chore: implement gomark skeleton

plugin/gomark/parser/parser.go

@@ -1 +1,65 @@
 package parser
+
+import (
+	"github.com/usememos/memos/plugin/gomark/ast"
+	"github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+)
+
+type Context struct {
+	BlockParsers  []BlockParser
+	InlineParsers []InlineParser
+}
+
+type BaseParser interface {
+	Match(tokens []*tokenizer.Token) (int, bool)
+	Parse(tokens []*tokenizer.Token) ast.Node
+}
+
+type InlineParser interface {
+	BaseParser
+}
+
+type BlockParser interface {
+	BaseParser
+}
+
+func Parse(tokens []*tokenizer.Token) []ast.Node {
+	nodes := []ast.Node{}
+	blockParsers := []BlockParser{
+		NewParagraphParser(),
+	}
+	for len(tokens) > 0 {
+		for _, blockParser := range blockParsers {
+			cursor, matched := blockParser.Match(tokens)
+			if matched {
+				node := blockParser.Parse(tokens)
+				nodes = append(nodes, node)
+				tokens = tokens[cursor:]
+				break
+			}
+		}
+	}
+	return nodes
+}
+
+func ParseInline(tokens []*tokenizer.Token, inlineParsers []InlineParser) []ast.Node {
+	nodes := []ast.Node{}
+	var lastNode ast.Node
+	for len(tokens) > 0 {
+		for _, inlineParser := range inlineParsers {
+			cursor, matched := inlineParser.Match(tokens)
+			if matched {
+				node := inlineParser.Parse(tokens)
+				if node.Type() == ast.NodeTypeText && lastNode != nil && lastNode.Type() == ast.NodeTypeText {
+					lastNode.(*ast.Text).Content += node.(*ast.Text).Content
+				} else {
+					nodes = append(nodes, node)
+					lastNode = node
+				}
+				tokens = tokens[cursor:]
+				break
+			}
+		}
+	}
+	return nodes
+}