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clang/lib/AST/TypePrinter.cpp

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//===- TypePrinter.cpp - Pretty-Print Clang Types -------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This contains code to print types from Clang's type system.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/PrettyPrinter.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/TemplateBase.h"
#include "clang/AST/TemplateName.h"
#include "clang/AST/Type.h"
#include "clang/Basic/AddressSpaces.h"
#include "clang/Basic/ExceptionSpecificationType.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <string>
using namespace clang;
namespace {
/// RAII object that enables printing of the ARC __strong lifetime
/// qualifier.
class IncludeStrongLifetimeRAII {
PrintingPolicy &Policy;
bool Old;
public:
explicit IncludeStrongLifetimeRAII(PrintingPolicy &Policy)
: Policy(Policy), Old(Policy.SuppressStrongLifetime) {
if (!Policy.SuppressLifetimeQualifiers)
Policy.SuppressStrongLifetime = false;
}
~IncludeStrongLifetimeRAII() {
Policy.SuppressStrongLifetime = Old;
}
};
class ParamPolicyRAII {
PrintingPolicy &Policy;
bool Old;
public:
explicit ParamPolicyRAII(PrintingPolicy &Policy)
: Policy(Policy), Old(Policy.SuppressSpecifiers) {
Policy.SuppressSpecifiers = false;
}
~ParamPolicyRAII() {
Policy.SuppressSpecifiers = Old;
}
};
class ElaboratedTypePolicyRAII {
PrintingPolicy &Policy;
bool SuppressTagKeyword;
bool SuppressScope;
public:
explicit ElaboratedTypePolicyRAII(PrintingPolicy &Policy) : Policy(Policy) {
SuppressTagKeyword = Policy.SuppressTagKeyword;
SuppressScope = Policy.SuppressScope;
Policy.SuppressTagKeyword = true;
Policy.SuppressScope = true;
}
~ElaboratedTypePolicyRAII() {
Policy.SuppressTagKeyword = SuppressTagKeyword;
Policy.SuppressScope = SuppressScope;
}
};
class TypePrinter {
PrintingPolicy Policy;
unsigned Indentation;
bool HasEmptyPlaceHolder = false;
bool InsideCCAttribute = false;
public:
explicit TypePrinter(const PrintingPolicy &Policy, unsigned Indentation = 0)
: Policy(Policy), Indentation(Indentation) {}
void print(const Type *ty, Qualifiers qs, raw_ostream &OS,
StringRef PlaceHolder);
void print(QualType T, raw_ostream &OS, StringRef PlaceHolder);
static bool canPrefixQualifiers(const Type *T, bool &NeedARCStrongQualifier);
void spaceBeforePlaceHolder(raw_ostream &OS);
void printTypeSpec(NamedDecl *D, raw_ostream &OS);
void printBefore(const Type *ty, Qualifiers qs, raw_ostream &OS);
void printBefore(QualType T, raw_ostream &OS);
void printAfter(const Type *ty, Qualifiers qs, raw_ostream &OS);
void printAfter(QualType T, raw_ostream &OS);
void AppendScope(DeclContext *DC, raw_ostream &OS);
void printTag(TagDecl *T, raw_ostream &OS);
void printFunctionAfter(const FunctionType::ExtInfo &Info, raw_ostream &OS);
#define ABSTRACT_TYPE(CLASS, PARENT)
#define TYPE(CLASS, PARENT) \
void print##CLASS##Before(const CLASS##Type *T, raw_ostream &OS); \
void print##CLASS##After(const CLASS##Type *T, raw_ostream &OS);
#include "clang/AST/TypeNodes.def"
};
} // namespace
static void AppendTypeQualList(raw_ostream &OS, unsigned TypeQuals,
bool HasRestrictKeyword) {
bool appendSpace = false;
if (TypeQuals & Qualifiers::Const) {
OS << "const";
appendSpace = true;
}
if (TypeQuals & Qualifiers::Volatile) {
if (appendSpace) OS << ' ';
OS << "volatile";
appendSpace = true;
}
if (TypeQuals & Qualifiers::Restrict) {
if (appendSpace) OS << ' ';
if (HasRestrictKeyword) {
OS << "restrict";
} else {
OS << "__restrict";
}
}
}
void TypePrinter::spaceBeforePlaceHolder(raw_ostream &OS) {
if (!HasEmptyPlaceHolder)
OS << ' ';
}
void TypePrinter::print(QualType t, raw_ostream &OS, StringRef PlaceHolder) {
SplitQualType split = t.split();
print(split.Ty, split.Quals, OS, PlaceHolder);
}
void TypePrinter::print(const Type *T, Qualifiers Quals, raw_ostream &OS,
StringRef PlaceHolder) {
if (!T) {
OS << "NULL TYPE";
return;
}
SaveAndRestore<bool> PHVal(HasEmptyPlaceHolder, PlaceHolder.empty());
printBefore(T, Quals, OS);
OS << PlaceHolder;
printAfter(T, Quals, OS);
}
bool TypePrinter::canPrefixQualifiers(const Type *T,
bool &NeedARCStrongQualifier) {
// CanPrefixQualifiers - We prefer to print type qualifiers before the type,
// so that we get "const int" instead of "int const", but we can't do this if
// the type is complex. For example if the type is "int*", we *must* print
// "int * const", printing "const int *" is different. Only do this when the
// type expands to a simple string.
bool CanPrefixQualifiers = false;
NeedARCStrongQualifier = false;
Type::TypeClass TC = T->getTypeClass();
if (const auto *AT = dyn_cast<AutoType>(T))
TC = AT->desugar()->getTypeClass();
if (const auto *Subst = dyn_cast<SubstTemplateTypeParmType>(T))
TC = Subst->getReplacementType()->getTypeClass();
switch (TC) {
case Type::Auto:
case Type::Builtin:
case Type::Complex:
case Type::UnresolvedUsing:
case Type::Typedef:
case Type::TypeOfExpr:
case Type::TypeOf:
case Type::Decltype:
case Type::UnaryTransform:
case Type::Record:
case Type::Enum:
case Type::Elaborated:
case Type::TemplateTypeParm:
case Type::SubstTemplateTypeParmPack:
case Type::DeducedTemplateSpecialization:
case Type::TemplateSpecialization:
case Type::InjectedClassName:
case Type::DependentName:
case Type::DependentTemplateSpecialization:
case Type::ObjCObject:
case Type::ObjCTypeParam:
case Type::ObjCInterface:
case Type::Atomic:
case Type::Pipe:
CanPrefixQualifiers = true;
break;
case Type::ObjCObjectPointer:
CanPrefixQualifiers = T->isObjCIdType() || T->isObjCClassType() ||
T->isObjCQualifiedIdType() || T->isObjCQualifiedClassType();
break;
case Type::ConstantArray:
case Type::IncompleteArray:
case Type::VariableArray:
case Type::DependentSizedArray:
NeedARCStrongQualifier = true;
LLVM_FALLTHROUGH;
case Type::Adjusted:
case Type::Decayed:
case Type::Pointer:
case Type::BlockPointer:
case Type::LValueReference:
case Type::RValueReference:
case Type::MemberPointer:
case Type::DependentAddressSpace:
case Type::DependentVector:
case Type::DependentSizedExtVector:
case Type::Vector:
case Type::ExtVector:
case Type::FunctionProto:
case Type::FunctionNoProto:
case Type::Paren:
case Type::Attributed:
case Type::PackExpansion:
case Type::SubstTemplateTypeParm:
CanPrefixQualifiers = false;
break;
}
return CanPrefixQualifiers;
}
void TypePrinter::printBefore(QualType T, raw_ostream &OS) {
SplitQualType Split = T.split();
// If we have cv1 T, where T is substituted for cv2 U, only print cv1 - cv2
// at this level.
Qualifiers Quals = Split.Quals;
if (const auto *Subst = dyn_cast<SubstTemplateTypeParmType>(Split.Ty))
Quals -= QualType(Subst, 0).getQualifiers();
printBefore(Split.Ty, Quals, OS);
}
/// Prints the part of the type string before an identifier, e.g. for
/// "int foo[10]" it prints "int ".
void TypePrinter::printBefore(const Type *T,Qualifiers Quals, raw_ostream &OS) {
if (Policy.SuppressSpecifiers && T->isSpecifierType())
return;
SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder);
// Print qualifiers as appropriate.
bool CanPrefixQualifiers = false;
bool NeedARCStrongQualifier = false;
CanPrefixQualifiers = canPrefixQualifiers(T, NeedARCStrongQualifier);
if (CanPrefixQualifiers && !Quals.empty()) {
if (NeedARCStrongQualifier) {
IncludeStrongLifetimeRAII Strong(Policy);
Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/true);
} else {
Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/true);
}
}
bool hasAfterQuals = false;
if (!CanPrefixQualifiers && !Quals.empty()) {
hasAfterQuals = !Quals.isEmptyWhenPrinted(Policy);
if (hasAfterQuals)
HasEmptyPlaceHolder = false;
}
switch (T->getTypeClass()) {
#define ABSTRACT_TYPE(CLASS, PARENT)
#define TYPE(CLASS, PARENT) case Type::CLASS: \
print##CLASS##Before(cast<CLASS##Type>(T), OS); \
break;
#include "clang/AST/TypeNodes.def"
}
if (hasAfterQuals) {
if (NeedARCStrongQualifier) {
IncludeStrongLifetimeRAII Strong(Policy);
Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/!PrevPHIsEmpty.get());
} else {
Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/!PrevPHIsEmpty.get());
}
}
}
void TypePrinter::printAfter(QualType t, raw_ostream &OS) {
SplitQualType split = t.split();
printAfter(split.Ty, split.Quals, OS);
}
/// Prints the part of the type string after an identifier, e.g. for
/// "int foo[10]" it prints "[10]".
void TypePrinter::printAfter(const Type *T, Qualifiers Quals, raw_ostream &OS) {
switch (T->getTypeClass()) {
#define ABSTRACT_TYPE(CLASS, PARENT)
#define TYPE(CLASS, PARENT) case Type::CLASS: \
print##CLASS##After(cast<CLASS##Type>(T), OS); \
break;
#include "clang/AST/TypeNodes.def"
}
}
void TypePrinter::printBuiltinBefore(const BuiltinType *T, raw_ostream &OS) {
OS << T->getName(Policy);
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printBuiltinAfter(const BuiltinType *T, raw_ostream &OS) {}
void TypePrinter::printComplexBefore(const ComplexType *T, raw_ostream &OS) {
OS << "_Complex ";
printBefore(T->getElementType(), OS);
}
void TypePrinter::printComplexAfter(const ComplexType *T, raw_ostream &OS) {
printAfter(T->getElementType(), OS);
}
void TypePrinter::printPointerBefore(const PointerType *T, raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getPointeeType(), OS);
// Handle things like 'int (*A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(T->getPointeeType()))
OS << '(';
OS << '*';
}
void TypePrinter::printPointerAfter(const PointerType *T, raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
// Handle things like 'int (*A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(T->getPointeeType()))
OS << ')';
printAfter(T->getPointeeType(), OS);
}
void TypePrinter::printBlockPointerBefore(const BlockPointerType *T,
raw_ostream &OS) {
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getPointeeType(), OS);
OS << '^';
}
void TypePrinter::printBlockPointerAfter(const BlockPointerType *T,
raw_ostream &OS) {
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printAfter(T->getPointeeType(), OS);
}
// When printing a reference, the referenced type might also be a reference.
// If so, we want to skip that before printing the inner type.
static QualType skipTopLevelReferences(QualType T) {
if (auto *Ref = T->getAs<ReferenceType>())
return skipTopLevelReferences(Ref->getPointeeTypeAsWritten());
return T;
}
void TypePrinter::printLValueReferenceBefore(const LValueReferenceType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
QualType Inner = skipTopLevelReferences(T->getPointeeTypeAsWritten());
printBefore(Inner, OS);
// Handle things like 'int (&A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(Inner))
OS << '(';
OS << '&';
}
void TypePrinter::printLValueReferenceAfter(const LValueReferenceType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
QualType Inner = skipTopLevelReferences(T->getPointeeTypeAsWritten());
// Handle things like 'int (&A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(Inner))
OS << ')';
printAfter(Inner, OS);
}
void TypePrinter::printRValueReferenceBefore(const RValueReferenceType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
QualType Inner = skipTopLevelReferences(T->getPointeeTypeAsWritten());
printBefore(Inner, OS);
// Handle things like 'int (&&A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(Inner))
OS << '(';
OS << "&&";
}
void TypePrinter::printRValueReferenceAfter(const RValueReferenceType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
QualType Inner = skipTopLevelReferences(T->getPointeeTypeAsWritten());
// Handle things like 'int (&&A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(Inner))
OS << ')';
printAfter(Inner, OS);
}
void TypePrinter::printMemberPointerBefore(const MemberPointerType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getPointeeType(), OS);
// Handle things like 'int (Cls::*A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(T->getPointeeType()))
OS << '(';
PrintingPolicy InnerPolicy(Policy);
InnerPolicy.IncludeTagDefinition = false;
TypePrinter(InnerPolicy).print(QualType(T->getClass(), 0), OS, StringRef());
OS << "::*";
}
void TypePrinter::printMemberPointerAfter(const MemberPointerType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
// Handle things like 'int (Cls::*A)[4];' correctly.
// FIXME: this should include vectors, but vectors use attributes I guess.
if (isa<ArrayType>(T->getPointeeType()))
OS << ')';
printAfter(T->getPointeeType(), OS);
}
void TypePrinter::printConstantArrayBefore(const ConstantArrayType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getElementType(), OS);
}
void TypePrinter::printConstantArrayAfter(const ConstantArrayType *T,
raw_ostream &OS) {
OS << '[';
if (T->getIndexTypeQualifiers().hasQualifiers()) {
AppendTypeQualList(OS, T->getIndexTypeCVRQualifiers(),
Policy.Restrict);
OS << ' ';
}
if (T->getSizeModifier() == ArrayType::Static)
OS << "static ";
OS << T->getSize().getZExtValue() << ']';
printAfter(T->getElementType(), OS);
}
void TypePrinter::printIncompleteArrayBefore(const IncompleteArrayType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getElementType(), OS);
}
void TypePrinter::printIncompleteArrayAfter(const IncompleteArrayType *T,
raw_ostream &OS) {
OS << "[]";
printAfter(T->getElementType(), OS);
}
void TypePrinter::printVariableArrayBefore(const VariableArrayType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getElementType(), OS);
}
void TypePrinter::printVariableArrayAfter(const VariableArrayType *T,
raw_ostream &OS) {
OS << '[';
if (T->getIndexTypeQualifiers().hasQualifiers()) {
AppendTypeQualList(OS, T->getIndexTypeCVRQualifiers(), Policy.Restrict);
OS << ' ';
}
if (T->getSizeModifier() == VariableArrayType::Static)
OS << "static ";
else if (T->getSizeModifier() == VariableArrayType::Star)
OS << '*';
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << ']';
printAfter(T->getElementType(), OS);
}
void TypePrinter::printAdjustedBefore(const AdjustedType *T, raw_ostream &OS) {
// Print the adjusted representation, otherwise the adjustment will be
// invisible.
printBefore(T->getAdjustedType(), OS);
}
void TypePrinter::printAdjustedAfter(const AdjustedType *T, raw_ostream &OS) {
printAfter(T->getAdjustedType(), OS);
}
void TypePrinter::printDecayedBefore(const DecayedType *T, raw_ostream &OS) {
// Print as though it's a pointer.
printAdjustedBefore(T, OS);
}
void TypePrinter::printDecayedAfter(const DecayedType *T, raw_ostream &OS) {
printAdjustedAfter(T, OS);
}
void TypePrinter::printDependentSizedArrayBefore(
const DependentSizedArrayType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
printBefore(T->getElementType(), OS);
}
void TypePrinter::printDependentSizedArrayAfter(
const DependentSizedArrayType *T,
raw_ostream &OS) {
OS << '[';
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << ']';
printAfter(T->getElementType(), OS);
}
void TypePrinter::printDependentAddressSpaceBefore(
const DependentAddressSpaceType *T, raw_ostream &OS) {
printBefore(T->getPointeeType(), OS);
}
void TypePrinter::printDependentAddressSpaceAfter(
const DependentAddressSpaceType *T, raw_ostream &OS) {
OS << " __attribute__((address_space(";
if (T->getAddrSpaceExpr())
T->getAddrSpaceExpr()->printPretty(OS, nullptr, Policy);
OS << ")))";
printAfter(T->getPointeeType(), OS);
}
void TypePrinter::printDependentSizedExtVectorBefore(
const DependentSizedExtVectorType *T,
raw_ostream &OS) {
printBefore(T->getElementType(), OS);
}
void TypePrinter::printDependentSizedExtVectorAfter(
const DependentSizedExtVectorType *T,
raw_ostream &OS) {
OS << " __attribute__((ext_vector_type(";
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << ")))";
printAfter(T->getElementType(), OS);
}
void TypePrinter::printVectorBefore(const VectorType *T, raw_ostream &OS) {
switch (T->getVectorKind()) {
case VectorType::AltiVecPixel:
OS << "__vector __pixel ";
break;
case VectorType::AltiVecBool:
OS << "__vector __bool ";
printBefore(T->getElementType(), OS);
break;
case VectorType::AltiVecVector:
OS << "__vector ";
printBefore(T->getElementType(), OS);
break;
case VectorType::NeonVector:
OS << "__attribute__((neon_vector_type("
<< T->getNumElements() << "))) ";
printBefore(T->getElementType(), OS);
break;
case VectorType::NeonPolyVector:
OS << "__attribute__((neon_polyvector_type(" <<
T->getNumElements() << "))) ";
printBefore(T->getElementType(), OS);
break;
case VectorType::GenericVector: {
// FIXME: We prefer to print the size directly here, but have no way
// to get the size of the type.
OS << "__attribute__((__vector_size__("
<< T->getNumElements()
<< " * sizeof(";
print(T->getElementType(), OS, StringRef());
OS << ")))) ";
printBefore(T->getElementType(), OS);
break;
}
}
}
void TypePrinter::printVectorAfter(const VectorType *T, raw_ostream &OS) {
printAfter(T->getElementType(), OS);
}
void TypePrinter::printDependentVectorBefore(
const DependentVectorType *T, raw_ostream &OS) {
switch (T->getVectorKind()) {
case VectorType::AltiVecPixel:
OS << "__vector __pixel ";
break;
case VectorType::AltiVecBool:
OS << "__vector __bool ";
printBefore(T->getElementType(), OS);
break;
case VectorType::AltiVecVector:
OS << "__vector ";
printBefore(T->getElementType(), OS);
break;
case VectorType::NeonVector:
OS << "__attribute__((neon_vector_type(";
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << "))) ";
printBefore(T->getElementType(), OS);
break;
case VectorType::NeonPolyVector:
OS << "__attribute__((neon_polyvector_type(";
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << "))) ";
printBefore(T->getElementType(), OS);
break;
case VectorType::GenericVector: {
// FIXME: We prefer to print the size directly here, but have no way
// to get the size of the type.
OS << "__attribute__((__vector_size__(";
if (T->getSizeExpr())
T->getSizeExpr()->printPretty(OS, nullptr, Policy);
OS << " * sizeof(";
print(T->getElementType(), OS, StringRef());
OS << ")))) ";
printBefore(T->getElementType(), OS);
break;
}
}
}
void TypePrinter::printDependentVectorAfter(
const DependentVectorType *T, raw_ostream &OS) {
printAfter(T->getElementType(), OS);
}
void TypePrinter::printExtVectorBefore(const ExtVectorType *T,
raw_ostream &OS) {
printBefore(T->getElementType(), OS);
}
void TypePrinter::printExtVectorAfter(const ExtVectorType *T, raw_ostream &OS) {
printAfter(T->getElementType(), OS);
OS << " __attribute__((ext_vector_type(";
OS << T->getNumElements();
OS << ")))";
}
void
FunctionProtoType::printExceptionSpecification(raw_ostream &OS,
const PrintingPolicy &Policy)
const {
if (hasDynamicExceptionSpec()) {
OS << " throw(";
if (getExceptionSpecType() == EST_MSAny)
OS << "...";
else
for (unsigned I = 0, N = getNumExceptions(); I != N; ++I) {
if (I)
OS << ", ";
OS << getExceptionType(I).stream(Policy);
}
OS << ')';
} else if (isNoexceptExceptionSpec(getExceptionSpecType())) {
OS << " noexcept";
// FIXME:Is it useful to print out the expression for a non-dependent
// noexcept specification?
if (isComputedNoexcept(getExceptionSpecType())) {
OS << '(';
if (getNoexceptExpr())
getNoexceptExpr()->printPretty(OS, nullptr, Policy);
OS << ')';
}
}
}
void TypePrinter::printFunctionProtoBefore(const FunctionProtoType *T,
raw_ostream &OS) {
if (T->hasTrailingReturn()) {
OS << "auto ";
if (!HasEmptyPlaceHolder)
OS << '(';
} else {
// If needed for precedence reasons, wrap the inner part in grouping parens.
SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder, false);
printBefore(T->getReturnType(), OS);
if (!PrevPHIsEmpty.get())
OS << '(';
}
}
StringRef clang::getParameterABISpelling(ParameterABI ABI) {
switch (ABI) {
case ParameterABI::Ordinary:
llvm_unreachable("asking for spelling of ordinary parameter ABI");
case ParameterABI::SwiftContext:
return "swift_context";
case ParameterABI::SwiftErrorResult:
return "swift_error_result";
case ParameterABI::SwiftIndirectResult:
return "swift_indirect_result";
}
llvm_unreachable("bad parameter ABI kind");
}
void TypePrinter::printFunctionProtoAfter(const FunctionProtoType *T,
raw_ostream &OS) {
// If needed for precedence reasons, wrap the inner part in grouping parens.
if (!HasEmptyPlaceHolder)
OS << ')';
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
OS << '(';
{
ParamPolicyRAII ParamPolicy(Policy);
for (unsigned i = 0, e = T->getNumParams(); i != e; ++i) {
if (i) OS << ", ";
auto EPI = T->getExtParameterInfo(i);
if (EPI.isConsumed()) OS << "__attribute__((ns_consumed)) ";
if (EPI.isNoEscape())
OS << "__attribute__((noescape)) ";
auto ABI = EPI.getABI();
if (ABI != ParameterABI::Ordinary)
OS << "__attribute__((" << getParameterABISpelling(ABI) << ")) ";
print(T->getParamType(i), OS, StringRef());
}
}
if (T->isVariadic()) {
if (T->getNumParams())
OS << ", ";
OS << "...";
} else if (T->getNumParams() == 0 && Policy.UseVoidForZeroParams) {
// Do not emit int() if we have a proto, emit 'int(void)'.
OS << "void";
}
OS << ')';
FunctionType::ExtInfo Info = T->getExtInfo();
printFunctionAfter(Info, OS);
if (unsigned quals = T->getTypeQuals()) {
OS << ' ';
AppendTypeQualList(OS, quals, Policy.Restrict);
}
switch (T->getRefQualifier()) {
case RQ_None:
break;
case RQ_LValue:
OS << " &";
break;
case RQ_RValue:
OS << " &&";
break;
}
T->printExceptionSpecification(OS, Policy);
if (T->hasTrailingReturn()) {
OS << " -> ";
print(T->getReturnType(), OS, StringRef());
} else
printAfter(T->getReturnType(), OS);
}
void TypePrinter::printFunctionAfter(const FunctionType::ExtInfo &Info,
raw_ostream &OS) {
if (!InsideCCAttribute) {
switch (Info.getCC()) {
case CC_C:
// The C calling convention is the default on the vast majority of platforms
// we support. If the user wrote it explicitly, it will usually be printed
// while traversing the AttributedType. If the type has been desugared, let
// the canonical spelling be the implicit calling convention.
// FIXME: It would be better to be explicit in certain contexts, such as a
// cdecl function typedef used to declare a member function with the
// Microsoft C++ ABI.
break;
case CC_X86StdCall:
OS << " __attribute__((stdcall))";
break;
case CC_X86FastCall:
OS << " __attribute__((fastcall))";
break;
case CC_X86ThisCall:
OS << " __attribute__((thiscall))";
break;
case CC_X86VectorCall:
OS << " __attribute__((vectorcall))";
break;
case CC_X86Pascal:
OS << " __attribute__((pascal))";
break;
case CC_AAPCS:
OS << " __attribute__((pcs(\"aapcs\")))";
break;
case CC_AAPCS_VFP:
OS << " __attribute__((pcs(\"aapcs-vfp\")))";
break;
case CC_IntelOclBicc:
OS << " __attribute__((intel_ocl_bicc))";
break;
case CC_Win64:
OS << " __attribute__((ms_abi))";
break;
case CC_X86_64SysV:
OS << " __attribute__((sysv_abi))";
break;
case CC_X86RegCall:
OS << " __attribute__((regcall))";
break;
case CC_SpirFunction:
case CC_OpenCLKernel:
// Do nothing. These CCs are not available as attributes.
break;
case CC_Swift:
OS << " __attribute__((swiftcall))";
break;
case CC_PreserveMost:
OS << " __attribute__((preserve_most))";
break;
case CC_PreserveAll:
OS << " __attribute__((preserve_all))";
break;
}
}
if (Info.getNoReturn())
OS << " __attribute__((noreturn))";
if (Info.getProducesResult())
OS << " __attribute__((ns_returns_retained))";
if (Info.getRegParm())
OS << " __attribute__((regparm ("
<< Info.getRegParm() << ")))";
if (Info.getNoCallerSavedRegs())
OS << " __attribute__((no_caller_saved_registers))";
if (Info.getNoCfCheck())
OS << " __attribute__((nocf_check))";
}
void TypePrinter::printFunctionNoProtoBefore(const FunctionNoProtoType *T,
raw_ostream &OS) {
// If needed for precedence reasons, wrap the inner part in grouping parens.
SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder, false);
printBefore(T->getReturnType(), OS);
if (!PrevPHIsEmpty.get())
OS << '(';
}
void TypePrinter::printFunctionNoProtoAfter(const FunctionNoProtoType *T,
raw_ostream &OS) {
// If needed for precedence reasons, wrap the inner part in grouping parens.
if (!HasEmptyPlaceHolder)
OS << ')';
SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
OS << "()";
printFunctionAfter(T->getExtInfo(), OS);
printAfter(T->getReturnType(), OS);
}
void TypePrinter::printTypeSpec(NamedDecl *D, raw_ostream &OS) {
// Compute the full nested-name-specifier for this type.
// In C, this will always be empty except when the type
// being printed is anonymous within other Record.
if (!Policy.SuppressScope)
AppendScope(D->getDeclContext(), OS);
IdentifierInfo *II = D->getIdentifier();
OS << II->getName();
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printUnresolvedUsingBefore(const UnresolvedUsingType *T,
raw_ostream &OS) {
printTypeSpec(T->getDecl(), OS);
}
void TypePrinter::printUnresolvedUsingAfter(const UnresolvedUsingType *T,
raw_ostream &OS) {}
void TypePrinter::printTypedefBefore(const TypedefType *T, raw_ostream &OS) {
printTypeSpec(T->getDecl(), OS);
}
void TypePrinter::printTypedefAfter(const TypedefType *T, raw_ostream &OS) {}
void TypePrinter::printTypeOfExprBefore(const TypeOfExprType *T,
raw_ostream &OS) {
OS << "typeof ";
if (T->getUnderlyingExpr())
T->getUnderlyingExpr()->printPretty(OS, nullptr, Policy);
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printTypeOfExprAfter(const TypeOfExprType *T,
raw_ostream &OS) {}
void TypePrinter::printTypeOfBefore(const TypeOfType *T, raw_ostream &OS) {
OS << "typeof(";
print(T->getUnderlyingType(), OS, StringRef());
OS << ')';
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printTypeOfAfter(const TypeOfType *T, raw_ostream &OS) {}
void TypePrinter::printDecltypeBefore(const DecltypeType *T, raw_ostream &OS) {
OS << "decltype(";
if (T->getUnderlyingExpr())
T->getUnderlyingExpr()->printPretty(OS, nullptr, Policy);
OS << ')';
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printDecltypeAfter(const DecltypeType *T, raw_ostream &OS) {}
void TypePrinter::printUnaryTransformBefore(const UnaryTransformType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
switch (T->getUTTKind()) {
case UnaryTransformType::EnumUnderlyingType:
OS << "__underlying_type(";
print(T->getBaseType(), OS, StringRef());
OS << ')';
spaceBeforePlaceHolder(OS);
return;
}
printBefore(T->getBaseType(), OS);
}
void TypePrinter::printUnaryTransformAfter(const UnaryTransformType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
switch (T->getUTTKind()) {
case UnaryTransformType::EnumUnderlyingType:
return;
}
printAfter(T->getBaseType(), OS);
}
void TypePrinter::printAutoBefore(const AutoType *T, raw_ostream &OS) {
// If the type has been deduced, do not print 'auto'.
if (!T->getDeducedType().isNull()) {
printBefore(T->getDeducedType(), OS);
} else {
switch (T->getKeyword()) {
case AutoTypeKeyword::Auto: OS << "auto"; break;
case AutoTypeKeyword::DecltypeAuto: OS << "decltype(auto)"; break;
case AutoTypeKeyword::GNUAutoType: OS << "__auto_type"; break;
}
spaceBeforePlaceHolder(OS);
}
}
void TypePrinter::printAutoAfter(const AutoType *T, raw_ostream &OS) {
// If the type has been deduced, do not print 'auto'.
if (!T->getDeducedType().isNull())
printAfter(T->getDeducedType(), OS);
}
void TypePrinter::printDeducedTemplateSpecializationBefore(
const DeducedTemplateSpecializationType *T, raw_ostream &OS) {
// If the type has been deduced, print the deduced type.
if (!T->getDeducedType().isNull()) {
printBefore(T->getDeducedType(), OS);
} else {
IncludeStrongLifetimeRAII Strong(Policy);
T->getTemplateName().print(OS, Policy);
spaceBeforePlaceHolder(OS);
}
}
void TypePrinter::printDeducedTemplateSpecializationAfter(
const DeducedTemplateSpecializationType *T, raw_ostream &OS) {
// If the type has been deduced, print the deduced type.
if (!T->getDeducedType().isNull())
printAfter(T->getDeducedType(), OS);
}
void TypePrinter::printAtomicBefore(const AtomicType *T, raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
OS << "_Atomic(";
print(T->getValueType(), OS, StringRef());
OS << ')';
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printAtomicAfter(const AtomicType *T, raw_ostream &OS) {}
void TypePrinter::printPipeBefore(const PipeType *T, raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
if (T->isReadOnly())
OS << "read_only ";
else
OS << "write_only ";
OS << "pipe ";
print(T->getElementType(), OS, StringRef());
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printPipeAfter(const PipeType *T, raw_ostream &OS) {}
/// Appends the given scope to the end of a string.
void TypePrinter::AppendScope(DeclContext *DC, raw_ostream &OS) {
if (DC->isTranslationUnit()) return;
if (DC->isFunctionOrMethod()) return;
AppendScope(DC->getParent(), OS);
if (const auto *NS = dyn_cast<NamespaceDecl>(DC)) {
if (Policy.SuppressUnwrittenScope &&
(NS->isAnonymousNamespace() || NS->isInline()))
return;
if (NS->getIdentifier())
OS << NS->getName() << "::";
else
OS << "(anonymous namespace)::";
} else if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(DC)) {
IncludeStrongLifetimeRAII Strong(Policy);
OS << Spec->getIdentifier()->getName();
const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs();
printTemplateArgumentList(OS, TemplateArgs.asArray(), Policy);
OS << "::";
} else if (const auto *Tag = dyn_cast<TagDecl>(DC)) {
if (TypedefNameDecl *Typedef = Tag->getTypedefNameForAnonDecl())
OS << Typedef->getIdentifier()->getName() << "::";
else if (Tag->getIdentifier())
OS << Tag->getIdentifier()->getName() << "::";
else
return;
}
}
void TypePrinter::printTag(TagDecl *D, raw_ostream &OS) {
if (Policy.IncludeTagDefinition) {
PrintingPolicy SubPolicy = Policy;
SubPolicy.IncludeTagDefinition = false;
D->print(OS, SubPolicy, Indentation);
spaceBeforePlaceHolder(OS);
return;
}
bool HasKindDecoration = false;
// We don't print tags unless this is an elaborated type.
// In C, we just assume every RecordType is an elaborated type.
if (!Policy.SuppressTagKeyword && !D->getTypedefNameForAnonDecl()) {
HasKindDecoration = true;
OS << D->getKindName();
OS << ' ';
}
// Compute the full nested-name-specifier for this type.
// In C, this will always be empty except when the type
// being printed is anonymous within other Record.
if (!Policy.SuppressScope)
AppendScope(D->getDeclContext(), OS);
if (const IdentifierInfo *II = D->getIdentifier())
OS << II->getName();
else if (TypedefNameDecl *Typedef = D->getTypedefNameForAnonDecl()) {
assert(Typedef->getIdentifier() && "Typedef without identifier?");
OS << Typedef->getIdentifier()->getName();
} else {
// Make an unambiguous representation for anonymous types, e.g.
// (anonymous enum at /usr/include/string.h:120:9)
OS << (Policy.MSVCFormatting ? '`' : '(');
if (isa<CXXRecordDecl>(D) && cast<CXXRecordDecl>(D)->isLambda()) {
OS << "lambda";
HasKindDecoration = true;
} else {
OS << "anonymous";
}
if (Policy.AnonymousTagLocations) {
// Suppress the redundant tag keyword if we just printed one.
// We don't have to worry about ElaboratedTypes here because you can't
// refer to an anonymous type with one.
if (!HasKindDecoration)
OS << " " << D->getKindName();
PresumedLoc PLoc = D->getASTContext().getSourceManager().getPresumedLoc(
D->getLocation());
if (PLoc.isValid()) {
OS << " at " << PLoc.getFilename()
<< ':' << PLoc.getLine()
<< ':' << PLoc.getColumn();
}
}
OS << (Policy.MSVCFormatting ? '\'' : ')');
}
// If this is a class template specialization, print the template
// arguments.
if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
ArrayRef<TemplateArgument> Args;
if (TypeSourceInfo *TAW = Spec->getTypeAsWritten()) {
const TemplateSpecializationType *TST =
cast<TemplateSpecializationType>(TAW->getType());
Args = TST->template_arguments();
} else {
const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs();
Args = TemplateArgs.asArray();
}
IncludeStrongLifetimeRAII Strong(Policy);
printTemplateArgumentList(OS, Args, Policy);
}
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printRecordBefore(const RecordType *T, raw_ostream &OS) {
printTag(T->getDecl(), OS);
}
void TypePrinter::printRecordAfter(const RecordType *T, raw_ostream &OS) {}
void TypePrinter::printEnumBefore(const EnumType *T, raw_ostream &OS) {
printTag(T->getDecl(), OS);
}
void TypePrinter::printEnumAfter(const EnumType *T, raw_ostream &OS) {}
void TypePrinter::printTemplateTypeParmBefore(const TemplateTypeParmType *T,
raw_ostream &OS) {
if (IdentifierInfo *Id = T->getIdentifier())
OS << Id->getName();
else
OS << "type-parameter-" << T->getDepth() << '-' << T->getIndex();
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printTemplateTypeParmAfter(const TemplateTypeParmType *T,
raw_ostream &OS) {}
void TypePrinter::printSubstTemplateTypeParmBefore(
const SubstTemplateTypeParmType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
printBefore(T->getReplacementType(), OS);
}
void TypePrinter::printSubstTemplateTypeParmAfter(
const SubstTemplateTypeParmType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
printAfter(T->getReplacementType(), OS);
}
void TypePrinter::printSubstTemplateTypeParmPackBefore(
const SubstTemplateTypeParmPackType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
printTemplateTypeParmBefore(T->getReplacedParameter(), OS);
}
void TypePrinter::printSubstTemplateTypeParmPackAfter(
const SubstTemplateTypeParmPackType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
printTemplateTypeParmAfter(T->getReplacedParameter(), OS);
}
void TypePrinter::printTemplateSpecializationBefore(
const TemplateSpecializationType *T,
raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
T->getTemplateName().print(OS, Policy);
printTemplateArgumentList(OS, T->template_arguments(), Policy);
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printTemplateSpecializationAfter(
const TemplateSpecializationType *T,
raw_ostream &OS) {}
void TypePrinter::printInjectedClassNameBefore(const InjectedClassNameType *T,
raw_ostream &OS) {
printTemplateSpecializationBefore(T->getInjectedTST(), OS);
}
void TypePrinter::printInjectedClassNameAfter(const InjectedClassNameType *T,
raw_ostream &OS) {}
void TypePrinter::printElaboratedBefore(const ElaboratedType *T,
raw_ostream &OS) {
if (Policy.IncludeTagDefinition && T->getOwnedTagDecl()) {
TagDecl *OwnedTagDecl = T->getOwnedTagDecl();
assert(OwnedTagDecl->getTypeForDecl() == T->getNamedType().getTypePtr() &&
"OwnedTagDecl expected to be a declaration for the type");
PrintingPolicy SubPolicy = Policy;
SubPolicy.IncludeTagDefinition = false;
OwnedTagDecl->print(OS, SubPolicy, Indentation);
spaceBeforePlaceHolder(OS);
return;
}
// The tag definition will take care of these.
if (!Policy.IncludeTagDefinition)
{
OS << TypeWithKeyword::getKeywordName(T->getKeyword());
if (T->getKeyword() != ETK_None)
OS << " ";
NestedNameSpecifier *Qualifier = T->getQualifier();
if (Qualifier)
Qualifier->print(OS, Policy);
}
ElaboratedTypePolicyRAII PolicyRAII(Policy);
printBefore(T->getNamedType(), OS);
}
void TypePrinter::printElaboratedAfter(const ElaboratedType *T,
raw_ostream &OS) {
if (Policy.IncludeTagDefinition && T->getOwnedTagDecl())
return;
ElaboratedTypePolicyRAII PolicyRAII(Policy);
printAfter(T->getNamedType(), OS);
}
void TypePrinter::printParenBefore(const ParenType *T, raw_ostream &OS) {
if (!HasEmptyPlaceHolder && !isa<FunctionType>(T->getInnerType())) {
printBefore(T->getInnerType(), OS);
OS << '(';
} else
printBefore(T->getInnerType(), OS);
}
void TypePrinter::printParenAfter(const ParenType *T, raw_ostream &OS) {
if (!HasEmptyPlaceHolder && !isa<FunctionType>(T->getInnerType())) {
OS << ')';
printAfter(T->getInnerType(), OS);
} else
printAfter(T->getInnerType(), OS);
}
void TypePrinter::printDependentNameBefore(const DependentNameType *T,
raw_ostream &OS) {
OS << TypeWithKeyword::getKeywordName(T->getKeyword());
if (T->getKeyword() != ETK_None)
OS << " ";
T->getQualifier()->print(OS, Policy);
OS << T->getIdentifier()->getName();
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printDependentNameAfter(const DependentNameType *T,
raw_ostream &OS) {}
void TypePrinter::printDependentTemplateSpecializationBefore(
const DependentTemplateSpecializationType *T, raw_ostream &OS) {
IncludeStrongLifetimeRAII Strong(Policy);
OS << TypeWithKeyword::getKeywordName(T->getKeyword());
if (T->getKeyword() != ETK_None)
OS << " ";
if (T->getQualifier())
T->getQualifier()->print(OS, Policy);
OS << T->getIdentifier()->getName();
printTemplateArgumentList(OS, T->template_arguments(), Policy);
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printDependentTemplateSpecializationAfter(
const DependentTemplateSpecializationType *T, raw_ostream &OS) {}
void TypePrinter::printPackExpansionBefore(const PackExpansionType *T,
raw_ostream &OS) {
printBefore(T->getPattern(), OS);
}
void TypePrinter::printPackExpansionAfter(const PackExpansionType *T,
raw_ostream &OS) {
printAfter(T->getPattern(), OS);
OS << "...";
}
void TypePrinter::printAttributedBefore(const AttributedType *T,
raw_ostream &OS) {
// FIXME: Generate this with TableGen.
// Prefer the macro forms of the GC and ownership qualifiers.
if (T->getAttrKind() == attr::ObjCGC ||
T->getAttrKind() == attr::ObjCOwnership)
return printBefore(T->getEquivalentType(), OS);
if (T->getAttrKind() == attr::ObjCKindOf)
OS << "__kindof ";
printBefore(T->getModifiedType(), OS);
if (T->isMSTypeSpec()) {
switch (T->getAttrKind()) {
default: return;
case attr::Ptr32: OS << " __ptr32"; break;
case attr::Ptr64: OS << " __ptr64"; break;
case attr::SPtr: OS << " __sptr"; break;
case attr::UPtr: OS << " __uptr"; break;
}
spaceBeforePlaceHolder(OS);
}
// Print nullability type specifiers.
if (T->getImmediateNullability()) {
if (T->getAttrKind() == attr::TypeNonNull)
OS << " _Nonnull";
else if (T->getAttrKind() == attr::TypeNullable)
OS << " _Nullable";
else if (T->getAttrKind() == attr::TypeNullUnspecified)
OS << " _Null_unspecified";
else
llvm_unreachable("unhandled nullability");
spaceBeforePlaceHolder(OS);
}
}
void TypePrinter::printAttributedAfter(const AttributedType *T,
raw_ostream &OS) {
// FIXME: Generate this with TableGen.
// Prefer the macro forms of the GC and ownership qualifiers.
if (T->getAttrKind() == attr::ObjCGC ||
T->getAttrKind() == attr::ObjCOwnership)
return printAfter(T->getEquivalentType(), OS);
// If this is a calling convention attribute, don't print the implicit CC from
// the modified type.
SaveAndRestore<bool> MaybeSuppressCC(InsideCCAttribute, T->isCallingConv());
printAfter(T->getModifiedType(), OS);
// Some attributes are printed as qualifiers before the type, so we have
// nothing left to do.
if (T->getAttrKind() == attr::ObjCKindOf ||
T->isMSTypeSpec() || T->getImmediateNullability())
return;
// Don't print the inert __unsafe_unretained attribute at all.
if (T->getAttrKind() == attr::ObjCInertUnsafeUnretained)
return;
// Don't print ns_returns_retained unless it had an effect.
if (T->getAttrKind() == attr::NSReturnsRetained &&
!T->getEquivalentType()->castAs<FunctionType>()
->getExtInfo().getProducesResult())
return;
if (T->getAttrKind() == attr::LifetimeBound) {
OS << " [[clang::lifetimebound]]";
return;
}
OS << " __attribute__((";
switch (T->getAttrKind()) {
#define TYPE_ATTR(NAME)
#define DECL_OR_TYPE_ATTR(NAME)
#define ATTR(NAME) case attr::NAME:
#include "clang/Basic/AttrList.inc"
llvm_unreachable("non-type attribute attached to type");
case attr::OpenCLPrivateAddressSpace:
case attr::OpenCLGlobalAddressSpace:
case attr::OpenCLLocalAddressSpace:
case attr::OpenCLConstantAddressSpace:
case attr::OpenCLGenericAddressSpace:
// FIXME: Update printAttributedBefore to print these once we generate
// AttributedType nodes for them.
break;
case attr::LifetimeBound:
case attr::TypeNonNull:
case attr::TypeNullable:
case attr::TypeNullUnspecified:
case attr::ObjCGC:
case attr::ObjCInertUnsafeUnretained:
case attr::ObjCKindOf:
case attr::ObjCOwnership:
case attr::Ptr32:
case attr::Ptr64:
case attr::SPtr:
case attr::UPtr:
llvm_unreachable("This attribute should have been handled already");
case attr::NSReturnsRetained:
OS << "ns_returns_retained";
break;
// FIXME: When Sema learns to form this AttributedType, avoid printing the
// attribute again in printFunctionProtoAfter.
case attr::AnyX86NoCfCheck: OS << "nocf_check"; break;
case attr::CDecl: OS << "cdecl"; break;
case attr::FastCall: OS << "fastcall"; break;
case attr::StdCall: OS << "stdcall"; break;
case attr::ThisCall: OS << "thiscall"; break;
case attr::SwiftCall: OS << "swiftcall"; break;
case attr::VectorCall: OS << "vectorcall"; break;
case attr::Pascal: OS << "pascal"; break;
case attr::MSABI: OS << "ms_abi"; break;
case attr::SysVABI: OS << "sysv_abi"; break;
case attr::RegCall: OS << "regcall"; break;
case attr::Pcs: {
OS << "pcs(";
QualType t = T->getEquivalentType();
while (!t->isFunctionType())
t = t->getPointeeType();
OS << (t->getAs<FunctionType>()->getCallConv() == CC_AAPCS ?
"\"aapcs\"" : "\"aapcs-vfp\"");
OS << ')';
break;
}
case attr::IntelOclBicc: OS << "inteloclbicc"; break;
case attr::PreserveMost:
OS << "preserve_most";
break;
case attr::PreserveAll:
OS << "preserve_all";
break;
}
OS << "))";
}
void TypePrinter::printObjCInterfaceBefore(const ObjCInterfaceType *T,
raw_ostream &OS) {
OS << T->getDecl()->getName();
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printObjCInterfaceAfter(const ObjCInterfaceType *T,
raw_ostream &OS) {}
void TypePrinter::printObjCTypeParamBefore(const ObjCTypeParamType *T,
raw_ostream &OS) {
OS << T->getDecl()->getName();
if (!T->qual_empty()) {
bool isFirst = true;
OS << '<';
for (const auto *I : T->quals()) {
if (isFirst)
isFirst = false;
else
OS << ',';
OS << I->getName();
}
OS << '>';
}
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printObjCTypeParamAfter(const ObjCTypeParamType *T,
raw_ostream &OS) {}
void TypePrinter::printObjCObjectBefore(const ObjCObjectType *T,
raw_ostream &OS) {
if (T->qual_empty() && T->isUnspecializedAsWritten() &&
!T->isKindOfTypeAsWritten())
return printBefore(T->getBaseType(), OS);
if (T->isKindOfTypeAsWritten())
OS << "__kindof ";
print(T->getBaseType(), OS, StringRef());
if (T->isSpecializedAsWritten()) {
bool isFirst = true;
OS << '<';
for (auto typeArg : T->getTypeArgsAsWritten()) {
if (isFirst)
isFirst = false;
else
OS << ",";
print(typeArg, OS, StringRef());
}
OS << '>';
}
if (!T->qual_empty()) {
bool isFirst = true;
OS << '<';
for (const auto *I : T->quals()) {
if (isFirst)
isFirst = false;
else
OS << ',';
OS << I->getName();
}
OS << '>';
}
spaceBeforePlaceHolder(OS);
}
void TypePrinter::printObjCObjectAfter(const ObjCObjectType *T,
raw_ostream &OS) {
if (T->qual_empty() && T->isUnspecializedAsWritten() &&
!T->isKindOfTypeAsWritten())
return printAfter(T->getBaseType(), OS);
}
void TypePrinter::printObjCObjectPointerBefore(const ObjCObjectPointerType *T,
raw_ostream &OS) {
printBefore(T->getPointeeType(), OS);
// If we need to print the pointer, print it now.
if (!T->isObjCIdType() && !T->isObjCQualifiedIdType() &&
!T->isObjCClassType() && !T->isObjCQualifiedClassType()) {
if (HasEmptyPlaceHolder)
OS << ' ';
OS << '*';
}
}
void TypePrinter::printObjCObjectPointerAfter(const ObjCObjectPointerType *T,
raw_ostream &OS) {}
static
const TemplateArgument &getArgument(const TemplateArgument &A) { return A; }
static const TemplateArgument &getArgument(const TemplateArgumentLoc &A) {
return A.getArgument();
}
template<typename TA>
static void printTo(raw_ostream &OS, ArrayRef<TA> Args,
const PrintingPolicy &Policy, bool SkipBrackets) {
const char *Comma = Policy.MSVCFormatting ? "," : ", ";
if (!SkipBrackets)
OS << '<';
bool NeedSpace = false;
bool FirstArg = true;
for (const auto &Arg : Args) {
// Print the argument into a string.
SmallString<128> Buf;
llvm::raw_svector_ostream ArgOS(Buf);
const TemplateArgument &Argument = getArgument(Arg);
if (Argument.getKind() == TemplateArgument::Pack) {
if (Argument.pack_size() && !FirstArg)
OS << Comma;
printTo(ArgOS, Argument.getPackAsArray(), Policy, true);
} else {
if (!FirstArg)
OS << Comma;
Argument.print(Policy, ArgOS);
}
StringRef ArgString = ArgOS.str();
// If this is the first argument and its string representation
// begins with the global scope specifier ('::foo'), add a space
// to avoid printing the diagraph '<:'.
if (FirstArg && !ArgString.empty() && ArgString[0] == ':')
OS << ' ';
OS << ArgString;
NeedSpace = (!ArgString.empty() && ArgString.back() == '>');
FirstArg = false;
}
// If the last character of our string is '>', add another space to
// keep the two '>''s separate tokens. We don't *have* to do this in
// C++0x, but it's still good hygiene.
if (NeedSpace)
OS << ' ';
if (!SkipBrackets)
OS << '>';
}
void clang::printTemplateArgumentList(raw_ostream &OS,
const TemplateArgumentListInfo &Args,
const PrintingPolicy &Policy) {
return printTo(OS, Args.arguments(), Policy, false);
}
void clang::printTemplateArgumentList(raw_ostream &OS,
ArrayRef<TemplateArgument> Args,
const PrintingPolicy &Policy) {
printTo(OS, Args, Policy, false);
}
void clang::printTemplateArgumentList(raw_ostream &OS,
ArrayRef<TemplateArgumentLoc> Args,
const PrintingPolicy &Policy) {
printTo(OS, Args, Policy, false);
}
std::string Qualifiers::getAsString() const {
LangOptions LO;
return getAsString(PrintingPolicy(LO));
}
// Appends qualifiers to the given string, separated by spaces. Will
// prefix a space if the string is non-empty. Will not append a final
// space.
std::string Qualifiers::getAsString(const PrintingPolicy &Policy) const {
SmallString<64> Buf;
llvm::raw_svector_ostream StrOS(Buf);
print(StrOS, Policy);
return StrOS.str();
}
bool Qualifiers::isEmptyWhenPrinted(const PrintingPolicy &Policy) const {
if (getCVRQualifiers())
return false;
if (getAddressSpace() != LangAS::Default)
return false;
if (getObjCGCAttr())
return false;
if (Qualifiers::ObjCLifetime lifetime = getObjCLifetime())
if (!(lifetime == Qualifiers::OCL_Strong && Policy.SuppressStrongLifetime))
return false;
return true;
}
// Appends qualifiers to the given string, separated by spaces. Will
// prefix a space if the string is non-empty. Will not append a final
// space.
void Qualifiers::print(raw_ostream &OS, const PrintingPolicy& Policy,
bool appendSpaceIfNonEmpty) const {
bool addSpace = false;
unsigned quals = getCVRQualifiers();
if (quals) {
AppendTypeQualList(OS, quals, Policy.Restrict);
addSpace = true;
}
if (hasUnaligned()) {
if (addSpace)
OS << ' ';
OS << "__unaligned";
addSpace = true;
}
LangAS addrspace = getAddressSpace();
if (addrspace != LangAS::Default) {
if (addrspace != LangAS::opencl_private) {
if (addSpace)
OS << ' ';
addSpace = true;
switch (addrspace) {
case LangAS::opencl_global:
OS << "__global";
break;
case LangAS::opencl_local:
OS << "__local";
break;
case LangAS::opencl_private:
break;
case LangAS::opencl_constant:
case LangAS::cuda_constant:
OS << "__constant";
break;
case LangAS::opencl_generic:
OS << "__generic";
break;
case LangAS::cuda_device:
OS << "__device";
break;
case LangAS::cuda_shared:
OS << "__shared";
break;
default:
OS << "__attribute__((address_space(";
OS << toTargetAddressSpace(addrspace);
OS << ")))";
}
}
}
if (Qualifiers::GC gc = getObjCGCAttr()) {
if (addSpace)
OS << ' ';
addSpace = true;
if (gc == Qualifiers::Weak)
OS << "__weak";
else
OS << "__strong";
}
if (Qualifiers::ObjCLifetime lifetime = getObjCLifetime()) {
if (!(lifetime == Qualifiers::OCL_Strong && Policy.SuppressStrongLifetime)){
if (addSpace)
OS << ' ';
addSpace = true;
}
switch (lifetime) {
case Qualifiers::OCL_None: llvm_unreachable("none but true");
case Qualifiers::OCL_ExplicitNone: OS << "__unsafe_unretained"; break;
case Qualifiers::OCL_Strong:
if (!Policy.SuppressStrongLifetime)
OS << "__strong";
break;
case Qualifiers::OCL_Weak: OS << "__weak"; break;
case Qualifiers::OCL_Autoreleasing: OS << "__autoreleasing"; break;
}
}
if (appendSpaceIfNonEmpty && addSpace)
OS << ' ';
}
std::string QualType::getAsString() const {
return getAsString(split(), LangOptions());
}
std::string QualType::getAsString(const PrintingPolicy &Policy) const {
std::string S;
getAsStringInternal(S, Policy);
return S;
}
std::string QualType::getAsString(const Type *ty, Qualifiers qs,
const PrintingPolicy &Policy) {
std::string buffer;
getAsStringInternal(ty, qs, buffer, Policy);
return buffer;
}
void QualType::print(const Type *ty, Qualifiers qs,
raw_ostream &OS, const PrintingPolicy &policy,
const Twine &PlaceHolder, unsigned Indentation) {
SmallString<128> PHBuf;
StringRef PH = PlaceHolder.toStringRef(PHBuf);
TypePrinter(policy, Indentation).print(ty, qs, OS, PH);
}
void QualType::getAsStringInternal(const Type *ty, Qualifiers qs,
std::string &buffer,
const PrintingPolicy &policy) {
SmallString<256> Buf;
llvm::raw_svector_ostream StrOS(Buf);
TypePrinter(policy).print(ty, qs, StrOS, buffer);
std::string str = StrOS.str();
buffer.swap(str);
}
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