fix(v3): v-for in scoped slots

packages/uni-template-compiler/__tests__/compiler-app-plus-extra.service.spec.js

@@ -79,6 +79,14 @@ describe('codegen', () => {
       '<current-user>ABCD</current-user>',
       `with(this){return _c('current-user',{attrs:{"_i":0}},[_v("")])}`
     )
+    assertCodegen(
+      `<current-user>
+      <template v-slot:default="{result}">
+        <view v-for="(item,index) in result.list">{{item.name}}</view>
+      </template>
+    </current-user>`,
+      `with(this){return _c('current-user',{attrs:{"_i":0},scopedSlots:_u([{key:"default",fn:function({result}, _svm, _si){return _l((_svm._$s(("2-"+_si),'f',{forItems:result.list})),function(item,index,$20,$30){return _c('view',{key:_svm._$s(("2-"+_si),'f',{forIndex:$20,key:("2-"+_si)+'-'+$30}),attrs:{"_i":(("2-"+_si)+$30)}},[_v((_svm._$s((("2-"+_si)+$30),'t0',_s(item.name))))])})}}])})}`
+    )
   })
 
   it('generate keep-alive', () => {

packages/uni-template-compiler/__tests__/demo.js

 const compiler = require('../lib')
 const res = compiler.compile(
   `
-<foo><template v-if="show" #default="bar">{{ bar }}</template></foo>
+<current-user>
+  <template v-slot:default="{result}">
+    <view v-for="(item,index) in result.list">{{item.name}}</view>
+  </template>
+</current-user>
 `, {
     resourcePath: '/User/fxy/Documents/test.wxml',
     isReservedTag: function (tag) {
@@ -14,7 +18,7 @@ const res = compiler.compile(
       platform: 'app-plus'
     },
     filterModules: ['swipe'],
-    // service: true,
+    service: true,
     view: true
 
   })

packages/uni-template-compiler/lib/app/service.js

@@ -100,7 +100,7 @@ function transformNode (el, parent, state, isScopedSlot) {
 
   parseIs(el, genVar)
   parseFor(el, createGenVar, isScopedSlot)
-  parseKey(el)
+  parseKey(el, isScopedSlot)
 
   parseIf(el, createGenVar, isScopedSlot)
   parseBinding(el, genVar)

packages/uni-template-compiler/lib/app/util.js

@@ -119,6 +119,9 @@ function updateScopedSlotEleId (el, state) {
       }
       const it = '_si'
       const newId = getNewId(el.attrsMap[ID], it)
+      if (el.forId) {
+        el.forId = getNewId(el.forId, it)
+      }
       addRawAttr(el, ID, newId)
       if (el.attrs) {
         const attr = el.attrs.find(attr => attr.name === ID)