llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-clang Author: Vlad Serebrennikov (Endilll) <details> <summary>Changes</summary> This patch makes `TagUseKind` a scoped enumeration, and moves it outside of `Sema` class, making it eligible for forward declaring. --- Patch is 55.02 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/92689.diff 7 Files Affected: - (modified) clang/include/clang/Parse/Parser.h (+1-1) - (modified) clang/include/clang/Sema/Sema.h (+7-7) - (modified) clang/lib/Parse/ParseDecl.cpp (+16-17) - (modified) clang/lib/Parse/ParseDeclCXX.cpp (+25-25) - (modified) clang/lib/Sema/SemaDecl.cpp (+48-43) - (modified) clang/lib/Sema/SemaDeclCXX.cpp (+7-6) - (modified) clang/lib/Sema/SemaTemplate.cpp (+56-51) ``````````diff diff --git a/clang/include/clang/Parse/Parser.h b/clang/include/clang/Parse/Parser.h index af50164a8f93f..690b1ef66af9f 100644 --- a/clang/include/clang/Parse/Parser.h +++ b/clang/include/clang/Parse/Parser.h @@ -2814,7 +2814,7 @@ class Parser : public CodeCompletionHandler { SourceLocation CorrectLocation); void stripTypeAttributesOffDeclSpec(ParsedAttributes &Attrs, DeclSpec &DS, - Sema::TagUseKind TUK); + TagUseKind TUK); // FixItLoc = possible correct location for the attributes void ProhibitAttributes(ParsedAttributes &Attrs, diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h index d4d4a82525a02..071c0f8d9c406 100644 --- a/clang/include/clang/Sema/Sema.h +++ b/clang/include/clang/Sema/Sema.h @@ -445,6 +445,13 @@ enum class CheckedConversionKind { ForBuiltinOverloadedOp }; +enum class TagUseKind { + Reference, // Reference to a tag: 'struct foo *X;' + Declaration, // Fwd decl of a tag: 'struct foo;' + Definition, // Definition of a tag: 'struct foo { int X; } Y;' + Friend // Friend declaration: 'friend struct foo;' +}; + /// Sema - This implements semantic analysis and AST building for C. /// \nosubgrouping class Sema final : public SemaBase { @@ -3161,13 +3168,6 @@ class Sema final : public SemaBase { bool isDefinition, SourceLocation NewTagLoc, const IdentifierInfo *Name); - enum TagUseKind { - TUK_Reference, // Reference to a tag: 'struct foo *X;' - TUK_Declaration, // Fwd decl of a tag: 'struct foo;' - TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' - TUK_Friend // Friend declaration: 'friend struct foo;' - }; - enum OffsetOfKind { // Not parsing a type within __builtin_offsetof. OOK_Outside, diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp index 8405b44685ae4..5873a2633fc80 100644 --- a/clang/lib/Parse/ParseDecl.cpp +++ b/clang/lib/Parse/ParseDecl.cpp @@ -1905,9 +1905,8 @@ void Parser::DiagnoseCXX11AttributeExtension(ParsedAttributes &Attrs) { // variable. // This function moves attributes that should apply to the type off DS to Attrs. void Parser::stripTypeAttributesOffDeclSpec(ParsedAttributes &Attrs, - DeclSpec &DS, - Sema::TagUseKind TUK) { - if (TUK == Sema::TUK_Reference) + DeclSpec &DS, TagUseKind TUK) { + if (TUK == TagUseKind::Reference) return; llvm::SmallVector<ParsedAttr *, 1> ToBeMoved; @@ -5359,9 +5358,9 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, // enum foo {..}; void bar() { enum foo; } <- new foo in bar. // enum foo {..}; void bar() { enum foo x; } <- use of old foo. // - Sema::TagUseKind TUK; + TagUseKind TUK; if (AllowEnumSpecifier == AllowDefiningTypeSpec::No) - TUK = Sema::TUK_Reference; + TUK = TagUseKind::Reference; else if (Tok.is(tok::l_brace)) { if (DS.isFriendSpecified()) { Diag(Tok.getLocation(), diag::err_friend_decl_defines_type) @@ -5373,9 +5372,9 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, ScopedEnumKWLoc = SourceLocation(); IsScopedUsingClassTag = false; BaseType = TypeResult(); - TUK = Sema::TUK_Friend; + TUK = TagUseKind::Friend; } else { - TUK = Sema::TUK_Definition; + TUK = TagUseKind::Definition; } } else if (!isTypeSpecifier(DSC) && (Tok.is(tok::semi) || @@ -5384,7 +5383,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, // An opaque-enum-declaration is required to be standalone (no preceding or // following tokens in the declaration). Sema enforces this separately by // diagnosing anything else in the DeclSpec. - TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration; + TUK = DS.isFriendSpecified() ? TagUseKind::Friend : TagUseKind::Declaration; if (Tok.isNot(tok::semi)) { // A semicolon was missing after this declaration. Diagnose and recover. ExpectAndConsume(tok::semi, diag::err_expected_after, "enum"); @@ -5392,21 +5391,21 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, Tok.setKind(tok::semi); } } else { - TUK = Sema::TUK_Reference; + TUK = TagUseKind::Reference; } bool IsElaboratedTypeSpecifier = - TUK == Sema::TUK_Reference || TUK == Sema::TUK_Friend; + TUK == TagUseKind::Reference || TUK == TagUseKind::Friend; // If this is an elaborated type specifier nested in a larger declaration, // and we delayed diagnostics before, just merge them into the current pool. - if (TUK == Sema::TUK_Reference && shouldDelayDiagsInTag) { + if (TUK == TagUseKind::Reference && shouldDelayDiagsInTag) { diagsFromTag.redelay(); } MultiTemplateParamsArg TParams; if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate && - TUK != Sema::TUK_Reference) { + TUK != TagUseKind::Reference) { if (!getLangOpts().CPlusPlus11 || !SS.isSet()) { // Skip the rest of this declarator, up until the comma or semicolon. Diag(Tok, diag::err_enum_template); @@ -5427,7 +5426,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, SS.setTemplateParamLists(TParams); } - if (!Name && TUK != Sema::TUK_Definition) { + if (!Name && TUK != TagUseKind::Definition) { Diag(Tok, diag::err_enumerator_unnamed_no_def); DS.SetTypeSpecError(); @@ -5460,7 +5459,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, stripTypeAttributesOffDeclSpec(attrs, DS, TUK); SkipBodyInfo SkipBody; - if (!Name && TUK == Sema::TUK_Definition && Tok.is(tok::l_brace) && + if (!Name && TUK == TagUseKind::Definition && Tok.is(tok::l_brace) && NextToken().is(tok::identifier)) SkipBody = Actions.shouldSkipAnonEnumBody(getCurScope(), NextToken().getIdentifierInfo(), @@ -5481,7 +5480,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, OffsetOfState, &SkipBody).get(); if (SkipBody.ShouldSkip) { - assert(TUK == Sema::TUK_Definition && "can only skip a definition"); + assert(TUK == TagUseKind::Definition && "can only skip a definition"); BalancedDelimiterTracker T(*this, tok::l_brace); T.consumeOpen(); @@ -5523,7 +5522,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, if (!TagDecl) { // The action failed to produce an enumeration tag. If this is a // definition, consume the entire definition. - if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) { + if (Tok.is(tok::l_brace) && TUK != TagUseKind::Reference) { ConsumeBrace(); SkipUntil(tok::r_brace, StopAtSemi); } @@ -5532,7 +5531,7 @@ void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS, return; } - if (Tok.is(tok::l_brace) && TUK == Sema::TUK_Definition) { + if (Tok.is(tok::l_brace) && TUK == TagUseKind::Definition) { Decl *D = SkipBody.CheckSameAsPrevious ? SkipBody.New : TagDecl; ParseEnumBody(StartLoc, D); if (SkipBody.CheckSameAsPrevious && diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp index 5eaec2b621e6f..805651e4ab069 100644 --- a/clang/lib/Parse/ParseDeclCXX.cpp +++ b/clang/lib/Parse/ParseDeclCXX.cpp @@ -1961,11 +1961,11 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, MaybeParseCXX11Attributes(Attributes); const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy(); - Sema::TagUseKind TUK; + TagUseKind TUK; if (isDefiningTypeSpecifierContext(DSC, getLangOpts().CPlusPlus) == AllowDefiningTypeSpec::No || (getLangOpts().OpenMP && OpenMPDirectiveParsing)) - TUK = Sema::TUK_Reference; + TUK = TagUseKind::Reference; else if (Tok.is(tok::l_brace) || (DSC != DeclSpecContext::DSC_association && getLangOpts().CPlusPlus && Tok.is(tok::colon)) || @@ -1980,10 +1980,10 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // Skip everything up to the semicolon, so that this looks like a proper // friend class (or template thereof) declaration. SkipUntil(tok::semi, StopBeforeMatch); - TUK = Sema::TUK_Friend; + TUK = TagUseKind::Friend; } else { // Okay, this is a class definition. - TUK = Sema::TUK_Definition; + TUK = TagUseKind::Definition; } } else if (isClassCompatibleKeyword() && (NextToken().is(tok::l_square) || @@ -2024,15 +2024,15 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, } if (Tok.isOneOf(tok::l_brace, tok::colon)) - TUK = Sema::TUK_Definition; + TUK = TagUseKind::Definition; else - TUK = Sema::TUK_Reference; + TUK = TagUseKind::Reference; PA.Revert(); } else if (!isTypeSpecifier(DSC) && (Tok.is(tok::semi) || (Tok.isAtStartOfLine() && !isValidAfterTypeSpecifier(false)))) { - TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration; + TUK = DS.isFriendSpecified() ? TagUseKind::Friend : TagUseKind::Declaration; if (Tok.isNot(tok::semi)) { const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy(); // A semicolon was missing after this declaration. Diagnose and recover. @@ -2042,11 +2042,11 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, Tok.setKind(tok::semi); } } else - TUK = Sema::TUK_Reference; + TUK = TagUseKind::Reference; // Forbid misplaced attributes. In cases of a reference, we pass attributes // to caller to handle. - if (TUK != Sema::TUK_Reference) { + if (TUK != TagUseKind::Reference) { // If this is not a reference, then the only possible // valid place for C++11 attributes to appear here // is between class-key and class-name. If there are @@ -2072,7 +2072,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, if (!Name && !TemplateId && (DS.getTypeSpecType() == DeclSpec::TST_error || - TUK != Sema::TUK_Definition)) { + TUK != TagUseKind::Definition)) { if (DS.getTypeSpecType() != DeclSpec::TST_error) { // We have a declaration or reference to an anonymous class. Diag(StartLoc, diag::err_anon_type_definition) @@ -2082,7 +2082,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // If we are parsing a definition and stop at a base-clause, continue on // until the semicolon. Continuing from the comma will just trick us into // thinking we are seeing a variable declaration. - if (TUK == Sema::TUK_Definition && Tok.is(tok::colon)) + if (TUK == TagUseKind::Definition && Tok.is(tok::colon)) SkipUntil(tok::semi, StopBeforeMatch); else SkipUntil(tok::comma, StopAtSemi); @@ -2103,7 +2103,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, if (TemplateId->isInvalid()) { // Can't build the declaration. } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation && - TUK == Sema::TUK_Declaration) { + TUK == TagUseKind::Declaration) { // This is an explicit instantiation of a class template. ProhibitCXX11Attributes(attrs, diag::err_attributes_not_allowed, diag::err_keyword_not_allowed, @@ -2119,8 +2119,8 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // they have template headers, in which case they're ill-formed // (FIXME: "template <class T> friend class A<T>::B<int>;"). // We diagnose this error in ActOnClassTemplateSpecialization. - } else if (TUK == Sema::TUK_Reference || - (TUK == Sema::TUK_Friend && + } else if (TUK == TagUseKind::Reference || + (TUK == TagUseKind::Friend && TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate)) { ProhibitCXX11Attributes(attrs, diag::err_attributes_not_allowed, diag::err_keyword_not_allowed, @@ -2145,10 +2145,10 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // It this is friend declaration however, since it cannot have a // template header, it is most likely that the user meant to // remove the 'template' keyword. - assert((TUK == Sema::TUK_Definition || TUK == Sema::TUK_Friend) && + assert((TUK == TagUseKind::Definition || TUK == TagUseKind::Friend) && "Expected a definition here"); - if (TUK == Sema::TUK_Friend) { + if (TUK == TagUseKind::Friend) { Diag(DS.getFriendSpecLoc(), diag::err_friend_explicit_instantiation); TemplateParams = nullptr; } else { @@ -2179,7 +2179,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, &SkipBody); } } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation && - TUK == Sema::TUK_Declaration) { + TUK == TagUseKind::Declaration) { // Explicit instantiation of a member of a class template // specialization, e.g., // @@ -2190,7 +2190,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, TagOrTempResult = Actions.ActOnExplicitInstantiation( getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc, TagType, StartLoc, SS, Name, NameLoc, attrs); - } else if (TUK == Sema::TUK_Friend && + } else if (TUK == TagUseKind::Friend && TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) { ProhibitCXX11Attributes(attrs, diag::err_attributes_not_allowed, diag::err_keyword_not_allowed, @@ -2202,12 +2202,12 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, MultiTemplateParamsArg(TemplateParams ? &(*TemplateParams)[0] : nullptr, TemplateParams ? TemplateParams->size() : 0)); } else { - if (TUK != Sema::TUK_Declaration && TUK != Sema::TUK_Definition) + if (TUK != TagUseKind::Declaration && TUK != TagUseKind::Definition) ProhibitCXX11Attributes(attrs, diag::err_attributes_not_allowed, diag::err_keyword_not_allowed, /* DiagnoseEmptyAttrs=*/true); - if (TUK == Sema::TUK_Definition && + if (TUK == TagUseKind::Definition && TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) { // If the declarator-id is not a template-id, issue a diagnostic and // recover by ignoring the 'template' keyword. @@ -2222,7 +2222,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // reference. For example, we don't need the template parameters here: // template <class T> class A *makeA(T t); MultiTemplateParamsArg TParams; - if (TUK != Sema::TUK_Reference && TemplateParams) + if (TUK != TagUseKind::Reference && TemplateParams) TParams = MultiTemplateParamsArg(&(*TemplateParams)[0], TemplateParams->size()); @@ -2241,7 +2241,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // If ActOnTag said the type was dependent, try again with the // less common call. if (IsDependent) { - assert(TUK == Sema::TUK_Reference || TUK == Sema::TUK_Friend); + assert(TUK == TagUseKind::Reference || TUK == TagUseKind::Friend); TypeResult = Actions.ActOnDependentTag(getCurScope(), TagType, TUK, SS, Name, StartLoc, NameLoc); } @@ -2252,13 +2252,13 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // just merge them into the current pool. if (shouldDelayDiagsInTag) { diagsFromTag.done(); - if (TUK == Sema::TUK_Reference && + if (TUK == TagUseKind::Reference && TemplateInfo.Kind == ParsedTemplateInfo::Template) diagsFromTag.redelay(); } // If there is a body, parse it and inform the actions module. - if (TUK == Sema::TUK_Definition) { + if (TUK == TagUseKind::Definition) { assert(Tok.is(tok::l_brace) || (getLangOpts().CPlusPlus && Tok.is(tok::colon)) || isClassCompatibleKeyword()); @@ -2316,7 +2316,7 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind, // // After a type-specifier, we don't expect a semicolon. This only happens in // C, since definitions are not permitted in this context in C++. - if (TUK == Sema::TUK_Definition && + if (TUK == TagUseKind::Definition && (getLangOpts().CPlusPlus || !isTypeSpecifier(DSC)) && (TemplateInfo.Kind || !isValidAfterTypeSpecifier(false))) { if (Tok.isNot(tok::semi)) { diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp index f2b9202255cd4..b74cf189d88aa 100644 --- a/clang/lib/Sema/SemaDecl.cpp +++ b/clang/lib/Sema/SemaDecl.cpp @@ -4985,7 +4985,7 @@ void Sema::setTagNameForLinkagePurposes(TagDecl *TagFromDeclSpec, if (TagFromDeclSpec->hasNameForLinkage()) return; - // A well-formed anonymous tag must always be a TUK_Definition. + // A well-formed anonymous tag must always be a TagUseKind::Definition. assert(TagFromDeclSpec->isThisDeclarationADefinition()); // The type must match the tag exactly; no qualifiers allowed. @@ -17237,9 +17237,9 @@ Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, OffsetOfKind OOK, SkipBodyInfo *SkipBody) { // If this is not a definition, it must have a name. IdentifierInfo *OrigName = Name; - assert((Name != nullptr || TUK == TUK_Definition) && + assert((Name != nullptr || TUK == TagUseKind::Definition) && "Nameless record must be a definition!"); - assert(TemplateParameterLists.size() == 0 || TUK != TUK_Reference); + assert(TemplateParameterLists.size() == 0 || TUK != TagUseKind::Reference); OwnedDecl = false; TagTypeKind Kind = TypeWithKeyword::getTagTypeKindForTypeSpec(TagSpec); @@ -17253,11 +17253,11 @@ Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, // or a scope specifier, which also conveniently avoids this work // for non-C++ cases. if (TemplateParameterLists.size() > 0 || - (SS.isNotEmpty() && TUK != TUK_Reference)) { + (SS.isNotEmpty() && TUK != TagUseKind::Reference)) { TemplateParameterList *TemplateParams = MatchTemplateParametersToScopeSpecifier( KWLoc, NameLoc, SS, nullptr, TemplateParameterLists, - TUK == TUK_Friend, isMemberSpecialization, Invalid); + TUK == TagUseKind::Friend, isMemberSpecialization, Invalid); // C++23 [dcl.type.elab] p2: // If an elaborated-type-specifier is the sole constituent of a @@ -17272,7 +17272,8 @@ Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, // FIXME: Class template partial specializations can be forward declared // per CWG2213, but the resolution failed to allow qualified forward // declarations. This is almost certainly unintentional, so we allow them. - if (TUK == TUK_Declaration && SS.isNotEmpty() && !isMemberSpecialization) + if (TUK == TagUseKind::Declaration && SS.isNotEmpty() && + !isMemberSpecialization) Diag(SS.getBeginLoc(), diag::err_standalone_class_nested_name_specifier) << TypeWithKeyword::getTagTypeKindName(Kind) << SS.getRange(); @@ -17309,7 +17310,7 @@ Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, return true; } - if (TUK == TUK_Friend && Kind == TagTypeKind::Enum) { + if (TUK == TagUseKind::Friend && Kind == TagTypeKind::Enum) { // C++23 [dcl.type.elab]p4: // If an elaborated-type-specifier appears with the friend specifier as // an entire member-declaration, the member-declaration shall have one @@ -17360,7 +17361,7 @@ Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, // of 'int'. However, if this is an unfixed forward declaration, don't set // the underlying type unless the user enables -fms-compatibility. This // makes unfixed forward declared enums incomplet... [truncated] `````````` </details> https://github.com/llvm/llvm-project/pull/92689 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
