404 lines
10 KiB
C#
404 lines
10 KiB
C#
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using System;
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using System.Diagnostics;
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using UnityEngine;
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namespace TMPro
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{
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/// <summary>
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/// Structure used to track basic XML tags which are binary (on / off)
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/// </summary>
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public struct TMP_FontStyleStack
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{
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public byte bold;
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public byte italic;
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public byte underline;
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public byte strikethrough;
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public byte highlight;
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public byte superscript;
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public byte subscript;
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public byte uppercase;
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public byte lowercase;
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public byte smallcaps;
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/// <summary>
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/// Clear the basic XML tag stack.
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/// </summary>
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public void Clear()
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{
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bold = 0;
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italic = 0;
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underline = 0;
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strikethrough = 0;
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highlight = 0;
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superscript = 0;
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subscript = 0;
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uppercase = 0;
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lowercase = 0;
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smallcaps = 0;
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}
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public byte Add(FontStyles style)
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{
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switch (style)
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{
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case FontStyles.Bold:
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bold++;
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return bold;
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case FontStyles.Italic:
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italic++;
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return italic;
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case FontStyles.Underline:
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underline++;
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return underline;
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case FontStyles.UpperCase:
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uppercase++;
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return uppercase;
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case FontStyles.LowerCase:
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lowercase++;
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return lowercase;
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case FontStyles.Strikethrough:
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strikethrough++;
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return strikethrough;
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case FontStyles.Superscript:
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superscript++;
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return superscript;
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case FontStyles.Subscript:
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subscript++;
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return subscript;
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case FontStyles.Highlight:
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highlight++;
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return highlight;
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}
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return 0;
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}
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public byte Remove(FontStyles style)
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{
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switch (style)
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{
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case FontStyles.Bold:
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if (bold > 1)
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bold--;
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else
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bold = 0;
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return bold;
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case FontStyles.Italic:
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if (italic > 1)
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italic--;
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else
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italic = 0;
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return italic;
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case FontStyles.Underline:
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if (underline > 1)
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underline--;
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else
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underline = 0;
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return underline;
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case FontStyles.UpperCase:
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if (uppercase > 1)
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uppercase--;
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else
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uppercase = 0;
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return uppercase;
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case FontStyles.LowerCase:
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if (lowercase > 1)
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lowercase--;
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else
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lowercase = 0;
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return lowercase;
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case FontStyles.Strikethrough:
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if (strikethrough > 1)
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strikethrough--;
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else
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strikethrough = 0;
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return strikethrough;
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case FontStyles.Highlight:
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if (highlight > 1)
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highlight--;
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else
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highlight = 0;
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return highlight;
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case FontStyles.Superscript:
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if (superscript > 1)
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superscript--;
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else
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superscript = 0;
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return superscript;
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case FontStyles.Subscript:
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if (subscript > 1)
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subscript--;
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else
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subscript = 0;
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return subscript;
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}
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return 0;
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}
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}
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/// <summary>
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/// Structure used to track XML tags of various types.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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[DebuggerDisplay("Item count = {m_Count}")]
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public struct TMP_TextProcessingStack<T>
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{
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public T[] itemStack;
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public int index;
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T m_DefaultItem;
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int m_Capacity;
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int m_RolloverSize;
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int m_Count;
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const int k_DefaultCapacity = 4;
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/// <summary>
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/// Constructor to create a new item stack.
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/// </summary>
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/// <param name="stack"></param>
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public TMP_TextProcessingStack(T[] stack)
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{
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itemStack = stack;
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m_Capacity = stack.Length;
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index = 0;
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m_RolloverSize = 0;
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m_DefaultItem = default(T);
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m_Count = 0;
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}
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/// <summary>
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/// Constructor for a new item stack with the given capacity.
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/// </summary>
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/// <param name="capacity"></param>
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public TMP_TextProcessingStack(int capacity)
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{
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itemStack = new T[capacity];
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m_Capacity = capacity;
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index = 0;
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m_RolloverSize = 0;
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m_DefaultItem = default(T);
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m_Count = 0;
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}
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public TMP_TextProcessingStack(int capacity, int rolloverSize)
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{
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itemStack = new T[capacity];
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m_Capacity = capacity;
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index = 0;
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m_RolloverSize = rolloverSize;
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m_DefaultItem = default(T);
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m_Count = 0;
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}
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/// <summary>
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///
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/// </summary>
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public int Count
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{
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get { return m_Count; }
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}
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/// <summary>
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/// Returns the current item on the stack.
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/// </summary>
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public T current
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{
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get
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{
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if (index > 0)
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return itemStack[index - 1];
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return itemStack[0];
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}
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}
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/// <summary>
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///
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/// </summary>
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public int rolloverSize
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{
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get { return m_RolloverSize; }
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set
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{
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m_RolloverSize = value;
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//if (m_Capacity < m_RolloverSize)
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// Array.Resize(ref itemStack, m_RolloverSize);
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}
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}
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/// <summary>
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/// Set stack elements to default item.
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/// </summary>
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/// <param name="stack">The stack of elements.</param>
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/// <param name="item"></param>
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internal static void SetDefault(TMP_TextProcessingStack<T>[] stack, T item)
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{
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for (int i = 0; i < stack.Length; i++)
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stack[i].SetDefault(item);
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}
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/// <summary>
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/// Function to clear and reset stack to first item.
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/// </summary>
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public void Clear()
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{
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index = 0;
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m_Count = 0;
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}
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/// <summary>
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/// Function to set the first item on the stack and reset index.
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/// </summary>
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/// <param name="item"></param>
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public void SetDefault(T item)
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{
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if (itemStack == null)
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{
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m_Capacity = k_DefaultCapacity;
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itemStack = new T[m_Capacity];
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m_DefaultItem = default(T);
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}
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itemStack[0] = item;
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index = 1;
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m_Count = 1;
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}
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/// <summary>
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/// Function to add a new item to the stack.
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/// </summary>
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/// <param name="item"></param>
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public void Add(T item)
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{
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if (index < itemStack.Length)
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{
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itemStack[index] = item;
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index += 1;
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}
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}
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/// <summary>
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/// Function to retrieve an item from the stack.
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/// </summary>
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/// <returns></returns>
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public T Remove()
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{
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index -= 1;
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m_Count -= 1;
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if (index <= 0)
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{
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m_Count = 0;
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index = 1;
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return itemStack[0];
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}
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return itemStack[index - 1];
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}
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public void Push(T item)
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{
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if (index == m_Capacity)
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{
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m_Capacity *= 2;
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if (m_Capacity == 0)
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m_Capacity = k_DefaultCapacity;
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Array.Resize(ref itemStack, m_Capacity);
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}
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itemStack[index] = item;
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if (m_RolloverSize == 0)
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{
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index += 1;
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m_Count += 1;
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}
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else
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{
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index = (index + 1) % m_RolloverSize;
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m_Count = m_Count < m_RolloverSize ? m_Count + 1 : m_RolloverSize;
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}
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}
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public T Pop()
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{
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if (index == 0 && m_RolloverSize == 0)
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return default(T);
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if (m_RolloverSize == 0)
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index -= 1;
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else
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{
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index = (index - 1) % m_RolloverSize;
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index = index < 0 ? index + m_RolloverSize : index;
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}
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T item = itemStack[index];
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itemStack[index] = m_DefaultItem;
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m_Count = m_Count > 0 ? m_Count - 1 : 0;
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return item;
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}
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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public T Peek()
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{
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if (index == 0)
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return m_DefaultItem;
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return itemStack[index - 1];
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}
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/// <summary>
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/// Function to retrieve the current item from the stack.
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/// </summary>
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/// <returns>itemStack <T></returns>
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public T CurrentItem()
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{
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if (index > 0)
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return itemStack[index - 1];
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return itemStack[0];
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}
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/// <summary>
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/// Function to retrieve the previous item without affecting the stack.
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/// </summary>
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/// <returns></returns>
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public T PreviousItem()
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{
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if (index > 1)
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return itemStack[index - 2];
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return itemStack[0];
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}
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}
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}
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