This file is part of GtkSourceView

 Copyright (C) 2003 Gustavo Giráldez <gustavo.giraldez@gmx.net>

 Copyright (C) 2006 Jeff Walden <jwalden@mit.edu>

 Copyright (C) 2017 Roman Donchenko

 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="groovy" name="Groovy" version="2.0" _section="Source">

  <metadata>

    <property name="globs">*.groovy</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">

          <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="groovy"/>

          </include>

        </context>

      </include>

    </context>

    <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.

        (?<! \+\+   | --   | [])}"\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"/>

      </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>

    </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="groovy" 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>