ModuleDiff-2.0.1Haskell2010

Data.Algorithm.DiffOutput

Generates a string output that is similar to diff normal mode.

Synopsis

value diffToLineRanges
value ppDiff
value prettyDiffs
value parsePrettyDiffs
type LineNo
data LineRange
value mkLineRange
data DiffOperation

PackageDiff-2.0.1
Exports8
LanguageHaskell2010
LicenceBSD-3-Clause
SourceDiffOutput.hs

valuediffToLineRanges :: [Diff [String]] -> [DiffOperation LineRange]

Converts Diffs to DiffOperations. First and Second ocurrances are converted to Addition and Deletion, respectively, while consecutive ocurrances of them are replaced by a Change.

valueppDiff :: [Diff [String]] -> String

Source#

Pretty print the differences. The output is similar to the output of the diff utility.

> putStr (ppDiff (getGroupedDiff ["a","b","c","d","e"] ["a","c","d","f"]))
2d1
< b
5c4
< e
---
> f

valueprettyDiffs :: [DiffOperation LineRange] -> Doc

Source#

Pretty print of diff operations.

valueparsePrettyDiffs :: String -> [DiffOperation LineRange]

Source#

Parse pretty printed Diffs as DiffOperations.

typetype LineNo = Int

Source#

Line number alias. Always non-negative.

datadata LineRange

Source#

Line Range: start, end and contents.

The following invariants hold:

snd lrNumbers >= fst lrNumbers
snd lrNumbers - fst lrNumbers + 1 == length lrContents

which imply lrContents cannot be empty.

Constructors

LineRange
- lrNumbers :: (LineNo, LineNo)
- lrContents :: [String]

Instances4Eq, Ord, Read, Show

Eq LineRangeDefined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Ord LineRangeDefined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Read LineRangeDefined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Show LineRangeDefined in Diff-2.0.1 · Data.Algorithm.DiffOutput

valuemkLineRange :: Int -> [String] -> LineRange

Source#

Smart constructor for LineRange that computes the end line from the start line and the content length, guaranteeing that its content length and range match.

datadata DiffOperation a

Source#

Diff operation representing changes to apply.

Constructors

Deletion a LineNo
Element deleted on the left input, line number preceding the deleted lines in the right input.
Addition a LineNo
Element added from the right input, line number preceding the added lines in the left input.
Change a a
Element changed from the left input to the right input.

Instances4Eq, Ord, Read, Show

Eq a => Eq (DiffOperation a)Defined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Ord a => Ord (DiffOperation a)Defined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Read a => Read (DiffOperation a)Defined in Diff-2.0.1 · Data.Algorithm.DiffOutput
Show a => Show (DiffOperation a)Defined in Diff-2.0.1 · Data.Algorithm.DiffOutput