From 6db7a6a158513b85f99ec2e2f9363bf2063f5133 Mon Sep 17 00:00:00 2001 From: Teddy Date: Mon, 12 Aug 2013 22:11:42 +0800 Subject: ... --- builtin.cpp | 49 ++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 38 insertions(+), 11 deletions(-) (limited to 'builtin.cpp') diff --git a/builtin.cpp b/builtin.cpp index 8a94a53..9ebbf28 100644 --- a/builtin.cpp +++ b/builtin.cpp @@ -46,6 +46,7 @@ Pair *SpecialOptIf::call(Pair *args, Environment * &envt, { if (ret_info->state == empty_list) { + delete *top_ptr; *top_ptr++ = gc.attach(TO_PAIR(args->cdr)->car); gc.expose(args); return ret_addr->next; // Move to the next instruction @@ -61,7 +62,8 @@ Pair *SpecialOptIf::call(Pair *args, Environment * &envt, { second->next = NULL; // Undo pop and invoke again - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = empty_list; gc.expose(args); return second; @@ -70,13 +72,15 @@ Pair *SpecialOptIf::call(Pair *args, Environment * &envt, { third->next = NULL; // Undo pop and invoke again - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = empty_list; gc.expose(args); return third; } else { + delete *top_ptr; *top_ptr++ = gc.attach(unspec_obj); gc.expose(args); return ret_addr->next; @@ -85,7 +89,8 @@ Pair *SpecialOptIf::call(Pair *args, Environment * &envt, } else { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(TO_PAIR(ret_addr->car)->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -166,6 +171,7 @@ Pair *SpecialOptLambda::call(Pair *args, Environment * &envt, for (Pair *ptr = body; ptr != empty_list; ptr = TO_PAIR(ptr->cdr)) ptr->next = NULL; // Make each expression isolated + delete *top_ptr; *top_ptr++ = gc.attach(new ProcObj(body, envt, params)); gc.expose(args); return ret_addr->next; // Move to the next instruction @@ -202,7 +208,8 @@ Pair *SpecialOptDefine::call(Pair *args, Environment * &envt, { if (!ret_info->state) { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(TO_PAIR(pc->cdr)->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -241,6 +248,7 @@ Pair *SpecialOptDefine::call(Pair *args, Environment * &envt, obj = new ProcObj(body, envt, params); } envt->add_binding(id, obj); + delete *top_ptr; *top_ptr++ = unspec_obj; gc.expose(args); return ret_addr->next; @@ -273,7 +281,8 @@ Pair *SpecialOptSet::call(Pair *args, Environment * &envt, if (!ret_info->state) { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(TO_PAIR(pc->cdr)->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -287,6 +296,7 @@ Pair *SpecialOptSet::call(Pair *args, Environment * &envt, bool flag = envt->add_binding(id, TO_PAIR(args->cdr)->car, false); if (!flag) throw TokenError(id->ext_repr(), RUN_ERR_UNBOUND_VAR); + delete *top_ptr; *top_ptr++ = unspec_obj; gc.expose(args); return ret_addr->next; @@ -303,6 +313,7 @@ Pair *SpecialOptQuote::call(Pair *args, Environment * &envt, Continuation * &cont, FrameObj ** &top_ptr) { Pair *ret_addr = static_cast(*top_ptr)->addr; Pair *pc = static_cast(ret_addr->car); + delete *top_ptr; *top_ptr++ = TO_PAIR(pc->cdr)->car; gc.expose(args); return ret_addr->next; @@ -322,13 +333,15 @@ Pair *SpecialOptEval::call(Pair *args, Environment * &envt, Pair *ret_addr = ret_info->addr; if (ret_info->state) { + delete *top_ptr; *top_ptr++ = TO_PAIR(args->cdr)->car; gc.expose(args); return ret_addr->next; // Move to the next instruction } else { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(args->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -350,13 +363,15 @@ Pair *SpecialOptAnd::call(Pair *args, Environment * &envt, Pair *pc = static_cast(ret_addr->car); if (pc->cdr == empty_list) { + delete *top_ptr; *top_ptr++ = new BoolObj(true); gc.expose(args); return ret_addr->next; } if (!ret_info->state) { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(pc->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -367,13 +382,15 @@ Pair *SpecialOptAnd::call(Pair *args, Environment * &envt, { if (ret_info->state->cdr == empty_list) // the last member { + delete *top_ptr; *top_ptr++ = ret; gc.expose(args); return ret_addr->next; } else { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(ret_info->state->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -382,6 +399,7 @@ Pair *SpecialOptAnd::call(Pair *args, Environment * &envt, } else { + delete *top_ptr; *top_ptr++ = ret; gc.expose(args); return ret_addr->next; @@ -402,13 +420,15 @@ Pair *SpecialOptOr::call(Pair *args, Environment * &envt, Pair *pc = static_cast(ret_addr->car); if (pc->cdr == empty_list) { + delete *top_ptr; *top_ptr++ = new BoolObj(false); gc.expose(args); return ret_addr->next; } if (!ret_info->state) { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(pc->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -419,13 +439,15 @@ Pair *SpecialOptOr::call(Pair *args, Environment * &envt, { if (ret_info->state->cdr == empty_list) // the last member { + delete *top_ptr; *top_ptr++ = ret; gc.expose(args); return ret_addr->next; } else { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = TO_PAIR(ret_info->state->cdr); ret_info->state->next = NULL; gc.expose(args); @@ -434,6 +456,7 @@ Pair *SpecialOptOr::call(Pair *args, Environment * &envt, } else { + delete *top_ptr; *top_ptr++ = ret; gc.expose(args); return ret_addr->next; @@ -504,6 +527,7 @@ Pair *SpecialOptForce::call(Pair *_args, Environment * &envt, { EvalObj *mem = args->car; prom->feed_mem(mem); + delete *top_ptr; *top_ptr++ = mem; gc.expose(_args); return ret_addr->next; // Move to the next instruction @@ -516,13 +540,15 @@ Pair *SpecialOptForce::call(Pair *_args, Environment * &envt, EvalObj *mem = prom->get_mem(); if (mem) // fetch from memorized result { + delete *top_ptr; *top_ptr++ = mem; gc.expose(_args); return ret_addr->next; } else // force { - top_ptr += 2; + gc.attach(*(++top_ptr)); + top_ptr++; ret_info->state = prom->get_entry(); ret_info->state->next = NULL; gc.expose(_args); @@ -544,6 +570,7 @@ Pair *SpecialOptDelay::call(Pair *args, Environment * &envt, Continuation * &cont, FrameObj ** &top_ptr) { Pair *ret_addr = static_cast(*top_ptr)->addr; Pair *pc = static_cast(ret_addr->car); + delete *top_ptr; *top_ptr++ = new PromObj(TO_PAIR(pc->cdr)->car); gc.expose(args); return ret_addr->next; // Move to the next instruction -- cgit v1.2.3