[refactoring] update ast structure of "For" node

pkg/ast/visitor/dump.go

@@ -252,12 +252,6 @@ func (v *Dump) Argument(n *ast.Argument) {
 	}
 }
 
-func (v *Dump) StmtAltFor(n *ast.StmtAltFor) {
-	v.printIndentIfNotSingle(v.indent - 1)
-	v.print("&ast.StmtAltFor{\n")
-	v.printNode(n.GetNode())
-}
-
 func (v *Dump) StmtAltForeach(n *ast.StmtAltForeach) {
 	v.printIndentIfNotSingle(v.indent - 1)
 	v.print("&ast.StmtAltForeach{\n")
@@ -414,6 +408,11 @@ func (v *Dump) StmtFor(n *ast.StmtFor) {
 	v.printIndentIfNotSingle(v.indent - 1)
 	v.print("&ast.StmtFor{\n")
 	v.printNode(n.GetNode())
+
+	if n.Alt {
+		v.printIndent(v.indent)
+		v.print("Alt: true,\n")
+	}
 }
 
 func (v *Dump) StmtForeach(n *ast.StmtForeach) {

pkg/ast/visitor/filter_parser_nodes.go

@@ -209,44 +209,6 @@ func (v *FilterParserNodes) ExprVariable(n *ast.ExprVariable) {
 	}
 }
 
-func (v *FilterParserNodes) StmtFor(n *ast.StmtFor) {
-	for k, v := range n.Init {
-		for {
-			if nn, ok := v.(*ast.ParserBrackets); ok {
-				v = nn.Child
-			} else {
-				break
-			}
-		}
-
-		n.Init[k] = v
-	}
-
-	for k, v := range n.Cond {
-		for {
-			if nn, ok := v.(*ast.ParserBrackets); ok {
-				v = nn.Child
-			} else {
-				break
-			}
-		}
-
-		n.Cond[k] = v
-	}
-
-	for k, v := range n.Loop {
-		for {
-			if nn, ok := v.(*ast.ParserBrackets); ok {
-				v = nn.Child
-			} else {
-				break
-			}
-		}
-
-		n.Loop[k] = v
-	}
-}
-
 func (v *FilterParserNodes) ExprAssign(n *ast.ExprAssign) {
 	for {
 		if nn, ok := n.Expr.(*ast.ParserBrackets); ok {

pkg/ast/visitor/filter_tokens.go

@@ -130,3 +130,14 @@ func (v *FilterTokens) StmtDo(n *ast.StmtDo) {
 	n.CloseParenthesisTkn = nil
 	n.SemiColonTkn = nil
 }
+
+func (v *FilterTokens) StmtFor(n *ast.StmtFor) {
+	n.ForTkn = nil
+	n.OpenParenthesisTkn = nil
+	n.InitSemiColonTkn = nil
+	n.CondSemiColonTkn = nil
+	n.CloseParenthesisTkn = nil
+	n.ColonTkn = nil
+	n.EndForTkn = nil
+	n.SemiColonTkn = nil
+}

pkg/ast/visitor/null.go

@@ -54,10 +54,6 @@ func (v *Null) Argument(_ *ast.Argument) {
 	// do nothing
 }
 
-func (v *Null) StmtAltFor(_ *ast.StmtAltFor) {
-	// do nothing
-}
-
 func (v *Null) StmtAltForeach(_ *ast.StmtAltForeach) {
 	// do nothing
 }