harn-vm 0.7.30

Async bytecode virtual machine for the Harn programming language
Documentation 
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use std::collections::BTreeMap;

use crate::value::VmValue;

pub(crate) fn opt_str(options: &Option<BTreeMap<String, VmValue>>, key: &str) -> Option<String> {
    options.as_ref()?.get(key).map(|v| v.display())
}

pub(crate) fn opt_int(options: &Option<BTreeMap<String, VmValue>>, key: &str) -> Option<i64> {
    options.as_ref()?.get(key)?.as_int()
}

pub(crate) fn opt_float(options: &Option<BTreeMap<String, VmValue>>, key: &str) -> Option<f64> {
    options.as_ref()?.get(key).and_then(|v| match v {
        VmValue::Float(f) => Some(*f),
        VmValue::Int(i) => Some(*i as f64),
        _ => None,
    })
}

pub(crate) fn opt_bool(options: &Option<BTreeMap<String, VmValue>>, key: &str) -> bool {
    options
        .as_ref()
        .and_then(|o| o.get(key))
        .map(|v| v.is_truthy())
        .unwrap_or(false)
}