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qapi: Drop support for inline nested types

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A future patch will be using a 'name':{dictionary} entry in the
QAPI schema to specify a default value for an optional argument
(see previous commit messages for more details why); but existing
use of inline nested structs conflicts with that goal. Now that
all commands have been changed to avoid inline nested structs,
nuke support for them, and turn it into a hard error. Update the
testsuite to reflect tighter parsing rules.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake 2015-05-04 09:05:33 -06:00 committed by Markus Armbruster
parent 9fa02cd194
commit 6b5abc7df7
14 changed files with 27 additions and 69 deletions
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8
scripts/qapi-commands.py
View File

@ -28,7 +28,7 @@ def type_visitor(name):
def generate_command_decl(name, args, ret_type):
arglist=""
for argname, argtype, optional, structured in parse_args(args):
for argname, argtype, optional in parse_args(args):
argtype = c_type(argtype, is_param=True)
if optional:
arglist += "bool has_%s, " % c_var(argname)
@ -53,7 +53,7 @@ def gen_sync_call(name, args, ret_type, indent=0):
retval=""
if ret_type:
retval = "retval = "
for argname, argtype, optional, structured in parse_args(args):
for argname, argtype, optional in parse_args(args):
if optional:
arglist += "has_%s, " % c_var(argname)
arglist += "%s, " % (c_var(argname))
@ -96,7 +96,7 @@ Visitor *v;
def gen_visitor_input_vars_decl(args):
ret = ""
push_indent()
for argname, argtype, optional, structured in parse_args(args):
for argname, argtype, optional in parse_args(args):
if optional:
ret += mcgen('''
bool has_%(argname)s = false;
@ -139,7 +139,7 @@ v = qapi_dealloc_get_visitor(md);
v = qmp_input_get_visitor(mi);
''')
for argname, argtype, optional, structured in parse_args(args):
for argname, argtype, optional in parse_args(args):
if optional:
ret += mcgen('''
visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);

4
scripts/qapi-event.py
View File

@ -21,7 +21,7 @@ def _generate_event_api_name(event_name, params):
l = len(api_name)
if params:
for argname, argentry, optional, structured in parse_args(params):
for argname, argentry, optional in parse_args(params):
if optional:
api_name += "bool has_%s,\n" % c_var(argname)
api_name += "".ljust(l)
@ -93,7 +93,7 @@ def generate_event_implement(api_name, event_name, params):
""",
event_name = event_name)
for argname, argentry, optional, structured in parse_args(params):
for argname, argentry, optional in parse_args(params):
if optional:
ret += mcgen("""
if (has_%(var)s) {

9
scripts/qapi-types.py
View File

@ -63,18 +63,13 @@ typedef struct %(name)sList
def generate_struct_fields(members):
ret = ''
for argname, argentry, optional, structured in parse_args(members):
for argname, argentry, optional in parse_args(members):
if optional:
ret += mcgen('''
bool has_%(c_name)s;
''',
c_name=c_var(argname))
if structured:
push_indent()
ret += generate_struct({ "field": argname, "data": argentry})
pop_indent()
else:
ret += mcgen('''
ret += mcgen('''
%(c_type)s %(c_name)s;
''',
c_type=c_type(argentry), c_name=c_var(argname))

37
scripts/qapi-visit.py
View File

@ -51,27 +51,6 @@ def generate_visit_struct_fields(name, field_prefix, fn_prefix, members, base =
else:
full_name = "%s_%s" % (name, fn_prefix)
for argname, argentry, optional, structured in parse_args(members):
if structured:
if not fn_prefix:
nested_fn_prefix = argname
else:
nested_fn_prefix = "%s_%s" % (fn_prefix, argname)
nested_field_prefix = "%s%s." % (field_prefix, argname)
ret += generate_visit_struct_fields(name, nested_field_prefix,
nested_fn_prefix, argentry)
ret += mcgen('''
static void visit_type_%(full_name)s_field_%(c_name)s(Visitor *m, %(name)s **obj, Error **errp)
{
''',
name=name, full_name=full_name, c_name=c_var(argname))
ret += generate_visit_struct_body(full_name, argname, argentry)
ret += mcgen('''
}
''')
if base:
ret += generate_visit_implicit_struct(base)
@ -94,7 +73,7 @@ if (err) {
c_prefix=c_var(field_prefix),
type=type_name(base), c_name=c_var('base'))
for argname, argentry, optional, structured in parse_args(members):
for argname, argentry, optional in parse_args(members):
if optional:
ret += mcgen('''
visit_optional(m, &(*obj)->%(c_prefix)shas_%(c_name)s, "%(name)s", &err);
@ -104,18 +83,12 @@ if (!err && (*obj)->%(prefix)shas_%(c_name)s) {
c_name=c_var(argname), name=argname)
push_indent()
if structured:
ret += mcgen('''
visit_type_%(full_name)s_field_%(c_name)s(m, obj, &err);
''',
full_name=full_name, c_name=c_var(argname))
else:
ret += mcgen('''
ret += mcgen('''
visit_type_%(type)s(m, &(*obj)->%(c_prefix)s%(c_name)s, "%(name)s", &err);
''',
c_prefix=c_var(field_prefix), prefix=field_prefix,
type=type_name(argentry), c_name=c_var(argname),
name=argname)
c_prefix=c_var(field_prefix), prefix=field_prefix,
type=type_name(argentry), c_name=c_var(argname),
name=argname)
if optional:
pop_indent()

20
scripts/qapi.py
View File

@ -373,10 +373,12 @@ def check_type(expr_info, source, value, allow_array = False,
for (key, arg) in value.items():
check_name(expr_info, "Member of %s" % source, key,
allow_optional=allow_optional)
# Todo: allow dictionaries to represent default values of
# an optional argument.
check_type(expr_info, "Member '%s' of %s" % (key, source), arg,
allow_array=True, allow_dict=True, allow_optional=True,
allow_array=True, allow_star=allow_star,
allow_metas=['built-in', 'union', 'alternate', 'struct',
'enum'], allow_star=allow_star)
'enum'])
def check_command(expr, expr_info):
name = expr['command']
@ -404,13 +406,6 @@ def check_event(expr, expr_info):
check_type(expr_info, "'data' for event '%s'" % name,
expr.get('data'), allow_dict=True, allow_optional=True,
allow_metas=['union', 'struct'])
if params:
for argname, argentry, optional, structured in parse_args(params):
if structured:
raise QAPIExprError(expr_info,
"Nested structure define in event is not "
"supported, event '%s', argname '%s'"
% (expr['event'], argname))
def check_union(expr, expr_info):
name = expr['union']
@ -671,13 +666,12 @@ def parse_args(typeinfo):
argname = member
argentry = typeinfo[member]
optional = False
structured = False
if member.startswith('*'):
argname = member[1:]
optional = True
if isinstance(argentry, OrderedDict):
structured = True
yield (argname, argentry, optional, structured)
# Todo: allow argentry to be OrderedDict, for providing the
# value of an optional argument.
yield (argname, argentry, optional)
def de_camel_case(name):
new_name = ''

2
tests/qapi-schema/event-nest-struct.err
View File

@ -1 +1 @@
tests/qapi-schema/event-nest-struct.json:1: Nested structure define in event is not supported, event 'EVENT_A', argname 'a'
tests/qapi-schema/event-nest-struct.json:1: Member 'a' of 'data' for event 'EVENT_A' should be a type name

1
tests/qapi-schema/nested-struct-data.err
View File

@ -0,0 +1 @@
tests/qapi-schema/nested-struct-data.json:2: Member 'a' of 'data' for command 'foo' should be a type name

2
tests/qapi-schema/nested-struct-data.exit
View File

@ -1 +1 @@
0
1

2
tests/qapi-schema/nested-struct-data.json
View File

@ -1,4 +1,4 @@
# FIXME: inline subtypes collide with our desired future use of defaults
# inline subtypes collide with our desired future use of defaults
{ 'command': 'foo',
'data': { 'a' : { 'string' : 'str', 'integer': 'int' }, 'b' : 'str' },
'returns': {} }

3
tests/qapi-schema/nested-struct-data.out
View File

@ -1,3 +0,0 @@
[OrderedDict([('command', 'foo'), ('data', OrderedDict([('a', OrderedDict([('string', 'str'), ('integer', 'int')])), ('b', 'str')])), ('returns', OrderedDict())])]
[]
[]

1
tests/qapi-schema/nested-struct-returns.err
View File

@ -0,0 +1 @@
tests/qapi-schema/nested-struct-returns.json:2: Member 'a' of 'returns' for command 'foo' should be a type name

2
tests/qapi-schema/nested-struct-returns.exit
View File

@ -1 +1 @@
0
1

2
tests/qapi-schema/nested-struct-returns.json
View File

@ -1,3 +1,3 @@
# FIXME: inline subtypes collide with our desired future use of defaults
# inline subtypes collide with our desired future use of defaults
{ 'command': 'foo',
'returns': { 'a' : { 'string' : 'str', 'integer': 'int' }, 'b' : 'str' } }

3
tests/qapi-schema/nested-struct-returns.out
View File

@ -1,3 +0,0 @@
[OrderedDict([('command', 'foo'), ('returns', OrderedDict([('a', OrderedDict([('string', 'str'), ('integer', 'int')])), ('b', 'str')]))])]
[]
[]