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78 lines (60 loc) · 2.18 KB
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// Copyright 2018 Google LLC
//
// 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 CC_COORD_H_
#define CC_COORD_H_
#include <cstdint>
#include <ostream>
#include <string>
#include "absl/strings/string_view.h"
#include "cc/constants.h"
#include "cc/logging.h"
namespace minigo {
// Coord represents the coordinates of a point on the board, a pass, or a
// resign.
class Coord {
public:
static constexpr uint16_t kPass = kN * kN;
static constexpr uint16_t kResign = kPass + 1;
static constexpr uint16_t kInvalid = 0xffff;
static const char kGtpColumns[20];
Coord() = default;
Coord(uint16_t value) : value_(value) {} // NOLINT(runtime/explicit)
Coord(int row, int col) {
MG_DCHECK(row >= 0 && row < kN);
MG_DCHECK(col >= 0 && col < kN);
value_ = row * kN + col;
}
// Parse a Coord from a GTP string.
static Coord FromGtp(absl::string_view str, bool allow_invalid = false);
// Parse a Coord from a SGF string.
static Coord FromSgf(absl::string_view str, bool allow_invalid = false);
// Parse a Coord from one of the above string representations.
static Coord FromString(absl::string_view str, bool allow_invalid = false);
// Format the Coord as a GTP string.
std::string ToGtp() const;
// Format the Coord as an SGF string.
std::string ToSgf() const;
operator uint16_t() const { return value_; }
// Enable Coords to be used as keys in absl hashed containers.
template <typename H>
friend H AbslHashValue(H h, Coord c) {
return H::combine(std::move(h), c.value_);
}
private:
uint16_t value_ = kInvalid;
};
// Formats the coord as a GTP string.
std::ostream& operator<<(std::ostream& os, Coord c);
} // namespace minigo
#endif // CC_COORD_H_