71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package node
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import (
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"bytes"
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"fmt"
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"github.com/z7zmey/php-parser/token"
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"io"
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)
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type Node interface {
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Print(out io.Writer, indent string)
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Append(nn ...Node) Node
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Attribute(key string, value string) Node
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}
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type simpleNode struct {
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name string
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children []Node
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attributes map[string]string
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}
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type tokenNode struct {
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*simpleNode
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token token.Token
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}
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func (n simpleNode) String() string {
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buf := new(bytes.Buffer)
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n.Print(buf, " ")
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return buf.String()
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}
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func (n simpleNode) Print(out io.Writer, indent string) {
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if len(n.attributes) > 0 {
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fmt.Fprintf(out, "\n%v%v %s", indent, n.name, n.attributes)
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} else {
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fmt.Fprintf(out, "\n%v%v", indent, n.name)
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}
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for _, nn := range n.children {
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nn.Print(out, indent+" ")
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}
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}
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func SimpleNode(name string) Node {
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return simpleNode{name: name, attributes: make(map[string]string)}
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}
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func TokenNode(name string, t token.Token) Node {
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return tokenNode{
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&simpleNode{name: name, attributes: make(map[string]string)},
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t,
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}
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}
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func (n tokenNode) Print(out io.Writer, indent string) {
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fmt.Fprintf(out, "\n%v%v [%d %d] %q", indent, n.name, n.token.StartLine, n.token.EndLine, n.token.Value)
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for _, nn := range n.children {
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nn.Print(out, indent+" ")
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}
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}
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func (n simpleNode) Append(nn ...Node) Node {
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n.children = append(n.children, nn...)
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return n
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}
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func (n simpleNode) Attribute(key string, value string) Node {
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n.attributes[key] = value
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return n
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}
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