grass/src/builtin/map.rs
2020-04-02 13:49:39 -04:00

100 lines
3.3 KiB
Rust

use std::collections::HashMap;
use super::Builtin;
use crate::common::{Brackets, ListSeparator};
use crate::value::{SassMap, Value};
pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
f.insert(
"map-get".to_owned(),
Box::new(|mut args, _| {
max_args!(args, 2);
let key = arg!(args, 1, "key");
let map = match arg!(args, 0, "map") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map: {} is not a map.", v).into()),
};
Ok(map.get(&key)?.unwrap_or(Value::Null))
}),
);
f.insert(
"map-has-key".to_owned(),
Box::new(|mut args, _| {
max_args!(args, 2);
let key = arg!(args, 1, "key");
let map = match arg!(args, 0, "map") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map: {} is not a map.", v).into()),
};
Ok(Value::bool(map.get(&key)?.is_some()))
}),
);
f.insert(
"map-keys".to_owned(),
Box::new(|mut args, _| {
max_args!(args, 1);
let map = match arg!(args, 0, "map") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map: {} is not a map.", v).into()),
};
Ok(Value::List(
map.keys(),
ListSeparator::Comma,
Brackets::None,
))
}),
);
f.insert(
"map-values".to_owned(),
Box::new(|mut args, _| {
max_args!(args, 1);
let map = match arg!(args, 0, "map") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map: {} is not a map.", v).into()),
};
Ok(Value::List(
map.values(),
ListSeparator::Comma,
Brackets::None,
))
}),
);
f.insert(
"map-merge".to_owned(),
Box::new(|mut args, _| {
max_args!(args, 2);
let mut map1 = match arg!(args, 0, "map1") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map1: {} is not a map.", v).into()),
};
let map2 = match arg!(args, 1, "map2") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map2: {} is not a map.", v).into()),
};
map1.merge(map2);
Ok(Value::Map(map1))
}),
);
f.insert(
"map-remove".to_owned(),
Box::new(|mut args, _| {
let mut map = match arg!(args, 0, "map") {
Value::Map(m) => m,
Value::List(v, ..) if v.is_empty() => SassMap::new(),
v => return Err(format!("$map: {} is not a map.", v).into()),
};
let keys = args.get_variadic()?;
for key in keys {
map.remove(&key);
}
Ok(Value::Map(map))
}),
);
}