Upgrade to rbx_dom_weak 2.0 (#377)

* Mostly mechanical port bits

* Almost there

* It builds again!

* Turn on all the code again

* Tests compiling but not passing

* Stub work for value resolution

* Implement resolution minus enums and derived properties

* Implement property descriptor resolution

* Update referent snapshots

* Update unions test project

Using a place file instead of a model yields better
error messages in Roblox Studio.

* Add easy shortcut to testing with local rbx-dom

* Update rbx-dom

* Add enum resolution

* Update init.meta.json to use UnresolvedValue

* Expand value resolution support, add test

* Filter SharedString values from web API

* Add 'property' builder method to InstanceSnapshot

* Change InstanceSnapshot/InstanceBuilder boundary

* Fix remove_file crash

* rustfmt

* Update to latest rbx_dom_lua

* Update dependencies, including rbx_dom_weak

* Update to latest rbx-dom

* Update dependencies

* Update rbx-dom, fixing more bugs

* Remove experimental warning on binary place builds

* Remove unused imports

src/resolution.rs

@@ -0,0 +1,159 @@
+use anyhow::format_err;
+use rbx_dom_weak::types::{
+    Color3, Color3uint8, Content, Enum, Variant, VariantType, Vector2, Vector3,
+};
+use rbx_reflection::{DataType, PropertyDescriptor};
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum UnresolvedValue {
+    FullyQualified(Variant),
+    Ambiguous(AmbiguousValue),
+}
+
+impl UnresolvedValue {
+    pub fn resolve(self, class_name: &str, prop_name: &str) -> anyhow::Result<Variant> {
+        match self {
+            UnresolvedValue::FullyQualified(full) => Ok(full),
+            UnresolvedValue::Ambiguous(partial) => partial.resolve(class_name, prop_name),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum AmbiguousValue {
+    Bool(bool),
+    String(String),
+    Number(f64),
+    Array2([f64; 2]),
+    Array3([f64; 3]),
+    Array4([f64; 4]),
+    Array16([f64; 16]),
+}
+
+impl AmbiguousValue {
+    pub fn resolve(self, class_name: &str, prop_name: &str) -> anyhow::Result<Variant> {
+        let property = find_descriptor(class_name, prop_name)
+            .ok_or_else(|| format_err!("Unknown property {}.{}", class_name, prop_name))?;
+
+        match &property.data_type {
+            DataType::Enum(enum_name) => {
+                let database = rbx_reflection_database::get();
+
+                let enum_descriptor = database.enums.get(enum_name).ok_or_else(|| {
+                    format_err!("Unknown enum {}. This is a Rojo bug!", enum_name)
+                })?;
+
+                let error = |what: &str| {
+                    let sample_values = enum_descriptor
+                        .items
+                        .keys()
+                        .take(3)
+                        .map(|name| format!(r#""{}""#, name))
+                        .collect::<Vec<_>>()
+                        .join(", ");
+
+                    format_err!(
+                        "Invalid value for property {}.{}. Got {} but \
+                         expected a member of the {} enum such as {}",
+                        class_name,
+                        prop_name,
+                        what,
+                        enum_name,
+                        sample_values
+                    )
+                };
+
+                let value = match self {
+                    AmbiguousValue::String(value) => value,
+                    unresolved => return Err(error(unresolved.describe())),
+                };
+
+                let resolved = enum_descriptor
+                    .items
+                    .get(value.as_str())
+                    .ok_or_else(|| error(value.as_str()))?;
+
+                Ok(Enum::from_u32(*resolved).into())
+            }
+            DataType::Value(variant_ty) => match (variant_ty, self) {
+                (VariantType::Bool, AmbiguousValue::Bool(value)) => Ok(value.into()),
+
+                (VariantType::Float32, AmbiguousValue::Number(value)) => Ok((value as f32).into()),
+                (VariantType::Float64, AmbiguousValue::Number(value)) => Ok(value.into()),
+                (VariantType::Int32, AmbiguousValue::Number(value)) => Ok((value as i32).into()),
+                (VariantType::Int64, AmbiguousValue::Number(value)) => Ok((value as i64).into()),
+
+                (VariantType::String, AmbiguousValue::String(value)) => Ok(value.into()),
+                (VariantType::Content, AmbiguousValue::String(value)) => {
+                    Ok(Content::from(value).into())
+                }
+
+                (VariantType::Vector2, AmbiguousValue::Array2(value)) => {
+                    Ok(Vector2::new(value[0] as f32, value[1] as f32).into())
+                }
+
+                (VariantType::Vector3, AmbiguousValue::Array3(value)) => {
+                    Ok(Vector3::new(value[0] as f32, value[1] as f32, value[2] as f32).into())
+                }
+
+                (VariantType::Color3, AmbiguousValue::Array3(value)) => {
+                    Ok(Color3::new(value[0] as f32, value[1] as f32, value[2] as f32).into())
+                }
+                (VariantType::Color3uint8, AmbiguousValue::Array3(value)) => {
+                    let value = Color3uint8::new(
+                        (value[0] / 255.0) as u8,
+                        (value[1] / 255.0) as u8,
+                        (value[2] / 255.0) as u8,
+                    );
+
+                    Ok(value.into())
+                }
+
+                (_, unresolved) => Err(format_err!(
+                    "Wrong type of value for property {}.{}. Expected {:?}, got {}",
+                    class_name,
+                    prop_name,
+                    variant_ty,
+                    unresolved.describe(),
+                )),
+            },
+            _ => Err(format_err!(
+                "Unknown data type for property {}.{}",
+                class_name,
+                prop_name
+            )),
+        }
+    }
+
+    fn describe(&self) -> &'static str {
+        match self {
+            AmbiguousValue::Bool(_) => "a bool",
+            AmbiguousValue::String(_) => "a string",
+            AmbiguousValue::Number(_) => "a number",
+            AmbiguousValue::Array2(_) => "an array of two numbers",
+            AmbiguousValue::Array3(_) => "an array of three numbers",
+            AmbiguousValue::Array4(_) => "an array of four numbers",
+            AmbiguousValue::Array16(_) => "an array of 16 numbers",
+        }
+    }
+}
+
+fn find_descriptor(
+    class_name: &str,
+    prop_name: &str,
+) -> Option<&'static PropertyDescriptor<'static>> {
+    let database = rbx_reflection_database::get();
+    let mut current_class_name = class_name;
+
+    loop {
+        let class = database.classes.get(current_class_name)?;
+        if let Some(descriptor) = class.properties.get(prop_name) {
+            return Some(descriptor);
+        }
+
+        current_class_name = class.superclass.as_deref()?;
+    }
+}