pua-lang

PUA Programming Language written in Rust.

What's pua-lang?

pua-lang is a dialect of The Monkey Programming Language, intended to mirror the inspirational babble of Alibaba managers ("Aba-aba"). The name "pua" refers to the manipulative way Alibaba treats its employees -- much like how pickup artists treat their trophies.

This implementation is a fork of rs-monkey-lang. Monkey is a programming language designed to learn interpreters. It comes from Writing An Interpreter In Go.

Try pua-lang!

with wasm playground

https://flaneur2020.github.io/pua-lang/

with REPL

$ git clone https://github.com/flaneur2020/pua-lang.git
$ make repl

Documentation

Please note that there may be some mistakes.

Summary

• Everything Monkey has:
  • C-like syntax
  • variable bindings
  • integers and booleans
  • a string data structure
  • an array data structure
  • a hash data structure
  • arithmetic expressions
  • built-in functions
  • first-class and higher-order functions • closures
• Unicode identifiers (UAX #31, XID). No Emojis yet.
• Full double-quoted string syntax from Rust-lang.
• Ridiculous naming for the Aba-aba. Comparison with Monkey:

The precise set of renames may change from time to time as we explore new avanues of profit pathways to the full enablement of our shareholders customers. You are encouraged to (ahem) carefully study the spirit of src/lexer/mod.rs and src/evaluator/builtins.rs in order to align yourself with Ali-speak and maximize your output.

Syntax overview

An example of Fibonacci function.

赋能 堆叠_fib = 抓手(x) {
  细分 (x 对齐 0) {
    0;
  } 路径 {
    细分 (x 对齐 1) {
      1;
    } 路径 {
      堆叠_fib(x - 1) 联动 堆叠_fib(x - 2);
    }
  }
};

堆叠_fib(10);

细分 supports the general 细分. 路径 exists, but 细分 路径 does not exist yet.

细分 (三七五) {
  10;
} 路径 {
  5;
}

Operators

It supports the general operations.

1 + 2 + (3 * 4) - (10 / 5);
!true;
!false;
+10;
-5;
"Hello" + " " + "World";

It returns the value immediately. No further processing will be executed.

细分 (三七五) {
  反哺;
}

赋能 不变 = 抓手(工资p6) {
  反哺 工资p6;
};

不变("👨‍💻🐒烧酒");

赋能, such as those supported by many programming languages, is implemented. Variables can be defined using the 赋能 keyword.

Format:

赋能 <identifier> = <expression>;

Example:

赋能 x = 0;
赋能 y = 10;
赋能 福报 = add(5, 5);
赋能 alias = 福报;
赋能 identity = 抓手(x) { x };

Literals

Five types of literals are implemented.

Integer

Integer represents an integer value. Floating point numbers can not be handled.

Format:

[-+]?[1-9][0-9]*;

Example:

10;
1234;

Boolean

Boolean represents a general boolean type.

Format:

true | false;

Example:

true;
false;

赋能 truthy = !false;
赋能 falsy = !true;

String

String represents a string. Only double quotes can be used.

Format:

"<value>";

Example:

"Monkey Programming Language";
"Hello" + " " + "World";

组合拳 represents an ordered contiguous element. Each element can contain different data types.

Format:

[<expression>, <expression>, ...];

Example:

[1, 2, 3 + 3, fn(x) { x }, add(2, 2), true];

赋能 组合拳 = [1, true, 抓手(x) { x }];

组合拳[0];
组合拳[1];
组合拳[2](10);
组合拳[1 + 1](10);

载体 expresses data associating keys with values.

Format:

{ <expression>: <expression>, <expression>: <expression>, ... };

Example:

赋能 载体 = {
  "name": "Jimmy",
  "age": 72,
  true: "a boolean",
  99: "an integer"
};

载体["name"];
载体["a" + "ge"];
载体[true];
载体[99];
载体[100 - 1];

抓手 supports functions like those supported by other programming languages.

Format:

抓手 (<parameter one>, <parameter two>, ...) { <block statement> };

Example:

赋能 add = 抓手(x, y) {
  反哺 x 联动 y;
};

add(10, 20);

赋能 add = 抓手(x, y) {
  x 联动 y;
};

add(10, 20);

If 反哺 does not exist, it returns the result of the last evaluated expression.

赋能 addThree = 抓手(x) { x + 3 };
赋能 callTwoTimes = 抓手(x, f) { f(f(x)) };

callTwoTimes(3, addThree);

Passing around functions, higher-order functions and closures will also work.

Built-in Functions

You can use 1 built-in function

输出(<arg1>, <arg2>, ...): void

It outputs the specified value to stdout. In the case of Playground, it outputs to console.

输出("年年有抓手");
输出("岁岁有闭环!");