diff options
author | Teddy <ted.sybil@gmail.com> | 2013-08-04 10:15:13 +0800 |
---|---|---|
committer | Teddy <ted.sybil@gmail.com> | 2013-08-04 10:15:13 +0800 |
commit | d42c4bd97982c1252c5ad638a11aea5319c4be7f (patch) | |
tree | 86c529858dfa0c19619b772386a7c592683cd6fe /eval.cpp | |
parent | 9c1af3a6e77d7a0e1dc66aa9166d0ead6a56d963 (diff) |
replaced many `dynamic_cast` to `static_cast`
Diffstat (limited to 'eval.cpp')
-rw-r--r-- | eval.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
@@ -34,14 +34,16 @@ void push(Cons * &pc, FrameObj ** &top_ptr, Environment *envt) { if (pc->car->is_simple_obj()) // Not an opt invocation { *top_ptr = envt->get_obj(pc->car); // Objectify the symbol - dynamic_cast<EvalObj*>(*top_ptr)->prepare(pc); + // static_cast because of is_simple_obj() is true + static_cast<EvalObj*>(*top_ptr)->prepare(pc); top_ptr++; pc = pc->next; // Move to the next instruction } else // Operational Invocation { *top_ptr++ = new RetAddr(pc); // Push the return address - pc = dynamic_cast<Cons*>(pc->car); // Go deeper to enter the call + // static_cast because of is_simple_obj() is false + pc = static_cast<Cons*>(pc->car); // Go deeper to enter the call } } @@ -67,8 +69,9 @@ EvalObj *Evaluator::run_expr(Cons *prog) { { Cons *args = empty_list; while (!(*(--top_ptr))->is_ret_addr()) - args = new Cons(dynamic_cast<EvalObj*>(*top_ptr), args); - RetAddr *ret_addr = dynamic_cast<RetAddr*>(*top_ptr); + args = new Cons(static_cast<EvalObj*>(*top_ptr), args); + //< static_cast because the while condition + RetAddr *ret_addr = static_cast<RetAddr*>(*top_ptr); if (!ret_addr->addr) { Cons *nexp = cont->proc_body->cdr; @@ -87,5 +90,6 @@ EvalObj *Evaluator::run_expr(Cons *prog) { pc = dynamic_cast<OptObj*>(args->car)->call(args, envt, cont, top_ptr); } } - return dynamic_cast<EvalObj*>(*(eval_stack)); + // static_cast because the previous while condition + return static_cast<EvalObj*>(*(eval_stack)); } |