = bridgedSourceLoc(at: oldToken.endPosition)
       newText = newTrivia.description
+
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
 
     newText.withBridgedString { bridgedMessage in
@@ -208,6 +213,11 @@ extension SourceManager {
           at: oldToken.endPosition
         )
         newText = newTrivia.description
+
+#if RESILIENT_SWIFT_SYNTAX
+      @unknown default:
+        fatalError()
+#endif
       }
 
       newText.withBridgedString { bridgedMessage in

lib/ASTGen/Sources/ASTGen/Exprs.swift

@@ -197,6 +197,10 @@ extension ASTGenVisitor {
       preconditionFailure("should be handled in generate(sequenceExpr:)")
     case .unresolvedTernaryExpr:
       preconditionFailure("should be handled in generate(sequenceExpr:)")
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
     preconditionFailure("isExprMigrated() mismatch")
   }

lib/ASTGen/Sources/ASTGen/Generics.swift

@@ -69,6 +69,10 @@ extension ASTGenVisitor {
       case .layoutRequirement(_):
         // FIXME: Implement layout requirement translation.
         fatalError("Translation of layout requirements not implemented!")
+#if RESILIENT_SWIFT_SYNTAX
+      @unknown default:
+        fatalError()
+#endif
       }
     }
 

lib/ASTGen/Sources/ASTGen/Literals.swift

@@ -88,6 +88,10 @@ extension ASTGenVisitor {
       colonLocs = elementNodes.lazy
         .map({ self.generateSourceLoc($0.colon) })
         .bridgedArray(in: self)
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
     return .createParsed(
       self.ctx,

lib/ASTGen/Sources/ASTGen/Macros.swift

@@ -359,6 +359,10 @@ func checkMacroDefinition(
       replacementsPtr.pointee = replacementBuffer.baseAddress
       numReplacementsPtr.pointee = replacements.count
       return Int(BridgedMacroDefinitionKind.expandedMacro.rawValue)
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
   } catch let errDiags as DiagnosticsError {
     let srcMgr = SourceManager(cxxDiagnosticEngine: diagEnginePtr)
@@ -501,6 +505,9 @@ func expandFreestandingMacroIPC(
   case .expression: pluginMacroRole = .expression
   case .declaration: pluginMacroRole = .declaration
   case .codeItem: pluginMacroRole = .codeItem
+#if RESILIENT_SWIFT_SYNTAX
+  @unknown default: fatalError()
+#endif
   }
 
   // Send the message.
@@ -790,6 +797,11 @@ func expandAttachedMacroIPC(
     .declaration,
     .codeItem:
     preconditionFailure("unhandled macro role for attached macro")
+
+#if RESILIENT_SWIFT_SYNTAX
+  @unknown default:
+    fatalError()
+#endif
   }
 
   // Prepare syntax nodes to transfer.
@@ -990,6 +1002,10 @@ fileprivate extension SyntaxProtocol {
       formatted = self.formatted()
     case .disabled:
       formatted = Syntax(self)
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
     return formatted.trimmedDescription(matching: { $0.isWhitespace })
   }

lib/ASTGen/Sources/ASTGen/Patterns.swift

@@ -45,6 +45,10 @@ extension ASTGenVisitor {
       return self.generate(valueBindingPattern: node).asPattern
     case .wildcardPattern(let node):
       return self.generate(wildcardPattern: node).asPattern
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
   }
 

lib/ASTGen/Sources/ASTGen/SourceManager+MacroExpansionContext.swift

@@ -131,6 +131,11 @@ extension SourceManager.MacroExpansionContext: MacroExpansionContext {
 
     case .afterTrailingTrivia:
       rawPosition = node.endPosition
+
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
 
     let offsetWithinSyntaxNode =
@@ -164,6 +169,11 @@ extension SourceManager.MacroExpansionContext: MacroExpansionContext {
 
     case .filePath:
       break
+
+#if RESILIENT_SWIFT_SYNTAX
+    @unknown default:
+      fatalError()
+#endif
     }
 
     // Do the location lookup.