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Performance optimization

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This commit is contained in:
yuin 2019-05-02 22:51:24 +09:00
parent d4d7acb277
commit 9b40d12434
1 changed files with 10 additions and 9 deletions
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19
parser/parser.go
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@ -793,27 +793,27 @@ type lineStat struct {
isBlank bool
}
func isBlankLine(lineNum, level int, stats []lineStat) ([]lineStat, bool) {
func isBlankLine(lineNum, level int, stats []lineStat) bool {
ret := false
for i := len(stats) - 1 - level; i >= 0; i-- {
s := stats[i]
if s.lineNum == lineNum {
if s.level < level && s.isBlank {
return stats[i:], true
return true
} else if s.level == level {
return stats[i:], s.isBlank
return s.isBlank
}
}
if s.lineNum < lineNum {
return stats[i:], ret
return ret
}
}
return stats, ret
return ret
}
func (p *parser) parseBlocks(parent ast.Node, reader text.Reader, pc Context) {
pc.SetOpenedBlocks([]Block{})
blankLines := make([]lineStat, 0, 64)
blankLines := make([]lineStat, 0, 128)
isBlank := false
for { // process blocks separated by blank lines
_, lines, ok := reader.SkipBlankLines()
@ -822,12 +822,13 @@ func (p *parser) parseBlocks(parent ast.Node, reader text.Reader, pc Context) {
}
lineNum, _ := reader.Position()
if lines != 0 {
blankLines = blankLines[0:0]
l := len(pc.OpenedBlocks())
for i := 0; i < l; i++ {
blankLines = append(blankLines, lineStat{lineNum - 1, i, lines != 0})
}
}
blankLines, isBlank = isBlankLine(lineNum-1, 0, blankLines)
isBlank = isBlankLine(lineNum-1, 0, blankLines)
// first, we try to open blocks
if p.openBlocks(parent, isBlank, reader, pc) != newBlocksOpened {
return
@ -858,7 +859,7 @@ func (p *parser) parseBlocks(parent ast.Node, reader text.Reader, pc Context) {
// When current node is a container block and has no children,
// we try to open new child nodes
if state&HasChildren != 0 && i == lastIndex {
blankLines, isBlank = isBlankLine(lineNum-1, i, blankLines)
isBlank = isBlankLine(lineNum-1, i, blankLines)
p.openBlocks(be.Node, isBlank, reader, pc)
break
}
@ -866,7 +867,7 @@ func (p *parser) parseBlocks(parent ast.Node, reader text.Reader, pc Context) {
}
}
// current node may be closed or lazy continuation
blankLines, isBlank = isBlankLine(lineNum-1, i, blankLines)
isBlank = isBlankLine(lineNum-1, i, blankLines)
thisParent := parent
if i != 0 {
thisParent = openedBlocks[i-1].Node