diff options
Diffstat (limited to 'scripts/qapi.py')
| -rw-r--r-- | scripts/qapi.py | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py index 3c33e4e..5bc32e3 100644 --- a/scripts/qapi.py +++ b/scripts/qapi.py @@ -276,8 +276,31 @@ def discriminator_find_enum_define(expr): return find_enum(discriminator_type) +valid_name = re.compile('^[a-zA-Z_][a-zA-Z0-9_.-]*$') +def check_name(expr_info, source, name, allow_optional = False, + enum_member = False): + global valid_name + membername = name + + if not isinstance(name, str): + raise QAPIExprError(expr_info, + "%s requires a string name" % source) + if name.startswith('*'): + membername = name[1:] + if not allow_optional: + raise QAPIExprError(expr_info, + "%s does not allow optional name '%s'" + % (source, name)) + # Enum members can start with a digit, because the generated C + # code always prefixes it with the enum name + if enum_member: + membername = '_' + membername + if not valid_name.match(membername): + raise QAPIExprError(expr_info, + "%s uses invalid name '%s'" % (source, name)) + def check_type(expr_info, source, value, allow_array = False, - allow_dict = False, allow_metas = []): + allow_dict = False, allow_optional = False, allow_metas = []): global all_names orig_value = value @@ -319,18 +342,21 @@ def check_type(expr_info, source, value, allow_array = False, raise QAPIExprError(expr_info, "%s should be a type name" % source) for (key, arg) in value.items(): + check_name(expr_info, "Member of %s" % source, key, + allow_optional=allow_optional) check_type(expr_info, "Member '%s' of %s" % (key, source), arg, - allow_array=True, allow_dict=True, + allow_array=True, allow_dict=True, allow_optional=True, allow_metas=['built-in', 'union', 'alternate', 'struct', 'enum']) def check_command(expr, expr_info): name = expr['command'] check_type(expr_info, "'data' for command '%s'" % name, - expr.get('data'), allow_dict=True, + expr.get('data'), allow_dict=True, allow_optional=True, allow_metas=['union', 'struct']) check_type(expr_info, "'returns' for command '%s'" % name, expr.get('returns'), allow_array=True, allow_dict=True, + allow_optional=True, allow_metas=['built-in', 'union', 'alternate', 'struct', 'enum']) @@ -343,7 +369,7 @@ def check_event(expr, expr_info): raise QAPIExprError(expr_info, "Event name 'MAX' cannot be created") events.append(name) check_type(expr_info, "'data' for event '%s'" % name, - expr.get('data'), allow_dict=True, + expr.get('data'), allow_dict=True, allow_optional=True, allow_metas=['union', 'struct']) if params: for argname, argentry, optional, structured in parse_args(params): @@ -392,12 +418,10 @@ def check_union(expr, expr_info): "Base '%s' is not a valid type" % base) - # The value of member 'discriminator' must name a member of the - # base type. - if not isinstance(discriminator, str): - raise QAPIExprError(expr_info, - "Flat union '%s' discriminator must be a string" - % name) + # The value of member 'discriminator' must name a non-optional + # member of the base type. + check_name(expr_info, "Discriminator of flat union '%s'" % name, + discriminator) discriminator_type = base_fields.get(discriminator) if not discriminator_type: raise QAPIExprError(expr_info, @@ -414,6 +438,8 @@ def check_union(expr, expr_info): # Check every branch for (key, value) in members.items(): + check_name(expr_info, "Member of union '%s'" % name, key) + # Each value must name a known type; furthermore, in flat unions, # branches must be a struct check_type(expr_info, "Member '%s' of union '%s'" % (key, name), @@ -445,6 +471,8 @@ def check_alternate(expr, expr_info): # Check every branch for (key, value) in members.items(): + check_name(expr_info, "Member of alternate '%s'" % name, key) + # Check for conflicts in the generated enum c_key = _generate_enum_string(key) if c_key in values: @@ -475,10 +503,8 @@ def check_enum(expr, expr_info): raise QAPIExprError(expr_info, "Enum '%s' requires an array for 'data'" % name) for member in members: - if not isinstance(member, str): - raise QAPIExprError(expr_info, - "Enum '%s' member '%s' is not a string" - % (name, member)) + check_name(expr_info, "Member of enum '%s'" %name, member, + enum_member=True) key = _generate_enum_string(member) if key in values: raise QAPIExprError(expr_info, @@ -491,7 +517,7 @@ def check_struct(expr, expr_info): members = expr['data'] check_type(expr_info, "'data' for type '%s'" % name, members, - allow_dict=True) + allow_dict=True, allow_optional=True) check_type(expr_info, "'base' for type '%s'" % name, expr.get('base'), allow_metas=['struct']) @@ -682,8 +708,11 @@ def type_name(name): return c_list_type(name[0]) return name -def add_name(name, info, meta, implicit = False): +def add_name(name, info, meta, implicit = False, source = None): global all_names + if not source: + source = "'%s'" % meta + check_name(info, source, name) if name in all_names: raise QAPIExprError(info, "%s '%s' is already defined" @@ -697,7 +726,7 @@ def add_name(name, info, meta, implicit = False): def add_struct(definition, info): global struct_types name = definition['type'] - add_name(name, info, 'struct') + add_name(name, info, 'struct', source="'type'") struct_types.append(definition) def find_struct(name): |