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- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef COMPONENTS_ZUCCHINI_TYPE_ZTF_H_
- #define COMPONENTS_ZUCCHINI_TYPE_ZTF_H_
- #include <stddef.h>
- #include <stdint.h>
- namespace zucchini {
- namespace ztf {
- typedef int16_t dim_t;
- // A exclusive upper bound on number of lines and/or columns. Throughout the ZTF
- // code a dimension (dim) refers to a block of 1-3 digits which contain a line
- // or column number.
- enum : size_t { kMaxDimValue = 1000 };
- enum SignChar : uint8_t {
- kMinus = '-',
- kPlus = '+',
- };
- // Lines and columns are 1-based to follow the convention of most modern text
- // editing software. |line| and |col| should be positive, but int16_t is used to
- // limit ranges such that it matches DeltaLineCol.
- struct LineCol {
- dim_t line;
- dim_t col;
- };
- struct DeltaLineCol {
- dim_t line;
- dim_t col;
- };
- constexpr DeltaLineCol operator-(const LineCol& lhs, const LineCol& rhs) {
- return DeltaLineCol{static_cast<dim_t>(lhs.line - rhs.line),
- static_cast<dim_t>(lhs.col - rhs.col)};
- }
- constexpr LineCol operator+(const LineCol& lhs, const DeltaLineCol& rhs) {
- return LineCol{static_cast<dim_t>(lhs.line + rhs.line),
- static_cast<dim_t>(lhs.col + rhs.col)};
- }
- } // namespace ztf
- } // namespace zucchini
- #endif // COMPONENTS_ZUCCHINI_TYPE_ZTF_H_
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