/
grammar.bgf
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/
grammar.bgf
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<?xml version="1.0" encoding="UTF-8"?>
<xns1:grammar xmlns:xns1="http://planet-sl.org/bgf">
<root>program</root>
<xns1:production>
<nonterminal>program</nonterminal>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>line</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>line</nonterminal>
<xns1:expression>
<sequence>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>tab_space</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>linetoken</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<optional>
<xns1:expression>
<nonterminal>indent</nonterminal>
</xns1:expression>
</optional>
</xns1:expression>
<xns1:expression>
<plus>
<xns1:expression>
<nonterminal>endofline</nonterminal>
</xns1:expression>
</plus>
</xns1:expression>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>dedent</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
</sequence>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>endofline</nonterminal>
<xns1:expression>
<sequence>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>tab_space</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<optional>
<xns1:expression>
<nonterminal>comment</nonterminal>
</xns1:expression>
</optional>
</xns1:expression>
<xns1:expression>
<nonterminal>newline</nonterminal>
</xns1:expression>
</sequence>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>indent</nonterminal>
<xns1:expression>
<sequence>
<xns1:expression>
<nonterminal>SP</nonterminal>
</xns1:expression>
<xns1:expression>
<terminal>INDENT</terminal>
</xns1:expression>
</sequence>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>dedent</nonterminal>
<xns1:expression>
<sequence>
<xns1:expression>
<terminal>DEDENT</terminal>
</xns1:expression>
<xns1:expression>
<nonterminal>SP</nonterminal>
</xns1:expression>
</sequence>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>tab_space</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>tab</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>space</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>linetoken</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>tab_space</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>nonblank_token</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>nonblank_token</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>compound</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>token</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>compound</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<sequence>
<xns1:expression>
<terminal>{</terminal>
</xns1:expression>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>compoundtoken</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<terminal>}</terminal>
</xns1:expression>
</sequence>
</xns1:expression>
<xns1:expression>
<sequence>
<xns1:expression>
<terminal>[</terminal>
</xns1:expression>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>compoundtokensquare</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<terminal>]</terminal>
</xns1:expression>
</sequence>
</xns1:expression>
<xns1:expression>
<sequence>
<xns1:expression>
<terminal>(</terminal>
</xns1:expression>
<xns1:expression>
<star>
<xns1:expression>
<nonterminal>compoundtokenround</nonterminal>
</xns1:expression>
</star>
</xns1:expression>
<xns1:expression>
<terminal>)</terminal>
</xns1:expression>
</sequence>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>compoundtoken</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>linetoken</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>newline</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>comment</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>compoundtokensquare</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>linetoken</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>newline</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>comment</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
<xns1:production>
<nonterminal>compoundtokenround</nonterminal>
<xns1:expression>
<choice>
<xns1:expression>
<nonterminal>linetoken</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>newline</nonterminal>
</xns1:expression>
<xns1:expression>
<nonterminal>comment</nonterminal>
</xns1:expression>
</choice>
</xns1:expression>
</xns1:production>
</xns1:grammar>