%grammar drinkup
%version 0.0.1

recipe:
    cocktail
    description
    ingredients
    instructions?
    footers

cocktail: /
    (: ~ <EOL> )?   # Leading whitespace?
    (<NS> <ANY>*?)  # Cocktail name. Capture it.
    ~ <EOL>         # Trailing whitespace
/

description: /
    (<ALL>*?)       # Description text
    <EOL>+
    (= <BLANK>* <STAR> ) # Not the ingredients
/

# Ingredient parts
ingredients: ingredient+

ingredient:
    / <SPACE>* <STAR> <SPACE>* /
    number
    / <SPACE>* /
    unit
    / <SPACE>* /
    name
    / <SPACE>* <EOL> /
    note?

# probably need to attempt to parse 1 1/2 or 1 + 1/2
# cribbed from json-pgx, minus the exponent version because if you use that
# in a recipe you should change your units!
number: /(
   (: 0 | [1-9] <DIGIT>* )?
   (: <DOT> <DIGIT>+ )?
   (: ~ <PLUS>? ~ <DIGIT>+ ~ <SLASH> ~ <DIGIT>+ )?
)/

ounce: /(?i:ounces? | oz)/

tablespoon: /(?i:tbsp|tablespoons?|(?-i:T\s))/

teaspoon: /(?i:tsp|teaspoons?|(?-i:t\s))/

dash: /(?i:dash(:es)?)/

unit:   (<ounce>|<tablespoon>|<teaspoon>|<dash>)/(?i: ~ of)?/

name:   / (<ANY>+?) ~ (= <EOL>) /

note:   / <HASH> <SPACE>* (<ANY>+?) <SPACE>* <EOL> /

instructions: /
   (<ALL>*?)         # instruction text
   (= <EOL> <footer_name> <COLON> ) # Not the footers
   ~
/

footers: metadata+

metadata: / (<footer_name>) <COLON> <SPACE>* (<ANY>+?) ~ <EOL> /

footer_name: / [<WORDS>-]+ /