Introduced lexer & parser interfaces

commit_hash:fee365c90a176dd33a967cee20994b21d530080c

1 files changed, 35 insertions, 0 deletions

diff --git a/yql/essentials/sql/v1/proto_parser/antlr4/proto_parser.cpp b/yql/essentials/sql/v1/proto_parser/antlr4/proto_parser.cpp
new file mode 100644
index 00000000000..33ec032f6cf
--- /dev/null
+++ b/yql/essentials/sql/v1/proto_parser/antlr4/proto_parser.cpp
@@ -0,0 +1,35 @@
+#include "proto_parser.h"
+#include <yql/essentials/parser/proto_ast/antlr4/proto_ast_antlr4.h>
+#include <yql/essentials/parser/proto_ast/gen/v1_antlr4/SQLv1Antlr4Lexer.h>
+#include <yql/essentials/parser/proto_ast/gen/v1_antlr4/SQLv1Antlr4Parser.h>
+#include <yql/essentials/utils/yql_panic.h>
+
+namespace NSQLTranslationV1 {
+
+namespace {
+
+class TParser : public NSQLTranslation::IParser {
+public:
+    google::protobuf::Message* Parse(
+    const TString& query, const TString& queryName, NProtoAST::IErrorCollector& err,
+        google::protobuf::Arena* arena) final {
+        YQL_ENSURE(arena);
+        NProtoAST::TProtoASTBuilder4<NALPDefaultAntlr4::SQLv1Antlr4Parser, NALPDefaultAntlr4::SQLv1Antlr4Lexer> builder(query, queryName, arena);
+        return builder.BuildAST(err);
+    }
+};
+
+class TFactory: public NSQLTranslation::IParserFactory {
+public:
+    std::unique_ptr<NSQLTranslation::IParser> MakeParser() const final {
+        return std::make_unique<TParser>();
+    }
+};
+
+}
+
+NSQLTranslation::TParserFactoryPtr MakeAntlr4ParserFactory() {
+    return MakeIntrusive<TFactory>();
+}
+
+}