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renamed return-from-home to revert
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treated return and revert as keywords
This commit is contained in:
hyung-hwan 2024-08-22 18:10:41 +09:00
parent 191c123cb6
commit 229d3b1f29
6 changed files with 45 additions and 20 deletions
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34
lib/comp.c
View File

@ -3172,7 +3172,9 @@ static int compile_return (hcl_t* hcl, hcl_cnode_t* src, int ret_from_home)
HCL_ASSERT (hcl, HCL_CNODE_IS_CONS(src));
HCL_ASSERT (hcl, HCL_CNODE_IS_SYMBOL_SYNCODED(HCL_CNODE_CONS_CAR(src), HCL_SYNCODE_RETURN) ||
HCL_CNODE_IS_SYMBOL_SYNCODED(HCL_CNODE_CONS_CAR(src), HCL_SYNCODE_RETURN_FROM_HOME));
HCL_CNODE_IS_SYMBOL_SYNCODED(HCL_CNODE_CONS_CAR(src), HCL_SYNCODE_REVERT) ||
HCL_CNODE_IS_TYPED(HCL_CNODE_CONS_CAR(src), HCL_CNODE_RETURN) ||
HCL_CNODE_IS_TYPED(HCL_CNODE_CONS_CAR(src), HCL_CNODE_REVERT));
fbi = &hcl->c->fnblk.info[hcl->c->fnblk.depth];
obj = HCL_CNODE_CONS_CDR(src);
@ -3952,6 +3954,16 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_cnode_t* obj, int nret
case HCL_CNODE_WHILE:
if (compile_while(hcl, obj, COP_POST_WHILE_COND) <= -1) return -1;
goto done;
case HCL_CNODE_RETURN:
/* (return 10)
* (return (+ 10 20)) */
if (compile_return(hcl, obj, 0) <= -1) return -1;
goto done;
case HCL_CNODE_REVERT:
if (compile_return(hcl, obj, 1) <= -1) return -1;
goto done;
}
if (HCL_CNODE_IS_SYMBOL(car) && (syncode = HCL_CNODE_SYMBOL_SYNCODE(car)))
@ -4023,6 +4035,16 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_cnode_t* obj, int nret
if (compile_plus(hcl, obj) <= -1) return -1;
break;
case HCL_SYNCODE_RETURN:
/* (return 10)
* (return (+ 10 20)) */
if (compile_return(hcl, obj, 0) <= -1) return -1;
break;
case HCL_SYNCODE_REVERT:
if (compile_return(hcl, obj, 1) <= -1) return -1;
break;
case HCL_SYNCODE_SET:
/* (set x 10)
* (set x (fun (x y) (+ x y)) */
@ -4034,16 +4056,6 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_cnode_t* obj, int nret
if (compile_set_r(hcl, obj) <= -1) return -1;
break;
case HCL_SYNCODE_RETURN:
/* (return 10)
* (return (+ 10 20)) */
if (compile_return(hcl, obj, 0) <= -1) return -1;
break;
case HCL_SYNCODE_RETURN_FROM_HOME:
if (compile_return(hcl, obj, 1) <= -1) return -1;
break;
case HCL_SYNCODE_THROW:
if (compile_throw(hcl, obj) <= -1) return -1;
break;

5
lib/gc.c
View File

@ -47,13 +47,12 @@ static struct
{ 2, { 'd','o' }, HCL_SYNCODE_DO, HCL_OFFSETOF(hcl_t,s_do) },
{ 4, { 'e','l','i','f' }, HCL_SYNCODE_ELIF, HCL_OFFSETOF(hcl_t,s_elif) },
{ 4, { 'e','l','s','e' }, HCL_SYNCODE_ELSE, HCL_OFFSETOF(hcl_t,s_else) },
{ 3, { 'f','u','n' }, HCL_SYNCODE_FUN, HCL_OFFSETOF(hcl_t,s_fun) },
{ 3, { 'f','u','n' }, HCL_SYNCODE_FUN, HCL_OFFSETOF(hcl_t,s_fun) },
{ 2, { 'i','f' }, HCL_SYNCODE_IF, HCL_OFFSETOF(hcl_t,s_if) },
{ 2, { 'o','r' }, HCL_SYNCODE_OR, HCL_OFFSETOF(hcl_t,s_or) },
{ 4, { 'p','l','u','s' }, HCL_SYNCODE_PLUS, HCL_OFFSETOF(hcl_t,s_plus) },
{ 6, { 'r','e','t','u','r','n'}, HCL_SYNCODE_RETURN, HCL_OFFSETOF(hcl_t,s_return) },
{ 16, { 'r','e','t','u','r','n','-','f','r','o','m','-','h','o','m','e'},
HCL_SYNCODE_RETURN_FROM_HOME, HCL_OFFSETOF(hcl_t,s_return_from_home) },
{ 6, { 'r','e','v','e','r','t'}, HCL_SYNCODE_REVERT, HCL_OFFSETOF(hcl_t,s_revert) },
{ 3, { 's','e','t' }, HCL_SYNCODE_SET, HCL_OFFSETOF(hcl_t,s_set) },
{ 5, { 's','e','t','-','r' }, HCL_SYNCODE_SET_R, HCL_OFFSETOF(hcl_t,s_set_r) },
{ 5, { 't','h','r','o','w' }, HCL_SYNCODE_THROW, HCL_OFFSETOF(hcl_t,s_throw) },

4
lib/hcl-prv.h
View File

@ -313,6 +313,8 @@ enum hcl_tok_type_t
HCL_TOK_CONTINUE,
HCL_TOK_UNTIL,
HCL_TOK_WHILE,
HCL_TOK_RETURN,
HCL_TOK_REVERT,
HCL_TOK_BINOP,
HCL_TOK_IDENT,
@ -407,6 +409,8 @@ enum hcl_cnode_type_t
HCL_CNODE_CONTINUE,
HCL_CNODE_UNTIL,
HCL_CNODE_WHILE,
HCL_CNODE_RETURN,
HCL_CNODE_REVERT,
HCL_CNODE_ELLIPSIS,
HCL_CNODE_TRPCOLONS,

6
lib/hcl.h
View File

@ -1681,7 +1681,7 @@ struct hcl_t
hcl_oop_t s_or; /* symbol */
hcl_oop_t s_plus; /* symbol */
hcl_oop_t s_return; /* symbol */
hcl_oop_t s_return_from_home; /* symbol */
hcl_oop_t s_revert; /* symbol */
hcl_oop_t s_set; /* symbol */
hcl_oop_t s_set_r; /* symbol */
hcl_oop_t s_throw; /* symbol */
@ -2047,8 +2047,8 @@ enum hcl_syncode_t
HCL_SYNCODE_FUN,
HCL_SYNCODE_OR,
HCL_SYNCODE_PLUS,
HCL_SYNCODE_RETURN,
HCL_SYNCODE_RETURN_FROM_HOME,
HCL_SYNCODE_RETURN, /* local return. return from the current context. */
HCL_SYNCODE_REVERT, /* non-local return. return from home context */
HCL_SYNCODE_SET,
HCL_SYNCODE_SET_R,
HCL_SYNCODE_THROW,

14
lib/read.c
View File

@ -70,6 +70,8 @@ static struct voca_t
{ 8, { 'c','o','n','t','i','n','u','e' } },
{ 5, { 'u','n','t','i','l' } },
{ 5, { 'w','h','i','l','e' } },
{ 6, { 'r','e','t','u','r','n' } },
{ 6, { 'r','e','v','e','r','t' } },
{ 3, { 's','e','t' } },
{ 5, { 's','e','t','-','r' } },
@ -125,6 +127,8 @@ enum voca_id_t
VOCA_KW_CONTINUE,
VOCA_KW_UNTIL,
VOCA_KW_WHILE,
VOCA_KW_RETURN,
VOCA_KW_REVERT,
VOCA_SYM_SET,
VOCA_SYM_SET_R,
@ -446,7 +450,9 @@ static hcl_tok_type_t classify_ident_token (hcl_t* hcl, const hcl_oocs_t* v)
{ VOCA_KW_BREAK, HCL_TOK_BREAK },
{ VOCA_KW_CONTINUE, HCL_TOK_CONTINUE },
{ VOCA_KW_UNTIL, HCL_TOK_UNTIL },
{ VOCA_KW_WHILE, HCL_TOK_WHILE }
{ VOCA_KW_WHILE, HCL_TOK_WHILE },
{ VOCA_KW_RETURN, HCL_TOK_RETURN },
{ VOCA_KW_REVERT, HCL_TOK_REVERT }
};
for (i = 0; i < HCL_COUNTOF(tab); i++)
@ -1275,7 +1281,9 @@ static hcl_cnode_type_t kw_to_cnode_type (int tok_type)
HCL_CNODE_BREAK,
HCL_CNODE_CONTINUE,
HCL_CNODE_UNTIL,
HCL_CNODE_WHILE
HCL_CNODE_WHILE,
HCL_CNODE_RETURN,
HCL_CNODE_REVERT
};
return mapping[tok_type - HCL_TOK_NIL];
@ -1695,6 +1703,8 @@ static int feed_process_token (hcl_t* hcl)
case HCL_TOK_CONTINUE:
case HCL_TOK_UNTIL:
case HCL_TOK_WHILE:
case HCL_TOK_RETURN:
case HCL_TOK_REVERT:
frd->obj = hcl_makecnode(hcl, kw_to_cnode_type(TOKEN_TYPE(hcl)), 0, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
goto auto_xlist;

2
t/ret-01.hcl
View File

@ -8,7 +8,7 @@ defun repeat(n f) {
defun test-non-local-ret-1(k) {
repeat 10 (fun() {
set k (+ k 2);
if (= k 28) { return-from-home k };
if (= k 28) { revert k };
});
return k;