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Can you elaborate ? Maybe with an example and some JSON ? (It saves time when we understanding exactly what everyone means.) |
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Certainly, I should have included that. Here is a very simple example, consider this JSON:
Is there are way to determine that the value of key/field For the one application I mentioned, I'm interested in finding the position with in a buffer (i.e. offset) where a key's value occurs. |
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For the keys, we do provide a pointer to the start of the key... With the On Demand API, when processing the keys, we often just return a raw pointer to the buffer, see... https://github.com/simdjson/simdjson/blob/master/include/simdjson/generic/ondemand/raw_json_string.h So you have a memory pointer right at the beginning of the key. The For the strings values in general, we escape them to a separate buffer where they get normalized to unescaped UTF-8, so we don't track the location of the string in the input. |
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While iterating through JSON, you can also call get_raw_token() on any value, which gives you a start offset and a "maximum length" (which includes the entire string / double in the case of scalars, as well as any trailing whitespace). Since it returns a pointer into the original buffer, you can easily get the offset from that. |
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+1 |
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Oh ... also of note, if you do it this way you can skip parsing of the actual values, too (or just get their type). |
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I assume you meant raw_json_token() ? I think I can make that work, I'll give it a try hopefully later today. Thanks for your response. |
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First off, I just stumbled upon simdjson this afternoon and it looks awesome!
I have a perhaps somewhat unique application where rather than parsing a JSON document and extracting field values, I instead need to extract field value offsets (start and end ideally). After looking through the examples and API documentation I don't see any mention of position or offsets. Is it possible to extract field value offset information with simdjson?
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