machine The parser output is the input of the abstract machine, which outputs the expression value. For example, L{a=*(+(2,2),1) I+(a,a)} results in 8, because a+a=4+4. Some examples of these evaluations are shown below. Let expressions are evaluated using a symbol table, as shown in the examples. In the last example, given the symbol table ’a1b3a2’, (a) occurs twice in the expression. In the m...
