Check whether a parse table corresponds to a certain expression
is_curly_expr(pd)is_cond_expr(pd)
is_while_expr(pd)
is_function_call(pd)
is_function_dec(pd)
is_comment(pd)
A parse table.
is_curly_expr: Checks whether pd contains an expression wrapped in
curly brackets.
is_cond_expr: Checks whether pd contains is a conditional expression.
is_while_expr: Checks whether pd contains is a while loop.
is_function_call: Checks whether pd is a function call.
is_function_dec: Checks whether pd is a function declaration.
is_comment: Checks for every token whether or not it is a comment.