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

 This file is part of GtkSourceView

 Authors: Jsoftware, Ric Sherlock
 Copyright (C) 2011 Ric Sherlock <tikkanz@gmail.com>

 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="j" name="J" version="2.0" _section="Source">
  <metadata>
    <property name="globs">*.ijs</property>
    <property name="line-comment-start">NB\.</property>
  </metadata>

  <styles>
    <style id="adverb" name="Adverb" map-to="def:identifier" />
    <style id="comment" name="Comment" map-to="def:comment" />
    <style id="conjunction" name="Conjunction" map-to="def:identifier" />
    <style id="control" name="Control" map-to="def:keyword" />
    <style id="error" name="Error" map-to="def:error" />
    <style id="exparg" name="Explicit Argument" map-to="def:special-char" />
    <style id="global" name="Global" map-to="def:type" />
    <style id="labtext" name="Lab Text" map-to="def:preprocessor" />
    <style id="local" name="Local" map-to="def:type" />
    <style id="noun" name="Noun" map-to="def:special-constant" />
    <style id="noundef" name="Explicit Noun Definition" map-to="def:string" />
    <style id="number" name="Number" map-to="def:decimal" />
    <style id="parens" name="Parens" map-to="def:statement" />
    <style id="primitive" name="Primitive" map-to="def:identifier" />
    <style id="string" name="String" map-to="def:string" />
    <style id="verb"  name="Verb" map-to="def:identifier" />
  </styles>

  <definitions>
    <!-- Problems/shortcomings
    * How to target parens inside expdef
    * Matched vs unmatched parens coloring but how to do () and not {} and []
    -->

    <!-- NB. (Comments) -->
    <context id="comment" style-ref="comment" end-at-line-end="true">
      <start>\%[NB\.</start>
    </context>

    <!-- 'abcde' (Strings) -->
    <context id="string" style-ref="string" end-at-line-end="true">
      <start>L?'</start><end>'</end>
    </context>

    <!-- Unbalanced single quotes -->
    <context id="error" style-ref="error">
      <match>'[^']*?$</match>
    </context>

    <!-- 2.34 (Numbers) -->
    <context id="number" style-ref="number">
      <match extended="true">\%[[_0-9][_0-9\.a-zA-Z]*\%]</match>
    </context>

    <!-- Nouns -->
    <context id="noun" style-ref="noun">
      <match extended="true">
        \%[(_\.|a\.|a:)(?![\.\:])
      </match>
    </context>

    <!-- Verbs -->
    <context id="verb" style-ref="verb">
      <match extended="true">
        ((_?[0-9]:)|
        (\%[p\.\.)|
        (\%[[AcCeEiIjLopr]\.)|
        (\%[[ipqsux]:)|
        ({::)|
        ([&lt;&gt;\+\*\-\%\^\$\~\|\,\#\{\}&quot;\?]\.)|
        ([&lt;&gt;\_\+\*\-\%\$\~\|\,\;\#\/\\\[\{\}&quot;]:)|
        ([&lt;&gt;\=\+\*\-\%\^\$\|\,\;\#\!\[\]\{\?]))
        (?![\.\:])
      </match>
    </context>

    <!-- Adverbs -->
    <context id="adverb" style-ref="adverb">
      <match extended="true">
        (([\/\\]\.)|
        (\%[[bfMt]\.)|
        (\%[t:)|
        ([\~\/\\\}]))
        (?![\.\:])
      </match>
    </context>

    <!-- Conjunctions -->
    <context id="conjunction" style-ref="conjunction">
      <match extended="true">
        ((\%[[dDHT]\.)|
        (\%[[DLS]:)|
        (&amp;\.:)|
        ([\;\!\@&amp;]\.)|
        ([\^\!\`\@&amp;]:)|
        ([\"\`\@&amp;])|
        (\s[\.\:][\.\:])|
        (\s[\.\:]))
        (?![\.\:])
      </match>
    </context>

    <!-- () (Parentheses) -->
    <context id="parens" style-ref="parens">
      <match>[\(\)]</match>
    </context>

    <!-- Explicit arguments -->
    <context id="exparg" style-ref="exparg">
      <match extended="true">\%[[nmuvxy](?![\w\.\:])</match>
    </context>

    <define-regex id="valid-name">[a-zA-Z][a-zA-Z0-9_]*</define-regex>
    <define-regex id="close-expdef">^\s*\)\s*$</define-regex>

    <!-- if. do. end. (Control words) -->
    <context id="control" style-ref="control">
      <prefix>\%[</prefix>
      <suffix>(?![\.\:])</suffix>
      <keyword>assert\.</keyword>
      <keyword>break\.</keyword>
      <keyword>continue\.</keyword>
      <keyword>return\.</keyword>
      <keyword>do\.</keyword>
      <keyword>if\.</keyword>
      <keyword>else\.</keyword>
      <keyword>elseif\.</keyword>
      <keyword>end\.</keyword>
      <keyword>for\.</keyword>
      <keyword>select\.</keyword>
      <keyword>case\.</keyword>
      <keyword>fcase\.</keyword>
      <keyword>throw\.</keyword>
      <keyword>try\.</keyword>
      <keyword>catch\.</keyword>
      <keyword>catchd\.</keyword>
      <keyword>catcht\.</keyword>
      <keyword>while\.</keyword>
      <keyword>whilst\.</keyword>
      <keyword>for_\%{valid-name}?\.</keyword>
      <keyword>goto_\%{valid-name}?\.</keyword>
      <keyword>label_\%{valid-name}?\.</keyword>
    </context>

    <!-- Explicit definition -->
    <context id="expdef" style-inside="true">
      <start>\%[(([1-4]|13)\s+:\s*0)|((adverb|conjunction|verb|monad|dyad)\s+define)\%]</start>
      <end>\%{close-expdef}</end>
      <include>
        <context ref="comment"/>
        <context ref="error"/>
        <context ref="exparg"/>
        <context ref="global"/>
        <context ref="local"/>
        <context ref="noun"/>
        <context ref="verb"/>
        <context ref="adverb"/>
        <context ref="conjunction"/>
        <context ref="string"/>
        <context ref="number"/>
        <context ref="control"/>
      </include>
    </context>

    <!-- Explicit noun definition -->
    <context id="noundef" style-ref="noundef" style-inside="true">
      <start>\%[(0\s+:\s*0|noun\s+define)\%].*$</start>
      <end>\%{close-expdef}</end>
    </context>

    <!-- Lab text definition -->
    <context id="labtext" style-ref="labtext">
      <start>^\s*[\x{2500}|-]{2,}</start>
      <end>\%{close-expdef}</end>
    </context>

    <!-- Note (Multiline comment) -->
    <context id="notes" style-ref="comment" style-inside="true">
      <start>^\s*\%[Note\%](?!\s*\=[:.])\s*['\d].*$</start>
      <end>\%{close-expdef}</end>
    </context>

    <!-- Note (to end-of-line comment) -->
    <context id="note" style-ref="comment" end-at-line-end="true">
      <start>\%[Note\%](?!\s*\=[:.])\s*['\d].*$</start>
    </context>

    <!-- =: (Global assignment) -->
    <context id="global" style-ref="global">
      <match>=:</match>
    </context>

    <!-- =. (Local assignment) -->
    <context id="local" style-ref="local">
      <match>=\.</match>
    </context>

    <context id="j">
      <include>
        <context ref="comment"/>
        <context ref="error"/>
        <context ref="string"/>
        <context ref="global"/>
        <context ref="local"/>
        <context ref="noun"/>
        <context ref="verb"/>
        <context ref="adverb"/>
        <context ref="conjunction"/>
        <context ref="expdef"/>
        <context ref="noundef"/>
        <context ref="labtext"/>
        <context ref="notes"/>
        <context ref="note"/>
        <context ref="parens"/>
        <context ref="number"/>
      </include>
    </context>

  </definitions>
</language>
