Feat: Implement Set builtin object

Includes change to Value::hash so that 1i32 == 1f64

closes #400, blocked by #1109

boa/src/builtins/iterable/mod.rs

@@ -3,6 +3,7 @@ use crate::{
     builtins::ArrayIterator,
     builtins::ForInIterator,
     builtins::MapIterator,
+    builtins::SetIterator,
     object::{GcObject, ObjectInitializer},
     property::{Attribute, DataDescriptor},
     BoaProfiler, Context, Result, Value,
@@ -12,6 +13,7 @@ use crate::{
 pub struct IteratorPrototypes {
     iterator_prototype: GcObject,
     array_iterator: GcObject,
+    set_iterator: GcObject,
     string_iterator: GcObject,
     map_iterator: GcObject,
     for_in_iterator: GcObject,
@@ -25,6 +27,7 @@ impl IteratorPrototypes {
                 context,
                 iterator_prototype.clone().into(),
             ),
+            set_iterator: SetIterator::create_prototype(context, iterator_prototype.clone().into()),
             string_iterator: StringIterator::create_prototype(
                 context,
                 iterator_prototype.clone().into(),
@@ -48,6 +51,11 @@ impl IteratorPrototypes {
         self.iterator_prototype.clone()
     }
 
+    #[inline]
+    pub fn set_iterator(&self) -> GcObject {
+        self.set_iterator.clone()
+    }
+
     #[inline]
     pub fn string_iterator(&self) -> GcObject {
         self.string_iterator.clone()

boa/src/builtins/mod.rs

@@ -18,6 +18,7 @@ pub mod nan;
 pub mod number;
 pub mod object;
 pub mod regexp;
+pub mod set;
 pub mod string;
 pub mod symbol;
 pub mod undefined;
@@ -40,6 +41,8 @@ pub(crate) use self::{
     object::for_in_iterator::ForInIterator,
     object::Object as BuiltInObjectObject,
     regexp::RegExp,
+    set::set_iterator::SetIterator,
+    set::Set,
     string::String,
     symbol::Symbol,
     undefined::Undefined,
@@ -76,6 +79,7 @@ pub fn init(context: &mut Context) {
         Date::init,
         Map::init,
         Number::init,
+        Set::init,
         String::init,
         RegExp::init,
         Symbol::init,