Pascal MINI compiler

A Basic Pascal language Compiler made as a course project of Compilers Course CS327 (IITGN). Taking the input a ".pas" file creates executables MIPS assembly code - "asmb.asm". Can be run with MARS MIPS Simulator.

Command to Compile the compiler 😂

clear
rm lex.yy.c calc.tab.c calc.tab.h a.out
bison --debug -d calc.y
flex --debug tok.l
gcc calc.tab.c lex.yy.c -lfl

Using Pascal MINI compiler to compile a Pascal program

./a.out<TestCodes/filename.pas

Statements from PASCAL which can be compiled

• datatypes supported - integer
• Arithmatic Operators + - * div
• Conditional Operators '<' '>' '<>'(not equal to) '='(equal to) '<=' '>='
• while (condition) do
• if .. then ..
• if .. then .. else ..
• block statement (begin... end;)
• for i:= Exp to Exp do ..
• for i:= Exp downto Exp do ..
• print with single argument -- write(Exp);
• print string -- write('YOUR_STRING_HERE_WITH_NO_SPACE_IN_BLOCK_LETTERS');
• read single argument -- read(input, VAR_NAME_HERE );

Some programs the compiler can compile

• Pic1

• Pic2

• Pic3

Refrences used ..

1. https://www.cs.helsinki.fi/u/vihavain/k10/okk/minipascal/minipascalsyntax.html
2. Example Compiler (Last Lab - whileLoop)

Team Members

• Shah Ujjaval Satishkumar - 17110141
• Anshuman Yadav - 17110020
• Ayush Agarwal - 17110030
• Shaurya Agarawal - 17110145