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31 lines
639 B
Go
31 lines
639 B
Go
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package parse
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const (
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NodeList = "list"
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NodeDefer = "defer"
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NodeError = "error"
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NodeRecover = "recover"
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NodeParallel = "parallel"
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NodeRun = "run"
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)
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// NodeType identifies the type of a parse tree node.
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type NodeType string
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// Type returns itself and provides an easy default implementation
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// for embedding in a Node. Embedded in all non-trivial Nodes.
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func (t NodeType) Type() NodeType {
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return t
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}
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// String returns the string value of the Node type.
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func (t NodeType) String() string {
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return string(t)
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}
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// A Node is an element in the parse tree.
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type Node interface {
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Type() NodeType
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Validate() error
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}
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