Index: include/clang-c/Index.h =================================================================== --- include/clang-c/Index.h +++ include/clang-c/Index.h @@ -4113,7 +4113,6 @@ CXPrintingPolicy_Indentation, CXPrintingPolicy_SuppressSpecifiers, CXPrintingPolicy_SuppressTagKeyword, - CXPrintingPolicy_IncludeTagDefinition, CXPrintingPolicy_SuppressScope, CXPrintingPolicy_SuppressUnwrittenScope, CXPrintingPolicy_SuppressInitializers, Index: include/clang/AST/PrettyPrinter.h =================================================================== --- include/clang/AST/PrettyPrinter.h +++ include/clang/AST/PrettyPrinter.h @@ -39,8 +39,7 @@ /// \brief Create a default printing policy for the specified language. PrintingPolicy(const LangOptions &LO) : Indentation(2), SuppressSpecifiers(false), - SuppressTagKeyword(LO.CPlusPlus), - IncludeTagDefinition(false), SuppressScope(false), + SuppressTagKeyword(LO.CPlusPlus), SuppressScope(false), SuppressUnwrittenScope(false), SuppressInitializers(false), ConstantArraySizeAsWritten(false), AnonymousTagLocations(true), SuppressStrongLifetime(false), SuppressLifetimeQualifiers(false), @@ -52,7 +51,7 @@ Half(LO.Half), MSWChar(LO.MicrosoftExt && !LO.WChar), IncludeNewlines(true), MSVCFormatting(false), ConstantsAsWritten(false), SuppressImplicitBase(false), - FullyQualifiedName(false) { } + FullyQualifiedName(false), TagSpecifierAs(nullptr) { } /// Adjust this printing policy for cases where it's known that we're /// printing C++ code (for instance, if AST dumping reaches a C++-only @@ -93,16 +92,6 @@ /// \endcode bool SuppressTagKeyword : 1; - /// When true, include the body of a tag definition. - /// - /// This is used to place the definition of a struct - /// in the middle of another declaration as with: - /// - /// \code - /// typedef struct { int x, y; } Point; - /// \endcode - bool IncludeTagDefinition : 1; - /// Suppresses printing of scope specifiers. bool SuppressScope : 1; @@ -225,6 +214,31 @@ /// When true, print the fully qualified name of function declarations. /// This is the opposite of SuppressScope and thus overrules it. bool FullyQualifiedName : 1; + + /// When not nullptr, print the tag specifier in the immediate specifier list + /// using this tag declaration, but do not do so again for nested + /// occurrences. + /// + /// \c TagSpecifierAs is designed specifically to be used by + /// \c Decl::printGroup to print tag specifiers as recorded in the AST so + /// that the printed source compiles successfully if the original source did. + /// \c TagSpecifierAs does not easily fit the \c CXPrintingPolicyProperty + /// interface and so currently is not exposed there. + /// + /// FIXME: The TagSpecifierAs mechanism does not always print source that is + /// exactly faithful to the original source because, when building the AST, + /// the parser (1) adds all attributes declared on a tag to all later + /// redeclarations of that tag (that is, tag occurrences declaring an + /// attribute or member list), and (2) drops attributes declared on a tag + /// after an occurrence of that tag declaring a member list. The first + /// change should not affect semantics or diagnostics because it merely + /// reveals the accumulated attributes. The second change only loses + /// warnings about how an attribute cannot be declared after the member list + /// has been specified, and such attributes otherwise should have no effect. + /// Thus, fixing these changes doesn't seem vital. Moreover, fixing them + /// would require the parser to build the AST with an exact record of which + /// attributes are introduced at each tag (re)declaration. + TagDecl *TagSpecifierAs; }; } // end namespace clang Index: lib/AST/DeclPrinter.cpp =================================================================== --- lib/AST/DeclPrinter.cpp +++ lib/AST/DeclPrinter.cpp @@ -177,13 +177,13 @@ bool isFirst = true; for ( ; Begin != End; ++Begin) { if (isFirst) { - if(TD) - SubPolicy.IncludeTagDefinition = true; + if (TD) + SubPolicy.TagSpecifierAs = TD; SubPolicy.SuppressSpecifiers = false; isFirst = false; } else { if (!isFirst) Out << ", "; - SubPolicy.IncludeTagDefinition = false; + SubPolicy.TagSpecifierAs = nullptr; SubPolicy.SuppressSpecifiers = true; } @@ -845,7 +845,7 @@ } PrintingPolicy SubPolicy(Policy); SubPolicy.SuppressSpecifiers = false; - SubPolicy.IncludeTagDefinition = false; + SubPolicy.TagSpecifierAs = nullptr; Init->printPretty(Out, nullptr, SubPolicy, Indentation); if ((D->getInitStyle() == VarDecl::CallInit) && !isa(Init)) Out << ")"; Index: lib/AST/TypePrinter.cpp =================================================================== --- lib/AST/TypePrinter.cpp +++ lib/AST/TypePrinter.cpp @@ -442,7 +442,7 @@ OS << '('; PrintingPolicy InnerPolicy(Policy); - InnerPolicy.IncludeTagDefinition = false; + InnerPolicy.TagSpecifierAs = nullptr; TypePrinter(InnerPolicy).print(QualType(T->getClass(), 0), OS, StringRef()); OS << "::*"; @@ -1040,10 +1040,12 @@ } void TypePrinter::printTag(TagDecl *D, raw_ostream &OS) { - if (Policy.IncludeTagDefinition) { + if (TagDecl *As = Policy.TagSpecifierAs) { + assert(D->getTypeForDecl() == As->getTypeForDecl() && + "tag declarations expected to be for the same type"); PrintingPolicy SubPolicy = Policy; - SubPolicy.IncludeTagDefinition = false; - D->print(OS, SubPolicy, Indentation); + SubPolicy.TagSpecifierAs = nullptr; + As->print(OS, SubPolicy, Indentation); spaceBeforePlaceHolder(OS); return; } @@ -1196,8 +1198,7 @@ void TypePrinter::printElaboratedBefore(const ElaboratedType *T, raw_ostream &OS) { // The tag definition will take care of these. - if (!Policy.IncludeTagDefinition) - { + if (!Policy.TagSpecifierAs) { OS << TypeWithKeyword::getKeywordName(T->getKeyword()); if (T->getKeyword() != ETK_None) OS << " "; Index: test/Misc/ast-print-enum-decl.c =================================================================== --- /dev/null +++ test/Misc/ast-print-enum-decl.c @@ -0,0 +1,91 @@ +// First check compiling and printing of this file. +// +// RUN: %clang_cc1 -verify -ast-print %s > %t.c +// RUN: FileCheck --check-prefixes=CHECK,PRINT %s --input-file %t.c +// +// Now check compiling and printing of the printed file. +// +// RUN: echo "// expected""-warning@* 6 {{'T' is deprecated}}" >> %t.c +// RUN: echo "// expected""-note@* 6 {{'T' has been explicitly marked deprecated here}}" >> %t.c +// +// RUN: %clang_cc1 -verify -ast-print %t.c \ +// RUN: | FileCheck --check-prefixes=CHECK,PRINT %s + +// END. + +// CHECK-LABEL: defFirst +void defFirst() { + // PRINT-NEXT: enum + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-SAME: T { + // PRINT-NEXT: E0, + // PRINT-NEXT: E1 + // PRINT-NEXT: } *p0; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 2 {{'T' has been explicitly marked deprecated here}} + enum __attribute__((aligned(16))) __attribute__((deprecated(""))) T { + E0, E1 + } *p0; + + // PRINT-NEXT: enum T *p1; + enum T *p1; // expected-warning {{'T' is deprecated}} +} + +// CHECK-LABEL: defLast +void defLast() { + // PRINT-NEXT: enum __attribute__((aligned(16))) T *p0; + enum __attribute__((aligned(16))) T *p0; + + // PRINT-NEXT: enum + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-SAME: T { + // PRINT-NEXT: E0, + // PRINT-NEXT: E1 + // PRINT-NEXT: } *p1; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 {{'T' has been explicitly marked deprecated here}} + enum __attribute__((deprecated(""))) T { E0, E1 } *p1; +} + +// CHECK-LABEL: defMiddle +void defMiddle() { + // PRINT-NEXT: enum __attribute__((deprecated(""))) T *p0; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 3 {{'T' has been explicitly marked deprecated here}} + enum __attribute__((deprecated(""))) T *p0; + + // PRINT-NEXT: enum + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-SAME: T { + // PRINT-NEXT: E0 + // PRINT-NEXT: E1 + // PRINT-NEXT: } *p1; + enum __attribute__((aligned(16))) T { E0, E1 } *p1; // expected-warning {{'T' is deprecated}} + + // PRINT-NEXT: enum T *p2; + enum T *p2; // expected-warning {{'T' is deprecated}} +} + +// CHECK-LABEL: declsOnly +void declsOnly() { + // FIXME: For some reason, attributes are ignored if they're not on the first + // declaration and not on the definition. + + // PRINT-NEXT: enum __attribute__((aligned)) T *p0; + enum __attribute__((aligned)) T *p0; + + // PRINT-NEXT: enum T *p1; + enum __attribute__((may_alias)) T *p1; + + // PRINT-NEXT: enum T *p2; + enum T *p2; + + // PRINT-NEXT: enum T *p3; + enum __attribute__((deprecated(""))) T *p3; + + // PRINT-NEXT: enum T *p4; + enum T *p4; +} Index: test/Misc/ast-print-record-decl.c =================================================================== --- /dev/null +++ test/Misc/ast-print-record-decl.c @@ -0,0 +1,251 @@ +// Check struct: +// +// First check compiling and printing of this file. +// +// RUN: %clang -Xclang -verify -S -emit-llvm -DKW=struct -DBASES= -o - %s \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print -DKW=struct -DBASES= %s > %t.c +// RUN: FileCheck --check-prefixes=CHECK,PRINT -DKW=struct -DBASES= %s \ +// RUN: --input-file %t.c +// +// Now check compiling and printing of the printed file. +// +// RUN: echo "// expected""-warning@* 10 {{'T' is deprecated}}" >> %t.c +// RUN: echo "// expected""-note@* 10 {{'T' has been explicitly marked deprecated here}}" >> %t.c +// +// RUN: %clang -Xclang -verify -S -emit-llvm -o - %t.c \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print %t.c \ +// RUN: | FileCheck --check-prefixes=CHECK,PRINT -DKW=struct -DBASES= %s + +// Repeat for union: +// +// First check compiling and printing of this file. +// +// RUN: %clang -Xclang -verify -S -emit-llvm -DKW=union -DBASES= -o - %s \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print -DKW=union -DBASES= %s > %t.c +// RUN: FileCheck --check-prefixes=CHECK,PRINT -DKW=union -DBASES= %s \ +// RUN: --input-file %t.c +// +// Now check compiling and printing of the printed file. +// +// RUN: echo "// expected""-warning@* 10 {{'T' is deprecated}}" >> %t.c +// RUN: echo "// expected""-note@* 10 {{'T' has been explicitly marked deprecated here}}" >> %t.c +// +// RUN: %clang -Xclang -verify -S -emit-llvm -o - %t.c \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print %t.c \ +// RUN: | FileCheck --check-prefixes=CHECK,PRINT -DKW=union -DBASES= %s + +// Repeat for C++ (BASES helps ensure we're printing as C++ not as C): +// +// First check compiling and printing of this file. +// +// RUN: %clang -Xclang -verify -S -emit-llvm -DKW=struct -DBASES=' : B' -o - \ +// RUN: -xc++ %s \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print -DKW=struct -DBASES=' : B' -xc++ %s \ +// RUN: > %t.cpp +// RUN: FileCheck --check-prefixes=CHECK,PRINT,CXX -DKW=struct \ +// RUN: -DBASES=' : B' %s --input-file %t.cpp +// +// Now check compiling and printing of the printed file. +// +// RUN: echo "// expected""-warning@* 10 {{'T' is deprecated}}" >> %t.cpp +// RUN: echo "// expected""-note@* 10 {{'T' has been explicitly marked deprecated here}}" >> %t.cpp +// +// RUN: %clang -Xclang -verify -S -emit-llvm -o - %t.cpp \ +// RUN: | FileCheck --check-prefixes=CHECK,LLVM %s +// +// RUN: %clang_cc1 -verify -ast-print %t.cpp \ +// RUN: | FileCheck --check-prefixes=CHECK,PRINT,CXX -DKW=struct \ +// RUN: -DBASES=' : B' %s + +// END. + +#ifndef KW +# error KW undefined +# define KW struct // help syntax checkers +#endif + +#ifndef BASES +# error BASES undefined +# define BASES // help syntax checkers +#endif + +struct B {}; + +// CHECK-LABEL: defFirst +void defFirst() { + // PRINT-NEXT: [[KW]] + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-NOT: __attribute__ + // PRINT-SAME: T[[BASES]] { + // PRINT-NEXT: int i; + // PRINT-NEXT: } *p0; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 2 {{'T' has been explicitly marked deprecated here}} + KW __attribute__((aligned(16))) __attribute__((deprecated(""))) T BASES { + int i; + } *p0; + + // PRINT-NEXT: [[KW]] T *p1; + KW T *p1; // expected-warning {{'T' is deprecated}} + + // LLVM: store i64 16 + long s0 = sizeof *p0; + // LLVM-NEXT: store i64 16 + long s1 = sizeof *p1; +} + +// CHECK-LABEL: defLast +void defLast() { + // PRINT-NEXT: [[KW]] __attribute__((aligned(16))) T *p0; + KW __attribute__((aligned(16))) T *p0; + + // PRINT-NEXT: [[KW]] + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-NOT: __attribute__ + // PRINT-SAME: T[[BASES]] { + // PRINT-NEXT: int i; + // PRINT-NEXT: } *p1; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 {{'T' has been explicitly marked deprecated here}} + KW __attribute__((deprecated(""))) T BASES { int i; } *p1; + + // LLVM: store i64 16 + long s0 = sizeof *p0; + // LLVM-NEXT: store i64 16 + long s1 = sizeof *p1; +} + +// CHECK-LABEL: defMiddle +void defMiddle() { + // PRINT-NEXT: [[KW]] __attribute__((deprecated(""))) T *p0; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 3 {{'T' has been explicitly marked deprecated here}} + KW __attribute__((deprecated(""))) T *p0; + + // PRINT-NEXT: [[KW]] + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-NOT: __attribute__ + // PRINT-SAME: T[[BASES]] { + // PRINT-NEXT: int i; + // PRINT-NEXT: } *p1; + KW __attribute__((aligned(16))) T BASES { int i; } *p1; // expected-warning {{'T' is deprecated}} + + // PRINT-NEXT: [[KW]] T *p2; + KW T *p2; // expected-warning {{'T' is deprecated}} + + // LLVM: store i64 16 + long s0 = sizeof *p0; + // LLVM-NEXT: store i64 16 + long s1 = sizeof *p1; + // LLVM-NEXT: store i64 16 + long s2 = sizeof *p2; +} + +// CHECK-LABEL: defSelfRef +void defSelfRef() { + // PRINT-NEXT: [[KW]] __attribute__((deprecated(""))) T *p0; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 2 {{'T' has been explicitly marked deprecated here}} + KW __attribute__((deprecated(""))) T *p0; + + // PRINT-NEXT: [[KW]] + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-DAG: __attribute__((aligned(16))) + // PRINT-NOT: __attribute__ + // PRINT-SAME: T[[BASES]] { + // PRINT-NEXT: int i; + // PRINT-NEXT: [[KW]] T *p2; + // PRINT-NEXT: } *p1; + KW __attribute__((aligned(16))) T BASES { // expected-warning {{'T' is deprecated}} + int i; + KW T *p2; + } *p1; + + // LLVM: store i64 16 + long s0 = sizeof *p0; + // LLVM-NEXT: store i64 16 + long s1 = sizeof *p1; + // LLVM-NEXT: store i64 16 + long s2 = sizeof *p0->p2; + // LLVM-NEXT: store i64 16 + long s3 = sizeof *p1->p2; + // LLVM-NEXT: store i64 16 + long s4 = sizeof *p1->p2->p2; +} + +// CHECK-LABEL: declsOnly +void declsOnly() { + // PRINT-NEXT: [[KW]] T *p0; + KW T *p0; + + // PRINT-NEXT: [[KW]] __attribute__((may_alias)) T *p1; + KW __attribute__((may_alias)) T *p1; + + // PRINT-NEXT: [[KW]] T *p2; + KW T *p2; + + // PRINT-NEXT: [[KW]] + // PRINT-DAG: __attribute__((may_alias)) + // PRINT-DAG: __attribute__((deprecated(""))) + // PRINT-NOT: __attribute__ + // PRINT-SAME: T *p3; + // expected-warning@+2 {{'T' is deprecated}} + // expected-note@+1 2 {{'T' has been explicitly marked deprecated here}} + KW __attribute__((deprecated(""))) T *p3; + + // PRINT-NEXT: [[KW]] T *p4; + KW T *p4; // expected-warning {{'T' is deprecated}} +} + +// Make sure expanded printing of tag types is turned back off in other parts +// of a tag declaration. The base class list is checked above. + +// CHECK-LABEL: inMembers +void inMembers() { + // PRINT-NEXT: [[KW]] T1 { + // PRINT-NEXT: int i; + // PRINT-NEXT: }; + KW T1 { int i; }; + // PRINT-NEXT: [[KW]] T2 { + // PRINT-NEXT: [[KW]] T1 i; + // PRINT-NEXT: }; + KW T2 { KW T1 i; }; +} + +// CHECK-LABEL: inInit +void inInit() { + // PRINT-NEXT: [[KW]] T1 { + // PRINT-NEXT: int i; + // PRINT-NEXT: }; + KW T1 { int i; }; + // PRINT-NEXT: [[KW]] T2 { + // PRINT-NEXT: long i; + // PRINT-NEXT: } t2 = {sizeof([[KW]] T1)}; + KW T2 { long i; } t2 = {sizeof(KW T1)}; +} + +#ifdef __cplusplus +// CXX-LABEL: inMemberPtr +void inMemberPtr() { + // CXX-NEXT: [[KW]] T1 { + // CXX-NEXT: int i; + // CXX-NEXT: }; + KW T1 { int i; }; + // CXX-NEXT: [[KW]] T2 { + // CXX-NEXT: } T1::*p; + KW T2 {} T1::*p; +} +#endif Index: tools/c-index-test/c-index-test.c =================================================================== --- tools/c-index-test/c-index-test.c +++ tools/c-index-test/c-index-test.c @@ -97,8 +97,6 @@ CXPrintingPolicy_SuppressSpecifiers}, {"CINDEXTEST_PRINTINGPOLICY_SUPPRESSTAGKEYWORD", CXPrintingPolicy_SuppressTagKeyword}, - {"CINDEXTEST_PRINTINGPOLICY_INCLUDETAGDEFINITION", - CXPrintingPolicy_IncludeTagDefinition}, {"CINDEXTEST_PRINTINGPOLICY_SUPPRESSSCOPE", CXPrintingPolicy_SuppressScope}, {"CINDEXTEST_PRINTINGPOLICY_SUPPRESSUNWRITTENSCOPE", Index: tools/libclang/CIndex.cpp =================================================================== --- tools/libclang/CIndex.cpp +++ tools/libclang/CIndex.cpp @@ -4739,8 +4739,6 @@ return P->SuppressSpecifiers; case CXPrintingPolicy_SuppressTagKeyword: return P->SuppressTagKeyword; - case CXPrintingPolicy_IncludeTagDefinition: - return P->IncludeTagDefinition; case CXPrintingPolicy_SuppressScope: return P->SuppressScope; case CXPrintingPolicy_SuppressUnwrittenScope: @@ -4808,9 +4806,6 @@ case CXPrintingPolicy_SuppressTagKeyword: P->SuppressTagKeyword = Value; return; - case CXPrintingPolicy_IncludeTagDefinition: - P->IncludeTagDefinition = Value; - return; case CXPrintingPolicy_SuppressScope: P->SuppressScope = Value; return;