Todo List
- create a testsuite
Features
- add "elsif" and "switch/case" in macro-language
- add option for number of draw in Metropolis subsamples [parser + Matlab code]
- add option for algorithm to solve generalized Sylverster equation [parser + Matlab code]
- add new function diff(), sum loops and prod loops in modeling language. Should be unrolled. [parser]
Error checking
- add a check for number of equations and endogenous in the case of Ramsey policy
improve error message when dealing with ExprNode::EvalException (in particular for reporting in ModelTree::evaluateJacobian)
- add warning for missing variable in current period. This is permissible in some cases, Michel should write a note about it [parser]
- improve error and warning handling in parser. Find a way that users see Warnings even if scrolling by [parser]
Checks concerning the structure of the mod file
- allow a single histval, endval, initval block
- check that a given parameter is never declared two times
- check that observation trends is used after a varobs
- add a warning if homotopy_setup block comes after steady
Checks concerning the types of variables allowed in expressions
- varobs must be declared endogenous
- shocks must be exogenous
- objective_planner must be endogenous without leads/lags
Optimizations / Enhancements
optimize expression sharing (for example use the fact that A+(B+C) = (A+B)+C); this would also enhance the pre-computing of numerical constants (for the moment, the algorithm can't reduce 1+(x+1))
if there is a series of operators with the same precedence, we can collect the constant and reduce them 1+(x+2}=(1+2)+x=3+x
but it is possible to factorize more complicated expressions: 2*x+3*x=(2+3)*x=5*x. The two simplifications aren't identical but strongly related. -- MichelJuillard 2007-05-08 19:53:46
rewrite outputting system (by using a subclass of ostream containing the output type, and by overloading << operator)
- improve internal representation of estimated_params* statements