[cfe-commits] r163083 - in /cfe/trunk: include/clang/AST/ include/clang/Basic/ include/clang/Sema/ include/clang/Serialization/ lib/AST/ lib/CodeGen/ lib/Parse/ lib/Sema/ lib/Serialization/ lib/StaticAnalyzer/Core/ test/Parser/ tools/libclang/

Sean Silva silvas at purdue.edu
Sat Sep 1 21:32:20 PDT 2012


Since you just implemented a new Stmt, could you take a look at
<http://clang.llvm.org/docs/InternalsManual.html#AddingExprStmt> and
make sure that it is accurate?

Thanks
--Sean Silva

On Sat, Sep 1, 2012 at 11:45 PM, Joao Matos <ripzonetriton at gmail.com> wrote:
> Author: triton
> Date: Sat Sep  1 22:45:41 2012
> New Revision: 163083
>
> URL: http://llvm.org/viewvc/llvm-project?rev=163083&view=rev
> Log:
> Implemented parsing and AST support for the MS __leave exception statement. Also a minor fix to __except printing in StmtPrinter.cpp. Thanks to Aaron Ballman for review.
>
> Modified:
>     cfe/trunk/include/clang/AST/RecursiveASTVisitor.h
>     cfe/trunk/include/clang/AST/Stmt.h
>     cfe/trunk/include/clang/Basic/DiagnosticParseKinds.td
>     cfe/trunk/include/clang/Basic/StmtNodes.td
>     cfe/trunk/include/clang/Sema/Scope.h
>     cfe/trunk/include/clang/Sema/Sema.h
>     cfe/trunk/include/clang/Serialization/ASTBitCodes.h
>     cfe/trunk/lib/AST/Stmt.cpp
>     cfe/trunk/lib/AST/StmtPrinter.cpp
>     cfe/trunk/lib/AST/StmtProfile.cpp
>     cfe/trunk/lib/CodeGen/CGStmt.cpp
>     cfe/trunk/lib/Parse/ParseStmt.cpp
>     cfe/trunk/lib/Sema/SemaStmt.cpp
>     cfe/trunk/lib/Sema/TreeTransform.h
>     cfe/trunk/lib/Serialization/ASTReaderStmt.cpp
>     cfe/trunk/lib/Serialization/ASTWriterStmt.cpp
>     cfe/trunk/lib/StaticAnalyzer/Core/ExprEngine.cpp
>     cfe/trunk/test/Parser/MicrosoftExtensions.c
>     cfe/trunk/tools/libclang/RecursiveASTVisitor.h
>
> Modified: cfe/trunk/include/clang/AST/RecursiveASTVisitor.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/RecursiveASTVisitor.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/AST/RecursiveASTVisitor.h (original)
> +++ cfe/trunk/include/clang/AST/RecursiveASTVisitor.h Sat Sep  1 22:45:41 2012
> @@ -2202,6 +2202,7 @@
>  })
>
>  DEF_TRAVERSE_STMT(SEHTryStmt, {})
> +DEF_TRAVERSE_STMT(SEHLeaveStmt, {})
>  DEF_TRAVERSE_STMT(SEHExceptStmt, {})
>  DEF_TRAVERSE_STMT(SEHFinallyStmt,{})
>
>
> Modified: cfe/trunk/include/clang/AST/Stmt.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Stmt.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/AST/Stmt.h (original)
> +++ cfe/trunk/include/clang/AST/Stmt.h Sat Sep  1 22:45:41 2012
> @@ -1889,6 +1889,34 @@
>    static bool classof(SEHTryStmt *) { return true; }
>  };
>
> +class SEHLeaveStmt : public Stmt {
> +  SourceLocation  LeaveLoc;
> +
> +  SEHLeaveStmt(SourceLocation LeaveLoc);
> +
> +  friend class ASTReader;
> +  friend class ASTStmtReader;
> +  explicit SEHLeaveStmt(EmptyShell E) : Stmt(SEHLeaveStmtClass, E) { }
> +
> +public:
> +  static SEHLeaveStmt* Create(ASTContext &C,
> +                              SourceLocation LeaveLoc);
> +
> +  SourceRange getSourceRange() const LLVM_READONLY {
> +    return SourceRange(getLeaveLoc());
> +  }
> +
> +  SourceLocation getLeaveLoc() const { return LeaveLoc; }
> +
> +  child_range children() { return child_range(); }
> +
> +  static bool classof(const Stmt *T) {
> +    return T->getStmtClass() == SEHLeaveStmtClass;
> +  }
> +
> +  static bool classof(SEHLeaveStmt *) { return true; }
> +};
> +
>  }  // end namespace clang
>
>  #endif
>
> Modified: cfe/trunk/include/clang/Basic/DiagnosticParseKinds.td
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticParseKinds.td?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/DiagnosticParseKinds.td (original)
> +++ cfe/trunk/include/clang/Basic/DiagnosticParseKinds.td Sat Sep  1 22:45:41 2012
> @@ -740,6 +740,9 @@
>
>  def err_seh___finally_block : Error<
>    "%0 only allowed in __finally block">;
> +
> +def err_seh___try_block : Error<
> +  "%0 only allowed in __try block">;
>
>  } // end of Parse Issue category.
>
>
> Modified: cfe/trunk/include/clang/Basic/StmtNodes.td
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/StmtNodes.td?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/StmtNodes.td (original)
> +++ cfe/trunk/include/clang/Basic/StmtNodes.td Sat Sep  1 22:45:41 2012
> @@ -164,6 +164,7 @@
>  // Microsoft Extensions.
>  def CXXUuidofExpr : DStmt<Expr>;
>  def SEHTryStmt : Stmt;
> +def SEHLeaveStmt : Stmt;
>  def SEHExceptStmt : Stmt;
>  def SEHFinallyStmt : Stmt;
>  def MSDependentExistsStmt : Stmt;
>
> Modified: cfe/trunk/include/clang/Sema/Scope.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Scope.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Sema/Scope.h (original)
> +++ cfe/trunk/include/clang/Sema/Scope.h Sat Sep  1 22:45:41 2012
> @@ -82,7 +82,10 @@
>      SwitchScope = 0x800,
>
>      /// TryScope - This is the scope of a C++ try statement.
> -    TryScope = 0x1000
> +    TryScope = 0x1000,
> +
> +    /// SEHTryScope - This is scope of a Microsoft SEH try statement.
> +    SEHTryScope = 0x2000
>    };
>  private:
>    /// The parent scope for this scope.  This is null for the translation-unit
> @@ -292,6 +295,9 @@
>    /// \brief Determine whether this scope is a C++ 'try' block.
>    bool isTryScope() const { return getFlags() & Scope::TryScope; }
>
> +  /// \brief Determine whether this scope is a MS SEH 'try' block.
> +  bool isSEHTryScope() const { return getFlags() & Scope::SEHTryScope; }
> +
>    /// containedInPrototypeScope - Return true if this or a parent scope
>    /// is a FunctionPrototypeScope.
>    bool containedInPrototypeScope() const;
>
> Modified: cfe/trunk/include/clang/Sema/Sema.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Sema/Sema.h (original)
> +++ cfe/trunk/include/clang/Sema/Sema.h Sat Sep  1 22:45:41 2012
> @@ -2622,6 +2622,8 @@
>                                Stmt *TryBlock,
>                                Stmt *Handler);
>
> +  StmtResult ActOnSEHLeaveStmt(SourceLocation LeaveLoc);
> +
>    StmtResult ActOnSEHExceptBlock(SourceLocation Loc,
>                                   Expr *FilterExpr,
>                                   Stmt *Block);
>
> Modified: cfe/trunk/include/clang/Serialization/ASTBitCodes.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Serialization/ASTBitCodes.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Serialization/ASTBitCodes.h (original)
> +++ cfe/trunk/include/clang/Serialization/ASTBitCodes.h Sat Sep  1 22:45:41 2012
> @@ -1204,6 +1204,7 @@
>        STMT_SEH_EXCEPT,            // SEHExceptStmt
>        STMT_SEH_FINALLY,           // SEHFinallyStmt
>        STMT_SEH_TRY,               // SEHTryStmt
> +      STMT_SEH_LEAVE,             // SEHLeaveStmt
>
>        // ARC
>        EXPR_OBJC_BRIDGED_CAST,     // ObjCBridgedCastExpr
>
> Modified: cfe/trunk/lib/AST/Stmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Stmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/Stmt.cpp (original)
> +++ cfe/trunk/lib/AST/Stmt.cpp Sat Sep  1 22:45:41 2012
> @@ -1006,6 +1006,17 @@
>    return dyn_cast<SEHFinallyStmt>(getHandler());
>  }
>
> +SEHLeaveStmt::SEHLeaveStmt(SourceLocation LeaveLoc)
> +  : Stmt(SEHLeaveStmtClass),
> +    LeaveLoc(LeaveLoc)
> +{
> +}
> +
> +SEHLeaveStmt* SEHLeaveStmt::Create(ASTContext &C,
> +                                   SourceLocation LeaveLoc) {
> +  return new(C) SEHLeaveStmt(LeaveLoc);
> +}
> +
>  SEHExceptStmt::SEHExceptStmt(SourceLocation Loc,
>                               Expr *FilterExpr,
>                               Stmt *Block)
>
> Modified: cfe/trunk/lib/AST/StmtPrinter.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/StmtPrinter.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/StmtPrinter.cpp (original)
> +++ cfe/trunk/lib/AST/StmtPrinter.cpp Sat Sep  1 22:45:41 2012
> @@ -537,6 +537,11 @@
>    OS << "\n";
>  }
>
> +void StmtPrinter::VisitSEHLeaveStmt(SEHLeaveStmt *Node) {
> +  Indent() << "__leave;";
> +  OS << "\n";
> +}
> +
>  void StmtPrinter::PrintRawSEHFinallyStmt(SEHFinallyStmt *Node) {
>    OS << "__finally ";
>    PrintRawCompoundStmt(Node->getBlock());
> @@ -546,7 +551,7 @@
>  void StmtPrinter::PrintRawSEHExceptHandler(SEHExceptStmt *Node) {
>    OS << "__except (";
>    VisitExpr(Node->getFilterExpr());
> -  OS << ")\n";
> +  OS << ") ";
>    PrintRawCompoundStmt(Node->getBlock());
>    OS << "\n";
>  }
>
> Modified: cfe/trunk/lib/AST/StmtProfile.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/StmtProfile.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/StmtProfile.cpp (original)
> +++ cfe/trunk/lib/AST/StmtProfile.cpp Sat Sep  1 22:45:41 2012
> @@ -215,6 +215,10 @@
>    VisitStmt(S);
>  }
>
> +void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
> +  VisitStmt(S);
> +}
> +
>  void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
>    VisitStmt(S);
>  }
>
> Modified: cfe/trunk/lib/CodeGen/CGStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGStmt.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGStmt.cpp Sat Sep  1 22:45:41 2012
> @@ -163,6 +163,7 @@
>    case Stmt::CXXForRangeStmtClass:
>      EmitCXXForRangeStmt(cast<CXXForRangeStmt>(*S));
>    case Stmt::SEHTryStmtClass:
> +  case Stmt::SEHLeaveStmtClass:
>      // FIXME Not yet implemented
>      break;
>    }
>
> Modified: cfe/trunk/lib/Parse/ParseStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Parse/ParseStmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Parse/ParseStmt.cpp (original)
> +++ cfe/trunk/lib/Parse/ParseStmt.cpp Sat Sep  1 22:45:41 2012
> @@ -183,6 +183,19 @@
>
>      return ParseExprStatement();
>    }
> +
> +  case tok::kw___leave: {
> +    Token LeaveTok = Tok;
> +    ConsumeToken();
> +    if (getCurScope()->isSEHTryScope()) {
> +      Res = Actions.ActOnSEHLeaveStmt(LeaveTok.getLocation());
> +    } else {
> +      Diag(LeaveTok, diag::err_seh___try_block)
> +         << LeaveTok.getIdentifierInfo()->getName();
> +      Res = StmtError();
> +    }
> +    break;
> +  }
>
>    case tok::kw_case:                // C99 6.8.1: labeled-statement
>      return ParseCaseStatement();
> @@ -322,7 +335,9 @@
>    if(Tok.isNot(tok::l_brace))
>      return StmtError(Diag(Tok,diag::err_expected_lbrace));
>
> -  StmtResult TryBlock(ParseCompoundStatement());
> +  // Use the SEHTryScope to handle __leave as a statement.
> +  unsigned ScopeFlags = Scope::DeclScope | Scope::SEHTryScope;
> +  StmtResult TryBlock(ParseCompoundStatement(false /*isStmtExpr*/, ScopeFlags));
>    if(TryBlock.isInvalid())
>      return TryBlock;
>
>
> Modified: cfe/trunk/lib/Sema/SemaStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaStmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Sema/SemaStmt.cpp (original)
> +++ cfe/trunk/lib/Sema/SemaStmt.cpp Sat Sep  1 22:45:41 2012
> @@ -2746,6 +2746,12 @@
>  }
>
>  StmtResult
> +Sema::ActOnSEHLeaveStmt(SourceLocation LeaveLoc)
> +{
> +  return Owned(SEHLeaveStmt::Create(Context, LeaveLoc));
> +}
> +
> +StmtResult
>  Sema::ActOnSEHExceptBlock(SourceLocation Loc,
>                            Expr *FilterExpr,
>                            Stmt *Block) {
>
> Modified: cfe/trunk/lib/Sema/TreeTransform.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/TreeTransform.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Sema/TreeTransform.h (original)
> +++ cfe/trunk/lib/Sema/TreeTransform.h Sat Sep  1 22:45:41 2012
> @@ -1361,6 +1361,10 @@
>      return getSema().ActOnSEHTryBlock(IsCXXTry,TryLoc,TryBlock,Handler);
>    }
>
> +  StmtResult RebuildSEHLeaveStmt(SourceLocation LeaveLoc) {
> +    return getSema().ActOnSEHLeaveStmt(LeaveLoc);
> +  }
> +
>    StmtResult RebuildSEHExceptStmt(SourceLocation Loc,
>                                    Expr *FilterExpr,
>                                    Stmt *Block) {
> @@ -6001,6 +6005,12 @@
>
>  template<typename Derived>
>  StmtResult
> +TreeTransform<Derived>::TransformSEHLeaveStmt(SEHLeaveStmt *S) {
> +  return getDerived().RebuildSEHLeaveStmt(S->getLeaveLoc());
> +}
> +
> +template<typename Derived>
> +StmtResult
>  TreeTransform<Derived>::TransformSEHFinallyStmt(SEHFinallyStmt *S) {
>    StmtResult Block; //  = getDerived().TransformCompoundStatement(S->getBlock());
>    if(Block.isInvalid()) return StmtError();
>
> Modified: cfe/trunk/lib/Serialization/ASTReaderStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTReaderStmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Serialization/ASTReaderStmt.cpp (original)
> +++ cfe/trunk/lib/Serialization/ASTReaderStmt.cpp Sat Sep  1 22:45:41 2012
> @@ -1516,6 +1516,11 @@
>    S->Children[SEHTryStmt::HANDLER] = Reader.ReadSubStmt();
>  }
>
> +void ASTStmtReader::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
> +  VisitStmt(S);
> +  S->LeaveLoc = ReadSourceLocation(Record, Idx);
> +}
> +
>  //===----------------------------------------------------------------------===//
>  // CUDA Expressions and Statements
>  //===----------------------------------------------------------------------===//
> @@ -1986,6 +1991,9 @@
>      case STMT_SEH_TRY:
>        S = new (Context) SEHTryStmt(Empty);
>        break;
> +    case STMT_SEH_LEAVE:
> +      S = new (Context) SEHLeaveStmt(Empty);
> +      break;
>      case STMT_CXX_CATCH:
>        S = new (Context) CXXCatchStmt(Empty);
>        break;
>
> Modified: cfe/trunk/lib/Serialization/ASTWriterStmt.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriterStmt.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Serialization/ASTWriterStmt.cpp (original)
> +++ cfe/trunk/lib/Serialization/ASTWriterStmt.cpp Sat Sep  1 22:45:41 2012
> @@ -1554,6 +1554,12 @@
>    Code = serialization::STMT_SEH_TRY;
>  }
>
> +void ASTStmtWriter::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
> +  VisitStmt(S);
> +  Writer.AddSourceLocation(S->getLeaveLoc(), Record);
> +  Code = serialization::STMT_SEH_LEAVE;
> +}
> +
>  //===----------------------------------------------------------------------===//
>  // ASTWriter Implementation
>  //===----------------------------------------------------------------------===//
>
> Modified: cfe/trunk/lib/StaticAnalyzer/Core/ExprEngine.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/ExprEngine.cpp?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/lib/StaticAnalyzer/Core/ExprEngine.cpp (original)
> +++ cfe/trunk/lib/StaticAnalyzer/Core/ExprEngine.cpp Sat Sep  1 22:45:41 2012
> @@ -527,6 +527,7 @@
>      case Stmt::PackExpansionExprClass:
>      case Stmt::SubstNonTypeTemplateParmPackExprClass:
>      case Stmt::SEHTryStmtClass:
> +    case Stmt::SEHLeaveStmtClass:
>      case Stmt::SEHExceptStmtClass:
>      case Stmt::LambdaExprClass:
>      case Stmt::SEHFinallyStmtClass: {
>
> Modified: cfe/trunk/test/Parser/MicrosoftExtensions.c
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Parser/MicrosoftExtensions.c?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/test/Parser/MicrosoftExtensions.c (original)
> +++ cfe/trunk/test/Parser/MicrosoftExtensions.c Sat Sep  1 22:45:41 2012
> @@ -102,3 +102,9 @@
>    struct S7 s;
>    int i = s.t; /* expected-warning {{'t' is deprecated}} */
>  }
> +
> +void SEH() {
> +  __try { __leave; } __except (0) {}
> +  __try { } __except (0) { __leave; } // expected-error {{__leave only allowed in __try block}}
> +  __try { } __finally { __leave; } // expected-error {{__leave only allowed in __try block}}
> +}
> \ No newline at end of file
>
> Modified: cfe/trunk/tools/libclang/RecursiveASTVisitor.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/libclang/RecursiveASTVisitor.h?rev=163083&r1=163082&r2=163083&view=diff
> ==============================================================================
> --- cfe/trunk/tools/libclang/RecursiveASTVisitor.h (original)
> +++ cfe/trunk/tools/libclang/RecursiveASTVisitor.h Sat Sep  1 22:45:41 2012
> @@ -2122,6 +2122,7 @@
>  })
>
>  DEF_TRAVERSE_STMT(SEHTryStmt, {})
> +DEF_TRAVERSE_STMT(SEHLeaveStmt, {})
>  DEF_TRAVERSE_STMT(SEHExceptStmt, {})
>  DEF_TRAVERSE_STMT(SEHFinallyStmt,{})
>
>
>
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