Phase 3.1-3.3: ReactiveTracker with ElementId assignment during parsing, dependency scanning, variable change notification in app.rs

src/interpreter/types.rs

@@ -3,6 +3,7 @@ use std::collections::HashMap;
 use std::fmt;
 
 
+use super::reactive::{ElementId, ReactiveTracker};
 use super::style::{ComputedStyle, StyleSheet};
 use compact_str::CompactString;
 
@@ -164,6 +165,7 @@ pub struct Element<'a> {
     pub properties: Vec<(Cow<'a, str>, Cow<'a, str>)>,
     pub children:       Vec<Element<'a>>,
     pub computed_style: ComputedStyle,
+    pub element_id:     ElementId,
 }
 
 impl<'a> Element<'a> {
@@ -179,6 +181,17 @@ impl<'a> Element<'a> {
             properties:     Vec::with_capacity(8),
             children:       Vec::with_capacity(4),
             computed_style: ComputedStyle::default(),
+            element_id:     ElementId(u32::MAX),
+        }
+    }
+
+    pub fn new_with_id(type_name: &'a str, id: ElementId) -> Self {
+        Self {
+            type_name,
+            properties:     Vec::with_capacity(8),
+            children:       Vec::with_capacity(4),
+            computed_style: ComputedStyle::default(),
+            element_id:     id,
         }
     }
 }
@@ -198,6 +211,7 @@ pub struct Document<'a> {
     pub rhei_scripts: Vec<String>,
     pub stylesheet:   StyleSheet,
     pub interner:     Interner,
+    pub tracker:      ReactiveTracker,
 }
 
 #[derive(Debug)]