// clone clones a template Node.
func clone(n parse.Node) parse.Node {
switch t := n.(type) {
case *parse.ActionNode:
return cloneAction(t)
case *parse.IfNode:
b := new(parse.IfNode)
copyBranch(&b.BranchNode, &t.BranchNode)
return b
case *parse.ListNode:
return cloneList(t)
case *parse.RangeNode:
b := new(parse.RangeNode)
copyBranch(&b.BranchNode, &t.BranchNode)
return b
case *parse.TemplateNode:
return cloneTemplate(t)
case *parse.TextNode:
return cloneText(t)
case *parse.WithNode:
b := new(parse.WithNode)
copyBranch(&b.BranchNode, &t.BranchNode)
return b
}
panic("cloning " + n.String() + " is unimplemented")
}
// escape escapes a template node.
func escape(c context, n parse.Node) context {
switch n := n.(type) {
case *parse.ActionNode:
return escapeAction(c, n)
case *parse.IfNode:
return escapeBranch(c, &n.BranchNode, "if")
case *parse.ListNode:
return escapeList(c, n)
case *parse.RangeNode:
return escapeBranch(c, &n.BranchNode, "range")
case *parse.TextNode:
return escapeText(c, n.Text)
case *parse.WithNode:
return escapeBranch(c, &n.BranchNode, "with")
}
// TODO: handle a *parse.TemplateNode. Should Escape take a *template.Set?
panic("escaping " + n.String() + " is unimplemented")
}
// escape escapes a template node.
func (e *escaper) escape(c context, n parse.Node) context {
switch n := n.(type) {
case *parse.ActionNode:
return e.escapeAction(c, n)
case *parse.IfNode:
return e.escapeBranch(c, &n.BranchNode, "if")
case *parse.ListNode:
return e.escapeList(c, n)
case *parse.RangeNode:
return e.escapeBranch(c, &n.BranchNode, "range")
case *parse.TemplateNode:
return e.escapeTemplate(c, n)
case *parse.TextNode:
return e.escapeText(c, n)
case *parse.WithNode:
return e.escapeBranch(c, &n.BranchNode, "with")
}
panic("escaping " + n.String() + " is unimplemented")
}
// escapeNode dispatches to escape<NodeType> helpers by type.
func escapeNode(node parse.Node) {
switch n := node.(type) {
case *parse.ListNode:
escapeListNode(n)
case *parse.TextNode:
// Nothing to do.
case *parse.ActionNode:
escapeActionNode(n)
case *parse.IfNode:
escapeIfNode(n)
case *parse.RangeNode:
escapeRangeNode(n)
case *parse.TemplateNode:
// Nothing to do.
case *parse.WithNode:
escapeWithNode(n)
default:
panic("handling for " + node.String() + " not implemented")
// TODO: Handle other inner node types.
}
}