/*
 * MIT License
 *
 * Copyright (c) 2026 YuYuKunKun
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 */

use crate::structure::segment_feat::线段特征;
use crate::types::分型结构;
use std::sync::Arc;

/// 特征分型 — 由三个线段特征元素构成的分型，用于线段特征序列的分型分析。
///
/// 字段:
///   左: 左侧线段特征元素
///   中: 中间线段特征元素
///   右: 右侧线段特征元素
///   结构: 由左中右三元素分析得出的分型结构（顶/底/散）
#[derive(Debug, Clone)]
pub struct 特征分型 {
    /// 左侧线段特征元素
    pub 左: Arc<线段特征>,
    /// 中间线段特征元素
    pub 中: Arc<线段特征>,
    /// 右侧线段特征元素
    pub 右: Arc<线段特征>,
    /// 由左中右分析得出的分型结构
    pub 结构: 分型结构,
}

impl 特征分型 {
    pub fn new(
        左: Arc<线段特征>, 中: Arc<线段特征>, 右: Arc<线段特征>, 结构: 分型结构
    ) -> Self {
        Self {
            左, 中, 右, 结构
        }
    }
}

impl std::fmt::Display for 特征分型 {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "特征分型<{}, {}>", self.结构, self.中)
    }
}
