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Philip Conrad
47a13c4f8c
This commit adds a new `EditTree` data structure, which is built for applying in-place modifications to a Term, and can render the final result of all the edits efficiently. The goal is to use this data structure to apply *all* of the patches in a JSON-Patch sequence rapidly, and then collapse all of the edits at the end with minimal wasted Term copying. The `EditTree` data structure supports the following core operations: - Insert - Delete - Unfold - Render It is designed to work across all core Rego data types, with special- case handling for scalars versus composite types. It also vendors in a bit-vector library to allow for ease-of- bookkeeping for in-place Array modifications. As an example of usage, `json.filter`'s builtin implementation has been replaced with an `EditTree`-based design, which scales well on deeply-nested paths, relative to the original implementation. Signed-off-by: Philip Conrad <philipaconrad@gmail.com>
20 lines
1.0 KiB
Plaintext
20 lines
1.0 KiB
Plaintext
Copyright 2012 Keith Rarick
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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