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usr / src / contrib / llvm-project / clang / include / clang / AST /

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📄 APValue.h(20.92 KB)
📄 AST.h(907 B)
📄 ASTConcept.h(7.02 KB)
📄 ASTConsumer.h(5.99 KB)
📄 ASTContext.h(122.68 KB)
📄 ASTContextAllocate.h(1.33 KB)
📄 ASTDiagnostic.h(1.34 KB)
📄 ASTDumper.h(1.59 KB)
📄 ASTDumperUtils.h(3.49 KB)
📄 ASTFwd.h(1.01 KB)
📄 ASTImporter.h(22.86 KB)
📄 ASTImporterLookupTable.h(2.7 KB)
📄 ASTImporterSharedState.h(2.51 KB)
📄 ASTLambda.h(3.04 KB)
📄 ASTMutationListener.h(5.84 KB)
📄 ASTNodeTraverser.h(21.38 KB)
📄 ASTStructuralEquivalence.h(5.08 KB)
📄 ASTTypeTraits.h(19.65 KB)
📄 ASTUnresolvedSet.h(3.37 KB)
📄 ASTVector.h(11.75 KB)
📄 AbstractBasicReader.h(8.82 KB)
📄 AbstractBasicWriter.h(7.97 KB)
📄 AbstractTypeReader.h(922 B)
📄 AbstractTypeWriter.h(944 B)
📄 Attr.h(11.87 KB)
📄 AttrIterator.h(4.14 KB)
📄 AttrVisitor.h(2.56 KB)
📄 Availability.h(1.97 KB)
📄 BaseSubobject.h(2.74 KB)
📄 BuiltinTypes.def(9.91 KB)
📄 CXXInheritance.h(14.87 KB)
📄 CXXRecordDeclDefinitionBits.def(9.23 KB)
📄 CanonicalType.h(24.86 KB)
📄 CharUnits.h(8.02 KB)
📄 Comment.h(31.03 KB)
📄 CommentBriefParser.h(1.39 KB)
📄 CommentCommandTraits.h(5.86 KB)
📄 CommentCommands.td(9.27 KB)
📄 CommentDiagnostic.h(509 B)
📄 CommentHTMLNamedCharacterReferences.td(4.98 KB)
📄 CommentHTMLTags.td(2.17 KB)
📄 CommentLexer.h(9.96 KB)
📄 CommentParser.h(3.24 KB)
📄 CommentSema.h(9.87 KB)
📄 CommentVisitor.h(2.38 KB)
📄 ComparisonCategories.h(7.41 KB)
📄 ComputeDependence.h(7.41 KB)
📄 CurrentSourceLocExprScope.h(2.43 KB)
📄 DataCollection.h(2.45 KB)
📄 Decl.h(168.07 KB)
📄 DeclAccessPair.h(1.77 KB)
📄 DeclBase.h(93.13 KB)
📄 DeclCXX.h(151.69 KB)
📄 DeclContextInternals.h(8.22 KB)
📄 DeclFriend.h(8.06 KB)
📄 DeclGroup.h(4.11 KB)
📄 DeclLookups.h(3.64 KB)
📄 DeclObjC.h(101.2 KB)
📄 DeclObjCCommon.h(1.72 KB)
📄 DeclOpenMP.h(19.33 KB)
📄 DeclTemplate.h(122.19 KB)
📄 DeclVisitor.h(2.51 KB)
📄 DeclarationName.h(33.77 KB)
📄 DependenceFlags.h(10.99 KB)
📄 DependentDiagnostic.h(5.4 KB)
📄 EvaluatedExprVisitor.h(4.45 KB)
📄 Expr.h(234.85 KB)
📄 ExprCXX.h(169.78 KB)
📄 ExprConcepts.h(19.62 KB)
📄 ExprObjC.h(58.96 KB)
📄 ExprOpenMP.h(15.48 KB)
📄 ExternalASTMerger.h(8.11 KB)
📄 ExternalASTSource.h(20.55 KB)
📄 FormatString.h(22.81 KB)
📄 GlobalDecl.h(7.16 KB)
📄 JSONNodeDumper.h(17.53 KB)
📄 LambdaCapture.h(4.71 KB)
📄 LexicallyOrderedRecursiveASTVisitor.h(5.92 KB)
📄 LocInfoType.h(1.84 KB)
📄 Mangle.h(10.65 KB)
📄 MangleNumberingContext.h(2 KB)
📄 NSAPI.h(9.23 KB)
📄 NestedNameSpecifier.h(18.53 KB)
📄 NonTrivialTypeVisitor.h(4 KB)
📄 ODRHash.h(3.42 KB)
📄 OSLog.h(5.08 KB)
📄 OpenMPClause.h(276.08 KB)
📄 OperationKinds.def(14.91 KB)
📄 OperationKinds.h(1.5 KB)
📄 OptionalDiagnostic.h(2.39 KB)
📄 ParentMap.h(1.89 KB)
📄 ParentMapContext.h(4.74 KB)
📄 PrettyDeclStackTrace.h(1.39 KB)
📄 PrettyPrinter.h(8.47 KB)
📄 PropertiesBase.td(17.03 KB)
📄 QualTypeNames.h(3.15 KB)
📄 RawCommentList.h(6.6 KB)
📄 RecordLayout.h(11.49 KB)
📄 RecursiveASTVisitor.h(124.41 KB)
📄 Redeclarable.h(14.34 KB)
📄 SelectorLocationsKind.h(3.28 KB)
📄 Stmt.h(113 KB)
📄 StmtCXX.h(17.59 KB)
📄 StmtDataCollectors.td(5.64 KB)
📄 StmtGraphTraits.h(2.18 KB)
📄 StmtIterator.h(4.2 KB)
📄 StmtObjC.h(12.86 KB)
📄 StmtOpenMP.h(189.5 KB)
📄 StmtVisitor.h(8.74 KB)
📄 TemplateArgumentVisitor.h(3.38 KB)
📄 TemplateBase.h(22.86 KB)
📄 TemplateName.h(19.34 KB)
📄 TextNodeDumper.h(15.7 KB)
📄 Type.h(248.38 KB)
📄 TypeLoc.h(73.03 KB)
📄 TypeLocNodes.def(1.45 KB)
📄 TypeLocVisitor.h(1.76 KB)
📄 TypeOrdering.h(2.38 KB)
📄 TypeProperties.td(25.87 KB)
📄 TypeVisitor.h(3.32 KB)
📄 UnresolvedSet.h(5.25 KB)
📄 VTTBuilder.h(5.19 KB)
📄 VTableBuilder.h(20.31 KB)

Editing: PropertiesBase.td

//==--- PropertiesBase.td - Baseline definitions for AST properties -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

class HasProperties;

/// The type of the property.
class PropertyType<string typeName = ""> {
  /// The C++ type name for the type.
  string CXXName = !if(!ne(typeName, ""), typeName, NAME);

/// Whether the C++ type should generally be passed around by reference.
  bit PassByReference = 0;

/// Whether `const` should be prepended to the type when writing.
  bit ConstWhenWriting = 0;

/// Given a value of type Optional<CXXName> bound as 'value', yield a
  /// CXXName that can be serialized into a DataStreamTypeWriter.
  string PackOptional = "";

/// Given a value of type CXXName bound as 'value' that was deserialized
  /// by a DataStreamTypeReader, yield an Optional<CXXName>.
  string UnpackOptional = "";

/// A list of types for which buffeers must be passed to the read
  /// operations.
  list<PropertyType> BufferElementTypes = [];
}

/// Property types that correspond to specific C++ enums.
class EnumPropertyType<string typeName = ""> : PropertyType<typeName> {}

/// Property types that correspond to a specific C++ class.
/// Supports optional values by using the null representation.
class RefPropertyType<string className> : PropertyType<className # "*"> {
  let PackOptional =
    "value ? *value : nullptr";
  let UnpackOptional =
    "value ? llvm::Optional<" # CXXName # ">(value) : llvm::None";
}

/// Property types that correspond to a specific subclass of another type.
class SubclassPropertyType<string className, PropertyType base>
    : RefPropertyType<className> {
  PropertyType Base = base;
  string SubclassName = className;
  let ConstWhenWriting = base.ConstWhenWriting;
}

/// Property types that support optional values by using their
/// default value.
class DefaultValuePropertyType<string typeName = ""> : PropertyType<typeName> {
  let PackOptional =
    "value ? *value : " # CXXName # "()";
  let UnpackOptional =
    "value.isNull() ? llvm::None : llvm::Optional<" # CXXName # ">(value)";
}

/// Property types that correspond to integer types and support optional
/// values by shifting the value over by 1.
class CountPropertyType<string typeName = ""> : PropertyType<typeName> {
  let PackOptional =
    "value ? *value + 1 : 0";
  let UnpackOptional =
    "value ? llvm::Optional<" # CXXName # ">(value - 1) : llvm::None";
}

def APInt : PropertyType<"llvm::APInt"> { let PassByReference = 1; }
def APSInt : PropertyType<"llvm::APSInt"> { let PassByReference = 1; }
def ArraySizeModifier : EnumPropertyType<"ArrayType::ArraySizeModifier">;
def AttrKind : EnumPropertyType<"attr::Kind">;
def AutoTypeKeyword : EnumPropertyType;
def Bool : PropertyType<"bool">;
def BuiltinTypeKind : EnumPropertyType<"BuiltinType::Kind">;
def CallingConv : EnumPropertyType;
def DeclarationName : PropertyType;
def DeclarationNameKind : EnumPropertyType<"DeclarationName::NameKind">;
def DeclRef : RefPropertyType<"Decl"> { let ConstWhenWriting = 1; }
  def CXXRecordDeclRef :
    SubclassPropertyType<"CXXRecordDecl", DeclRef>;
  def FunctionDeclRef :
    SubclassPropertyType<"FunctionDecl", DeclRef>;
  def NamedDeclRef :
    SubclassPropertyType<"NamedDecl", DeclRef>;
  def NamespaceDeclRef :
    SubclassPropertyType<"NamespaceDecl", DeclRef>;
  def NamespaceAliasDeclRef :
    SubclassPropertyType<"NamespaceAliasDecl", DeclRef>;
  def ObjCProtocolDeclRef :
    SubclassPropertyType<"ObjCProtocolDecl", DeclRef>;
  def ObjCTypeParamDeclRef :
    SubclassPropertyType<"ObjCTypeParamDecl", DeclRef>;
  def TagDeclRef :
    SubclassPropertyType<"TagDecl", DeclRef>;
  def TemplateDeclRef :
    SubclassPropertyType<"TemplateDecl", DeclRef>;
  def ConceptDeclRef :
    SubclassPropertyType<"ConceptDecl", DeclRef>;
  def TemplateTypeParmDeclRef :
    SubclassPropertyType<"TemplateTypeParmDecl", DeclRef>;
  def TemplateTemplateParmDeclRef :
    SubclassPropertyType<"TemplateTemplateParmDecl", DeclRef>;
  def ValueDeclRef :
    SubclassPropertyType<"ValueDecl", DeclRef>;
def ElaboratedTypeKeyword : EnumPropertyType;
def ExtParameterInfo : PropertyType<"FunctionProtoType::ExtParameterInfo">;
def Identifier : RefPropertyType<"IdentifierInfo"> { let ConstWhenWriting = 1; }
def NestedNameSpecifier : PropertyType<"NestedNameSpecifier *">;
def NestedNameSpecifierKind :
  EnumPropertyType<"NestedNameSpecifier::SpecifierKind">;
def OverloadedOperatorKind : EnumPropertyType;
def Qualifiers : PropertyType;
def QualType : DefaultValuePropertyType;
def RefQualifierKind : EnumPropertyType;
def Selector : PropertyType;
def SourceLocation : PropertyType;
def StmtRef : RefPropertyType<"Stmt"> { let ConstWhenWriting = 1; }
  def ExprRef : SubclassPropertyType<"Expr", StmtRef>;
def TemplateArgument : PropertyType;
def TemplateArgumentKind : EnumPropertyType<"TemplateArgument::ArgKind">;
def TemplateName : DefaultValuePropertyType;
def TemplateNameKind : EnumPropertyType<"TemplateName::NameKind">;
def UInt32 : CountPropertyType<"uint32_t">;
def UInt64 : CountPropertyType<"uint64_t">;
def UnaryTypeTransformKind : EnumPropertyType<"UnaryTransformType::UTTKind">;
def VectorKind : EnumPropertyType<"VectorType::VectorKind">;

def ExceptionSpecInfo : PropertyType<"FunctionProtoType::ExceptionSpecInfo"> {
  let BufferElementTypes = [ QualType ];
}

/// Arrays.  The corresponding C++ type is ArrayRef of the corresponding
/// C++ type of the element.
class Array<PropertyType element> : PropertyType {
  PropertyType Element = element;
  let BufferElementTypes = [ element ];
}

/// llvm::Optional<T>.  The corresponding C++ type is generally just the
/// corresponding C++ type of the element.
///
/// Optional<Unsigned> may restrict the range of the operand for some
/// serialization clients.
class Optional<PropertyType element> : PropertyType {
  PropertyType Element = element;
  let PassByReference = element.PassByReference;
}

/// A property of an AST node.
class Property<string name, PropertyType type> {
  HasProperties Class;
  string Name = name;
  PropertyType Type = type;

/// A function for reading the property, expressed in terms of a variable
  /// "node".
  code Read;

/// Code specifying when this property is available.  Can be defined
  /// in terms of other properties, in which case this property must be
  /// read/written after those properties.  Using this will make the
  /// value Optional when deserializing.
  ///
  /// FIXME: the emitter doesn't yet force dependent properties to be
  /// read/written later; this only works if the properties used in the
  /// condition happen to be written first.
  code Conditional = "";
}

/// A rule for declaring helper variables when read properties from a
/// value of this type.  Note that this means that this code is actually
/// run when *writing* values of this type; however, naming this
/// `ReadHelper` makes the connection to the `Read` operations on the
/// properties much clearer.
class ReadHelper<code _code> {
  HasProperties Class;

/// Code which will be run when writing objects of this type before
  /// writing any of the properties, specified in terms of a variable
  /// `node`.
  code Code = _code;
}

/// A rule for creating objects of this type.
class Creator<code create> {
  HasProperties Class;

/// A function for creating values of this kind, expressed in terms of a
  /// variable `ctx` of type `ASTContext &`.  Must also refer to all of the
  /// properties by name.
  code Create = create;
}

/// A rule which overrides some of the normal rules.
class Override {
  HasProperties Class;

/// Properties from base classes that should be ignored.
  list<string> IgnoredProperties = [];
}

/// A description of how to break a type into cases.  Providing this and
/// an exhaustive list of the cases will cause AbstractBasic{Reader,Writer}
/// to be generated with a default implementation of how to read the
/// type.
///
/// Creator rules for the cases can additionally access a variable
/// `kind` of the KindType.
class PropertyTypeKind<PropertyType type,
                       PropertyType kindType,
                       string readCode> {
  /// The type for which this describes cases.
  PropertyType Type = type;

/// The type of this type's kind enum.
  PropertyType KindType = kindType;

/// The property name to use for the kind.
  string KindPropertyName = "kind";

/// An expression which reads the kind from a value, expressed in terms
  /// of a variable `node`.
  string Read = readCode;
}

/// One of the options for representing a particular type.
class PropertyTypeCase<PropertyType type, string name> : HasProperties {
  /// The type of which this is a case.
  PropertyType Type = type;

/// The name of the case (a value of the type's kind enum).
  string Name = name;
}

// Type cases for DeclarationName.
def : PropertyTypeKind<DeclarationName, DeclarationNameKind,
                       "node.getNameKind()">;
let Class = PropertyTypeCase<DeclarationName, "Identifier"> in {
  def : Property<"identifier", Identifier> {
    let Read = [{ node.getAsIdentifierInfo() }];
  }
  def : Creator<[{
    return DeclarationName(identifier);
  }]>;
}
foreach count = ["Zero", "One", "Multi"] in {
  let Class = PropertyTypeCase<DeclarationName, "ObjC"#count#"ArgSelector"> in {
    def : Property<"selector", Selector> {
      let Read = [{ node.getObjCSelector() }];
    }
    def : Creator<[{
      return DeclarationName(selector);
    }]>;
  }
}
foreach kind = ["Constructor", "Destructor", "ConversionFunction"] in {
  let Class = PropertyTypeCase<DeclarationName, "CXX"#kind#"Name"> in {
    def : Property<"type", QualType> {
      let Read = [{ node.getCXXNameType() }];
    }
    def : Creator<[{
      return ctx.DeclarationNames.getCXX}]#kind#[{Name(
               ctx.getCanonicalType(type));
    }]>;
  }
}
let Class = PropertyTypeCase<DeclarationName, "CXXDeductionGuideName"> in {
  def : Property<"declaration", TemplateDeclRef> {
    let Read = [{ node.getCXXDeductionGuideTemplate() }];
  }
  def : Creator<[{
    return ctx.DeclarationNames.getCXXDeductionGuideName(declaration);
  }]>;
}
let Class = PropertyTypeCase<DeclarationName, "CXXOperatorName"> in {
  def : Property<"operatorKind", OverloadedOperatorKind> {
    let Read = [{ node.getCXXOverloadedOperator() }];
  }
  def : Creator<[{
    return ctx.DeclarationNames.getCXXOperatorName(operatorKind);
  }]>;
}
let Class = PropertyTypeCase<DeclarationName, "CXXLiteralOperatorName"> in {
  def : Property<"identifier", Identifier> {
    let Read = [{ node.getCXXLiteralIdentifier() }];
  }
  def : Creator<[{
    return ctx.DeclarationNames.getCXXLiteralOperatorName(identifier);
  }]>;
}
let Class = PropertyTypeCase<DeclarationName, "CXXUsingDirective"> in {
  def : Creator<[{
    return DeclarationName::getUsingDirectiveName();
  }]>;
}

// Type cases for TemplateName.
def : PropertyTypeKind<TemplateName, TemplateNameKind, "node.getKind()">;
let Class = PropertyTypeCase<TemplateName, "Template"> in {
  def : Property<"declaration", TemplateDeclRef> {
    let Read = [{ node.getAsTemplateDecl() }];
  }
  def : Creator<[{
    return TemplateName(declaration);
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "OverloadedTemplate"> in {
  def : Property<"overloads", Array<NamedDeclRef>> {
    let Read = [{ node.getAsOverloadedTemplate()->decls() }];
  }
  def : Creator<[{
    // Copy into an UnresolvedSet to satisfy the interface.
    UnresolvedSet<8> overloadSet;
    for (auto overload : overloads) {
      overloadSet.addDecl(overload);
    }

return ctx.getOverloadedTemplateName(overloadSet.begin(),
                                         overloadSet.end());
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "AssumedTemplate"> in {
  def : Property<"name", DeclarationName> {
    let Read = [{ node.getAsAssumedTemplateName()->getDeclName() }];
  }
  def : Creator<[{
    return ctx.getAssumedTemplateName(name);
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "QualifiedTemplate"> in {
  def : ReadHelper<[{
    auto qtn = node.getAsQualifiedTemplateName();
  }]>;
  def : Property<"qualifier", NestedNameSpecifier> {
    let Read = [{ qtn->getQualifier() }];
  }
  def : Property<"hasTemplateKeyword", Bool> {
    let Read = [{ qtn->hasTemplateKeyword() }];
  }
  def : Property<"declaration", TemplateDeclRef> {
    let Read = [{ qtn->getTemplateDecl() }];
  }
  def : Creator<[{
    return ctx.getQualifiedTemplateName(qualifier, hasTemplateKeyword,
                                        declaration);
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "DependentTemplate"> in {
  def : ReadHelper<[{
    auto dtn = node.getAsDependentTemplateName();
  }]>;
  def : Property<"qualifier", NestedNameSpecifier> {
    let Read = [{ dtn->getQualifier() }];
  }
  def : Property<"identifier", Optional<Identifier>> {
    let Read = [{ makeOptionalFromPointer(
                    dtn->isIdentifier()
                      ? dtn->getIdentifier()
                      : nullptr) }];
  }
  def : Property<"operatorKind", OverloadedOperatorKind> {
    let Conditional = [{ !identifier }];
    let Read = [{ dtn->getOperator() }];
  }
  def : Creator<[{
    if (identifier) {
      return ctx.getDependentTemplateName(qualifier, *identifier);
    } else {
      return ctx.getDependentTemplateName(qualifier, *operatorKind);
    }
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "SubstTemplateTemplateParm"> in {
  def : ReadHelper<[{
    auto parm = node.getAsSubstTemplateTemplateParm();
  }]>;
  def : Property<"parameter", TemplateTemplateParmDeclRef> {
    let Read = [{ parm->getParameter() }];
  }
  def : Property<"replacement", TemplateName> {
    let Read = [{ parm->getReplacement() }];
  }
  def : Creator<[{
    return ctx.getSubstTemplateTemplateParm(parameter, replacement);
  }]>;
}
let Class = PropertyTypeCase<TemplateName, "SubstTemplateTemplateParmPack"> in {
  def : ReadHelper<[{
    auto parm = node.getAsSubstTemplateTemplateParmPack();
  }]>;
  def : Property<"parameterPack", TemplateTemplateParmDeclRef> {
    let Read = [{ parm->getParameterPack() }];
  }
  def : Property<"argumentPack", TemplateArgument> {
    let Read = [{ parm->getArgumentPack() }];
  }
  def : Creator<[{
    return ctx.getSubstTemplateTemplateParmPack(parameterPack, argumentPack);
  }]>;
}

// Type cases for TemplateArgument.
def : PropertyTypeKind<TemplateArgument, TemplateArgumentKind,
                       "node.getKind()">;
let Class = PropertyTypeCase<TemplateArgument, "Null"> in {
  def : Creator<[{
    return TemplateArgument();
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Type"> in {
  def : Property<"type", QualType> {
    let Read = [{ node.getAsType() }];
  }
  def : Creator<[{
    return TemplateArgument(type);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Declaration"> in {
  def : Property<"declaration", ValueDeclRef> {
    let Read = [{ node.getAsDecl() }];
  }
  def : Property<"parameterType", QualType> {
    let Read = [{ node.getParamTypeForDecl() }];
  }
  def : Creator<[{
    return TemplateArgument(declaration, parameterType);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "NullPtr"> in {
  def : Property<"type", QualType> {
    let Read = [{ node.getNullPtrType() }];
  }
  def : Creator<[{
    return TemplateArgument(type, /*nullptr*/ true);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Integral"> in {
  def : Property<"value", APSInt> {
    let Read = [{ node.getAsIntegral() }];
  }
  def : Property<"type", QualType> {
    let Read = [{ node.getIntegralType() }];
  }
  def : Creator<[{
    return TemplateArgument(ctx, value, type);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Template"> in {
  def : Property<"name", TemplateName> {
    let Read = [{ node.getAsTemplateOrTemplatePattern() }];
  }
  def : Creator<[{
    return TemplateArgument(name);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "TemplateExpansion"> in {
  def : Property<"name", TemplateName> {
    let Read = [{ node.getAsTemplateOrTemplatePattern() }];
  }
  def : Property<"numExpansions", Optional<UInt32>> {
    let Read = [{
      // Translate unsigned -> uint32_t just in case.
      node.getNumTemplateExpansions().map(
        [](unsigned i) { return uint32_t(i); })
    }];
  }
  def : Creator<[{
    auto numExpansionsUnsigned =
      numExpansions.map([](uint32_t i) { return unsigned(i); });
    return TemplateArgument(name, numExpansionsUnsigned);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Expression"> in {
  def : Property<"expression", ExprRef> {
    let Read = [{ node.getAsExpr() }];
  }
  def : Creator<[{
    return TemplateArgument(expression);
  }]>;
}
let Class = PropertyTypeCase<TemplateArgument, "Pack"> in {
  def : Property<"elements", Array<TemplateArgument>> {
    let Read = [{ node.pack_elements() }];
  }
  def : Creator<[{
    // Copy the pack into the ASTContext.
    TemplateArgument *ctxElements = new (ctx) TemplateArgument[elements.size()];
    for (size_t i = 0, e = elements.size(); i != e; ++i)
      ctxElements[i] = elements[i];
    return TemplateArgument(llvm::makeArrayRef(ctxElements, elements.size()));
  }]>;
}

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