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eval.c
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#include <toy.h>
#include <assert.h>
#include <setjmp.h>
#include <signal.h>
#include <string.h>
#include <errno.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,
Toy_Func_Trace_Info *trace_info);
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) \
&& (! interp->signal_mask_enable)) { \
Toy_Type *sig_result; \
int code = sig_flag; \
sig_flag = 0; \
sig_result = eval_sig_handl(interp, code); \
if (sig_result && (! IS_NIL(sig_result))) { \
result = sig_result; \
} \
}
#ifdef EVAL_STAT
unsigned long long int count_eval_script = 0;
unsigned long long int count_eval = 0;
unsigned long long int count_eval_lazyed = 0;
unsigned long long int count_lazy_expand = 0;
#endif /* EVAL_STAT */
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;
extern volatile int SigAlrm;
result = const_Nil;
volatile int baria_dist;
#ifdef EVAL_STAT
count_eval_script ++;
#endif /* EVAL_STAT */
if ((((unsigned long)(&baria_dist)) - ((unsigned long)cstack_get_safe_addr())) < (MP_PAGESIZE*8)) {
return new_exception(TE_STACKOVERFLOW, L"C stack pointer entered the barrier area.", interp);
}
SIG_ACTION();
l = script->u.statement_list;
if (IS_LIST_NULL(l)) {
static Toy_Type *null_body = NULL;
if (null_body) {
l = null_body;
} else {
l = null_body = new_list(new_statement(new_list(new_symbol(L"false")), 0));
}
}
script_id = interp->script_id;
if (GET_SCRIPT_ID(script) > 0) {
interp->script_id = GET_SCRIPT_ID(script);
}
if (CStack_in_baria) {
/* +++ */
fwprintf(stderr, L"toy_eval_script: detect SOVF(1)\n");
result = new_exception(TE_STACKOVERFLOW, L"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) {
/* +++ */
fwprintf(stderr, L"toy_eval_script: detect SOVF(2)\n");
result = new_exception(TE_STACKOVERFLOW, L"C stack overflow.", interp);
}
if (interp->itimer_enable && SigAlrm && (! interp->signal_mask_enable)) {
SigAlrm = 0;
if ((interp->coroid != 0) && cstack_isalive(interp->cstack_id)) {
if (interp->co_parent) {
if (interp->co_parent->co_calling) {
interp->co_parent->co_value = new_intr(INTR_ITIMER);
#ifdef CORU_USE
coru_yield();
#else
co_resume();
#endif /* CORU_USE */
SigAlrm = 0;
}
}
}
}
SIG_ACTION();
t = GET_TAG(result);
if ((t == CONTROL) || (t == EXCEPTION)) {
if ((t == EXCEPTION) &&
(wcscmp(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_call(interp, body);
interp->last_status = result;
if (GET_TAG(result) == EXCEPTION) {
interp->script_id = script_id;
return result;
}
}
} else {
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, *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;
Toy_Func_Trace_Info *trace_info;
local_var = NULL;
control_goto:
ret = NULL;
obj_env = NULL;
lstack_use = 0;
ostack_use = 0;
arglen = 0;
script_id = -1;
#ifdef EVAL_STAT
count_eval ++;
#endif /* EVAL_STAT */
l = statement->u.statement.item_list;
trace_info = GC_MALLOC(sizeof(Toy_Func_Trace_Info));
ALLOC_SAFE(trace_info);
trace_info->line = statement->u.statement.trace_info->line;
if (interp->cur_func_stack >= 0) {
trace_info->func_name_caller = interp->func_stack[interp->cur_func_stack]->trace_info->func_name;
} else {
trace_info->func_name_caller = new_symbol(L"(unknown)");
}
trace_info->func_name = list_get_item(l);
trace_info->object_name = const_Nil;
trace_info->statement = statement;
interp->trace_info = trace_info;
paramno_hint = GET_PARAMNO(statement);
if (interp->trace && (! interp->debug_in)) {
wchar_t *buff;
char *cbuff;
int sts;
buff = GC_MALLOC(512*sizeof(wchar_t));
ALLOC_SAFE(buff);
swprintf(buff, 512, L"%ls:%d: %ls\n",
get_script_path(interp, interp->script_id),
trace_info->line,
to_string(statement));
buff[511] = 0;
cbuff = to_char(buff);
sts = write(interp->trace_fd, cbuff, strlen(cbuff));
if (-1 == sts) {
/*
fprintf(stderr, "Error occured at trace write, error= %s, fd= %d\n",
strerror(errno),
interp->trace_fd
);
*/
interp->trace = 0;
}
}
if (IS_LIST_NULL(l)) {
ret = const_Nil;
goto exit_eval;
}
first = list_get_item(l);
if (GET_TAG(first) == REF) {
first = toy_resolv_var(interp, first, 1, trace_info);
if (GET_TAG(first) == EXCEPTION) {
ret = first;
goto exit_eval;
}
} else if (GET_TAG(first) == LIST) {
first = toy_expand(interp, first, env, trace_info);
} else if ((GET_TAG(first) == INTEGER) || (GET_TAG(first) == STRING)) {
first = toy_clone(first);
}
self = first;
if (GET_TAG(first) != SYMBOL && GET_TAG(first) != LIST) {
first = toy_expand(interp, first, env, trace_info);
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:
trace_info->func_name = first;
tfirst = toy_resolv_function(interp, first);
if (NULL == tfirst) {
Cell *msg;
msg = new_cell(L"No such function, '");
cell_add_str(msg, to_string(first));
cell_add_str(msg, L"'.");
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(L"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, trace_info);
if (GET_TAG(method) == EXCEPTION) {
ret = first;
goto exit_eval;
}
}
if (GET_TAG(method) != SYMBOL) {
msg = new_cell(L"Method is not a symbol, '");
cell_add_str(msg, to_string(method));
cell_add_str(msg, L"'.");
ret = new_exception(TE_BADMETHOD, cell_get_addr(msg), interp);
goto exit_eval;
}
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);
trace_info->object_name = first;
first = method;
if (paramno_hint != TAG_MAX_PARAMNO) {
paramno_hint --;
}
}
if (interp->debug && (! interp->debug_in)) {
Toy_Type *cmd;
interp->debug_in = 1;
cmd = new_list(const_debug_hook);
list_append(cmd, new_integer_si(trace_info->line));
if (trace_info->object_name) {
list_append(cmd, trace_info->object_name);
} else {
list_append(cmd, const_Nil);
}
if (trace_info->func_name) {
list_append(cmd, trace_info->func_name_caller);
} else {
list_append(cmd, const_Nil);
}
if (trace_info->statement) {
list_append(cmd, trace_info->statement);
} else {
list_append(cmd, const_Nil);
}
list_append(cmd, new_string_str((get_script_path(interp, interp->script_id))));
list_append(cmd, new_dict(interp->func_stack[interp->cur_func_stack]->localvar));
list_append(cmd, new_integer_si(interp->cur_func_stack));
list_append(cmd, interp->func_stack[interp->cur_func_stack]->trace_info->func_name);
toy_eval_script(interp, new_script(new_list(new_statement(cmd, trace_info->line))));
interp->debug_in = 0;
}
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, L":");
hash_set(namedargs, cell_get_addr(ckey), const_T);
} else if (IS_NAMED_SYM(arg)) {
name = arg;
l = list_next(l);
if (NULL == l) {
msg = new_cell(L"No given named argument variable, name: '");
cell_add_str(msg, cell_get_addr(name->u.symbol.cell));
cell_add_str(msg, L"'.");
ret = new_exception(TE_NONAMEARG, cell_get_addr(msg), interp);
goto exit_eval;
}
arg = toy_expand(interp, list_get_item(l), env, trace_info);
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, trace_info);
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, L"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, trace_info);
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, L"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, trace_info)) {
ret = new_exception(TE_STACKOVERFLOW, L"Function satck overflow.", interp);
goto exit_eval;
}
lstack_use = 1;
interp->current_func = first;
ret = toy_eval_script(interp, first->u.func.closure->u.closure.block_body);
if ((GET_TAG(ret) == CONTROL) && (ret->u.control.code == CTRL_RETURN)) {
ret = ret->u.control.ret_value;
}
goto exit_eval;
default:
ret = new_exception(TE_NORUNNABLE, L"No runnable object.", 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), 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, Toy_Func_Trace_Info *trace_info) {
switch (GET_TAG(obj)) {
case REF:
return toy_resolv_var(interp, obj, 1, trace_info);
case LIST:
return toy_expand_list(interp, obj, env, trace_info);
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 *st, *stl, *result;
if (GET_TAG(obj->u.getmacro.obj) == SYMBOL) {
return new_exception(TE_SYNTAX, L"Bad left item at GETMACRO.", interp);
}
stl = st = new_list(obj->u.getmacro.obj);
st = list_append(st, const_Get);
st = list_append(st, obj->u.getmacro.para);
result = toy_eval(interp, new_statement(stl, trace_info->line), env);
return result;
}
case INITMACRO:
{
Toy_Type *st, *stl, *result;
stl = st = new_list(const_new);
st = list_append(st, obj->u.initmacro.class);
st = list_append(st, const_init);
st = list_append(st, obj->u.initmacro.param);
result = toy_eval(interp, new_statement(stl, trace_info->line), env);
return result;
}
default:
return obj;
}
}
Toy_Type*
toy_expand_list(Toy_Interp* interp, Toy_Type* list, Toy_Env** env, Toy_Func_Trace_Info *trace_info) {
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, trace_info);
}
list_set_cdr(nlist, a);
break;
}
a = toy_expand(interp, list_get_item(sl), env, trace_info);
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, Toy_Func_Trace_Info *trace_info) {
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)) {
#ifdef EVAL_STAT
count_lazy_expand ++;
#endif /* EVAL_STAT */
val = eval_closure(interp, val, trace_info);
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)) {
#ifdef EVAL_STAT
count_lazy_expand ++;
#endif /* EVAL_STAT */
val = eval_closure(interp, val, trace_info);
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)) {
#ifdef EVAL_STAT
count_lazy_expand ++;
#endif /* EVAL_STAT */
val = eval_closure(interp, val, trace_info);
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)) {
#ifdef EVAL_STAT
count_lazy_expand ++;
#endif /* EVAL_STAT */
val = eval_closure(interp, val, trace_info);
hash_set_t(h, var, val);
}
return val;
}
c = new_cell(L"No such variable, '");
cell_add_str(c, cell_get_addr(var->u.ref.cell));
cell_add_str(c, L"'.");
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*
set_closure_var(Toy_Interp *interp, Toy_Type *var, Toy_Type *val) {
Hash *h;
Toy_Func_Env *upenv;
Toy_Type *v;
upenv = interp->func_stack[interp->cur_func_stack]->upstack;
while (upenv) {
h = upenv->localvar;
if (h) {
v = hash_get_t(h, var);
if (NULL != v) {
if (NULL != val) {
hash_set_t(h, var, val);
return val;
} else {
return v;
}
}
}
upenv = upenv->upstack;
}
return 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:
h = object->u.object.slots;
m = hash_get_t(h, method);
if (m) {
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) {
return m;
}
l = list_next(l);
a = list_get_item(l);
}
goto error;
}
default:
return toy_resolv_object(interp, object);
}
error:
msg = new_cell(L"No such method, '");
cell_add_str(msg, to_string(object));
cell_add_str(msg, L"::");
cell_add_str(msg, to_string(method));
cell_add_str(msg, L"'.");
return new_exception(TE_NOMETHOD, cell_get_addr(msg), interp);
error2:
msg = new_cell(L"No such delegate class, '");
cell_add_str(msg, cell_get_addr(a->u.symbol.cell));
cell_add_str(msg, L"'.");
return new_exception(TE_NODELEGATE, cell_get_addr(msg), interp);
}
extern Toy_Type *Resolv_Object_ptr[__TYPE_LAST__];
Toy_Type*
toy_resolv_object(Toy_Interp *interp, Toy_Type *object) {
Toy_Type *val;
Cell *msg;
val = Resolv_Object_ptr[GET_TAG(object)];
if (! val) goto error;
return val;
error:
msg = new_cell(L"No such class, '");
cell_add_str(msg, toy_get_type_str(object));
cell_add_str(msg, L"'.");
return new_exception(TE_NOOBJECT, cell_get_addr(msg), interp);
}
#ifdef EVAL_STAT
#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); \
count_eval_lazyed ++; \
} else { \
val = toy_expand(interp, val, env, trace_info); \
if (GET_TAG(val) == EXCEPTION) {return val;} \
if (IS_LAZY(var)) { \
SET_LAZY(val); \
count_eval_lazyed ++; \
} \
} \
hash_set_t(args, var, toy_clone(val)); \
l = list_next(l); \
}
#else
#ifdef NO_LAZY
#define PARAM_BIND(n) { \
val = list_get_item(l); \
var = &(a->array[n]); \
if (GET_TAG(val) == EVAL) { \
val = toy_expand(interp, val, env, trace_info); \
if (GET_TAG(val) == EXCEPTION) {return val;} \
} else { \
val = toy_expand(interp, val, env, trace_info); \
if (GET_TAG(val) == EXCEPTION) {return val;} \
if (IS_LAZY(var)) { \
SET_LAZY(val); \
} \
} \
hash_set_t(args, var, toy_clone(val)); \
l = list_next(l); \
}
#else
#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, trace_info); \
if (GET_TAG(val) == EXCEPTION) {return val;} \
if (IS_LAZY(var)) { \
SET_LAZY(val); \
} \
} \
hash_set_t(args, var, toy_clone(val)); \
l = list_next(l); \
}
#endif /* NO_LAZY */
#endif /* EVAL_STAT */
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, Toy_Func_Trace_Info *trace_info) {
int argpos, i;
Toy_Type *l, *val, *var;
Cell *msg;
l = arglist;
if ((aspec->posarg_len == 1) && (hash_get_length(aspec->namedarg) == 0)) {
var = array_get(aspec->posarg_array, 0);
if (wcscmp(cell_get_addr(var->u.symbol.cell), L"*") == 0) {
Toy_Type *result, *last;
last = result = new_list(NULL);
while (l) {
val = toy_expand(interp, list_get_item(l), env, trace_info);
if (GET_TAG(val) == EXCEPTION) return val;
last = list_append(last, val);
l = list_next(l);
}
hash_set_t(args, const_ast, toy_clone(result));
return const_Nil;
}
}
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, trace_info);
if (GET_TAG(val) == EXCEPTION) return val;
if (IS_LAZY(var)) {
SET_LAZY(val);
}
hash_set_t(args, var, toy_clone(val));
} else if (IS_SWITCH_SYM(val)) {
Cell *cval;
cval = new_cell(&(cell_get_addr(val->u.symbol.cell))[1]);
cell_add_str(cval, L":");
var = hash_get(aspec->namedarg, cell_get_addr(cval));
if (NULL == var) goto error3;
hash_set_t(args, var, toy_clone(const_T));
} else {
var = array_get(aspec->posarg_array, argpos);
val = toy_expand(interp, val, env, trace_info);
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, trace_info);
if (GET_TAG(val) == EXCEPTION) return val;
hash_set_t(args, var, toy_clone(val));
}
return const_Nil;
}
hash_set_t(args, var, toy_clone(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(L"Too many arguments, required: '");
cell_add_str(msg, to_string(aspec->list));
cell_add_str(msg, L"'.");
return new_exception(TE_MANYARGS, cell_get_addr(msg), interp);
error2:
msg = new_cell(L"Few arguments, required: '");
cell_add_str(msg, to_string(aspec->list));
cell_add_str(msg, L"'.");
return new_exception(TE_FEWARGS, cell_get_addr(msg), interp);
error3:
msg = new_cell(L"No specified named argument, '");
cell_add_str(msg, to_string(val));
cell_add_str(msg, L"'.");
return new_exception(TE_NOSPECARGS, cell_get_addr(msg), interp);
error4:
msg = new_cell(L"No given named argument variable, name: '");
cell_add_str(msg, to_string(val));
cell_add_str(msg, L"'.");
return new_exception(TE_NONAMEARG, cell_get_addr(msg), interp);
}
Toy_Type*