I rewrote most of tools/lib/pretty-printer.py, which
was fairly easy due to being able to crib some
important details from the previous implementation.
The main motivation for the rewrite was that we weren't
handling else/elif blocks correctly, and it was difficult
to modify the previous code. The else/elif shortcomings
were somewhat historical in nature--the original parser
didn't recognize them (since they weren't in any Zulip
templates at the time), and then the pretty printer was
mostly able to hack around that due to the "nudge"
strategy. Eventually the nudge strategy became too
brittle.
The "nudge" strategy was that we would mostly trust
the existing templates, and we would just nudge over
some lines in cases of obviously faulty indentation.
Now we are bit more opinionated and rigorous, and
we basically set the indentation explicitly for any
line that is not in a code/script block. This leads
to this diff touching several templates for mostly
minor fix-ups.
We aren't completely opinionated, as we respect the
author's line wrapping decisions in many cases, and
we also allow authors not to indent blocks within
the template language's block constructs.
In cases where an opening tag is so long that we stretch
it to 2+ lines of code, we should try to use block-style
formatting in the template code.
Unfortunately, we have lots of legacy code that violates
this concept, so this is a timid fix.
There are also legit use cases like textarea where we
probably need to keep the ugly template syntax for things
to render properly.
We disallow this HTML:
junk-text-before-open-tag<p>
This is a paragraph.
</p>
We rarely see the above mistake, but we want to eliminate
the possibility to be somewhat rigorous, and so that we
can eliminate a pretty-printer mis-feature.
This reverses the policy that was set, but incompletely enforced, by
commit 951514dd7d. The self-closing tag
syntax is clearer, more consistent, simpler to parse, compatible with
XML, preferred by Prettier, and (most importantly now) required by
FormatJS.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Generated by pyupgrade --py36-plus --keep-percent-format.
Now including %d, %i, %u, and multi-line strings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Fixes#2665.
Regenerated by tabbott with `lint --fix` after a rebase and change in
parameters.
Note from tabbott: In a few cases, this converts technical debt in the
form of unsorted imports into different technical debt in the form of
our largest files having very long, ugly import sequences at the
start. I expect this change will increase pressure for us to split
those files, which isn't a bad thing.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Automatically generated by the following script, based on the output
of lint with flake8-comma:
import re
import sys
last_filename = None
last_row = None
lines = []
for msg in sys.stdin:
m = re.match(
r"\x1b\[35mflake8 \|\x1b\[0m \x1b\[1;31m(.+):(\d+):(\d+): (\w+)", msg
)
if m:
filename, row_str, col_str, err = m.groups()
row, col = int(row_str), int(col_str)
if filename == last_filename:
assert last_row != row
else:
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
with open(filename) as f:
lines = f.readlines()
last_filename = filename
last_row = row
line = lines[row - 1]
if err in ["C812", "C815"]:
lines[row - 1] = line[: col - 1] + "," + line[col - 1 :]
elif err in ["C819"]:
assert line[col - 2] == ","
lines[row - 1] = line[: col - 2] + line[col - 1 :].lstrip(" ")
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
We now prevent these variations:
* <hr/>
* <hr />
* <br/>
* <br />
We could enforce similar consistency for other void
tags, if we wished, but these two are particularly
prevalent.
We now forbid tags of the form `<foo ... />` in most
places, and we also forbid it even for several void
tags.
We make exceptions for tags that are already formatted
in two different ways in our codebase. This is mostly
svg tags, plus these common cases:
- br
- hr
- img
- input
It would be nice to lock down a convention for these,
even though the HTML specification is unopinionated
on these. We'll probably want to stay flexible for
svg tags, since they are sometimes copy/pasted from
other sources (although it's probably rare enough for
them that we can tolerate just doing minor edits as
needed).
If folks put something like '<br/>' in the HTML,
we would think the tag's name was "br/" instead
of "br". I think we were assuming most folks
would write either "<br>" or <br />".
ASIDE:
We should probably have a consistent
preference among these styles:
* <br>
* <br/>
* <br />
I prefer the first.
Generated by `pyupgrade --py3-plus --keep-percent-format` on all our
Python code except `zthumbor` and `zulip-ec2-configure-interfaces`,
followed by manual indentation fixes.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
In this commit, we basically match any kinda of jinja2 start tag,
no matter its special kind (eg. jinja2_whitespace_stripped_start)
to any kinda jinja2 end tag (eg. jinja2_whitespace_stripped_end)
Idea is special operators like `-` do not change the meaning of
inline tag and thus matching shouldn't depend upon this.
In this commit we add support for some tags which are also called
void-elements according to
http://w3c.github.io/html/syntax.html#void-elements to be parsed by
our template parser and get tagged as singleton_html_tags.
Fixes: #8387.
Tweaked by tabbott to not remove it from lister.py, linter_lib, and
friends, since those are intended to support both Python 2 and 3
(we're planning to extract them from the repository).
Handlebars allows putting tildes (~) by the braces in mustache tags to
strip whitespaces on that side of the tag.
{{#if foo~}}
<p>Bar</p>
{{~/if}}
This way, the linter ignores any potential tilde at the ends of Handlebars
tags so we can use this feature without lint fails.
In this commit we add the ability of recognizing comments in
handlebar and Jinja2 templates to the template parser. This
fixes issue of template parser picking up code tags which are
commented out in files.
Also we fix the problem of too much deep nesting in the Jinja2
logic statement. Now only nested Jinja2 logic statements will get
a deeper indentation level.With this another fix was introduced
relating with the tags before a nested handlebar or django tag getting
wrong indent.
We also fix the issue with wrong offsets with closing tags in
cases if they were not matching indent level of the starting
tag intially.
Also we also start to ignore any tags occuring in between 'pre'
tags for deeper indent levels. As well we start to filter out django
non block tags from getting deeper indent level.
In this commit we are modifying pretty print tool to support
Django and html singleton tags. For Addition of html singleton
tags template parser was modified to emit psudeo
html singleton end tags to accompany html singleton tags and
token class was updated to have line_span field.
In this commit we improve the way errors are handled in our
template parser and thus improving the displayed messages in
case of errors. Eg. Errors in case of unbalanced quotes now
makes more sense displaying line and column information
including line where error might be sourced.
This code is not directly related to the template parser, so it
can safely live in its own file.
The only significant change to the code is to the signature of
`html_branches` so that it can be called without requiring a file.
Since it's only used in html_grep, that has been updated to reflect
this change.
Fixes: #1774.
Fixed IndexError when there is only zero or more whitespace characters
between < and >. (str.split() will return an empty list in this case, which
means there is no index 0.)
* Replace generic Exception with TemplateParserException.
* Add tests to cover many of the uncovered lines in
tools/lib/template_parser.py.
* Add an exclusion line to the naïve pattern for checking for missing
tuples in format strings, to keep the linter happy.
