修改bnf

src/main/grammar/main.bnf

@@ -151,6 +151,7 @@ InheritDeclaration ::= InheritsKeyword ReferenceIdentifier {
 }
 ComponentBody ::= '{' ComponentElement* '}'{
     pin=1
+    recoverWhile=recoverWhileForComponentBody
 }
 //组件元素定义
 private ComponentElement ::=ChildrenPlaceholder| Property | Callback
@@ -160,11 +161,7 @@ private ComponentElement ::=ChildrenPlaceholder| Property | Callback
                             | RepetitionElement | SubComponent {
                                 recoverWhile(".*")=recoverWhileForComponentBody
                             }
-private recoverWhileForComponentBody::= !(
-                                'property'|'callback'|'changed'
-                                |'states'|'transitions'|'pure'
-                                |'function'|'public'|'protected'|'for'|'if'|'}'|';'|'@'
-                                 |GenericIdentifier|PropertyModifier)
+private recoverWhileForComponentBody::= !('{'|';'|'}'|'@'|GenericIdentifier)
 
 ChildrenPlaceholder ::= '@' 'children'{
     pin=1
@@ -249,7 +246,8 @@ RepetitionIndex ::= '[' LocalVariable ']'{
 //--------------------------------SubElementDeclaration Start---------------------------------------------------
 //子组件结构元素定义
 SubComponent ::= (PropertyName ':=')? ReferenceIdentifier ComponentBody{
-    pin=2
+    pin=3
+    recoverWhile=recoverWhileForComponentBody
 }
 
 //--------------------------------TransitionsDeclaration Start---------------------------------------------------
@@ -298,11 +296,11 @@ CodeBlock ::= '{' Statement* '}'{
     pin=1
 }
 private Statement ::=  (ReturnStatement|IfElseStatement|ExpressionStatement) ';'?{
-    recoverWhile=recoverWhileStatement
+    recoverWhile=recoverWhileForComponentBody
 }
 ExpressionStatement ::= Expression (';' &Statement)?
 
-private recoverWhileStatement::=!(GenericIdentifier|';'|'}')
+//private recoverWhileStatement::=!(GenericIdentifier|';'|'}')
 
 ReturnStatement ::= 'return' (Expression)?{
     pin=1
@@ -331,11 +329,14 @@ private QualifiedNamePropertyBinding::= QualifiedPropertyNameReference ':' Bindi
 PropertyBinding ::= ReferenceIdentifier ':' BindingStatement{
     pin=2
 }
+private WhileIdentifier::=!('}'|GenericIdentifier)
 //优先尝试表达式解析 {}属于代码块   {name:xx}属于表达式，那么需要预测后面两个token,第二个token不是':'的情况下才是代码块
 //所以优先判断对象创建判断，然后进行代码块判断，最后进行表达式
 //代码块分号可选
 //表达式需要分号结尾
-BindingStatement ::=ObjectCreationExpressionWithSem|(CodeBlock ';'?)| ExpressionWithSem
+BindingStatement ::=ObjectCreationExpressionWithSem|(CodeBlock ';'?)| ExpressionWithSem{
+    recoverWhile=WhileIdentifier
+}
 //用于错误的直观化
 private ObjectCreationExpressionWithSem::=ObjectCreationExpression';'{
     pin=1