Sebastian Redl | 6df6548 | 2011-09-24 17:48:25 +0000 | [diff] [blame] | 1 | //===--- MultiInitializer.cpp - Initializer expression group ----*- C++ -*-===// |
| 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 the MultiInitializer class, which can represent a list |
| 11 | // initializer or a parentheses-wrapped group of expressions in a C++ member |
| 12 | // initializer. |
| 13 | // |
| 14 | //===----------------------------------------------------------------------===// |
| 15 | |
| 16 | #include "clang/Sema/MultiInitializer.h" |
| 17 | #include "clang/Sema/Initialization.h" |
| 18 | #include "clang/Sema/Sema.h" |
| 19 | #include "clang/AST/Expr.h" |
| 20 | |
| 21 | using namespace clang; |
| 22 | |
| 23 | InitListExpr *MultiInitializer::getInitList() const { |
| 24 | return cast<InitListExpr>(InitListOrExpressions.get<Expr*>()); |
| 25 | } |
| 26 | |
| 27 | SourceLocation MultiInitializer::getStartLoc() const { |
| 28 | return isInitializerList() ? getInitList()->getLBraceLoc() : LParenLoc; |
| 29 | } |
| 30 | |
| 31 | SourceLocation MultiInitializer::getEndLoc() const { |
| 32 | return isInitializerList() ? getInitList()->getRBraceLoc() : RParenLoc; |
| 33 | } |
| 34 | |
| 35 | MultiInitializer::iterator MultiInitializer::begin() const { |
| 36 | return isInitializerList() ? getInitList()->getInits() : getExpressions(); |
| 37 | } |
| 38 | |
| 39 | MultiInitializer::iterator MultiInitializer::end() const { |
| 40 | if (isInitializerList()) { |
| 41 | InitListExpr *ILE = getInitList(); |
| 42 | return ILE->getInits() + ILE->getNumInits(); |
| 43 | } |
| 44 | return getExpressions() + NumInitializers; |
| 45 | } |
| 46 | |
| 47 | bool MultiInitializer::isTypeDependent() const { |
| 48 | if (isInitializerList()) |
| 49 | return getInitList()->isTypeDependent(); |
| 50 | for (iterator I = begin(), E = end(); I != E; ++I) { |
| 51 | if ((*I)->isTypeDependent()) |
| 52 | return true; |
| 53 | } |
| 54 | return false; |
| 55 | } |
| 56 | |
| 57 | bool MultiInitializer::DiagnoseUnexpandedParameterPack(Sema &SemaRef) const { |
| 58 | if (isInitializerList()) |
Peter Collingbourne | 05b2127 | 2011-10-23 18:59:33 +0000 | [diff] [blame] | 59 | return SemaRef.DiagnoseUnexpandedParameterPack(getInitList(), |
| 60 | Sema::UPPC_Initializer); |
Sebastian Redl | 6df6548 | 2011-09-24 17:48:25 +0000 | [diff] [blame] | 61 | for (iterator I = begin(), E = end(); I != E; ++I) { |
Peter Collingbourne | 05b2127 | 2011-10-23 18:59:33 +0000 | [diff] [blame] | 62 | if (SemaRef.DiagnoseUnexpandedParameterPack(*I, Sema::UPPC_Initializer)) |
Sebastian Redl | 6df6548 | 2011-09-24 17:48:25 +0000 | [diff] [blame] | 63 | return true; |
| 64 | } |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | Expr *MultiInitializer::CreateInitExpr(ASTContext &Ctx, QualType T) const { |
| 69 | if (isInitializerList()) |
| 70 | return InitListOrExpressions.get<Expr*>(); |
| 71 | |
| 72 | return new (Ctx) ParenListExpr(Ctx, LParenLoc, getExpressions(), |
| 73 | NumInitializers, RParenLoc, T); |
| 74 | } |
| 75 | |
| 76 | ExprResult MultiInitializer::PerformInit(Sema &SemaRef, |
| 77 | InitializedEntity Entity, |
| 78 | InitializationKind Kind) const { |
| 79 | Expr *Single; |
| 80 | Expr **Args; |
| 81 | unsigned NumArgs; |
| 82 | if (isInitializerList()) { |
| 83 | Single = InitListOrExpressions.get<Expr*>(); |
| 84 | Args = &Single; |
| 85 | NumArgs = 1; |
| 86 | } else { |
| 87 | Args = getExpressions(); |
| 88 | NumArgs = NumInitializers; |
| 89 | } |
| 90 | InitializationSequence InitSeq(SemaRef, Entity, Kind, Args, NumArgs); |
| 91 | return InitSeq.Perform(SemaRef, Entity, Kind, |
| 92 | MultiExprArg(SemaRef, Args, NumArgs), 0); |
| 93 | } |