parsing fixed length field with yacc/bison

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parsing fixed length field with yacc/bison

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#1 (permalink)

01-22-2009

sungita

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Join Date: Jan 2009

Posts: 1

parsing fixed length field with yacc/bison

How to specify the token length in a yacc file?
sample input format
<field1,data type ans,fixed length 6> followed by <field2,data type ans,fixed length 3>

Example i/p and o/p
Sample Input: "ab* d2 9o"
O/p : "Field1 [ab* d2] Field2 [ 9o] "

yacc/bison grammar:
record : AlphaNumericSpecialOfLength6 AlphaNAumericSpecialOfLength3
/** not like
record : FIELD1 FIELD2 { ....};
FIELD1 : ANS ANS ANS ANS ANS ANS;
FIELD2 : ANS ANS ANS { ...} ; ***/
{ printf("Field1 [%s] Field2 [%s] \n", $1 , $2); }

How to define grammar for this in yacc/bison?

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