An interpreted (toy) language based on reverse polish notation (RPN).
You can compile a standalone interpreter by:
meson setup build
cd build
ninja
You can run it by
./hsilop
Here is how you might write some common expressions in hsilop
| Traditional | hsilop |
|---|---|
| 1 + 2 | 1 2 + |
| 1 + 2 * 3 | 1 2 3 * + |
| (1 + 2) * 3 | 1 2 + 3 * |
| a = 1 | a 1 = |
| a = a + 1 | a a 1 + = |
| if 1 + 2 == 3 then a = 1 | 1 2 + 3 == if a 1 = then |
| if 1 + 2 == 3 then a = 1 else a = 2 | 1 2 + 3 == if a 1 = then a 2 = else |
hsilop is a dynamically typed language. Currently there are three types.
- Int (0, -1, 1, 104, etc.)
- Float (0.0, -1.0, 2.45, .40, etc.)
- Bool (true, false)
Based on literal, type is automatically deduced.
You can do basic operations:
- (Int|Float) (Int|Float) (+|-|*|/|==|!=|>|>=|<|<=)
- Bool Bool (and|or)
- Instead of and and or, you can use && and || respectively.
- Bool not
- You can use ! instead of not.
You can assign values to variable as well:
- VariableName (Value Expression) =
You can do if statements by the following syntax:
- Bool if Expression then
- This is just an if statement. Note that Bool here is any expression outputting boolean value.
- Bool if Expression then Expression else
- This is an if-else statement. The first expression is evaluated if the condition (Bool) is true; otherwise, else statement is evaluated.