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package parser
import (
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/text"
"github.com/yuin/goldmark/util"
)
type blockquoteParser struct {
}
var defaultBlockquoteParser = &blockquoteParser{}
// NewBlockquoteParser returns a new BlockParser that
// parses blockquotes.
func NewBlockquoteParser() BlockParser {
return defaultBlockquoteParser
}
func (b *blockquoteParser) process(reader text.Reader) bool {
line, _ := reader.PeekLine()
w, pos := util.IndentWidth(line, reader.LineOffset())
if w > 3 || pos >= len(line) || line[pos] != '>' {
return false
}
pos++
if pos >= len(line) || line[pos] == '\n' {
reader.Advance(pos)
return true
}
if line[pos] == ' ' || line[pos] == '\t' {
pos++
}
reader.Advance(pos)
if line[pos-1] == '\t' {
reader.SetPadding(2)
}
return true
}
func (b *blockquoteParser) Trigger() []byte {
return []byte{'>'}
}
func (b *blockquoteParser) Open(parent ast.Node, reader text.Reader, pc Context) (ast.Node, State) {
if b.process(reader) {
return ast.NewBlockquote(), HasChildren
}
return nil, NoChildren
}
func (b *blockquoteParser) Continue(node ast.Node, reader text.Reader, pc Context) State {
if b.process(reader) {
return Continue | HasChildren
}
return Close
}
func (b *blockquoteParser) Close(node ast.Node, reader text.Reader, pc Context) {
// nothing to do
}
func (b *blockquoteParser) CanInterruptParagraph() bool {
return true
}
func (b *blockquoteParser) CanAcceptIndentedLine() bool {
return false
}
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