QueryParser.h

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//===--- QueryParser.h - ----------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
 
#ifndef MLIR_TOOLS_MLIRQUERY_QUERYPARSER_H
#define MLIR_TOOLS_MLIRQUERY_QUERYPARSER_H
 
#include "Matcher/Parser.h"
#include "mlir/Query/Query.h"
#include "mlir/Query/QuerySession.h"
 
#include "llvm/ADT/StringRef.h"
#include "llvm/LineEditor/LineEditor.h"
 
namespace mlir::query {
 
class QuerySession;
 
class QueryParser {
public:
  // Parse line as a query and return a QueryRef representing the query, which
  // may be an InvalidQuery.
  static QueryRef parse(llvm::StringRef line, const QuerySession &qs);
 
  static std::vector<llvm::LineEditor::Completion>
  complete(llvm::StringRef line, size_t pos, const QuerySession &qs);
 
private:
  QueryParser(llvm::StringRef line, const QuerySession &qs)
      : line(line), completionPos(nullptr), qs(qs) {}
 
  llvm::StringRef lexWord();
 
  template <typename T>
  struct LexOrCompleteWord;
 
  QueryRef completeMatcherExpression();
 
  QueryRef endQuery(QueryRef queryRef);
 
  // Parse [begin, end) and returns a reference to the parsed query object,
  // which may be an InvalidQuery if a parse error occurs.
  QueryRef doParse();
 
  llvm::StringRef line;
 
  const char *completionPos;
  std::vector<llvm::LineEditor::Completion> completions;
 
  const QuerySession &qs;
};
 
} // namespace mlir::query
 
#endif // MLIR_TOOLS_MLIRQUERY_QUERYPARSER_H