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@@ -328,3 +328,110 @@ impl Scope {
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}
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}
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}
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+
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+/// render the scope to a string using the rsx! syntax
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+pub(crate) struct ScopeRenderer<'a> {
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+ pub skip_components: bool,
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+ pub show_fragments: bool,
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+ pub _scope: &'a Scope,
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+ pub _pre_render: bool,
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+ pub _newline: bool,
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+ pub _indent: bool,
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+ pub _max_depth: usize,
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+}
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+
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+// this is more or less a debug tool, but it'll render the entire tree to the terminal
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+impl<'a> ScopeRenderer<'a> {
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+ pub fn render(
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+ &self,
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+ vdom: &VirtualDom,
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+ node: &VNode,
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+ f: &mut std::fmt::Formatter,
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+ il: u16,
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+ ) -> std::fmt::Result {
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+ const INDENT: &str = " ";
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+ let write_indent = |_f: &mut std::fmt::Formatter, le| {
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+ for _ in 0..le {
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+ write!(_f, "{}", INDENT).unwrap();
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+ }
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+ };
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+
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+ match &node {
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+ VNode::Text(text) => {
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+ write_indent(f, il);
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+ write!(f, "\"{}\"\n", text.text)?
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+ }
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+ VNode::Anchor(anchor) => {
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+ write_indent(f, il);
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+ write!(f, "Anchor {{}}\n")?;
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+ }
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+ VNode::Element(el) => {
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+ write_indent(f, il);
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+ write!(f, "{} {{\n", el.tag_name)?;
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+ // write!(f, "element: {}", el.tag_name)?;
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+ let mut attr_iter = el.attributes.iter().peekable();
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+
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+ while let Some(attr) = attr_iter.next() {
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+ match attr.namespace {
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+ None => {
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+ //
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+ write_indent(f, il + 1);
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+ write!(f, "{}: \"{}\"\n", attr.name, attr.value)?
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+ }
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+
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+ Some(ns) => {
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+ // write the opening tag
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+ write_indent(f, il + 1);
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+ write!(f, " {}:\"", ns)?;
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+ let mut cur_ns_el = attr;
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+ 'ns_parse: loop {
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+ write!(f, "{}:{};", cur_ns_el.name, cur_ns_el.value)?;
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+ match attr_iter.peek() {
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+ Some(next_attr) if next_attr.namespace == Some(ns) => {
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+ cur_ns_el = attr_iter.next().unwrap();
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+ }
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+ _ => break 'ns_parse,
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+ }
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+ }
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+ // write the closing tag
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+ write!(f, "\"")?;
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+ }
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+ }
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+ }
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+
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+ for child in el.children {
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+ self.render(vdom, child, f, il + 1)?;
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+ }
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+ write_indent(f, il);
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+
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+ write!(f, "}}\n")?;
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+ }
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+ VNode::Fragment(frag) => {
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+ if self.show_fragments {
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+ write_indent(f, il);
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+ write!(f, "Fragment {{\n")?;
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+ for child in frag.children {
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+ self.render(vdom, child, f, il + 1)?;
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+ }
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+ write_indent(f, il);
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+ write!(f, "}}\n")?;
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+ } else {
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+ for child in frag.children {
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+ self.render(vdom, child, f, il)?;
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+ }
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+ }
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+ }
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+ VNode::Component(vcomp) => {
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+ let idx = vcomp.associated_scope.get().unwrap();
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+ if !self.skip_components {
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+ let new_node = vdom.get_scope(idx).unwrap().root_node();
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+ self.render(vdom, new_node, f, il)?;
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+ }
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+ }
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+ VNode::Suspended { .. } => {
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+ // we can't do anything with suspended nodes
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+ }
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+ }
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+ Ok(())
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+ }
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+}
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