github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/types/bool.go (about)

     1  // Copyright 2019 Dolthub, Inc.
     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  // This file incorporates work covered by the following copyright and
    16  // permission notice:
    17  //
    18  // Copyright 2016 Attic Labs, Inc. All rights reserved.
    19  // Licensed under the Apache License, version 2.0:
    20  // http://www.apache.org/licenses/LICENSE-2.0
    21  
    22  package types
    23  
    24  import (
    25  	"context"
    26  	"strconv"
    27  
    28  	"github.com/dolthub/dolt/go/store/hash"
    29  )
    30  
    31  // Bool is a Noms Value wrapper around the primitive bool type.
    32  type Bool bool
    33  
    34  // Value interface
    35  func (b Bool) Value(ctx context.Context) (Value, error) {
    36  	return b, nil
    37  }
    38  
    39  func (b Bool) Equals(other Value) bool {
    40  	return b == other
    41  }
    42  
    43  func (b Bool) Less(nbf *NomsBinFormat, other LesserValuable) (bool, error) {
    44  	if b2, ok := other.(Bool); ok {
    45  		return !bool(b) && bool(b2), nil
    46  	}
    47  	return true, nil
    48  }
    49  
    50  func (b Bool) Hash(nbf *NomsBinFormat) (hash.Hash, error) {
    51  	return getHash(b, nbf)
    52  }
    53  
    54  func (b Bool) isPrimitive() bool {
    55  	return true
    56  }
    57  
    58  func (b Bool) WalkValues(ctx context.Context, cb ValueCallback) error {
    59  	return nil
    60  }
    61  
    62  func (b Bool) WalkRefs(nbf *NomsBinFormat, cb RefCallback) error {
    63  	return nil
    64  }
    65  
    66  func (b Bool) typeOf() (*Type, error) {
    67  	return PrimitiveTypeMap[BoolKind], nil
    68  }
    69  
    70  func (b Bool) Kind() NomsKind {
    71  	return BoolKind
    72  }
    73  
    74  func (b Bool) valueReadWriter() ValueReadWriter {
    75  	return nil
    76  }
    77  
    78  func (b Bool) writeTo(w nomsWriter, nbf *NomsBinFormat) error {
    79  	err := BoolKind.writeTo(w, nbf)
    80  
    81  	if err != nil {
    82  		return err
    83  	}
    84  
    85  	w.writeBool(bool(b))
    86  
    87  	return nil
    88  }
    89  
    90  func (b Bool) readFrom(nbf *NomsBinFormat, bnr *binaryNomsReader) (Value, error) {
    91  	return Bool(bnr.ReadBool()), nil
    92  }
    93  
    94  func (b Bool) skip(nbf *NomsBinFormat, bnr *binaryNomsReader) {
    95  	bnr.skipUint8()
    96  }
    97  
    98  func (b Bool) HumanReadableString() string {
    99  	return strconv.FormatBool(bool(b))
   100  }