package merlin-lib

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Merlin's libraries

Install

Dune Dependency

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Authors

T

The Merlin team

Maintainers

D

defree@gmail.com

Sources

merlin-5.3-502.tbz

sha256=2cea46f12397fa6e31ef0c0d4f5e11c1cfd916ee49420694005c95ebb3aa24bc

sha512=e94abb9ae38149245337db033e2c3891c7ec772168e99abf1bda0216a894c0854e7170b56fe88eba83ec98f2ebc0f5c7c723e8db14f59eeb6dd348bec12c6d62

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

Module `Ocaml_utils.Diffing_with_keys`Source

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 = {

pos : int;
data : 'a;

}

Sourceval with_pos : 'a list -> 'a with_pos list

Sourcetype ('l, 'r, 'diff) mismatch =

| Name of {
1. pos : int;
2. got : string;
3. expected : string;
4. types_match : bool;
}
| Type of {
1. pos : int;
2. got : 'l;
3. expected : 'r;
4. reason : 'diff;
}

Sourcetype ('l, 'r, 'diff) change =

| Change of ('l, 'r, 'diff) mismatch
| Swap of {
1. pos : int * int;
2. first : string;
3. last : string;
}
| Move of {
1. name : string;
2. got : int;
3. expected : int;
}
| Insert of {
1. pos : int;
2. insert : 'r;
}
| Delete of {
1. pos : int;
2. delete : 'l;
}

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

Sourceval prefix : Format.formatter -> ('l, 'r, 'diff) change -> unit

Sourcemodule Define (D : Diffing.Defs with type eq := unit) : sig ... end