ceph/src/arrow/cpp/src/gandiva/func_descriptor.h

   1 // Licensed to the Apache Software Foundation (ASF) under one
   2 // or more contributor license agreements.  See the NOTICE file
   3 // distributed with this work for additional information
   4 // regarding copyright ownership.  The ASF licenses this file
   5 // to you under the Apache License, Version 2.0 (the
   6 // "License"); you may not use this file except in compliance
   7 // with the License.  You may obtain a copy of the License at
   8 //
   9 //   http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing,
  12 // software distributed under the License is distributed on an
  13 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14 // KIND, either express or implied.  See the License for the
  15 // specific language governing permissions and limitations
  16 // under the License.
  17
  18 #pragma once
  19
  20 #include <string>
  21 #include <vector>
  22
  23 #include "gandiva/arrow.h"
  24 #include "gandiva/visibility.h"
  25
  26 namespace gandiva {
  27
  28 /// Descriptor for a function in the expression.
  29 class GANDIVA_EXPORT FuncDescriptor {
  30  public:
  31   FuncDescriptor(const std::string& name, const DataTypeVector& params,
  32                  DataTypePtr return_type)
  33       : name_(name), params_(params), return_type_(return_type) {}
  34
  35   /// base function name.
  36   const std::string& name() const { return name_; }
  37
  38   /// Data types of the input params.
  39   const DataTypeVector& params() const { return params_; }
  40
  41   /// Data type of the return parameter.
  42   DataTypePtr return_type() const { return return_type_; }
  43
  44  private:
  45   std::string name_;
  46   DataTypeVector params_;
  47   DataTypePtr return_type_;
  48 };
  49
  50 }  // namespace gandiva