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-4.17.1-501.tbz

sha256=376707aa871f09e9639456d3fbe4b89a21c9ad75c774e94cbbbe67f842b0a500

sha512=a11ea4b8e3520b3ee41ae8198cda34b2816b8dfcdcb99350ef29689a7d62bb66d17ffa075c551aa56d521120b55e6db14a106a31f7b3970ed2aa07e1db3c9b88

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