squarejellyfish / pasic

Pasic

Basic-ish language in Python implemented from scratch. Compiled to x86_64 native instruction set.

Heavily inspired by Rexim @TsodingDaily

Usage

python pasic.py <input_file>

Milestones

• Compiled to native x86_64
• Generate AST
• Error reporting on syntax and (some) logical error
• Turing Complete (check ./tests/5-rule110.pasic)
• Simulate Game of Life (check ./examples/gol.pasic)

Examples

Hello, world

print("hello, world!")

Variables

let x = 1
let s = "string is pointer"

print(x)
print(s)

x = 69
print(x)
print("variables re-assignment")

Arithmetics

let x = (12 + 8) * 3 - 20 / 4

print(x) ' 55

Bitwise Operation

print(1 << 4) ' 16
print(16 >> 2) ' 4
print(1024 | 1) ' 1025
print(1025 ^ 1) ' 1024
print(1025 & 1) ' 1

Condition and Loops

let x = 1

if x == 1 then
    print("x is 1")
else
    print("x is not 1")
end

if x > 0 then
    print("x greater than 0")
else if x < 100 then
    print("else if")
end

if x then
    print("ident expression will also evaluate")
end

x = 100
while x do ' only while loop for now
    print(x)
    x = x - 1
end

Printing from 1 to 99:

let x = 1
while x < 100 do
    print(x)
    x = x + 1
end

Macros

macro x 10 end

print(x) // 10

macro print_something(arg)
    print("in macro")
    print(arg)
end

print_something(" hello\n") // in macro hello\n

Functions

func add(a, b)
    return a + b
end

print(add(1, 2)) // 3