Hold together local variable and stack state.
Hold together local variable and stack state. The equals method uses reference equality for top and bottom, and structural equality for other values.
Return the bottom element.
Return the bottom element.
Compute the least upper bound of a list of elements.
Compute the least upper bound of a list of elements.
Return the least upper bound of a and b.
Return the least upper bound of a and b.
Return the top element.
Return the top element.
The lattice for this analysis.