Siyo Language

Provides syntax highlighting and language support for the Siyo programming language.

Features

• Full syntax highlighting for .siyo files
• Keyword, type, and operator highlighting
• String interpolation support ({expr} inside strings)
• Built-in function recognition
• Comment toggling (Ctrl+/)
• Bracket matching and auto-closing
• Code folding

Siyo at a Glance

Siyo is a modern programming language with built-in concurrency primitives, actor-based message passing, and structured concurrency through scope/spawn.

struct Point {
    x: int,
    y: int
}

impl Point {
    fn new(x: int, y: int) -> Point {
        Point { x: x, y: y }
    }

    fn distance(self, other: Point) -> float {
        imut dx = self.x - other.x
        imut dy = self.y - other.y
        toFloat(dx * dx + dy * dy)
    }
}

fn main() {
    imut p1 = Point.new(0, 0)
    imut p2 = Point.new(3, 4)
    println("Distance: {p1.distance(p2)}")
}

Concurrency

actor Counter {
    count: int
}

impl Counter {
    fn new() -> Counter {
        Counter { count: 0 }
    }

    fn increment(self) -> int {
        self.count = self.count + 1
        self.count
    }
}

fn main() {
    imut counter = Counter.new()

    scope {
        spawn counter.increment()
        spawn counter.increment()
    }

    println("Count: {counter.count}")
}

Supported Syntax

Installation

From VS Code Marketplace

Search for "Siyo Language" in the Extensions view (Ctrl+Shift+X).

From VSIX

1. Download the .vsix file from Releases
2. Run: code --install-extension siyo-0.1.0.vsix

Requirements

VS Code 1.75.0 or later.

License

MIT