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llvm-project/clang/tools/libclang/CXComment.cpp

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//===- CXComment.cpp - libclang APIs for manipulating CXComments ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines all libclang APIs related to walking comment AST.
//
//===----------------------------------------------------------------------===//
#include "clang-c/Index.h"
#include "CXComment.h"
#include "CXCursor.h"
#include "CXString.h"
#include "SimpleFormatContext.h"
#include "clang/AST/CommentCommandTraits.h"
#include "clang/AST/CommentVisitor.h"
#include "clang/AST/Decl.h"
#include "clang/AST/PrettyPrinter.h"
#include "clang/Format/Format.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <climits>
using namespace clang;
using namespace clang::cxstring;
using namespace clang::comments;
using namespace clang::cxcomment;
extern "C" {
enum CXCommentKind clang_Comment_getKind(CXComment CXC) {
const Comment *C = getASTNode(CXC);
if (!C)
return CXComment_Null;
switch (C->getCommentKind()) {
case Comment::NoCommentKind:
return CXComment_Null;
case Comment::TextCommentKind:
return CXComment_Text;
case Comment::InlineCommandCommentKind:
return CXComment_InlineCommand;
case Comment::HTMLStartTagCommentKind:
return CXComment_HTMLStartTag;
case Comment::HTMLEndTagCommentKind:
return CXComment_HTMLEndTag;
case Comment::ParagraphCommentKind:
return CXComment_Paragraph;
case Comment::BlockCommandCommentKind:
return CXComment_BlockCommand;
case Comment::ParamCommandCommentKind:
return CXComment_ParamCommand;
case Comment::TParamCommandCommentKind:
return CXComment_TParamCommand;
case Comment::VerbatimBlockCommentKind:
return CXComment_VerbatimBlockCommand;
case Comment::VerbatimBlockLineCommentKind:
return CXComment_VerbatimBlockLine;
case Comment::VerbatimLineCommentKind:
return CXComment_VerbatimLine;
case Comment::FullCommentKind:
return CXComment_FullComment;
}
llvm_unreachable("unknown CommentKind");
}
unsigned clang_Comment_getNumChildren(CXComment CXC) {
const Comment *C = getASTNode(CXC);
if (!C)
return 0;
return C->child_count();
}
CXComment clang_Comment_getChild(CXComment CXC, unsigned ChildIdx) {
const Comment *C = getASTNode(CXC);
if (!C || ChildIdx >= C->child_count())
return createCXComment(NULL, NULL);
return createCXComment(*(C->child_begin() + ChildIdx), CXC.TranslationUnit);
}
unsigned clang_Comment_isWhitespace(CXComment CXC) {
const Comment *C = getASTNode(CXC);
if (!C)
return false;
if (const TextComment *TC = dyn_cast<TextComment>(C))
return TC->isWhitespace();
if (const ParagraphComment *PC = dyn_cast<ParagraphComment>(C))
return PC->isWhitespace();
return false;
}
unsigned clang_InlineContentComment_hasTrailingNewline(CXComment CXC) {
const InlineContentComment *ICC = getASTNodeAs<InlineContentComment>(CXC);
if (!ICC)
return false;
return ICC->hasTrailingNewline();
}
CXString clang_TextComment_getText(CXComment CXC) {
const TextComment *TC = getASTNodeAs<TextComment>(CXC);
if (!TC)
return cxstring::createNull();
return createCXString(TC->getText(), /*DupString=*/ false);
}
CXString clang_InlineCommandComment_getCommandName(CXComment CXC) {
const InlineCommandComment *ICC = getASTNodeAs<InlineCommandComment>(CXC);
if (!ICC)
return cxstring::createNull();
const CommandTraits &Traits = getCommandTraits(CXC);
return createCXString(ICC->getCommandName(Traits), /*DupString=*/ false);
}
enum CXCommentInlineCommandRenderKind
clang_InlineCommandComment_getRenderKind(CXComment CXC) {
const InlineCommandComment *ICC = getASTNodeAs<InlineCommandComment>(CXC);
if (!ICC)
return CXCommentInlineCommandRenderKind_Normal;
switch (ICC->getRenderKind()) {
case InlineCommandComment::RenderNormal:
return CXCommentInlineCommandRenderKind_Normal;
case InlineCommandComment::RenderBold:
return CXCommentInlineCommandRenderKind_Bold;
case InlineCommandComment::RenderMonospaced:
return CXCommentInlineCommandRenderKind_Monospaced;
case InlineCommandComment::RenderEmphasized:
return CXCommentInlineCommandRenderKind_Emphasized;
}
llvm_unreachable("unknown InlineCommandComment::RenderKind");
}
unsigned clang_InlineCommandComment_getNumArgs(CXComment CXC) {
const InlineCommandComment *ICC = getASTNodeAs<InlineCommandComment>(CXC);
if (!ICC)
return 0;
return ICC->getNumArgs();
}
CXString clang_InlineCommandComment_getArgText(CXComment CXC,
unsigned ArgIdx) {
const InlineCommandComment *ICC = getASTNodeAs<InlineCommandComment>(CXC);
if (!ICC || ArgIdx >= ICC->getNumArgs())
return cxstring::createNull();
return createCXString(ICC->getArgText(ArgIdx), /*DupString=*/ false);
}
CXString clang_HTMLTagComment_getTagName(CXComment CXC) {
const HTMLTagComment *HTC = getASTNodeAs<HTMLTagComment>(CXC);
if (!HTC)
return cxstring::createNull();
return createCXString(HTC->getTagName(), /*DupString=*/ false);
}
unsigned clang_HTMLStartTagComment_isSelfClosing(CXComment CXC) {
const HTMLStartTagComment *HST = getASTNodeAs<HTMLStartTagComment>(CXC);
if (!HST)
return false;
return HST->isSelfClosing();
}
unsigned clang_HTMLStartTag_getNumAttrs(CXComment CXC) {
const HTMLStartTagComment *HST = getASTNodeAs<HTMLStartTagComment>(CXC);
if (!HST)
return 0;
return HST->getNumAttrs();
}
CXString clang_HTMLStartTag_getAttrName(CXComment CXC, unsigned AttrIdx) {
const HTMLStartTagComment *HST = getASTNodeAs<HTMLStartTagComment>(CXC);
if (!HST || AttrIdx >= HST->getNumAttrs())
return cxstring::createNull();
return createCXString(HST->getAttr(AttrIdx).Name, /*DupString=*/ false);
}
CXString clang_HTMLStartTag_getAttrValue(CXComment CXC, unsigned AttrIdx) {
const HTMLStartTagComment *HST = getASTNodeAs<HTMLStartTagComment>(CXC);
if (!HST || AttrIdx >= HST->getNumAttrs())
return cxstring::createNull();
return createCXString(HST->getAttr(AttrIdx).Value, /*DupString=*/ false);
}
CXString clang_BlockCommandComment_getCommandName(CXComment CXC) {
const BlockCommandComment *BCC = getASTNodeAs<BlockCommandComment>(CXC);
if (!BCC)
return cxstring::createNull();
const CommandTraits &Traits = getCommandTraits(CXC);
return createCXString(BCC->getCommandName(Traits), /*DupString=*/ false);
}
unsigned clang_BlockCommandComment_getNumArgs(CXComment CXC) {
const BlockCommandComment *BCC = getASTNodeAs<BlockCommandComment>(CXC);
if (!BCC)
return 0;
return BCC->getNumArgs();
}
CXString clang_BlockCommandComment_getArgText(CXComment CXC,
unsigned ArgIdx) {
const BlockCommandComment *BCC = getASTNodeAs<BlockCommandComment>(CXC);
if (!BCC || ArgIdx >= BCC->getNumArgs())
return cxstring::createNull();
return createCXString(BCC->getArgText(ArgIdx), /*DupString=*/ false);
}
CXComment clang_BlockCommandComment_getParagraph(CXComment CXC) {
const BlockCommandComment *BCC = getASTNodeAs<BlockCommandComment>(CXC);
if (!BCC)
return createCXComment(NULL, NULL);
return createCXComment(BCC->getParagraph(), CXC.TranslationUnit);
}
CXString clang_ParamCommandComment_getParamName(CXComment CXC) {
const ParamCommandComment *PCC = getASTNodeAs<ParamCommandComment>(CXC);
if (!PCC || !PCC->hasParamName())
return cxstring::createNull();
return createCXString(PCC->getParamNameAsWritten(), /*DupString=*/ false);
}
unsigned clang_ParamCommandComment_isParamIndexValid(CXComment CXC) {
const ParamCommandComment *PCC = getASTNodeAs<ParamCommandComment>(CXC);
if (!PCC)
return false;
return PCC->isParamIndexValid();
}
unsigned clang_ParamCommandComment_getParamIndex(CXComment CXC) {
const ParamCommandComment *PCC = getASTNodeAs<ParamCommandComment>(CXC);
if (!PCC || !PCC->isParamIndexValid())
return ParamCommandComment::InvalidParamIndex;
return PCC->getParamIndex();
}
unsigned clang_ParamCommandComment_isDirectionExplicit(CXComment CXC) {
const ParamCommandComment *PCC = getASTNodeAs<ParamCommandComment>(CXC);
if (!PCC)
return false;
return PCC->isDirectionExplicit();
}
enum CXCommentParamPassDirection clang_ParamCommandComment_getDirection(
CXComment CXC) {
const ParamCommandComment *PCC = getASTNodeAs<ParamCommandComment>(CXC);
if (!PCC)
return CXCommentParamPassDirection_In;
switch (PCC->getDirection()) {
case ParamCommandComment::In:
return CXCommentParamPassDirection_In;
case ParamCommandComment::Out:
return CXCommentParamPassDirection_Out;
case ParamCommandComment::InOut:
return CXCommentParamPassDirection_InOut;
}
llvm_unreachable("unknown ParamCommandComment::PassDirection");
}
CXString clang_TParamCommandComment_getParamName(CXComment CXC) {
const TParamCommandComment *TPCC = getASTNodeAs<TParamCommandComment>(CXC);
if (!TPCC || !TPCC->hasParamName())
return cxstring::createNull();
return createCXString(TPCC->getParamNameAsWritten(), /*DupString=*/ false);
}
unsigned clang_TParamCommandComment_isParamPositionValid(CXComment CXC) {
const TParamCommandComment *TPCC = getASTNodeAs<TParamCommandComment>(CXC);
if (!TPCC)
return false;
return TPCC->isPositionValid();
}
unsigned clang_TParamCommandComment_getDepth(CXComment CXC) {
const TParamCommandComment *TPCC = getASTNodeAs<TParamCommandComment>(CXC);
if (!TPCC || !TPCC->isPositionValid())
return 0;
return TPCC->getDepth();
}
unsigned clang_TParamCommandComment_getIndex(CXComment CXC, unsigned Depth) {
const TParamCommandComment *TPCC = getASTNodeAs<TParamCommandComment>(CXC);
if (!TPCC || !TPCC->isPositionValid() || Depth >= TPCC->getDepth())
return 0;
return TPCC->getIndex(Depth);
}
CXString clang_VerbatimBlockLineComment_getText(CXComment CXC) {
const VerbatimBlockLineComment *VBL =
getASTNodeAs<VerbatimBlockLineComment>(CXC);
if (!VBL)
return cxstring::createNull();
return createCXString(VBL->getText(), /*DupString=*/ false);
}
CXString clang_VerbatimLineComment_getText(CXComment CXC) {
const VerbatimLineComment *VLC = getASTNodeAs<VerbatimLineComment>(CXC);
if (!VLC)
return cxstring::createNull();
return createCXString(VLC->getText(), /*DupString=*/ false);
}
} // end extern "C"
//===----------------------------------------------------------------------===//
// Helpers for converting comment AST to HTML.
//===----------------------------------------------------------------------===//
namespace {
/// This comparison will sort parameters with valid index by index and
/// invalid (unresolved) parameters last.
class ParamCommandCommentCompareIndex {
public:
bool operator()(const ParamCommandComment *LHS,
const ParamCommandComment *RHS) const {
unsigned LHSIndex = UINT_MAX;
unsigned RHSIndex = UINT_MAX;
if (LHS->isParamIndexValid())
LHSIndex = LHS->getParamIndex();
if (RHS->isParamIndexValid())
RHSIndex = RHS->getParamIndex();
return LHSIndex < RHSIndex;
}
};
/// This comparison will sort template parameters in the following order:
/// \li real template parameters (depth = 1) in index order;
/// \li all other names (depth > 1);
/// \li unresolved names.
class TParamCommandCommentComparePosition {
public:
bool operator()(const TParamCommandComment *LHS,
const TParamCommandComment *RHS) const {
// Sort unresolved names last.
if (!LHS->isPositionValid())
return false;
if (!RHS->isPositionValid())
return true;
if (LHS->getDepth() > 1)
return false;
if (RHS->getDepth() > 1)
return true;
// Sort template parameters in index order.
if (LHS->getDepth() == 1 && RHS->getDepth() == 1)
return LHS->getIndex(0) < RHS->getIndex(0);
// Leave all other names in source order.
return true;
}
};
/// Separate parts of a FullComment.
struct FullCommentParts {
/// Take a full comment apart and initialize members accordingly.
FullCommentParts(const FullComment *C,
const CommandTraits &Traits);
const BlockContentComment *Brief;
const BlockContentComment *Headerfile;
const ParagraphComment *FirstParagraph;
const BlockCommandComment *Returns;
SmallVector<const ParamCommandComment *, 8> Params;
SmallVector<const TParamCommandComment *, 4> TParams;
SmallVector<const BlockContentComment *, 8> MiscBlocks;
};
FullCommentParts::FullCommentParts(const FullComment *C,
const CommandTraits &Traits) :
Brief(NULL), Headerfile(NULL), FirstParagraph(NULL), Returns(NULL) {
for (Comment::child_iterator I = C->child_begin(), E = C->child_end();
I != E; ++I) {
const Comment *Child = *I;
if (!Child)
continue;
switch (Child->getCommentKind()) {
case Comment::NoCommentKind:
continue;
case Comment::ParagraphCommentKind: {
const ParagraphComment *PC = cast<ParagraphComment>(Child);
if (PC->isWhitespace())
break;
if (!FirstParagraph)
FirstParagraph = PC;
MiscBlocks.push_back(PC);
break;
}
case Comment::BlockCommandCommentKind: {
const BlockCommandComment *BCC = cast<BlockCommandComment>(Child);
const CommandInfo *Info = Traits.getCommandInfo(BCC->getCommandID());
if (!Brief && Info->IsBriefCommand) {
Brief = BCC;
break;
}
if (!Headerfile && Info->IsHeaderfileCommand) {
Headerfile = BCC;
break;
}
if (!Returns && Info->IsReturnsCommand) {
Returns = BCC;
break;
}
MiscBlocks.push_back(BCC);
break;
}
case Comment::ParamCommandCommentKind: {
const ParamCommandComment *PCC = cast<ParamCommandComment>(Child);
if (!PCC->hasParamName())
break;
if (!PCC->isDirectionExplicit() && !PCC->hasNonWhitespaceParagraph())
break;
Params.push_back(PCC);
break;
}
case Comment::TParamCommandCommentKind: {
const TParamCommandComment *TPCC = cast<TParamCommandComment>(Child);
if (!TPCC->hasParamName())
break;
if (!TPCC->hasNonWhitespaceParagraph())
break;
TParams.push_back(TPCC);
break;
}
case Comment::VerbatimBlockCommentKind:
MiscBlocks.push_back(cast<BlockCommandComment>(Child));
break;
case Comment::VerbatimLineCommentKind: {
const VerbatimLineComment *VLC = cast<VerbatimLineComment>(Child);
const CommandInfo *Info = Traits.getCommandInfo(VLC->getCommandID());
if (!Info->IsDeclarationCommand)
MiscBlocks.push_back(VLC);
break;
}
case Comment::TextCommentKind:
case Comment::InlineCommandCommentKind:
case Comment::HTMLStartTagCommentKind:
case Comment::HTMLEndTagCommentKind:
case Comment::VerbatimBlockLineCommentKind:
case Comment::FullCommentKind:
llvm_unreachable("AST node of this kind can't be a child of "
"a FullComment");
}
}
// Sort params in order they are declared in the function prototype.
// Unresolved parameters are put at the end of the list in the same order
// they were seen in the comment.
std::stable_sort(Params.begin(), Params.end(),
ParamCommandCommentCompareIndex());
std::stable_sort(TParams.begin(), TParams.end(),
TParamCommandCommentComparePosition());
}
void PrintHTMLStartTagComment(const HTMLStartTagComment *C,
llvm::raw_svector_ostream &Result) {
Result << "<" << C->getTagName();
if (C->getNumAttrs() != 0) {
for (unsigned i = 0, e = C->getNumAttrs(); i != e; i++) {
Result << " ";
const HTMLStartTagComment::Attribute &Attr = C->getAttr(i);
Result << Attr.Name;
if (!Attr.Value.empty())
Result << "=\"" << Attr.Value << "\"";
}
}
if (!C->isSelfClosing())
Result << ">";
else
Result << "/>";
}
class CommentASTToHTMLConverter :
public ConstCommentVisitor<CommentASTToHTMLConverter> {
public:
/// \param Str accumulator for HTML.
CommentASTToHTMLConverter(const FullComment *FC,
SmallVectorImpl<char> &Str,
const CommandTraits &Traits) :
FC(FC), Result(Str), Traits(Traits)
{ }
// Inline content.
void visitTextComment(const TextComment *C);
void visitInlineCommandComment(const InlineCommandComment *C);
void visitHTMLStartTagComment(const HTMLStartTagComment *C);
void visitHTMLEndTagComment(const HTMLEndTagComment *C);
// Block content.
void visitParagraphComment(const ParagraphComment *C);
void visitBlockCommandComment(const BlockCommandComment *C);
void visitParamCommandComment(const ParamCommandComment *C);
void visitTParamCommandComment(const TParamCommandComment *C);
void visitVerbatimBlockComment(const VerbatimBlockComment *C);
void visitVerbatimBlockLineComment(const VerbatimBlockLineComment *C);
void visitVerbatimLineComment(const VerbatimLineComment *C);
void visitFullComment(const FullComment *C);
// Helpers.
/// Convert a paragraph that is not a block by itself (an argument to some
/// command).
void visitNonStandaloneParagraphComment(const ParagraphComment *C);
void appendToResultWithHTMLEscaping(StringRef S);
private:
const FullComment *FC;
/// Output stream for HTML.
llvm::raw_svector_ostream Result;
const CommandTraits &Traits;
};
} // end unnamed namespace
void CommentASTToHTMLConverter::visitTextComment(const TextComment *C) {
appendToResultWithHTMLEscaping(C->getText());
}
void CommentASTToHTMLConverter::visitInlineCommandComment(
const InlineCommandComment *C) {
// Nothing to render if no arguments supplied.
if (C->getNumArgs() == 0)
return;
// Nothing to render if argument is empty.
StringRef Arg0 = C->getArgText(0);
if (Arg0.empty())
return;
switch (C->getRenderKind()) {
case InlineCommandComment::RenderNormal:
for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i) {
appendToResultWithHTMLEscaping(C->getArgText(i));
Result << " ";
}
return;
case InlineCommandComment::RenderBold:
assert(C->getNumArgs() == 1);
Result << "<b>";
appendToResultWithHTMLEscaping(Arg0);
Result << "</b>";
return;
case InlineCommandComment::RenderMonospaced:
assert(C->getNumArgs() == 1);
Result << "<tt>";
appendToResultWithHTMLEscaping(Arg0);
Result<< "</tt>";
return;
case InlineCommandComment::RenderEmphasized:
assert(C->getNumArgs() == 1);
Result << "<em>";
appendToResultWithHTMLEscaping(Arg0);
Result << "</em>";
return;
}
}
void CommentASTToHTMLConverter::visitHTMLStartTagComment(
const HTMLStartTagComment *C) {
PrintHTMLStartTagComment(C, Result);
}
void CommentASTToHTMLConverter::visitHTMLEndTagComment(
const HTMLEndTagComment *C) {
Result << "</" << C->getTagName() << ">";
}
void CommentASTToHTMLConverter::visitParagraphComment(
const ParagraphComment *C) {
if (C->isWhitespace())
return;
Result << "<p>";
for (Comment::child_iterator I = C->child_begin(), E = C->child_end();
I != E; ++I) {
visit(*I);
}
Result << "</p>";
}
void CommentASTToHTMLConverter::visitBlockCommandComment(
const BlockCommandComment *C) {
const CommandInfo *Info = Traits.getCommandInfo(C->getCommandID());
if (Info->IsBriefCommand) {
Result << "<p class=\"para-brief\">";
visitNonStandaloneParagraphComment(C->getParagraph());
Result << "</p>";
return;
}
if (Info->IsReturnsCommand) {
Result << "<p class=\"para-returns\">"
"<span class=\"word-returns\">Returns</span> ";
visitNonStandaloneParagraphComment(C->getParagraph());
Result << "</p>";
return;
}
// We don't know anything about this command. Just render the paragraph.
visit(C->getParagraph());
}
void CommentASTToHTMLConverter::visitParamCommandComment(
const ParamCommandComment *C) {
if (C->isParamIndexValid()) {
Result << "<dt class=\"param-name-index-"
<< C->getParamIndex()
<< "\">";
appendToResultWithHTMLEscaping(C->getParamName(FC));
} else {
Result << "<dt class=\"param-name-index-invalid\">";
appendToResultWithHTMLEscaping(C->getParamNameAsWritten());
}
Result << "</dt>";
if (C->isParamIndexValid()) {
Result << "<dd class=\"param-descr-index-"
<< C->getParamIndex()
<< "\">";
} else
Result << "<dd class=\"param-descr-index-invalid\">";
visitNonStandaloneParagraphComment(C->getParagraph());
Result << "</dd>";
}
void CommentASTToHTMLConverter::visitTParamCommandComment(
const TParamCommandComment *C) {
if (C->isPositionValid()) {
if (C->getDepth() == 1)
Result << "<dt class=\"tparam-name-index-"
<< C->getIndex(0)
<< "\">";
else
Result << "<dt class=\"tparam-name-index-other\">";
appendToResultWithHTMLEscaping(C->getParamName(FC));
} else {
Result << "<dt class=\"tparam-name-index-invalid\">";
appendToResultWithHTMLEscaping(C->getParamNameAsWritten());
}
Result << "</dt>";
if (C->isPositionValid()) {
if (C->getDepth() == 1)
Result << "<dd class=\"tparam-descr-index-"
<< C->getIndex(0)
<< "\">";
else
Result << "<dd class=\"tparam-descr-index-other\">";
} else
Result << "<dd class=\"tparam-descr-index-invalid\">";
visitNonStandaloneParagraphComment(C->getParagraph());
Result << "</dd>";
}
void CommentASTToHTMLConverter::visitVerbatimBlockComment(
const VerbatimBlockComment *C) {
unsigned NumLines = C->getNumLines();
if (NumLines == 0)
return;
Result << "<pre>";
for (unsigned i = 0; i != NumLines; ++i) {
appendToResultWithHTMLEscaping(C->getText(i));
if (i + 1 != NumLines)
Result << '\n';
}
Result << "</pre>";
}
void CommentASTToHTMLConverter::visitVerbatimBlockLineComment(
const VerbatimBlockLineComment *C) {
llvm_unreachable("should not see this AST node");
}
void CommentASTToHTMLConverter::visitVerbatimLineComment(
const VerbatimLineComment *C) {
Result << "<pre>";
appendToResultWithHTMLEscaping(C->getText());
Result << "</pre>";
}
void CommentASTToHTMLConverter::visitFullComment(const FullComment *C) {
FullCommentParts Parts(C, Traits);
bool FirstParagraphIsBrief = false;
if (Parts.Headerfile)
visit(Parts.Headerfile);
if (Parts.Brief)
visit(Parts.Brief);
else if (Parts.FirstParagraph) {
Result << "<p class=\"para-brief\">";
visitNonStandaloneParagraphComment(Parts.FirstParagraph);
Result << "</p>";
FirstParagraphIsBrief = true;
}
for (unsigned i = 0, e = Parts.MiscBlocks.size(); i != e; ++i) {
const Comment *C = Parts.MiscBlocks[i];
if (FirstParagraphIsBrief && C == Parts.FirstParagraph)
continue;
visit(C);
}
if (Parts.TParams.size() != 0) {
Result << "<dl>";
for (unsigned i = 0, e = Parts.TParams.size(); i != e; ++i)
visit(Parts.TParams[i]);
Result << "</dl>";
}
if (Parts.Params.size() != 0) {
Result << "<dl>";
for (unsigned i = 0, e = Parts.Params.size(); i != e; ++i)
visit(Parts.Params[i]);
Result << "</dl>";
}
if (Parts.Returns)
visit(Parts.Returns);
Result.flush();
}
void CommentASTToHTMLConverter::visitNonStandaloneParagraphComment(
const ParagraphComment *C) {
if (!C)
return;
for (Comment::child_iterator I = C->child_begin(), E = C->child_end();
I != E; ++I) {
visit(*I);
}
}
void CommentASTToHTMLConverter::appendToResultWithHTMLEscaping(StringRef S) {
for (StringRef::iterator I = S.begin(), E = S.end(); I != E; ++I) {
const char C = *I;
switch (C) {
case '&':
Result << "&amp;";
break;
case '<':
Result << "&lt;";
break;
case '>':
Result << "&gt;";
break;
case '"':
Result << "&quot;";
break;
case '\'':
Result << "&#39;";
break;
case '/':
Result << "&#47;";
break;
default:
Result << C;
break;
}
}
}
extern "C" {
CXString clang_HTMLTagComment_getAsString(CXComment CXC) {
const HTMLTagComment *HTC = getASTNodeAs<HTMLTagComment>(CXC);
if (!HTC)
return cxstring::createNull();
SmallString<128> HTML;
CommentASTToHTMLConverter Converter(0, HTML, getCommandTraits(CXC));
Converter.visit(HTC);
return createCXString(HTML.str(), /* DupString = */ true);
}
CXString clang_FullComment_getAsHTML(CXComment CXC) {
const FullComment *FC = getASTNodeAs<FullComment>(CXC);
if (!FC)
return cxstring::createNull();
SmallString<1024> HTML;
CommentASTToHTMLConverter Converter(FC, HTML, getCommandTraits(CXC));
Converter.visit(FC);
return createCXString(HTML.str(), /* DupString = */ true);
}
} // end extern "C"
namespace {
class CommentASTToXMLConverter :
public ConstCommentVisitor<CommentASTToXMLConverter> {
public:
/// \param Str accumulator for XML.
CommentASTToXMLConverter(const FullComment *FC,
SmallVectorImpl<char> &Str,
const CommandTraits &Traits,
const SourceManager &SM,
SimpleFormatContext &SFC,
unsigned FUID) :
FC(FC), Result(Str), Traits(Traits), SM(SM),
FormatRewriterContext(SFC),
FormatInMemoryUniqueId(FUID) { }
// Inline content.
void visitTextComment(const TextComment *C);
void visitInlineCommandComment(const InlineCommandComment *C);
void visitHTMLStartTagComment(const HTMLStartTagComment *C);
void visitHTMLEndTagComment(const HTMLEndTagComment *C);
// Block content.
void visitParagraphComment(const ParagraphComment *C);
void visitBlockCommandComment(const BlockCommandComment *C);
void visitParamCommandComment(const ParamCommandComment *C);
void visitTParamCommandComment(const TParamCommandComment *C);
void visitVerbatimBlockComment(const VerbatimBlockComment *C);
void visitVerbatimBlockLineComment(const VerbatimBlockLineComment *C);
void visitVerbatimLineComment(const VerbatimLineComment *C);
void visitFullComment(const FullComment *C);
// Helpers.
void appendToResultWithXMLEscaping(StringRef S);
void formatTextOfDeclaration(const DeclInfo *DI,
SmallString<128> &Declaration);
private:
const FullComment *FC;
/// Output stream for XML.
llvm::raw_svector_ostream Result;
const CommandTraits &Traits;
const SourceManager &SM;
SimpleFormatContext &FormatRewriterContext;
unsigned FormatInMemoryUniqueId;
};
void getSourceTextOfDeclaration(const DeclInfo *ThisDecl,
SmallVectorImpl<char> &Str) {
ASTContext &Context = ThisDecl->CurrentDecl->getASTContext();
const LangOptions &LangOpts = Context.getLangOpts();
llvm::raw_svector_ostream OS(Str);
PrintingPolicy PPolicy(LangOpts);
PPolicy.PolishForDeclaration = true;
PPolicy.TerseOutput = true;
ThisDecl->CurrentDecl->print(OS, PPolicy,
/*Indentation*/0, /*PrintInstantiation*/false);
}
void CommentASTToXMLConverter::formatTextOfDeclaration(
const DeclInfo *DI,
SmallString<128> &Declaration) {
// FIXME. formatting API expects null terminated input string.
// There might be more efficient way of doing this.
std::string StringDecl = Declaration.str();
// Formatter specific code.
// Form a unique in memory buffer name.
SmallString<128> filename;
filename += "xmldecl";
filename += llvm::utostr(FormatInMemoryUniqueId);
filename += ".xd";
FileID ID = FormatRewriterContext.createInMemoryFile(filename, StringDecl);
SourceLocation Start =
FormatRewriterContext.Sources.getLocForStartOfFile(ID).getLocWithOffset(0);
unsigned Length = Declaration.size();
std::vector<CharSourceRange>
Ranges(1, CharSourceRange::getCharRange(Start, Start.getLocWithOffset(Length)));
ASTContext &Context = DI->CurrentDecl->getASTContext();
const LangOptions &LangOpts = Context.getLangOpts();
Lexer Lex(ID, FormatRewriterContext.Sources.getBuffer(ID),
FormatRewriterContext.Sources, LangOpts);
tooling::Replacements Replace =
reformat(format::getLLVMStyle(), Lex, FormatRewriterContext.Sources, Ranges);
applyAllReplacements(Replace, FormatRewriterContext.Rewrite);
Declaration = FormatRewriterContext.getRewrittenText(ID);
}
} // end unnamed namespace
void CommentASTToXMLConverter::visitTextComment(const TextComment *C) {
appendToResultWithXMLEscaping(C->getText());
}
void CommentASTToXMLConverter::visitInlineCommandComment(const InlineCommandComment *C) {
// Nothing to render if no arguments supplied.
if (C->getNumArgs() == 0)
return;
// Nothing to render if argument is empty.
StringRef Arg0 = C->getArgText(0);
if (Arg0.empty())
return;
switch (C->getRenderKind()) {
case InlineCommandComment::RenderNormal:
for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i) {
appendToResultWithXMLEscaping(C->getArgText(i));
Result << " ";
}
return;
case InlineCommandComment::RenderBold:
assert(C->getNumArgs() == 1);
Result << "<bold>";
appendToResultWithXMLEscaping(Arg0);
Result << "</bold>";
return;
case InlineCommandComment::RenderMonospaced:
assert(C->getNumArgs() == 1);
Result << "<monospaced>";
appendToResultWithXMLEscaping(Arg0);
Result << "</monospaced>";
return;
case InlineCommandComment::RenderEmphasized:
assert(C->getNumArgs() == 1);
Result << "<emphasized>";
appendToResultWithXMLEscaping(Arg0);
Result << "</emphasized>";
return;
}
}
void CommentASTToXMLConverter::visitHTMLStartTagComment(const HTMLStartTagComment *C) {
Result << "<rawHTML><![CDATA[";
PrintHTMLStartTagComment(C, Result);
Result << "]]></rawHTML>";
}
void CommentASTToXMLConverter::visitHTMLEndTagComment(const HTMLEndTagComment *C) {
Result << "<rawHTML>&lt;/" << C->getTagName() << "&gt;</rawHTML>";
}
void CommentASTToXMLConverter::visitParagraphComment(const ParagraphComment *C) {
if (C->isWhitespace())
return;
Result << "<Para>";
for (Comment::child_iterator I = C->child_begin(), E = C->child_end();
I != E; ++I) {
visit(*I);
}
Result << "</Para>";
}
void CommentASTToXMLConverter::visitBlockCommandComment(const BlockCommandComment *C) {
visit(C->getParagraph());
}
void CommentASTToXMLConverter::visitParamCommandComment(const ParamCommandComment *C) {
Result << "<Parameter><Name>";
appendToResultWithXMLEscaping(C->isParamIndexValid() ? C->getParamName(FC)
: C->getParamNameAsWritten());
Result << "</Name>";
if (C->isParamIndexValid())
Result << "<Index>" << C->getParamIndex() << "</Index>";
Result << "<Direction isExplicit=\"" << C->isDirectionExplicit() << "\">";
switch (C->getDirection()) {
case ParamCommandComment::In:
Result << "in";
break;
case ParamCommandComment::Out:
Result << "out";
break;
case ParamCommandComment::InOut:
Result << "in,out";
break;
}
Result << "</Direction><Discussion>";
visit(C->getParagraph());
Result << "</Discussion></Parameter>";
}
void CommentASTToXMLConverter::visitTParamCommandComment(
const TParamCommandComment *C) {
Result << "<Parameter><Name>";
appendToResultWithXMLEscaping(C->isPositionValid() ? C->getParamName(FC)
: C->getParamNameAsWritten());
Result << "</Name>";
if (C->isPositionValid() && C->getDepth() == 1) {
Result << "<Index>" << C->getIndex(0) << "</Index>";
}
Result << "<Discussion>";
visit(C->getParagraph());
Result << "</Discussion></Parameter>";
}
void CommentASTToXMLConverter::visitVerbatimBlockComment(
const VerbatimBlockComment *C) {
unsigned NumLines = C->getNumLines();
if (NumLines == 0)
return;
Result << llvm::StringSwitch<const char *>(C->getCommandName(Traits))
.Case("code", "<Verbatim xml:space=\"preserve\" kind=\"code\">")
.Default("<Verbatim xml:space=\"preserve\" kind=\"verbatim\">");
for (unsigned i = 0; i != NumLines; ++i) {
appendToResultWithXMLEscaping(C->getText(i));
if (i + 1 != NumLines)
Result << '\n';
}
Result << "</Verbatim>";
}
void CommentASTToXMLConverter::visitVerbatimBlockLineComment(
const VerbatimBlockLineComment *C) {
llvm_unreachable("should not see this AST node");
}
void CommentASTToXMLConverter::visitVerbatimLineComment(
const VerbatimLineComment *C) {
Result << "<Verbatim xml:space=\"preserve\" kind=\"verbatim\">";
appendToResultWithXMLEscaping(C->getText());
Result << "</Verbatim>";
}
void CommentASTToXMLConverter::visitFullComment(const FullComment *C) {
FullCommentParts Parts(C, Traits);
const DeclInfo *DI = C->getDeclInfo();
StringRef RootEndTag;
if (DI) {
switch (DI->getKind()) {
case DeclInfo::OtherKind:
RootEndTag = "</Other>";
Result << "<Other";
break;
case DeclInfo::FunctionKind:
RootEndTag = "</Function>";
Result << "<Function";
switch (DI->TemplateKind) {
case DeclInfo::NotTemplate:
break;
case DeclInfo::Template:
Result << " templateKind=\"template\"";
break;
case DeclInfo::TemplateSpecialization:
Result << " templateKind=\"specialization\"";
break;
case DeclInfo::TemplatePartialSpecialization:
llvm_unreachable("partial specializations of functions "
"are not allowed in C++");
}
if (DI->IsInstanceMethod)
Result << " isInstanceMethod=\"1\"";
if (DI->IsClassMethod)
Result << " isClassMethod=\"1\"";
break;
case DeclInfo::ClassKind:
RootEndTag = "</Class>";
Result << "<Class";
switch (DI->TemplateKind) {
case DeclInfo::NotTemplate:
break;
case DeclInfo::Template:
Result << " templateKind=\"template\"";
break;
case DeclInfo::TemplateSpecialization:
Result << " templateKind=\"specialization\"";
break;
case DeclInfo::TemplatePartialSpecialization:
Result << " templateKind=\"partialSpecialization\"";
break;
}
break;
case DeclInfo::VariableKind:
RootEndTag = "</Variable>";
Result << "<Variable";
break;
case DeclInfo::NamespaceKind:
RootEndTag = "</Namespace>";
Result << "<Namespace";
break;
case DeclInfo::TypedefKind:
RootEndTag = "</Typedef>";
Result << "<Typedef";
break;
case DeclInfo::EnumKind:
RootEndTag = "</Enum>";
Result << "<Enum";
break;
}
{
// Print line and column number.
SourceLocation Loc = DI->CurrentDecl->getLocation();
std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
FileID FID = LocInfo.first;
unsigned FileOffset = LocInfo.second;
if (!FID.isInvalid()) {
if (const FileEntry *FE = SM.getFileEntryForID(FID)) {
Result << " file=\"";
appendToResultWithXMLEscaping(FE->getName());
Result << "\"";
}
Result << " line=\"" << SM.getLineNumber(FID, FileOffset)
<< "\" column=\"" << SM.getColumnNumber(FID, FileOffset)
<< "\"";
}
}
// Finish the root tag.
Result << ">";
bool FoundName = false;
if (const NamedDecl *ND = dyn_cast<NamedDecl>(DI->CommentDecl)) {
if (DeclarationName DeclName = ND->getDeclName()) {
Result << "<Name>";
std::string Name = DeclName.getAsString();
appendToResultWithXMLEscaping(Name);
FoundName = true;
Result << "</Name>";
}
}
if (!FoundName)
Result << "<Name>&lt;anonymous&gt;</Name>";
{
// Print USR.
SmallString<128> USR;
cxcursor::getDeclCursorUSR(DI->CommentDecl, USR);
if (!USR.empty()) {
Result << "<USR>";
appendToResultWithXMLEscaping(USR);
Result << "</USR>";
}
}
} else {
// No DeclInfo -- just emit some root tag and name tag.
RootEndTag = "</Other>";
Result << "<Other><Name>unknown</Name>";
}
if (Parts.Headerfile) {
Result << "<Headerfile>";
visit(Parts.Headerfile);
Result << "</Headerfile>";
}
{
// Pretty-print the declaration.
Result << "<Declaration>";
SmallString<128> Declaration;
getSourceTextOfDeclaration(DI, Declaration);
formatTextOfDeclaration(DI, Declaration);
appendToResultWithXMLEscaping(Declaration);
Result << "</Declaration>";
}
bool FirstParagraphIsBrief = false;
if (Parts.Brief) {
Result << "<Abstract>";
visit(Parts.Brief);
Result << "</Abstract>";
} else if (Parts.FirstParagraph) {
Result << "<Abstract>";
visit(Parts.FirstParagraph);
Result << "</Abstract>";
FirstParagraphIsBrief = true;
}
if (Parts.TParams.size() != 0) {
Result << "<TemplateParameters>";
for (unsigned i = 0, e = Parts.TParams.size(); i != e; ++i)
visit(Parts.TParams[i]);
Result << "</TemplateParameters>";
}
if (Parts.Params.size() != 0) {
Result << "<Parameters>";
for (unsigned i = 0, e = Parts.Params.size(); i != e; ++i)
visit(Parts.Params[i]);
Result << "</Parameters>";
}
if (Parts.Returns) {
Result << "<ResultDiscussion>";
visit(Parts.Returns);
Result << "</ResultDiscussion>";
}
if (DI->CommentDecl->hasAttrs()) {
const AttrVec &Attrs = DI->CommentDecl->getAttrs();
for (unsigned i = 0, e = Attrs.size(); i != e; i++) {
const AvailabilityAttr *AA = dyn_cast<AvailabilityAttr>(Attrs[i]);
if (!AA) {
if (const DeprecatedAttr *DA = dyn_cast<DeprecatedAttr>(Attrs[i])) {
if (DA->getMessage().empty())
Result << "<Deprecated/>";
else {
Result << "<Deprecated>";
appendToResultWithXMLEscaping(DA->getMessage());
Result << "</Deprecated>";
}
}
else if (const UnavailableAttr *UA = dyn_cast<UnavailableAttr>(Attrs[i])) {
if (UA->getMessage().empty())
Result << "<Unavailable/>";
else {
Result << "<Unavailable>";
appendToResultWithXMLEscaping(UA->getMessage());
Result << "</Unavailable>";
}
}
continue;
}
// 'availability' attribute.
Result << "<Availability";
StringRef Distribution;
if (AA->getPlatform()) {
Distribution = AvailabilityAttr::getPrettyPlatformName(
AA->getPlatform()->getName());
if (Distribution.empty())
Distribution = AA->getPlatform()->getName();
}
Result << " distribution=\"" << Distribution << "\">";
VersionTuple IntroducedInVersion = AA->getIntroduced();
if (!IntroducedInVersion.empty()) {
Result << "<IntroducedInVersion>"
<< IntroducedInVersion.getAsString()
<< "</IntroducedInVersion>";
}
VersionTuple DeprecatedInVersion = AA->getDeprecated();
if (!DeprecatedInVersion.empty()) {
Result << "<DeprecatedInVersion>"
<< DeprecatedInVersion.getAsString()
<< "</DeprecatedInVersion>";
}
VersionTuple RemovedAfterVersion = AA->getObsoleted();
if (!RemovedAfterVersion.empty()) {
Result << "<RemovedAfterVersion>"
<< RemovedAfterVersion.getAsString()
<< "</RemovedAfterVersion>";
}
StringRef DeprecationSummary = AA->getMessage();
if (!DeprecationSummary.empty()) {
Result << "<DeprecationSummary>";
appendToResultWithXMLEscaping(DeprecationSummary);
Result << "</DeprecationSummary>";
}
if (AA->getUnavailable())
Result << "<Unavailable/>";
Result << "</Availability>";
}
}
{
bool StartTagEmitted = false;
for (unsigned i = 0, e = Parts.MiscBlocks.size(); i != e; ++i) {
const Comment *C = Parts.MiscBlocks[i];
if (FirstParagraphIsBrief && C == Parts.FirstParagraph)
continue;
if (!StartTagEmitted) {
Result << "<Discussion>";
StartTagEmitted = true;
}
visit(C);
}
if (StartTagEmitted)
Result << "</Discussion>";
}
Result << RootEndTag;
Result.flush();
}
void CommentASTToXMLConverter::appendToResultWithXMLEscaping(StringRef S) {
for (StringRef::iterator I = S.begin(), E = S.end(); I != E; ++I) {
const char C = *I;
switch (C) {
case '&':
Result << "&amp;";
break;
case '<':
Result << "&lt;";
break;
case '>':
Result << "&gt;";
break;
case '"':
Result << "&quot;";
break;
case '\'':
Result << "&apos;";
break;
default:
Result << C;
break;
}
}
}
extern "C" {
CXString clang_FullComment_getAsXML(CXComment CXC) {
const FullComment *FC = getASTNodeAs<FullComment>(CXC);
if (!FC)
return cxstring::createNull();
ASTContext &Context = FC->getDeclInfo()->CurrentDecl->getASTContext();
CXTranslationUnit TU = CXC.TranslationUnit;
SourceManager &SM = cxtu::getASTUnit(TU)->getSourceManager();
if (!TU->FormatContext) {
TU->FormatContext = new SimpleFormatContext(Context.getLangOpts());
} else if ((TU->FormatInMemoryUniqueId % 1000) == 0) {
// Delete after some number of iterators, so the buffers don't grow
// too large.
delete TU->FormatContext;
TU->FormatContext = new SimpleFormatContext(Context.getLangOpts());
}
SmallString<1024> XML;
CommentASTToXMLConverter Converter(FC, XML, getCommandTraits(CXC), SM,
*TU->FormatContext,
TU->FormatInMemoryUniqueId++);
Converter.visit(FC);
return createCXString(XML.str(), /* DupString = */ true);
}
} // end extern "C"
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