package merlin-lib

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Merlin's libraries

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dune-project
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  1. T
    The Merlin team

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  1. D
    defree@gmail.com

Sources

merlin-5.9.tbz
sha256=de395dd37d246e3ec303e1af35ff8421665fa4f0f0005d95732124b22e3417ac
sha512=74756b28767cdfe10288720540582e818a9d946dd2406606724ebc7b68d1cf6623142e56a1e457f7862839732e7add365aec056930c7ac89be7036c22e5f29ae

doc/merlin-lib.ocaml_utils/Ocaml_utils/Diffing_with_keys/index.html

Module Ocaml_utils.Diffing_with_keysSource

When diffing lists where each element has a distinct key, we can refine the diffing patch by introducing two composite edit moves: swaps and moves.

Swaps exchange the position of two elements. Swap cost is set to 2 * change - epsilon. Moves change the position of one element. Move cost is set to delete + addition - epsilon.

When the cost delete + addition is greater than change and with those specific weights, the optimal patch with Swaps and Moves can be computed directly and cheaply from the original optimal patch.

Sourcetype 'a with_pos = {
  1. pos : int;
  2. data : 'a;
}
Sourceval with_pos : 'a list -> 'a with_pos list
Sourcetype ('l, 'r, 'diff) mismatch =
  1. | Name of {
    1. pos : int;
    2. got : string;
    3. expected : string;
    4. types_match : bool;
    }
  2. | Type of {
    1. pos : int;
    2. got : 'l;
    3. expected : 'r;
    4. reason : 'diff;
    }
Sourcetype ('l, 'r, 'diff) change =
  1. | Change of ('l, 'r, 'diff) mismatch
  2. | Swap of {
    1. pos : int * int;
    2. first : string;
    3. last : string;
    }
  3. | Move of {
    1. name : string;
    2. got : int;
    3. expected : int;
    }
  4. | Insert of {
    1. pos : int;
    2. insert : 'r;
    }
  5. | Delete of {
    1. pos : int;
    2. delete : 'l;
    }

This specialized version of changes introduces two composite changes: Move and Swap

Sourceval prefix : ('l, 'r, 'diff) change Format_doc.printer
Sourcemodule Define (D : Diffing.Defs with type eq := unit) : sig ... end