Add markdown grammar

Author: FeiyouG

markdown/binding.go

@@ -0,0 +1,15 @@
+package markdown
+
+//#include "parser.h"
+//TSLanguage *tree_sitter_markdown();
+import "C"
+import (
+	"unsafe"
+
+	sitter "github.com/smacker/go-tree-sitter"
+)
+
+func GetLanguage() *sitter.Language {
+	ptr := unsafe.Pointer(C.tree_sitter_markdown())
+	return sitter.NewLanguage(ptr)
+}

markdown/binding_test.go

@@ -0,0 +1,21 @@
+package markdown_test
+
+import (
+	"context"
+	"testing"
+
+	sitter "github.com/smacker/go-tree-sitter"
+	"github.com/smacker/go-tree-sitter/markdown"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGrammar(t *testing.T) {
+	assert := assert.New(t)
+
+	n, err := sitter.ParseCtx(context.Background(), []byte("# This is a header"), markdown.GetLanguage())
+	assert.NoError(err)
+	assert.Equal(
+		"(document (atx_heading (atx_h1_marker) (heading_content (text))))",
+		n.String(),
+	)
+}