github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/plan/function/operator/op_bit.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package operator
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/container/nulls"
    19  	"github.com/matrixorigin/matrixone/pkg/container/vector"
    20  	"github.com/matrixorigin/matrixone/pkg/vm/process"
    21  	"golang.org/x/exp/constraints"
    22  )
    23  
    24  type opBitT interface {
    25  	constraints.Integer
    26  }
    27  
    28  type opBitFun[T opBitT] func(v1, v2 T) T
    29  
    30  func opBitXor[T opBitT](v1, v2 T) T {
    31  	return v1 ^ v2
    32  }
    33  
    34  func opBitOr[T opBitT](v1, v2 T) T {
    35  	return v1 | v2
    36  }
    37  
    38  func opBitAnd[T opBitT](v1, v2 T) T {
    39  	return v1 & v2
    40  }
    41  
    42  func opBitRightShift[T opBitT](v1, v2 T) T {
    43  	if v2 < 0 {
    44  		return 0
    45  	}
    46  	return v1 >> v2
    47  }
    48  
    49  func opBitLeftShift[T opBitT](v1, v2 T) T {
    50  	if v2 < 0 {
    51  		return 0
    52  	}
    53  	return v1 << v2
    54  }
    55  
    56  func OpBitAndFun[T opBitT](args []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    57  	return Arith[T, T](args, proc, args[0].GetType(), func(xs, ys, rs *vector.Vector) error {
    58  		return goOpBitGeneral(xs, ys, rs, opBitAnd[T])
    59  	})
    60  }
    61  
    62  func OpBitOrFun[T opBitT](args []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    63  	return Arith[T, T](args, proc, args[0].GetType(), func(xs, ys, rs *vector.Vector) error {
    64  		return goOpBitGeneral(xs, ys, rs, opBitOr[T])
    65  	})
    66  }
    67  
    68  func OpBitXorFun[T opBitT](args []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    69  	return Arith[T, T](args, proc, args[0].GetType(), func(xs, ys, rs *vector.Vector) error {
    70  		return goOpBitGeneral(xs, ys, rs, opBitXor[T])
    71  	})
    72  }
    73  
    74  func OpBitRightShiftFun[T opBitT](args []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    75  	return Arith[T, T](args, proc, args[0].GetType(), func(xs, ys, rs *vector.Vector) error {
    76  		return goOpBitGeneral(xs, ys, rs, opBitRightShift[T])
    77  	})
    78  }
    79  
    80  func OpBitLeftShiftFun[T opBitT](args []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    81  	return Arith[T, T](args, proc, args[0].GetType(), func(xs, ys, rs *vector.Vector) error {
    82  		return goOpBitGeneral(xs, ys, rs, opBitLeftShift[T])
    83  	})
    84  }
    85  
    86  func goOpBitGeneral[T opBitT](xs, ys, rs *vector.Vector, bfn opBitFun[T]) error {
    87  	xt, yt, rt := vector.MustTCols[T](xs), vector.MustTCols[T](ys), vector.MustTCols[T](rs)
    88  	if xs.IsScalar() {
    89  		if nulls.Any(ys.Nsp) {
    90  			for i, y := range yt {
    91  				if !nulls.Contains(rs.Nsp, uint64(i)) {
    92  					rt[i] = bfn(xt[0], y)
    93  				}
    94  			}
    95  		} else {
    96  			for i, y := range yt {
    97  				rt[i] = bfn(xt[0], y)
    98  			}
    99  		}
   100  		return nil
   101  	} else if ys.IsScalar() {
   102  		if nulls.Any(xs.Nsp) {
   103  			for i, x := range xt {
   104  				if !nulls.Contains(rs.Nsp, uint64(i)) {
   105  					rt[i] = bfn(x, yt[0])
   106  				}
   107  			}
   108  		} else {
   109  			for i, x := range xt {
   110  				rt[i] = bfn(x, yt[0])
   111  			}
   112  		}
   113  		return nil
   114  	} else {
   115  		if nulls.Any(rs.Nsp) {
   116  			for i, x := range xt {
   117  				if !nulls.Contains(rs.Nsp, uint64(i)) {
   118  					rt[i] = bfn(x, yt[i])
   119  				}
   120  			}
   121  		} else {
   122  			for i, x := range xt {
   123  				rt[i] = bfn(x, yt[i])
   124  			}
   125  		}
   126  		return nil
   127  	}
   128  }