schachmatt 0.3.0

A chess library
Documentation 
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metadata = { "[" ~ metadata_key ~ " \"" ~ metadata_value ~ "\"]" }
metadata_key = { ('a'..'z' | 'A'..'Z')+ }
metadata_value = { (!"\"" ~ ANY)* }

turn_data = { game_result | (single_move_entry ~ two_move_entry* ~ game_result{, 1}) | two_move_entry* ~ game_result{, 1} }

two_move_entry = { (double_turn_indicator ~ turn_move ~ game_result) | (double_turn_indicator ~ turn_move ~ turn_move) }
double_turn_indicator = { turn_filler* ~ ( '0'..'9' )+ ~ "." ~ turn_filler* }

single_move_entry = { single_turn_indicator ~ turn_move }
single_turn_indicator = { turn_filler* ~ ( '0'..'9' )+ ~ ".." ~ turn_filler* }

turn_move = { turn_filler* ~ san_move ~ turn_filler* }
san_move = { ( 'a'..'z' | 'A'..'Z' | '0'..'9' | "=" | "#" | "+" | "-" )+ }

turn_filler = { (alternative | comment | annotation_glyphs | " ")  }
alternative = { "(" ~ (!"}" ~ ANY)+ ~ ")" }
comment = { "{" ~ (!"}" ~ ANY)+ ~ "}" }
game_result = { "1-0" | "0-1" | "1/2-1/2" | "*" }
annotation_glyphs = { "$" ~ ( '0'..'9' )+ }