//
//===----------------------------------------------------------------------===//
-#include "llvm/ADT/FoldingSet.h"
#include "clang/AST/TemplateBase.h"
+#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
+#include "clang/AST/ExprCXX.h"
+#include "clang/AST/Type.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/Diagnostic.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
using namespace clang;
+/// \brief Print a template integral argument value.
+///
+/// \param TemplArg the TemplateArgument instance to print.
+///
+/// \param Out the raw_ostream instance to use for printing.
+///
+/// \param Policy the printing policy for EnumConstantDecl printing.
+static void printIntegral(const TemplateArgument &TemplArg,
+ raw_ostream &Out, const PrintingPolicy& Policy) {
+ const ::clang::Type *T = TemplArg.getIntegralType().getTypePtr();
+ const llvm::APSInt &Val = TemplArg.getAsIntegral();
+
+ if (const EnumType *ET = T->getAs<EnumType>()) {
+ for (const EnumConstantDecl* ECD : ET->getDecl()->enumerators()) {
+ // In Sema::CheckTemplateArugment, enum template arguments value are
+ // extended to the size of the integer underlying the enum type. This
+ // may create a size difference between the enum value and template
+ // argument value, requiring isSameValue here instead of operator==.
+ if (llvm::APSInt::isSameValue(ECD->getInitVal(), Val)) {
+ ECD->printQualifiedName(Out, Policy);
+ return;
+ }
+ }
+ }
+
+ if (T->isBooleanType() && !Policy.MSVCFormatting) {
+ Out << (Val.getBoolValue() ? "true" : "false");
+ } else if (T->isCharType()) {
+ const char Ch = Val.getZExtValue();
+ Out << ((Ch == '\'') ? "'\\" : "'");
+ Out.write_escaped(StringRef(&Ch, 1), /*UseHexEscapes=*/ true);
+ Out << "'";
+ } else {
+ Out << Val;
+ }
+}
+
//===----------------------------------------------------------------------===//
// TemplateArgument Implementation
//===----------------------------------------------------------------------===//
-/// \brief Construct a template argument pack.
-void TemplateArgument::setArgumentPack(TemplateArgument *args, unsigned NumArgs,
- bool CopyArgs) {
- assert(isNull() && "Must call setArgumentPack on a null argument");
+TemplateArgument::TemplateArgument(ASTContext &Ctx, const llvm::APSInt &Value,
+ QualType Type) {
+ Integer.Kind = Integral;
+ // Copy the APSInt value into our decomposed form.
+ Integer.BitWidth = Value.getBitWidth();
+ Integer.IsUnsigned = Value.isUnsigned();
+ // If the value is large, we have to get additional memory from the ASTContext
+ unsigned NumWords = Value.getNumWords();
+ if (NumWords > 1) {
+ void *Mem = Ctx.Allocate(NumWords * sizeof(uint64_t));
+ std::memcpy(Mem, Value.getRawData(), NumWords * sizeof(uint64_t));
+ Integer.pVal = static_cast<uint64_t *>(Mem);
+ } else {
+ Integer.VAL = Value.getZExtValue();
+ }
+
+ Integer.Type = Type.getAsOpaquePtr();
+}
+
+TemplateArgument
+TemplateArgument::CreatePackCopy(ASTContext &Context,
+ ArrayRef<TemplateArgument> Args) {
+ if (Args.empty())
+ return getEmptyPack();
+
+ return TemplateArgument(Args.copy(Context));
+}
+
+bool TemplateArgument::isDependent() const {
+ switch (getKind()) {
+ case Null:
+ llvm_unreachable("Should not have a NULL template argument");
+
+ case Type:
+ return getAsType()->isDependentType() ||
+ isa<PackExpansionType>(getAsType());
+
+ case Template:
+ return getAsTemplate().isDependent();
+
+ case TemplateExpansion:
+ return true;
+
+ case Declaration:
+ if (DeclContext *DC = dyn_cast<DeclContext>(getAsDecl()))
+ return DC->isDependentContext();
+ return getAsDecl()->getDeclContext()->isDependentContext();
+
+ case NullPtr:
+ return false;
+
+ case Integral:
+ // Never dependent
+ return false;
- Kind = Pack;
- Args.NumArgs = NumArgs;
- Args.CopyArgs = CopyArgs;
- if (!Args.CopyArgs) {
- Args.Args = args;
- return;
+ case Expression:
+ return (getAsExpr()->isTypeDependent() || getAsExpr()->isValueDependent() ||
+ isa<PackExpansionExpr>(getAsExpr()));
+
+ case Pack:
+ for (const auto &P : pack_elements())
+ if (P.isDependent())
+ return true;
+ return false;
}
- // FIXME: Allocate in ASTContext
- Args.Args = new TemplateArgument[NumArgs];
- for (unsigned I = 0; I != Args.NumArgs; ++I)
- Args.Args[I] = args[I];
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+bool TemplateArgument::isInstantiationDependent() const {
+ switch (getKind()) {
+ case Null:
+ llvm_unreachable("Should not have a NULL template argument");
+
+ case Type:
+ return getAsType()->isInstantiationDependentType();
+
+ case Template:
+ return getAsTemplate().isInstantiationDependent();
+
+ case TemplateExpansion:
+ return true;
+
+ case Declaration:
+ if (DeclContext *DC = dyn_cast<DeclContext>(getAsDecl()))
+ return DC->isDependentContext();
+ return getAsDecl()->getDeclContext()->isDependentContext();
+
+ case NullPtr:
+ return false;
+
+ case Integral:
+ // Never dependent
+ return false;
+
+ case Expression:
+ return getAsExpr()->isInstantiationDependent();
+
+ case Pack:
+ for (const auto &P : pack_elements())
+ if (P.isInstantiationDependent())
+ return true;
+ return false;
+ }
+
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+bool TemplateArgument::isPackExpansion() const {
+ switch (getKind()) {
+ case Null:
+ case Declaration:
+ case Integral:
+ case Pack:
+ case Template:
+ case NullPtr:
+ return false;
+
+ case TemplateExpansion:
+ return true;
+
+ case Type:
+ return isa<PackExpansionType>(getAsType());
+
+ case Expression:
+ return isa<PackExpansionExpr>(getAsExpr());
+ }
+
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+bool TemplateArgument::containsUnexpandedParameterPack() const {
+ switch (getKind()) {
+ case Null:
+ case Declaration:
+ case Integral:
+ case TemplateExpansion:
+ case NullPtr:
+ break;
+
+ case Type:
+ if (getAsType()->containsUnexpandedParameterPack())
+ return true;
+ break;
+
+ case Template:
+ if (getAsTemplate().containsUnexpandedParameterPack())
+ return true;
+ break;
+
+ case Expression:
+ if (getAsExpr()->containsUnexpandedParameterPack())
+ return true;
+ break;
+
+ case Pack:
+ for (const auto &P : pack_elements())
+ if (P.containsUnexpandedParameterPack())
+ return true;
+
+ break;
+ }
+
+ return false;
+}
+
+Optional<unsigned> TemplateArgument::getNumTemplateExpansions() const {
+ assert(getKind() == TemplateExpansion);
+ if (TemplateArg.NumExpansions)
+ return TemplateArg.NumExpansions - 1;
+
+ return None;
+}
+
+QualType TemplateArgument::getNonTypeTemplateArgumentType() const {
+ switch (getKind()) {
+ case TemplateArgument::Null:
+ case TemplateArgument::Type:
+ case TemplateArgument::Template:
+ case TemplateArgument::TemplateExpansion:
+ case TemplateArgument::Pack:
+ return QualType();
+
+ case TemplateArgument::Integral:
+ return getIntegralType();
+
+ case TemplateArgument::Expression:
+ return getAsExpr()->getType();
+
+ case TemplateArgument::Declaration:
+ return getParamTypeForDecl();
+
+ case TemplateArgument::NullPtr:
+ return getNullPtrType();
+ }
+
+ llvm_unreachable("Invalid TemplateArgument Kind!");
}
void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID,
- ASTContext &Context) const {
- ID.AddInteger(Kind);
- switch (Kind) {
+ const ASTContext &Context) const {
+ ID.AddInteger(getKind());
+ switch (getKind()) {
case Null:
break;
getAsType().Profile(ID);
break;
+ case NullPtr:
+ getNullPtrType().Profile(ID);
+ break;
+
case Declaration:
- ID.AddPointer(getAsDecl()? getAsDecl()->getCanonicalDecl() : 0);
+ ID.AddPointer(getAsDecl()? getAsDecl()->getCanonicalDecl() : nullptr);
break;
case Template:
+ case TemplateExpansion: {
+ TemplateName Template = getAsTemplateOrTemplatePattern();
if (TemplateTemplateParmDecl *TTP
= dyn_cast_or_null<TemplateTemplateParmDecl>(
- getAsTemplate().getAsTemplateDecl())) {
+ Template.getAsTemplateDecl())) {
ID.AddBoolean(true);
ID.AddInteger(TTP->getDepth());
ID.AddInteger(TTP->getPosition());
+ ID.AddBoolean(TTP->isParameterPack());
} else {
ID.AddBoolean(false);
- ID.AddPointer(Context.getCanonicalTemplateName(getAsTemplate())
- .getAsVoidPointer());
+ ID.AddPointer(Context.getCanonicalTemplateName(Template)
+ .getAsVoidPointer());
}
break;
+ }
case Integral:
- getAsIntegral()->Profile(ID);
+ getAsIntegral().Profile(ID);
getIntegralType().Profile(ID);
break;
switch (getKind()) {
case Null:
case Type:
- case Declaration:
+ case Expression:
case Template:
- case Expression:
- return TypeOrValue == Other.TypeOrValue;
+ case TemplateExpansion:
+ case NullPtr:
+ return TypeOrValue.V == Other.TypeOrValue.V;
+
+ case Declaration:
+ return getAsDecl() == Other.getAsDecl();
case Integral:
return getIntegralType() == Other.getIntegralType() &&
- *getAsIntegral() == *Other.getAsIntegral();
+ getAsIntegral() == Other.getAsIntegral();
case Pack:
if (Args.NumArgs != Other.Args.NumArgs) return false;
return true;
}
- // Suppress warnings.
- return false;
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+TemplateArgument TemplateArgument::getPackExpansionPattern() const {
+ assert(isPackExpansion());
+
+ switch (getKind()) {
+ case Type:
+ return getAsType()->getAs<PackExpansionType>()->getPattern();
+
+ case Expression:
+ return cast<PackExpansionExpr>(getAsExpr())->getPattern();
+
+ case TemplateExpansion:
+ return TemplateArgument(getAsTemplateOrTemplatePattern());
+
+ case Declaration:
+ case Integral:
+ case Pack:
+ case Null:
+ case Template:
+ case NullPtr:
+ return TemplateArgument();
+ }
+
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+void TemplateArgument::print(const PrintingPolicy &Policy,
+ raw_ostream &Out) const {
+ switch (getKind()) {
+ case Null:
+ Out << "(no value)";
+ break;
+
+ case Type: {
+ PrintingPolicy SubPolicy(Policy);
+ SubPolicy.SuppressStrongLifetime = true;
+ getAsType().print(Out, SubPolicy);
+ break;
+ }
+
+ case Declaration: {
+ NamedDecl *ND = cast<NamedDecl>(getAsDecl());
+ Out << '&';
+ if (ND->getDeclName()) {
+ // FIXME: distinguish between pointer and reference args?
+ ND->printQualifiedName(Out);
+ } else {
+ Out << "(anonymous)";
+ }
+ break;
+ }
+
+ case NullPtr:
+ Out << "nullptr";
+ break;
+
+ case Template:
+ getAsTemplate().print(Out, Policy);
+ break;
+
+ case TemplateExpansion:
+ getAsTemplateOrTemplatePattern().print(Out, Policy);
+ Out << "...";
+ break;
+
+ case Integral: {
+ printIntegral(*this, Out, Policy);
+ break;
+ }
+
+ case Expression:
+ getAsExpr()->printPretty(Out, nullptr, Policy);
+ break;
+
+ case Pack:
+ Out << "<";
+ bool First = true;
+ for (const auto &P : pack_elements()) {
+ if (First)
+ First = false;
+ else
+ Out << ", ";
+
+ P.print(Policy, Out);
+ }
+ Out << ">";
+ break;
+ }
}
+void TemplateArgument::dump(raw_ostream &Out) const {
+ LangOptions LO; // FIXME! see also TemplateName::dump().
+ LO.CPlusPlus = true;
+ LO.Bool = true;
+ print(PrintingPolicy(LO), Out);
+}
+
+LLVM_DUMP_METHOD void TemplateArgument::dump() const { dump(llvm::errs()); }
+
//===----------------------------------------------------------------------===//
// TemplateArgumentLoc Implementation
//===----------------------------------------------------------------------===//
switch (Argument.getKind()) {
case TemplateArgument::Expression:
return getSourceExpression()->getSourceRange();
-
+
case TemplateArgument::Declaration:
return getSourceDeclExpression()->getSourceRange();
-
+
+ case TemplateArgument::NullPtr:
+ return getSourceNullPtrExpression()->getSourceRange();
+
case TemplateArgument::Type:
- return getTypeSourceInfo()->getTypeLoc().getSourceRange();
-
+ if (TypeSourceInfo *TSI = getTypeSourceInfo())
+ return TSI->getTypeLoc().getSourceRange();
+ else
+ return SourceRange();
+
case TemplateArgument::Template:
- if (getTemplateQualifierRange().isValid())
- return SourceRange(getTemplateQualifierRange().getBegin(),
+ if (getTemplateQualifierLoc())
+ return SourceRange(getTemplateQualifierLoc().getBeginLoc(),
getTemplateNameLoc());
return SourceRange(getTemplateNameLoc());
-
+
+ case TemplateArgument::TemplateExpansion:
+ if (getTemplateQualifierLoc())
+ return SourceRange(getTemplateQualifierLoc().getBeginLoc(),
+ getTemplateEllipsisLoc());
+ return SourceRange(getTemplateNameLoc(), getTemplateEllipsisLoc());
+
case TemplateArgument::Integral:
+ return getSourceIntegralExpression()->getSourceRange();
+
case TemplateArgument::Pack:
case TemplateArgument::Null:
return SourceRange();
}
- // Silence bonus gcc warning.
- return SourceRange();
+ llvm_unreachable("Invalid TemplateArgument Kind!");
}
const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
const TemplateArgument &Arg) {
switch (Arg.getKind()) {
case TemplateArgument::Null:
- return DB;
+ // This is bad, but not as bad as crashing because of argument
+ // count mismatches.
+ return DB << "(null template argument)";
case TemplateArgument::Type:
return DB << Arg.getAsType();
case TemplateArgument::Declaration:
return DB << Arg.getAsDecl();
+
+ case TemplateArgument::NullPtr:
+ return DB << "nullptr";
case TemplateArgument::Integral:
- return DB << Arg.getAsIntegral()->toString(10);
+ return DB << Arg.getAsIntegral().toString(10);
case TemplateArgument::Template:
return DB << Arg.getAsTemplate();
-
+
+ case TemplateArgument::TemplateExpansion:
+ return DB << Arg.getAsTemplateOrTemplatePattern() << "...";
+
case TemplateArgument::Expression: {
// This shouldn't actually ever happen, so it's okay that we're
// regurgitating an expression here.
// FIXME: We're guessing at LangOptions!
- llvm::SmallString<32> Str;
+ SmallString<32> Str;
llvm::raw_svector_ostream OS(Str);
LangOptions LangOpts;
LangOpts.CPlusPlus = true;
PrintingPolicy Policy(LangOpts);
- Arg.getAsExpr()->printPretty(OS, 0, Policy);
+ Arg.getAsExpr()->printPretty(OS, nullptr, Policy);
return DB << OS.str();
}
- case TemplateArgument::Pack:
- // FIXME: Format arguments in a list!
- return DB << "<parameter pack>";
+ case TemplateArgument::Pack: {
+ // FIXME: We're guessing at LangOptions!
+ SmallString<32> Str;
+ llvm::raw_svector_ostream OS(Str);
+ LangOptions LangOpts;
+ LangOpts.CPlusPlus = true;
+ PrintingPolicy Policy(LangOpts);
+ Arg.print(Policy, OS);
+ return DB << OS.str();
}
-
- return DB;
+ }
+
+ llvm_unreachable("Invalid TemplateArgument Kind!");
+}
+
+const ASTTemplateArgumentListInfo *
+ASTTemplateArgumentListInfo::Create(ASTContext &C,
+ const TemplateArgumentListInfo &List) {
+ std::size_t size = totalSizeToAlloc<TemplateArgumentLoc>(List.size());
+ void *Mem = C.Allocate(size, alignof(ASTTemplateArgumentListInfo));
+ return new (Mem) ASTTemplateArgumentListInfo(List);
+}
+
+ASTTemplateArgumentListInfo::ASTTemplateArgumentListInfo(
+ const TemplateArgumentListInfo &Info) {
+ LAngleLoc = Info.getLAngleLoc();
+ RAngleLoc = Info.getRAngleLoc();
+ NumTemplateArgs = Info.size();
+
+ TemplateArgumentLoc *ArgBuffer = getTrailingObjects<TemplateArgumentLoc>();
+ for (unsigned i = 0; i != NumTemplateArgs; ++i)
+ new (&ArgBuffer[i]) TemplateArgumentLoc(Info[i]);
+}
+
+void ASTTemplateKWAndArgsInfo::initializeFrom(
+ SourceLocation TemplateKWLoc, const TemplateArgumentListInfo &Info,
+ TemplateArgumentLoc *OutArgArray) {
+ this->TemplateKWLoc = TemplateKWLoc;
+ LAngleLoc = Info.getLAngleLoc();
+ RAngleLoc = Info.getRAngleLoc();
+ NumTemplateArgs = Info.size();
+
+ for (unsigned i = 0; i != NumTemplateArgs; ++i)
+ new (&OutArgArray[i]) TemplateArgumentLoc(Info[i]);
+}
+
+void ASTTemplateKWAndArgsInfo::initializeFrom(SourceLocation TemplateKWLoc) {
+ assert(TemplateKWLoc.isValid());
+ LAngleLoc = SourceLocation();
+ RAngleLoc = SourceLocation();
+ this->TemplateKWLoc = TemplateKWLoc;
+ NumTemplateArgs = 0;
+}
+
+void ASTTemplateKWAndArgsInfo::initializeFrom(
+ SourceLocation TemplateKWLoc, const TemplateArgumentListInfo &Info,
+ TemplateArgumentLoc *OutArgArray, bool &Dependent,
+ bool &InstantiationDependent, bool &ContainsUnexpandedParameterPack) {
+ this->TemplateKWLoc = TemplateKWLoc;
+ LAngleLoc = Info.getLAngleLoc();
+ RAngleLoc = Info.getRAngleLoc();
+ NumTemplateArgs = Info.size();
+
+ for (unsigned i = 0; i != NumTemplateArgs; ++i) {
+ Dependent = Dependent || Info[i].getArgument().isDependent();
+ InstantiationDependent = InstantiationDependent ||
+ Info[i].getArgument().isInstantiationDependent();
+ ContainsUnexpandedParameterPack =
+ ContainsUnexpandedParameterPack ||
+ Info[i].getArgument().containsUnexpandedParameterPack();
+
+ new (&OutArgArray[i]) TemplateArgumentLoc(Info[i]);
+ }
+}
+
+void ASTTemplateKWAndArgsInfo::copyInto(const TemplateArgumentLoc *ArgArray,
+ TemplateArgumentListInfo &Info) const {
+ Info.setLAngleLoc(LAngleLoc);
+ Info.setRAngleLoc(RAngleLoc);
+ for (unsigned I = 0; I != NumTemplateArgs; ++I)
+ Info.addArgument(ArgArray[I]);
}
projects / clang / blobdiff