87 lines
1.7 KiB
Text
87 lines
1.7 KiB
Text
# This is a Tatsu file.
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# Syntax is explained at
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# https://tatsu.readthedocs.io/en/stable/syntax.html
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@@grammar :: Hlds
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# Don't ignore any whitespace
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@@whitespace :: //
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@@eol_comments :: /[ \t]*#.*?$/
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@@keyword :: single_choice multi_choice base preset only requires except
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start = [n] { @:location } $ ;
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location_header =
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/={3,}\n/ ~
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id:identifier ':' s name:string
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attributes:{ location_attribute }
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/\n={3,}\n+/
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;
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location_attribute =
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n '\t' key:identifier ' ' value:string
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;
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location = >location_header items:{ block } ;
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attributes =
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name:/[^\n]*?(?= +-- | +:: | +€ |\n)/
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[ s '--' ~ s description:/[^\n]*?(?= +:: | +€ |\n)/ ]
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[ s '::' {s ('{' tags+:identifier '}')} ]
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[ [ s '::' ~ ] s price:price ]
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;
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block =
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| base_block
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| choice_block
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;
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base_block =
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kind:'base' s ~
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id:identifier ':' s >attributes
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n
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choices:{ indent_choice_block }
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;
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choice_entry = id:identifier ':' s >attributes ;
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noindent_choice_entry = n '\t' >choice_entry ;
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indent_choice_entry = n '\t\t' >choice_entry ;
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# Toplevel choice definitions
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choice_block =
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kind:`choice_declaration`
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id:identifier ':' s >attributes entries:{ noindent_choice_entry }
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n
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;
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# Appears in a base block. One of:
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# 1) reference to toplevel choice definition
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# 2) inline choice declaration (as opposed to globally declared and referenced)
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indent_choice_block =
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'\t' type:choice_type s
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(
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| kind:`reference` id:identifier [ s price:price ]
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| kind:`declaration` id:identifier ':' ~ s >attributes entries:{ indent_choice_entry }
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)
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n
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;
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s = / +/ ;
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n = '\n' {{'\t'} '\n'} ;
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@name
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identifier = /[a-z0-9_-]+/ ;
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string = /[^\n]+/ ;
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choice_type = 'single_choice' | 'multi_choice' ;
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number = /[0-9]+(\.[0-9]+)?/ ;
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currency = '€' ;
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price = currency:currency s value:number ;
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