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hugolib: Speed up GetPage

When we know to look into the index pages collection, do that:

```
benchmark              old ns/op     new ns/op     delta
BenchmarkGetPage-4     51483         7072          -86.26%

benchmark              old allocs     new allocs     delta
BenchmarkGetPage-4     71             71             +0.00%

benchmark              old bytes     new bytes     delta
BenchmarkGetPage-4     2648          2648          +0.00%
```

This commit also returns an error if .Site.GetPage is called with the regular Page Kind, as that is currently not supported.

Fixes #3503
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bep committed May 22, 2017
1 parent 6c56028 commit fbb78b89df8ccef8f0ab26af00aa45d35c1ee2cf
Showing with 21 additions and 4 deletions.
  1. +16 −2 hugolib/page_collections.go
  2. +5 −2 hugolib/site.go
@@ -51,8 +51,8 @@ func newPageCollectionsFromPages(pages Pages) *PageCollections {
return &PageCollections{rawAllPages: pages}
}
func (c *PageCollections) getPage(typ string, path ...string) *Page {
pages := c.findPagesByKindIn(typ, c.Pages)
func (c *PageCollections) getFirstPageMatchIn(ps Pages, typ string, path ...string) *Page {
pages := c.findPagesByKindIn(typ, ps)
if len(pages) == 0 {
return nil
@@ -78,6 +78,20 @@ func (c *PageCollections) getPage(typ string, path ...string) *Page {
}
return nil
}
func (c *PageCollections) getPage(typ string, path ...string) *Page {
var pages Pages
if typ == KindPage {
pages = c.RegularPages
} else {
pages = c.indexPages
}
return c.getFirstPageMatchIn(pages, typ, path...)
}
func (*PageCollections) findPagesByKindIn(kind string, inPages Pages) Pages {
View
@@ -1906,8 +1906,11 @@ func (s *Site) Stats() {
// This will return nil when no page could be found.
//
// The valid page types are: home, section, taxonomy and taxonomyTerm
func (s *SiteInfo) GetPage(typ string, path ...string) *Page {
return s.getPage(typ, path...)
func (s *SiteInfo) GetPage(typ string, path ...string) (*Page, error) {
if typ == KindPage {
return nil, errors.New("GetPage not supported for regular pages")
}
return s.getPage(typ, path...), nil
}
func (s *Site) permalinkForOutputFormat(link string, f output.Format) (string, error) {

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