Split core and standard libraries into packages.

src/packages/map_basic.rs

@@ -0,0 +1,75 @@
+use super::{
+    create_new_package, reg_binary, reg_binary_mut, reg_unary_mut, Package, PackageLibrary,
+    PackageLibraryStore,
+};
+
+use crate::any::Dynamic;
+use crate::engine::Map;
+use crate::fn_register::map_dynamic as map;
+use crate::parser::INT;
+
+use crate::stdlib::ops::Deref;
+
+pub struct BasicMapPackage(PackageLibrary);
+
+impl Deref for BasicMapPackage {
+    type Target = PackageLibrary;
+
+    fn deref(&self) -> &PackageLibrary {
+        &self.0
+    }
+}
+
+impl Package for BasicMapPackage {
+    fn new() -> Self {
+        let mut pkg = create_new_package();
+        Self::init(&mut pkg);
+        Self(pkg.into())
+    }
+
+    fn get(&self) -> PackageLibrary {
+        self.0.clone()
+    }
+
+    fn init(lib: &mut PackageLibraryStore) {
+        // Register map functions
+        #[cfg(not(feature = "no_object"))]
+        {
+            reg_binary_mut(
+                lib,
+                "has",
+                |map: &mut Map, prop: String| map.contains_key(&prop),
+                map,
+            );
+            reg_unary_mut(lib, "len", |map: &mut Map| map.len() as INT, map);
+            reg_unary_mut(lib, "clear", |map: &mut Map| map.clear(), map);
+            reg_binary_mut(
+                lib,
+                "remove",
+                |x: &mut Map, name: String| x.remove(&name).unwrap_or_else(|| Dynamic::from_unit()),
+                map,
+            );
+            reg_binary_mut(
+                lib,
+                "mixin",
+                |map1: &mut Map, map2: Map| {
+                    map2.into_iter().for_each(|(key, value)| {
+                        map1.insert(key, value);
+                    });
+                },
+                map,
+            );
+            reg_binary(
+                lib,
+                "+",
+                |mut map1: Map, map2: Map| {
+                    map2.into_iter().for_each(|(key, value)| {
+                        map1.insert(key, value);
+                    });
+                    map1
+                },
+                map,
+            );
+        }
+    }
+}