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more code to implement class

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hyung-hwan 2021-06-01 09:50:35 +00:00
parent 184212b6a0
commit bb72984905
1 changed files with 87 additions and 16 deletions
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99
lib/comp.c
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@ -1007,6 +1007,7 @@ enum
COP_POST_CATCH,
COP_POST_LAMBDA,
COP_POST_CLASS,
COP_POST_AND_EXPR,
COP_POST_OR_EXPR,
@ -1591,7 +1592,6 @@ static HCL_INLINE int compile_else (hcl_t* hcl)
static int check_if_plain_cnode (hcl_t* hcl, hcl_cnode_t* obj, hcl_cnode_t* prev, hcl_cnode_t* container, hcl_synerrnum_t errnum, const hcl_bch_t* bname)
{
obj = HCL_CNODE_CONS_CDR(obj);
if (!obj)
{
hcl_setsynerrbfmt (hcl, errnum, HCL_CNODE_GET_LOC(prev), HCL_NULL, "no %hs in %.*js", bname, HCL_CNODE_GET_TOKLEN(container), HCL_CNODE_GET_TOKPTR(container));
@ -1606,15 +1606,20 @@ static int check_if_plain_cnode (hcl_t* hcl, hcl_cnode_t* obj, hcl_cnode_t* prev
return 0;
}
static int compile_defclass (hcl_t* hcl, hcl_cnode_t* src)
static int compile_class (hcl_t* hcl, hcl_cnode_t* src)
{
/*
(defclass A
| x y | ; instance variables
| ::: x y z | ; class variables <--- how to initialize the class variables???
; everything inside defclass after the variable declarations are normal expressions.
; however, the resolution of some variables will fall under the enclosing class.
(set x 20)
(printf "normal statement ....\n");
(defcmethod new (a b c)
(defun new (a b c)
(printf "%O\n" self) ; self is A
(set obj super.new)
(obj.init a b c)
@ -1626,7 +1631,6 @@ static int compile_defclass (hcl_t* hcl, hcl_cnode_t* src)
(defclass B ::: A ; A is a parent class
| p q |
....
)
@ -1655,47 +1659,110 @@ static int compile_defclass (hcl_t* hcl, hcl_cnode_t* src)
obj = HCL_CNODE_CONS_CDR(obj);
}
printf ("00000000000000\n");
if (obj)
{
/* superclass */
tmp = HCL_CNODE_CONS_CAR(obj);
if (HCL_CNODE_IS_ELLIPSIS(tmp))
if (HCL_CNODE_IS_TRPCOLONS(tmp))
{
obj = HCL_CNODE_CONS_CDR(obj);
/* TODO: multiple subclasses? interfaces? */
if (check_if_plain_cnode(hcl, obj, tmp, cmd, HCL_SYNERR_VARNAME, "superclass name") <= -1) return -1;
superclass_name = HCL_CNODE_CONS_CAR(obj);
if (HCL_CNODE_IS_SYMBOL(superclass_name))
{
if (HCL_CNODE_SYMBOL_SYNCODE(class_name)) /*|| HCL_OBJ_GET_FLAGS_KERNEL(class_name) >= 1) */
if (HCL_CNODE_SYMBOL_SYNCODE(superclass_name)) /*|| HCL_OBJ_GET_FLAGS_KERNEL(superclass_name) >= 1) */
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_BANNEDVARNAME, HCL_CNODE_GET_LOC(class_name), HCL_CNODE_GET_TOK(class_name), "special symbol not to be used as a superclass name");
hcl_setsynerrbfmt (hcl, HCL_SYNERR_BANNEDVARNAME, HCL_CNODE_GET_LOC(superclass_name), HCL_CNODE_GET_TOK(superclass_name), "special symbol not to be used as a superclass name");
return -1;
}
obj = HCL_CNODE_CONS_CDR(obj);
}
else
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_VARNAME, HCL_CNODE_GET_LOC(class_name), HCL_CNODE_GET_TOK(class_name), "non-symbol not to be used as a superclass name");
hcl_setsynerrbfmt (hcl, HCL_SYNERR_VARNAME, HCL_CNODE_GET_LOC(superclass_name), HCL_CNODE_GET_TOK(superclass_name), "non-symbol not to be used as a superclass name");
return -1;
}
}
}
printf ("1111111111111111111\n");
//HCL_DEBUG2 (hcl, ">>> [%js] [%js]\n", HCL_CNODE_GET_TOKPTR(class_name), HCL_CNODE_GET_TOKPTR(superclass_name));
while (obj)
{
/* instance variables and/or class variables */
hcl_cnode_t* vars;
printf ("VLIST....\n");
if (check_if_plain_cnode(hcl, obj, src, cmd, HCL_SYNERR_VARNAME, "variable list") <= -1) return -1;
if (!HCL_CNODE_IS_CONS_CONCODED(obj, HCL_CONCODE_VLIST)) break;
vars = HCL_CNODE_CONS_CAR(obj);
if (!HCL_CNODE_IS_CONS_CONCODED(vars, HCL_CONCODE_VLIST)) break;
printf ("22222222222\n");
obj = HCL_CNODE_CONS_CDR(obj);
}
/* TODO: emit make_class code...
*/
SWITCH_TOP_CFRAME (hcl, COP_COMPILE_OBJECT_LIST, obj); /* 1 */
PUSH_SUBCFRAME (hcl, COP_POST_CLASS, class_name); /* 2*/
return 0;
}
static HCL_INLINE int post_class (hcl_t* hcl)
{
hcl_cframe_t* cf;
cf = GET_TOP_CFRAME(hcl);
HCL_ASSERT (hcl, cf->opcode == COP_POST_CLASS);
#if 0
pop_fnblk (hcl); TODO: do pop class???
if (cf->operand)
{
/* (defun x() ; this x refers to a variable in the outer scope.
* | t1 t2 x |
* (set x 10) ; this x refers to the local variable.
* )
*
* the block has been exited(blk.depth--) before finding 'x' in the outer scope.
*/
hcl_cnode_t* class_name = cf->operand;
hcl_oow_t index;
if (find_temporary_variable_backward(hcl, HCL_CNODE_GET_TOK(defun_name), &index) <= -1)
{
SWITCH_TOP_CFRAME (hcl, COP_EMIT_SET, defun_name);
cf = GET_TOP_CFRAME(hcl);
cf->u.set.var_type = VAR_NAMED;
}
else
{
HCL_ASSERT (hcl, index <= HCL_SMOOI_MAX);
SWITCH_TOP_CFRAME (hcl, COP_EMIT_SET, defun_name);
cf = GET_TOP_CFRAME(hcl);
cf->u.set.var_type = VAR_INDEXED;
cf->u.set.index = index;
}
cf->u.set.pop = 0;
}
else
{
POP_CFRAME (hcl);
}
#else
/* should i make the assignment in POST? or after variable declarations immediately? */
printf ("end of CLASS DEFINITION\n");
POP_CFRAME (hcl);
#endif
return 0;
}
@ -2686,7 +2753,7 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_cnode_t* obj, int nret
break;
case HCL_SYNCODE_DEFCLASS:
if (compile_defclass(hcl, obj) <= -1) return -1;
if (compile_class(hcl, obj) <= -1) return -1;
break;
case HCL_SYNCODE_DEFUN:
@ -3364,7 +3431,7 @@ static int compile_object_list (hcl_t* hcl)
cop == COP_COMPILE_TRY_OBJECT_LIST_TAIL)
{
/* emit POP_STACKTOP before evaluating the second objects
* and onwards. this goes above COP_COMPILE_OBJECT.
* and onwards. this goes above COP_COMPILE_OBJECT.*/
/* TODO: if the previous operators is known to divert execution flow, it may skip this.
* for instance, some 'RETURN" or 'JUMP' operators */
@ -4323,6 +4390,10 @@ int hcl_compile (hcl_t* hcl, hcl_cnode_t* obj, int flags)
if (post_lambda(hcl) <= -1) goto oops;
break;
case COP_POST_CLASS:
if (post_class(hcl) <= -1) goto oops;
break;
case COP_POST_AND_EXPR:
if (post_and_expr(hcl) <= -1) goto oops;
break;