A C# / .NET Core implementation of C-like language based on excellent Writing A Compiler In Go book.
- Download and install .NET Core
- Open Terminal
$ git clone https://github.com/michalholasek/monkey-lang-vm.git
- Open Terminal
$ cd <monkey-lang-vm directory>/src$ dotnet run -p Monkey.Repl
Welcome to monkey-lang REPL!
> 5
5
> let let = 5;
unexpected token: let let<-- = 5;
> quit
Exiting monkey-lang REPL...
- C-like syntax
- Integer, boolean, and string primitive data types
- Array and hashtable support
- Variable bindings
- Let and Return statements
- If-Else conditionals
- Basic arithmetic for integer expressions
- First class and higher-order functions, closures
- Built-in utility functions
| Type | Examples |
|---|---|
int |
0, 123, -29 |
boolean |
true, false |
string |
"Astralis" |
array |
[], [1, 2, 3], [fn (x) { return x; }, [], ""] |
hash |
{}, { "key": "value" }, { false: true, 1: "Yes!" } |
> let five = 5;
> five
5
> let ten = 5 + 10 - 5;
> let eleven = 10 * 2 / 2 + 1;
> ten
10
> eleven
11
> let one = 1;
> one
1
> return 42;
42
> if (1 < 2) {
return true;
} else {
return "Alternative.";
}
true
> let fibonacci = fn(x) {
if (x == 0) {
return 0;
} else {
if (x == 1) {
return 1;
} else {
fibonacci(x - 1) + fibonacci(x - 2);
}
}
};
> fibonacci(15);
610
> len("abc")
3
> len([1, 2, 3])
3
> push([1], 2, 3)
[1, 2, 3]
> first([1, 2, 3])
1
> last([1, 2, 3])
3
> rest([1, 2, 3])
[2, 3]
MIT