runestick 0.9.1

Runescript, a generic stack-based virtual machine for Rust.
Documentation 
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//! The core `std` module.

use crate::{ContextError, Module, Panic, Value};

/// Construct the `std` module.
pub fn module() -> Result<Module, ContextError> {
    let mut module = Module::with_crate("std");

    module.unit("unit")?;
    module.ty::<bool>()?;
    module.ty::<char>()?;
    module.ty::<u8>()?;
    module.ty::<f64>()?;
    module.ty::<i64>()?;

    module.function(&["panic"], panic_impl)?;
    module.function(&["is_readable"], is_readable)?;
    module.function(&["is_writable"], is_writable)?;
    Ok(module)
}

fn panic_impl(m: &str) -> Result<(), Panic> {
    Err(Panic::custom(m.to_owned()))
}

fn is_readable(value: Value) -> bool {
    match value {
        Value::Any(any) => any.is_readable(),
        Value::String(string) => string.is_readable(),
        Value::Bytes(bytes) => bytes.is_readable(),
        Value::Vec(vec) => vec.is_readable(),
        Value::Tuple(tuple) => tuple.is_readable(),
        Value::Object(object) => object.is_readable(),
        Value::UnitStruct(empty) => empty.is_readable(),
        Value::TupleStruct(tuple) => tuple.is_readable(),
        Value::Struct(object) => object.is_readable(),
        Value::Variant(variant) => variant.is_readable(),
        _ => true,
    }
}

fn is_writable(value: Value) -> bool {
    match value {
        Value::Any(any) => any.is_writable(),
        Value::String(string) => string.is_writable(),
        Value::Bytes(bytes) => bytes.is_writable(),
        Value::Vec(vec) => vec.is_writable(),
        Value::Tuple(tuple) => tuple.is_writable(),
        Value::Object(object) => object.is_writable(),
        Value::UnitStruct(empty) => empty.is_writable(),
        Value::TupleStruct(tuple) => tuple.is_writable(),
        Value::Struct(object) => object.is_writable(),
        Value::Variant(variant) => variant.is_writable(),
        _ => true,
    }
}