Program source file Contents:
Using System;
Using System.Drawing;
Using System.Collections;
Using System.ComponentModel;
Using System.Windows.Forms;
Using System.Data;
Namespace Wzy2
{
<summary>
Summary description of the Form1.
</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>
The required designer variable.
</summary>
Private System.ComponentModel.Container components = null;
Public Form1 ()
{
//
Required for Windows Forms Designer support
//
InitializeComponent ();
//
TODO: Add any constructor code after the InitializeComponent call
//
}
<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}
Code generated #region the Windows forms Designer
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</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 analysis";
//
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 = "Analysis";
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 = "read into";
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 = "Form1";
This. Text = "Form1";
This. Load + = new System.EventHandler (this. Form1_Load);
This. ResumeLayout (FALSE);
}
#endregion
<summary>
The main entry point for the application.
</summary>
[STAThread]
static void Main ()
{
Application.Run (New Form1 ());
}
<summary>
Lexical analysis functions
</summary>
<param name= "Sender" ></param>
<param name= "E" ></param>
private void Button1_Click (object sender, System.EventArgs e)
{
Get the desired array of characters.
char[] Getch = Texttochararray ();
Converts an array of characters to an array of words after lexical parsing.
string[] Stringarray = Chararraytostringarray (getch);
Sort the array of words, using numbers to mark the categories in which each word is located.
string[,] Twostringarray = Stringarraytotwostringarray (Stringarray);
Used to output two-dimensional arrays.
Printstring (Twostringarray);
}
<summary>
The output result is used to output two-dimensional arrays.
</summary>
<param name= "Twostringarray" ></param>
private void Printstring (string[,] twostringarray)
{
Hint description
This.richTextBox2.Text = "1-> reserved word" + "\ r \ n" +
"2-> operator" + "\ r \ n" +
"3-> separator" + "\ r \ n" +
"4-> number" + "\ r \ n" +
"5-> other" + "\ r \ n";
Output data in a two-dimensional array
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>
Open square pieces
</summary>
<param name= "Sender" ></param>
<param name= "E" ></param>
private void Button2_Click (object sender, System.EventArgs e)/File open method.
{
Openfiledialog1.filter = "text file (*.txt) |*.txt";
Openfiledialog1.title = "Open the source file you want to parse. ";
if (openfiledialog1.showdialog () = = DialogResult.OK)
{
System.IO.StreamReader sr = new
System.IO.StreamReader (Openfiledialog1.filename);
This.richTextBox1.Text = Sr. ReadToEnd ();
Sr. Close ();
}
}
<summary>
Save File
</summary>
<param name= "Sender" ></param>
<param name= "E" ></param>
private void Button3_Click (object sender, System.EventArgs e)
{
Savefiledialog1.filter = "text file (*.txt) |*.txt";
Savefiledialog1.title = "Save analysis results."
if (savefiledialog1.showdialog () = = DialogResult.OK)
{
System.IO.StreamWriter WR = new
System.IO.StreamWriter (Savefiledialog1.filename);
wr. Write (This.richTextBox2.Text);
wr. Close ();
}
}
<summary>
Flags referencing two-dimensional arrays and words 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>
Reference an array of words, and words to add an array of words
</summary>
<param name= "Stringarrange" ></param>
<param name= "St" ></param>
private void stringtoarraystring (ref string[] Stringarrange, String st)
{
if (stringarrange[0] = = "")
{
Stringarrange[0] = st;
}
Else
{
string[] Olda = stringarrange;//just got the string
int I=olda.length +1;
Stringarrange = new string[i];//Request a long array of characters.
Olda.copyto (stringarrange,0);//The previous array of characters was tested into the array now.
Stringarrange[stringarrange.length-1] = st;
}
}
<summary>
The string in text is stored in a character array.
</summary>
<returns></returns>
Private char[] Texttochararray ()
{
String stringtemp;
Stringtemp = This.richTextBox1.Text;
char[] Getch = Stringtemp.tochararray ()//The characters to be processed are in Getch this array.
return getch;
}
<summary>
Character array to Word array
</summary>
<param name= "Getch" ></param>
<returns></returns>
Private string[] Chararraytostringarray (char[] getch)//Converts a character array to an array of strings. That is, the word array after lexical analysis.
{
String[] stringarrange={""};//Use this string array to store words that are obtained after lexical analysis.
Char chartemp;
String stringsave = "";//storing a parsed word
One loop for getting a word.
for (int i = 0;i < Getch. length;i++)
{
Chartemp = Getch[i];
A word that consists of a number and a letter at the beginning of a letter.
if (chartemp >= ' a ' &&
Chartemp <= ' z '
||
Chartemp >= ' A ' &&
Chartemp <= ' Z ')
{
Stringsave = Chartemp.tostring ();
i = i + 1;
int test = 0;//to determine whether the loop ends, 1 is the end.
while (test = = 0)
{
Chartemp = Getch[i];
if (chartemp >= ' a ' &&
Chartemp <= ' z '
||
Chartemp >= ' A ' &&
Chartemp <= ' Z '
||
Chartemp >= ' 0 ' &&
Chartemp <= ' 9 ')
{
Stringsave = Stringsave + chartemp.tostring ();
i = i + 1;
}
Else
Test = 1;
}
Stringtoarraystring (ref Stringarrange,stringsave);
}
Stringsave = "";
A word made up of numbers.
if (chartemp >= ' 0 ' &&
Chartemp <= ' 9 ')
{
Stringsave = Stringsave + chartemp.tostring ();
i = i + 1;
int test1 = 0;
while (test1 = 0)
{
Chartemp = Getch[i];
if (chartemp >= ' 0 ' &&
Chartemp <= ' 9 ')
{
Stringsave = Stringsave + chartemp.tostring ();
i = i + 1;
}
Else
Test1 = 1;
}
Stringtoarraystring (ref Stringarrange,stringsave);
}
Stringsave = "";
A word that is made up of operators.
if (chartemp = = ' + '
|| chartemp = '-'
|| Chartemp = = ' * '
|| Chartemp = = '/'
|| Chartemp = = ' = '
|| Chartemp = ' < '
|| Chartemp = ' > '
|| Chartemp = = '! ')
{
Stringsave = Stringsave + chartemp.tostring ();
i = i + 1;
int test2 = 0;
while (test2 = 0)
{
Chartemp = Getch[i];
if (chartemp = = ' + '
|| chartemp = '-'
|| Chartemp = = ' * '
|| Chartemp = = '/'
|| Chartemp = = ' = '
|| Chartemp = ' < '
|| Chartemp = ' > '
|| Chartemp = = '! ')
{
Stringsave = Stringsave + chartemp.tostring ();
i = i + 1;
}
Else
Test2 = 1;
}
Stringtoarraystring (ref Stringarrange,stringsave);
}
Stringsave = "";
A word that is made up of a mediator.
if (chartemp = = '
|| Chartemp = = ') '
|| Chartemp = = ' {'
|| Chartemp = = '} '
|| chartemp = ' ['
|| Chartemp = = '] '
|| Chartemp = = ', '
|| Chartemp = = ': '
|| Chartemp = = '; '
|| chartemp = ' "'
|| Chartemp = = ' \ '
|| Chartemp = = ' \ ')
{
Stringsave = Stringsave + chartemp.tostring ();
Stringtoarraystring (ref Stringarrange,stringsave);
}
}
return stringarrange;
}
<summary>
A word array to a two-dimensional word array.
</summary>
<param name= "Stringarray" ></param>
<returns></returns>
Private string[,] Stringarraytotwostringarray (string[] stringarray)
{
The result of storing the word ID.
string [,] Twoarray = new string[2,1];
The sign of a word
int j=0;
Once each cycle, put a word into a category, which is preceded by a number.
for (int i=0;i<stringarray.length;i++)
{
Reserved word 1
if (stringarray[i] = = "Main"
|| Stringarray[i] = = "int"
|| Stringarray[i] = = "float"
|| Stringarray[i] = = "printf"
|| Stringarray[i] = = "if"
|| Stringarray[i] = = "for"
|| Stringarray[i] = = "while"
|| Stringarray[i] = = "Do"
|| Stringarray[i] = = "return"
|| Stringarray[i] = = "Break"
|| Stringarray[i] = = "Continue")
{
TWOARRAY[0,J] = "1";
TWOARRAY[1,J] = Stringarray[i];
This.onearraytotwo (ref twoarray,ref J);
}
Operator 2
Else
if (stringarray[i] = = "+"
|| Stringarray[i] = = "-"
|| Stringarray[i] = = "*"
|| Stringarray[i] = = "/"
|| Stringarray[i] = = ">"
|| Stringarray[i] = = "<"
|| Stringarray[i] = = ">="
|| Stringarray[i] = = "<="
|| Stringarray[i] = = "!="
|| Stringarray[i] = = "= ="
|| Stringarray[i] = = "+ +"
|| Stringarray[i] = = "--"
|| Stringarray[i] = = "=")
{
TWOARRAY[0,J] = "2";
TWOARRAY[1,J] = Stringarray[i];
This.onearraytotwo (ref twoarray,ref J);
}
Separator 3
Else
if (stringarray[i] = = "("
|| Stringarray[i] = = ")"
|| Stringarray[i] = = "{"
|| Stringarray[i] = = "}"
|| Stringarray[i] = = "["
|| Stringarray[i] = = "]"
|| Stringarray[i] = = ","
|| Stringarray[i] = = ";"
|| Stringarray[i] = = ":"
|| Stringarray[i] = = "" "
|| Stringarray[i] = = "*"
|| Stringarray[i] = = "* *")
{
TWOARRAY[0,J] = "3";
TWOARRAY[1,J] = Stringarray[i];
This.onearraytotwo (ref twoarray,ref J);
}
Number 4
Else
if (stringarray[i). ToCharArray () [0] >= ' 0 ' &&
Stringarray[i]. ToCharArray () [0] <= ' 9 ')
{
TWOARRAY[0,J] = "4";//Number
TWOARRAY[1,J] = Stringarray[i];
This.onearraytotwo (ref twoarray,ref J);
}
Other 5 (variables, etc.)
Else
{
TWOARRAY[0,J] = "5";
TWOARRAY[1,J] = Stringarray[i];
This.onearraytotwo (ref twoarray,ref J);
}
}
return twoarray;
}
}
}
