108 lines
2.4 KiB
Go
108 lines
2.4 KiB
Go
// Package visitor contains walker.visitor implementations
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package visitor
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import (
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"fmt"
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"io"
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"reflect"
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"sort"
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"github.com/z7zmey/php-parser/meta"
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"github.com/z7zmey/php-parser/node"
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"github.com/z7zmey/php-parser/walker"
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)
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type JsonDumper struct {
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Writer io.Writer
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NsResolver *NamespaceResolver
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}
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// EnterNode is invoked at every node in hierarchy
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func (d *JsonDumper) EnterNode(w walker.Walkable) bool {
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n := w.(node.Node)
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nodeType := reflect.TypeOf(n).String()
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fmt.Fprintf(d.Writer, "{%q:%q", "type", nodeType)
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if p := n.GetPosition(); p != nil {
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p := n.GetPosition()
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fmt.Fprintf(d.Writer, ",%q:{%q:%d,%q:%d,%q:%d,%q:%d}",
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"position",
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"startPos", p.StartPos,
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"endPos", p.EndPos,
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"startLine", p.StartLine,
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"endLine", p.EndLine)
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}
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if d.NsResolver != nil {
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if namespacedName, ok := d.NsResolver.ResolvedNames[n]; ok {
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fmt.Fprintf(d.Writer, ",%q:%q", "namespacedName", namespacedName)
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}
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}
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if mm := n.GetMeta(); len(mm) > 0 {
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fmt.Fprintf(d.Writer, ",%q:[", "meta")
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for k, m := range mm {
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if k != 0 {
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fmt.Fprint(d.Writer, ",")
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}
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switch m.(type) {
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case *meta.Comment:
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fmt.Fprintf(d.Writer, "{%q:%q,%q:%q,%q:%q}", "type", "*meta.Comment", "value", m.String(), "tokenName", meta.TokenNames[m.GetTokenName()])
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case *meta.WhiteSpace:
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fmt.Fprintf(d.Writer, "{%q:%q,%q:%q,%q:%q}", "type", "*meta.WhiteSpace", "value", m.String(), "tokenName", meta.TokenNames[m.GetTokenName()])
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}
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}
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fmt.Fprint(d.Writer, "]")
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}
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if a := n.Attributes(); len(a) > 0 {
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var attributes []string
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for key := range n.Attributes() {
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attributes = append(attributes, key)
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}
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sort.Strings(attributes)
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for _, attributeName := range attributes {
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attr := a[attributeName]
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switch attr.(type) {
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case string:
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fmt.Fprintf(d.Writer, ",\"%s\":%q", attributeName, attr)
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default:
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fmt.Fprintf(d.Writer, ",\"%s\":%v", attributeName, attr)
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}
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}
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}
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return true
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}
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// LeaveNode is invoked after node process
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func (d *JsonDumper) LeaveNode(n walker.Walkable) {
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fmt.Fprint(d.Writer, "}")
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}
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func (d *JsonDumper) EnterChildNode(key string, w walker.Walkable) {
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fmt.Fprintf(d.Writer, ",%q:", key)
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}
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func (d *JsonDumper) LeaveChildNode(key string, w walker.Walkable) {
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// do nothing
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}
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func (d *JsonDumper) EnterChildList(key string, w walker.Walkable) {
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fmt.Fprintf(d.Writer, ",%q:[", key)
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}
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func (d *JsonDumper) LeaveChildList(key string, w walker.Walkable) {
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fmt.Fprint(d.Writer, "]")
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}
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