https://github.com/hdoc updated https://github.com/llvm/llvm-project/pull/91100
>From 2b1845352b0ea27f027c94e406cd32ae8a1e94d1 Mon Sep 17 00:00:00 2001
From: hdoc <git...@hdoc.io>
Date: Sat, 4 May 2024 18:50:16 -0700
Subject: [PATCH] Support for parsing headers in Doxygen \par commands
---
.../include/clang/AST/CommentCommandTraits.h | 4 +
clang/include/clang/AST/CommentCommands.td | 3 +-
clang/include/clang/AST/CommentParser.h | 4 +-
clang/lib/AST/CommentParser.cpp | 77 ++++++++++
clang/test/Index/comment-misc-tags.m | 8 +-
clang/unittests/AST/CommentParser.cpp | 139 +++++++++++++++++-
.../ClangCommentCommandInfoEmitter.cpp | 1 +
7 files changed, 228 insertions(+), 8 deletions(-)
diff --git a/clang/include/clang/AST/CommentCommandTraits.h
b/clang/include/clang/AST/CommentCommandTraits.h
index 0c3254d84eb000..78c484fff3aede 100644
--- a/clang/include/clang/AST/CommentCommandTraits.h
+++ b/clang/include/clang/AST/CommentCommandTraits.h
@@ -88,6 +88,10 @@ struct CommandInfo {
LLVM_PREFERRED_TYPE(bool)
unsigned IsHeaderfileCommand : 1;
+ /// True if this is a \\par command.
+ LLVM_PREFERRED_TYPE(bool)
+ unsigned IsParCommand : 1;
+
/// True if we don't want to warn about this command being passed an empty
/// paragraph. Meaningful only for block commands.
LLVM_PREFERRED_TYPE(bool)
diff --git a/clang/include/clang/AST/CommentCommands.td
b/clang/include/clang/AST/CommentCommands.td
index e839031752cdd8..5fd687b0d8991f 100644
--- a/clang/include/clang/AST/CommentCommands.td
+++ b/clang/include/clang/AST/CommentCommands.td
@@ -18,6 +18,7 @@ class Command<string name> {
bit IsThrowsCommand = 0;
bit IsDeprecatedCommand = 0;
bit IsHeaderfileCommand = 0;
+ bit IsParCommand = 0;
bit IsEmptyParagraphAllowed = 0;
@@ -156,7 +157,7 @@ def Date : BlockCommand<"date">;
def Invariant : BlockCommand<"invariant">;
def Li : BlockCommand<"li">;
def Note : BlockCommand<"note">;
-def Par : BlockCommand<"par">;
+def Par : BlockCommand<"par"> { let IsParCommand = 1; let NumArgs = 1; }
def Post : BlockCommand<"post">;
def Pre : BlockCommand<"pre">;
def Remark : BlockCommand<"remark">;
diff --git a/clang/include/clang/AST/CommentParser.h
b/clang/include/clang/AST/CommentParser.h
index e11e818b1af0a1..b5f1c6c19f0ce7 100644
--- a/clang/include/clang/AST/CommentParser.h
+++ b/clang/include/clang/AST/CommentParser.h
@@ -100,6 +100,9 @@ class Parser {
ArrayRef<Comment::Argument>
parseCommandArgs(TextTokenRetokenizer &Retokenizer, unsigned NumArgs);
+ ArrayRef<Comment::Argument>
+ parseParCommandArgs(TextTokenRetokenizer &Retokenizer, unsigned NumArgs);
+
BlockCommandComment *parseBlockCommand();
InlineCommandComment *parseInlineCommand();
@@ -118,4 +121,3 @@ class Parser {
} // end namespace clang
#endif
-
diff --git a/clang/lib/AST/CommentParser.cpp b/clang/lib/AST/CommentParser.cpp
index 8adfd85d0160c3..54760f5ba932eb 100644
--- a/clang/lib/AST/CommentParser.cpp
+++ b/clang/lib/AST/CommentParser.cpp
@@ -149,6 +149,63 @@ class TextTokenRetokenizer {
addToken();
}
+ /// Check if this line starts with @par or \par
+ bool startsWithParCommand() {
+ unsigned Offset = 1;
+
+ /// Skip all whitespace characters at the beginning.
+ /// This needs to backtrack because Pos has already advanced past the
+ /// actual \par or @par command by the time this function is called.
+ while (isWhitespace(*(Pos.BufferPtr - Offset)))
+ Offset++;
+
+ /// Check if next four characters are \par or @par
+ llvm::StringRef LineStart(Pos.BufferPtr - 5, 4);
+ return LineStart.starts_with("\\par") || LineStart.starts_with("@par");
+ }
+
+ /// Extract a par command argument-header.
+ bool lexParHeading(Token &Tok) {
+ if (isEnd())
+ return false;
+
+ Position SavedPos = Pos;
+
+ consumeWhitespace();
+ SmallString<32> WordText;
+ const char *WordBegin = Pos.BufferPtr;
+ SourceLocation Loc = getSourceLocation();
+
+ if (!startsWithParCommand())
+ return false;
+
+ // Read until the end of this token, which is effectively the end of the
+ // line This gets us the content of the par header, if there is one.
+ while (!isEnd()) {
+ WordText.push_back(peek());
+ if (Pos.BufferPtr + 1 == Pos.BufferEnd) {
+ consumeChar();
+ break;
+ } else {
+ consumeChar();
+ }
+ }
+
+ const unsigned Length = WordText.size();
+ if (Length == 0) {
+ Pos = SavedPos;
+ return false;
+ }
+
+ char *TextPtr = Allocator.Allocate<char>(Length + 1);
+
+ memcpy(TextPtr, WordText.c_str(), Length + 1);
+ StringRef Text = StringRef(TextPtr, Length);
+
+ formTokenWithChars(Tok, Loc, WordBegin, Length, Text);
+ return true;
+ }
+
/// Extract a word -- sequence of non-whitespace characters.
bool lexWord(Token &Tok) {
if (isEnd())
@@ -304,6 +361,23 @@ Parser::parseCommandArgs(TextTokenRetokenizer
&Retokenizer, unsigned NumArgs) {
return llvm::ArrayRef(Args, ParsedArgs);
}
+ArrayRef<Comment::Argument>
+Parser::parseParCommandArgs(TextTokenRetokenizer &Retokenizer,
+ unsigned NumArgs) {
+ auto *Args = new (Allocator.Allocate<Comment::Argument>(NumArgs))
+ Comment::Argument[NumArgs];
+ unsigned ParsedArgs = 0;
+ Token Arg;
+
+ while (ParsedArgs < NumArgs && Retokenizer.lexParHeading(Arg)) {
+ Args[ParsedArgs] = Comment::Argument{
+ SourceRange(Arg.getLocation(), Arg.getEndLocation()), Arg.getText()};
+ ParsedArgs++;
+ }
+
+ return llvm::ArrayRef(Args, ParsedArgs);
+}
+
BlockCommandComment *Parser::parseBlockCommand() {
assert(Tok.is(tok::backslash_command) || Tok.is(tok::at_command));
@@ -356,6 +430,9 @@ BlockCommandComment *Parser::parseBlockCommand() {
parseParamCommandArgs(PC, Retokenizer);
else if (TPC)
parseTParamCommandArgs(TPC, Retokenizer);
+ else if (Info->IsParCommand)
+ S.actOnBlockCommandArgs(BC,
+ parseParCommandArgs(Retokenizer, Info->NumArgs));
else
S.actOnBlockCommandArgs(BC, parseCommandArgs(Retokenizer,
Info->NumArgs));
diff --git a/clang/test/Index/comment-misc-tags.m
b/clang/test/Index/comment-misc-tags.m
index 47ee9d9aa392ab..6d018dbfcf193d 100644
--- a/clang/test/Index/comment-misc-tags.m
+++ b/clang/test/Index/comment-misc-tags.m
@@ -91,18 +91,16 @@ @interface IOCommandGate
struct Test {int filler;};
-// CHECK: (CXComment_BlockCommand CommandName=[par]
+// CHECK: (CXComment_BlockCommand CommandName=[par] Arg[0]=User defined
paragraph:
// CHECK-NEXT: (CXComment_Paragraph
-// CHECK-NEXT: (CXComment_Text Text=[ User defined paragraph:]
HasTrailingNewline)
// CHECK-NEXT: (CXComment_Text Text=[ Contents of the paragraph.])))
// CHECK: (CXComment_BlockCommand CommandName=[par]
// CHECK-NEXT: (CXComment_Paragraph
-// CHECK-NEXT: (CXComment_Text Text=[ New paragraph under the same
heading.])))
+// CHECK-NEXT: (CXComment_Text Text=[New paragraph under the same
heading.])))
// CHECK: (CXComment_BlockCommand CommandName=[note]
// CHECK-NEXT: (CXComment_Paragraph
// CHECK-NEXT: (CXComment_Text Text=[ This note consists of two
paragraphs.] HasTrailingNewline)
// CHECK-NEXT: (CXComment_Text Text=[ This is the first paragraph.])))
// CHECK: (CXComment_BlockCommand CommandName=[par]
// CHECK-NEXT: (CXComment_Paragraph
-// CHECK-NEXT: (CXComment_Text Text=[ And this is the second paragraph.])))
-
+// CHECK-NEXT: (CXComment_Text Text=[And this is the second paragraph.])))
diff --git a/clang/unittests/AST/CommentParser.cpp
b/clang/unittests/AST/CommentParser.cpp
index c3479672ae2a3c..d9150a848fcaf3 100644
--- a/clang/unittests/AST/CommentParser.cpp
+++ b/clang/unittests/AST/CommentParser.cpp
@@ -1427,8 +1427,145 @@ TEST_F(CommentParserTest, Deprecated) {
}
}
+TEST_F(CommentParserTest, ParCommandHasArg1) {
+ const char *Sources[] = {
+ "/// @par Paragraph header:", "/// @par Paragraph header:\n",
+ "/// @par Paragraph header:\r\n", "/// @par Paragraph header:\n\r",
+ "/** @par Paragraph header:*/",
+ };
+
+ for (size_t i = 0, e = std::size(Sources); i != e; i++) {
+ FullComment *FC = parseString(Sources[i]);
+ ASSERT_TRUE(HasChildCount(FC, 2));
+
+ ASSERT_TRUE(HasParagraphCommentAt(FC, 0, " "));
+ {
+ BlockCommandComment *BCC;
+ ParagraphComment *PC;
+ ASSERT_TRUE(HasBlockCommandAt(FC, Traits, 1, BCC, "par", PC));
+ ASSERT_TRUE(HasChildCount(PC, 0));
+ ASSERT_TRUE(BCC->getNumArgs() == 1);
+ ASSERT_TRUE(BCC->getArgText(0) == "Paragraph header:");
+ }
+ }
+}
+
+TEST_F(CommentParserTest, ParCommandHasArg2) {
+ const char *Sources[] = {
+ "/// @par Paragraph header: ", "/// @par Paragraph header: \n",
+ "/// @par Paragraph header: \r\n", "/// @par Paragraph header: \n\r",
+ "/** @par Paragraph header: */",
+ };
+
+ for (size_t i = 0, e = std::size(Sources); i != e; i++) {
+ FullComment *FC = parseString(Sources[i]);
+ ASSERT_TRUE(HasChildCount(FC, 2));
+
+ ASSERT_TRUE(HasParagraphCommentAt(FC, 0, " "));
+ {
+ BlockCommandComment *BCC;
+ ParagraphComment *PC;
+ ASSERT_TRUE(HasBlockCommandAt(FC, Traits, 1, BCC, "par", PC));
+ ASSERT_TRUE(HasChildCount(PC, 0));
+ ASSERT_TRUE(BCC->getNumArgs() == 1);
+ ASSERT_TRUE(BCC->getArgText(0) == "Paragraph header: ");
+ }
+ }
+}
+
+TEST_F(CommentParserTest, ParCommandHasArg3) {
+ const char *Sources[] = {
+ ("/// @par Paragraph header:\n"
+ "/// Paragraph body"),
+ ("/// @par Paragraph header:\r\n"
+ "/// Paragraph body"),
+ ("/// @par Paragraph header:\n\r"
+ "/// Paragraph body"),
+ };
+
+ for (size_t i = 0, e = std::size(Sources); i != e; i++) {
+ FullComment *FC = parseString(Sources[i]);
+ ASSERT_TRUE(HasChildCount(FC, 2));
+
+ ASSERT_TRUE(HasParagraphCommentAt(FC, 0, " "));
+ {
+ BlockCommandComment *BCC;
+ ParagraphComment *PC;
+ TextComment *TC;
+ ASSERT_TRUE(HasBlockCommandAt(FC, Traits, 1, BCC, "par", PC));
+ ASSERT_TRUE(HasChildCount(PC, 1));
+ ASSERT_TRUE(BCC->getNumArgs() == 1);
+ ASSERT_TRUE(BCC->getArgText(0) == "Paragraph header:");
+ ASSERT_TRUE(GetChildAt(PC, 0, TC));
+ ASSERT_TRUE(TC->getText() == " Paragraph body");
+ }
+ }
+}
+
+TEST_F(CommentParserTest, ParCommandHasArg4) {
+ const char *Sources[] = {
+ ("/// @par Paragraph header:\n"
+ "/// Paragraph body1\n"
+ "/// Paragraph body2"),
+ ("/// @par Paragraph header:\r\n"
+ "/// Paragraph body1\n"
+ "/// Paragraph body2"),
+ ("/// @par Paragraph header:\n\r"
+ "/// Paragraph body1\n"
+ "/// Paragraph body2"),
+ };
+
+ for (size_t i = 0, e = std::size(Sources); i != e; i++) {
+ FullComment *FC = parseString(Sources[i]);
+ ASSERT_TRUE(HasChildCount(FC, 2));
+
+ ASSERT_TRUE(HasParagraphCommentAt(FC, 0, " "));
+ {
+ BlockCommandComment *BCC;
+ ParagraphComment *PC;
+ TextComment *TC;
+ ASSERT_TRUE(HasBlockCommandAt(FC, Traits, 1, BCC, "par", PC));
+ ASSERT_TRUE(HasChildCount(PC, 2));
+ ASSERT_TRUE(BCC->getNumArgs() == 1);
+ ASSERT_TRUE(BCC->getArgText(0) == "Paragraph header:");
+ ASSERT_TRUE(GetChildAt(PC, 0, TC));
+ ASSERT_TRUE(TC->getText() == " Paragraph body1");
+ ASSERT_TRUE(GetChildAt(PC, 1, TC));
+ ASSERT_TRUE(TC->getText() == " Paragraph body2");
+ }
+ }
+}
+
+TEST_F(CommentParserTest, ParCommandHasArg5) {
+ const char *Sources[] = {
+ ("/// @par \n"
+ "/// Paragraphs with no text before newline have no heading"),
+ ("/// @par \r\n"
+ "/// Paragraphs with no text before newline have no heading"),
+ ("/// @par \n\r"
+ "/// Paragraphs with no text before newline have no heading"),
+ };
+
+ for (size_t i = 0, e = std::size(Sources); i != e; i++) {
+ FullComment *FC = parseString(Sources[i]);
+ ASSERT_TRUE(HasChildCount(FC, 2));
+
+ ASSERT_TRUE(HasParagraphCommentAt(FC, 0, " "));
+ {
+ BlockCommandComment *BCC;
+ ParagraphComment *PC;
+ TextComment *TC;
+ ASSERT_TRUE(HasBlockCommandAt(FC, Traits, 1, BCC, "par", PC));
+ ASSERT_TRUE(HasChildCount(PC, 1));
+ ASSERT_TRUE(BCC->getNumArgs() == 0);
+ ASSERT_TRUE(GetChildAt(PC, 0, TC));
+ ASSERT_TRUE(TC->getText() ==
+ "Paragraphs with no text before newline have no heading");
+ }
+ }
+}
+
} // unnamed namespace
} // end namespace comments
} // end namespace clang
-
diff --git a/clang/utils/TableGen/ClangCommentCommandInfoEmitter.cpp
b/clang/utils/TableGen/ClangCommentCommandInfoEmitter.cpp
index a113b02e19995d..07b26dc2f6b8be 100644
--- a/clang/utils/TableGen/ClangCommentCommandInfoEmitter.cpp
+++ b/clang/utils/TableGen/ClangCommentCommandInfoEmitter.cpp
@@ -44,6 +44,7 @@ void clang::EmitClangCommentCommandInfo(RecordKeeper &Records,
<< Tag.getValueAsBit("IsThrowsCommand") << ", "
<< Tag.getValueAsBit("IsDeprecatedCommand") << ", "
<< Tag.getValueAsBit("IsHeaderfileCommand") << ", "
+ << Tag.getValueAsBit("IsParCommand") << ", "
<< Tag.getValueAsBit("IsEmptyParagraphAllowed") << ", "
<< Tag.getValueAsBit("IsVerbatimBlockCommand") << ", "
<< Tag.getValueAsBit("IsVerbatimBlockEndCommand") << ", "
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