Compiler

Custom built compiler using Yacc and Lex.

What is included

Interger Variables and Expressions

• Interger Literals, Variables
• Assignment Statements
• Arithemtic Operators (+, -, *, /, ^, -(unary minus))
• P

Boolean Variables and Expressions

• Boolean Literals, Variables
• Assignment Statements
• Relational Operators (<, <=, ==, >=, >, !=)
• Boolean Operators (!, &&, ||)
• NOTE: Parentheses do not work - we when through it in office hours can could not figure out why

Input / output

• read(comma delimted list of variables)
  • read(x, y, z)
  • 1 (true), and 0 (false) can be input for boolean variables
• print(comma delimted list of Expressions);
  • print(2x, x^3(zw), abc/xyz, c)
• printlines(expression)
  • print expression number of newlines
• printString("Literal String")

Control Structures

• if statements including optional else
• while loops

Arrays

• 1 Dimensional Arrays
• 2 Dimensional Arrays

Functions

• void parameterless functions

Run Locally (GNU / MAC)

Clone the project

git clone https://github.com/Mbiwersi/C-based-Compiler

Go to the project directory

cd my-project

Generate supporting yacc files

yacc -d ExprEval.y

Generate supporting lex files

lex lex1.l

Compile Files

cc -o comp lex.yy.c y.tab.c SymTab.c Semantics.c CodeGen.c IOMngr.c main.c

Execute the Program

./comp source.txt listing.lst asmCode.asm

Run Locally (Windows / GCC)

Clone the project

git clone https://github.com/Mbiwersi/C-based-Compiler

Go to the project directory

cd my-project

Generate supporting yacc files

bison -dy ExprEval.y

Generate supporting lex files

lex lex1.l

Compile Files

gcc -o comp lex.yy.c y.tab.c SymTab.c Semantics.c CodeGen.c IOMngr.c main.c

Execute the Program

./comp source.txt listing.lst asmCode.asm