Compiler Design Practical

This document presents a practical assignment in compiler design. It includes several examples demonstrating different aspects of compiler construction, such as lexical analysis, syntax analysis, and GUI design. Each example shows the input file content, the expected output, and a space to fill in the program's output. The examples cover various scenarios, including lexical errors, syntax errors, and the creation of a simple calculator GUI with different layouts (Flow, Grid, Border) and nested panels. There's also an example showing the implementation of radio buttons. The assignment aims to test the student's understanding of compiler design principles and their ability to implement them practically.

Example 1: Lexical error
File Contents (file "input1.txt") Actual Output
Window "Calculator" (200, 200) Layout Flow():
Textfield 20;
Panel Layout Grid(4, 3, 5, 5)|
Button "7";
Button "8";
Button "9";
Button "4";
Button "5";
Button "6";
Button "1";
Button "2";
Button "3";
Label "";
Button "0";
End;
End.
Lexical error! (please provide details)
Fill here the output from your program.
Example 2: Syntax error
File Contents (file "input2.txt") Actual Output
Window "Calculator" (200, 200) Layout
Flow(LEFT):
Textfield 20;
Panel Layout Grid(4, 3, 5, 5):
Button "7";
Button "8";
Button "9";
Button "4":
Button "5";
Button "6";
Button "1";
Button "2";
Button "3";
Label "";
Button "0";
End;
End.
Syntax error! (please provide details)
Fill here the output from your program.

Example 3: Calculator v1
File Contents (file "input3.txt") Actual Output
Window "Calculator" (200, 200) Layout Flow(CENTER):
Textfield 20;
Panel Layout Grid(4, 3):
Button "7";
Button "8";
Button "9";
Button "4";
Button "5";
Button "6";
Button "1";
Button "2";
Button "3";
Label "";
Button "0";
End;
End.
Fill here the output from your program.
Example 4: Calculator v2
File Contents (file "input4.txt") Actual Output
Window "Calculator" (200, 200) Layout Border():
Textfield 20;
Label "-------------------";
Panel Layout Grid(4, 3, 5, 5):
Button "7";
Button "8";
Button "9";
Button "4";
Button "5";
Button "6";
Button "1";
Button "2";
Button "3";
Label "";
Button "0";
Label "-------------------";
End;
End.
Fill here the output from your program.

Example 5: Radio buttons
File Contents (file "input5.txt") Actual Output
Window "Radio Button Test" (300, 200) Layout
Grid (5, 1):
Group
Radio "First";
Radio "Second";
Radio "Third";
Radio "Fourth";
Radio "Fifth";
End;
End.
Fill here the output from your program.
Example 6: Nested panels
File Contents (file "input6.txt") Actual Output
Window "Nested Panel Test" (550, 200) Layout
Border(4,5):
Label "Main Panel";
Panel Layout Flow(LEFT):
Panel Layout Flow(CENTER):
Panel Layout Flow(CENTER):
Panel Layout Flow(RIGHT):
Button "Fifth Panel";
End;
Button "Fourth Panel";
End;
Button "Third Panel";
End;
Button "Second Panel";
End;
End.
Fill here the output from your program.