llvm/mlir/examples/toy/Ch7/include/toy/Parser.h

//===- Parser.h - Toy Language Parser -------------------------------------===//
//
// 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 implements the parser for the Toy language. It processes the Token
// provided by the Lexer and returns an AST.
//
//===----------------------------------------------------------------------===//

#ifndef TOY_PARSER_H
#define TOY_PARSER_H

#include "toy/AST.h"
#include "toy/Lexer.h"

#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/raw_ostream.h"

#include <map>
#include <utility>
#include <vector>
#include <optional>

namespace toy {

/// This is a simple recursive parser for the Toy language. It produces a well
/// formed AST from a stream of Token supplied by the Lexer. No semantic checks
/// or symbol resolution is performed. For example, variables are referenced by
/// string and the code could reference an undeclared variable and the parsing
/// succeeds.
class Parser { … };

} // namespace toy

#endif // TOY_PARSER_H