qapi: Clean up qapi.py per pep8
Silence pep8, and make pylint a bit happier. Just style cleanups, plus killing a useless comment in camel_to_upper(); no semantic changes. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1443565276-4535-5-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake
Markus Armbruster
parent
59b0054265
commit
437db2549b
@ -22,6 +22,7 @@
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from UserDict import DictMixin
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class OrderedDict(dict, DictMixin):
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def __init__(self, *args, **kwds):
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@ -117,7 +118,7 @@ class OrderedDict(dict, DictMixin):
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if isinstance(other, OrderedDict):
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if len(self) != len(other):
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return False
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for p, q in zip(self.items(), other.items()):
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for p, q in zip(self.items(), other.items()):
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if p != q:
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return False
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return True
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163
scripts/qapi.py
163
scripts/qapi.py
@ -71,6 +71,7 @@ all_names = {}
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# Parsing the schema into expressions
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#
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def error_path(parent):
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res = ""
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while parent:
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@ -79,6 +80,7 @@ def error_path(parent):
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parent = parent['parent']
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return res
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class QAPISchemaError(Exception):
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def __init__(self, schema, msg):
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Exception.__init__(self)
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@ -97,6 +99,7 @@ class QAPISchemaError(Exception):
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return error_path(self.info) + \
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"%s:%d:%d: %s" % (self.fname, self.line, self.col, self.msg)
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class QAPIExprError(Exception):
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def __init__(self, expr_info, msg):
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Exception.__init__(self)
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@ -107,9 +110,10 @@ class QAPIExprError(Exception):
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return error_path(self.info['parent']) + \
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"%s:%d: %s" % (self.info['file'], self.info['line'], self.msg)
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class QAPISchemaParser(object):
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def __init__(self, fp, previously_included = [], incl_info = None):
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def __init__(self, fp, previously_included=[], incl_info=None):
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abs_fname = os.path.abspath(fp.name)
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fname = fp.name
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self.fname = fname
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@ -124,13 +128,14 @@ class QAPISchemaParser(object):
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self.exprs = []
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self.accept()
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while self.tok != None:
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while self.tok is not None:
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expr_info = {'file': fname, 'line': self.line,
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'parent': self.incl_info}
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expr = self.get_expr(False)
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if isinstance(expr, dict) and "include" in expr:
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if len(expr) != 1:
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raise QAPIExprError(expr_info, "Invalid 'include' directive")
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raise QAPIExprError(expr_info,
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"Invalid 'include' directive")
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include = expr["include"]
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if not isinstance(include, str):
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raise QAPIExprError(expr_info,
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@ -193,7 +198,7 @@ class QAPISchemaParser(object):
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string += '\t'
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elif ch == 'u':
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value = 0
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for x in range(0, 4):
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for _ in range(0, 4):
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ch = self.src[self.cursor]
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self.cursor += 1
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if ch not in "0123456789abcdefABCDEF":
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@ -215,7 +220,7 @@ class QAPISchemaParser(object):
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string += ch
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else:
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raise QAPISchemaError(self,
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"Unknown escape \\%s" %ch)
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"Unknown escape \\%s" % ch)
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esc = False
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elif ch == "\\":
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esc = True
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@ -275,7 +280,7 @@ class QAPISchemaParser(object):
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if self.tok == ']':
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self.accept()
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return expr
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if not self.tok in "{['tfn":
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if self.tok not in "{['tfn":
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raise QAPISchemaError(self, 'Expected "{", "[", "]", string, '
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'boolean or "null"')
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while True:
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@ -309,15 +314,17 @@ class QAPISchemaParser(object):
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# TODO catching name collisions in generated code would be nice
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#
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def find_base_fields(base):
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base_struct_define = find_struct(base)
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if not base_struct_define:
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return None
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return base_struct_define['data']
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# Return the qtype of an alternate branch, or None on error.
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def find_alternate_member_qtype(qapi_type):
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if builtin_types.has_key(qapi_type):
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if qapi_type in builtin_types:
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return builtin_types[qapi_type]
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elif find_struct(qapi_type):
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return "QTYPE_QDICT"
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@ -327,6 +334,7 @@ def find_alternate_member_qtype(qapi_type):
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return "QTYPE_QDICT"
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return None
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# Return the discriminator enum define if discriminator is specified as an
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# enum type, otherwise return None.
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def discriminator_find_enum_define(expr):
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@ -346,11 +354,14 @@ def discriminator_find_enum_define(expr):
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return find_enum(discriminator_type)
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# FIXME should enforce "other than downstream extensions [...], all
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# names should begin with a letter".
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valid_name = re.compile('^[a-zA-Z_][a-zA-Z0-9_.-]*$')
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def check_name(expr_info, source, name, allow_optional = False,
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enum_member = False):
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def check_name(expr_info, source, name, allow_optional=False,
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enum_member=False):
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global valid_name
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membername = name
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@ -371,7 +382,8 @@ def check_name(expr_info, source, name, allow_optional = False,
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raise QAPIExprError(expr_info,
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"%s uses invalid name '%s'" % (source, name))
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def add_name(name, info, meta, implicit = False):
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def add_name(name, info, meta, implicit=False):
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global all_names
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check_name(info, "'%s'" % meta, name)
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# FIXME should reject names that differ only in '_' vs. '.'
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@ -386,12 +398,14 @@ def add_name(name, info, meta, implicit = False):
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% (meta, name))
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all_names[name] = meta
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def add_struct(definition, info):
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global struct_types
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name = definition['struct']
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add_name(name, info, 'struct')
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struct_types.append(definition)
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def find_struct(name):
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global struct_types
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for struct in struct_types:
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@ -399,12 +413,14 @@ def find_struct(name):
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return struct
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return None
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def add_union(definition, info):
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global union_types
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name = definition['union']
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add_name(name, info, 'union')
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union_types.append(definition)
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def find_union(name):
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global union_types
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for union in union_types:
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@ -412,11 +428,13 @@ def find_union(name):
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return union
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return None
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def add_enum(name, info, enum_values = None, implicit = False):
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def add_enum(name, info, enum_values=None, implicit=False):
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global enum_types
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add_name(name, info, 'enum', implicit)
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enum_types.append({"enum_name": name, "enum_values": enum_values})
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def find_enum(name):
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global enum_types
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for enum in enum_types:
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@ -424,12 +442,14 @@ def find_enum(name):
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return enum
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return None
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def is_enum(name):
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return find_enum(name) != None
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def check_type(expr_info, source, value, allow_array = False,
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allow_dict = False, allow_optional = False,
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allow_metas = []):
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def is_enum(name):
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return find_enum(name) is not None
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def check_type(expr_info, source, value, allow_array=False,
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allow_dict=False, allow_optional=False,
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allow_metas=[]):
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global all_names
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if value is None:
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@ -448,7 +468,7 @@ def check_type(expr_info, source, value, allow_array = False,
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# Check if type name for value is okay
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if isinstance(value, str):
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if not value in all_names:
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if value not in all_names:
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raise QAPIExprError(expr_info,
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"%s uses unknown type '%s'"
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% (source, value))
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@ -477,7 +497,8 @@ def check_type(expr_info, source, value, allow_array = False,
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allow_metas=['built-in', 'union', 'alternate', 'struct',
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'enum'])
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def check_member_clash(expr_info, base_name, data, source = ""):
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def check_member_clash(expr_info, base_name, data, source=""):
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base = find_struct(base_name)
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assert base
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base_members = base['data']
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@ -491,6 +512,7 @@ def check_member_clash(expr_info, base_name, data, source = ""):
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if base.get('base'):
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check_member_clash(expr_info, base['base'], data, source)
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def check_command(expr, expr_info):
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name = expr['command']
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@ -504,6 +526,7 @@ def check_command(expr, expr_info):
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expr.get('returns'), allow_array=True,
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allow_optional=True, allow_metas=returns_meta)
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def check_event(expr, expr_info):
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global events
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name = expr['event']
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@ -515,19 +538,20 @@ def check_event(expr, expr_info):
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expr.get('data'), allow_dict=True, allow_optional=True,
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allow_metas=['struct'])
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def check_union(expr, expr_info):
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name = expr['union']
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base = expr.get('base')
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discriminator = expr.get('discriminator')
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members = expr['data']
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values = { 'MAX': '(automatic)' }
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values = {'MAX': '(automatic)'}
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# Two types of unions, determined by discriminator.
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# With no discriminator it is a simple union.
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if discriminator is None:
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enum_define = None
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allow_metas=['built-in', 'union', 'alternate', 'struct', 'enum']
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allow_metas = ['built-in', 'union', 'alternate', 'struct', 'enum']
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if base is not None:
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raise QAPIExprError(expr_info,
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"Simple union '%s' must not have a base"
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@ -557,7 +581,7 @@ def check_union(expr, expr_info):
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"struct '%s'"
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% (discriminator, base))
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enum_define = find_enum(discriminator_type)
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allow_metas=['struct']
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allow_metas = ['struct']
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# Do not allow string discriminator
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if not enum_define:
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raise QAPIExprError(expr_info,
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@ -581,7 +605,7 @@ def check_union(expr, expr_info):
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# If the discriminator names an enum type, then all members
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# of 'data' must also be members of the enum type.
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if enum_define:
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if not key in enum_define['enum_values']:
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if key not in enum_define['enum_values']:
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raise QAPIExprError(expr_info,
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"Discriminator value '%s' is not found in "
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"enum '%s'" %
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@ -596,10 +620,11 @@ def check_union(expr, expr_info):
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% (name, key, values[c_key]))
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values[c_key] = key
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def check_alternate(expr, expr_info):
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name = expr['alternate']
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members = expr['data']
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values = { 'MAX': '(automatic)' }
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values = {'MAX': '(automatic)'}
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types_seen = {}
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# Check every branch
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@ -627,11 +652,12 @@ def check_alternate(expr, expr_info):
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% (name, key, types_seen[qtype]))
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types_seen[qtype] = key
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def check_enum(expr, expr_info):
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name = expr['enum']
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members = expr.get('data')
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prefix = expr.get('prefix')
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values = { 'MAX': '(automatic)' }
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values = {'MAX': '(automatic)'}
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if not isinstance(members, list):
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raise QAPIExprError(expr_info,
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@ -640,7 +666,7 @@ def check_enum(expr, expr_info):
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raise QAPIExprError(expr_info,
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"Enum '%s' requires a string for 'prefix'" % name)
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for member in members:
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check_name(expr_info, "Member of enum '%s'" %name, member,
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check_name(expr_info, "Member of enum '%s'" % name, member,
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enum_member=True)
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key = camel_to_upper(member)
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if key in values:
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@ -649,6 +675,7 @@ def check_enum(expr, expr_info):
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% (name, member, values[key]))
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values[key] = member
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def check_struct(expr, expr_info):
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name = expr['struct']
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members = expr['data']
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@ -660,6 +687,7 @@ def check_struct(expr, expr_info):
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if expr.get('base'):
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check_member_clash(expr_info, expr['base'], expr['data'])
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def check_keys(expr_elem, meta, required, optional=[]):
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expr = expr_elem['expr']
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info = expr_elem['info']
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@ -667,22 +695,23 @@ def check_keys(expr_elem, meta, required, optional=[]):
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if not isinstance(name, str):
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raise QAPIExprError(info,
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"'%s' key must have a string value" % meta)
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required = required + [ meta ]
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required = required + [meta]
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for (key, value) in expr.items():
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if not key in required and not key in optional:
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if key not in required and key not in optional:
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raise QAPIExprError(info,
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"Unknown key '%s' in %s '%s'"
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% (key, meta, name))
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if (key == 'gen' or key == 'success-response') and value != False:
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if (key == 'gen' or key == 'success-response') and value is not False:
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raise QAPIExprError(info,
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"'%s' of %s '%s' should only use false value"
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% (key, meta, name))
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for key in required:
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if not expr.has_key(key):
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if key not in expr:
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raise QAPIExprError(info,
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"Key '%s' is missing from %s '%s'"
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% (key, meta, name))
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def check_exprs(exprs):
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global all_names
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@ -692,24 +721,24 @@ def check_exprs(exprs):
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for expr_elem in exprs:
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expr = expr_elem['expr']
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info = expr_elem['info']
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if expr.has_key('enum'):
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if 'enum' in expr:
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check_keys(expr_elem, 'enum', ['data'], ['prefix'])
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add_enum(expr['enum'], info, expr['data'])
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elif expr.has_key('union'):
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elif 'union' in expr:
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check_keys(expr_elem, 'union', ['data'],
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['base', 'discriminator'])
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add_union(expr, info)
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elif expr.has_key('alternate'):
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elif 'alternate' in expr:
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check_keys(expr_elem, 'alternate', ['data'])
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add_name(expr['alternate'], info, 'alternate')
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elif expr.has_key('struct'):
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elif 'struct' in expr:
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check_keys(expr_elem, 'struct', ['data'], ['base'])
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add_struct(expr, info)
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elif expr.has_key('command'):
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elif 'command' in expr:
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check_keys(expr_elem, 'command', [],
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['data', 'returns', 'gen', 'success-response'])
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add_name(expr['command'], info, 'command')
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elif expr.has_key('event'):
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elif 'event' in expr:
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check_keys(expr_elem, 'event', [], ['data'])
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add_name(expr['event'], info, 'event')
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else:
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@ -719,11 +748,11 @@ def check_exprs(exprs):
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# Try again for hidden UnionKind enum
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for expr_elem in exprs:
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expr = expr_elem['expr']
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if expr.has_key('union'):
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if 'union' in expr:
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if not discriminator_find_enum_define(expr):
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add_enum('%sKind' % expr['union'], expr_elem['info'],
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implicit=True)
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elif expr.has_key('alternate'):
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elif 'alternate' in expr:
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add_enum('%sKind' % expr['alternate'], expr_elem['info'],
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implicit=True)
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@ -732,17 +761,17 @@ def check_exprs(exprs):
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expr = expr_elem['expr']
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info = expr_elem['info']
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if expr.has_key('enum'):
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if 'enum' in expr:
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check_enum(expr, info)
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elif expr.has_key('union'):
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elif 'union' in expr:
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check_union(expr, info)
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elif expr.has_key('alternate'):
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elif 'alternate' in expr:
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check_alternate(expr, info)
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elif expr.has_key('struct'):
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elif 'struct' in expr:
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check_struct(expr, info)
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elif expr.has_key('command'):
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elif 'command' in expr:
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check_command(expr, info)
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elif expr.has_key('event'):
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elif 'event' in expr:
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check_event(expr, info)
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else:
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assert False, 'unexpected meta type'
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@ -994,6 +1023,7 @@ class QAPISchemaObjectTypeVariants(object):
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vseen = dict(seen)
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v.check(schema, self.tag_member.type, vseen)
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class QAPISchemaObjectTypeVariant(QAPISchemaObjectTypeMember):
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def __init__(self, name, typ):
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QAPISchemaObjectTypeMember.__init__(self, name, typ, False)
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@ -1293,6 +1323,7 @@ def camel_case(name):
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new_name += ch.lower()
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return new_name
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# ENUMName -> ENUM_NAME, EnumName1 -> ENUM_NAME1
|
||||
# ENUM_NAME -> ENUM_NAME, ENUM_NAME1 -> ENUM_NAME1, ENUM_Name2 -> ENUM_NAME2
|
||||
# ENUM24_Name -> ENUM24_NAME
|
||||
@ -1307,14 +1338,14 @@ def camel_to_upper(value):
|
||||
c = c_fun_str[i]
|
||||
# When c is upper and no "_" appears before, do more checks
|
||||
if c.isupper() and (i > 0) and c_fun_str[i - 1] != "_":
|
||||
# Case 1: next string is lower
|
||||
# Case 2: previous string is digit
|
||||
if (i < (l - 1) and c_fun_str[i + 1].islower()) or \
|
||||
c_fun_str[i - 1].isdigit():
|
||||
if i < l - 1 and c_fun_str[i + 1].islower():
|
||||
new_name += '_'
|
||||
elif c_fun_str[i - 1].isdigit():
|
||||
new_name += '_'
|
||||
new_name += c
|
||||
return new_name.lstrip('_').upper()
|
||||
|
||||
|
||||
def c_enum_const(type_name, const_name, prefix=None):
|
||||
if prefix is not None:
|
||||
type_name = prefix
|
||||
@ -1322,6 +1353,7 @@ def c_enum_const(type_name, const_name, prefix=None):
|
||||
|
||||
c_name_trans = string.maketrans('.-', '__')
|
||||
|
||||
|
||||
# Map @name to a valid C identifier.
|
||||
# If @protect, avoid returning certain ticklish identifiers (like
|
||||
# C keywords) by prepending "q_".
|
||||
@ -1334,15 +1366,16 @@ c_name_trans = string.maketrans('.-', '__')
|
||||
def c_name(name, protect=True):
|
||||
# ANSI X3J11/88-090, 3.1.1
|
||||
c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue',
|
||||
'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
|
||||
'for', 'goto', 'if', 'int', 'long', 'register', 'return',
|
||||
'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
|
||||
'typedef', 'union', 'unsigned', 'void', 'volatile', 'while'])
|
||||
'default', 'do', 'double', 'else', 'enum', 'extern',
|
||||
'float', 'for', 'goto', 'if', 'int', 'long', 'register',
|
||||
'return', 'short', 'signed', 'sizeof', 'static',
|
||||
'struct', 'switch', 'typedef', 'union', 'unsigned',
|
||||
'void', 'volatile', 'while'])
|
||||
# ISO/IEC 9899:1999, 6.4.1
|
||||
c99_words = set(['inline', 'restrict', '_Bool', '_Complex', '_Imaginary'])
|
||||
# ISO/IEC 9899:2011, 6.4.1
|
||||
c11_words = set(['_Alignas', '_Alignof', '_Atomic', '_Generic', '_Noreturn',
|
||||
'_Static_assert', '_Thread_local'])
|
||||
c11_words = set(['_Alignas', '_Alignof', '_Atomic', '_Generic',
|
||||
'_Noreturn', '_Static_assert', '_Thread_local'])
|
||||
# GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html
|
||||
# excluding _.*
|
||||
gcc_words = set(['asm', 'typeof'])
|
||||
@ -1358,29 +1391,34 @@ def c_name(name, protect=True):
|
||||
'not_eq', 'or', 'or_eq', 'xor', 'xor_eq'])
|
||||
# namespace pollution:
|
||||
polluted_words = set(['unix', 'errno'])
|
||||
if protect and (name in c89_words | c99_words | c11_words | gcc_words | cpp_words | polluted_words):
|
||||
if protect and (name in c89_words | c99_words | c11_words | gcc_words
|
||||
| cpp_words | polluted_words):
|
||||
return "q_" + name
|
||||
return name.translate(c_name_trans)
|
||||
|
||||
eatspace = '\033EATSPACE.'
|
||||
pointer_suffix = ' *' + eatspace
|
||||
|
||||
|
||||
def genindent(count):
|
||||
ret = ""
|
||||
for i in range(count):
|
||||
for _ in range(count):
|
||||
ret += " "
|
||||
return ret
|
||||
|
||||
indent_level = 0
|
||||
|
||||
|
||||
def push_indent(indent_amount=4):
|
||||
global indent_level
|
||||
indent_level += indent_amount
|
||||
|
||||
|
||||
def pop_indent(indent_amount=4):
|
||||
global indent_level
|
||||
indent_level -= indent_amount
|
||||
|
||||
|
||||
# Generate @code with @kwds interpolated.
|
||||
# Obey indent_level, and strip eatspace.
|
||||
def cgen(code, **kwds):
|
||||
@ -1393,6 +1431,7 @@ def cgen(code, **kwds):
|
||||
raw = raw[0]
|
||||
return re.sub(re.escape(eatspace) + ' *', '', raw)
|
||||
|
||||
|
||||
def mcgen(code, **kwds):
|
||||
if code[0] == '\n':
|
||||
code = code[1:]
|
||||
@ -1402,6 +1441,7 @@ def mcgen(code, **kwds):
|
||||
def guardname(filename):
|
||||
return c_name(filename, protect=False).upper()
|
||||
|
||||
|
||||
def guardstart(name):
|
||||
return mcgen('''
|
||||
|
||||
@ -1411,6 +1451,7 @@ def guardstart(name):
|
||||
''',
|
||||
name=guardname(name))
|
||||
|
||||
|
||||
def guardend(name):
|
||||
return mcgen('''
|
||||
|
||||
@ -1419,6 +1460,7 @@ def guardend(name):
|
||||
''',
|
||||
name=guardname(name))
|
||||
|
||||
|
||||
def gen_enum_lookup(name, values, prefix=None):
|
||||
ret = mcgen('''
|
||||
|
||||
@ -1440,6 +1482,7 @@ const char *const %(c_name)s_lookup[] = {
|
||||
max_index=max_index)
|
||||
return ret
|
||||
|
||||
|
||||
def gen_enum(name, values, prefix=None):
|
||||
# append automatically generated _MAX value
|
||||
enum_values = values + ['MAX']
|
||||
@ -1471,6 +1514,7 @@ extern const char *const %(c_name)s_lookup[];
|
||||
c_name=c_name(name))
|
||||
return ret
|
||||
|
||||
|
||||
def gen_params(arg_type, extra):
|
||||
if not arg_type:
|
||||
return extra
|
||||
@ -1491,7 +1535,8 @@ def gen_params(arg_type, extra):
|
||||
# Common command line parsing
|
||||
#
|
||||
|
||||
def parse_command_line(extra_options = "", extra_long_options = []):
|
||||
|
||||
def parse_command_line(extra_options="", extra_long_options=[]):
|
||||
|
||||
try:
|
||||
opts, args = getopt.gnu_getopt(sys.argv[1:],
|
||||
@ -1542,6 +1587,7 @@ def parse_command_line(extra_options = "", extra_long_options = []):
|
||||
# Generate output files with boilerplate
|
||||
#
|
||||
|
||||
|
||||
def open_output(output_dir, do_c, do_h, prefix, c_file, h_file,
|
||||
c_comment, h_comment):
|
||||
guard = guardname(prefix + h_file)
|
||||
@ -1569,7 +1615,7 @@ def open_output(output_dir, do_c, do_h, prefix, c_file, h_file,
|
||||
/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
||||
%(comment)s
|
||||
''',
|
||||
comment = c_comment))
|
||||
comment=c_comment))
|
||||
|
||||
fdecl.write(mcgen('''
|
||||
/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
|
||||
@ -1578,10 +1624,11 @@ def open_output(output_dir, do_c, do_h, prefix, c_file, h_file,
|
||||
#define %(guard)s
|
||||
|
||||
''',
|
||||
comment = h_comment, guard = guard))
|
||||
comment=h_comment, guard=guard))
|
||||
|
||||
return (fdef, fdecl)
|
||||
|
||||
|
||||
def close_output(fdef, fdecl):
|
||||
fdecl.write('''
|
||||
#endif
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user