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//===--- QueryParser.h - clang-query ----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
#include "Query.h"
#include "QuerySession.h"
#include "llvm/LineEditor/LineEditor.h"
#include <cstddef>
namespace clang {
namespace query {
class QuerySession;
class QueryParser {
public:
/// Parse \a Line as a query.
///
/// \return A QueryRef representing the query, which may be an InvalidQuery.
static QueryRef parse(StringRef Line, const QuerySession &QS);
/// Compute a list of completions for \a Line assuming a cursor at
/// \param Pos characters past the start of \a Line, ordered from most
/// likely to least likely.
///
/// \return A vector of completions for \a Line.
static std::vector<llvm::LineEditor::Completion>
complete(StringRef Line, size_t Pos, const QuerySession &QS);
private:
QueryParser(StringRef Line, const QuerySession &QS)
: Begin(Line.begin()), End(Line.end()), CompletionPos(nullptr), QS(QS) {}
StringRef lexWord();
template <typename T> struct LexOrCompleteWord;
QueryRef parseSetBool(bool QuerySession::*Var);
QueryRef parseSetOutputKind();
QueryRef completeMatcherExpression();
QueryRef endQuery(QueryRef Q);
/// \brief Parse [\p Begin,\p End).
///
/// \return A reference to the parsed query object, which may be an
/// \c InvalidQuery if a parse error occurs.
QueryRef doParse();
const char *Begin;
const char *End;
const char *CompletionPos;
std::vector<llvm::LineEditor::Completion> Completions;
const QuerySession &QS;
};
} // namespace query
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
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