John McCall | 275c10a | 2009-10-29 07:48:15 +0000 | [diff] [blame] | 1 | //===--- TemplateBase.cpp - Common template AST class implementation ------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements common classes used throughout C++ template |
| 11 | // representations. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #include "llvm/ADT/FoldingSet.h" |
| 16 | #include "clang/AST/TemplateBase.h" |
| 17 | #include "clang/AST/DeclBase.h" |
Douglas Gregor | 74295b3 | 2009-11-23 12:52:47 +0000 | [diff] [blame] | 18 | #include "clang/AST/DeclTemplate.h" |
John McCall | 275c10a | 2009-10-29 07:48:15 +0000 | [diff] [blame] | 19 | #include "clang/AST/Expr.h" |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 20 | #include "clang/AST/TypeLoc.h" |
Douglas Gregor | a933319 | 2010-05-08 17:41:32 +0000 | [diff] [blame] | 21 | #include "clang/Basic/Diagnostic.h" |
John McCall | 275c10a | 2009-10-29 07:48:15 +0000 | [diff] [blame] | 22 | |
| 23 | using namespace clang; |
| 24 | |
| 25 | //===----------------------------------------------------------------------===// |
| 26 | // TemplateArgument Implementation |
| 27 | //===----------------------------------------------------------------------===// |
| 28 | |
John McCall | 275c10a | 2009-10-29 07:48:15 +0000 | [diff] [blame] | 29 | /// \brief Construct a template argument pack. |
| 30 | void TemplateArgument::setArgumentPack(TemplateArgument *args, unsigned NumArgs, |
| 31 | bool CopyArgs) { |
| 32 | assert(isNull() && "Must call setArgumentPack on a null argument"); |
| 33 | |
| 34 | Kind = Pack; |
| 35 | Args.NumArgs = NumArgs; |
| 36 | Args.CopyArgs = CopyArgs; |
| 37 | if (!Args.CopyArgs) { |
| 38 | Args.Args = args; |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | // FIXME: Allocate in ASTContext |
| 43 | Args.Args = new TemplateArgument[NumArgs]; |
| 44 | for (unsigned I = 0; I != Args.NumArgs; ++I) |
| 45 | Args.Args[I] = args[I]; |
| 46 | } |
| 47 | |
| 48 | void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID, |
| 49 | ASTContext &Context) const { |
| 50 | ID.AddInteger(Kind); |
| 51 | switch (Kind) { |
| 52 | case Null: |
| 53 | break; |
| 54 | |
| 55 | case Type: |
| 56 | getAsType().Profile(ID); |
| 57 | break; |
| 58 | |
| 59 | case Declaration: |
| 60 | ID.AddPointer(getAsDecl()? getAsDecl()->getCanonicalDecl() : 0); |
| 61 | break; |
| 62 | |
Douglas Gregor | 788cd06 | 2009-11-11 01:00:40 +0000 | [diff] [blame] | 63 | case Template: |
Douglas Gregor | 74295b3 | 2009-11-23 12:52:47 +0000 | [diff] [blame] | 64 | if (TemplateTemplateParmDecl *TTP |
| 65 | = dyn_cast_or_null<TemplateTemplateParmDecl>( |
| 66 | getAsTemplate().getAsTemplateDecl())) { |
| 67 | ID.AddBoolean(true); |
| 68 | ID.AddInteger(TTP->getDepth()); |
| 69 | ID.AddInteger(TTP->getPosition()); |
| 70 | } else { |
| 71 | ID.AddBoolean(false); |
| 72 | ID.AddPointer(Context.getCanonicalTemplateName(getAsTemplate()) |
| 73 | .getAsVoidPointer()); |
| 74 | } |
Douglas Gregor | 788cd06 | 2009-11-11 01:00:40 +0000 | [diff] [blame] | 75 | break; |
| 76 | |
John McCall | 275c10a | 2009-10-29 07:48:15 +0000 | [diff] [blame] | 77 | case Integral: |
| 78 | getAsIntegral()->Profile(ID); |
| 79 | getIntegralType().Profile(ID); |
| 80 | break; |
| 81 | |
| 82 | case Expression: |
| 83 | getAsExpr()->Profile(ID, Context, true); |
| 84 | break; |
| 85 | |
| 86 | case Pack: |
| 87 | ID.AddInteger(Args.NumArgs); |
| 88 | for (unsigned I = 0; I != Args.NumArgs; ++I) |
| 89 | Args.Args[I].Profile(ID, Context); |
| 90 | } |
| 91 | } |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 92 | |
John McCall | 3350095 | 2010-06-11 00:33:02 +0000 | [diff] [blame] | 93 | bool TemplateArgument::structurallyEquals(const TemplateArgument &Other) const { |
| 94 | if (getKind() != Other.getKind()) return false; |
| 95 | |
| 96 | switch (getKind()) { |
| 97 | case Null: |
| 98 | case Type: |
| 99 | case Declaration: |
| 100 | case Template: |
| 101 | case Expression: |
| 102 | return TypeOrValue == Other.TypeOrValue; |
| 103 | |
| 104 | case Integral: |
| 105 | return getIntegralType() == Other.getIntegralType() && |
| 106 | *getAsIntegral() == *Other.getAsIntegral(); |
| 107 | |
| 108 | case Pack: |
| 109 | if (Args.NumArgs != Other.Args.NumArgs) return false; |
| 110 | for (unsigned I = 0, E = Args.NumArgs; I != E; ++I) |
| 111 | if (!Args.Args[I].structurallyEquals(Other.Args.Args[I])) |
| 112 | return false; |
| 113 | return true; |
| 114 | } |
| 115 | |
| 116 | // Suppress warnings. |
| 117 | return false; |
| 118 | } |
| 119 | |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 120 | //===----------------------------------------------------------------------===// |
| 121 | // TemplateArgumentLoc Implementation |
| 122 | //===----------------------------------------------------------------------===// |
| 123 | |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 124 | SourceRange TemplateArgumentLoc::getSourceRange() const { |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 125 | switch (Argument.getKind()) { |
| 126 | case TemplateArgument::Expression: |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 127 | return getSourceExpression()->getSourceRange(); |
Zhanyong Wan | f38ef0c | 2010-09-03 23:50:56 +0000 | [diff] [blame^] | 128 | |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 129 | case TemplateArgument::Declaration: |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 130 | return getSourceDeclExpression()->getSourceRange(); |
Zhanyong Wan | f38ef0c | 2010-09-03 23:50:56 +0000 | [diff] [blame^] | 131 | |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 132 | case TemplateArgument::Type: |
Zhanyong Wan | f38ef0c | 2010-09-03 23:50:56 +0000 | [diff] [blame^] | 133 | if (TypeSourceInfo *TSI = getTypeSourceInfo()) |
| 134 | return TSI->getTypeLoc().getSourceRange(); |
| 135 | else |
| 136 | return SourceRange(); |
| 137 | |
Douglas Gregor | 788cd06 | 2009-11-11 01:00:40 +0000 | [diff] [blame] | 138 | case TemplateArgument::Template: |
| 139 | if (getTemplateQualifierRange().isValid()) |
| 140 | return SourceRange(getTemplateQualifierRange().getBegin(), |
| 141 | getTemplateNameLoc()); |
| 142 | return SourceRange(getTemplateNameLoc()); |
Zhanyong Wan | f38ef0c | 2010-09-03 23:50:56 +0000 | [diff] [blame^] | 143 | |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 144 | case TemplateArgument::Integral: |
| 145 | case TemplateArgument::Pack: |
| 146 | case TemplateArgument::Null: |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 147 | return SourceRange(); |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | // Silence bonus gcc warning. |
John McCall | 828bff2 | 2009-10-29 18:45:58 +0000 | [diff] [blame] | 151 | return SourceRange(); |
John McCall | 833ca99 | 2009-10-29 08:12:44 +0000 | [diff] [blame] | 152 | } |
Douglas Gregor | a933319 | 2010-05-08 17:41:32 +0000 | [diff] [blame] | 153 | |
| 154 | const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB, |
| 155 | const TemplateArgument &Arg) { |
| 156 | switch (Arg.getKind()) { |
| 157 | case TemplateArgument::Null: |
John McCall | 67c4a0c | 2010-08-05 04:58:04 +0000 | [diff] [blame] | 158 | // This is bad, but not as bad as crashing because of argument |
| 159 | // count mismatches. |
| 160 | return DB << "(null template argument)"; |
Douglas Gregor | a933319 | 2010-05-08 17:41:32 +0000 | [diff] [blame] | 161 | |
| 162 | case TemplateArgument::Type: |
| 163 | return DB << Arg.getAsType(); |
| 164 | |
| 165 | case TemplateArgument::Declaration: |
| 166 | return DB << Arg.getAsDecl(); |
| 167 | |
| 168 | case TemplateArgument::Integral: |
| 169 | return DB << Arg.getAsIntegral()->toString(10); |
| 170 | |
| 171 | case TemplateArgument::Template: |
| 172 | return DB << Arg.getAsTemplate(); |
| 173 | |
| 174 | case TemplateArgument::Expression: { |
| 175 | // This shouldn't actually ever happen, so it's okay that we're |
| 176 | // regurgitating an expression here. |
| 177 | // FIXME: We're guessing at LangOptions! |
| 178 | llvm::SmallString<32> Str; |
| 179 | llvm::raw_svector_ostream OS(Str); |
| 180 | LangOptions LangOpts; |
| 181 | LangOpts.CPlusPlus = true; |
| 182 | PrintingPolicy Policy(LangOpts); |
| 183 | Arg.getAsExpr()->printPretty(OS, 0, Policy); |
| 184 | return DB << OS.str(); |
| 185 | } |
| 186 | |
| 187 | case TemplateArgument::Pack: |
| 188 | // FIXME: Format arguments in a list! |
| 189 | return DB << "<parameter pack>"; |
| 190 | } |
| 191 | |
| 192 | return DB; |
| 193 | } |