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33 lines
674 B
Go
33 lines
674 B
Go
package parse
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import "fmt"
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// ListNode serially executes a list of child nodes.
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type ListNode struct {
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NodeType `json:"type"`
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// Body is the list of child nodes
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Body []Node `json:"body"`
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}
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// NewListNode returns a new ListNode.
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func NewListNode() *ListNode {
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return &ListNode{NodeType: NodeList}
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}
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// Append appens a child node to the list.
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func (n *ListNode) Append(node Node) *ListNode {
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n.Body = append(n.Body, node)
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return n
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}
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func (n *ListNode) Validate() error {
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switch {
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case n.NodeType != NodeList:
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return fmt.Errorf("List Node uses an invalid type")
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case len(n.Body) == 0:
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return fmt.Errorf("List Node body is empty")
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default:
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return nil
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}
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}
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