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started building LCS into the diff loop...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2018-07-11 16:24:38 +03:00
parent 28a1a43f1e
commit 93fe4412dd
1 changed files with 27 additions and 2 deletions
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diff.js
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@ -235,7 +235,6 @@ function(A, B, options){
// ...would need to also include .value (i.e. .valueOf()) and // ...would need to also include .value (i.e. .valueOf()) and
// treat the thing as object... // treat the thing as object...
if(A === B || A == B){ if(A === B || A == B){
//if(A === B || (options.mode == 'JSON' && A == B)){
return null return null
} }
@ -261,9 +260,35 @@ function(A, B, options){
function(a, b){ function(a, b){
// XXX cache _diff(..) results... // XXX cache _diff(..) results...
return a === b || a == b || _diff(a, b) }) return a === b || a == b || _diff(a, b) })
// XXX diff only the sections that differ... // collect gaps between common sections...
common_sections.shift()
var a = 0
var b = 0
var gaps = []
common_sections
// make this consider the tail gap...
.concat({
A: A.length,
B: B.length,
length: 0,
})
.forEach(function(e){
// store the gap...
a != e.A && b != e.B
&& gaps.push([
[a, A.slice(a, e.A)],
[b: B.slice(b, e.B)],
])
// go to next gap...
a = e.A + e.length
b = e.B + e.length
})
// XXX diff the gaps...
// XXX // XXX
// indexed items... // indexed items...
_diff_items(res, A, B, options, _diff_items(res, A, B, options,
function(e){ return e == 0 || !!(e*1) }) function(e){ return e == 0 || !!(e*1) })