arrays.diff #

fn diff[T](a []T, b []T) &DiffContext[T]

diff returns the difference of two arrays.

fn (mut c DiffContext[T]) generate_patch(param DiffGenStrParam) string

generate_patch generate a diff string of two arrays.

struct DiffChange {
pub mut:
	a   int // position in input a []T
	b   int // position in input b []T
	del int // delete Del elements from input a
	ins int // insert Ins elements from input b
}

DiffChange contains one or more deletions or inserts at one position in two arrays.

struct DiffContext[T] {
mut:
	a     []T
	b     []T
	flags []DiffContextFlag
	max   int
	// forward and reverse d-path endpoint x components
	forward []int
	reverse []int
pub mut:
	changes []DiffChange
}

struct DiffGenStrParam {
pub mut:
	colorful     bool
	unified      int = 3 // how many context lines before/after diff block
	block_header bool // output `@@ -3,4 +3,5 @@` or not
}