This Is a Programming Language (AN)

It's the first compiler I write. I am building a new own programming language.

	Variables	If/ElseIf/Else	Loop	Function	Recursion
Runtime	✔	✔	✔	✔	✔
Code Generation	✔	✔	✔	✔	✔

Grammar

See the grammar here

Requirements

Python version >= 3 (install python)

Instructions

Open your bash, got to project's root directory and then type python main.py --src tests\fibonacci.an. Type python main.py --help to see more options.
You can write your own algorithm creating a new file new_file.an and then running it as explained above.

Code Generation

source code

loop 7:
print "Hello World"
endloop

is translated to:

namespacean{classProgram{staticvoidMain(){for(inti=0;i<7;i+=1){System.Console.WriteLine("Hello World");}}}}

Abstract Syntax Tree (AST)

You can view AST while compiling

-> Statements
|-> Loop
|-> VarDeclare
|______|______|-> x
|______|-> =
|______|______|-> Num
|______|______|______|-> 0
|______|-> x
|-> <
|______|-> Num
|______|______|-> 10
|______|-> x
|-> =
|______|______|-> x
|______|-> +
|______|______|-> Num
|______|______|______|-> 1
|-> Statements
|______|-> Print
|______|______|-> x

Samples

Fibonacci

declare n = 10
declare t = 0
declare tt = 1
declare nextTerm = 0
loop declare i = 1; i <= n; i = i + 1:
if i == 1:
print t
elseif i == 2:
print tt
endif
nextTerm = t + tt
t = tt
tt = nextTerm
print nextTerm
endloop

Output

Hello World

print "Hello World"

Output

Collections (array)

You still cannot change a value from a collection (contribute for this feature!)

declare collection = [1, 2, 3, 4, 5]
append(collection, 6)
loop declare i = 0; i < count(collection); i = i+1:
print collection[i]
endloop

Output

While

declare x = 0
while x < 10:
x = x + 1
print x
elsewhile x < 20:
x = x + 10
print x
endwhile

Output

Loop (for loop)

Sample 1

loop declare x = 0; x < 10; x = x + 1:
print x
endloop

Output

Sample 2

loop declare i = 0; 10:
print "Hello World " + i
endloop

Output

Sample 3

loop 7:
print "Hello World"
endloop

Output

Author

Alan Nunes da Silva

"Computer Enthusiast just for fun"

E-mail: alann.625@gmail.com
Linkedin: Alan Nunes

Thank you, I hope you like it!