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//===--- CommentParser.h - Doxygen comment parser ---------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the Doxygen comment parser.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_COMMENTPARSER_H
#define LLVM_CLANG_AST_COMMENTPARSER_H
#include "clang/AST/Comment.h"
#include "clang/AST/CommentLexer.h"
#include "clang/AST/CommentSema.h"
#include "clang/Basic/Diagnostic.h"
#include "llvm/Support/Allocator.h"
namespace clang {
class SourceManager;
namespace comments {
class CommandTraits;
/// Doxygen comment parser.
class Parser {
Parser(const Parser &) = delete;
void operator=(const Parser &) = delete;
friend class TextTokenRetokenizer;
Lexer &L;
Sema &S;
/// Allocator for anything that goes into AST nodes.
llvm::BumpPtrAllocator &Allocator;
/// Source manager for the comment being parsed.
const SourceManager &SourceMgr;
DiagnosticsEngine &Diags;
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) {
return Diags.Report(Loc, DiagID);
}
const CommandTraits &Traits;
/// Current lookahead token. We can safely assume that all tokens are from
/// a single source file.
Token Tok;
/// A stack of additional lookahead tokens.
SmallVector<Token, 8> MoreLATokens;
void consumeToken() {
if (MoreLATokens.empty())
L.lex(Tok);
else
Tok = MoreLATokens.pop_back_val();
}
void putBack(const Token &OldTok) {
MoreLATokens.push_back(Tok);
Tok = OldTok;
}
void putBack(ArrayRef<Token> Toks) {
if (Toks.empty())
return;
MoreLATokens.push_back(Tok);
MoreLATokens.append(Toks.rbegin(), std::prev(Toks.rend()));
Tok = Toks[0];
}
bool isTokBlockCommand() {
return (Tok.is(tok::backslash_command) || Tok.is(tok::at_command)) &&
Traits.getCommandInfo(Tok.getCommandID())->IsBlockCommand;
}
public:
Parser(Lexer &L, Sema &S, llvm::BumpPtrAllocator &Allocator,
const SourceManager &SourceMgr, DiagnosticsEngine &Diags,
const CommandTraits &Traits);
/// Parse arguments for \\param command.
void parseParamCommandArgs(ParamCommandComment *PC,
TextTokenRetokenizer &Retokenizer);
/// Parse arguments for \\tparam command.
void parseTParamCommandArgs(TParamCommandComment *TPC,
TextTokenRetokenizer &Retokenizer);
ArrayRef<Comment::Argument>
parseCommandArgs(TextTokenRetokenizer &Retokenizer, unsigned NumArgs);
BlockCommandComment *parseBlockCommand();
InlineCommandComment *parseInlineCommand();
HTMLStartTagComment *parseHTMLStartTag();
HTMLEndTagComment *parseHTMLEndTag();
BlockContentComment *parseParagraphOrBlockCommand();
VerbatimBlockComment *parseVerbatimBlock();
VerbatimLineComment *parseVerbatimLine();
BlockContentComment *parseBlockContent();
FullComment *parseFullComment();
};
} // end namespace comments
} // end namespace clang
#endif
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