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Code Issues Projects Releases Wiki Activity

Reduce memory footprint

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This commit is contained in:
Junegunn Choi 2015-01-09 02:37:08 +09:00
parent d303c5b3eb
commit aa05bf5206
7 changed files with 62 additions and 48 deletions
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6
src/chunklist_test.go
View File

@ -7,7 +7,7 @@ import (
func TestChunkList(t *testing.T) {
cl := NewChunkList(func(s *string, i int) *Item {
return &Item{text: s, index: i * 2}
return &Item{text: s, rank: Rank{0, 0, uint32(i * 2)}}
})
// Snapshot
@ -36,8 +36,8 @@ func TestChunkList(t *testing.T) {
if len(*chunk1) != 2 {
t.Error("Snapshot should contain only two items")
}
if *(*chunk1)[0].text != "hello" || (*chunk1)[0].index != 0 ||
*(*chunk1)[1].text != "world" || (*chunk1)[1].index != 2 {
if *(*chunk1)[0].text != "hello" || (*chunk1)[0].rank.index != 0 ||
*(*chunk1)[1].text != "world" || (*chunk1)[1].rank.index != 2 {
t.Error("Invalid data")
}
if chunk1.IsFull() {

11
src/core.go
View File

@ -39,14 +39,15 @@ func Run(options *Options) {
var chunkList *ChunkList
if len(opts.WithNth) == 0 {
chunkList = NewChunkList(func(data *string, index int) *Item {
return &Item{text: data, index: index}
return &Item{text: data, rank: Rank{0, 0, uint32(index)}}
})
} else {
chunkList = NewChunkList(func(data *string, index int) *Item {
item := Item{text: data, index: index}
tokens := Tokenize(item.text, opts.Delimiter)
item.origText = item.text
item.text = Transform(tokens, opts.WithNth).whole
tokens := Tokenize(data, opts.Delimiter)
item := Item{
text: Transform(tokens, opts.WithNth).whole,
origText: data,
rank: Rank{0, 0, uint32(index)}}
return &item
})
}

35
src/item.go
View File

@ -5,31 +5,32 @@ import (
"sort"
)
type Offset [2]int
type Offset [2]int32
type Item struct {
text *string
origText *string
offsets []Offset
index int
rank Rank
transformed *Transformed
}
type Rank [3]int
var NilRank = Rank{-1, 0, 0}
type Rank struct {
matchlen uint16
strlen uint16
index uint32
}
func (i *Item) Rank() Rank {
if i.rank[0] > 0 {
if i.rank.matchlen > 0 || i.rank.strlen > 0 {
return i.rank
}
sort.Sort(ByOrder(i.offsets))
matchlen := 0
prevEnd := 0
for _, offset := range i.offsets {
begin := offset[0]
end := offset[1]
begin := int(offset[0])
end := int(offset[1])
if prevEnd > begin {
begin = prevEnd
}
@ -40,7 +41,7 @@ func (i *Item) Rank() Rank {
matchlen += end - begin
}
}
i.rank = Rank{matchlen, len(*i.text), i.index}
i.rank = Rank{uint16(matchlen), uint16(len(*i.text)), i.rank.index}
return i.rank
}
@ -86,14 +87,22 @@ func (a ByRelevance) Less(i, j int) bool {
}
func compareRanks(irank Rank, jrank Rank) bool {
for idx := range irank {
if irank[idx] < jrank[idx] {
if irank.matchlen < jrank.matchlen {
return true
} else if irank[idx] > jrank[idx] {
} else if irank.matchlen > jrank.matchlen {
return false
}
}
if irank.strlen < jrank.strlen {
return true
} else if irank.strlen > jrank.strlen {
return false
}
if irank.index <= jrank.index {
return true
}
return false
}
func SortMerge(partialResults [][]*Item) []*Item {

17
src/item_test.go
View File

@ -23,8 +23,7 @@ func TestRankComparison(t *testing.T) {
if compareRanks(Rank{3, 0, 5}, Rank{2, 0, 7}) ||
!compareRanks(Rank{3, 0, 5}, Rank{3, 0, 6}) ||
!compareRanks(Rank{1, 2, 3}, Rank{1, 3, 2}) ||
!compareRanks(NilRank, Rank{0, 0, 0}) ||
compareRanks(Rank{0, 0, 0}, NilRank) {
!compareRanks(Rank{0, 0, 0}, Rank{0, 0, 0}) {
t.Error("Invalid order")
}
}
@ -32,13 +31,13 @@ func TestRankComparison(t *testing.T) {
// Match length, string length, index
func TestItemRank(t *testing.T) {
strs := []string{"foo", "foobar", "bar", "baz"}
item1 := Item{text: &strs[0], index: 1, offsets: []Offset{}}
item1 := Item{text: &strs[0], rank: Rank{0, 0, 1}, offsets: []Offset{}}
rank1 := item1.Rank()
if rank1[0] != 0 || rank1[1] != 3 || rank1[2] != 1 {
if rank1.matchlen != 0 || rank1.strlen != 3 || rank1.index != 1 {
t.Error(item1.Rank())
}
// Only differ in index
item2 := Item{text: &strs[0], index: 0, offsets: []Offset{}}
item2 := Item{text: &strs[0], rank: Rank{0, 0, 0}, offsets: []Offset{}}
items := []*Item{&item1, &item2}
sort.Sort(ByRelevance(items))
@ -54,10 +53,10 @@ func TestItemRank(t *testing.T) {
}
// Sort by relevance
item3 := Item{text: &strs[1], index: 2, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
item4 := Item{text: &strs[1], index: 2, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
item5 := Item{text: &strs[2], index: 2, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
item6 := Item{text: &strs[2], index: 2, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
item3 := Item{text: &strs[1], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
item4 := Item{text: &strs[1], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
item5 := Item{text: &strs[2], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
item6 := Item{text: &strs[2], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
items = []*Item{&item1, &item2, &item3, &item4, &item5, &item6}
sort.Sort(ByRelevance(items))
if items[0] != &item2 || items[1] != &item1 ||

10
src/pattern.go
View File

@ -236,9 +236,8 @@ func (p *Pattern) fuzzyMatch(chunk *Chunk) []*Item {
if sidx, eidx := p.iter(FuzzyMatch, input, p.text); sidx >= 0 {
matches = append(matches, &Item{
text: item.text,
index: item.index,
offsets: []Offset{Offset{sidx, eidx}},
rank: NilRank})
offsets: []Offset{Offset{int32(sidx), int32(eidx)}},
rank: Rank{0, 0, item.rank.index}})
}
}
return matches
@ -256,7 +255,7 @@ func (p *Pattern) extendedMatch(chunk *Chunk) []*Item {
if term.inv {
break Loop
}
offsets = append(offsets, Offset{sidx, eidx})
offsets = append(offsets, Offset{int32(sidx), int32(eidx)})
} else if term.inv {
offsets = append(offsets, Offset{0, 0})
}
@ -264,9 +263,8 @@ func (p *Pattern) extendedMatch(chunk *Chunk) []*Item {
if len(offsets) == len(p.terms) {
matches = append(matches, &Item{
text: item.text,
index: item.index,
offsets: offsets,
rank: NilRank})
rank: Rank{0, 0, item.rank.index}})
}
}
return matches

18
src/terminal.go
View File

@ -232,9 +232,9 @@ func trimRight(runes []rune, width int) ([]rune, int) {
return runes, trimmed
}
func trimLeft(runes []rune, width int) ([]rune, int) {
func trimLeft(runes []rune, width int) ([]rune, int32) {
currentWidth := displayWidth(runes)
trimmed := 0
var trimmed int32 = 0
for currentWidth > width && len(runes) > 0 {
currentWidth -= runewidth.RuneWidth(runes[0])
@ -245,7 +245,7 @@ func trimLeft(runes []rune, width int) ([]rune, int) {
}
func (*Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int) {
maxe := 0
var maxe int32 = 0
for _, offset := range item.offsets {
if offset[1] > maxe {
maxe = offset[1]
@ -269,7 +269,7 @@ func (*Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int) {
text = append(text[:maxe], []rune("..")...)
}
// ..ri..
var diff int
var diff int32
text, diff = trimLeft(text, maxWidth-2)
// Transform offsets
@ -278,7 +278,7 @@ func (*Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int) {
b, e := offset[0], offset[1]
b += 2 - diff
e += 2 - diff
b = Max(b, 2)
b = Max32(b, 2)
if b < e {
offsets[idx] = Offset{b, e}
}
@ -288,15 +288,15 @@ func (*Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int) {
}
sort.Sort(ByOrder(offsets))
index := 0
var index int32 = 0
for _, offset := range offsets {
b := Max(index, offset[0])
e := Max(index, offset[1])
b := Max32(index, offset[0])
e := Max32(index, offset[1])
C.CPrint(col1, bold, string(text[index:b]))
C.CPrint(col2, bold, string(text[b:e]))
index = e
}
if index < len(text) {
if index < int32(len(text)) {
C.CPrint(col1, bold, string(text[index:]))
}
}

7
src/util.go
View File

@ -12,6 +12,13 @@ func Max(first int, items ...int) int {
return max
}
func Max32(first int32, second int32) int32 {
if first > second {
return first
}
return second
}
func Min(first int, items ...int) int {
min := first
for _, item := range items {