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[CLASSES]: First bits of C++ support 

Now we support classes within classes, i.e. DW_TAG_structure_type entries
within DW_TAG_structure_type, a C++ feature, see the FIXME in the new code.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2006-12-06 11:35:21 -02:00
parent 314d8f65bb
commit c6ad98fc08
1 changed files with 42 additions and 14 deletions
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56
classes.c
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@ -1186,7 +1186,27 @@ static uint64_t attr_numeric(Dwarf_Die *die, unsigned int name)
return 0;
}
static void cu__process_class(Dwarf *dwarf, Dwarf_Die *die, struct class *class)
static void cu__process_class(Dwarf *dwarf, Dwarf_Die *die,
struct class *class, struct cu *cu);
static void cu__create_new_class(Dwarf *dwarf, Dwarf_Die *die, struct cu *cu,
unsigned int tag, Dwarf_Off cu_offset,
const char *name, uint64_t type,
const char *decl_file, int decl_line)
{
Dwarf_Die child;
uint64_t size = attr_numeric(die, DW_AT_byte_size);
struct class *class = class__new(tag, cu_offset, type, name, size,
decl_file, decl_line);
if (class == NULL)
oom("class__new");
if (dwarf_haschildren(die) != 0 && dwarf_child(die, &child) == 0)
cu__process_class(dwarf, &child, class, cu);
cu__add_class(cu, class);
}
static void cu__process_class(Dwarf *dwarf, Dwarf_Die *die, struct class *class,
struct cu *cu)
{
Dwarf_Die child;
Dwarf_Off cu_offset;
@ -1207,6 +1227,21 @@ static void cu__process_class(Dwarf *dwarf, Dwarf_Die *die, struct class *class)
dwarf_decl_line(die, &decl_line);
switch (tag) {
case DW_TAG_structure_type:
/*
* structs within structs: C++
*
* FIXME: For now classes defined within classes are being
* visible externally, in a flat namespace. This ins not so
* much of a problem as every class has a different id, the
* cu_offset, but we need to have namespaces, so that we
* can properly print it in class__print_struct and so that
* we can specify 'pahole QDebug::Stream' as in the example
* that led to supporting classes within classes.
*/
cu__create_new_class(dwarf, die, cu, tag, cu_offset,
name, type, decl_file, decl_line);
goto next_sibling;
case DW_TAG_member: {
struct class_member *member;
@ -1227,10 +1262,10 @@ static void cu__process_class(Dwarf *dwarf, Dwarf_Die *die, struct class *class)
}
if (dwarf_haschildren(die) != 0 && dwarf_child(die, &child) == 0)
cu__process_class(dwarf, &child, class);
cu__process_class(dwarf, &child, class, cu);
next_sibling:
if (dwarf_siblingof(die, die) == 0)
cu__process_class(dwarf, die, class);
cu__process_class(dwarf, die, class, cu);
}
static void cu__process_function(Dwarf *dwarf, Dwarf_Die *die,
@ -1406,18 +1441,11 @@ static void cu__process_die(Dwarf *dwarf, Dwarf_Die *die, struct cu *cu)
cu__add_function(cu, function);
}
goto next_sibling;
default: {
uint64_t size = attr_numeric(die, DW_AT_byte_size);
struct class *class = class__new(tag, cu_offset, type, name,
size, decl_file, decl_line);
if (class == NULL)
oom("class__new");
if (dwarf_haschildren(die) != 0 && dwarf_child(die, &child) == 0)
cu__process_class(dwarf, &child, class);
cu__add_class(cu, class);
default:
cu__create_new_class(dwarf, die, cu, tag, cu_offset,
name, type, decl_file, decl_line);
goto next_sibling;
}
}
children:
if (dwarf_haschildren(die) != 0 && dwarf_child(die, &child) == 0)