Waddle_Language/grammar/declarations/function_declarations.bnf

24 lines
692 B
BNF

<function_declaration> ::= <accessibility_modifier>"fn" <identifier>
<function_signature>
["fails" "with" <error_type_list>]?
"{" <statement>* "}"
<function_signature> ::= "(" <parameter_list>? ")"
"->" <return_type_list>
<error_type_list> ::= <error_type> ("," <error_type>)*
<error_type> ::= <identifier> ["/" <identifier>]?
<parameter_list> ::= <required_parameter>
("," <required_parameter>)*
[("," <default_parameter>)*]
<required_parameter> ::= <identifier> ":" <parameter_type>
<default_parameter> ::= <identifier> ".default(" <literal> ")"
<lambda_declaration> ::= "fn" "(" <parameter_list>? ")"
"->" "[" <type> "]"
"{" <statement>* "}"