1
program := program statement | statement | empty
2
statement := { statement } |
3
identifier = numexpression; |
4
identifier[numexpression] = numexpression; |
5
function(expressionlist); |
6
for (identifer = numexpression; numexpression; identifier = numexpression) { statement } |
7
while (numexpression) { statement } |
8
if (numexpresion) { statement } elif |
12
elif := else statement | empty
13
function := abs | countbits | exptmod | jacobi | print | isprime | nextprime | issquare | readinteger | exit
14
expressionlist := expressionlist, expression | expression
17
expression := string | numexpression
18
numexpression := cmpexpr && cmpexpr | cmpexpr \|\| cmpexpr | cmpexpr
19
cmpexpr := boolexpr < boolexpr | boolexpr > boolexpr | boolexpr == boolexpr |
20
boolexpr <= boolexpr | boolexpr >= boolexpr | boolexpr
21
boolexpr := shiftexpr & shiftexpr | shiftexpr ^ shiftexpr | shiftexpr \| shiftexpr | shiftexpr
22
shiftexpr := addsubexpr << addsubexpr | addsubexpr >> addsubexpr | addsubexpr
23
addsubexpr := mulexpr + mulexpr | mulexpr - mulexpr | mulexpr
24
mulexpr := expr * expr | expr / expr | expr % expr | expr
25
expr := -nexpr | nexpr
26
nexpr := integer | identifier | ( numexpression ) | identifier[numexpression]
28
identifier := identifer digits | identifier alpha | alpha
29
alpha := a ... z | A ... Z
30
integer := hexnumber | digits
31
hexnumber := 0xhexdigits
32
hexdigits := hexdigits hexdigit | hexdigit
33
hexdigit := 0 ... 9 | a ... f | A ... F
34
digits := digits digit | digit