YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

//--------------------------------------------------------------------------------------------------

// Copyright (c) YugaByte, Inc.

//

// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

// in compliance with the License.  You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software distributed under the License

// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

// or implied.  See the License for the specific language governing permissions and limitations

// under the License.

//

//--------------------------------------------------------------------------------------------------

#include "yb/yql/cql/ql/parser/parser.h"

namespace yb {

namespace ql {

using std::endl;

using std::shared_ptr;

using std::string;

using std::to_string;

//--------------------------------------------------------------------------------------------------

// Class Parser.

//--------------------------------------------------------------------------------------------------

Parser::Parser()

    : lex_processor_(),

      gram_processor_(this) {

}

Parser::~Parser() {

}

//--------------------------------------------------------------------------------------------------

Status Parser::Parse(const string& stmt, const bool reparsed, const MemTrackerPtr& mem_tracker,

                     const bool internal) {

  parse_context_ = ParseContext::UniPtr(new ParseContext(stmt, reparsed, mem_tracker, internal));

  lex_processor_.ScanInit(parse_context());

  gram_processor_.set_debug_level(parse_context_->trace_parsing());

  if (gram_processor_.parse() == 0 &&

      parse_context_->error_code() == ErrorCode::SUCCESS) {

    VLOG(3) << "Successfully parsed statement \"" << parse_context_->stmt()

            << "\". Result = <" << parse_context_->parse_tree() << ">" << endl;

  } else {

    VLOG(3) << kErrorFontStart << "Failed to parse \"" << parse_context_->stmt() << "\""

            << kErrorFontEnd << endl;

  }

  return parse_context_->GetStatus();

}

//--------------------------------------------------------------------------------------------------

ParseTree::UniPtr Parser::Done() {

  // When releasing the parse tree, we must free the context because it has references to the tree

  // which doesn't belong to this context any longer.

  ParseTree::UniPtr ptree = parse_context_->AcquireParseTree();

  parse_context_ = nullptr;

  return ptree;

}

//--------------------------------------------------------------------------------------------------

GramProcessor::symbol_type Parser::Scan() {

  return lex_processor_.Scan();

}

}  // namespace ql

}  // namespace yb