lexer.h

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/*
 * Copyright 2026 The A11 Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef A11_FLOW_LEXER_H_
#define A11_FLOW_LEXER_H_
 
#include <string_view>
#include <vector>
 
#include "a11/flow/diagnostic.h"
#include "a11/flow/token.h"
 
namespace a11::flow {
 
struct LexOptions {
  // Whether comments are tokens.
  bool keep_comments = true;
};
 
struct LexResult {
  std::vector<Token> tokens;
  std::vector<Diagnostic> diagnostics;
 
  [[nodiscard]] bool HasErrors() const;
};
 
LexResult Lex(std::string_view source, LexOptions options = {});
 
}  // namespace a11::flow
 
#endif  // A11_FLOW_LEXER_H_