<?xml version="1.0" encoding="UTF-8"?>
<!--

This file is part of GtkSourceView

Authors: Marco Barisione, Emanuele Aina
Copyright (C) 2005-2007 Marco Barisione <barisione@gmail.com>
Copyright (C) 2005-2007 Emanuele Aina

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="c" name="C" version="2.0" _section="Source">
    <metadata>
        <property name="mimetypes">text/x-c;text/x-csrc;image/x-xpixmap</property>
        <property name="globs">*.c</property>
        <property name="line-comment-start">//</property>
        <property name="block-comment-start">/*</property>
        <property name="block-comment-end">*/</property>
        <property name="suggested-suffix">.c</property>
    </metadata>

    <styles>
        <style id="comment"                name="Comment"                map-to="def:comment"/>
        <style id="string"                 name="String"                 map-to="def:string"/>
        <style id="preprocessor"           name="Preprocessor"           map-to="def:preprocessor"/>
        <style id="common-defines"         name="Common Defines"         map-to="def:special-constant"/>
        <style id="included-file"          name="Included File"          map-to="def:string"/>
        <style id="included-relative-file" name="Included Relative File" map-to="c:included-file"/>
        <style id="char"                   name="Character"              map-to="def:character"/>
        <style id="keyword"                name="Keyword"                map-to="def:keyword"/>
        <style id="type-keyword"           name="Type Keyword"           map-to="c:keyword"/>
        <style id="operator"               name="Operator"               map-to="def:operator"/>
        <style id="type"                   name="Data Type"              map-to="def:type"/>
        <style id="storage-class"          name="Storage Class"          map-to="def:type"/>
        <style id="printf"                 name="printf Conversion"      map-to="def:special-char"/>
        <style id="escaped-character"      name="Escaped Character"      map-to="def:special-char"/>
        <style id="floating-point"         name="Floating point number"  map-to="def:floating-point"/>
        <style id="decimal"                name="Decimal number"         map-to="def:decimal"/>
        <style id="binary"                 name="Binary number"          map-to="def:base-n-integer"/>
        <style id="octal"                  name="Octal number"           map-to="def:base-n-integer"/>
        <style id="hexadecimal"            name="Hexadecimal number"     map-to="def:base-n-integer"/>
        <style id="boolean"                name="Boolean value"          map-to="def:boolean"/>
        <style id="nullptr"                name="Null Pointer Value"     map-to="def:special-constant"/>
        <style id="standard-stream"        name="Standard stream"        map-to="def:constant"/>
        <style id="signal-name"            name="Signal name"            map-to="def:constant"/>
        <style id="error"                  name="Error"                  map-to="def:error"/>
        <style id="method-calls"           name="Method Calls"           map-to="def:method-calls"/>
    </styles>

    <definitions>
        <context id="method-calls" style-ref="method-calls">
            <match extended="true">
                (\.[\s\n\r]*[\w]+)[\s\n\r]*(?=\(.*\))
            </match>
        </context>

        <!--regexs-->
        <define-regex id="preproc-start">^\s*#\s*</define-regex>
        <define-regex id="escaped-character" extended="true">
            \\(                   # leading backslash
            [\\\"\'nrbtfav\?] |   # escaped character
            [0-7]{1,3} |          # one, two, or three octal digits
            x[0-9A-Fa-f]+ |       # 'x' followed by hex digits
            u[0-9A-Fa-f]{4} |     # 'u' followed by 4 hex digits
            U[0-9A-Fa-f]{8}       # 'U' followed by 8 hex digits
            )
        </define-regex>

        <!--contexts NOT used on the main context-->
        <!-- TODO: what about scanf ? -->
        <!-- man 3 printf -->
        <context id="printf" style-ref="printf" extend-parent="false">
            <match extended="true">
                \%\%|\%
                (?:[1-9][0-9]*\$)?      # argument
                [#0\-\ \+\'I]*          # flags
                (?:[1-9][0-9]*|\*)?     # width
                (?:\.\-?(?:[0-9]+|\*))? # precision
                (?:hh|ll|[hlLqjzt])?    # length modifier
                [diouxXeEfFgGaAcsCSpnm] # conversion specifier
            </match>
        </context>

        <!--contexts used on the main context-->
        <!-- Preprocessor -->
        <context id="if0-comment" style-ref="comment">
            <start>\%{preproc-start}if\b\s*0\b</start>
            <end>\%{preproc-start}(endif|else|elif)\b</end>
            <include>
                <context id="if-in-if0">
                    <start>\%{preproc-start}if(n?def)?\b</start>
                    <end>\%{preproc-start}endif\b</end>
                    <include>
                        <context ref="if-in-if0"/>
                        <context ref="def:in-comment"/>
                    </include>
                </context>
                <context ref="def:in-comment"/>
            </include>
        </context>

        <context id="include" style-ref="preprocessor">
            <match extended="true">
                \%{preproc-start}
                (include|import)\s*
                (&lt;.*?&gt;)
            </match>
            <include>
                <context id="included-file" sub-pattern="2" style-ref="included-file" class="path"/>
            </include>
        </context>

        <context id="include-relative" style-ref="preprocessor">
            <match extended="true">
                \%{preproc-start}
                (include|import)\s*
                (".*?")
            </match>
            <include>
                <context id="included-relative-file" sub-pattern="2" style-ref="included-relative-file" class="path"/>
            </include>
        </context>

        <context id="preprocessor" style-ref="preprocessor" end-at-line-end="true">
            <start extended="true">
                \%{preproc-start}
                (define|undef|error|pragma|ident|if(n?def)?|else|elif(n?def)?|endif|line|warning|embed)
                \b
            </start>
            <include>
                <context ref="def:line-continue" ignore-style="true"/>
                <context ref="string" ignore-style="true"/>
                <context ref="def:c-like-comment"/>
                <context ref="def:c-like-comment-multiline"/>
            </include>
        </context>

        <context id="string" style-ref="string" end-at-line-end="true" class="string" class-disabled="no-spell-check">
            <start>(L|u8|u|U)?"</start>
            <end>"</end>
            <include>
                <context ref="printf"/>
                <context id="escaped-character" style-ref="escaped-character">
                    <match>\%{escaped-character}</match>
                </context>
                <context ref="def:line-continue"/>
            </include>
        </context>

        <context id="char" style-ref="char" class="string">
            <match>(L|u8|u|U)?'(\%{escaped-character}|.)'</match>
        </context>

        <!-- http://www.lysator.liu.se/c/ANSI-C-grammar-l.html -->
        <context id="float" style-ref="floating-point">
            <match extended="true">
                (?&lt;![\w\.])
                ((\.[0-9]+ | [0-9]+\.[0-9]*) ([Ee][+-]?[0-9]+)? |
                ([0-9]+[Ee][+-]?[0-9]+) |
                (0[xX][a-fA-F0-9]*\.?[a-fA-F0-9]*[pP][+-]?[0-9]+))
                [fFlL]?
                (?![\w\.])
            </match>
        </context>

        <context id="hexadecimal" style-ref="hexadecimal">
            <match extended="true">
                (?&lt;![\w\.])
                0[xX][a-fA-F0-9]+[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="invalid-hexadecimal" style-ref="error">
            <match extended="true">
                (?&lt;![\w\.])
                0[xX][a-fA-F0-9]*[g-zG-Z][a-zA-Z0-9]*[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="octal" style-ref="octal">
            <match extended="true">
                (?&lt;![\w\.])
                0[0-7]+[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="invalid-octal" style-ref="error">
            <match extended="true">
                (?&lt;![\w\.])
                0[0-7]*[89][0-9]*[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="binary" style-ref="binary">
            <match extended="true">
                (?&lt;![\w\.])
                0[bB][01]+[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="invalid-binary" style-ref="error">
            <match extended="true">
                (?&lt;![\w\.])
                0[bB][01]*[2-9][a-zA-Z0-9]*[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="decimal" style-ref="decimal">
            <match extended="true">
                (?&lt;![\w\.])
                (0|[1-9][0-9]*)[uUlL]*
                (?![\w\.])
            </match>
        </context>

        <context id="keywords" style-ref="keyword">
            <keyword>asm</keyword>
            <keyword>break</keyword>
            <keyword>case</keyword>
            <keyword>constexpr</keyword>
            <keyword>continue</keyword>
            <keyword>default</keyword>
            <keyword>do</keyword>
            <keyword>else</keyword>
            <keyword>for</keyword>
            <keyword>fortran</keyword>
            <keyword>goto</keyword>
            <keyword>if</keyword>
            <keyword>return</keyword>
            <keyword>switch</keyword>
            <keyword>while</keyword>
        </context>

        <context id="type-keywords" style-ref="type-keyword">
            <keyword>enum</keyword>
            <keyword>struct</keyword>
            <keyword>typedef</keyword>
            <keyword>union</keyword>
        </context>

        <context id="operators" style-ref="operator">
            <keyword>(_A|a)lignof</keyword>
            <keyword>_Generic</keyword>
            <keyword>offsetof</keyword>
            <keyword>(_S|s)tatic_assert</keyword>
            <keyword>sizeof</keyword>
            <keyword>typeof</keyword>
        </context>

        <context id="types" style-ref="type">
            <keyword>(_B|b)ool</keyword>
            <keyword>_Complex</keyword>
            <keyword>_Imaginary</keyword>
            <keyword>char</keyword>
            <keyword>double</keyword>
            <keyword>float</keyword>
            <keyword>int</keyword>
            <keyword>long</keyword>
            <keyword>short</keyword>
            <keyword>signed</keyword>
            <keyword>unsigned</keyword>
            <keyword>void</keyword>
            <keyword>[a-z_][0-9a-z_]+(_t|_T)</keyword>
        </context>

        <context id="storage-class" style-ref="storage-class">
            <keyword>(_A|a)lignas</keyword>
            <keyword>_Atomic</keyword>
            <keyword>(_N|n)oreturn</keyword>
            <keyword>(_T|t)hread_local</keyword>
            <keyword>auto</keyword>
            <keyword>const</keyword>
            <keyword>extern</keyword>
            <keyword>inline</keyword>
            <keyword>register</keyword>
            <keyword>restrict</keyword>
            <keyword>static</keyword>
            <keyword>volatile</keyword>
        </context>

        <!-- C99 booleans -->
        <context id="boolean" style-ref="boolean">
            <keyword>true</keyword>
            <keyword>false</keyword>
        </context>

        <context id="nullptr" style-ref="nullptr">
            <keyword>nullptr</keyword>
        </context>

        <context id="common-defines" style-ref="common-defines">
            <keyword>NULL</keyword>
            <keyword>MAX</keyword>
            <keyword>MIN</keyword>
            <keyword>TRUE</keyword>
            <keyword>FALSE</keyword>
            <keyword>__LINE__</keyword>
            <keyword>__DATE__</keyword>
            <keyword>__FILE__</keyword>
            <keyword>__func__</keyword>
            <keyword>__TIME__</keyword>
            <keyword>__STDC__</keyword>
        </context>

        <context id="standard-streams" style-ref="standard-stream">
            <keyword>stdin</keyword>
            <keyword>stdout</keyword>
            <keyword>stderr</keyword>
        </context>

        <context id="signals" style-ref="signal-name">
            <keyword>SIGABRT</keyword>
            <keyword>SIGALRM</keyword>
            <keyword>SIGCHLD</keyword>
            <keyword>SIGCONT</keyword>
            <keyword>SIGFPE</keyword>
            <keyword>SIGHUP</keyword>
            <keyword>SIGILL</keyword>
            <keyword>SIGINT</keyword>
            <keyword>SIGKILL</keyword>
            <keyword>SIGPIPE</keyword>
            <keyword>SIGQUIT</keyword>
            <keyword>SIGSEGV</keyword>
            <keyword>SIGSTOP</keyword>
            <keyword>SIGTERM</keyword>
            <keyword>SIGTRAP</keyword>
            <keyword>SIGTSTP</keyword>
            <keyword>SIGTTIN</keyword>
            <keyword>SIGTTOU</keyword>
            <keyword>SIGUSR1</keyword>
            <keyword>SIGUSR2</keyword>
        </context>

        <!--Main context-->
        <context id="c" class="no-spell-check">
            <include>
                <context ref="method-calls"/>
                <context ref="gtk-doc:inline-docs-section"/>
                <context ref="def:c-like-comment" style-ref="comment"/>
                <context ref="def:c-like-comment-multiline" style-ref="comment"/>
                <context ref="def:c-like-close-comment-outside-comment" style-ref="comment"/>
                <context ref="if0-comment"/>
                <context ref="include"/>
                <context ref="include-relative"/>
                <context ref="preprocessor"/>
                <context ref="string"/>
                <context ref="char"/>
                <context ref="float"/>
                <context ref="hexadecimal"/>
                <context ref="invalid-hexadecimal"/>
                <context ref="octal"/>
                <context ref="invalid-octal"/>
                <context ref="binary"/>
                <context ref="invalid-binary"/>
                <context ref="decimal"/>
                <context ref="keywords"/>
                <context ref="type-keywords"/>
                <context ref="operators"/>
                <context ref="types"/>
                <context ref="storage-class"/>
                <context ref="boolean"/>
                <context ref="nullptr"/>
                <context ref="common-defines"/>
                <context ref="standard-streams"/>
                <context ref="signals"/>
            </include>
        </context>

    </definitions>
</language>
