#include "clang/Sema/TemplateDeduction.h"#include "TreeTransform.h"#include "TypeLocBuilder.h"#include "clang/AST/ASTContext.h"#include "clang/AST/ASTLambda.h"#include "clang/AST/Decl.h"#include "clang/AST/DeclAccessPair.h"#include "clang/AST/DeclBase.h"#include "clang/AST/DeclCXX.h"#include "clang/AST/DeclTemplate.h"#include "clang/AST/DeclarationName.h"#include "clang/AST/Expr.h"#include "clang/AST/ExprCXX.h"#include "clang/AST/NestedNameSpecifier.h"#include "clang/AST/TemplateBase.h"#include "clang/AST/TemplateName.h"#include "clang/AST/Type.h"#include "clang/AST/TypeLoc.h"#include "clang/AST/UnresolvedSet.h"#include "clang/Basic/AddressSpaces.h"#include "clang/Basic/ExceptionSpecificationType.h"#include "clang/Basic/LLVM.h"#include "clang/Basic/LangOptions.h"#include "clang/Basic/PartialDiagnostic.h"#include "clang/Basic/SourceLocation.h"#include "clang/Basic/Specifiers.h"#include "clang/Sema/Ownership.h"#include "clang/Sema/Sema.h"#include "clang/Sema/Template.h"#include "llvm/ADT/APInt.h"#include "llvm/ADT/APSInt.h"#include "llvm/ADT/ArrayRef.h"#include "llvm/ADT/DenseMap.h"#include "llvm/ADT/FoldingSet.h"#include "llvm/ADT/Optional.h"#include "llvm/ADT/SmallBitVector.h"#include "llvm/ADT/SmallPtrSet.h"#include "llvm/ADT/SmallVector.h"#include "llvm/Support/Casting.h"#include "llvm/Support/Compiler.h"#include "llvm/Support/ErrorHandling.h"#include <algorithm>#include <cassert>#include <tuple>#include <utility>#include "clang/AST/TypeNodes.def"
Go to the source code of this file.
Classes | |
| struct | clang::DeducedPack |
| A pack that we're currently deducing. More... | |
| struct | IsPartialSpecialization< T > |
| struct | IsPartialSpecialization< ClassTemplatePartialSpecializationDecl > |
| struct | IsPartialSpecialization< VarTemplatePartialSpecializationDecl > |
Namespaces | |
| clang | |
| Dataflow Directional Tag Classes. | |
Macros | |
| #define | NON_CANONICAL_TYPE(Class, Base) case Type::Class: llvm_unreachable("deducing non-canonical type: " #Class); |
| #define | TYPE(Class, Base) |
| #define | TYPE(Class, Base) |
| #define | ABSTRACT_TYPE(Class, Base) |
| #define | DEPENDENT_TYPE(Class, Base) |
| #define | NON_CANONICAL_TYPE(Class, Base) case Type::Class: |
Enumerations | |
| enum | clang::TemplateDeductionFlags { clang::TDF_None = 0, clang::TDF_ParamWithReferenceType = 0x1, clang::TDF_IgnoreQualifiers = 0x02, clang::TDF_DerivedClass = 0x04, clang::TDF_SkipNonDependent = 0x08, clang::TDF_TopLevelParameterTypeList = 0x10, clang::TDF_AllowCompatibleFunctionType = 0x20, clang::TDF_ArgWithReferenceType = 0x40 } |
| Various flags that control template argument deduction. More... | |
Functions | |
| static bool | hasSameExtendedValue (llvm::APSInt X, llvm::APSInt Y) |
| Compare two APSInts, extending and switching the sign as necessary to compare their values regardless of underlying type. More... | |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, const TemplateArgument &Param, TemplateArgument Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| static Sema::TemplateDeductionResult | DeduceTemplateArgumentsByTypeMatch (Sema &S, TemplateParameterList *TemplateParams, QualType ParamIn, QualType ArgIn, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, unsigned TDF, bool PartialOrdering, bool DeducedFromArrayBound) |
| Deduce the template arguments by comparing the parameter type and the argument type (C++ [temp.deduct.type]). More... | |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, ArrayRef< TemplateArgument > Params, ArrayRef< TemplateArgument > Args, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, bool NumberOfArgumentsMustMatch) |
| static void | MarkUsedTemplateParameters (ASTContext &Ctx, const TemplateArgument &TemplateArg, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used) |
| Mark the template parameters that are used by this template argument. More... | |
| static void | MarkUsedTemplateParameters (ASTContext &Ctx, QualType T, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used) |
| Mark the template parameters that are used by the given type. More... | |
| static NonTypeTemplateParmDecl * | getDeducedParameterFromExpr (TemplateDeductionInfo &Info, Expr *E) |
| If the given expression is of a form that permits the deduction of a non-type template parameter, return the declaration of that non-type template parameter. More... | |
| static bool | isSameDeclaration (Decl *X, Decl *Y) |
| Determine whether two declaration pointers refer to the same declaration. More... | |
| static DeducedTemplateArgument | checkDeducedTemplateArguments (ASTContext &Context, const DeducedTemplateArgument &X, const DeducedTemplateArgument &Y) |
| Verify that the given, deduced template arguments are compatible. More... | |
| static Sema::TemplateDeductionResult | DeduceNonTypeTemplateArgument (Sema &S, TemplateParameterList *TemplateParams, NonTypeTemplateParmDecl *NTTP, const DeducedTemplateArgument &NewDeduced, QualType ValueType, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the value of the given non-type template parameter as the given deduced template argument. More... | |
| static Sema::TemplateDeductionResult | DeduceNonTypeTemplateArgument (Sema &S, TemplateParameterList *TemplateParams, NonTypeTemplateParmDecl *NTTP, const llvm::APSInt &Value, QualType ValueType, bool DeducedFromArrayBound, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the value of the given non-type template parameter from the given integral constant. More... | |
| static Sema::TemplateDeductionResult | DeduceNullPtrTemplateArgument (Sema &S, TemplateParameterList *TemplateParams, NonTypeTemplateParmDecl *NTTP, QualType NullPtrType, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the value of the given non-type template parameter from the given null pointer template argument type. More... | |
| static Sema::TemplateDeductionResult | DeduceNonTypeTemplateArgument (Sema &S, TemplateParameterList *TemplateParams, NonTypeTemplateParmDecl *NTTP, Expr *Value, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the value of the given non-type template parameter from the given type- or value-dependent expression. More... | |
| static Sema::TemplateDeductionResult | DeduceNonTypeTemplateArgument (Sema &S, TemplateParameterList *TemplateParams, NonTypeTemplateParmDecl *NTTP, ValueDecl *D, QualType T, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the value of the given non-type template parameter from the given declaration. More... | |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, TemplateName Param, TemplateName Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, const TemplateSpecializationType *Param, QualType Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| Deduce the template arguments by comparing the template parameter type (which is a template-id) with the template argument type. More... | |
| static bool | IsPossiblyOpaquelyQualifiedType (QualType T) |
| Determines whether the given type is an opaque type that might be more qualified when instantiated. More... | |
| static TemplateParameter | makeTemplateParameter (Decl *D) |
| Helper function to build a TemplateParameter when we don't know its type statically. More... | |
| static Optional< unsigned > | getExpandedPackSize (NamedDecl *Param) |
If Param is an expanded parameter pack, get the number of expansions. More... | |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, const QualType *Params, unsigned NumParams, const QualType *Args, unsigned NumArgs, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, unsigned TDF, bool PartialOrdering=false) |
| Deduce the template arguments by comparing the list of parameter types to the list of argument types, as in the parameter-type-lists of function types (C++ [temp.deduct.type]p10). More... | |
| static bool | hasInconsistentOrSupersetQualifiersOf (QualType ParamType, QualType ArgType) |
| Determine whether the parameter has qualifiers that the argument lacks. More... | |
| static unsigned | getFirstInnerIndex (FunctionTemplateDecl *FTD) |
| Get the index of the first template parameter that was originally from the innermost template-parameter-list. More... | |
| static bool | isForwardingReference (QualType Param, unsigned FirstInnerIndex) |
| Determine whether a type denotes a forwarding reference. More... | |
| static bool | hasTemplateArgumentForDeduction (ArrayRef< TemplateArgument > &Args, unsigned &ArgIdx) |
| Determine whether there is a template argument to be used for deduction. More... | |
| static bool | hasPackExpansionBeforeEnd (ArrayRef< TemplateArgument > Args) |
| Determine whether the given set of template arguments has a pack expansion that is not the last template argument. More... | |
| static Sema::TemplateDeductionResult | DeduceTemplateArguments (Sema &S, TemplateParameterList *TemplateParams, const TemplateArgumentList &ParamList, const TemplateArgumentList &ArgList, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced) |
| static bool | isSameTemplateArg (ASTContext &Context, TemplateArgument X, const TemplateArgument &Y, bool PackExpansionMatchesPack=false) |
| Determine whether two template arguments are the same. More... | |
| static bool | ConvertDeducedTemplateArgument (Sema &S, NamedDecl *Param, DeducedTemplateArgument Arg, NamedDecl *Template, TemplateDeductionInfo &Info, bool IsDeduced, SmallVectorImpl< TemplateArgument > &Output) |
| Convert the given deduced template argument and add it to the set of fully-converted template arguments. More... | |
| template<typename TemplateDeclT > | |
| static Sema::TemplateDeductionResult | ConvertDeducedTemplateArguments (Sema &S, TemplateDeclT *Template, bool IsDeduced, SmallVectorImpl< DeducedTemplateArgument > &Deduced, TemplateDeductionInfo &Info, SmallVectorImpl< TemplateArgument > &Builder, LocalInstantiationScope *CurrentInstantiationScope=nullptr, unsigned NumAlreadyConverted=0, bool PartialOverloading=false) |
| static DeclContext * | getAsDeclContextOrEnclosing (Decl *D) |
| template<typename T > | |
| static std::enable_if< IsPartialSpecialization< T >::value, Sema::TemplateDeductionResult >::type | FinishTemplateArgumentDeduction (Sema &S, T *Partial, bool IsPartialOrdering, const TemplateArgumentList &TemplateArgs, SmallVectorImpl< DeducedTemplateArgument > &Deduced, TemplateDeductionInfo &Info) |
| Complete template argument deduction for a partial specialization. More... | |
| static Sema::TemplateDeductionResult | FinishTemplateArgumentDeduction (Sema &S, TemplateDecl *Template, bool PartialOrdering, const TemplateArgumentList &TemplateArgs, SmallVectorImpl< DeducedTemplateArgument > &Deduced, TemplateDeductionInfo &Info) |
| Complete template argument deduction for a class or variable template, when partial ordering against a partial specialization. More... | |
| static bool | isSimpleTemplateIdType (QualType T) |
| Determine whether the given type T is a simple-template-id type. More... | |
| static Sema::TemplateDeductionResult | CheckOriginalCallArgDeduction (Sema &S, TemplateDeductionInfo &Info, Sema::OriginalCallArg OriginalArg, QualType DeducedA) |
| Check whether the deduced argument type for a call to a function template matches the actual argument type per C++ [temp.deduct.call]p4. More... | |
| static unsigned | getPackIndexForParam (Sema &S, FunctionTemplateDecl *FunctionTemplate, const MultiLevelTemplateArgumentList &Args, unsigned ParamIdx) |
| Find the pack index for a particular parameter index in an instantiation of a function template with specific arguments. More... | |
| static QualType | GetTypeOfFunction (Sema &S, const OverloadExpr::FindResult &R, FunctionDecl *Fn) |
| Gets the type of a function for template-argument-deducton purposes when it's considered as part of an overload set. More... | |
| static QualType | ResolveOverloadForDeduction (Sema &S, TemplateParameterList *TemplateParams, Expr *Arg, QualType ParamType, bool ParamWasReference) |
| Apply the deduction rules for overload sets. More... | |
| static bool | AdjustFunctionParmAndArgTypesForDeduction (Sema &S, TemplateParameterList *TemplateParams, unsigned FirstInnerIndex, QualType &ParamType, QualType &ArgType, Expr *Arg, unsigned &TDF) |
| Perform the adjustments to the parameter and argument types described in C++ [temp.deduct.call]. More... | |
| static bool | hasDeducibleTemplateParameters (Sema &S, FunctionTemplateDecl *FunctionTemplate, QualType T) |
| static Sema::TemplateDeductionResult | DeduceTemplateArgumentsFromCallArgument (Sema &S, TemplateParameterList *TemplateParams, unsigned FirstInnerIndex, QualType ParamType, Expr *Arg, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, SmallVectorImpl< Sema::OriginalCallArg > &OriginalCallArgs, bool DecomposedParam, unsigned ArgIdx, unsigned TDF) |
| Perform template argument deduction per [temp.deduct.call] for a single parameter / argument pair. More... | |
| static Sema::TemplateDeductionResult | DeduceFromInitializerList (Sema &S, TemplateParameterList *TemplateParams, QualType AdjustedParamType, InitListExpr *ILE, TemplateDeductionInfo &Info, SmallVectorImpl< DeducedTemplateArgument > &Deduced, SmallVectorImpl< Sema::OriginalCallArg > &OriginalCallArgs, unsigned ArgIdx, unsigned TDF) |
| Attempt template argument deduction from an initializer list deemed to be an argument in a function call. More... | |
| static bool | diagnoseAutoDeductionFailure (Sema &S, Sema::TemplateDeductionResult TDK, TemplateDeductionInfo &Info, ArrayRef< SourceRange > Ranges) |
| Attempt to produce an informative diagostic explaining why auto deduction failed. More... | |
| static void | AddImplicitObjectParameterType (ASTContext &Context, CXXMethodDecl *Method, SmallVectorImpl< QualType > &ArgTypes) |
| If this is a non-static member function,. More... | |
| static bool | isAtLeastAsSpecializedAs (Sema &S, SourceLocation Loc, FunctionTemplateDecl *FT1, FunctionTemplateDecl *FT2, TemplatePartialOrderingContext TPOC, unsigned NumCallArguments1) |
Determine whether the function template FT1 is at least as specialized as FT2. More... | |
| static bool | isVariadicFunctionTemplate (FunctionTemplateDecl *FunTmpl) |
| Determine whether this a function template whose parameter-type-list ends with a function parameter pack. More... | |
| static bool | isSameTemplate (TemplateDecl *T1, TemplateDecl *T2) |
| Determine if the two templates are equivalent. More... | |
| template<typename TemplateLikeDecl > | |
| static bool | isAtLeastAsSpecializedAs (Sema &S, QualType T1, QualType T2, TemplateLikeDecl *P2, TemplateDeductionInfo &Info) |
| Determine whether one partial specialization, P1, is at least as specialized than another, P2. More... | |
| static void | MarkUsedTemplateParameters (ASTContext &Ctx, const Expr *E, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used) |
| Mark the template parameters that are used by the given expression. More... | |
| static void | MarkUsedTemplateParameters (ASTContext &Ctx, NestedNameSpecifier *NNS, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used) |
| Mark the template parameters that are used by the given nested name specifier. More... | |
| static void | MarkUsedTemplateParameters (ASTContext &Ctx, TemplateName Name, bool OnlyDeduced, unsigned Depth, llvm::SmallBitVector &Used) |
| Mark the template parameters that are used by the given template name. More... | |
Macro Definition Documentation
◆ ABSTRACT_TYPE
| #define ABSTRACT_TYPE | ( | Class, | |
| Base | |||
| ) |
◆ DEPENDENT_TYPE
| #define DEPENDENT_TYPE | ( | Class, | |
| Base | |||
| ) |
◆ NON_CANONICAL_TYPE [1/2]
| #define NON_CANONICAL_TYPE | ( | Class, | |
| Base | |||
| ) | case Type::Class: llvm_unreachable("deducing non-canonical type: " #Class); |
◆ NON_CANONICAL_TYPE [2/2]
| #define NON_CANONICAL_TYPE | ( | Class, | |
| Base | |||
| ) | case Type::Class: |
◆ TYPE [1/2]
| #define TYPE | ( | Class, | |
| Base | |||
| ) |
◆ TYPE [2/2]
| #define TYPE | ( | Class, | |
| Base | |||
| ) |
Function Documentation
◆ AddImplicitObjectParameterType()
|
static |
If this is a non-static member function,.
Definition at line 4671 of file SemaTemplateDeduction.cpp.
Referenced by isAtLeastAsSpecializedAs().
◆ AdjustFunctionParmAndArgTypesForDeduction()
|
static |
Perform the adjustments to the parameter and argument types described in C++ [temp.deduct.call].
- Returns
- true if the caller should not attempt to perform any template argument deduction based on this P/A pair because the argument is an overloaded function set that could not be resolved.
Definition at line 3575 of file SemaTemplateDeduction.cpp.
References clang::Sema::completeExprArrayBound(), clang::Sema::Context, DeduceTemplateArgumentsFromCallArgument(), clang::ASTContext::getArrayDecayedType(), clang::Type::getAs(), clang::ASTContext::getLValueReferenceType(), clang::PointerType::getPointeeType(), clang::ReferenceType::getPointeeType(), clang::ASTContext::getPointerType(), clang::Expr::getType(), clang::QualType::getUnqualifiedType(), hasDeducibleTemplateParameters(), clang::QualType::hasQualifiers(), clang::Type::isArrayType(), isForwardingReference(), clang::Type::isFunctionType(), clang::Type::isIncompleteArrayType(), clang::Expr::isLValue(), clang::Type::isMemberPointerType(), clang::QualType::isNull(), clang::Type::isObjCObjectPointerType(), clang::Type::isPointerType(), isSimpleTemplateIdType(), clang::ASTContext::OverloadTy, ResolveOverloadForDeduction(), clang::TDF_DerivedClass, clang::TDF_IgnoreQualifiers, clang::TDF_ParamWithReferenceType, and clang::TDF_SkipNonDependent.
Referenced by DeduceTemplateArgumentsFromCallArgument().
◆ checkDeducedTemplateArguments()
|
static |
Verify that the given, deduced template arguments are compatible.
- Returns
- The deduced template argument, or a NULL template argument if the deduced template arguments were incompatible.
Definition at line 213 of file SemaTemplateDeduction.cpp.
Referenced by DeduceNonTypeTemplateArgument(), and DeduceTemplateArguments().
◆ CheckOriginalCallArgDeduction()
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static |
Check whether the deduced argument type for a call to a function template matches the actual argument type per C++ [temp.deduct.call]p4.
Definition at line 3154 of file SemaTemplateDeduction.cpp.
◆ ConvertDeducedTemplateArgument()
|
static |
Convert the given deduced template argument and add it to the set of fully-converted template arguments.
Definition at line 2507 of file SemaTemplateDeduction.cpp.
References clang::Sema::CheckTemplateArgument(), clang::Sema::Context, clang::TemplateArgument::CreatePackCopy(), clang::Sema::CTAK_Deduced, clang::Sema::CTAK_DeducedFromArrayBound, clang::Sema::CTAK_Specified, clang::Sema::CurContext, clang::Sema::Diag(), clang::SourceRange::getEnd(), clang::TemplateArgument::getKind(), clang::sema::TemplateDeductionInfo::getLocation(), clang::Decl::getLocation(), clang::Decl::getSourceRange(), clang::Sema::getTrivialTemplateArgumentLoc(), clang::TemplateArgumentList::OnStack, P, clang::TemplateArgument::Pack, clang::TemplateArgument::pack_elements(), clang::DeducedTemplateArgument::setDeducedFromArrayBound(), clang::Sema::SubstDecl(), clang::Sema::SubstType(), and clang::DeducedTemplateArgument::wasDeducedFromArrayBound().
◆ ConvertDeducedTemplateArguments()
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static |
Definition at line 2598 of file SemaTemplateDeduction.cpp.
◆ DeduceFromInitializerList()
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static |
Attempt template argument deduction from an initializer list deemed to be an argument in a function call.
Definition at line 3678 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, DeduceNonTypeTemplateArgument(), DeduceTemplateArgumentsFromCallArgument(), clang::ASTContext::getAsArrayType(), getDeducedParameterFromExpr(), clang::ASTContext::getIntWidth(), clang::InitListExpr::getNumInits(), clang::ASTContext::getSizeType(), clang::InitListExpr::inits(), clang::Type::isDependentType(), clang::Sema::isStdInitializerList(), and clang::Sema::TDK_Success.
Referenced by DeduceTemplateArgumentsFromCallArgument().
◆ DeduceNonTypeTemplateArgument() [1/4]
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static |
Deduce the value of the given non-type template parameter as the given deduced template argument.
All non-type template parameter deduction is funneled through here.
Definition at line 374 of file SemaTemplateDeduction.cpp.
References checkDeducedTemplateArguments(), clang::Sema::Context, DeduceTemplateArgumentsByTypeMatch(), clang::sema::TemplateDeductionInfo::FirstArg, clang::ASTContext::getAdjustedParameterType(), clang::sema::TemplateDeductionInfo::getDeducedDepth(), clang::TemplateParmPosition::getDepth(), clang::TemplateParmPosition::getIndex(), clang::Sema::getLangOpts(), clang::QualType::getNonReferenceType(), clang::ValueDecl::getType(), clang::NonTypeTemplateParmDecl::isExpandedParameterPack(), clang::sema::TemplateDeductionInfo::Param, clang::sema::TemplateDeductionInfo::SecondArg, clang::TDF_SkipNonDependent, clang::Sema::TDK_Inconsistent, clang::Sema::TDK_Success, and clang::DeducedTemplateArgument::wasDeducedFromArrayBound().
Referenced by DeduceFromInitializerList(), DeduceNonTypeTemplateArgument(), DeduceNullPtrTemplateArgument(), and DeduceTemplateArguments().
◆ DeduceNonTypeTemplateArgument() [2/4]
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static |
Deduce the value of the given non-type template parameter from the given integral constant.
Definition at line 421 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, and DeduceNonTypeTemplateArgument().
◆ DeduceNonTypeTemplateArgument() [3/4]
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static |
Deduce the value of the given non-type template parameter from the given type- or value-dependent expression.
- Returns
- true if deduction succeeded, false otherwise.
Definition at line 454 of file SemaTemplateDeduction.cpp.
References DeduceNonTypeTemplateArgument(), and clang::Expr::getType().
◆ DeduceNonTypeTemplateArgument() [4/4]
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Deduce the value of the given non-type template parameter from the given declaration.
- Returns
- true if deduction succeeded, false otherwise.
Definition at line 467 of file SemaTemplateDeduction.cpp.
References DeduceNonTypeTemplateArgument(), and clang::Decl::getCanonicalDecl().
◆ DeduceNullPtrTemplateArgument()
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static |
Deduce the value of the given non-type template parameter from the given null pointer template argument type.
Definition at line 435 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, DeduceNonTypeTemplateArgument(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Decl::getLocation(), clang::Expr::getType(), clang::Sema::ImpCastExprToType(), and clang::ASTContext::NullPtrTy.
Referenced by DeduceTemplateArguments().
◆ DeduceTemplateArguments() [1/6]
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static |
Definition at line 2117 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, clang::TemplateArgument::Declaration, DeduceNonTypeTemplateArgument(), DeduceNullPtrTemplateArgument(), DeduceTemplateArgumentsByTypeMatch(), clang::TemplateArgument::Expression, clang::sema::TemplateDeductionInfo::FirstArg, clang::TemplateArgument::getAsDecl(), clang::TemplateArgument::getAsExpr(), clang::TemplateArgument::getAsIntegral(), clang::TemplateArgument::getAsTemplate(), clang::TemplateArgument::getAsType(), getDeducedParameterFromExpr(), clang::TemplateArgument::getIntegralType(), clang::TemplateArgument::getKind(), clang::TemplateArgument::getNullPtrType(), clang::TemplateArgument::getPackExpansionPattern(), clang::TemplateArgument::getParamTypeForDecl(), hasSameExtendedValue(), clang::ASTContext::hasSameType(), clang::TemplateArgument::Integral, clang::TemplateArgument::isPackExpansion(), isSameDeclaration(), clang::TemplateArgument::Null, clang::TemplateArgument::NullPtr, clang::TemplateArgument::Pack, clang::sema::TemplateDeductionInfo::SecondArg, clang::Sema::TDK_NonDeducedMismatch, clang::Sema::TDK_Success, clang::TemplateArgument::Template, clang::TemplateArgument::TemplateExpansion, and clang::TemplateArgument::Type.
Referenced by DeduceTemplateArguments(), clang::Sema::DeduceTemplateArguments(), hasSameExtendedValue(), isAtLeastAsSpecializedAs(), and clang::Sema::ResolveSingleFunctionTemplateSpecialization().
◆ DeduceTemplateArguments() [2/6]
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static |
◆ DeduceTemplateArguments() [3/6]
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static |
Definition at line 479 of file SemaTemplateDeduction.cpp.
References checkDeducedTemplateArguments(), clang::Sema::Context, clang::sema::TemplateDeductionInfo::FirstArg, clang::TemplateName::getAsTemplateDecl(), clang::ASTContext::getCanonicalTemplateName(), clang::sema::TemplateDeductionInfo::getDeducedDepth(), clang::ASTContext::hasSameTemplateName(), clang::sema::TemplateDeductionInfo::Param, clang::sema::TemplateDeductionInfo::SecondArg, clang::Sema::TDK_Inconsistent, clang::Sema::TDK_NonDeducedMismatch, and clang::Sema::TDK_Success.
◆ DeduceTemplateArguments() [4/6]
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static |
Deduce the template arguments by comparing the template parameter type (which is a template-id) with the template argument type.
- Parameters
-
S the Sema TemplateParams the template parameters that we are deducing Param the parameter type Arg the argument type Info information about the template argument deduction itself Deduced the deduced template arguments
- Returns
- the result of template argument deduction so far. Note that a "success" result means that template argument deduction has not yet failed, but it may still fail, later, for other reasons.
Definition at line 542 of file SemaTemplateDeduction.cpp.
References clang::TemplateArgumentList::asArray(), DeduceTemplateArguments(), clang::sema::TemplateDeductionInfo::FirstArg, clang::ClassTemplateSpecializationDecl::getSpecializedTemplate(), clang::ClassTemplateSpecializationDecl::getTemplateArgs(), clang::TemplateSpecializationType::getTemplateName(), clang::QualType::isCanonical(), clang::sema::TemplateDeductionInfo::SecondArg, clang::Sema::TDK_NonDeducedMismatch, and clang::TemplateSpecializationType::template_arguments().
◆ DeduceTemplateArguments() [5/6]
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static |
Deduce the template arguments by comparing the list of parameter types to the list of argument types, as in the parameter-type-lists of function types (C++ [temp.deduct.type]p10).
- Parameters
-
S The semantic analysis object within which we are deducing TemplateParams The template parameters that we are deducing Params The list of parameter types NumParams The number of types in ParamsArgs The list of argument types NumArgs The number of types in ArgsInfo information about the template argument deduction itself Deduced the deduced template arguments TDF bitwise OR of the TemplateDeductionFlags bits that describe how template argument deduction is performed. PartialOrdering If true, we are performing template argument deduction for during partial ordering for a call (C++0x [temp.deduct.partial]).
- Returns
- the result of template argument deduction so far. Note that a "success" result means that template argument deduction has not yet failed, but it may still fail, later, for other reasons.
Definition at line 1002 of file SemaTemplateDeduction.cpp.
References DeduceTemplateArgumentsByTypeMatch(), clang::PackExpansionType::getNumExpansions(), clang::PackExpansionType::getPattern(), clang::PartialOrdering, clang::Sema::TDK_MiscellaneousDeductionFailure, and clang::Sema::TDK_Success.
◆ DeduceTemplateArguments() [6/6]
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static |
Definition at line 2357 of file SemaTemplateDeduction.cpp.
References clang::TemplateArgumentList::asArray(), and DeduceTemplateArguments().
◆ DeduceTemplateArgumentsByTypeMatch()
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static |
Deduce the template arguments by comparing the parameter type and the argument type (C++ [temp.deduct.type]).
- Parameters
-
S the semantic analysis object within which we are deducing TemplateParams the template parameters that we are deducing ParamIn the parameter type ArgIn the argument type Info information about the template argument deduction itself Deduced the deduced template arguments TDF bitwise OR of the TemplateDeductionFlags bits that describe how template argument deduction is performed. PartialOrdering Whether we're performing template argument deduction in the context of partial ordering (C++0x [temp.deduct.partial]).
- Returns
- the result of template argument deduction so far. Note that a "success" result means that template argument deduction has not yet failed, but it may still fail, later, for other reasons.
Definition at line 1216 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, clang::sema::TemplateDeductionInfo::FirstArg, clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::Qualifiers::getCVRQualifiers(), clang::QualType::getCVRQualifiers(), clang::sema::TemplateDeductionInfo::getDeducedDepth(), clang::Qualifiers::getObjCLifetime(), clang::Type::getPointeeType(), clang::ReferenceType::getPointeeType(), clang::ASTContext::getQualifiedType(), clang::QualType::getQualifiers(), clang::ASTContext::getUnqualifiedArrayType(), clang::QualType::getUnqualifiedType(), clang::Qualifiers::hasNonTrivialObjCLifetime(), clang::ASTContext::hasSameUnqualifiedType(), isForwardingReference(), clang::Type::isFunctionType(), clang::Type::isLValueReferenceType(), clang::Type::isPlaceholderType(), clang::Qualifiers::isStrictSupersetOf(), clang::Qualifiers::OCL_ExplicitNone, clang::sema::TemplateDeductionInfo::SecondArg, clang::Qualifiers::setCVRQualifiers(), clang::TDF_ParamWithReferenceType, clang::TDF_TopLevelParameterTypeList, clang::Sema::TDK_NonDeducedMismatch, clang::Sema::TDK_Success, and clang::Qualifiers::withoutObjCLifetime().
Referenced by DeduceNonTypeTemplateArgument(), DeduceTemplateArguments(), DeduceTemplateArgumentsFromCallArgument(), isAtLeastAsSpecializedAs(), and ResolveOverloadForDeduction().
◆ DeduceTemplateArgumentsFromCallArgument()
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Perform template argument deduction per [temp.deduct.call] for a single parameter / argument pair.
Definition at line 3739 of file SemaTemplateDeduction.cpp.
References AdjustFunctionParmAndArgTypesForDeduction(), DeduceFromInitializerList(), DeduceTemplateArgumentsByTypeMatch(), clang::Expr::getType(), and clang::Sema::TDK_Success.
Referenced by AdjustFunctionParmAndArgTypesForDeduction(), DeduceFromInitializerList(), and clang::Sema::DeduceTemplateArguments().
◆ diagnoseAutoDeductionFailure()
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Attempt to produce an informative diagostic explaining why auto deduction failed.
- Returns
trueif diagnosed,falseif not.
Definition at line 4373 of file SemaTemplateDeduction.cpp.
References clang::Sema::Diag(), clang::sema::TemplateDeductionInfo::FirstArg, clang::sema::TemplateDeductionInfo::getLocation(), clang::sema::TemplateDeductionInfo::SecondArg, and clang::Sema::TDK_Inconsistent.
◆ FinishTemplateArgumentDeduction() [1/2]
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Complete template argument deduction for a partial specialization.
Definition at line 2716 of file SemaTemplateDeduction.cpp.
References getAsDeclContextOrEnclosing(), and clang::Sema::Unevaluated.
Referenced by clang::Sema::DeduceTemplateArguments(), and isAtLeastAsSpecializedAs().
◆ FinishTemplateArgumentDeduction() [2/2]
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Complete template argument deduction for a class or variable template, when partial ordering against a partial specialization.
Definition at line 2795 of file SemaTemplateDeduction.cpp.
References getAsDeclContextOrEnclosing(), and clang::Sema::Unevaluated.
◆ getAsDeclContextOrEnclosing()
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Definition at line 2694 of file SemaTemplateDeduction.cpp.
References clang::Decl::getDeclContext().
Referenced by FinishTemplateArgumentDeduction().
◆ getDeducedParameterFromExpr()
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If the given expression is of a form that permits the deduction of a non-type template parameter, return the declaration of that non-type template parameter.
Definition at line 174 of file SemaTemplateDeduction.cpp.
References clang::sema::TemplateDeductionInfo::getDeducedDepth().
Referenced by DeduceFromInitializerList(), and DeduceTemplateArguments().
◆ getExpandedPackSize()
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If Param is an expanded parameter pack, get the number of expansions.
Definition at line 644 of file SemaTemplateDeduction.cpp.
◆ getFirstInnerIndex()
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Get the index of the first template parameter that was originally from the innermost template-parameter-list.
This is 0 except when we concatenate the template parameter lists of a class template and a constructor template when forming an implicit deduction guide.
Definition at line 1169 of file SemaTemplateDeduction.cpp.
References clang::CXXDeductionGuideDecl::getDeducedTemplate(), clang::FunctionTemplateDecl::getTemplatedDecl(), clang::TemplateDecl::getTemplateParameters(), and clang::TemplateParameterList::size().
Referenced by clang::Sema::DeduceTemplateArguments().
◆ getPackIndexForParam()
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Find the pack index for a particular parameter index in an instantiation of a function template with specific arguments.
- Returns
- The pack index for whichever pack produced this parameter, or -1 if this was not produced by a parameter. Intended to be used as the ArgumentPackSubstitutionIndex for further substitutions.
Definition at line 3275 of file SemaTemplateDeduction.cpp.
References clang::Sema::getNumArgumentsInExpansion(), clang::FunctionTemplateDecl::getTemplatedDecl(), and clang::FunctionDecl::parameters().
◆ GetTypeOfFunction()
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Gets the type of a function for template-argument-deducton purposes when it's considered as part of an overload set.
Definition at line 3443 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, clang::Sema::DeduceReturnType(), clang::OverloadExpr::FindResult::Expression, clang::Expr::getExprLoc(), clang::Sema::getLangOpts(), clang::ASTContext::getMemberPointerType(), clang::ASTContext::getPointerType(), clang::FunctionDecl::getReturnType(), clang::ValueDecl::getType(), clang::ASTContext::getTypeDeclType(), clang::OverloadExpr::FindResult::HasFormOfMemberPointer, clang::OverloadExpr::FindResult::IsAddressOfOperand, and clang::Type::isUndeducedType().
Referenced by ResolveOverloadForDeduction().
◆ hasDeducibleTemplateParameters()
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Definition at line 5683 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, clang::TemplateParameterList::getDepth(), clang::TemplateDecl::getTemplateParameters(), clang::Type::isDependentType(), MarkUsedTemplateParameters(), and clang::TemplateParameterList::size().
Referenced by AdjustFunctionParmAndArgTypesForDeduction(), and clang::Sema::DeduceTemplateArguments().
◆ hasInconsistentOrSupersetQualifiersOf()
Determine whether the parameter has qualifiers that the argument lacks.
Put another way, determine whether there is no way to add a deduced set of qualifiers to the ParamType that would result in its qualifiers matching those of the ArgType.
Definition at line 1112 of file SemaTemplateDeduction.cpp.
References clang::Qualifiers::getAddressSpace(), clang::Qualifiers::getCVRQualifiers(), clang::Qualifiers::getObjCGCAttr(), clang::Qualifiers::getObjCLifetime(), clang::QualType::getQualifiers(), clang::Qualifiers::hasAddressSpace(), clang::Qualifiers::hasObjCGCAttr(), and clang::Qualifiers::hasObjCLifetime().
◆ hasPackExpansionBeforeEnd()
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Determine whether the given set of template arguments has a pack expansion that is not the last template argument.
Definition at line 2255 of file SemaTemplateDeduction.cpp.
References clang::TemplateArgument::Pack.
Referenced by DeduceTemplateArguments(), MarkUsedTemplateParameters(), and clang::Sema::MarkUsedTemplateParameters().
◆ hasSameExtendedValue()
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Compare two APSInts, extending and switching the sign as necessary to compare their values regardless of underlying type.
Definition at line 114 of file SemaTemplateDeduction.cpp.
References DeduceTemplateArguments().
Referenced by DeduceTemplateArguments().
◆ hasTemplateArgumentForDeduction()
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Determine whether there is a template argument to be used for deduction.
This routine "expands" argument packs in-place, overriding its input parameters so that Args[ArgIdx] will be the available template argument.
- Returns
- true if there is another template argument (which will be at
Args[ArgIdx]), false otherwise.
Definition at line 2238 of file SemaTemplateDeduction.cpp.
References clang::TemplateArgument::getKind(), clang::TemplateArgument::Pack, and clang::TemplateArgument::pack_elements().
Referenced by DeduceTemplateArguments().
◆ isAtLeastAsSpecializedAs() [1/2]
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Determine whether the function template FT1 is at least as specialized as FT2.
Definition at line 4692 of file SemaTemplateDeduction.cpp.
References AddImplicitObjectParameterType(), clang::Sema::Context, DeduceTemplateArguments(), DeduceTemplateArgumentsByTypeMatch(), clang::Type::getAs(), clang::TemplateParameterList::getDepth(), clang::FunctionType::getReturnType(), clang::FunctionTemplateDecl::getTemplatedDecl(), clang::TemplateDecl::getTemplateParameters(), clang::ValueDecl::getType(), clang::CXXMethodDecl::isStatic(), MarkUsedTemplateParameters(), clang::FunctionProtoType::param_type_begin(), clang::FunctionProtoType::param_type_end(), clang::TemplateParameterList::size(), clang::TDF_None, clang::TPOC_Call, clang::TPOC_Conversion, and clang::TPOC_Other.
Referenced by clang::Sema::getMoreSpecializedPartialSpecialization(), clang::Sema::getMoreSpecializedTemplate(), and clang::Sema::isMoreSpecializedThanPrimary().
◆ isAtLeastAsSpecializedAs() [2/2]
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Determine whether one partial specialization, P1, is at least as specialized than another, P2.
- Template Parameters
-
TemplateLikeDecl The kind of P2, which must be a TemplateDecl or {Class,Var}TemplatePartialSpecializationDecl.
- Parameters
-
T1 The injected-class-name of P1 (faked for a variable template). T2 The injected-class-name of P2 (faked for a variable template).
Definition at line 5028 of file SemaTemplateDeduction.cpp.
References DeduceTemplateArgumentsByTypeMatch(), FinishTemplateArgumentDeduction(), clang::TemplateArgumentList::OnStack, and clang::TDF_None.
◆ isForwardingReference()
Determine whether a type denotes a forwarding reference.
Definition at line 1177 of file SemaTemplateDeduction.cpp.
References clang::Type::getAs(), and clang::TemplateTypeParmType::getIndex().
Referenced by AdjustFunctionParmAndArgTypesForDeduction(), and DeduceTemplateArgumentsByTypeMatch().
◆ IsPossiblyOpaquelyQualifiedType()
Determines whether the given type is an opaque type that might be more qualified when instantiated.
Definition at line 610 of file SemaTemplateDeduction.cpp.
References clang::Type::getTypeClass().
◆ isSameDeclaration()
Determine whether two declaration pointers refer to the same declaration.
Definition at line 199 of file SemaTemplateDeduction.cpp.
References clang::Decl::getCanonicalDecl().
Referenced by DeduceTemplateArguments().
◆ isSameTemplate()
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Determine if the two templates are equivalent.
Definition at line 4910 of file SemaTemplateDeduction.cpp.
References clang::Decl::getCanonicalDecl().
Referenced by clang::Sema::getMostSpecialized().
◆ isSameTemplateArg()
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Determine whether two template arguments are the same.
Definition at line 2369 of file SemaTemplateDeduction.cpp.
◆ isSimpleTemplateIdType()
Determine whether the given type T is a simple-template-id type.
Definition at line 2920 of file SemaTemplateDeduction.cpp.
References clang::Type::getAs().
Referenced by AdjustFunctionParmAndArgTypesForDeduction().
◆ isVariadicFunctionTemplate()
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Determine whether this a function template whose parameter-type-list ends with a function parameter pack.
Definition at line 4843 of file SemaTemplateDeduction.cpp.
References clang::FunctionDecl::getNumParams(), clang::FunctionDecl::getParamDecl(), clang::FunctionTemplateDecl::getTemplatedDecl(), clang::VarDecl::isParameterPack(), and clang::Last.
Referenced by clang::Sema::getMoreSpecializedTemplate().
◆ makeTemplateParameter()
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Helper function to build a TemplateParameter when we don't know its type statically.
Definition at line 634 of file SemaTemplateDeduction.cpp.
◆ MarkUsedTemplateParameters() [1/5]
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Mark the template parameters that are used by this template argument.
Definition at line 5601 of file SemaTemplateDeduction.cpp.
References clang::TemplateArgument::Declaration, Depth, clang::TemplateArgument::Expression, clang::TemplateArgument::getAsExpr(), clang::TemplateArgument::getAsTemplateOrTemplatePattern(), clang::TemplateArgument::getAsType(), clang::TemplateArgument::getKind(), clang::TemplateArgument::getNullPtrType(), clang::TemplateArgument::Integral, clang::TemplateArgument::Null, clang::TemplateArgument::NullPtr, P, clang::TemplateArgument::Pack, clang::TemplateArgument::pack_elements(), clang::TemplateArgument::Template, clang::TemplateArgument::TemplateExpansion, clang::TemplateArgument::Type, and Used.
Referenced by hasDeducibleTemplateParameters(), isAtLeastAsSpecializedAs(), clang::Sema::MarkDeducedTemplateParameters(), MarkUsedTemplateParameters(), and clang::Sema::MarkUsedTemplateParameters().
◆ MarkUsedTemplateParameters() [2/5]
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Mark the template parameters that are used by the given type.
Definition at line 5325 of file SemaTemplateDeduction.cpp.
References clang::Auto, Depth, clang::DependentAddressSpaceType::getAddrSpaceExpr(), clang::TemplateSpecializationType::getArg(), clang::DependentTemplateSpecializationType::getArg(), clang::SubstTemplateTypeParmPackType::getArgumentPack(), clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::MemberPointerType::getClass(), clang::TemplateTypeParmType::getDepth(), clang::DependentSizedExtVectorType::getElementType(), clang::TemplateTypeParmType::getIndex(), clang::FunctionProtoType::getNoexceptExpr(), clang::TemplateSpecializationType::getNumArgs(), clang::DependentTemplateSpecializationType::getNumArgs(), clang::FunctionProtoType::getNumParams(), clang::FunctionProtoType::getParamType(), clang::MemberPointerType::getPointeeType(), clang::DependentAddressSpaceType::getPointeeType(), clang::DependentTemplateSpecializationType::getQualifier(), clang::SubstTemplateTypeParmPackType::getReplacedParameter(), clang::FunctionType::getReturnType(), clang::DependentSizedExtVectorType::getSizeExpr(), clang::TemplateSpecializationType::getTemplateName(), clang::Type::getTypeClass(), clang::QualType::getTypePtr(), getUnderlyingType(), hasPackExpansionBeforeEnd(), clang::Type::isDependentType(), clang::QualType::isNull(), MarkUsedTemplateParameters(), clang::TemplateSpecializationType::template_arguments(), and Used.
◆ MarkUsedTemplateParameters() [3/5]
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Mark the template parameters that are used by the given expression.
Definition at line 5237 of file SemaTemplateDeduction.cpp.
References Depth, clang::DeclRefExpr::getDecl(), clang::TemplateParmPosition::getDepth(), clang::TemplateParmPosition::getIndex(), clang::ASTContext::getLangOpts(), clang::ValueDecl::getType(), MarkUsedTemplateParameters(), and Used.
◆ MarkUsedTemplateParameters() [4/5]
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Mark the template parameters that are used by the given nested name specifier.
Definition at line 5283 of file SemaTemplateDeduction.cpp.
References Depth, clang::NestedNameSpecifier::getAsType(), clang::NestedNameSpecifier::getPrefix(), MarkUsedTemplateParameters(), and Used.
◆ MarkUsedTemplateParameters() [5/5]
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Mark the template parameters that are used by the given template name.
Definition at line 5300 of file SemaTemplateDeduction.cpp.
◆ ResolveOverloadForDeduction()
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Apply the deduction rules for overload sets.
- Returns
- the null type if this argument should be treated as an undeduced context
Definition at line 3470 of file SemaTemplateDeduction.cpp.
References clang::Sema::Context, clang::OverloadExpr::copyTemplateArgumentsInto(), clang::OverloadExpr::decls_begin(), clang::OverloadExpr::decls_end(), clang::Sema::DeduceTemplateArguments(), DeduceTemplateArgumentsByTypeMatch(), clang::OverloadExpr::FindResult::Expression, clang::OverloadExpr::find(), clang::OverloadExpr::getNameLoc(), clang::ASTContext::getPointerType(), GetTypeOfFunction(), clang::NamedDecl::getUnderlyingDecl(), clang::OverloadExpr::hasExplicitTemplateArgs(), clang::OverloadExpr::FindResult::IsAddressOfOperand, clang::Type::isFunctionPointerType(), clang::Type::isFunctionType(), clang::Type::isMemberFunctionPointerType(), clang::QualType::isNull(), clang::Type::isPointerType(), clang::Sema::resolveAddressOfOnlyViableOverloadCandidate(), clang::Sema::ResolveSingleFunctionTemplateSpecialization(), clang::TemplateParameterList::size(), clang::TDF_IgnoreQualifiers, and clang::TDF_ParamWithReferenceType.
Referenced by AdjustFunctionParmAndArgTypesForDeduction().
