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eval.c
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/* $Id: eval.c,v 1.57 2012/03/06 06:09:28 mit-sato Exp $ */
#include <toy.h>
#include <assert.h>
#include <setjmp.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include "types.h"
#include "global.h"
#include "hash.h"
#include "cstack.h"
static Toy_Type* bind_args(Toy_Interp*, Toy_Type* arglist, struct _toy_argspec* argspec,
Toy_Env**, Hash* args, int fun_paramno, int call_paramno);
static Toy_Type* eval_sig_handl(Toy_Interp *interp, int code);
static Toy_Type* toy_yield_bind(Toy_Interp *interp, Toy_Type *bind_var);
/*
#define SET_RESULT(interp,obj) \
hash_set_t(interp->func_stack[interp->cur_func_stack]->localvar,const_Question,obj)
*/
#define SIG_ACTION() \
if (sig_flag && (! interp->co_calling)) { \
Toy_Type *sig_result; \
int code = sig_flag; \
sig_flag = 0; \
sig_result = eval_sig_handl(interp, code); \
if (sig_result && (GET_TAG(sig_result) != NIL)) { \
result = sig_result; \
} \
}
Toy_Type*
toy_eval_script(Toy_Interp* interp, Toy_Type *script) {
Toy_Type *l;
Toy_Env *env = NULL;
Toy_Type* result;
int t;
int script_id;
extern volatile sig_atomic_t CStack_in_baria;
result = const_Nil;
SIG_ACTION();
l = script->u.statement_list;
if (IS_LIST_NULL(l)) return result;
script_id = interp->script_id;
if (GET_SCRIPT_ID(script) > 0) {
interp->script_id = GET_SCRIPT_ID(script);
}
if (CStack_in_baria) {
/* +++ */
fprintf(stderr, "toy_eval_script: detect SOVF(1)\n");
result = new_exception(TE_STACKOVERFLOW, "C stack overflow.", interp);
interp->script_id = script_id;
cstack_return();
return result;
}
while (l) {
result = toy_eval(interp, list_get_item(l), &env);
interp->last_status = result;
if (CStack_in_baria) {
/* +++ */
fprintf(stderr, "toy_eval_script: detect SOVF(2)\n");
result = new_exception(TE_STACKOVERFLOW, "C stack overflow.", interp);
}
SIG_ACTION();
t = GET_TAG(result);
if ((t == CONTROL) || (t == EXCEPTION)) {
if ((t == EXCEPTION) &&
(strcmp(TE_NOFUNC, cell_get_addr(result->u.exception.code)) == 0)) {
Toy_Type *body;
if (NULL != hash_get_t(interp->funcs, const_unknown)) {
body = new_list(const_unknown);
list_set_cdr(body, list_get_item(l)->u.statement.item_list);
result = toy_eval(interp,
new_statement(body, interp->trace_info->line),
&env);
interp->last_status = result;
}
}
interp->script_id = script_id;
if (CStack_in_baria) cstack_return();
return result;
}
l = list_next(l);
}
interp->script_id = script_id;
return result;
}
Toy_Type*
toy_eval(Toy_Interp* interp, Toy_Type *statement, Toy_Env** env) {
Toy_Type *l;
Toy_Type *first, *tfirst, *first_org, *method, *self;
Cell *msg;
Toy_Obj_Env *obj_env;
int ostack_use, lstack_use;
Toy_Type *ret;
Toy_Type *posargs, *posargsl;
Hash *namedargs;
int arglen;
Toy_Type *arg, *name;
Hash *local_var;
int script_id;
int paramno_hint;
local_var = NULL;
control_goto:
ret = NULL;
obj_env = NULL;
lstack_use = 0;
ostack_use = 0;
arglen = 0;
script_id = -1;
l = statement->u.statement.item_list;
interp->trace_info = statement->u.statement.trace_info;
interp->trace_info->statement = statement;
paramno_hint = GET_PARAMNO(statement);
if (interp->trace) {
char *buff;
int sts;
buff = GC_MALLOC(512);
ALLOC_SAFE(buff);
snprintf(buff, 512, "%s:%d: %s\n",
get_script_path(interp, interp->script_id),
interp->trace_info->line,
to_string(statement));
buff[511] = 0;
sts = write(interp->trace_fd, buff, strlen(buff));
}
if (IS_LIST_NULL(l)) {
ret = const_Nil;
goto exit_eval;
}
first_org = first = list_get_item(l);
if (GET_TAG(first) == REF) {
first = toy_resolv_var(interp, first, 1);
if (GET_TAG(first) == EXCEPTION) {
ret = first;
goto exit_eval;
}
} else if (GET_TAG(first) == LIST) {
first = toy_expand(interp, first, env);
}
self = first;
if (GET_TAG(first) != SYMBOL && GET_TAG(first) != LIST) {
first = toy_expand(interp, first, env);
if (GET_TAG(first) == EXCEPTION) {
ret = first;
goto exit_eval;
}
if (GET_TAG(first) == BIND) {
ret = toy_yield_bind(interp, first->u.bind_var);
goto exit_eval;
}
self = first;
}
switch (GET_TAG(first)) {
case SYMBOL:
interp->trace_info->func_name = first;
tfirst = toy_resolv_function(interp, first);
if (NULL == tfirst) {
Cell *msg;
msg = new_cell("No such function, '");
cell_add_str(msg, to_string(first));
cell_add_str(msg, "'.");
ret = new_exception(TE_NOFUNC, cell_get_addr(msg), interp);
goto exit_eval;
}
first = tfirst;
break;
case OBJECT: case FUNC: case NATIVE:
break;
default:
first = toy_resolv_object(interp, first);
if (GET_TAG(first) == EXCEPTION) {
ret = first;
goto exit_eval;
}
}
if (GET_TAG(first) == OBJECT) {
l = list_next(l);
method = list_get_item(l);
if (method == NULL) {
msg = new_cell("No specified method");
ret = new_exception(TE_NOMETHOD, cell_get_addr(msg), interp);
goto exit_eval;
}
if (GET_TAG(method) != SYMBOL) {
method = toy_expand(interp, method, env);
if (GET_TAG(method) == EXCEPTION) {
ret = first;
goto exit_eval;
}
}
if (GET_TAG(method) != SYMBOL) {
msg = new_cell("Method is not a symbol, '");
cell_add_str(msg, to_string(method));
cell_add_str(msg, "'.");
ret = new_exception(TE_BADMETHOD, cell_get_addr(msg), interp);
goto exit_eval;
}
interp->trace_info->func_name = method;
method = search_method(interp, first, method);
if (GET_TAG(method) == EXCEPTION) {
ret = method;
goto exit_eval;
}
obj_env = toy_new_obj_env(interp, first, self);
interp->trace_info->object_name = first;
first = method;
if (paramno_hint != TAG_MAX_PARAMNO) {
paramno_hint --;
}
}
switch (GET_TAG(first)) {
case NATIVE:
l = list_next(l);
posargsl = posargs = new_list(NULL);
namedargs = new_hash();
while (l) {
arg = list_get_item(l);
if (GET_TAG(arg) == SYMBOL) {
if (IS_SWITCH_SYM(arg)) {
Cell *ckey;
ckey = new_cell(&(cell_get_addr(arg->u.symbol.cell)[1]));
cell_add_str(ckey, ":");
hash_set(namedargs, cell_get_addr(ckey), const_int1);
} else if (IS_NAMED_SYM(arg)) {
name = arg;
l = list_next(l);
if (NULL == l) {
msg = new_cell("No given named argument variable, name: '");
cell_add_str(msg, cell_get_addr(name->u.symbol.cell));
cell_add_str(msg, "'.");
ret = new_exception(TE_NONAMEARG, cell_get_addr(msg), interp);
goto exit_eval;
}
arg = toy_expand(interp, list_get_item(l), env);
if (GET_TAG(arg) == EXCEPTION) {
ret = arg;
goto exit_eval;
}
hash_set_t(namedargs, name, arg);
} else {
posargs = list_append(posargs, arg);
arglen++;
}
} else {
arg = toy_expand(interp, arg, env);
if (GET_TAG(arg) == EXCEPTION) {
ret = arg;
goto exit_eval;
}
posargs = list_append(posargs, arg);
arglen++;
}
l = list_next(l);
}
if (NULL != obj_env) {
if (0 == toy_push_obj_env(interp, obj_env)) {
ret = new_exception(TE_STACKOVERFLOW, "Object satck overflow.", interp);
goto exit_eval;
}
ostack_use = 1;
}
ret = (first->u.native.cfunc)(interp, posargsl, namedargs, arglen);
goto exit_eval;
case FUNC:
if (! local_var) {
local_var = new_hash();
}
ret = bind_args(interp, list_next(l), first->u.func.argspec, env, local_var,
GET_PARAMNO(first), paramno_hint);
if (GET_TAG(ret) == EXCEPTION) {
goto exit_eval;
}
if (NULL != obj_env) {
if (0 == toy_push_obj_env(interp, obj_env)) {
ret = new_exception(TE_STACKOVERFLOW, "Object satck overflow.", interp);
goto exit_eval;
}
ostack_use = 1;
}
script_id = interp->script_id;
interp->script_id = GET_SCRIPT_ID(first->u.func.closure->u.closure.block_body);
if (0 == toy_push_func_env(interp, local_var,
first->u.func.closure->u.closure.env->func_env, NULL)) {
ret = new_exception(TE_STACKOVERFLOW, "Function satck overflow.", interp);
goto exit_eval;
}
lstack_use = 1;
ret = toy_eval_script(interp, first->u.func.closure->u.closure.block_body);
if ((GET_TAG(ret) == CONTROL) && (ret->u.control.code != CTRL_GOTO)) {
ret = ret->u.control.ret_value;
}
goto exit_eval;
default:
msg = new_cell("No runnable object, '");
cell_add_str(msg, to_string(first));
cell_add_str(msg, "'.");
ret = new_exception(TE_NORUNNABLE, cell_get_addr(msg), interp);
}
exit_eval:
if (ostack_use) {
toy_pop_obj_env(interp);
}
if (lstack_use) {
toy_pop_func_env(interp);
if ((GET_TAG(ret) == CONTROL) && (ret->u.control.code == CTRL_GOTO)) {
Toy_Type *ctrl_ret;
ctrl_ret = ret->u.control.ret_value;
local_var = list_get_item(ctrl_ret)->u.dict;
ctrl_ret = list_next(ctrl_ret);
statement = new_statement(list_get_item(ctrl_ret), interp->trace_info->line);
goto control_goto;
}
}
/* SET_RESULT(interp, ret); */
if (GET_TAG(ret) == EXCEPTION) {
hash_set_t(interp->globals, const_atstacktrace,
list_get_item(list_next(ret->u.exception.msg_list)));
}
if (script_id != -1) interp->script_id = script_id;
return ret;
}
Toy_Type*
toy_expand(Toy_Interp* interp, Toy_Type* obj, Toy_Env** env) {
switch (GET_TAG(obj)) {
case REF:
return toy_resolv_var(interp, obj, 1);
case LIST:
return toy_expand_list(interp, obj, env);
case BLOCK:
if (*env == NULL) {
*env = new_closure_env(interp);
}
return new_closure(obj->u.block_body, *env, interp->script_id);
case EVAL:
return toy_eval_script(interp, obj->u.eval_body);
case GETMACRO:
{
Toy_Type *o, *p, *st, *stl, *result;
o = toy_expand(interp, obj->u.getmacro.obj, env);
if (GET_TAG(o) == EXCEPTION) return o;
p = toy_expand(interp, obj->u.getmacro.para, env);
if (GET_TAG(p) == EXCEPTION) return p;
stl = st = new_list(o);
st = list_append(st, const_Get);
st = list_append(st, p);
result = toy_eval(interp, new_statement(stl, interp->trace_info->line), env);
return result;
}
case INITMACRO:
{
Toy_Type *o, *p, *st, *stl, *result;
o = toy_expand(interp, obj->u.initmacro.class, env);
if (GET_TAG(o) == EXCEPTION) return o;
p = toy_expand(interp, obj->u.initmacro.param, env);
if (GET_TAG(p) == EXCEPTION) return p;
stl = st = new_list(const_new);
st = list_append(st, o);
st = list_append(st, const_init);
st = list_append(st, new_list(p));
result = toy_eval(interp, new_statement(stl, interp->trace_info->line), env);
return result;
}
default:
return obj;
}
}
Toy_Type*
toy_expand_list(Toy_Interp* interp, Toy_Type* list, Toy_Env** env) {
Toy_Type *nlist, *l, *sl;
Toy_Type *a;
l = nlist = new_list(NULL);
sl = list;
while (sl) {
if (GET_TAG(sl) != LIST) {
if (GET_TAG(sl) == SYMBOL) {
a = sl;
} else {
a = toy_expand(interp, sl, env);
}
list_set_cdr(nlist, a);
break;
}
a = toy_expand(interp, list_get_item(sl), env);
if (GET_TAG(a) == EXCEPTION) return a;
nlist = list_append(nlist, a);
sl = list_next(sl);
}
return l;
}
Toy_Type*
toy_resolv_function(Toy_Interp* interp, Toy_Type* obj) {
Hash *h;
Toy_Type *val;
h = interp->funcs;
val = hash_get_t(h, obj);
if (NULL != val) return val;
h = interp->classes;
val = hash_get_t(h, obj);
if (NULL != val) return val;
val = search_method(interp, interp->obj_stack[interp->cur_obj_stack]->cur_object, obj);
if (GET_TAG(val) == EXCEPTION) return NULL;
return val;
}
Toy_Type*
toy_resolv_var(Toy_Interp* interp, Toy_Type* var, int stack_trace) {
Hash *h;
Toy_Type *val;
Cell *c;
Toy_Func_Env *upenv;
h = interp->func_stack[interp->cur_func_stack]->localvar;
val = hash_get_t(h, var);
if (NULL != val) {
if (IS_LAZY(val) && (GET_TAG(val) == CLOSURE)) {
val = eval_closure(interp, val);
hash_set_t(h, var, val);
}
return val;
}
upenv = interp->func_stack[interp->cur_func_stack]->upstack;
while (upenv) {
h = upenv->localvar;
if (h) {
val = hash_get_t(h, var);
if (NULL != val) {
if (IS_LAZY(val) && (GET_TAG(val) == CLOSURE)) {
val = eval_closure(interp, val);
hash_set_t(h, var, val);
}
return val;
}
}
upenv = upenv->upstack;
}
h = (interp->obj_stack[interp->cur_obj_stack])->cur_object_slot;
val = hash_get_t(h, var);
if (NULL != val) {
if (IS_LAZY(val) && (GET_TAG(val) == CLOSURE)) {
val = eval_closure(interp, val);
hash_set_t(h, var, val);
}
return val;
}
h = interp->globals;
val = hash_get_t(h, var);
if (NULL != val) {
if (IS_LAZY(val) && (GET_TAG(val) == CLOSURE)) {
val = eval_closure(interp, val);
hash_set_t(h, var, val);
}
return val;
}
c = new_cell("No such variable, '");
cell_add_str(c, cell_get_addr(var->u.ref.cell));
cell_add_str(c, "'.");
if (stack_trace) {
return new_exception(TE_NOVAR, cell_get_addr(c), interp);
} else {
return new_exception(TE_NOVAR, cell_get_addr(c), NULL);
}
}
Toy_Type*
search_method(Toy_Interp *interp, Toy_Type *object, Toy_Type *method) {
Hash *h;
Toy_Type *ho;
Toy_Type *m;
Toy_Type *l;
Toy_Type *a;
Cell *msg;
switch (GET_TAG(object)) {
case NATIVE: case FUNC:
return object;
case OBJECT:
#ifdef HAS_GCACHE
m = hash_get_method_cache(interp->gcache, object, method);
if (m) {
interp->cache_hit ++;
return m;
}
#endif
h = object->u.object.slots;
m = hash_get_t(h, method);
if (m) {
#ifdef HAS_GCACHE
hash_set_method_cache(interp->gcache, object, method, m);
interp->cache_missing ++;
#endif
return m;
} else {
l = object->u.object.delegate_list;
a = list_get_item(l);
while (a) {
if (GET_TAG(a) == SYMBOL) {
ho = hash_get_t(interp->classes, a);
if (NULL == ho) goto error2;
} else if (GET_TAG(a) == OBJECT) {
ho = a;
} else {
goto error2;
}
m = search_method(interp, ho, method);
if (GET_TAG(m) != EXCEPTION) {
#ifdef HAS_GCACHE
hash_set_method_cache(interp->gcache, object, method, m);
interp->cache_missing ++;
#endif
return m;
}
l = list_next(l);
a = list_get_item(l);
}
goto error;
}
default:
return toy_resolv_object(interp, object);
}
error:
msg = new_cell("No such method, '");
cell_add_str(msg, to_string(method));
cell_add_str(msg, "'.");
return new_exception(TE_NOMETHOD, cell_get_addr(msg), interp);
error2:
msg = new_cell("No such delegate class, '");
cell_add_str(msg, cell_get_addr(a->u.symbol.cell));
cell_add_str(msg, "'.");
return new_exception(TE_NODELEGATE, cell_get_addr(msg), interp);
}
Toy_Type*
toy_resolv_object(Toy_Interp *interp, Toy_Type *object) {
Toy_Type *val;
Cell *msg;
switch (GET_TAG(object)) {
case NIL:
val = hash_get_t(interp->classes, const_NilClass);
break;
case CLOSURE:
val = hash_get_t(interp->classes, const_Block);
break;
case LIST:
val = hash_get_t(interp->classes, const_List);
break;
case REAL:
val = hash_get_t(interp->classes, const_Real);
break;
case INTEGER:
val = hash_get_t(interp->classes, const_Integer);
break;
case STRING:
val = hash_get_t(interp->classes, const_String);
break;
case RQUOTE:
val = hash_get_t(interp->classes, const_RQuote);
break;
case EXCEPTION:
val = hash_get_t(interp->classes, const_Exception);
break;
#if 0
case CALLCC:
val = hash_get_t(interp->classes, const_CallCC);
break;
#endif
case DICT:
val = hash_get_t(interp->classes, const_Dict);
break;
case VECTOR:
val = hash_get_t(interp->classes, const_Vector);
break;
case COROUTINE:
val = hash_get_t(interp->classes, const_Coro);
break;
default:
goto error;
}
return val;
error:
msg = new_cell("No such class, '");
cell_add_str(msg, toy_get_type_str(object));
cell_add_str(msg, "'.");
return new_exception(TE_NOOBJECT, cell_get_addr(msg), interp);
}
#define PARAM_BIND(n) { \
val = list_get_item(l); \
var = &(a->array[n]); \
if (GET_TAG(val) == EVAL) { \
if (*env == NULL) { \
*env = new_closure_env(interp); \
} \
val = new_closure(val->u.eval_body, *env, interp->script_id);\
if (GET_TAG(val) == EXCEPTION) {return val;} \
SET_LAZY(val); \
} else { \
val = toy_expand(interp, val, env); \
if (GET_TAG(val) == EXCEPTION) {return val;} \
if (IS_LAZY(var)) {SET_LAZY(val);} \
} \
hash_set_t(args, var, val); \
l = list_next(l); \
}
static Toy_Type*
bind_args(Toy_Interp *interp, Toy_Type *arglist, struct _toy_argspec *aspec,
Toy_Env **env, Hash *args, int fun_paramno, int call_paramno) {
int argpos, i;
Toy_Type *l, *val, *var;
Cell *msg;
l = arglist;
if ((fun_paramno < TAG_MAX_PARAMNO) && (call_paramno < TAG_MAX_PARAMNO)
&& (fun_paramno == call_paramno)) {
Array *a = aspec->posarg_array;
i = 0;
switch (fun_paramno) {
case 6:
PARAM_BIND(i);
i ++;
case 5:
PARAM_BIND(i);
i ++;
case 4:
PARAM_BIND(i);
i ++;
case 3:
PARAM_BIND(i);
i ++;
case 2:
PARAM_BIND(i);
i ++;
case 1:
PARAM_BIND(i);
}
return const_Nil;
}
argpos = 0;
while (l) {
val = list_get_item(l);
if (IS_NAMED_SYM(val)) {
var = hash_get_t(aspec->namedarg, val);
if (NULL == var) goto error3;
l = list_next(l);
if (NULL == l) goto error4;
val = list_get_item(l);
val = toy_expand(interp, val, env);
if (GET_TAG(val) == EXCEPTION) return val;
if (IS_LAZY(var)) {
SET_LAZY(val);
}
hash_set_t(args, var, val);
} else if (IS_SWITCH_SYM(val)) {
Cell *cval;
cval = new_cell(&(cell_get_addr(val->u.symbol.cell))[1]);
cell_add_str(cval, ":");
var = hash_get(aspec->namedarg, cell_get_addr(cval));
if (NULL == var) goto error3;
hash_set_t(args, var, const_int1);
} else {
var = array_get(aspec->posarg_array, argpos);
val = toy_expand(interp, val, env);
if (GET_TAG(val) == EXCEPTION) return val;
if (var && IS_LAZY(var)) {
SET_LAZY(val);
}
if (NULL == var) {
var = hash_get_t(aspec->namedarg, const_Args);
if (NULL == var) goto error1;
if (IS_LIST_NULL(l)) {
hash_set_t(args, var, new_list(NULL));
} else {
val = toy_expand(interp, l, env);
if (GET_TAG(val) == EXCEPTION) return val;
hash_set_t(args, var, val);
}
return const_Nil;
}
hash_set_t(args, var, val);
argpos++;
}
l = list_next(l);
}
if (argpos < aspec->posarg_len) goto error2;
var = hash_get_t(aspec->namedarg, const_Args);
if (NULL != var) {
hash_set_t(args, var, new_list(NULL));
}
return const_Nil;
error1:
msg = new_cell("Too many arguments, required: '");
cell_add_str(msg, to_string(aspec->list));
cell_add_str(msg, "'.");
return new_exception(TE_MANYARGS, cell_get_addr(msg), interp);
error2:
msg = new_cell("Few arguments, required: '");
cell_add_str(msg, to_string(aspec->list));
cell_add_str(msg, "'.");
return new_exception(TE_FEWARGS, cell_get_addr(msg), interp);
error3:
msg = new_cell("No specified named argument, '");
cell_add_str(msg, to_string(val));
cell_add_str(msg, "'.");
return new_exception(TE_NOSPECARGS, cell_get_addr(msg), interp);
error4:
msg = new_cell("No given named argument variable, name: '");
cell_add_str(msg, to_string(val));
cell_add_str(msg, "'.");
return new_exception(TE_NONAMEARG, cell_get_addr(msg), interp);
}
Toy_Type*
eval_closure(Toy_Interp *interp, Toy_Type *closure) {
Toy_Env *env;
Cell *c;
Toy_Type *result;
int func_flag = 0, obj_flag = 0;
if (GET_TAG(closure) != CLOSURE) {
c = new_cell("Not a closure, '");
cell_add_str(c, to_string(closure));
c = new_cell("'.");
return new_exception(TE_NORUNNABLE, cell_get_addr(c), interp);
}
env = closure->u.closure.env;
if (interp->obj_stack[interp->cur_obj_stack] != env->object_env) {
if (0 == toy_push_obj_env(interp, env->object_env)) {
result = new_exception(TE_STACKOVERFLOW, "Object satck overflow.", interp);
goto error_exit;
}
obj_flag = 1;
}
if (interp->func_stack[interp->cur_func_stack]->localvar != env->func_env->localvar) {
if (0 == toy_push_func_env(interp, env->func_env->localvar, env->func_env, env->tobe_bind_val)) {
result = new_exception(TE_STACKOVERFLOW, "Function satck overflow.", interp);
goto error_exit;
}
func_flag = 1;
} else {
interp->func_stack[interp->cur_func_stack]->tobe_bind_val = env->tobe_bind_val;
}
result = toy_eval_script(interp, closure->u.closure.block_body);
error_exit:
if (func_flag) toy_pop_func_env(interp);
if (obj_flag) toy_pop_obj_env(interp);
return result;
}
Toy_Type*
toy_call_init(Toy_Interp *interp, Toy_Type *object, Toy_Type *args) {
Toy_Type *method;
Toy_Obj_Env *obj_env;
Toy_Type *posargs;
Hash *namedargs;
Toy_Type *result = NULL;
method = search_method(interp, object, const_Init);
if (GET_TAG(method) == EXCEPTION) {
if (strcmp(cell_get_addr(method->u.exception.code), TE_NOMETHOD) == 0) {
return const_Nil;
}
return method;
}
obj_env = toy_new_obj_env(interp, object, object);
posargs = args;
namedargs = new_hash(NULL);
switch (GET_TAG(method)) {
case NATIVE:
if (0 == toy_push_obj_env(interp, obj_env)) break;
result = (method->u.native.cfunc)(interp, posargs, namedargs, list_length(posargs));
toy_pop_obj_env(interp);
break;
case FUNC:
{
Hash *local_var;
Toy_Type *r;
Toy_Env *env = NULL;
local_var = new_hash();
r = bind_args(interp, posargs, method->u.func.argspec, &env, local_var,
TAG_MAX_PARAMNO, TAG_MAX_PARAMNO);
if (GET_TAG(r) == EXCEPTION) return r;
if (0 == toy_push_obj_env(interp, obj_env)) {
result = new_exception(TE_STACKOVERFLOW, "Object satck overflow.", interp);
break;
}
if (0 == toy_push_func_env(interp, local_var,
method->u.func.closure->u.closure.env->func_env, NULL)) {
toy_pop_obj_env(interp);
result = new_exception(TE_STACKOVERFLOW, "Function satck overflow.", interp);
break;
}
result = toy_eval_script(interp, method->u.func.closure->u.closure.block_body);
toy_pop_func_env(interp);
toy_pop_obj_env(interp);
break;
}
}
return result;
}
Toy_Type*
toy_call(Toy_Interp *interp, Toy_Type *list) {
Toy_Env *env;
Toy_Type *result;
env = new_closure_env(interp);
result = toy_eval(interp, new_statement(list, interp->trace_info->line), &env);
return result;
}
static Toy_Type*
eval_sig_handl(Toy_Interp *interp, int code) {
Toy_Type *trapdic;
Hash *hash;
Toy_Type *sig;
Toy_Type *block;
trapdic = hash_get_t(interp->globals, const_attrap);
if (NULL == trapdic) return NULL;
hash = (Hash*)trapdic->u.dict;
switch (code) {
case SIGHUP:
sig = const_SIGHUP;
break;
case SIGINT:
sig = const_SIGINT;
break;
case SIGQUIT:
sig = const_SIGQUIT;
break;
case SIGPIPE:
sig = const_SIGPIPE;
break;
case SIGALRM:
sig = const_SIGALRM;
break;
case SIGTERM:
sig = const_SIGTERM;
break;
case SIGURG:
sig = const_SIGURG;
break;
case SIGCHLD:
sig = const_SIGCHLD;
break;
case SIGUSR1:
sig = const_SIGUSR1;