?? complier.cs
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?using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Collections.Specialized;
namespace ComplierForm
{
public partial class Complier : Form
{
private string[,] StringCodeWord;//存放保留字的二維數組
private bool beginString = true; //判斷是否為首字符
private string stringPath = null; //存放打開的源文件的路徑
private static string stringAdd = ""; //對讀入的每個字符進行拼接
private static string[] stringOut=new string[2]; //用于輸出模塊存放保留字和碼值
private StreamWriter sw1 = null; //用于把非法字符存入Error.txt文件
private static int countErrorLine = 0; //用于給出非法字符行的行號
private static bool ErrorString = false;
private static int countChar = 0; //用于給出非法字符的位置
public Complier()
{
InitializeComponent();
}
private void buttonLoadFile_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "txt Files(*.txt)|*.txt|All Files(*.*)|*.*";
openFileDialog1.RestoreDirectory = true;
if ((openFileDialog1.ShowDialog() == DialogResult.OK) && (openFileDialog1.FileName.Length > 0))
{
if ((File.Exists(openFileDialog1.FileName))==true) //如果文件存在
{
buttonComplie.Enabled = true;
stringPath = openFileDialog1.FileName;//為后邊建立文件流給出文件路徑
richTextBoxSourceFile.Clear();
richTextBoxSourceFile.LoadFile(openFileDialog1.FileName, RichTextBoxStreamType.PlainText);
sw1 = File.CreateText(Directory.GetCurrentDirectory()+"\\Error.txt");//進行錯誤處理
}
}
}
private void Complier_Load(object sender, EventArgs e)
{
#region 把關鍵字從文件中倒入二維數組中
try
{
buttonComplie.Enabled = false;
listViewCode.GridLines = true; //設置listview的屬性
listViewCode.FullRowSelect = true;
listViewCode.AllowColumnReorder = true;
string CodeWordPath = Directory.GetCurrentDirectory() + "//CodeTable.txt";
StreamReader sr = new StreamReader(CodeWordPath);
StringCollection stringcollection = new StringCollection();//無需給出初始值的大小
string oneLine;
while ((oneLine = sr.ReadLine()) != null) //讀到文件末尾將返回null
{
stringcollection.Add(oneLine.Trim());
}
sr.Close();
int length = stringcollection.Count;
string[] stringArray=new string[length];
stringcollection.CopyTo(stringArray, 0);
StringCodeWord=new string[length,2]; //此例中，length=35
//為數組賦值
for (int i = 0; i < length; i++)
{
string[] splitString = stringArray[i].Split(' '); //把每行的數據分開存在二維數組中
StringCodeWord[i,0]=splitString[0].Trim();
StringCodeWord[i,1]=splitString[1].Trim();
}
}
catch
{
MessageBox.Show("關鍵字表文件不存在！","警告！",MessageBoxButtons.OK,MessageBoxIcon.Warning);
}
#endregion
}
//拼讀一個單詞模塊scan
private string Scan(char stringChar)
{
// MessageBox.Show(stringAdd);
if (stringChar == '\n')
{
Look("\\n");
if ((stringAdd.Trim().Length != 0) && (stringAdd.Trim() != ";") && (stringAdd.Trim() != ".") && (stringAdd.Trim() != ","))
{
Look(stringAdd);
}
countErrorLine += 1; //用于判斷是哪一行出錯了，執行到出錯行的時候停止編譯，給出提示信息
beginString = true;
stringAdd = "";
return stringAdd;
}
//if (((int)stringChar) == 10)
//{
// if ((stringAdd.Trim().Length != 0) && (stringAdd.Trim() != ";") && (stringAdd.Trim() != ".") && (stringAdd.Trim() != ","))
// {
// Look(stringAdd);
// }
// //MessageBox.Show(((int)(stringChar)).ToString());
// countErrorLine += 1; //用于判斷是哪一行出錯了，執行到出錯行的時候停止編譯，給出提示信息
// beginString = true;
// stringAdd = "";
// // MessageBox.Show(countErrorLine.ToString());
// return stringAdd;
//}
if(stringChar==' ') //如果是空格的話，把標志為置為true，因為空格后邊讀入的肯定是個新的字符串
{
if (stringAdd.Trim().Length >0)
{
Look(stringAdd);
}
//清空拼接字符串，以便接受一個新的字符
stringAdd = "";
beginString=true;
return stringAdd;
}
if (beginString ==true) //如果此字符是字符串的第一個字符，分為數字和字母兩種情況
{
if(stringChar!=' ')
{
beginString = false;
stringAdd += stringChar; //不管首字符是數字還是字符，都賦給拼接字符串 stringAdd
//MessageBox.Show(stringAdd);
}
}
else if (beginString == false) //如果此字符不是字符串的第一個字符，根據字符決定如何拼接
{
switch(stringChar)
{
case ',': //設置一個標志為來判斷此時傳來的是否為一個字符串的開始
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look(","); //如果是“，”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case ';':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look(";"); //如果是“；”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '.':
if (stringAdd.Trim() != "")
{
// MessageBox.Show(stringChar.ToString());
Look(stringAdd);
stringAdd = "";
}
Look("."); //如果是“.”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '+':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look("+"); //如果是“+”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '-':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look("-"); //如果是“-”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '*':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look("*"); //如果是“*”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '/':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look("/"); //如果是“/”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case '=':
if (stringAdd.Trim() != "")
{
if (stringAdd.Trim().EndsWith(":", true,null)) //":="
{
stringAdd += stringChar;
Look(stringAdd);
stringAdd = "";
}
else if (stringAdd.Trim().EndsWith(">", true, null)) // ">="
{
stringAdd += stringChar;
Look(stringAdd);
stringAdd = "";
}
else if (stringAdd.Trim().EndsWith("<", true, null)) // "<="
{
stringAdd += stringChar;
Look(stringAdd);
stringAdd = "";
}
}
else
{
Look("="); //如果是“=”，直接查表
stringAdd = "";
}
stringAdd = "";
beginString = true;
return stringAdd;
case '>':
if (stringAdd.Trim() != "")
{
if (stringAdd.EndsWith("<", true, null))
{
stringAdd += stringChar;
Look(stringAdd);
stringAdd = "";
beginString = true;
}
else if (stringAdd.EndsWith("<", true, null) == false) //如果上個符號不是“<”,就要查找上個字符串
{
Look(stringAdd);
stringAdd = stringChar.ToString().Trim();
beginString = false;
}
}
else
{
stringAdd = stringChar.ToString().Trim(); //把“>”放入字符串一邊檢查是否是符號 “>=”
beginString = false; //這個地方不可以查“>”表，因為又可能是符號“>=”
}
return stringAdd;
case '<':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = stringChar.ToString(); //不可以對“<”查表，因為可能是符號“<=”和“<”
beginString = false; //現在就對“<”查表，會把符號“<=”解析成兩個符號
} //"<" 和 "<="
else
{
stringAdd = stringChar.ToString();
beginString = false;
}
return stringAdd;
case '(':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look("("); //如果是“(”，直接查表
stringAdd = "";
beginString = true;
return stringAdd;
case ')':
if (stringAdd.Trim() != "")
{
Look(stringAdd);
stringAdd = "";
}
Look(")"); //如果是“+”，直接查表
stringAdd = "";
beginString = true;
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