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godoc: use file instead of file set for computing line info

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Reduces indexing time by ~10%; from ~44s to ~39s, best of 3 runs.

R=rsc
CC=golang-dev
https://golang.org/cl/3510041
This commit is contained in:
Robert Griesemer 2010-12-07 21:55:32 -08:00
parent 1612b8734a
commit 4ba27e27f3
1 changed files with 5 additions and 2 deletions
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7
src/cmd/godoc/index.go
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@ -432,6 +432,7 @@ type Indexer struct {
fset *token.FileSet // file set for all indexed files
words map[string]*IndexResult // RunLists of Spots
snippets vector.Vector // vector of *Snippets, indexed by snippet indices
current *token.File // last file added to file set
file *File // current file
decl ast.Decl // current decl
nspots int // number of spots encountered
@ -462,7 +463,7 @@ func (x *Indexer) visitIdent(kind SpotKind, id *ast.Ident) {
if kind == Use || x.decl == nil {
// not a declaration or no snippet required
info := makeSpotInfo(kind, x.fset.Position(id.Pos()).Line, false)
info := makeSpotInfo(kind, x.current.Line(id.Pos()), false)
lists.Others.Push(Spot{x.file, info})
} else {
// a declaration with snippet
@ -608,6 +609,7 @@ func (x *Indexer) visitFile(dirname string, f *os.FileInfo) {
return // ignore files with (parse) errors
}
x.current = x.fset.File(file.Pos()) // file.Pos is in the current file
dir, _ := pathutil.Split(path)
pak := Pak{dir, file.Name.Name}
x.file = &File{path, pak}
@ -658,8 +660,9 @@ func NewIndex(dirnames <-chan string) *Index {
}
}
// the file set is not needed after indexing - help GC and clear it
// the file set and current file are not needed after indexing - help GC and clear them
x.fset = nil
x.current = nil // contains reference to fset!
// for each word, reduce the RunLists into a LookupResult;
// also collect the word with its canonical spelling in a