wip(compiler): improve node stringification to support adjacent nodes

packages/compiler-core/src/ast.ts

@@ -194,6 +194,11 @@ export interface SimpleExpressionNode extends Node {
   content: string
   isStatic: boolean
   isConstant: boolean
+  /**
+   * Indicates this is an identifier for a hoist vnode call and points to the
+   * hoisted node.
+   */
+  hoisted?: JSChildNode
   /**
    * an expression parsed as the params of a function will track
    * the identifiers declared inside the function body.

packages/compiler-core/src/options.ts

@@ -1,4 +1,4 @@
-import { ElementNode, Namespace, JSChildNode, PlainElementNode } from './ast'
+import { ElementNode, Namespace, TemplateChildNode } from './ast'
 import { TextModes } from './parse'
 import { CompilerError } from './errors'
 import {
@@ -52,9 +52,9 @@ export interface ParserOptions {
 }
 
 export type HoistTransform = (
-  node: PlainElementNode,
+  children: TemplateChildNode[],
   context: TransformContext
-) => JSChildNode
+) => void
 
 export interface TransformOptions {
   /**

packages/compiler-core/src/transform.ts

@@ -230,12 +230,14 @@ export function createTransformContext(
     },
     hoist(exp) {
       context.hoists.push(exp)
-      return createSimpleExpression(
+      const identifier = createSimpleExpression(
         `_hoisted_${context.hoists.length}`,
         false,
         exp.loc,
         true
       )
+      identifier.hoisted = exp
+      return identifier
     },
     cache(exp, isVNode = false) {
       return createCacheExpression(++context.cached, exp, isVNode)

packages/compiler-core/src/transforms/hoistStatic.ts

@@ -54,10 +54,7 @@ function walk(
         // whole tree is static
         ;(child.codegenNode as VNodeCall).patchFlag =
           PatchFlags.HOISTED + (__DEV__ ? ` /* HOISTED */` : ``)
-        const hoisted = context.transformHoist
-          ? context.transformHoist(child, context)
-          : child.codegenNode!
-        child.codegenNode = context.hoist(hoisted)
+        child.codegenNode = context.hoist(child.codegenNode!)
         continue
       } else {
         // node may contain dynamic children, but its props may be eligible for
@@ -100,6 +97,10 @@ function walk(
       }
     }
   }
+
+  if (context.transformHoist) {
+    context.transformHoist(children, context)
+  }
 }
 
 export function isStaticNode(