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widl: Allow types that reference themselves.

This commit is contained in:
Dan Hipschman 2007-05-24 17:50:02 -07:00 committed by Alexandre Julliard
parent 9c30da77ba
commit 8f7a5d63ec
6 changed files with 111 additions and 21 deletions
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45
dlls/rpcrt4/tests/server.c
View File

@ -154,6 +154,14 @@ s_square_sun(sun_t *sun)
}
}
int
s_test_list_length(test_list_t *list)
{
return (list->t == TL_LIST
? 1 + s_test_list_length(list->u.tail)
: 0);
}
void
s_stop(void)
{
@ -292,6 +300,41 @@ union_tests(void)
ok(square_sun(&sun) == 121.0, "RPC square_sun\n");
}
static test_list_t *
null_list(void)
{
test_list_t *n = HeapAlloc(GetProcessHeap(), 0, sizeof *n);
n->t = TL_NULL;
return n;
}
static test_list_t *
make_list(test_list_t *tail)
{
test_list_t *n = HeapAlloc(GetProcessHeap(), 0, sizeof *n);
n->t = TL_LIST;
n->u.tail = tail;
return n;
}
static void
free_list(test_list_t *list)
{
if (list->t == TL_LIST)
free_list(list->u.tail);
HeapFree(GetProcessHeap(), 0, list);
}
static void
pointer_tests(void)
{
test_list_t *list = make_list(make_list(make_list(null_list())));
ok(test_list_length(list) == 3, "RPC test_list_length\n");
free_list(list);
}
static void
client(const char *test)
{
@ -307,6 +350,7 @@ client(const char *test)
basic_tests();
union_tests();
pointer_tests();
ok(RPC_S_OK == RpcStringFree(&binding), "RpcStringFree\n");
ok(RPC_S_OK == RpcBindingFree(&IServer_IfHandle), "RpcBindingFree\n");
@ -323,6 +367,7 @@ client(const char *test)
basic_tests();
union_tests();
pointer_tests();
stop();
ok(RPC_S_OK == RpcStringFree(&binding), "RpcStringFree\n");

12
dlls/rpcrt4/tests/server.idl
View File

@ -96,5 +96,17 @@ interface IServer
int sum_sp(sp_t *sp);
double square_sun(sun_t *sun);
typedef struct test_list
{
int t;
[switch_is(t)] union
{
[case(TL_NULL)] int x; /* end of list */
[case(TL_LIST)] struct test_list *tail;
} u;
} test_list_t;
int test_list_length(test_list_t *ls);
void stop(void);
}

4
dlls/rpcrt4/tests/server_defines.h
View File

@ -23,3 +23,7 @@
#define SUN_F1 -2
#define SUN_F2 7
#define SUN_PI 399
/* test_list_t case values */
#define TL_NULL 0
#define TL_LIST 1

1
tools/widl/parser.y
View File

@ -1206,6 +1206,7 @@ static type_t *make_type(unsigned char type, type_t *ref)
t->defined = FALSE;
t->written = FALSE;
t->user_types_registered = FALSE;
t->tfswrite = FALSE;
t->typelib_idx = -1;
return t;
}

69
tools/widl/typegen.c
View File

@ -132,6 +132,23 @@ static int is_union(unsigned char type)
}
}
static void update_tfsoff(type_t *type, unsigned int offset, FILE *file)
{
type->typestring_offset = offset;
if (file) type->tfswrite = FALSE;
}
static void guard_rec(type_t *type)
{
/* types that contain references to themselves (like a linked list),
need to be shielded from infinite recursion when writing embedded
types */
if (type->typestring_offset)
type->tfswrite = FALSE;
else
type->typestring_offset = 1;
}
static int is_embedded_complex(const type_t *type)
{
return is_struct(type->type) || is_union(type->type);
@ -789,7 +806,7 @@ static size_t write_pointer_tfs(FILE *file, type_t *type, unsigned int *typestri
unsigned int offset = *typestring_offset;
print_file(file, 0, "/* %d */\n", offset);
type->typestring_offset = offset;
update_tfsoff(type, offset, file);
if (type->ref->typestring_offset)
*typestring_offset += write_nonsimple_pointer(file, type, offset);
@ -799,9 +816,9 @@ static size_t write_pointer_tfs(FILE *file, type_t *type, unsigned int *typestri
return offset;
}
static int has_known_tfs(const type_t *type)
static int processed(const type_t *type)
{
return type->typestring_offset || is_base_type(type->type);
return type->typestring_offset && !type->tfswrite;
}
static size_t write_pointer_description(FILE *file, const attr_list_t *attrs,
@ -827,7 +844,7 @@ static size_t write_pointer_description(FILE *file, const attr_list_t *attrs,
print_file(file, 2, "NdrFcShort(0x%x),\t/* %d */\n", mem_offset, mem_offset);
*typestring_offset += 6;
if (has_known_tfs(type->ref))
if (processed(type->ref) || is_base_type(type->ref->type))
write_pointer_tfs(file, type, typestring_offset);
else
error("write_pointer_description: type format string unknown\n");
@ -1224,6 +1241,8 @@ static size_t write_struct_tfs(FILE *file, type_t *type,
int has_pointers;
unsigned int align = 0;
guard_rec(type);
switch (type->type)
{
case RPC_FC_STRUCT:
@ -1238,7 +1257,7 @@ static size_t write_struct_tfs(FILE *file, type_t *type,
write_embedded_types(file, NULL, type, name, NULL, 0, typestring_offset);
start_offset = *typestring_offset;
type->typestring_offset = start_offset;
update_tfsoff(type, start_offset, file);
if (type->type == RPC_FC_STRUCT)
WRITE_FCTYPE(file, FC_STRUCT, *typestring_offset);
else
@ -1281,7 +1300,7 @@ static size_t write_struct_tfs(FILE *file, type_t *type,
write_embedded_types(file, NULL, type, name, NULL, 0, typestring_offset);
start_offset = *typestring_offset;
type->typestring_offset = start_offset;
update_tfsoff(type, start_offset, file);
if (type->type == RPC_FC_CSTRUCT)
WRITE_FCTYPE(file, FC_CSTRUCT, *typestring_offset);
else
@ -1334,7 +1353,7 @@ static size_t write_struct_tfs(FILE *file, type_t *type,
typestring_offset);
start_offset = *typestring_offset;
type->typestring_offset = start_offset;
update_tfsoff(type, start_offset, file);
WRITE_FCTYPE(file, FC_CVSTRUCT, *typestring_offset);
/* alignment */
print_file(file, 2, "0x%02x,\n", align - 1);
@ -1371,6 +1390,7 @@ static size_t write_struct_tfs(FILE *file, type_t *type,
write_embedded_types(file, NULL, type, name, NULL, 0, typestring_offset);
start_offset = *typestring_offset;
update_tfsoff(type, start_offset, file);
print_file(file, 0, "/* %d */\n", start_offset);
print_file(file, 2, "0x%x,\t/* %s */\n", type->type, string_of_type(type->type));
print_file(file, 2, "0x%x,\t/* %d */\n", align - 1, align - 1);
@ -1457,6 +1477,8 @@ static size_t write_union_tfs(FILE *file, type_t *type, const char *name,
short nodeftype = 0xffff;
var_t *f;
guard_rec(type);
/* use a level of 1 so pointers always get written */
write_embedded_types(file, NULL, type, name, NULL, 1, tfsoff);
@ -1468,7 +1490,7 @@ static size_t write_union_tfs(FILE *file, type_t *type, const char *name,
}
start_offset = *tfsoff;
type->typestring_offset = start_offset;
update_tfsoff(type, start_offset, file);
print_file(file, 0, "/* %d */\n", start_offset);
print_file(file, 2, "NdrFcShort(0x%x),\t/* %d */\n", size, size);
print_file(file, 2, "NdrFcShort(0x%x),\t/* %d */\n", nbranch, nbranch);
@ -1669,11 +1691,11 @@ static size_t write_typeformatstring_var(FILE *file, int indent, const func_t *f
offset, typeformat_offset);
}
static void clear_tfsoff(type_t *type)
static void set_tfswrite(type_t *type, int val)
{
for (;;)
while (type->tfswrite != val)
{
type->typestring_offset = 0;
type->tfswrite = val;
if (type->kind == TKIND_ALIAS)
type = type->orig;
@ -1685,7 +1707,7 @@ static void clear_tfsoff(type_t *type)
{
var_t *v;
LIST_FOR_EACH_ENTRY( v, type->fields, var_t, entry )
clear_tfsoff(v->type);
set_tfswrite(v->type, val);
}
return;
@ -1707,7 +1729,8 @@ static int write_embedded_types(FILE *file, const attr_list_t *attrs, type_t *ty
unsigned int align = 0;
type_t *ft = f->type;
if (ft->type == RPC_FC_NON_ENCAPSULATED_UNION)
if (!ft) continue;
else if (ft->type == RPC_FC_NON_ENCAPSULATED_UNION)
{
expr_t *swexp = get_attrp(f->attrs, ATTR_SWITCHIS);
const char *swname;
@ -1722,7 +1745,7 @@ static int write_embedded_types(FILE *file, const attr_list_t *attrs, type_t *ty
error("%s: only identifiers are supported for switch_is at this time\n",
f->name);
if (ft->typestring_offset == 0)
if (!processed(ft))
write_union_tfs(file, ft, f->name, tfsoff);
swname = swexp->u.sval;
@ -1760,7 +1783,7 @@ static int write_embedded_types(FILE *file, const attr_list_t *attrs, type_t *ty
{
type_t *ref = type->ref;
if (!has_known_tfs(ref))
if (!processed(ref) && !is_base_type(ref->type))
{
if (is_ptr(ref))
{
@ -1791,7 +1814,7 @@ static int write_embedded_types(FILE *file, const attr_list_t *attrs, type_t *ty
return retmask;
}
static void clear_all_tfsoffs(const ifref_list_t *ifaces)
static void set_all_tfswrite(const ifref_list_t *ifaces, int val)
{
const ifref_t * iface;
const func_t *func;
@ -1803,7 +1826,7 @@ static void clear_all_tfsoffs(const ifref_list_t *ifaces)
LIST_FOR_EACH_ENTRY( func, iface->iface->funcs, const func_t, entry )
if (func->args)
LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
clear_tfsoff(var->type);
set_tfswrite(var->type, val);
}
static size_t process_tfs(FILE *file, const ifref_list_t *ifaces, int for_objects)
@ -1827,9 +1850,12 @@ static size_t process_tfs(FILE *file, const ifref_list_t *ifaces, int for_object
current_func = func;
if (func->args)
LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
var->type->typestring_offset
= write_typeformatstring_var(file, 2, func, var->type,
var, &typeformat_offset);
update_tfsoff(
var->type,
write_typeformatstring_var(
file, 2, func, var->type, var,
&typeformat_offset),
file);
}
}
}
@ -1850,7 +1876,7 @@ void write_typeformatstring(FILE *file, const ifref_list_t *ifaces, int for_obje
indent++;
print_file(file, indent, "NdrFcShort(0x0),\n");
clear_all_tfsoffs(ifaces);
set_all_tfswrite(ifaces, TRUE);
process_tfs(file, ifaces, for_objects);
print_file(file, indent, "0x0\n");
@ -2417,6 +2443,7 @@ size_t get_size_procformatstring(const ifref_list_t *ifaces, int for_objects)
size_t get_size_typeformatstring(const ifref_list_t *ifaces, int for_objects)
{
set_all_tfswrite(ifaces, FALSE);
return process_tfs(NULL, ifaces, for_objects);
}

1
tools/widl/widltypes.h
View File

@ -214,6 +214,7 @@ struct _type_t {
unsigned int defined : 1;
unsigned int written : 1;
unsigned int user_types_registered : 1;
unsigned int tfswrite : 1; /* if the type needs to be written to the TFS */
int sign : 2;
};