feat: port el-ui vessels — rename crates→vessels, add El source + manifests

ui/vessels/el-ui-compiler/src/ast.rs

@@ -0,0 +1,93 @@
+//! AST types for el-ui component files.
+
+/// A parsed component definition.
+#[derive(Debug, Clone)]
+pub struct Component {
+    pub name: String,
+    pub props: Vec<PropDef>,
+    pub state: Vec<StateDef>,
+    pub methods: Vec<Method>,
+    pub template: Template,
+}
+
+/// A prop declaration inside `props { ... }`.
+#[derive(Debug, Clone)]
+pub struct PropDef {
+    pub name: String,
+    pub type_name: String,
+    pub default: Option<String>,
+}
+
+/// A state declaration inside `state { ... }`.
+#[derive(Debug, Clone)]
+pub struct StateDef {
+    pub name: String,
+    pub type_name: String,
+    pub initial: String,
+}
+
+/// A method defined with `fn` inside the component body.
+#[derive(Debug, Clone)]
+pub struct Method {
+    pub name: String,
+    pub params: Vec<(String, String)>, // (name, type)
+    pub return_type: String,
+    pub body: String, // raw source text of the body (we pass through verbatim)
+}
+
+/// The template block.
+#[derive(Debug, Clone)]
+pub struct Template {
+    pub nodes: Vec<TemplateNode>,
+}
+
+/// A node within the template tree.
+#[derive(Debug, Clone)]
+pub enum TemplateNode {
+    /// A plain HTML element: `<div class="foo">...</div>`
+    Element {
+        tag: String,
+        attrs: Vec<Attr>,
+        children: Vec<TemplateNode>,
+    },
+    /// A component usage (uppercase first letter): `<Counter />`
+    Component {
+        name: String,
+        props: Vec<Attr>,
+    },
+    /// Literal text content.
+    Text(String),
+    /// An interpolated expression: `{count}`
+    Interpolation(String),
+    /// Conditional: `{#if cond}...{/if}` or `{#if cond}...{:else}...{/if}`
+    If {
+        condition: String,
+        then: Vec<TemplateNode>,
+        else_: Option<Vec<TemplateNode>>,
+    },
+    /// List rendering: `{#each items as item}...{/each}`
+    Each {
+        items: String,
+        item_name: String,
+        children: Vec<TemplateNode>,
+    },
+    /// Semantic activation query: `{#activate "query" as results}...{/activate}`
+    Activate {
+        query: String,
+        result_name: String,
+        children: Vec<TemplateNode>,
+    },
+}
+
+/// An attribute on a template element.
+#[derive(Debug, Clone)]
+pub enum Attr {
+    /// `class="btn"` — static string value
+    Static { name: String, value: String },
+    /// `class={expr}` — dynamic expression
+    Dynamic { name: String, expr: String },
+    /// `on:click={handler}` — event handler
+    EventHandler { event: String, handler: String },
+    /// `disabled={boolExpr}` — boolean attribute
+    BoolAttr { name: String, expr: String },
+}