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authorTeddy <ted.sybil@gmail.com>2013-08-11 15:20:27 +0800
committerTeddy <ted.sybil@gmail.com>2013-08-11 15:20:27 +0800
commit856267ebffee5506047fdb56d1b7b317566adaad (patch)
treee640784114011f618e097cd9ad31371d6c44f949 /eval.cpp
parent48b6bcbcc7973129b2d2c024919aed80ce3fe349 (diff)
added more comments
Diffstat (limited to 'eval.cpp')
-rw-r--r--eval.cpp16
1 files changed, 15 insertions, 1 deletions
diff --git a/eval.cpp b/eval.cpp
index 6376ba9..7b11600 100644
--- a/eval.cpp
+++ b/eval.cpp
@@ -89,7 +89,21 @@ Evaluator::Evaluator() {
add_builtin_routines();
}
-void push(Pair * &pc, FrameObj ** &top_ptr, Environment *envt) {
+inline bool make_exec(Pair *ptr) {
+ if (ptr == empty_list) return true;
+ EvalObj *nptr;
+ for (;;)
+ if ((nptr = ptr->cdr)->is_pair_obj())
+ {
+ ptr->next = TO_PAIR(nptr);
+ ptr = ptr->next;
+ }
+ else break;
+ ptr->next = NULL;
+ return ptr->cdr == empty_list;
+}
+
+inline void push(Pair * &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