/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/Comment.cpp

Source (jump to first uncovered line)
//===--- Comment.cpp - Comment AST node implementation --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "clang/AST/Comment.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/Basic/CharInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include <type_traits>

namespace clang {
namespace comments {

// Check that no comment class has a non-trival destructor. They are allocated
// with a BumpPtrAllocator and therefore their destructor is not executed.
#define ABSTRACT_COMMENT(COMMENT)
#define COMMENT(CLASS, PARENT)                                                 \
  static_assert(std::is_trivially_destructible<CLASS>::value,                  \
                #CLASS " should be trivially destructible!");
#include "clang/AST/CommentNodes.inc"
#undef COMMENT
#undef ABSTRACT_COMMENT

// DeclInfo is also allocated with a BumpPtrAllocator.
static_assert(std::is_trivially_destructible<DeclInfo>::value,
              "DeclInfo should be trivially destructible!");

const char *Comment::getCommentKindName() const {
  switch (getCommentKind()) {
  case NoCommentKind: return "NoCommentKind";
#define ABSTRACT_COMMENT(COMMENT)
#define COMMENT(CLASS, PARENT) \
  case CLASS##Kind: \
    return #CLASS;
#include "clang/AST/CommentNodes.inc"0
#undef COMMENT
#undef ABSTRACT_COMMENT
  }
  llvm_unreachable("Unknown comment kind!");
}

namespace {
struct good {};
struct bad {};

template <typename T>
good implements_child_begin_end(Comment::child_iterator (T::*)() const) {
  return good();
}

LLVM_ATTRIBUTE_UNUSED
static inline bad implements_child_begin_end(
                      Comment::child_iterator (Comment::*)() const) {
  return bad();
}

#define ASSERT_IMPLEMENTS_child_begin(function) \
  (void) good(implements_child_begin_end(function))

LLVM_ATTRIBUTE_UNUSED
static inline void CheckCommentASTNodes() {
#define ABSTRACT_COMMENT(COMMENT)
#define COMMENT(CLASS, PARENT) \
  ASSERT_IMPLEMENTS_child_begin(&CLASS::child_begin); \
  ASSERT_IMPLEMENTS_child_begin(&CLASS::child_end);
#include "clang/AST/CommentNodes.inc"
#undef COMMENT
#undef ABSTRACT_COMMENT
}

#undef ASSERT_IMPLEMENTS_child_begin

} // end unnamed namespace

Comment::child_iterator Comment::child_begin() const {
  switch (getCommentKind()) {
  case NoCommentKind: llvm_unreachable("comment without a kind");
#define ABSTRACT_COMMENT(COMMENT)
#define COMMENT(CLASS, PARENT) \
  case CLASS##Kind: \
    return static_cast<const CLASS *>(this)->child_begin();
#include "clang/AST/CommentNodes.inc"0
#undef COMMENT
#undef ABSTRACT_COMMENT
  }
  llvm_unreachable("Unknown comment kind!");
}

Comment::child_iterator Comment::child_end() const {
  switch (getCommentKind()) {
  case NoCommentKind: llvm_unreachable("comment without a kind");
#define ABSTRACT_COMMENT(COMMENT)
#define COMMENT(CLASS, PARENT) \
  case CLASS##Kind: \
    return static_cast<const CLASS *>(this)->child_end();
#include "clang/AST/CommentNodes.inc"0
#undef COMMENT
#undef ABSTRACT_COMMENT
  }
  llvm_unreachable("Unknown comment kind!");
}

bool TextComment::isWhitespaceNoCache() const {
  return llvm::all_of(Text, clang::isWhitespace);
}

bool ParagraphComment::isWhitespaceNoCache() const {
  for (child_iterator I = child_begin(), E = child_end(); I != E; ++I2.16k) {
    if (const TextComment *TC = dyn_cast<TextComment>(*I)) {
      if (!TC->isWhitespace())
        return false;
    } else
      return false;
  }
  return true;
}

static TypeLoc lookThroughTypedefOrTypeAliasLocs(TypeLoc &SrcTL) {
  TypeLoc TL = SrcTL.IgnoreParens();

  // Look through attribute types.
  if (AttributedTypeLoc AttributeTL = TL.getAs<AttributedTypeLoc>())
    return AttributeTL.getModifiedLoc();
  // Look through qualified types.
  if (QualifiedTypeLoc QualifiedTL = TL.getAs<QualifiedTypeLoc>())
    return QualifiedTL.getUnqualifiedLoc();
  // Look through pointer types.
  if (PointerTypeLoc PointerTL = TL.getAs<PointerTypeLoc>())
    return PointerTL.getPointeeLoc().getUnqualifiedLoc();
  // Look through reference types.
  if (ReferenceTypeLoc ReferenceTL = TL.getAs<ReferenceTypeLoc>())
    return ReferenceTL.getPointeeLoc().getUnqualifiedLoc();
  // Look through adjusted types.
  if (AdjustedTypeLoc ATL = TL.getAs<AdjustedTypeLoc>())
    return ATL.getOriginalLoc();
  if (BlockPointerTypeLoc BlockPointerTL = TL.getAs<BlockPointerTypeLoc>())
    return BlockPointerTL.getPointeeLoc().getUnqualifiedLoc();
  if (MemberPointerTypeLoc MemberPointerTL = TL.getAs<MemberPointerTypeLoc>())
    return MemberPointerTL.getPointeeLoc().getUnqualifiedLoc();
  if (ElaboratedTypeLoc ETL = TL.getAs<ElaboratedTypeLoc>())
    return ETL.getNamedTypeLoc();

  return TL;
}

static bool getFunctionTypeLoc(TypeLoc TL, FunctionTypeLoc &ResFTL) {
  TypeLoc PrevTL;
  while (PrevTL != TL) {
    PrevTL = TL;
    TL = lookThroughTypedefOrTypeAliasLocs(TL);
  }

  if (FunctionTypeLoc FTL = TL.getAs<FunctionTypeLoc>()) {
    ResFTL = FTL;
    return true;
  }

  if (TemplateSpecializationTypeLoc STL =
          TL.getAs<TemplateSpecializationTypeLoc>()) {
    // If we have a typedef to a template specialization with exactly one
    // template argument of a function type, this looks like std::function,
    // boost::function, or other function wrapper.  Treat these typedefs as
    // functions.
    if (STL.getNumArgs() != 1)
      return false;
    TemplateArgumentLoc MaybeFunction = STL.getArgLoc(0);
    if (MaybeFunction.getArgument().getKind() != TemplateArgument::Type)
      return false;
    TypeSourceInfo *MaybeFunctionTSI = MaybeFunction.getTypeSourceInfo();
    TypeLoc TL = MaybeFunctionTSI->getTypeLoc().getUnqualifiedLoc();
    if (FunctionTypeLoc FTL = TL.getAs<FunctionTypeLoc>()) {
      ResFTL = FTL;
      return true;
    }
  }

  return false;
}

const char *ParamCommandComment::getDirectionAsString(PassDirection D) {
  switch (D) {
  case ParamCommandComment::In:
    return "[in]";
  case ParamCommandComment::Out:
    return "[out]";
  case ParamCommandComment::InOut:
    return "[in,out]";
  }
  llvm_unreachable("unknown PassDirection");
}

void DeclInfo::fill() {
  assert(!IsFilled);

  // Set defaults.
  Kind = OtherKind;
  TemplateKind = NotTemplate;
  IsObjCMethod = false;
  IsInstanceMethod = false;
  IsClassMethod = false;
  IsVariadic = false;
  ParamVars = None;
  TemplateParameters = nullptr;

  if (!CommentDecl) {
    // If there is no declaration, the defaults is our only guess.
    IsFilled = true;
    return;
  }
  CurrentDecl = CommentDecl;

  Decl::Kind K = CommentDecl->getKind();
  const TypeSourceInfo *TSI = nullptr;
  switch (K) {
  default:
    // Defaults are should be good for declarations we don't handle explicitly.
    break;
  case Decl::Function:
  case Decl::CXXMethod:
  case Decl::CXXConstructor:
  case Decl::CXXDestructor:
  case Decl::CXXConversion: {
    const FunctionDecl *FD = cast<FunctionDecl>(CommentDecl);
    Kind = FunctionKind;
    ParamVars = FD->parameters();
    ReturnType = FD->getReturnType();
    unsigned NumLists = FD->getNumTemplateParameterLists();
    if (NumLists != 0) {
      TemplateKind = TemplateSpecialization;
      TemplateParameters =
          FD->getTemplateParameterList(NumLists - 1);
    }

    if (K == Decl::CXXMethod || K == Decl::CXXConstructor2.22k ||
        K == Decl::CXXDestructor2.20k || K == Decl::CXXConversion2.19k) {
      const CXXMethodDecl *MD = cast<CXXMethodDecl>(CommentDecl);
      IsInstanceMethod = MD->isInstance();
      IsClassMethod = !IsInstanceMethod;
    }
    IsVariadic = FD->isVariadic();
    assert(involvesFunctionType());
    break;
  }
  case Decl::ObjCMethod: {
    const ObjCMethodDecl *MD = cast<ObjCMethodDecl>(CommentDecl);
    Kind = FunctionKind;
    ParamVars = MD->parameters();
    ReturnType = MD->getReturnType();
    IsObjCMethod = true;
    IsInstanceMethod = MD->isInstanceMethod();
    IsClassMethod = !IsInstanceMethod;
    IsVariadic = MD->isVariadic();
    assert(involvesFunctionType());
    break;
  }
  case Decl::FunctionTemplate: {
    const FunctionTemplateDecl *FTD = cast<FunctionTemplateDecl>(CommentDecl);
    Kind = FunctionKind;
    TemplateKind = Template;
    const FunctionDecl *FD = FTD->getTemplatedDecl();
    ParamVars = FD->parameters();
    ReturnType = FD->getReturnType();
    TemplateParameters = FTD->getTemplateParameters();
    IsVariadic = FD->isVariadic();
    assert(involvesFunctionType());
    break;
  }
  case Decl::ClassTemplate: {
    const ClassTemplateDecl *CTD = cast<ClassTemplateDecl>(CommentDecl);
    Kind = ClassKind;
    TemplateKind = Template;
    TemplateParameters = CTD->getTemplateParameters();
    break;
  }
  case Decl::ClassTemplatePartialSpecialization: {
    const ClassTemplatePartialSpecializationDecl *CTPSD =
        cast<ClassTemplatePartialSpecializationDecl>(CommentDecl);
    Kind = ClassKind;
    TemplateKind = TemplatePartialSpecialization;
    TemplateParameters = CTPSD->getTemplateParameters();
    break;
  }
  case Decl::ClassTemplateSpecialization:
    Kind = ClassKind;
    TemplateKind = TemplateSpecialization;
    break;
  case Decl::Record:
  case Decl::CXXRecord:
    Kind = ClassKind;
    break;
  case Decl::Var:
    if (const VarTemplateDecl *VTD =
            cast<VarDecl>(CommentDecl)->getDescribedVarTemplate()) {
      TemplateKind = TemplateSpecialization;
      TemplateParameters = VTD->getTemplateParameters();
    }
    LLVM_FALLTHROUGH;
  case Decl::Field:
  case Decl::EnumConstant:
  case Decl::ObjCIvar:
  case Decl::ObjCAtDefsField:
  case Decl::ObjCProperty:
    if (const auto *VD = dyn_cast<DeclaratorDecl>(CommentDecl))
      TSI = VD->getTypeSourceInfo();
    else if (const auto *PD = dyn_cast<ObjCPropertyDecl>(CommentDecl))
      TSI = PD->getTypeSourceInfo();
    Kind = VariableKind;
    break;
  case Decl::VarTemplate: {
    const VarTemplateDecl *VTD = cast<VarTemplateDecl>(CommentDecl);
    Kind = VariableKind;
    TemplateKind = Template;
    TemplateParameters = VTD->getTemplateParameters();
    if (const VarDecl *VD = VTD->getTemplatedDecl())
      TSI = VD->getTypeSourceInfo();
    break;
  }
  case Decl::Namespace:
    Kind = NamespaceKind;
    break;
  case Decl::TypeAlias:
  case Decl::Typedef:
    Kind = TypedefKind;
    TSI = cast<TypedefNameDecl>(CommentDecl)->getTypeSourceInfo();
    break;
  case Decl::TypeAliasTemplate: {
    const TypeAliasTemplateDecl *TAT = cast<TypeAliasTemplateDecl>(CommentDecl);
    Kind = TypedefKind;
    TemplateKind = Template;
    TemplateParameters = TAT->getTemplateParameters();
    if (TypeAliasDecl *TAD = TAT->getTemplatedDecl())
      TSI = TAD->getTypeSourceInfo();
    break;
  }
  case Decl::Enum:
    Kind = EnumKind;
    break;
  }

  // If the type is a typedef / using to something we consider a function,
  // extract arguments and return type.
  if (TSI) {
    TypeLoc TL = TSI->getTypeLoc().getUnqualifiedLoc();
    FunctionTypeLoc FTL;
    if (getFunctionTypeLoc(TL, FTL)) {
      ParamVars = FTL.getParams();
      ReturnType = FTL.getReturnLoc().getType();
      if (const auto *FPT = dyn_cast<FunctionProtoType>(FTL.getTypePtr()))
        IsVariadic = FPT->isVariadic();
      assert(involvesFunctionType());
    }
  }

  IsFilled = true;
}

StringRef ParamCommandComment::getParamName(const FullComment *FC) const {
  assert(isParamIndexValid());
  if (isVarArgParam())
    return "...";
  return FC->getDeclInfo()->ParamVars[getParamIndex()]->getName();
}

StringRef TParamCommandComment::getParamName(const FullComment *FC) const {
  assert(isPositionValid());
  const TemplateParameterList *TPL = FC->getDeclInfo()->TemplateParameters;
  for (unsigned i = 0, e = getDepth(); i != e; ++i64) {
    assert(TPL && "Unknown TemplateParameterList");
    if (i == e - 1)
      return TPL->getParam(getIndex(i))->getName();
    const NamedDecl *Param = TPL->getParam(getIndex(i));
    if (auto *TTP = dyn_cast<TemplateTemplateParmDecl>(Param))
      TPL = TTP->getTemplateParameters();
  }
  return "";
}

} // end namespace comments
} // end namespace clang


Coverage Report

Created: 2022-05-17 06:19

Line	Count	Source (jump to first uncovered line)
1		//===--- Comment.cpp - Comment AST node implementation --------------------===//
2		//
3		// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4		// See https://llvm.org/LICENSE.txt for license information.
5		// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6		//
7		//===----------------------------------------------------------------------===//
8
9		#include "clang/AST/Comment.h"
10		#include "clang/AST/ASTContext.h"
11		#include "clang/AST/Decl.h"
12		#include "clang/AST/DeclObjC.h"
13		#include "clang/AST/DeclTemplate.h"
14		#include "clang/Basic/CharInfo.h"
15		#include "llvm/Support/ErrorHandling.h"
16		#include <type_traits>
17
18		namespace clang {
19		namespace comments {
20
21		// Check that no comment class has a non-trival destructor. They are allocated
22		// with a BumpPtrAllocator and therefore their destructor is not executed.
23		#define ABSTRACT_COMMENT(COMMENT)
24		#define COMMENT(CLASS, PARENT) \
25		static_assert(std::is_trivially_destructible<CLASS>::value, \
26		#CLASS " should be trivially destructible!");
27		#include "clang/AST/CommentNodes.inc"
28		#undef COMMENT
29		#undef ABSTRACT_COMMENT
30
31		// DeclInfo is also allocated with a BumpPtrAllocator.
32		static_assert(std::is_trivially_destructible<DeclInfo>::value,
33		"DeclInfo should be trivially destructible!");
34
35	714	const char *Comment::getCommentKindName() const {
36	714	switch (getCommentKind()) {
37	0	case NoCommentKind: return "NoCommentKind";
38	0	#define ABSTRACT_COMMENT(COMMENT)
39	0	#define COMMENT(CLASS, PARENT) \
40	714	case CLASS##Kind: \
41	714	return #CLASS;
42	714	#include "clang/AST/CommentNodes.inc"0
43	714	#undef COMMENT
44	714	#undef ABSTRACT_COMMENT
45	714	}
46	0	llvm_unreachable("Unknown comment kind!");
47	0	}
48
49		namespace {
50		struct good {};
51		struct bad {};
52
53		template <typename T>
54	0	good implements_child_begin_end(Comment::child_iterator (T::*)() const) {
55	0	return good();
56	0	} Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::BlockCommandComment>(clang::comments::Comment* const* (clang::comments::BlockCommandComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::VerbatimBlockComment>(clang::comments::Comment const* (clang::comments::VerbatimBlockComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::VerbatimLineComment>(clang::comments::Comment const* (clang::comments::VerbatimLineComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::ParagraphComment>(clang::comments::Comment const* (clang::comments::ParagraphComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::FullComment>(clang::comments::Comment const* (clang::comments::FullComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::HTMLEndTagComment>(clang::comments::Comment const* (clang::comments::HTMLEndTagComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::HTMLStartTagComment>(clang::comments::Comment const* (clang::comments::HTMLStartTagComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::InlineCommandComment>(clang::comments::Comment const* (clang::comments::InlineCommandComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::TextComment>(clang::comments::Comment const* (clang::comments::TextComment::)() const) Unexecuted instantiation: Comment.cpp:clang::comments::(anonymous namespace)::good clang::comments::(anonymous namespace)::implements_child_begin_end<clang::comments::VerbatimBlockLineComment>(clang::comments::Comment const* (clang::comments::VerbatimBlockLineComment::*)() const)
57
58		LLVM_ATTRIBUTE_UNUSED
59		static inline bad implements_child_begin_end(
60	0	Comment::child_iterator (Comment::*)() const) {
61	0	return bad();
62	0	}
63
64		#define ASSERT_IMPLEMENTS_child_begin(function) \
65		(void) good(implements_child_begin_end(function))
66
67		LLVM_ATTRIBUTE_UNUSED
68	0	static inline void CheckCommentASTNodes() {
69	0	#define ABSTRACT_COMMENT(COMMENT)
70	0	#define COMMENT(CLASS, PARENT) \
71	0	ASSERT_IMPLEMENTS_child_begin(&CLASS::child_begin); \
72	0	ASSERT_IMPLEMENTS_child_begin(&CLASS::child_end);
73	0	#include "clang/AST/CommentNodes.inc"
74	0	#undef COMMENT
75	0	#undef ABSTRACT_COMMENT
76	0	}
77
78		#undef ASSERT_IMPLEMENTS_child_begin
79
80		} // end unnamed namespace
81
82	18.7k	Comment::child_iterator Comment::child_begin() const {
83	18.7k	switch (getCommentKind()) {
84	0	case NoCommentKind: llvm_unreachable("comment without a kind");
85	0	#define ABSTRACT_COMMENT(COMMENT)
86	0	#define COMMENT(CLASS, PARENT) \
87	18.7k	case CLASS##Kind: \
88	18.7k	return static_cast<const CLASS *>(this)->child_begin();
89	18.7k	#include "clang/AST/CommentNodes.inc"0
90	18.7k	#undef COMMENT
91	18.7k	#undef ABSTRACT_COMMENT
92	18.7k	}
93	0	llvm_unreachable("Unknown comment kind!");
94	0	}
95
96	13.0k	Comment::child_iterator Comment::child_end() const {
97	13.0k	switch (getCommentKind()) {
98	0	case NoCommentKind: llvm_unreachable("comment without a kind");
99	0	#define ABSTRACT_COMMENT(COMMENT)
100	0	#define COMMENT(CLASS, PARENT) \
101	13.0k	case CLASS##Kind: \
102	13.0k	return static_cast<const CLASS *>(this)->child_end();
103	13.0k	#include "clang/AST/CommentNodes.inc"0
104	13.0k	#undef COMMENT
105	13.0k	#undef ABSTRACT_COMMENT
106	13.0k	}
107	0	llvm_unreachable("Unknown comment kind!");
108	0	}
109
110	10.3k	bool TextComment::isWhitespaceNoCache() const {
111	10.3k	return llvm::all_of(Text, clang::isWhitespace);
112	10.3k	}
113
114	8.32k	bool ParagraphComment::isWhitespaceNoCache() const {
115	10.4k	for (child_iterator I = child_begin(), E = child_end(); I != E; ++I2.16k ) {
116	9.94k	if (const TextComment TC = dyn_cast<TextComment>(I)) {
117	9.87k	if (!TC->isWhitespace())
118	7.70k	return false;
119	9.87k	} else
120	75	return false;
121	9.94k	}
122	541	return true;
123	8.32k	}
124
125	763	static TypeLoc lookThroughTypedefOrTypeAliasLocs(TypeLoc &SrcTL) {
126	763	TypeLoc TL = SrcTL.IgnoreParens();
127
128		// Look through attribute types.
129	763	if (AttributedTypeLoc AttributeTL = TL.getAs<AttributedTypeLoc>())
130	3	return AttributeTL.getModifiedLoc();
131		// Look through qualified types.
132	760	if (QualifiedTypeLoc QualifiedTL = TL.getAs<QualifiedTypeLoc>())
133	0	return QualifiedTL.getUnqualifiedLoc();
134		// Look through pointer types.
135	760	if (PointerTypeLoc PointerTL = TL.getAs<PointerTypeLoc>())
136	96	return PointerTL.getPointeeLoc().getUnqualifiedLoc();
137		// Look through reference types.
138	664	if (ReferenceTypeLoc ReferenceTL = TL.getAs<ReferenceTypeLoc>())
139	18	return ReferenceTL.getPointeeLoc().getUnqualifiedLoc();
140		// Look through adjusted types.
141	646	if (AdjustedTypeLoc ATL = TL.getAs<AdjustedTypeLoc>())
142	0	return ATL.getOriginalLoc();
143	646	if (BlockPointerTypeLoc BlockPointerTL = TL.getAs<BlockPointerTypeLoc>())
144	19	return BlockPointerTL.getPointeeLoc().getUnqualifiedLoc();
145	627	if (MemberPointerTypeLoc MemberPointerTL = TL.getAs<MemberPointerTypeLoc>())
146	6	return MemberPointerTL.getPointeeLoc().getUnqualifiedLoc();
147	621	if (ElaboratedTypeLoc ETL = TL.getAs<ElaboratedTypeLoc>())
148	80	return ETL.getNamedTypeLoc();
149
150	541	return TL;
151	621	}
152
153	469	static bool getFunctionTypeLoc(TypeLoc TL, FunctionTypeLoc &ResFTL) {
154	469	TypeLoc PrevTL;
155	1.23k	while (PrevTL != TL) {
156	763	PrevTL = TL;
157	763	TL = lookThroughTypedefOrTypeAliasLocs(TL);
158	763	}
159
160	469	if (FunctionTypeLoc FTL = TL.getAs<FunctionTypeLoc>()) {
161	82	ResFTL = FTL;
162	82	return true;
163	82	}
164
165	387	if (TemplateSpecializationTypeLoc STL =
166	387	TL.getAs<TemplateSpecializationTypeLoc>()) {
167		// If we have a typedef to a template specialization with exactly one
168		// template argument of a function type, this looks like std::function,
169		// boost::function, or other function wrapper. Treat these typedefs as
170		// functions.
171	58	if (STL.getNumArgs() != 1)
172	16	return false;
173	42	TemplateArgumentLoc MaybeFunction = STL.getArgLoc(0);
174	42	if (MaybeFunction.getArgument().getKind() != TemplateArgument::Type)
175	6	return false;
176	36	TypeSourceInfo *MaybeFunctionTSI = MaybeFunction.getTypeSourceInfo();
177	36	TypeLoc TL = MaybeFunctionTSI->getTypeLoc().getUnqualifiedLoc();
178	36	if (FunctionTypeLoc FTL = TL.getAs<FunctionTypeLoc>()) {
179	32	ResFTL = FTL;
180	32	return true;
181	32	}
182	36	}
183
184	333	return false;
185	387	}
186
187	39	const char *ParamCommandComment::getDirectionAsString(PassDirection D) {
188	39	switch (D) {
189	21	case ParamCommandComment::In:
190	21	return "[in]";
191	5	case ParamCommandComment::Out:
192	5	return "[out]";
193	13	case ParamCommandComment::InOut:
194	13	return "[in,out]";
195	39	}
196	0	llvm_unreachable("unknown PassDirection");
197	0	}
198
199	3.31k	void DeclInfo::fill() {
200	3.31k	assert(!IsFilled);
201
202		// Set defaults.
203	0	Kind = OtherKind;
204	3.31k	TemplateKind = NotTemplate;
205	3.31k	IsObjCMethod = false;
206	3.31k	IsInstanceMethod = false;
207	3.31k	IsClassMethod = false;
208	3.31k	IsVariadic = false;
209	3.31k	ParamVars = None;
210	3.31k	TemplateParameters = nullptr;
211
212	3.31k	if (!CommentDecl) {
213		// If there is no declaration, the defaults is our only guess.
214	0	IsFilled = true;
215	0	return;
216	0	}
217	3.31k	CurrentDecl = CommentDecl;
218
219	3.31k	Decl::Kind K = CommentDecl->getKind();
220	3.31k	const TypeSourceInfo *TSI = nullptr;
221	3.31k	switch (K) {
222	91	default:
223		// Defaults are should be good for declarations we don't handle explicitly.
224	91	break;
225	2.19k	case Decl::Function:
226	2.27k	case Decl::CXXMethod:
227	2.29k	case Decl::CXXConstructor:
228	2.30k	case Decl::CXXDestructor:
229	2.30k	case Decl::CXXConversion: {
230	2.30k	const FunctionDecl *FD = cast<FunctionDecl>(CommentDecl);
231	2.30k	Kind = FunctionKind;
232	2.30k	ParamVars = FD->parameters();
233	2.30k	ReturnType = FD->getReturnType();
234	2.30k	unsigned NumLists = FD->getNumTemplateParameterLists();
235	2.30k	if (NumLists != 0) {
236	24	TemplateKind = TemplateSpecialization;
237	24	TemplateParameters =
238	24	FD->getTemplateParameterList(NumLists - 1);
239	24	}
240
241	2.30k	if (K == Decl::CXXMethod \|\| K == Decl::CXXConstructor2.22k \|\|
242	2.30k	K == Decl::CXXDestructor2.20k \|\| K == Decl::CXXConversion2.19k ) {
243	107	const CXXMethodDecl *MD = cast<CXXMethodDecl>(CommentDecl);
244	107	IsInstanceMethod = MD->isInstance();
245	107	IsClassMethod = !IsInstanceMethod;
246	107	}
247	2.30k	IsVariadic = FD->isVariadic();
248	2.30k	assert(involvesFunctionType());
249	0	break;
250	2.30k	}
251	89	case Decl::ObjCMethod: {
252	89	const ObjCMethodDecl *MD = cast<ObjCMethodDecl>(CommentDecl);
253	89	Kind = FunctionKind;
254	89	ParamVars = MD->parameters();
255	89	ReturnType = MD->getReturnType();
256	89	IsObjCMethod = true;
257	89	IsInstanceMethod = MD->isInstanceMethod();
258	89	IsClassMethod = !IsInstanceMethod;
259	89	IsVariadic = MD->isVariadic();
260	89	assert(involvesFunctionType());
261	0	break;
262	2.30k	}
263	121	case Decl::FunctionTemplate: {
264	121	const FunctionTemplateDecl *FTD = cast<FunctionTemplateDecl>(CommentDecl);
265	121	Kind = FunctionKind;
266	121	TemplateKind = Template;
267	121	const FunctionDecl *FD = FTD->getTemplatedDecl();
268	121	ParamVars = FD->parameters();
269	121	ReturnType = FD->getReturnType();
270	121	TemplateParameters = FTD->getTemplateParameters();
271	121	IsVariadic = FD->isVariadic();
272	121	assert(involvesFunctionType());
273	0	break;
274	2.30k	}
275	45	case Decl::ClassTemplate: {
276	45	const ClassTemplateDecl *CTD = cast<ClassTemplateDecl>(CommentDecl);
277	45	Kind = ClassKind;
278	45	TemplateKind = Template;
279	45	TemplateParameters = CTD->getTemplateParameters();
280	45	break;
281	2.30k	}
282	14	case Decl::ClassTemplatePartialSpecialization: {
283	14	const ClassTemplatePartialSpecializationDecl *CTPSD =
284	14	cast<ClassTemplatePartialSpecializationDecl>(CommentDecl);
285	14	Kind = ClassKind;
286	14	TemplateKind = TemplatePartialSpecialization;
287	14	TemplateParameters = CTPSD->getTemplateParameters();
288	14	break;
289	2.30k	}
290	11	case Decl::ClassTemplateSpecialization:
291	11	Kind = ClassKind;
292	11	TemplateKind = TemplateSpecialization;
293	11	break;
294	15	case Decl::Record:
295	105	case Decl::CXXRecord:
296	105	Kind = ClassKind;
297	105	break;
298	199	case Decl::Var:
299	199	if (const VarTemplateDecl *VTD =
300	199	cast<VarDecl>(CommentDecl)->getDescribedVarTemplate()) {
301	1	TemplateKind = TemplateSpecialization;
302	1	TemplateParameters = VTD->getTemplateParameters();
303	1	}
304	199	LLVM_FALLTHROUGH;
305	252	case Decl::Field:
306	281	case Decl::EnumConstant:
307	287	case Decl::ObjCIvar:
308	287	case Decl::ObjCAtDefsField:
309	320	case Decl::ObjCProperty:
310	320	if (const auto *VD = dyn_cast<DeclaratorDecl>(CommentDecl))
311	258	TSI = VD->getTypeSourceInfo();
312	62	else if (const auto *PD = dyn_cast<ObjCPropertyDecl>(CommentDecl))
313	33	TSI = PD->getTypeSourceInfo();
314	320	Kind = VariableKind;
315	320	break;
316	6	case Decl::VarTemplate: {
317	6	const VarTemplateDecl *VTD = cast<VarTemplateDecl>(CommentDecl);
318	6	Kind = VariableKind;
319	6	TemplateKind = Template;
320	6	TemplateParameters = VTD->getTemplateParameters();
321	6	if (const VarDecl *VD = VTD->getTemplatedDecl())
322	6	TSI = VD->getTypeSourceInfo();
323	6	break;
324	287	}
325	15	case Decl::Namespace:
326	15	Kind = NamespaceKind;
327	15	break;
328	55	case Decl::TypeAlias:
329	149	case Decl::Typedef:
330	149	Kind = TypedefKind;
331	149	TSI = cast<TypedefNameDecl>(CommentDecl)->getTypeSourceInfo();
332	149	break;
333	23	case Decl::TypeAliasTemplate: {
334	23	const TypeAliasTemplateDecl *TAT = cast<TypeAliasTemplateDecl>(CommentDecl);
335	23	Kind = TypedefKind;
336	23	TemplateKind = Template;
337	23	TemplateParameters = TAT->getTemplateParameters();
338	23	if (TypeAliasDecl *TAD = TAT->getTemplatedDecl())
339	23	TSI = TAD->getTypeSourceInfo();
340	23	break;
341	55	}
342	27	case Decl::Enum:
343	27	Kind = EnumKind;
344	27	break;
345	3.31k	}
346
347		// If the type is a typedef / using to something we consider a function,
348		// extract arguments and return type.
349	3.31k	if (TSI) {
350	469	TypeLoc TL = TSI->getTypeLoc().getUnqualifiedLoc();
351	469	FunctionTypeLoc FTL;
352	469	if (getFunctionTypeLoc(TL, FTL)) {
353	114	ParamVars = FTL.getParams();
354	114	ReturnType = FTL.getReturnLoc().getType();
355	114	if (const auto *FPT = dyn_cast<FunctionProtoType>(FTL.getTypePtr()))
356	114	IsVariadic = FPT->isVariadic();
357	114	assert(involvesFunctionType());
358	114	}
359	469	}
360
361	0	IsFilled = true;
362	3.31k	}
363
364	263	StringRef ParamCommandComment::getParamName(const FullComment *FC) const {
365	263	assert(isParamIndexValid());
366	263	if (isVarArgParam())
367	15	return "...";
368	248	return FC->getDeclInfo()->ParamVars[getParamIndex()]->getName();
369	263	}
370
371	165	StringRef TParamCommandComment::getParamName(const FullComment *FC) const {
372	165	assert(isPositionValid());
373	0	const TemplateParameterList *TPL = FC->getDeclInfo()->TemplateParameters;
374	229	for (unsigned i = 0, e = getDepth(); i != e; ++i64 ) {
375	229	assert(TPL && "Unknown TemplateParameterList");
376	229	if (i == e - 1)
377	165	return TPL->getParam(getIndex(i))->getName();
378	64	const NamedDecl *Param = TPL->getParam(getIndex(i));
379	64	if (auto *TTP = dyn_cast<TemplateTemplateParmDecl>(Param))
380	64	TPL = TTP->getTemplateParameters();
381	64	}
382	0	return "";
383	165	}
384
385		} // end namespace comments
386		} // end namespace clang
387