work on optimizing web implementation

packages/interpreter/src/bindings.rs

@@ -73,4 +73,7 @@ extern "C" {
 
     #[wasm_bindgen(method)]
     pub fn PushRoot(this: &Interpreter, id: u32);
+
+    #[wasm_bindgen(method)]
+    pub fn AppendChildren(this: &Interpreter, id: u32, m: u32);
 }

packages/interpreter/src/interpreter.js

@@ -92,8 +92,8 @@ export class Interpreter {
   PopRoot() {
     this.stack.pop();
   }
-  AppendChildren(many) {
-    let root = this.stack[this.stack.length - (1 + many)];
+  AppendChildren(id, many) {
+    let root = this.nodes[id];
     let to_add = this.stack.splice(this.stack.length - many);
     for (let i = 0; i < many; i++) {
       root.appendChild(to_add[i]);

packages/interpreter/src/lib.rs

@@ -1,5 +1,10 @@
 pub static INTERPRETER_JS: &str = include_str!("./interpreter.js");
 
+#[cfg(feature = "web")]
+mod sledgehammer_bindings;
+#[cfg(feature = "web")]
+pub use sledgehammer_bindings::*;
+
 #[cfg(feature = "web")]
 mod bindings;
 

packages/interpreter/src/sledgehammer_bindings.rs

@@ -0,0 +1,221 @@
+use js_sys::Function;
+use sledgehammer_bindgen::bindgen;
+use web_sys::Node;
+
+#[bindgen]
+mod js {
+    const JS: &str = r#"
+    class ListenerMap {
+        constructor(root) {
+            // bubbling events can listen at the root element
+            this.global = {};
+            // non bubbling events listen at the element the listener was created at
+            this.local = {};
+            this.root = null;
+            this.handler = null;
+        }
+
+        create(event_name, element, bubbles) {
+            if (bubbles) {
+                if (this.global[event_name] === undefined) {
+                    this.global[event_name] = {};
+                    this.global[event_name].active = 1;
+                    this.root.addEventListener(event_name, this.handler);
+                } else {
+                    this.global[event_name].active++;
+                }
+            }
+            else {
+                const id = element.getAttribute("data-dioxus-id");
+                if (!this.local[id]) {
+                    this.local[id] = {};
+                }
+                element.addEventListener(event_name, this.handler);
+            }
+        }
+
+        remove(element, event_name, bubbles) {
+            if (bubbles) {
+                this.global[event_name].active--;
+                if (this.global[event_name].active === 0) {
+                    this.root.removeEventListener(event_name, this.global[event_name].callback);
+                    delete this.global[event_name];
+                }
+            }
+            else {
+                const id = element.getAttribute("data-dioxus-id");
+                delete this.local[id][event_name];
+                if (this.local[id].length === 0) {
+                    delete this.local[id];
+                }
+                element.removeEventListener(event_name, this.handler);
+            }
+        }
+
+        removeAllNonBubbling(element) {
+            const id = element.getAttribute("data-dioxus-id");
+            delete this.local[id];
+        }
+    }
+    function SetAttributeInner(node, field, value, ns) {
+        const name = field;
+        if (ns === "style") {
+            // ????? why do we need to do this
+            if (node.style === undefined) {
+                node.style = {};
+            }
+            node.style[name] = value;
+        } else if (ns !== null && ns !== undefined && ns !== "") {
+            node.setAttributeNS(ns, name, value);
+        } else {
+            switch (name) {
+                case "value":
+                    if (value !== node.value) {
+                        node.value = value;
+                    }
+                    break;
+                case "checked":
+                    node.checked = value === "true";
+                    break;
+                case "selected":
+                    node.selected = value === "true";
+                    break;
+                case "dangerous_inner_html":
+                    node.innerHTML = value;
+                    break;
+                default:
+                    // https://github.com/facebook/react/blob/8b88ac2592c5f555f315f9440cbb665dd1e7457a/packages/react-dom/src/shared/DOMProperty.js#L352-L364
+                    if (value === "false" && bool_attrs.hasOwnProperty(name)) {
+                        node.removeAttribute(name);
+                    } else {
+                        node.setAttribute(name, value);
+                    }
+            }
+        }
+    }
+    function LoadChild(ptr, len) {
+        // iterate through each number and get that child
+        node = stack[stack.length - 1];
+        ptr_end = ptr + len;
+        for (; ptr < ptr_end; ptr++) {
+            end = m.getUint8(ptr);
+            for (node = node.firstChild; end > 0; end--) {
+                node = node.nextSibling;
+            }
+        }
+        return node;
+    }
+    const listeners = new ListenerMap();
+    let nodes = [];
+    let stack = [];
+    const templates = {};
+    let node, els, end, ptr_end, k;
+    export function save_template(nodes, tmpl_id) {
+        templates[tmpl_id] = nodes;
+    }
+    export function set_node(id, node) {
+        nodes[id] = node;
+    }
+    export function initilize(root, handler) {
+        listeners.handler = handler;
+        nodes = [root];
+        stack = [root];
+        listeners.root = root;
+    }
+    function AppendChildren(id, many){
+        root = nodes[id];
+        els = stack.splice(stack.length-many);
+        for (k = 0; k < many; k++) {
+            root.appendChild(els[k]);
+        }
+    }
+    "#;
+
+    extern "C" {
+        #[wasm_bindgen]
+        pub fn save_template(nodes: Vec<Node>, tmpl_id: u32);
+
+        #[wasm_bindgen]
+        pub fn set_node(id: u32, node: Node);
+
+        #[wasm_bindgen]
+        pub fn initilize(root: Node, handler: &Function);
+    }
+
+    fn mount_to_root() {
+        "{AppendChildren(root, stack.length-1);}"
+    }
+    fn push_root(root: u32) {
+        "{stack.push(nodes[$root$]);}"
+    }
+    fn append_children(id: u32, many: u32) {
+        "{AppendChildren($id$, $many$);}"
+    }
+    fn pop_root() {
+        "{stack.pop();}"
+    }
+    fn replace_with(id: u32, n: u32) {
+        "{root = nodes[$id$]; els = stack.splice(stack.length-$n$); if (root.listening) { listeners.removeAllNonBubbling(root); } root.replaceWith(...els);}"
+    }
+    fn insert_after(id: u32, n: u32) {
+        "{nodes[$id$].after(...stack.splice(stack.length-$n$));}"
+    }
+    fn insert_before(id: u32, n: u32) {
+        "{nodes[$id$].before(...stack.splice(stack.length-$n$));}"
+    }
+    fn remove(id: u32) {
+        "{node = nodes[$id$]; if (node !== undefined) { if (node.listening) { listeners.removeAllNonBubbling(node); } node.remove(); }}"
+    }
+    fn create_raw_text(text: &str) {
+        "{stack.push(document.createTextNode($text$));}"
+    }
+    fn create_text_node(text: &str, id: u32) {
+        "{node = document.createTextNode($text$); nodes[$id$] = node; stack.push(node);}"
+    }
+    fn create_placeholder(id: u32) {
+        "{node = document.createElement('pre'); node.hidden = true; stack.push(node); nodes[$id$] = node;}"
+    }
+    fn new_event_listener(event_name: &str<u8, evt>, id: u32, bubbles: u8) {
+        r#"node = nodes[id]; if(node.listening){node.listening += 1;}else{node.listening = 1;} node.setAttribute('data-dioxus-id', `\${id}`); listeners.create($event_name$, node, $bubbles$);"#
+    }
+    fn remove_event_listener(event_name: &str<u8, evt>, id: u32, bubbles: u8) {
+        "{node = nodes[$id$]; node.listening -= 1; node.removeAttribute('data-dioxus-id'); listeners.remove(node, $event_name$, $bubbles$);}"
+    }
+    fn set_text(id: u32, text: &str) {
+        "{nodes[$id$].textContent = $text$;}"
+    }
+    fn set_attribute(id: u32, field: &str<u8, attr>, value: &str, ns: &str<u8, ns_cache>) {
+        "{node = nodes[$id$]; SetAttributeInner(node, $field$, $value$, $ns$);}"
+    }
+    fn remove_attribute(id: u32, field: &str<u8, attr>, ns: &str<u8, ns_cache>) {
+        r#"{name = $field$;
+        node = this.nodes[$id$];
+        if (ns == "style") {
+            node.style.removeProperty(name);
+        } else if (ns !== null && ns !== undefined && ns !== "") {
+            node.removeAttributeNS(ns, name);
+        } else if (name === "value") {
+            node.value = "";
+        } else if (name === "checked") {
+            node.checked = false;
+        } else if (name === "selected") {
+            node.selected = false;
+        } else if (name === "dangerous_inner_html") {
+            node.innerHTML = "";
+        } else {
+            node.removeAttribute(name);
+        }}"#
+    }
+    fn assign_id(ptr: u32, len: u8, id: u32) {
+        "{nodes[$id$] = LoadChild($ptr$, $len$);}"
+    }
+    fn hydrate_text(ptr: u32, len: u8, value: &str, id: u32) {
+        "{node = LoadChild($ptr$, $len$); node.textContent = $value$; nodes[$id$] = node;}"
+    }
+    fn replace_placeholder(ptr: u32, len: u8, n: u32) {
+        "{els = stack.splice(stack.length - $n$); node = LoadChild($ptr$, $len$); node.replaceWith(...els);}"
+    }
+    fn load_template(tmpl_id: u32, index: u32, id: u32) {
+        "{node = templates[$tmpl_id$][$index$].cloneNode(true); nodes[$id$] = node; stack.push(node);}"
+    }
+}