| //===--- TemplateBase.cpp - Common template AST class implementation ------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements common classes used throughout C++ template |
| // representations. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/FoldingSet.h" |
| #include "clang/AST/TemplateBase.h" |
| #include "clang/AST/DeclBase.h" |
| #include "clang/AST/DeclTemplate.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/AST/TypeLoc.h" |
| #include "clang/Basic/Diagnostic.h" |
| |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // 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"); |
| |
| Kind = Pack; |
| Args.NumArgs = NumArgs; |
| Args.CopyArgs = CopyArgs; |
| if (!Args.CopyArgs) { |
| Args.Args = args; |
| return; |
| } |
| |
| // FIXME: Allocate in ASTContext |
| Args.Args = new TemplateArgument[NumArgs]; |
| for (unsigned I = 0; I != Args.NumArgs; ++I) |
| Args.Args[I] = args[I]; |
| } |
| |
| void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID, |
| ASTContext &Context) const { |
| ID.AddInteger(Kind); |
| switch (Kind) { |
| case Null: |
| break; |
| |
| case Type: |
| getAsType().Profile(ID); |
| break; |
| |
| case Declaration: |
| ID.AddPointer(getAsDecl()? getAsDecl()->getCanonicalDecl() : 0); |
| break; |
| |
| case Template: |
| if (TemplateTemplateParmDecl *TTP |
| = dyn_cast_or_null<TemplateTemplateParmDecl>( |
| getAsTemplate().getAsTemplateDecl())) { |
| ID.AddBoolean(true); |
| ID.AddInteger(TTP->getDepth()); |
| ID.AddInteger(TTP->getPosition()); |
| } else { |
| ID.AddBoolean(false); |
| ID.AddPointer(Context.getCanonicalTemplateName(getAsTemplate()) |
| .getAsVoidPointer()); |
| } |
| break; |
| |
| case Integral: |
| getAsIntegral()->Profile(ID); |
| getIntegralType().Profile(ID); |
| break; |
| |
| case Expression: |
| getAsExpr()->Profile(ID, Context, true); |
| break; |
| |
| case Pack: |
| ID.AddInteger(Args.NumArgs); |
| for (unsigned I = 0; I != Args.NumArgs; ++I) |
| Args.Args[I].Profile(ID, Context); |
| } |
| } |
| |
| bool TemplateArgument::structurallyEquals(const TemplateArgument &Other) const { |
| if (getKind() != Other.getKind()) return false; |
| |
| switch (getKind()) { |
| case Null: |
| case Type: |
| case Declaration: |
| case Template: |
| case Expression: |
| return TypeOrValue == Other.TypeOrValue; |
| |
| case Integral: |
| return getIntegralType() == Other.getIntegralType() && |
| *getAsIntegral() == *Other.getAsIntegral(); |
| |
| case Pack: |
| if (Args.NumArgs != Other.Args.NumArgs) return false; |
| for (unsigned I = 0, E = Args.NumArgs; I != E; ++I) |
| if (!Args.Args[I].structurallyEquals(Other.Args.Args[I])) |
| return false; |
| return true; |
| } |
| |
| // Suppress warnings. |
| return false; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // TemplateArgumentLoc Implementation |
| //===----------------------------------------------------------------------===// |
| |
| SourceRange TemplateArgumentLoc::getSourceRange() const { |
| switch (Argument.getKind()) { |
| case TemplateArgument::Expression: |
| return getSourceExpression()->getSourceRange(); |
| |
| case TemplateArgument::Declaration: |
| return getSourceDeclExpression()->getSourceRange(); |
| |
| case TemplateArgument::Type: |
| return getTypeSourceInfo()->getTypeLoc().getSourceRange(); |
| |
| case TemplateArgument::Template: |
| if (getTemplateQualifierRange().isValid()) |
| return SourceRange(getTemplateQualifierRange().getBegin(), |
| getTemplateNameLoc()); |
| return SourceRange(getTemplateNameLoc()); |
| |
| case TemplateArgument::Integral: |
| case TemplateArgument::Pack: |
| case TemplateArgument::Null: |
| return SourceRange(); |
| } |
| |
| // Silence bonus gcc warning. |
| return SourceRange(); |
| } |
| |
| const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB, |
| const TemplateArgument &Arg) { |
| switch (Arg.getKind()) { |
| case TemplateArgument::Null: |
| return DB; |
| |
| case TemplateArgument::Type: |
| return DB << Arg.getAsType(); |
| |
| case TemplateArgument::Declaration: |
| return DB << Arg.getAsDecl(); |
| |
| case TemplateArgument::Integral: |
| return DB << Arg.getAsIntegral()->toString(10); |
| |
| case TemplateArgument::Template: |
| return DB << Arg.getAsTemplate(); |
| |
| 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; |
| llvm::raw_svector_ostream OS(Str); |
| LangOptions LangOpts; |
| LangOpts.CPlusPlus = true; |
| PrintingPolicy Policy(LangOpts); |
| Arg.getAsExpr()->printPretty(OS, 0, Policy); |
| return DB << OS.str(); |
| } |
| |
| case TemplateArgument::Pack: |
| // FIXME: Format arguments in a list! |
| return DB << "<parameter pack>"; |
| } |
| |
| return DB; |
| } |