feat: implement paragraph and italic parsers (#1725)

plugin/gomark/parser/paragraph.go

@@ -0,0 +1,30 @@
+package parser
+
+import "github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+
+type ParagraphParser struct {
+	ContentTokens []*tokenizer.Token
+}
+
+func NewParagraphParser() *ParagraphParser {
+	return &ParagraphParser{}
+}
+
+func (*ParagraphParser) Match(tokens []*tokenizer.Token) *ParagraphParser {
+	contentTokens := []*tokenizer.Token{}
+	cursor := 0
+	for ; cursor < len(tokens); cursor++ {
+		token := tokens[cursor]
+		if token.Type == tokenizer.Newline {
+			break
+		}
+		contentTokens = append(contentTokens, token)
+	}
+	if len(contentTokens) == 0 {
+		return nil
+	}
+
+	return &ParagraphParser{
+		ContentTokens: contentTokens,
+	}
+}