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grammar HelpGrammar
rule line
spaces sws:switches* text [\n]* {
def to_tex(opened)
res = ""
unless sws.empty?
if !opened.is_open
res << "\\begin{description}\n"
opened.is_open = true
end
res << "\\item["
res << sws.elements.map { |s| s.to_tex }.join(",")
res << "] "
end
res << "\\noindent " unless text.text_value.empty?
res << quote(text.text_value)
end
}
end
rule spaces
[\s]*
end
rule switches
"-" sw:( short_switch / long_switch ) {
def to_tex
sw.to_tex
end
}
end
rule short_switch
name:[a-zA-Z] ","? spaces {
def to_tex
"\\Opt{-#{name.text_value}}"
end
}
end
rule long_switch
"-" name:[^,\s=]+ val:("=" [^,\s]+)? ","? spaces {
def to_tex
val.empty? ? "\\LOpt{#{quote(name.text_value)}}" : "\\LOptArg{#{quote(name.text_value)}}{#{quote(val.text_value)}}"
end
}
end
rule text
[^\n]*
end
end
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