form1.cs

来自「一个用C#编写的解释器」· CS 代码 · 共 786 行 · 第 1/3 页

            SignTable[9] = new Keyword("/", DIV);
            SignTable[10] = new Keyword("++", INC);
            SignTable[11] = new Keyword("--", DEC);
            SignTable[12] = new Keyword(" ( ", LP);
            SignTable[13] = new Keyword(" ) ", RP);
            SignTable[14] = new Keyword("/*", LN);
            SignTable[15] = new Keyword("*/", RN);
            SignTable[16] = new Keyword(" { ", LFP);
            SignTable[17] = new Keyword(" } ", RFP);
            SignTable[18] = new Keyword("标识符", ID);
            SignTable[19] = new Keyword("整常数", INT);
            SignTable[20] = new Keyword("浮点数", DOUBLE);

            listBox1.Items.Add("类型码     单词符号");
            foreach (Keyword t in SignTable)
            {
                listBox1.Items.Add(" " + t.value + "\t     " + t.key);
            }

            
           foreach (Keyword t in KeywordTable)
           {
               listBox1.Items.Add(" " + t.value + "\t     " + t.key);
           }
           





        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {

                string ResultText = string.Empty, myText;
                
                for (int i = 0; i < listBox2.Items.Count; i++)
                {
                    ResultText += listBox2.GetItemText(listBox2.Items[i]) + Environment.NewLine;

                }
                myText = "*****原文件内容为*****" + textBox4.Text + Environment.NewLine + "**********************" + Environment.NewLine + Environment.NewLine + "****词法分析结果为****" + Environment.NewLine + ResultText + "**********************" + Environment.NewLine + "建立文件时间：" + System.DateTime.Now.ToString() + Environment.NewLine;
                File.WriteAllText(textBox5.Text, myText, Encoding.Default);
 
                
                   
                MessageBox.Show("成功写入文件","操作成功",MessageBoxButtons.OK,MessageBoxIcon.Asterisk);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            try
            {   
                string myText;
                string mypath=@"D:\范例.txt";
                myText = "您好，这是范例文件"+Environment.NewLine + " begin" + Environment.NewLine + "\tS1=123+(3+2*5+3/1234);" + Environment.NewLine + "\tS2=456.321e4;" + Environment.NewLine + "\tif S1<=S2 then S1=S2;" + Environment.NewLine + "\telse S2=S1;" + Environment.NewLine + " end" + Environment.NewLine + Environment.NewLine + "谢谢使用！";
                File.WriteAllText(mypath, myText, Encoding.Default);
                textBox2.Clear();
                textBox2.Text += @"D:\范例.txt";
                MessageBox.Show("成功生成范例，您可以开始分析范例文件", "操作成功", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                if (File.Exists(@"D:\范例.txt"))
                { 
                    File.Delete(@"D:\范例.txt");
                    textBox2.Clear();
                    textBox2.Text += @"D:\T1.txt";

                    MessageBox.Show("成功删除范例", "操作成功", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                }
                else
                    MessageBox.Show("范例不存在或已被删除", "操作无效", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void button5_Click(object sender, EventArgs e)
        {
            textBox4.Clear();
            listBox2.Items.Clear();
            textBox10.Clear();
            textBox9.Clear();
            textBox8.Clear();
            textBox7.Clear();
            textBox1.Clear();
            textBox6.Clear();
        }

        private void button6_Click(object sender, EventArgs e)
        {
            try
            {
                int n = 0;
                string[] temp;

                OpenFileDialog openFileDialog1 = new OpenFileDialog();
                openFileDialog1.Filter = "文本文件*.txt|*.txt|FPX文件*.fpx|*.fpx|所有文件*.*|*.*";
                if (openFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    



                    using (TextFieldParser myReader = new TextFieldParser(openFileDialog1.FileName))
                {
                    
                    while (!myReader.EndOfData)
                    {
                        myReader.ReadLine();
                        n++;
                    }

                  
                }



                using (TextFieldParser myReader = new TextFieldParser(openFileDialog1.FileName))
                {
                    myReader.TextFieldType = FieldType.FixedWidth;
                    myReader.SetFieldWidths(-1);
                    

                    KeywordTable = new Keyword[n];

                    for (int i=0;n>0 ;i++,n-- )
                    {
                        temp = myReader.ReadFields();

                        KeywordTable[i] = new Keyword(temp[0],22+i);
                    }
               
                    
                    
                    listBox1.Items.Clear();
                    listBox1.Items.Add("类型码     单词符号");
                    foreach (Keyword t in SignTable)
                    {
                        listBox1.Items.Add(" " + t.value + "\t     " + t.key);
                    }


                    foreach (Keyword t in KeywordTable)
                    {
                        listBox1.Items.Add(" " + t.value + "\t     " + t.key);
                    }

                }
            }

              
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message+Environment.NewLine +"可能您导入的信息格式有误", "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void button8_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            KeywordTable = new Keyword[12];
            KeywordTable[0] = new Keyword("begin", BEGIN);
            KeywordTable[1] = new Keyword("end", END);
            KeywordTable[2] = new Keyword("if", IF);
            KeywordTable[3] = new Keyword("then", THEN);
            KeywordTable[4] = new Keyword("else", ELSE);
            KeywordTable[5] = new Keyword("while", WHILE);
            KeywordTable[6] = new Keyword("do", DO);
            KeywordTable[7] = new Keyword("var", VAR);
            KeywordTable[8] = new Keyword("integer", INTEGER);
            KeywordTable[9] = new Keyword("procedure", PROCEDURE);
            KeywordTable[10] = new Keyword("parbegin", PARBEGIN);
            KeywordTable[11] = new Keyword("parend", PAREND);

            SignTable = new Keyword[21];
            SignTable[0] = new Keyword("<", LT);
            SignTable[1] = new Keyword("<=", LE);
            SignTable[2] = new Keyword("=", EQ);
            SignTable[3] = new Keyword("<>", NE);
            SignTable[4] = new Keyword(">", GT);
            SignTable[5] = new Keyword(">=", GE);
            SignTable[6] = new Keyword("+", ADD);
            SignTable[7] = new Keyword("-", SUB);
            SignTable[8] = new Keyword("*", MUL);
            SignTable[9] = new Keyword("/", DIV);
            SignTable[10] = new Keyword("++", INC);
            SignTable[11] = new Keyword("--", DEC);
            SignTable[12] = new Keyword(" ( ", LP);
            SignTable[13] = new Keyword(" ) ", RP);
            SignTable[14] = new Keyword("/*", LN);
            SignTable[15] = new Keyword("*/", RN);
            SignTable[16] = new Keyword(" { ", LFP);
            SignTable[17] = new Keyword(" } ", RFP);
            SignTable[18] = new Keyword("标识符", ID);
            SignTable[19] = new Keyword("整常数", INT);
            SignTable[20] = new Keyword("浮点数", DOUBLE);

            listBox1.Items.Add("类型码     单词符号");
            foreach (Keyword t in SignTable)
            {
                listBox1.Items.Add(" " + t.value + "\t     " + t.key);
            }


            foreach (Keyword t in KeywordTable)
            {
                listBox1.Items.Add(" " + t.value + "\t     " + t.key);
            }
        }

        private void button7_Click(object sender, EventArgs e)
        {
            try
            {
                SaveFileDialog savedialog1 = new SaveFileDialog();
                savedialog1.Filter = "文本文件*.txt|*.txt|FPX文件*.fpx|*.fpx|所有文件*.*|*.*";
                if (savedialog1.ShowDialog() == DialogResult.OK && savedialog1.FileName != "")
                {
                    string  myText = string.Empty;

                    
                     
                    

                    foreach (Keyword t in KeywordTable)
                    {
                        myText +=t.key +Environment.NewLine;
                    }
                    File.WriteAllText(savedialog1.FileName, myText, Encoding.Default);
                }
               

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }
    }

}