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[gtksourceview] gradle.lang: add language file

commit d7a9c4617808f3b47f16d8fdf051a7f1142a5441
Author: Alberto Fanjul <albertofanjul gmail com>
Date:   Mon Jun 18 20:47:43 2018 +0200

    gradle.lang: add language file

 data/language-specs/Makefile.am |   1 +
 data/language-specs/gradle.lang | 333 ++++++++++++++++++++++++++++++++++++++++
 po/POTFILES.skip                |   1 +
 3 files changed, 335 insertions(+)
---
diff --git a/data/language-specs/Makefile.am b/data/language-specs/Makefile.am
index 6428f830..05713e97 100644
--- a/data/language-specs/Makefile.am
+++ b/data/language-specs/Makefile.am
@@ -45,6 +45,7 @@ LANGUAGES =                   \
        genie.lang              \
        glsl.lang               \
        go.lang                 \
+       gradle.lang             \
        groovy.lang             \
        gtk-doc.lang            \
        gtkrc.lang              \
diff --git a/data/language-specs/gradle.lang b/data/language-specs/gradle.lang
new file mode 100644
index 00000000..37ce9b97
--- /dev/null
+++ b/data/language-specs/gradle.lang
@@ -0,0 +1,333 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ gradle.lang basic syntax highlighting of gradle config files for GtkSourceView
+
+ Copyright (C) 2018 Alberto Fanjul <albfan gnome org>
+
+ GtkSourceView 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.
+
+ GtkSourceView 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="gradle" name="Gradle" version="2.0" _section="Source">
+  <metadata>
+    <property name="globs">build.gradle</property>
+    <property name="line-comment-start">//</property>
+    <property name="block-comment-start">/*</property>
+    <property name="block-comment-end">*/</property>
+  </metadata>
+
+  <styles>
+    <style id="comment"           name="Comment"                   map-to="def:comment"/>
+    <style id="escaped-character" name="Escaped Character"         map-to="def:special-char"/>
+    <style id="interpolation"     name="Interpolation Syntax"      map-to="def:special-char"/>
+    <style id="interpolated"      name="Interpolated Expression"   map-to="def:identifier"/>
+    <style id="string"            name="String"                    map-to="def:string"/>
+    <style id="external"          name="External"                  map-to="def:preprocessor"/>
+    <style id="declaration"       name="Declaration"               map-to="def:type"/>
+    <style id="storage-class"     name="Storage Class"             map-to="def:type"/>
+    <style id="scope-declaration" name="Scope Declaration"         map-to="def:type"/>
+    <style id="operator"          name="Operator"                  map-to="def:operator"/>
+    <style id="keyword"           name="Keyword"                   map-to="def:keyword"/>
+    <style id="null-value"        name="Null Value"                map-to="def:special-constant"/>
+    <style id="boolean"           name="Boolean value"             map-to="def:boolean"/>
+    <style id="number"            name="Number"                    map-to="def:number"/>
+    <style id="type"              name="Data Type"                 map-to="def:type"/>
+  </styles>
+
+  <definitions>
+    <define-regex id="escaped-character" extended="true">
+      \\(
+        # character escape
+        [nrtbf"'\\$] |
+        # unicode escape
+        u[0-9A-Fa-f]{4} |
+        # octal escape
+        [0-3] ([0-7] [0-7]?)? | [4-7] [0-7]?
+      )
+    </define-regex>
+
+    <define-regex id="letter" extended="true">
+      [a-zA-Z\x{c0}-\x{d6}\x{d8}-\x{f6}\x{f8}-\x{ff}\x{100}-\x{fffe}_]
+    </define-regex>
+
+    <context id="escaped-character">
+      <include>
+        <context style-ref="escaped-character">
+          <match>\%{escaped-character}</match>
+        </context>
+        <context ref="def:line-continue"/>
+        <context style-ref="def:error">
+          <!-- backslashes not part of a valid escape sequence are erroneous -->
+          <match>\\</match>
+        </context>
+      </include>
+    </context>
+
+    <context id="placeholder">
+      <include>
+        <context style-ref="interpolated">
+          <match extended="true">
+            (\$)
+            # one or more dollarless identifiers separated by dots
+            \%{letter} (\%{letter} | \d)*
+            (\. \%{letter} (\%{letter} | \d)*)*
+          </match>
+          <include>
+            <context sub-pattern="1" style-ref="interpolation"/>
+          </include>
+        </context>
+        <context style-ref="interpolated">
+          <start>\$\{</start>
+          <end>\}</end>
+          <include>
+            <context sub-pattern="0" where="start" style-ref="interpolation"/>
+            <context sub-pattern="0" where="end" style-ref="interpolation"/>
+            <context ref="gradle"/>
+          </include>
+        </context>
+      </include>
+    </context>
+
+    <!-- a dollar that isn't part of a placeholder is erroneous in some instances -->
+    <context id="bad-placeholder" style-ref="def:error">
+      <match>\$</match>
+    </context>
+
+    <context id="triple-single-quoted-string" style-ref="string" class="string" 
class-disabled="no-spell-check">
+      <start>'''</start>
+      <end>'''</end>
+      <include>
+        <context ref="escaped-character"/>
+      </include>
+    </context>
+
+    <context id="single-quoted-string" end-at-line-end="true" style-ref="string" class="string" 
class-disabled="no-spell-check">
+      <start>'</start>
+      <end>'</end>
+      <include>
+        <context ref="escaped-character"/>
+      </include>
+    </context>
+
+    <context id="triple-double-quoted-string" style-ref="string" class="string" 
class-disabled="no-spell-check">
+      <start>"""</start>
+      <end>"""</end>
+      <include>
+        <context ref="escaped-character"/>
+        <context ref="placeholder"/>
+        <context ref="bad-placeholder"/>
+      </include>
+    </context>
+
+    <context id="double-quoted-string" end-at-line-end="true" style-ref="string" class="string" 
class-disabled="no-spell-check">
+      <start>"</start>
+      <end>"</end>
+      <include>
+        <context ref="escaped-character"/>
+        <context ref="placeholder"/>
+        <context ref="bad-placeholder"/>
+      </include>
+    </context>
+
+    <context id="slashy-string" style-ref="string" class="string">
+      <start extended="true">
+        # The initial slash must not be preceded by a token that can end an expression.
+        # Otherwise, it's interpreted as a division operator, not the start of a slashy string.
+        # It'd be complicated to verify whole tokens with a regex, but the last non-space
+        # character is a good indicator by itself. We can use a negative lookbehind assertion
+        # to verify that it's not a character that an expression-ending token can end with.
+
+        # Trouble is, a lookbehind assertion has to consist of fixed-length alternatives, so
+        # we can't have it match an arbitrary amount of whitespace. Thus, we do an approximate
+        # check, only trying zero and one spaces.
+
+        (?&lt;! \+\+   | --   | [])}"\d]   | \%{letter} |
+                \+\+\s | --\s | [])}"\d]\s | \%{letter}\s )
+
+        /
+      </start>
+      <end>/</end>
+      <include>
+        <context style-ref="escaped-character">
+          <match>\\/</match>
+        </context>
+        <context ref="def:line-continue"/>
+        <context ref="placeholder"/>
+        <!-- standalone dollars and backslashes are interpreted literally -->
+      </include>
+    </context>
+
+    <context id="dollar-slashy-string" style-ref="string" class="string">
+      <start extended="true">
+        \$/
+
+        # Dollar slashy strings can't be empty (a would-be empty one is parsed
+        # as a dollar followed by a single-line comment instead).
+        (?! /\$)
+      </start>
+      <end>/\$</end>
+      <include>
+        <context style-ref="escaped-character">
+          <match>\$[$/]</match>
+        </context>
+        <context ref="def:line-continue"/>
+        <context ref="placeholder"/>
+      </include>
+    </context>
+
+    <context id="numeric" style-ref="number">
+      <match extended="true">
+        \b (
+          # floating-point
+          \d ([\d_]* \d)? (
+            \. \d ([\d_]* \d)? ([eE] [+-]? [\d_]* \d)? [dDfFgG]? |
+            [eE] [+-]? [\d_]* \d [dDfFgG]? |
+            [dDfF]
+          ) |
+          # integer
+          (
+            0 | # decimal zero
+            0[bB] [01] ([01_]* [01])? | # binary
+            0 [0-7] ([0-7_]* [0-7])? | # octal
+            [1-9] ([\d_]* \d)? | # decimal
+            0[xX] [\da-fA-F] ([\da-fA-F_]* [\da-fA-F])? # hexadecimal
+          ) [iIlLgG]?
+        ) \b
+      </match>
+    </context>
+
+    <!--
+      Some of the Java keywords are reserved in Groovy. We don't mark them
+      with a special style, though, because in some instances keywords can
+      be used as identifiers (e.g. when used as a member name), and even
+      reserved keywords are valid when used like that.
+    -->
+
+    <context id="externals" style-ref="external">
+      <keyword>import</keyword>
+      <keyword>package</keyword>
+    </context>
+
+    <context id="declarations" style-ref="declaration">
+      <keyword>class</keyword>
+      <keyword>enum</keyword>
+      <keyword>extends</keyword>
+      <keyword>implements</keyword>
+      <keyword>interface</keyword>
+      <keyword>native</keyword>
+      <keyword>throws</keyword>
+      <keyword>trait</keyword>
+      <keyword>apply</keyword>
+      <keyword>plugin</keyword>
+      <keyword>compile</keyword>
+      <keyword>testCompile</keyword>
+      <keyword>dependencies</keyword>
+      <keyword>repositories</keyword>
+    </context>
+
+    <context id="primitive-types" style-ref="type">
+      <keyword>boolean</keyword>
+      <keyword>byte</keyword>
+      <keyword>char</keyword>
+      <keyword>def</keyword>
+      <keyword>double</keyword>
+      <keyword>float</keyword>
+      <keyword>int</keyword>
+      <keyword>long</keyword>
+      <keyword>short</keyword>
+      <keyword>void</keyword>
+    </context>
+
+    <context id="storage-class" style-ref="storage-class">
+      <keyword>abstract</keyword>
+      <keyword>const</keyword>
+      <keyword>final</keyword>
+      <keyword>static</keyword>
+      <keyword>strictfp</keyword>
+      <keyword>synchronized</keyword>
+      <keyword>transient</keyword>
+      <keyword>volatile</keyword>
+    </context>
+
+    <context id="scope-declarations" style-ref="scope-declaration">
+      <keyword>private</keyword>
+      <keyword>protected</keyword>
+      <keyword>public</keyword>
+    </context>
+
+    <context id="flow" style-ref="keyword">
+      <keyword>assert</keyword>
+      <keyword>break</keyword>
+      <keyword>case</keyword>
+      <keyword>catch</keyword>
+      <keyword>continue</keyword>
+      <keyword>default</keyword>
+      <keyword>do</keyword>
+      <keyword>else</keyword>
+      <keyword>finally</keyword>
+      <keyword>for</keyword>
+      <keyword>goto</keyword>
+      <keyword>if</keyword>
+      <keyword>return</keyword>
+      <keyword>throw</keyword>
+      <keyword>switch</keyword>
+      <keyword>try</keyword>
+      <keyword>while</keyword>
+    </context>
+
+    <context id="operator" style-ref="operator">
+      <keyword>as</keyword>
+      <keyword>in</keyword>
+      <keyword>instanceof</keyword>
+      <keyword>new</keyword>
+      <keyword>super</keyword>
+      <keyword>this</keyword>
+    </context>
+
+    <context id="null-value" style-ref="null-value">
+      <keyword>null</keyword>
+    </context>
+
+    <context id="boolean" style-ref="boolean">
+      <keyword>false</keyword>
+      <keyword>true</keyword>
+    </context>
+
+    <context id="gradle" class="no-spell-check">
+      <include>
+        <context ref="def:shebang" style-ref="comment"/>
+        <context ref="def:c-like-comment" style-ref="comment"/>
+        <context ref="def:c-like-comment-multiline" style-ref="comment"/>
+        <context ref="def:line-continue"/>
+
+        <context ref="triple-single-quoted-string"/>
+        <context ref="single-quoted-string"/>
+        <context ref="triple-double-quoted-string"/>
+        <context ref="double-quoted-string"/>
+        <context ref="slashy-string"/>
+        <context ref="dollar-slashy-string"/>
+        <context ref="numeric"/>
+
+        <context ref="externals"/>
+        <context ref="declarations"/>
+        <context ref="primitive-types"/>
+        <context ref="storage-class"/>
+        <context ref="scope-declarations"/>
+        <context ref="flow"/>
+        <context ref="operator"/>
+        <context ref="null-value"/>
+        <context ref="boolean"/>
+      </include>
+    </context>
+  </definitions>
+</language>
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index e584dfdc..e6175257 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -48,6 +48,7 @@ data/language-specs/gdb-log.lang
 data/language-specs/genie.lang
 data/language-specs/glsl.lang
 data/language-specs/go.lang
+data/language-specs/gradle.lang
 data/language-specs/groovy.lang
 data/language-specs/gtk-doc.lang
 data/language-specs/gtkrc.lang
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