hugo/tpl/collections
Bjørn Erik Pedersen c6d650c8c8
tpl/tplimpl: Rework template management to get rid of concurrency issues
This more or less completes the simplification of the template handling code in Hugo started in v0.62.

The main motivation was to fix a long lasting issue about a crash in HTML content files  without front matter.

But this commit also comes with a big functional improvement.

As we now have moved the base template evaluation to the build stage we now use the same lookup rules for `baseof` as for `list` etc. type of templates.

This means that in this simple example you can have a `baseof` template for the `blog` section without having to duplicate the others:

```
layouts
├── _default
│   ├── baseof.html
│   ├── list.html
│   └── single.html
└── blog
    └── baseof.html
```

Also, when simplifying code, you often get rid of some double work, as shown in the "site building" benchmarks below.

These benchmarks looks suspiciously good, but I have repeated the below with ca. the same result. Compared to master:

```
name                              old time/op    new time/op    delta
SiteNew/Bundle_with_image-16        13.1ms ± 1%    10.5ms ± 1%  -19.34%  (p=0.029 n=4+4)
SiteNew/Bundle_with_JSON_file-16    13.0ms ± 0%    10.7ms ± 1%  -18.05%  (p=0.029 n=4+4)
SiteNew/Tags_and_categories-16      46.4ms ± 2%    43.1ms ± 1%   -7.15%  (p=0.029 n=4+4)
SiteNew/Canonify_URLs-16            52.2ms ± 2%    47.8ms ± 1%   -8.30%  (p=0.029 n=4+4)
SiteNew/Deep_content_tree-16        77.9ms ± 1%    70.9ms ± 1%   -9.01%  (p=0.029 n=4+4)
SiteNew/Many_HTML_templates-16      43.0ms ± 0%    37.2ms ± 1%  -13.54%  (p=0.029 n=4+4)
SiteNew/Page_collections-16         58.2ms ± 1%    52.4ms ± 1%   -9.95%  (p=0.029 n=4+4)

name                              old alloc/op   new alloc/op   delta
SiteNew/Bundle_with_image-16        3.81MB ± 0%    2.22MB ± 0%  -41.70%  (p=0.029 n=4+4)
SiteNew/Bundle_with_JSON_file-16    3.60MB ± 0%    2.01MB ± 0%  -44.20%  (p=0.029 n=4+4)
SiteNew/Tags_and_categories-16      19.3MB ± 1%    14.1MB ± 0%  -26.91%  (p=0.029 n=4+4)
SiteNew/Canonify_URLs-16            70.7MB ± 0%    69.0MB ± 0%   -2.40%  (p=0.029 n=4+4)
SiteNew/Deep_content_tree-16        37.1MB ± 0%    31.2MB ± 0%  -15.94%  (p=0.029 n=4+4)
SiteNew/Many_HTML_templates-16      17.6MB ± 0%    10.6MB ± 0%  -39.92%  (p=0.029 n=4+4)
SiteNew/Page_collections-16         25.9MB ± 0%    21.2MB ± 0%  -17.99%  (p=0.029 n=4+4)

name                              old allocs/op  new allocs/op  delta
SiteNew/Bundle_with_image-16         52.3k ± 0%     26.1k ± 0%  -50.18%  (p=0.029 n=4+4)
SiteNew/Bundle_with_JSON_file-16     52.3k ± 0%     26.1k ± 0%  -50.16%  (p=0.029 n=4+4)
SiteNew/Tags_and_categories-16        336k ± 1%      269k ± 0%  -19.90%  (p=0.029 n=4+4)
SiteNew/Canonify_URLs-16              422k ± 0%      395k ± 0%   -6.43%  (p=0.029 n=4+4)
SiteNew/Deep_content_tree-16          401k ± 0%      313k ± 0%  -21.79%  (p=0.029 n=4+4)
SiteNew/Many_HTML_templates-16        247k ± 0%      143k ± 0%  -42.17%  (p=0.029 n=4+4)
SiteNew/Page_collections-16           282k ± 0%      207k ± 0%  -26.55%  (p=0.029 n=4+4)
```

Fixes #6716
Fixes #6760
Fixes #6768
Fixes #6778
2020-01-22 09:39:49 +01:00
..
append.go common/maps: Improve append in Scratch 2018-10-08 12:30:50 +02:00
append_test.go tests: Convert from testify to quicktest 2019-08-12 13:26:32 +02:00
apply.go tpl/tplimpl: Rework template management to get rid of concurrency issues 2020-01-22 09:39:49 +01:00
apply_test.go tpl/tplimpl: Rework template management to get rid of concurrency issues 2020-01-22 09:39:49 +01:00
collections.go Create lightweight forks of text/template and html/template 2019-12-12 09:59:34 +01:00
collections_test.go Create lightweight forks of text/template and html/template 2019-12-12 09:59:34 +01:00
complement.go tpl/collections: Add collections.SymDiff 2018-11-06 16:51:49 +01:00
complement_test.go tests: Convert from testify to quicktest 2019-08-12 13:26:32 +02:00
index.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00
index_test.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00
init.go tpl/collections: Add Merge function 2019-07-15 20:47:35 +02:00
init_test.go tests: Convert from testify to quicktest 2019-08-12 13:26:32 +02:00
merge.go tpl/collections: Some more params merge adjustments 2019-12-19 20:50:30 +01:00
merge_test.go tpl/collections: Some more params merge adjustments 2019-12-19 20:50:30 +01:00
reflect_helpers.go all: Apply staticcheck recommendations 2019-03-24 16:14:51 +01:00
sort.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00
sort_test.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00
symdiff.go tpl/collections: Add collections.SymDiff 2018-11-06 16:51:49 +01:00
symdiff_test.go tests: Convert from testify to quicktest 2019-08-12 13:26:32 +02:00
where.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00
where_test.go Fix Params case handling in the index, sort and where func 2019-11-22 18:41:50 +01:00