Config          = Doc .
Doc             = Stmt { Stmt } .
Stmt            = Word (Assignment | Command) .

# Statements
Assignment      = "=" Values br .
Command         = [Values] ( Body | br ) .

# Value types
Values          = Value {Value} .
Value           = Word | String | Number | Boolean .
Body            = lbrace [ Doc ] rbrace .

# Atoms
Word            = word .
Number          = number .
Boolean         = boolean .
String          = str .

# Primitives
word            = `[a-zA-Z_][a-zA-Z0-9_]*` .
number          =  `-?[0-9]+(\.[0-9]+)?` .
boolean         = `true|false` .
str             = `"[^"]*"` | `'[^']*'` | '`' { `[^\x60]` } '`' .
lbrace          = "{" .
rbrace          = "}" .
br              = ";" .
white_space     = ` |\t|\r|\n|#.*` .