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Add helpers for accessing objects by paths. (#140)
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| // Copyright 2021 FerretDB 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. | ||
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| package types | ||
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| import "fmt" | ||
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| // Array represents BSON array. | ||
| type Array []any | ||
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| // Get returns a value at the given index. | ||
| func (a Array) Get(index int) (any, error) { | ||
| if l := len(a); index < 0 || index >= l { | ||
| return nil, fmt.Errorf("types.Array.Get: index %d is out of bounds [0-%d)", index, l) | ||
| } | ||
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| return a[index], nil | ||
| } | ||
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| // GetByPath returns a value by path - a sequence of indexes and keys. | ||
| func (a Array) GetByPath(path ...string) (any, error) { | ||
| return getByPath(a, path...) | ||
| } | ||
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| // Set sets the value at the given index. | ||
| func (a Array) Set(index int, value any) error { | ||
| if l := len(a); index < 0 || index >= l { | ||
| return fmt.Errorf("types.Array.Set: index %d is out of bounds [0-%d)", index, l) | ||
| } | ||
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| if err := validateValue(value); err != nil { | ||
| return fmt.Errorf("types.Array.Set: %w", err) | ||
| } | ||
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| a[index] = value | ||
| return nil | ||
| } |
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