compile-expr | ||
examples | ||
plans | ||
ppp | ||
.gitignore | ||
dump_tokens.py | ||
ppp_ast.py | ||
ppp_interpreter.py | ||
ppp_lexer.py | ||
ppp_object.py | ||
ppp_parser.py | ||
ppp_stdlib.py | ||
ppp_tokens.py | ||
ppp_types.py | ||
ppp.py | ||
README.md |
Python++
I created this language as a result of my frustrations with Python.
Currently my language is significantly worse than Python, and needs a lot of work before it can be considered functional.
Hello World
print("Hello, World!\n");
The following is a non-comprehensive list of stuff that currently works.
Assignment & Declaration
a: str = "Hello, World!\n";
b: int = 0;
c: str; // declared, but not yet assigned
Expressions
a: int = 34;
b: int = 35;
c: int = 1;
d: int = a + b * c; // with correct operator precedence
Structs
struct MyStruct {
field1: int,
field2: str,
field3: SomeOtherStruct
}
my_struct: MyStruct = MyStruct.{
field1=1,
field2="Hello, World!",
field3=SomeOtherStruct.{...} // whatever SomeOtherStruct takes
};
my_struct.field1 = 2;
plus5: int = my_struct.field1 + 5;
Enums
enum Weekday {
Monday,
Tuesday,
Wednesday,
Thursday,
Friday,
Saturday,
Sunday
}
day: Weekday = Weekday.Tuesday;
match day in {
case Monday { ... } // handle Monday
case Tuesday { ... } // handle Tuesday
case Wednesday { ... } // and so on...
case Thursday { ... }
case Friday { ... }
case _ { ... } // default
}
or
enum IntResult {
Ok(int),
Err(Error)
}
result: IntResult = IntResult.Ok(5);
match result in {
case Ok(num) { ... } // num is defined in this scope
case Err(err) { ... } // similarly err is defined in this scope
}
Currently, polymorphic structs/enums are not supported, however I plan to eventually do so.
Functions
func random_number(seed: int) -> int {
return 42;
}
my_random_number: int = random_number(69);
func min(a: int, b: int) -> int {
if a < b return a;
return b;
}
the_min: int = min(5, 10);
Arrays
numbers: int[] = [:int, 0, 1, 2, 3, 4]; // array literal must state element type (for now)
numbers = [:int, 2*x for x in numbers]; // list comprehension must also (for now)
For loops
// prints numbers 0-9
for i in range(0, 10) {
print(int_to_str(i)+"\n");
}
While loops
a: int = 0; while a < 10 { print(int_to_str(a)+"\n"); a = a + 1; }