llvm/mlir/lib/Query/Matcher/Parser.h

//===--- Parser.h - Matcher expression 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
//
//===----------------------------------------------------------------------===//
//
// Simple matcher expression parser.
//
// This file contains the Parser class, which is responsible for parsing
// expressions in a specific format: matcherName(Arg0, Arg1, ..., ArgN). The
// parser can also interpret simple types, like strings.
//
// The actual processing of the matchers is handled by a Sema object that is
// provided to the parser.
//
// The grammar for the supported expressions is as follows:
// <Expression>        := <StringLiteral> | <MatcherExpression>
// <StringLiteral>     := "quoted string"
// <MatcherExpression> := <MatcherName>(<ArgumentList>)
// <MatcherName>       := [a-zA-Z]+
// <ArgumentList>      := <Expression> | <Expression>,<ArgumentList>
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_TOOLS_MLIRQUERY_MATCHER_PARSER_H
#define MLIR_TOOLS_MLIRQUERY_MATCHER_PARSER_H

#include "Diagnostics.h"
#include "RegistryManager.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include <memory>
#include <vector>

namespace mlir::query::matcher::internal {

// Matcher expression parser.
class Parser { … };

} // namespace mlir::query::matcher::internal

#endif // MLIR_TOOLS_MLIRQUERY_MATCHER_PARSER_H