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Add operator/= and operator/ to construct a JSON pointer by appending two JSON pointers #1469

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merged 6 commits into from
Mar 11, 2019

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garethsb
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@garethsb garethsb commented Jan 31, 2019

Add operator/= and operator/ to construct a JSON pointer by appending two JSON pointers, as well as convenience op/= and op/ to append a single unescaped token or array index. Design inspired by std::filesystem::path, based on feedback on PR #1454.


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  • The test suite compiles and runs without error.
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pboettch and others added 2 commits January 24, 2019 16:46
… two JSON pointers, as well as convenience op/= and op= to append a single unescaped token or array index; inspired by std::filesystem::path
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coveralls commented Jan 31, 2019

Coverage Status

Coverage remained the same at 100.0% when pulling d183bd0 on garethsb-sony:json_pointer-append into 68ec3eb on nlohmann:develop.

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pboettch commented Feb 1, 2019

FWIW: LGTM

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garethsb commented Feb 1, 2019

Thanks, @pboettch. Hopefully @nlohmann approves too. :-)

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Very nice!

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garethsb commented Feb 13, 2019

Thanks. How would you feel about any or all of:

  • making is_root public, potentially with a rename to empty for consistency with std::filesystem::path (this would avoid users having to compare vs. default-constructed json_pointer to detect this)
  • adding parent_pointer for consistency with std::filesystem::path::parent_path (parent of empty pointer is empty)

The fact that we have pop_back that returns a value (and no back) bothers me a little, but that's probably not a change to make at this point. Likewise the inconsistency of the name of the private top member function (I believe only used by basic_json::patch); it ought to be front for consistency if it were ever made public. Ah, that's not true, since it returns a json_pointer, not a std::string. Perhaps top_pointer, front_pointer or head_pointer?

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@nlohmann I have now added parent_pointer and empty as described, and updated the unit tests. Do you think it would be possible to merge these few json_pointer changes sometime? Thanks.

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I think the reported Travis CI failures are not actually related to this PR, am I right?

@nlohmann nlohmann self-assigned this Mar 11, 2019
@nlohmann nlohmann added this to the Release 3.6.0 milestone Mar 11, 2019
@nlohmann nlohmann merged commit c983b67 into nlohmann:develop Mar 11, 2019
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Thanks a lot, and thanks in particular for your patience!

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4 participants