Mercurial > dropbear

annotate libtommath/tombc/grammar.txt @ 1200:9a944a243f08 DROPBEAR_2015.71

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2015.71
author Matt Johnston <matt@ucc.asn.au>
date Thu, 03 Dec 2015 21:23:54 +0800
parents eed26cff980b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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284
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1 program := program statement | statement | empty
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2 statement := { statement } |
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3 identifier = numexpression; |
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4 identifier[numexpression] = numexpression; |
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5 function(expressionlist); |
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6 for (identifer = numexpression; numexpression; identifier = numexpression) { statement } |
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7 while (numexpression) { statement } |
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8 if (numexpresion) { statement } elif |
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9 break; |
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10 continue;
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11
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12 elif := else statement | empty
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13 function := abs | countbits | exptmod | jacobi | print | isprime | nextprime | issquare | readinteger | exit
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14 expressionlist := expressionlist, expression | expression
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15
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16 // LR(1) !!!?
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17 expression := string | numexpression
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18 numexpression := cmpexpr && cmpexpr | cmpexpr \|\| cmpexpr | cmpexpr
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19 cmpexpr := boolexpr < boolexpr | boolexpr > boolexpr | boolexpr == boolexpr |
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20 boolexpr <= boolexpr | boolexpr >= boolexpr | boolexpr
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21 boolexpr := shiftexpr & shiftexpr | shiftexpr ^ shiftexpr | shiftexpr \| shiftexpr | shiftexpr
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22 shiftexpr := addsubexpr << addsubexpr | addsubexpr >> addsubexpr | addsubexpr
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23 addsubexpr := mulexpr + mulexpr | mulexpr - mulexpr | mulexpr
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24 mulexpr := expr * expr | expr / expr | expr % expr | expr
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25 expr := -nexpr | nexpr
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26 nexpr := integer | identifier | ( numexpression ) | identifier[numexpression]
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27
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28 identifier := identifer digits | identifier alpha | alpha
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29 alpha := a ... z | A ... Z
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30 integer := hexnumber | digits
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31 hexnumber := 0xhexdigits
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32 hexdigits := hexdigits hexdigit | hexdigit
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33 hexdigit := 0 ... 9 | a ... f | A ... F
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34 digits := digits digit | digit
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35 digit := 0 ... 9