Language Features

• Integer scale variables itg x
• 1-D array of integers itg a[] = {1, 2, 3}
• Assignment statements itg x = 5
• Arithmetic operators

itg x
x = 3 + 2

• Relational operators

itg x
itg y

x = 5
y = 3

if(x > 6){ }

• While or do-while loops

itg x
itg y

x = 5
y = 3

whl (x != y) {
  x = x - 1
}

• Break statement

bln flag = true 

whl (flag) {
  brk
}

• If-then-else statements

itg a = 10
itg b = 5

if(a > b) {
  out(a)
}elf(a == b) {
  out(b)
}els{
  out(a)
}

• Read and write statements

itg a = 3
in(a)
out(a)

• Comments @ block comment @

@@
THIS IS MULTI LINE COMMENT
@@

• Function

fnc sum3 (itg a,itg b,itg c) {
  ret a + b + c
}
sum3(1,2,3)

Code Generator

This part of the project translates parsed code into intermediate representation (IR), so that we can further translate it into assembly language later on.

The generated IR will be in .mil format.

The following command will generate the compiler binary for our language compilot:

You can either manually type the following command OR using our included compile.sh file.

bison -v -d --file-prefix=y compilot.y
flex compilot.lex
g++ -std=c++11 -o cplt y.tab.c lex.yy.c -lfl

For MacOS Users: Replace -lfl with -ll

bison -v -d --file-prefix=y compilot.y
flex compilot.lex
g++ -std=c++11 -o cplt y.tab.c lex.yy.c -ll

Once the compiler binary has been generated, we can generate the IR using the following command:

./cplt code.cplt

Once IR has been generated, we can run it using the included mil_run binary file with the following command:

./mil_run mil_code.mil.

Note: Since mil_run is an x64 binary, this can only be done on an x64 machine.

Demo Video:

https://youtu.be/fdEdgnj5qgQ