faea88d48e
The existing approach made it hard to extend existing writers. With this change, replacing individual methods of a writer is possible by embedding it. Sharing the WriteNodes function also removes some unnecesseray duplication, so win win.
91 lines
2.2 KiB
Go
91 lines
2.2 KiB
Go
package org
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import "fmt"
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// Writer is the interface that is used to export a parsed document into a new format. See Document.Write().
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type Writer interface {
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Before(*Document) // Before is called before any nodes are passed to the writer.
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After(*Document) // After is called after all nodes have been passed to the writer.
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String() string // String is called at the very end to retrieve the final output.
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WriteKeyword(Keyword)
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WriteInclude(Include)
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WriteComment(Comment)
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WriteNodeWithMeta(NodeWithMeta)
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WriteHeadline(Headline)
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WriteBlock(Block)
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WriteExample(Example)
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WriteDrawer(Drawer)
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WritePropertyDrawer(PropertyDrawer)
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WriteList(List)
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WriteListItem(ListItem)
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WriteDescriptiveListItem(DescriptiveListItem)
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WriteTable(Table)
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WriteHorizontalRule(HorizontalRule)
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WriteParagraph(Paragraph)
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WriteText(Text)
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WriteEmphasis(Emphasis)
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WriteStatisticToken(StatisticToken)
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WriteExplicitLineBreak(ExplicitLineBreak)
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WriteLineBreak(LineBreak)
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WriteRegularLink(RegularLink)
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WriteFootnoteLink(FootnoteLink)
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WriteFootnoteDefinition(FootnoteDefinition)
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}
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func WriteNodes(w Writer, nodes ...Node) {
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for _, n := range nodes {
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switch n := n.(type) {
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case Keyword:
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w.WriteKeyword(n)
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case Include:
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w.WriteInclude(n)
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case Comment:
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w.WriteComment(n)
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case NodeWithMeta:
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w.WriteNodeWithMeta(n)
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case Headline:
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w.WriteHeadline(n)
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case Block:
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w.WriteBlock(n)
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case Example:
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w.WriteExample(n)
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case Drawer:
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w.WriteDrawer(n)
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case PropertyDrawer:
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w.WritePropertyDrawer(n)
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case List:
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w.WriteList(n)
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case ListItem:
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w.WriteListItem(n)
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case DescriptiveListItem:
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w.WriteDescriptiveListItem(n)
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case Table:
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w.WriteTable(n)
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case HorizontalRule:
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w.WriteHorizontalRule(n)
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case Paragraph:
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w.WriteParagraph(n)
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case Text:
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w.WriteText(n)
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case Emphasis:
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w.WriteEmphasis(n)
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case StatisticToken:
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w.WriteStatisticToken(n)
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case ExplicitLineBreak:
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w.WriteExplicitLineBreak(n)
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case LineBreak:
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w.WriteLineBreak(n)
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case RegularLink:
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w.WriteRegularLink(n)
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case FootnoteLink:
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w.WriteFootnoteLink(n)
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case FootnoteDefinition:
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w.WriteFootnoteDefinition(n)
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default:
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if n != nil {
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panic(fmt.Sprintf("bad node %#v", n))
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}
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}
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}
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}
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