feat: implement code block parser (#1727)

plugin/gomark/parser/code_block_test.go

@@ -0,0 +1,62 @@
+package parser
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+)
+
+func TestCodeBlockParser(t *testing.T) {
+	tests := []struct {
+		text      string
+		codeBlock *CodeBlockParser
+	}{
+		{
+			text:      "```Hello world!```",
+			codeBlock: nil,
+		},
+		{
+			text: "```\nHello\n```",
+			codeBlock: &CodeBlockParser{
+				Language: "",
+				Content:  "Hello",
+			},
+		},
+		{
+			text: "```\nHello world!\n```",
+			codeBlock: &CodeBlockParser{
+				Language: "",
+				Content:  "Hello world!",
+			},
+		},
+		{
+			text: "```java\nHello \n world!\n```",
+			codeBlock: &CodeBlockParser{
+				Language: "java",
+				Content:  "Hello \n world!",
+			},
+		},
+		{
+			text:      "```java\nHello \n world!\n```111",
+			codeBlock: nil,
+		},
+		{
+			text:      "```java\nHello \n world!\n``` 111",
+			codeBlock: nil,
+		},
+		{
+			text: "```java\nHello \n world!\n```\n123123",
+			codeBlock: &CodeBlockParser{
+				Language: "java",
+				Content:  "Hello \n world!",
+			},
+		},
+	}
+
+	for _, test := range tests {
+		tokens := tokenizer.Tokenize(test.text)
+		codeBlock := NewCodeBlockParser()
+		require.Equal(t, test.codeBlock, codeBlock.Match(tokens))
+	}
+}