Implement a symbol table for the Pascal subset. you may use the code from the JASON compiler as a basis for your compiler, however, keep in mind that you need to add an auxiliary table to keep track of upper and lower bounds for array.
The attribute table now needs a pointer to the auxiliary table as well as an indication of how many auxiliary table entries it is pointing to (2 - one pointing to lower bound and one pointing to upper bound). The auxiliary table simple contains pointers to the appropriate attribute table entries.
If your input is the program:
PROGRAM Sample;
CONST
x = 15;
... ... ...
BEGIN
... ... ...
END.
Your initial output should be:
PROGRAM tokprogram SAMPLE tokidentifier ; toksemicolon CONST tokword X tokidentifier = tokequals 15 toknumber ; toksemicolon ... ... ... BEGIN tokbegin ... ... ... END tokend . tokperiod