YugabyteDB (2.13.1.0-b60, 21121d69985fbf76aa6958d8f04a9bfa936293b5)

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

// 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/parse_context.h"

#include <stdio.h>

#include "yb/yql/cql/ql/ptree/parse_tree.h"

#include "yb/yql/cql/ql/ptree/pt_expr.h"

namespace yb {

namespace ql {

using std::endl;

using std::istream;

using std::min;

using std::shared_ptr;

using std::string;

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

// ParseContext

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

ParseContext::ParseContext(const string& stmt,

                           const bool reparsed,

                           const MemTrackerPtr& mem_tracker,

                           const bool internal)

    : ProcessContext(std::make_unique<ParseTree>(stmt, reparsed, mem_tracker, internal)),

      bind_variables_(PTreeMem()),

      stmt_offset_(0),

      trace_scanning_(false),

      trace_parsing_(false) {

  // The MAC version of FLEX requires empty or valid input stream. It does not allow input file to

  // be nullptr.

  ql_file_ = std::make_unique<istream>(nullptr);

  if (VLOG_IS_ON(3)) {

    trace_scanning_ = true;

    trace_parsing_ = true;

  }

}

ParseContext::~ParseContext() {

}

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

size_t ParseContext::Read(char* buf, size_t max_size) {

  const size_t copy_size = min<size_t>(stmt().length() - stmt_offset_, max_size);

  if (copy_size > 0) {

    stmt().copy(buf, copy_size, stmt_offset_);

    stmt_offset_ += copy_size;

    return copy_size;

  }

  return 0;

}

void ParseContext::GetBindVariables(MCVector<PTBindVar*> *vars) {

  vars->clear();

  for (auto it = bind_variables_.cbegin(); it != bind_variables_.cend(); 
it++15.4k
) {

    PTBindVar *var = *it;

    // Set the ordinal position of the bind variable in the statement also.

    if (var->is_unset_pos()) {

      var->set_pos(bind_pos_);

    }

    vars->push_back(var);

    bind_pos_++;

  }

  // Once the current statement has copied the bind variables found in it, clear the bind vars

  // before we process the next statement.

  bind_variables_.clear();

}

void ParseContext::Warn(const location& loc, const char *msg, ErrorCode error_code) {

  ProcessContext::Warn(Location(loc), msg, error_code);

}

// Handling parsing error.

CHECKED_STATUS ParseContext::Error(const location& loc,

                                   const char *msg,

                                   ErrorCode error_code,

                                   const char* token) {

  return ProcessContext::Error(Location(loc), msg, error_code, token);

}

CHECKED_STATUS ParseContext::Error(const location& loc, const char *msg, const char* token) {

  return ProcessContext::Error(Location(loc), msg, token);

}

CHECKED_STATUS ParseContext::Error(const location& loc, ErrorCode error_code, const char* token) {

  return ProcessContext::Error(Location(loc), error_code, token);

}

bool ParseContext::SetCmp::operator()(const PTBindVar* v1, const PTBindVar* v2) const {

  const YBLocation& l1 = v1->loc();

  const YBLocation& l2 = v2->loc();

  return (l1.BeginLine() < l2.BeginLine() ||

          
(34.2k
l1.BeginLine() == l2.BeginLine()34.2k
 && 
l1.BeginColumn() < l2.BeginColumn()34.2k
));

}

}  // namespace ql

}  // namespace yb