TypeFox Arithmetics DSL
A little calculator language. A file is a module that contains some definitions and some expressions to evaluate.
Basics
Start a file with a module declaration:
module myCalc
After that you can write definitions and evaluations. A definition gives a name to a value or a function, and an evaluation is just an expression that gets computed.
def a: 5;
def b: 3;
def c: a + b;
a + c;
Functions take parameters in parentheses:
def square(x): x * x;
square(4);
Statements end with a semicolon.
Expressions
Expressions support the usual arithmetic operators — addition, subtraction, multiplication, division, power, and modulo. You can use parentheses to group things. Operators follow normal math precedence, so multiplication binds tighter than addition and so on.
Numbers can be integers or decimals.
Notes
- You can call other functions inside a definition, including building functions on top of other functions.
- Symbol names are fairly flexible.