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Add more performance and memory optimizations

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This commit is contained in:
Zachary Yedidia
2017-03-24 14:11:21 -04:00
parent 87f54be13a
commit d413562145
6 changed files with 84 additions and 73 deletions
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4
cmd/micro/highlight/ftdetect.go
View File

@@ -2,11 +2,11 @@ package highlight
func DetectFiletype(defs []*Def, filename string, firstLine []byte) *Def {
for _, d := range defs {
if isMatch, _ := d.ftdetect[0].MatchString(filename); isMatch {
if d.ftdetect[0].MatchString(filename) {
return d
}
if len(d.ftdetect) > 1 {
if isMatch, _ := d.ftdetect[1].MatchString(string(firstLine)); isMatch {
if d.ftdetect[1].MatchString(string(firstLine)) {
return d
}
}

131
cmd/micro/highlight/highlighter.go
View File

@@ -25,7 +25,8 @@ type State *Region
// LineStates is an interface for a buffer-like object which can also store the states and matches for every line
type LineStates interface {
LineData() [][]byte
Line(n int) string
LinesNum() int
State(lineN int) State
SetState(lineN int, s State)
SetMatch(lineN int, m LineMatch)
@@ -82,34 +83,35 @@ func findAllIndex(regex *regexp.Regexp, str []byte, canMatchStart, canMatchEnd b
return regex.FindAllIndex(str, -1)
}
func (h *Highlighter) highlightRegion(start int, canMatchEnd bool, lineNum int, line []byte, region *Region) LineMatch {
fullHighlights := make([]uint8, len([]rune(string(line))))
for i := 0; i < len(fullHighlights); i++ {
fullHighlights[i] = region.group
}
highlights := make(LineMatch)
func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, region *Region, statesOnly bool) LineMatch {
// highlights := make(LineMatch)
if start == 0 {
highlights[0] = region.group
if !statesOnly {
highlights[0] = region.group
}
}
loc := findIndex(region.end, line, start == 0, canMatchEnd)
if loc != nil {
highlights[start+loc[1]-1] = region.group
if region.parent == nil {
highlights[start+loc[1]] = 0
return combineLineMatch(highlights,
combineLineMatch(h.highlightRegion(start, false, lineNum, line[:loc[0]], region),
h.highlightEmptyRegion(start+loc[1], canMatchEnd, lineNum, line[loc[1]:])))
if !statesOnly {
highlights[start+loc[1]] = 0
}
h.highlightRegion(highlights, start, false, lineNum, line[:loc[0]], region, statesOnly)
h.highlightEmptyRegion(highlights, start+loc[1], canMatchEnd, lineNum, line[loc[1]:], statesOnly)
return highlights
}
highlights[start+loc[1]] = region.parent.group
return combineLineMatch(highlights,
combineLineMatch(h.highlightRegion(start, false, lineNum, line[:loc[0]], region),
h.highlightRegion(start+loc[1], canMatchEnd, lineNum, line[loc[1]:], region.parent)))
if !statesOnly {
highlights[start+loc[1]] = region.parent.group
}
h.highlightRegion(highlights, start, false, lineNum, line[:loc[0]], region, statesOnly)
h.highlightRegion(highlights, start+loc[1], canMatchEnd, lineNum, line[loc[1]:], region.parent, statesOnly)
return highlights
}
if len(line) == 0 {
if len(line) == 0 || statesOnly {
if canMatchEnd {
h.lastRegion = region
}
@@ -130,9 +132,14 @@ func (h *Highlighter) highlightRegion(start int, canMatchEnd bool, lineNum int,
}
if firstLoc[0] != len(line) {
highlights[start+firstLoc[0]] = firstRegion.group
return combineLineMatch(highlights,
combineLineMatch(h.highlightRegion(start, false, lineNum, line[:firstLoc[0]], region),
h.highlightRegion(start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion)))
h.highlightRegion(highlights, start, false, lineNum, line[:firstLoc[0]], region, statesOnly)
h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion, statesOnly)
return highlights
}
fullHighlights := make([]uint8, len([]rune(string(line))))
for i := 0; i < len(fullHighlights); i++ {
fullHighlights[i] = region.group
}
for _, p := range region.rules.patterns {
@@ -158,9 +165,7 @@ func (h *Highlighter) highlightRegion(start int, canMatchEnd bool, lineNum int,
return highlights
}
func (h *Highlighter) highlightEmptyRegion(start int, canMatchEnd bool, lineNum int, line []byte) LineMatch {
fullHighlights := make([]uint8, len(line))
highlights := make(LineMatch)
func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, statesOnly bool) LineMatch {
if len(line) == 0 {
if canMatchEnd {
h.lastRegion = nil
@@ -180,12 +185,23 @@ func (h *Highlighter) highlightEmptyRegion(start int, canMatchEnd bool, lineNum
}
}
if firstLoc[0] != len(line) {
highlights[start+firstLoc[0]] = firstRegion.group
return combineLineMatch(highlights,
combineLineMatch(h.highlightEmptyRegion(start, false, lineNum, line[:firstLoc[0]]),
h.highlightRegion(start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion)))
if !statesOnly {
highlights[start+firstLoc[0]] = firstRegion.group
}
h.highlightEmptyRegion(highlights, start, false, lineNum, line[:firstLoc[0]], statesOnly)
h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion, statesOnly)
return highlights
}
if statesOnly {
if canMatchEnd {
h.lastRegion = nil
}
return highlights
}
fullHighlights := make([]uint8, len(line))
for _, p := range h.def.rules.patterns {
matches := findAllIndex(p.regex, line, start == 0, canMatchEnd)
for _, m := range matches {
@@ -219,11 +235,12 @@ func (h *Highlighter) HighlightString(input string) []LineMatch {
for i := 0; i < len(lines); i++ {
line := []byte(lines[i])
highlights := make(LineMatch)
if i == 0 || h.lastRegion == nil {
lineMatches = append(lineMatches, h.highlightEmptyRegion(0, true, i, line))
lineMatches = append(lineMatches, h.highlightEmptyRegion(highlights, 0, true, i, line, false))
} else {
lineMatches = append(lineMatches, h.highlightRegion(0, true, i, line, h.lastRegion))
lineMatches = append(lineMatches, h.highlightRegion(highlights, 0, true, i, line, h.lastRegion, false))
}
}
@@ -232,15 +249,14 @@ func (h *Highlighter) HighlightString(input string) []LineMatch {
// HighlightStates correctly sets all states for the buffer
func (h *Highlighter) HighlightStates(input LineStates) {
lines := input.LineData()
for i := 0; i < len(lines); i++ {
line := []byte(lines[i])
for i := 0; i < input.LinesNum(); i++ {
line := []byte(input.Line(i))
// highlights := make(LineMatch)
if i == 0 || h.lastRegion == nil {
h.highlightEmptyRegion(0, true, i, line)
h.highlightEmptyRegion(nil, 0, true, i, line, true)
} else {
h.highlightRegion(0, true, i, line, h.lastRegion)
h.highlightRegion(nil, 0, true, i, line, h.lastRegion, true)
}
curState := h.lastRegion
@@ -253,43 +269,39 @@ func (h *Highlighter) HighlightStates(input LineStates) {
// It sets all other matches in the buffer to nil to conserve memory
// This assumes that all the states are set correctly
func (h *Highlighter) HighlightMatches(input LineStates, startline, endline int) {
lines := input.LineData()
for i := startline; i < endline; i++ {
line := []byte(input.Line(i))
highlights := make(LineMatch)
for i := 0; i < len(lines); i++ {
if i >= startline && i < endline {
line := []byte(lines[i])
var match LineMatch
if i == 0 || input.State(i-1) == nil {
match = h.highlightEmptyRegion(0, true, i, line)
} else {
match = h.highlightRegion(0, true, i, line, input.State(i-1))
}
input.SetMatch(i, match)
var match LineMatch
if i == 0 || input.State(i-1) == nil {
match = h.highlightEmptyRegion(highlights, 0, true, i, line, false)
} else {
input.SetMatch(i, nil)
match = h.highlightRegion(highlights, 0, true, i, line, input.State(i-1), false)
}
input.SetMatch(i, match)
}
}
// ReHighlightStates will scan down from `startline` and set the appropriate end of line state
// for each line until it comes across the same state in two consecutive lines
func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
lines := input.LineData()
// lines := input.LineData()
h.lastRegion = nil
if startline > 0 {
h.lastRegion = input.State(startline - 1)
}
for i := startline; i < len(lines); i++ {
line := []byte(lines[i])
for i := startline; i < input.LinesNum(); i++ {
line := []byte(input.Line(i))
// highlights := make(LineMatch)
// var match LineMatch
if i == 0 || h.lastRegion == nil {
h.highlightEmptyRegion(0, true, i, line)
h.highlightEmptyRegion(nil, 0, true, i, line, true)
} else {
h.highlightRegion(0, true, i, line, h.lastRegion)
h.highlightRegion(nil, 0, true, i, line, h.lastRegion, true)
}
curState := h.lastRegion
lastState := input.State(i)
@@ -304,9 +316,8 @@ func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
// ReHighlightLine will rehighlight the state and match for a single line
func (h *Highlighter) ReHighlightLine(input LineStates, lineN int) {
lines := input.LineData()
line := []byte(lines[lineN])
line := []byte(input.Line(lineN))
highlights := make(LineMatch)
h.lastRegion = nil
if lineN > 0 {
@@ -315,9 +326,9 @@ func (h *Highlighter) ReHighlightLine(input LineStates, lineN int) {
var match LineMatch
if lineN == 0 || h.lastRegion == nil {
match = h.highlightEmptyRegion(0, true, lineN, line)
match = h.highlightEmptyRegion(highlights, 0, true, lineN, line, false)
} else {
match = h.highlightRegion(0, true, lineN, line, h.lastRegion)
match = h.highlightRegion(highlights, 0, true, lineN, line, h.lastRegion, false)
}
curState := h.lastRegion

6
cmd/micro/highlight/parser.go
View File

@@ -27,7 +27,7 @@ func GetGroup(n uint8) string {
// Then it has the rules which define how to highlight the file
type Def struct {
FileType string
ftdetect []*regexp2.Regexp
ftdetect []*regexp.Regexp
rules *Rules
}
@@ -88,7 +88,7 @@ func ParseDef(input []byte) (s *Def, err error) {
} else if k == "detect" {
ftdetect := v.(map[interface{}]interface{})
if len(ftdetect) >= 1 {
syntax, err := regexp2.Compile(ftdetect["filename"].(string), 0)
syntax, err := regexp.Compile(ftdetect["filename"].(string))
if err != nil {
return nil, err
}
@@ -96,7 +96,7 @@ func ParseDef(input []byte) (s *Def, err error) {
s.ftdetect = append(s.ftdetect, syntax)
}
if len(ftdetect) >= 2 {
header, err := regexp2.Compile(ftdetect["header"].(string), 0)
header, err := regexp.Compile(ftdetect["header"].(string))
if err != nil {
return nil, err
}