Complete syntax for Nandlang in EBNF notation:
expr ::= nandexpr | funccall | literal | variable
nandexpr ::= expr '!' expr
funccall ::= identifier '(' [exprlist] ')'
literal ::= digit [index] | character
character ::= '\'' printable character '\'' | '\'' '\\' escape '\''
escape ::= '0' | 't' | 'n' | 'v' | 'f' | 'r'
exprlist ::= expr { ',' expr}
idlist ::= variable { ',' idlist }
funcparam ::= [idlist] [':' [idlist]]
funcdef ::= 'function' identifier '(' funcparam ')' block
block ::= '{' {statement} '}'
statement ::= ifstmt | whilestmt | varstmt | expr ';'
ifstmt ::= 'if' expr block {'else' block}
whilestmt ::= 'while' expr block
varstmt ::= {'var'} idlist '=' exprlist ';'
forstmt ::= 'for' '(' ':' variable {',' ':' variable } ')' block
identifier ::= (alphabetic character | '_') {alphanumeric character | '_'}
variable ::= identifier [index]
index ::= '[' digit { digit } ']' | '[' 'ptr' ']'alphabetic character is any character that is true for std::isalpha, digit is any character that is true for std::isdigit, alphanumeric character is any character that is true for std::isalpha or std::isdigit, and printable character is any character that is true for std::isprint. Refer to C++ documentation for more information about these functions.