program.cs

简单的词法分析器 利用vc编程 功能 可以打开任意位置和名称的原文件进行词法分析

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Lexical
{
    /// <summary>
    /// Form1 的摘要说明。
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label label1;

        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;

        private System.Windows.Forms.RichTextBox richTextBox1;
        private System.Windows.Forms.RichTextBox richTextBox2;

        private System.Windows.Forms.OpenFileDialog openFileDialog1;
        private System.Windows.Forms.SaveFileDialog saveFileDialog1;

        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Windows 窗体设计器支持所必需的
            //
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.button2 = new System.Windows.Forms.Button();
            this.richTextBox2 = new System.Windows.Forms.RichTextBox();
            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
            this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
            this.button3 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(8, 8);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(72, 24);
            this.label1.TabIndex = 0;
            this.label1.Text = "Lexical Analyzer";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(240, 8);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(64, 23);
            this.button1.TabIndex = 1;
            this.button1.Text = "Ayalyzer";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // richTextBox1
            // 
            this.richTextBox1.Location = new System.Drawing.Point(24, 48);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(240, 352);
            this.richTextBox1.TabIndex = 2;
            this.richTextBox1.Text = "";
            // this.richTextBox1.TextChanged += new System.EventHandler(this.richTextBox1_TextChanged);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(96, 8);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(64, 23);
            this.button2.TabIndex = 3;
            this.button2.Text = "open";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // richTextBox2
            // 
            this.richTextBox2.Location = new System.Drawing.Point(280, 48);
            this.richTextBox2.Name = "richTextBox2";
            this.richTextBox2.Size = new System.Drawing.Size(280, 352);
            this.richTextBox2.TabIndex = 4;
            this.richTextBox2.Text = "";
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(384, 8);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(56, 23);
            this.button3.TabIndex = 5;
            this.button3.Text = "save";
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(584, 430);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.richTextBox2);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.richTextBox1);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.label1);
            this.MaximizeBox = false;
            this.Name = "Lexical Analyzer";
            this.Text = "Lexical Analyzer";
            // this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }
        /// <summary>
        /// 词法分析函数
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, System.EventArgs e)
        {
            //得到想要的字符数组。
            char[] getch = textToCharArray();

            //将字符数组，转换为词法分析后的　单词数组。
            string[] stringArray = charArrayToStringArray(getch);

            //将单词数组分类，用数字标出各个单词所在的类别。
            string[,] twoStringArray = stringArrayToTwoStringArray(stringArray);

            //用于输出二维数组。
            printString(twoStringArray);

        }
        /// <summary>
        /// 输出结果　即用于输出二维数组。
        /// </summary>
        /// <param name="twoStringArray"></param>
        private void printString(string[,] twoStringArray)
        {
            //输出二维数组中的数据
            for (int x = 0; x < twoStringArray.Length / 2; x++)
            {
                for (int y = 0; y < 2; y++)
                {
                    this.richTextBox2.Text = this.richTextBox2.Text + twoStringArray[y, x] + " ";
                    if (y == 1)
                    {
                        this.richTextBox2.Text = this.richTextBox2.Text + "\r\n";
                    }
                }
            }
        }

        /// <summary>
        /// 打开方件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, System.EventArgs e)// 文件打开的方法。
        {
            openFileDialog1.Filter = "文本文件(*.txt)|*.txt";
            openFileDialog1.Title = "open source code";

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                System.IO.StreamReader sr = new
                 System.IO.StreamReader(openFileDialog1.FileName);
                this.richTextBox1.Text = sr.ReadToEnd();
                sr.Close();
            }
        }
        /// <summary>
        /// 保存文件　
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button3_Click(object sender, System.EventArgs e)
        {
            saveFileDialog1.Filter = "文本文件(*.txt)|*.txt";
            saveFileDialog1.Title = "save tokens.";
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                System.IO.StreamWriter wr = new
                 System.IO.StreamWriter(saveFileDialog1.FileName);
                wr.Write(this.richTextBox2.Text);
                wr.Close();
            }
        }

        /// <summary>
        /// 引用二维数组和单词的标志j
        /// </summary>
        /// <param name="twoArray"></param>
        /// <param name="j"></param>
        private void oneArrayToTwo(ref string[,] twoArray, ref int j)
        {

            string[,] tempArray = twoArray;
            twoArray = new string[2, j + 2];
            for (int x = 0; x < 2; x++)
            {
                for (int y = 0; y < j + 1; y++)
                {
                    twoArray[x, y] = tempArray[x, y];
                }
            }
            j = j + 1;
        }
        /// <summary>
        /// 引用单词数组，和要加入单词数组的单词
        /// </summary>
        /// <param name="stringArrange"></param>
        /// <param name="st"></param>
        private void stringToArrayString(ref string[] stringArrange, string st)
        {

            if (stringArrange[0] == "")