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include defs
# enter --- place a symbol in the symbol table, updating if already present
subroutine enter (symbol, info, st)
character symbol (ARB)
integer info (ARB)
pointer st
DS_DECL(Mem, 1)
integer i, nodsiz, j
integer stlu, length
pointer node, pred
pointer dsget
nodsiz = Mem (st)
if (stlu (symbol, node, pred, st) == NO) {
node = dsget (1 + nodsiz + length (symbol) + 1)
Mem (node + ST_LINK) = LAMBDA
Mem (pred + ST_LINK) = node
i = 1
j = node + ST_DATA + nodsiz
while (symbol (i) != EOS) {
Mem (j) = symbol (i)
i = i + 1
j = j + 1
}
Mem (j) = EOS
}
for (i = 1; i <= nodsiz; i = i + 1) {
j = node + ST_DATA + i - 1
Mem (j) = info (i)
}
return
end
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