split decl writing out to its own PCHWriterDecl.cpp file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70193 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 445 deletions

diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 408fa60d70..d233cfb441 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -17,7 +17,6 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/Decl.h"
 #include "clang/AST/DeclContextInternals.h"
-#include "clang/AST/DeclVisitor.h"
 #include "clang/AST/Expr.h"
 #include "clang/AST/StmtVisitor.h"
 #include "clang/AST/Type.h"
@@ -40,6 +39,7 @@ using namespace clang;
 //===----------------------------------------------------------------------===//
 // Type serialization
 //===----------------------------------------------------------------------===//
+
 namespace {
   class VISIBILITY_HIDDEN PCHTypeWriter {
     PCHWriter &Writer;
@@ -229,378 +229,6 @@ void PCHTypeWriter::VisitObjCQualifiedIdType(const ObjCQualifiedIdType *T) {
   Code = pch::TYPE_OBJC_QUALIFIED_ID;
 }
 
-//===----------------------------------------------------------------------===//
-// Declaration serialization
-//===----------------------------------------------------------------------===//
-namespace {
-  class VISIBILITY_HIDDEN PCHDeclWriter
-    : public DeclVisitor<PCHDeclWriter, void> {
-
-    PCHWriter &Writer;
-    ASTContext &Context;
-    PCHWriter::RecordData &Record;
-
-  public:
-    pch::DeclCode Code;
-
-    PCHDeclWriter(PCHWriter &Writer, ASTContext &Context, 
-                  PCHWriter::RecordData &Record) 
-      : Writer(Writer), Context(Context), Record(Record) { }
-
-    void VisitDecl(Decl *D);
-    void VisitTranslationUnitDecl(TranslationUnitDecl *D);
-    void VisitNamedDecl(NamedDecl *D);
-    void VisitTypeDecl(TypeDecl *D);
-    void VisitTypedefDecl(TypedefDecl *D);
-    void VisitTagDecl(TagDecl *D);
-    void VisitEnumDecl(EnumDecl *D);
-    void VisitRecordDecl(RecordDecl *D);
-    void VisitValueDecl(ValueDecl *D);
-    void VisitEnumConstantDecl(EnumConstantDecl *D);
-    void VisitFunctionDecl(FunctionDecl *D);
-    void VisitFieldDecl(FieldDecl *D);
-    void VisitVarDecl(VarDecl *D);
-    void VisitImplicitParamDecl(ImplicitParamDecl *D);
-    void VisitParmVarDecl(ParmVarDecl *D);
-    void VisitOriginalParmVarDecl(OriginalParmVarDecl *D);
-    void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
-    void VisitBlockDecl(BlockDecl *D);
-    void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 
-                          uint64_t VisibleOffset);
-    void VisitObjCMethodDecl(ObjCMethodDecl *D);
-    void VisitObjCContainerDecl(ObjCContainerDecl *D);
-    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
-    void VisitObjCIvarDecl(ObjCIvarDecl *D);
-    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
-    void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
-    void VisitObjCClassDecl(ObjCClassDecl *D);
-    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
-    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
-    void VisitObjCImplDecl(ObjCImplDecl *D);
-    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
-    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
-    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
-    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
-    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
-  };
-}
-
-void PCHDeclWriter::VisitDecl(Decl *D) {
-  Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record);
-  Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record);
-  Writer.AddSourceLocation(D->getLocation(), Record);
-  Record.push_back(D->isInvalidDecl());
-  Record.push_back(D->hasAttrs());
-  Record.push_back(D->isImplicit());
-  Record.push_back(D->getAccess());
-}
-
-void PCHDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
-  VisitDecl(D);
-  Code = pch::DECL_TRANSLATION_UNIT;
-}
-
-void PCHDeclWriter::VisitNamedDecl(NamedDecl *D) {
-  VisitDecl(D);
-  Writer.AddDeclarationName(D->getDeclName(), Record);
-}
-
-void PCHDeclWriter::VisitTypeDecl(TypeDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
-}
-
-void PCHDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
-  VisitTypeDecl(D);
-  Writer.AddTypeRef(D->getUnderlyingType(), Record);
-  Code = pch::DECL_TYPEDEF;
-}
-
-void PCHDeclWriter::VisitTagDecl(TagDecl *D) {
-  VisitTypeDecl(D);
-  Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
-  Record.push_back(D->isDefinition());
-  Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record);
-}
-
-void PCHDeclWriter::VisitEnumDecl(EnumDecl *D) {
-  VisitTagDecl(D);
-  Writer.AddTypeRef(D->getIntegerType(), Record);
-  Code = pch::DECL_ENUM;
-}
-
-void PCHDeclWriter::VisitRecordDecl(RecordDecl *D) {
-  VisitTagDecl(D);
-  Record.push_back(D->hasFlexibleArrayMember());
-  Record.push_back(D->isAnonymousStructOrUnion());
-  Code = pch::DECL_RECORD;
-}
-
-void PCHDeclWriter::VisitValueDecl(ValueDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddTypeRef(D->getType(), Record);
-}
-
-void PCHDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
-  VisitValueDecl(D);
-  Record.push_back(D->getInitExpr()? 1 : 0);
-  if (D->getInitExpr())
-    Writer.AddStmt(D->getInitExpr());
-  Writer.AddAPSInt(D->getInitVal(), Record);
-  Code = pch::DECL_ENUM_CONSTANT;
-}
-
-void PCHDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
-  VisitValueDecl(D);
-  Record.push_back(D->isThisDeclarationADefinition());
-  if (D->isThisDeclarationADefinition())
-    Writer.AddStmt(D->getBody(Context));
-  Writer.AddDeclRef(D->getPreviousDeclaration(), Record);
-  Record.push_back(D->getStorageClass()); // FIXME: stable encoding
-  Record.push_back(D->isInline());
-  Record.push_back(D->isC99InlineDefinition());
-  Record.push_back(D->isVirtual());
-  Record.push_back(D->isPure());
-  Record.push_back(D->inheritedPrototype());
-  Record.push_back(D->hasPrototype() && !D->inheritedPrototype());
-  Record.push_back(D->isDeleted());
-  Writer.AddSourceLocation(D->getTypeSpecStartLoc(), Record);
-  Record.push_back(D->param_size());
-  for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
-       P != PEnd; ++P)
-    Writer.AddDeclRef(*P, Record);
-  Code = pch::DECL_FUNCTION;
-}
-
-void PCHDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
-  VisitNamedDecl(D);
-  // FIXME: convert to LazyStmtPtr?
-  // Unlike C/C++, method bodies will never be in header files. 
-  Record.push_back(D->getBody() != 0);
-  if (D->getBody() != 0) {
-    Writer.AddStmt(D->getBody(Context));
-    Writer.AddDeclRef(D->getSelfDecl(), Record);
-    Writer.AddDeclRef(D->getCmdDecl(), Record);
-  }
-  Record.push_back(D->isInstanceMethod());
-  Record.push_back(D->isVariadic());
-  Record.push_back(D->isSynthesized());
-  // FIXME: stable encoding for @required/@optional
-  Record.push_back(D->getImplementationControl()); 
-  // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway
-  Record.push_back(D->getObjCDeclQualifier()); 
-  Writer.AddTypeRef(D->getResultType(), Record);
-  Writer.AddSourceLocation(D->getLocEnd(), Record);
-  Record.push_back(D->param_size());
-  for (ObjCMethodDecl::param_iterator P = D->param_begin(), 
-                                   PEnd = D->param_end(); P != PEnd; ++P)
-    Writer.AddDeclRef(*P, Record);
-  Code = pch::DECL_OBJC_METHOD;
-}
-
-void PCHDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddSourceLocation(D->getAtEndLoc(), Record);
-  // Abstract class (no need to define a stable pch::DECL code).
-}
-
-void PCHDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
-  VisitObjCContainerDecl(D);
-  Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
-  Writer.AddDeclRef(D->getSuperClass(), Record);
-  Record.push_back(D->protocol_size());
-  for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 
-         PEnd = D->protocol_end();
-       P != PEnd; ++P)
-    Writer.AddDeclRef(*P, Record);
-  Record.push_back(D->ivar_size());
-  for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), 
-                                     IEnd = D->ivar_end(); I != IEnd; ++I)
-    Writer.AddDeclRef(*I, Record);
-  Writer.AddDeclRef(D->getCategoryList(), Record);
-  Record.push_back(D->isForwardDecl());
-  Record.push_back(D->isImplicitInterfaceDecl());
-  Writer.AddSourceLocation(D->getClassLoc(), Record);
-  Writer.AddSourceLocation(D->getSuperClassLoc(), Record);
-  Writer.AddSourceLocation(D->getLocEnd(), Record);
-  Code = pch::DECL_OBJC_INTERFACE;
-}
-
-void PCHDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
-  VisitFieldDecl(D);
-  // FIXME: stable encoding for @public/@private/@protected/@package
-  Record.push_back(D->getAccessControl()); 
-  Code = pch::DECL_OBJC_IVAR;
-}
-
-void PCHDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
-  VisitObjCContainerDecl(D);
-  Record.push_back(D->isForwardDecl());
-  Writer.AddSourceLocation(D->getLocEnd(), Record);
-  Record.push_back(D->protocol_size());
-  for (ObjCProtocolDecl::protocol_iterator 
-       I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
-    Writer.AddDeclRef(*I, Record);
-  Code = pch::DECL_OBJC_PROTOCOL;
-}
-
-void PCHDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
-  VisitFieldDecl(D);
-  Code = pch::DECL_OBJC_AT_DEFS_FIELD;
-}
-
-void PCHDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) {
-  VisitDecl(D);
-  Record.push_back(D->size());
-  for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I)
-    Writer.AddDeclRef(*I, Record);
-  Code = pch::DECL_OBJC_CLASS;
-}
-
-void PCHDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
-  VisitDecl(D);
-  Record.push_back(D->protocol_size());
-  for (ObjCProtocolDecl::protocol_iterator 
-       I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
-    Writer.AddDeclRef(*I, Record);
-  Code = pch::DECL_OBJC_FORWARD_PROTOCOL;
-}
-
-void PCHDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
-  VisitObjCContainerDecl(D);
-  Writer.AddDeclRef(D->getClassInterface(), Record);
-  Record.push_back(D->protocol_size());
-  for (ObjCProtocolDecl::protocol_iterator 
-       I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
-    Writer.AddDeclRef(*I, Record);
-  Writer.AddDeclRef(D->getNextClassCategory(), Record);
-  Writer.AddSourceLocation(D->getLocEnd(), Record);
-  Code = pch::DECL_OBJC_CATEGORY;
-}
-
-void PCHDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddDeclRef(D->getClassInterface(), Record);
-  Code = pch::DECL_OBJC_COMPATIBLE_ALIAS;
-}
-
-void PCHDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddTypeRef(D->getType(), Record);
-  // FIXME: stable encoding
-  Record.push_back((unsigned)D->getPropertyAttributes());
-  // FIXME: stable encoding
-  Record.push_back((unsigned)D->getPropertyImplementation());
-  Writer.AddDeclarationName(D->getGetterName(), Record);
-  Writer.AddDeclarationName(D->getSetterName(), Record);
-  Writer.AddDeclRef(D->getGetterMethodDecl(), Record);
-  Writer.AddDeclRef(D->getSetterMethodDecl(), Record);
-  Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
-  Code = pch::DECL_OBJC_PROPERTY;
-}
-
-void PCHDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
-  VisitNamedDecl(D);
-  Writer.AddDeclRef(D->getClassInterface(), Record);
-  Writer.AddSourceLocation(D->getLocEnd(), Record);
-  // Abstract class (no need to define a stable pch::DECL code).
-}
-
-void PCHDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
-  VisitObjCImplDecl(D);
-  Writer.AddIdentifierRef(D->getIdentifier(), Record);
-  Code = pch::DECL_OBJC_CATEGORY_IMPL;
-}
-
-void PCHDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
-  VisitObjCImplDecl(D);
-  Writer.AddDeclRef(D->getSuperClass(), Record);
-  Code = pch::DECL_OBJC_IMPLEMENTATION;
-}
-
-void PCHDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
-  VisitDecl(D);
-  Writer.AddSourceLocation(D->getLocStart(), Record);
-  Writer.AddDeclRef(D->getPropertyDecl(), Record);
-  Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
-  Code = pch::DECL_OBJC_PROPERTY_IMPL;
-}
-
-void PCHDeclWriter::VisitFieldDecl(FieldDecl *D) {
-  VisitValueDecl(D);
-  Record.push_back(D->isMutable());
-  Record.push_back(D->getBitWidth()? 1 : 0);
-  if (D->getBitWidth())
-    Writer.AddStmt(D->getBitWidth());
-  Code = pch::DECL_FIELD;
-}
-
-void PCHDeclWriter::VisitVarDecl(VarDecl *D) {
-  VisitValueDecl(D);
-  Record.push_back(D->getStorageClass()); // FIXME: stable encoding
-  Record.push_back(D->isThreadSpecified());
-  Record.push_back(D->hasCXXDirectInitializer());
-  Record.push_back(D->isDeclaredInCondition());
-  Writer.AddDeclRef(D->getPreviousDeclaration(), Record);
-  Writer.AddSourceLocation(D->getTypeSpecStartLoc(), Record);
-  Record.push_back(D->getInit()? 1 : 0);
-  if (D->getInit())
-    Writer.AddStmt(D->getInit());
-  Code = pch::DECL_VAR;
-}
-
-void PCHDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
-  VisitVarDecl(D);
-  Code = pch::DECL_IMPLICIT_PARAM;
-}
-
-void PCHDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
-  VisitVarDecl(D);
-  Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
-  // FIXME: emit default argument (C++)
-  // FIXME: why isn't the "default argument" just stored as the initializer
-  // in VarDecl?
-  Code = pch::DECL_PARM_VAR;
-}
-
-void PCHDeclWriter::VisitOriginalParmVarDecl(OriginalParmVarDecl *D) {
-  VisitParmVarDecl(D);
-  Writer.AddTypeRef(D->getOriginalType(), Record);
-  Code = pch::DECL_ORIGINAL_PARM_VAR;
-}
-
-void PCHDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
-  VisitDecl(D);
-  Writer.AddStmt(D->getAsmString());
-  Code = pch::DECL_FILE_SCOPE_ASM;
-}
-
-void PCHDeclWriter::VisitBlockDecl(BlockDecl *D) {
-  VisitDecl(D);
-  Writer.AddStmt(D->getBody());
-  Record.push_back(D->param_size());
-  for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
-       P != PEnd; ++P)
-    Writer.AddDeclRef(*P, Record);
-  Code = pch::DECL_BLOCK;
-}
-
-/// \brief Emit the DeclContext part of a declaration context decl.
-///
-/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL
-/// block for this declaration context is stored. May be 0 to indicate
-/// that there are no declarations stored within this context.
-///
-/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE
-/// block for this declaration context is stored. May be 0 to indicate
-/// that there are no declarations visible from this context. Note
-/// that this value will not be emitted for non-primary declaration
-/// contexts.
-void PCHDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 
-                                     uint64_t VisibleOffset) {
-  Record.push_back(LexicalOffset);
-  Record.push_back(VisibleOffset);
-}
 
 //===----------------------------------------------------------------------===//
 // Statement/expression serialization
@@ -2024,78 +1652,6 @@ uint64_t PCHWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
   return Offset;
 }
 
-/// \brief Write a block containing all of the declarations.
-void PCHWriter::WriteDeclsBlock(ASTContext &Context) {
-  // Enter the declarations block.
-  Stream.EnterSubblock(pch::DECLS_BLOCK_ID, 2);
-
-  // Emit all of the declarations.
-  RecordData Record;
-  PCHDeclWriter W(*this, Context, Record);
-  while (!DeclsToEmit.empty()) {
-    // Pull the next declaration off the queue
-    Decl *D = DeclsToEmit.front();
-    DeclsToEmit.pop();
-
-    // If this declaration is also a DeclContext, write blocks for the
-    // declarations that lexically stored inside its context and those
-    // declarations that are visible from its context. These blocks
-    // are written before the declaration itself so that we can put
-    // their offsets into the record for the declaration.
-    uint64_t LexicalOffset = 0;
-    uint64_t VisibleOffset = 0;
-    DeclContext *DC = dyn_cast<DeclContext>(D);
-    if (DC) {
-      LexicalOffset = WriteDeclContextLexicalBlock(Context, DC);
-      VisibleOffset = WriteDeclContextVisibleBlock(Context, DC);
-    }
-
-    // Determine the ID for this declaration
-    pch::DeclID ID = DeclIDs[D];
-    if (ID == 0)
-      ID = DeclIDs.size();
-
-    unsigned Index = ID - 1;
-
-    // Record the offset for this declaration
-    if (DeclOffsets.size() == Index)
-      DeclOffsets.push_back(Stream.GetCurrentBitNo());
-    else if (DeclOffsets.size() < Index) {
-      DeclOffsets.resize(Index+1);
-      DeclOffsets[Index] = Stream.GetCurrentBitNo();
-    }
-
-    // Build and emit a record for this declaration
-    Record.clear();
-    W.Code = (pch::DeclCode)0;
-    W.Visit(D);
-    if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset);
-
-    if (!W.Code) {
-      fprintf(stderr, "Cannot serialize declaration of kind %s\n",
-              D->getDeclKindName());
-      assert(false && "Unhandled declaration kind while generating PCH");
-      exit(-1);
-    }
-    Stream.EmitRecord(W.Code, Record);
-
-    // If the declaration had any attributes, write them now.
-    if (D->hasAttrs())
-      WriteAttributeRecord(D->getAttrs());
-
-    // Flush any expressions that were written as part of this declaration.
-    FlushStmts();
-    
-    // Note external declarations so that we can add them to a record
-    // in the PCH file later.
-    if (isa<FileScopeAsmDecl>(D))
-      ExternalDefinitions.push_back(ID);
-  }
-
-  // Exit the declarations block
-  Stream.ExitBlock();
-}
-
 namespace {
 // Trait used for the on-disk hash table used in the method pool.
 class VISIBILITY_HIDDEN PCHMethodPoolTrait {