Commit graph

20 commits

Author SHA1 Message Date
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
Bjørn Erik Pedersen
e625088ef5
Add render template hooks for links and images
This commit also

* revises the change detection for templates used by content files in server mode.
* Adds a Page.RenderString method

Fixes #6545
Fixes #4663
Closes #6043
2019-12-18 11:44:40 +01:00
Bjørn Erik Pedersen
a03c631c42
Rework template handling for function and map lookups
This is a big commit, but it deletes lots of code and simplifies a lot.

* Resolving the template funcs at execution time means we don't have to create template clones per site
* Having a custom map resolver means that we can remove the AST lower case transformation for the special lower case Params map

Not only is the above easier to reason about, it's also faster, especially if you have more than one language, as in the benchmark below:

```
name                          old time/op    new time/op    delta
SiteNew/Deep_content_tree-16    53.7ms ± 0%    48.1ms ± 2%  -10.38%  (p=0.029 n=4+4)

name                          old alloc/op   new alloc/op   delta
SiteNew/Deep_content_tree-16    41.0MB ± 0%    36.8MB ± 0%  -10.26%  (p=0.029 n=4+4)

name                          old allocs/op  new allocs/op  delta
SiteNew/Deep_content_tree-16      481k ± 0%      410k ± 0%  -14.66%  (p=0.029 n=4+4)
```

This should be even better if you also have lots of templates.

Closes #6594
2019-12-12 10:04:35 +01:00
Bjørn Erik Pedersen
167c01530b
Create lightweight forks of text/template and html/template
This commit also removes support for Ace and Amber templates.

Updates #6594
2019-12-12 09:59:34 +01:00
Bjørn Erik Pedersen
0efb00c2a8 tpl/partials: Allow any key type in partialCached
Fixes #6572
2019-12-03 00:13:47 +01:00
Bjørn Erik Pedersen
a55640de8e
tpl: Allow the partial template func to return any type
This commit adds support for return values in partials.

This means that you can now do this and similar:

    {{ $v := add . 42 }}
    {{ return $v }}

Partials without a `return` statement will be rendered as before.

This works for both `partial` and `partialCached`.

Fixes #5783
2019-04-02 10:30:24 +02:00
Bjørn Erik Pedersen
b5f39d23b8 all: Apply staticcheck recommendations 2019-03-24 16:14:51 +01:00
Iskander (Alex) Sharipov
7201042946 tpl: Fix strings.HasPrefix args order 2019-02-02 01:26:05 +01:00
Cameron Moore
30a7c9ea37 tpl: Add godoc packages comments
Also fix package name in tpl/templates.
2018-11-30 08:56:30 +01:00
Bjørn Erik Pedersen
0afa2897a0 tpl/partials: Remove superflous loop
No need to check the themes template prefix.
2018-07-31 13:28:15 +02:00
Bjørn Erik Pedersen
6b6dcb44a0 Flush partialCached cache on rebuilds
Fixes #4931
2018-07-11 20:40:04 +02:00
Bjørn Erik Pedersen
dea71670c0
Add Hugo Piper with SCSS support and much more
Before this commit, you would have to use page bundles to do image processing etc. in Hugo.

This commit adds

* A new `/assets` top-level project or theme dir (configurable via `assetDir`)
* A new template func, `resources.Get` which can be used to "get a resource" that can be further processed.

This means that you can now do this in your templates (or shortcodes):

```bash
{{ $sunset := (resources.Get "images/sunset.jpg").Fill "300x200" }}
```

This also adds a new `extended` build tag that enables powerful SCSS/SASS support with source maps. To compile this from source, you will also need a C compiler installed:

```
HUGO_BUILD_TAGS=extended mage install
```

Note that you can use output of the SCSS processing later in a non-SCSSS-enabled Hugo.

The `SCSS` processor is a _Resource transformation step_ and it can be chained with the many others in a pipeline:

```bash
{{ $css := resources.Get "styles.scss" | resources.ToCSS | resources.PostCSS | resources.Minify | resources.Fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```

The transformation funcs above have aliases, so it can be shortened to:

```bash
{{ $css := resources.Get "styles.scss" | toCSS | postCSS | minify | fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```

A quick tip would be to avoid the fingerprinting part, and possibly also the not-superfast `postCSS` when you're doing development, as it allows Hugo to be smarter about the rebuilding.

Documentation will follow, but have a look at the demo repo in https://github.com/bep/hugo-sass-test

New functions to create `Resource` objects:

* `resources.Get` (see above)
* `resources.FromString`: Create a Resource from a string.

New `Resource` transformation funcs:

* `resources.ToCSS`: Compile `SCSS` or `SASS` into `CSS`.
* `resources.PostCSS`: Process your CSS with PostCSS. Config file support (project or theme or passed as an option).
* `resources.Minify`: Currently supports `css`, `js`, `json`, `html`, `svg`, `xml`.
* `resources.Fingerprint`: Creates a fingerprinted version of the given Resource with Subresource Integrity..
* `resources.Concat`: Concatenates a list of Resource objects. Think of this as a poor man's bundler.
* `resources.ExecuteAsTemplate`: Parses and executes the given Resource and data context (e.g. .Site) as a Go template.

Fixes #4381
Fixes #4903
Fixes #4858
2018-07-06 11:46:12 +02:00
Bjørn Erik Pedersen
6233ddf9d1
tpl/partials: Fix the lock contention in cached partial
Fixes #4086
2017-11-16 11:59:45 +01:00
Bjørn Erik Pedersen
f5ed04bd4a
tpl/partials: Fix cache locking
To make sure a cached partial is ony executed  exactly once.

Performance same:

```bash
name                         old time/op    new time/op    delta
TemplateParamsKeysToLower-4    17.2µs ± 0%    16.5µs ± 0%   ~     (p=1.000 n=1+1)
Partial-4                      18.6µs ± 0%    19.4µs ± 0%   ~     (p=1.000 n=1+1)
PartialCached-4                64.2ns ± 0%    63.7ns ± 0%   ~     (p=1.000 n=1+1)

name                         old alloc/op   new alloc/op   delta
TemplateParamsKeysToLower-4    2.66kB ± 0%    2.66kB ± 0%   ~     (all equal)
Partial-4                      1.31kB ± 0%    1.31kB ± 0%   ~     (all equal)
PartialCached-4                 0.00B          0.00B        ~     (all equal)

name                         old allocs/op  new allocs/op  delta
TemplateParamsKeysToLower-4      92.0 ± 0%      92.0 ± 0%   ~     (all equal)
Partial-4                        41.0 ± 0%      41.0 ± 0%   ~     (all equal)
```
2017-11-16 01:23:37 +01:00
Bjørn Erik Pedersen
5800a20a25 metrics: Detect partialCached candidates
This commit adds a "cache potential" column when running `hugo --templateMetrics --templateMetricsHints`.

This is only calculated when `--templateMetricsHints` is set, as these calculations has an negative effect on the other timings.

This gives a value for partials only, and is a number between 0-100 that indicates if `partial` can be replaced with `partialCached`.

100 means that all execution of the same partial resulted in the same output.

You should do  some manual research before going "all cache".
2017-10-07 18:00:07 +02:00
Bjørn Erik Pedersen
e2e8bcbec3
tpl: Rework the partial test and benchmarks 2017-10-07 16:53:01 +02:00
Jorin Vogel
81c13171a9 Add some missing doc comments
As pointed out by the linter, some exported functions and types are
missing doc comments.
The linter warnings have been reduced from 194 to 116.
Not all missing comments have been added in this commit though.
2017-08-03 15:57:51 +02:00
Bjørn Erik Pedersen
d8717cd4c7 all: Update import paths to gohugoio/hugo 2017-06-13 18:42:45 +02:00
Bjørn Erik Pedersen
e2b067f050 tpl/partials: Remouve unused method 2017-05-01 15:57:52 +02:00
Bjørn Erik Pedersen
0e2260421e tpl: Fix the remaining template funcs namespace issues
See #3042
2017-05-01 15:13:41 +02:00