rhai/src/packages/map_basic.rs
2020-10-15 22:11:18 +08:00

59 lines
1.6 KiB
Rust

#![cfg(not(feature = "no_object"))]
use crate::any::Dynamic;
use crate::def_package;
use crate::engine::Map;
use crate::parser::{ImmutableString, INT};
use crate::plugin::*;
#[cfg(not(feature = "no_index"))]
use crate::engine::Array;
def_package!(crate:BasicMapPackage:"Basic object map utilities.", lib, {
combine_with_exported_module!(lib, "map", map_functions);
});
#[export_module]
mod map_functions {
pub fn has(map: &mut Map, prop: ImmutableString) -> bool {
map.contains_key(&prop)
}
pub fn len(map: &mut Map) -> INT {
map.len() as INT
}
pub fn clear(map: &mut Map) {
map.clear();
}
pub fn remove(x: &mut Map, name: ImmutableString) -> Dynamic {
x.remove(&name).unwrap_or_else(|| ().into())
}
#[rhai_fn(name = "mixin", name = "+=")]
pub fn mixin(map1: &mut Map, map2: Map) {
map2.into_iter().for_each(|(key, value)| {
map1.insert(key, value);
});
}
#[rhai_fn(name = "+")]
pub fn merge(mut map1: Map, map2: Map) -> Map {
map2.into_iter().for_each(|(key, value)| {
map1.insert(key, value);
});
map1
}
pub fn fill_with(map1: &mut Map, map2: Map) {
map2.into_iter().for_each(|(key, value)| {
map1.entry(key).or_insert(value);
});
}
#[cfg(not(feature = "no_index"))]
pub mod indexing {
pub fn keys(map: &mut Map) -> Array {
map.iter().map(|(k, _)| k.clone().into()).collect()
}
pub fn values(map: &mut Map) -> Array {
map.iter().map(|(_, v)| v.clone()).collect()
}
}
}