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package org
import (
"math"
"regexp"
"strings"
)
type Paragraph struct{ Children []Node }
type HorizontalRule struct{}
var horizontalRuleRegexp = regexp.MustCompile(`^(\s*)-{5,}\s*$`)
var plainTextRegexp = regexp.MustCompile(`^(\s*)(.*)`)
func lexText(line string) (token, bool) {
if m := plainTextRegexp.FindStringSubmatch(line); m != nil {
return token{"text", len(m[1]), m[2], m}, true
}
return nilToken, false
}
func lexHorizontalRule(line string) (token, bool) {
if m := horizontalRuleRegexp.FindStringSubmatch(line); m != nil {
return token{"horizontalRule", len(m[1]), "", m}, true
}
return nilToken, false
}
func (d *Document) parseParagraph(i int, parentStop stopFn) (int, Node) {
lines, start := []string{d.tokens[i].content}, i
stop := func(d *Document, i int) bool {
return parentStop(d, i) || d.tokens[i].kind != "text" || d.tokens[i].content == ""
}
for i += 1; !stop(d, i); i++ {
lvl := math.Max(float64(d.tokens[i].lvl-d.baseLvl), 0)
lines = append(lines, strings.Repeat(" ", int(lvl))+d.tokens[i].content)
}
consumed := i - start
return consumed, Paragraph{d.parseInline(strings.Join(lines, "\n"))}
}
func (d *Document) parseHorizontalRule(i int, parentStop stopFn) (int, Node) {
return 1, HorizontalRule{}
}
func (n Paragraph) String() string { return String(n) }
func (n HorizontalRule) String() string { return String(n) }
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