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ERPLAG Compiler, Group 02

Language

This repository contains the toy-compiler created as part of requirements for the course CS F363: Compiler Construction at BITS Pilani, Pilani Campus in Spring 2023 under Dr. Vandana Agarwal. Our team (Group 2) scored the highest among all groups which were part of the course.

See marks distribution for our team here

Features supported by the language

Click here for language specifications.

  • The language ERPLAG is a strongly typed language with primitive data types as integer and floating point.
  • It also supports two other data types: boolean and arrays.
  • The language supports arithmetic and boolean expressions.
  • The language supports assignment statements, input/output statements, declarative, conditional, iterative, and function call statements.
  • The language supports the modular implementation of the functionalities.
  • Functions can return multiple values. The function may or may not return a value as well.
  • The scope of the variables is static and the variable is visible only in the block where it is declared.

Dependencies

  1. Ensure you have gcc, version 5.0 or greater, installed.

gcc version can be checked via gcc --version command on terminal.

  1. Ensure you have nasm, version 2.14.02 or greater, installed

nasm version can be checked via nasm --version command on terminal. You can install nasm via sudo apt install nasm

Instructions to run

makefile has been provided with the code along with some sample test cases. Run the following commands.

$ make
// The output to this should be
gcc -c -g driver.c
gcc -c -g parser.c
gcc -c -g lexer.c
gcc -c -g trie.c
gcc -c -g stackADT.c
gcc -c -g Set.c
gcc -c -g ast.c
gcc -c -g symbolTable.c
gcc -c -g intermedCodeGen.c
gcc -c -g codegen.c
gcc -Wall driver.o parser.o trie.o lexer.o Set.o stackADT.o ast.o symbolTable.o intermedCodeGen.o codegen.o -g -o compiler

Once all the files have been compiled correctly, run

$ ./compiler <testcase.txt> <outputFile.asm>

To run the .asm file, use this command

$ nasm -f elf64 <outputFile.asm> -o code.o && gcc -no-pie code.o -o code
$ ./code

Sample ERPLAG Code

<<<driver program>>>
start
	declare x, y, z:integer;
	declare a, b, c:integer;
	a:= 5;
	b:= 9;
	get_value(x);
	get_value(y);
	z:= x + y*b +(a-b)*y+ a*2 - b*x;	
        print(z);
end

Sample Output

Input: Enter an integer value 
2
Input: Enter an integer value 
3
Output: 9

Team Members

S. No. Name ID GitHub Profile
1 Dhruv Rawat 2019B3A70537P thedhruvrawat
2 Chirag Gupta 2019B3A70555P Chirag5128
3 Swastik Mantry 2019B1A71019P Swastik-Mantry
4 Shreyas Sheeranali 2019B3A70387P ShreyasSR
5 Vaibhav Prabhu 2019B3A70593P prabhuvaibhav

Group

Disclaimer

All the code and files provided on this repository are strictly for educational purposes with no intention of promoting unfair means in any evaluative component.

License

MIT