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<?xml version="1.0" encoding="UTF-8"?>
<!-- vim: tabstop=2 shiftwidth=2
yaml.lang basic syntax highlighting of YAML for GtkSourceView
Copyright (C) 2013 Masood Behabadi <masood@dentcat.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see <http://www.gnu.org/licenses/>.
-->
<language id="yaml" name="YAML" _section="Other" version="2.0">
<metadata>
<property name="mimetypes">application/x-yaml</property>
<property name="globs">*.yaml;*.yml;</property>
<property name="line-comment-start">#</property>
</metadata>
<styles>
<style id="scalar" name="Block literal" map-to="def:string"/>
<style id="comment" name="Comment" map-to="def:comment"/>
<style id="string" name="String" map-to="def:string"/>
<style id="escape-sequence"
name="Escape sequence" map-to="def:special-char"/>
<style id="anchor" name="Anchor" map-to="def:identifier"/>
<style id="tag" name="Tag" map-to="def:preprocessor"/>
<style id="alias" name="Alias" map-to="def:type"/>
<style id="map-key" name="Map key" map-to="def:keyword"/>
<style id="directive" name="Directive" map-to="def:shebang"/>
<style id="null" name="Null" map-to="def:special-constant"/>
<style id="bool" name="Boolean" map-to="def:boolean"/>
<style id="int" name="Integer" map-to="def:decimal"/>
<style id="float" name="Floating point" map-to="def:floating-point"/>
</styles>
<definitions>
<define-regex id="ischar">[^-\?:,\[\]\{\}#&*!|>'"%@\s]</define-regex>
<define-regex id="lschar">[\s\[\{,]</define-regex>
<define-regex id="rschar">[\s\]\},]</define-regex>
<context id="scalar" class-disabled="no-spell-check">
<start extended="true">
(?<= ^ | \s)
[|>] # block scalar indicator
(?: [-+]?[0-9]? | [0-9]?[-+]?) # optional indentation and chomping indicators
(?: \s+ (\#.*)?)? # optional whitespace and comment
$
</start>
<include>
<context sub-pattern="1" where="start" style-ref="comment"/>
<context end-parent="true" style-ref="scalar">
<start>^(?'indent'\s+)</start>
<end>^(?!\%{indent@start})</end>
</context>
<context end-parent="true">
<match>(?=.)</match>
</context>
</include>
</context>
<context id="alias" style-ref="alias">
<match>(?<=^|\s)\*\%{ischar}+(?=$|\s)</match>
</context>
<context id="tag" style-ref="tag">
<match>(?<=^|\s)!(?:\%{ischar}*)?!?\%{ischar}+(?=$|\s)</match>
</context>
<context id="anchor" style-ref="anchor">
<match>(?<=^|\s)&\%{ischar}+(?=$|\s)</match>
</context>
<context id="double-quoted-string" style-ref="string" class-disabled="no-spell-check">
<start>(?<=^|\%{lschar})"</start>
<end>"</end>
<include>
<context style-ref="escape-sequence">
<match extended="true">
\\ (?:
[0abt\tnvfre "/\\N_LP] |
x [0-9a-fA-F]{2} |
u [0-9a-fA-F]{4} |
U [0-9a-fA-F]{8} |
$
)
</match>
</context>
</include>
</context>
<context id="single-quoted-string" style-ref="string" class-disabled="no-spell-check">
<start>(?<=^|\%{lschar})'</start>
<end>'</end>
<include>
<context style-ref="escape-sequence">
<match>''</match>
</context>
</include>
</context>
<context id="unquoted-string" end-at-line-end="true" style-ref="string" class-disabled="no-spell-check">
<start>(?=\%{ischar}|[:-\?\]\}]\S)</start>
<end>(?=:\s|:$|\s#)</end>
</context>
<context id="inline-unquoted" end-at-line-end="true" style-ref="string" class-disabled="no-spell-check">
<start>(?=\%{ischar}|-\S)</start>
<end>(?=[:,?\[\{\]\}]|\s#)</end>
</context>
<context id="null" style-ref="null">
<match>(?:null)(?=\s*$|\s+#)</match>
</context>
<context id="inline-null" style-ref="null">
<match>(?:null)(?=\s*[:,?\[\{\]\}]|\s+#)</match>
</context>
<context id="bool" style-ref="bool">
<match>(?:true|false)(?=\s*$|\s+#)</match>
</context>
<context id="inline-bool" style-ref="bool">
<match>(?:true|false)(?=\s*[:,?\[\{\]\}]|\s+#)</match>
</context>
<context id="inline-int" style-ref="int">
<match>-?(?:0|[1-9][0-9]*)(?=\s*[:,?\[\{\]\}]|\s+#)</match>
</context>
<context id="int" style-ref="int">
<match>-?(?:0|[1-9][0-9]*)(?=\s*$|\s+#)</match>
</context>
<context id="inline-float" style-ref="float">
<match>-?(?:0|[1-9][0-9]*)(?:[.][0-9]*)?(?:[eE][-+]?[0-9]+)?(?=\s*[:,?\[\{\]\}]|\s+#)</match>
</context>
<context id="float" style-ref="float">
<match>-?(?:0|[1-9][0-9]*)(?:[.][0-9]*)?(?:[eE][-+]?[0-9]+)?(?=\s*$|\s+#)</match>
</context>
<context id="comment" style-ref="comment">
<match>(?<=^|\s)#.*$</match>
</context>
<context id="inline-sequence">
<start>(?<=^|\s)\[</start>
<include>
<context ref="scalar"/>
<context ref="inline-sequence"/>
<context ref="inline-map"/>
<context ref="comment"/>
<context ref="alias"/>
<context ref="tag"/>
<context ref="anchor"/>
<context ref="single-quoted-string"/>
<context ref="double-quoted-string"/>
<context ref="inline-null"/>
<context ref="inline-bool"/>
<context ref="inline-int"/>
<context ref="inline-float"/>
<context ref="inline-unquoted"/>
<context end-parent="true">
<match>\]</match>
</context>
</include>
</context>
<context id="inline-map">
<start>(?<=^|\s)\{</start>
<include>
<context ref="scalar"/>
<context ref="inline-sequence"/>
<context ref="inline-map"/>
<context ref="comment"/>
<context ref="alias"/>
<context ref="tag"/>
<context ref="anchor"/>
<context ref="single-quoted-string"/>
<context ref="double-quoted-string"/>
<context ref="inline-null"/>
<context ref="inline-bool"/>
<context ref="inline-int"/>
<context ref="inline-float"/>
<context ref="inline-unquoted"/>
<context end-parent="true">
<match>\}</match>
</context>
</include>
</context>
<context id="map">
<!--
The following can cause a stack-overflow in libpcre if the map entry
contains lots of HTTP urls. If you have a better design for this, please
contribute an improvement. Another option might be for GRegex to be
compiled without recurse support, but that doesn't fix things that
are out in the wild already.
To generate the failure case try:
python3 -c 'print("key:", "http://example.com " * 1000)' > testcase.yml
<match>(?<=^|\s)((?:[^:]|:(?=\S))+)(?::\s+|:$)</match>
-->
<match>(?<=^|\s)([^:\s][^:]*)(?::\s+|:$)</match>
<include>
<context sub-pattern="1" style-ref="map-key"/>
</include>
</context>
<context id="sequence">
<match>^\s*-\s+</match>
</context>
<context id="document" style-ref="comment">
<match>^(?:-{3}|[.]{3})(?:\s+|$)</match>
</context>
<context id="directive" style-ref="directive">
<match>^%\%{ischar}(?:\%{ischar}|\s+)*</match>
</context>
<context id="yaml" class="no-spell-check">
<include>
<context ref="directive"/>
<context ref="document"/>
<context ref="scalar"/>
<context ref="sequence"/>
<context ref="inline-sequence"/>
<context ref="inline-map"/>
<context ref="comment"/>
<context ref="null"/>
<context ref="bool"/>
<context ref="int"/>
<context ref="float"/>
<context ref="alias"/>
<context ref="tag"/>
<context ref="anchor"/>
<context ref="single-quoted-string"/>
<context ref="double-quoted-string"/>
<context ref="map"/>
<context ref="unquoted-string"/>
</include>
</context>
</definitions>
</language>
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