6b5abc7df7
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>
912 lines
32 KiB
Python
912 lines
32 KiB
Python
#
|
|
# QAPI helper library
|
|
#
|
|
# Copyright IBM, Corp. 2011
|
|
# Copyright (c) 2013-2015 Red Hat Inc.
|
|
#
|
|
# Authors:
|
|
# Anthony Liguori <aliguori@us.ibm.com>
|
|
# Markus Armbruster <armbru@redhat.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
import re
|
|
from ordereddict import OrderedDict
|
|
import os
|
|
import sys
|
|
|
|
builtin_types = {
|
|
'str': 'QTYPE_QSTRING',
|
|
'int': 'QTYPE_QINT',
|
|
'number': 'QTYPE_QFLOAT',
|
|
'bool': 'QTYPE_QBOOL',
|
|
'int8': 'QTYPE_QINT',
|
|
'int16': 'QTYPE_QINT',
|
|
'int32': 'QTYPE_QINT',
|
|
'int64': 'QTYPE_QINT',
|
|
'uint8': 'QTYPE_QINT',
|
|
'uint16': 'QTYPE_QINT',
|
|
'uint32': 'QTYPE_QINT',
|
|
'uint64': 'QTYPE_QINT',
|
|
'size': 'QTYPE_QINT',
|
|
}
|
|
|
|
# Whitelist of commands allowed to return a non-dictionary
|
|
returns_whitelist = [
|
|
# From QMP:
|
|
'human-monitor-command',
|
|
'query-migrate-cache-size',
|
|
'query-tpm-models',
|
|
'query-tpm-types',
|
|
'ringbuf-read',
|
|
|
|
# From QGA:
|
|
'guest-file-open',
|
|
'guest-fsfreeze-freeze',
|
|
'guest-fsfreeze-freeze-list',
|
|
'guest-fsfreeze-status',
|
|
'guest-fsfreeze-thaw',
|
|
'guest-get-time',
|
|
'guest-set-vcpus',
|
|
'guest-sync',
|
|
'guest-sync-delimited',
|
|
|
|
# From qapi-schema-test:
|
|
'user_def_cmd3',
|
|
]
|
|
|
|
enum_types = []
|
|
struct_types = []
|
|
union_types = []
|
|
events = []
|
|
all_names = {}
|
|
|
|
def error_path(parent):
|
|
res = ""
|
|
while parent:
|
|
res = ("In file included from %s:%d:\n" % (parent['file'],
|
|
parent['line'])) + res
|
|
parent = parent['parent']
|
|
return res
|
|
|
|
class QAPISchemaError(Exception):
|
|
def __init__(self, schema, msg):
|
|
self.input_file = schema.input_file
|
|
self.msg = msg
|
|
self.col = 1
|
|
self.line = schema.line
|
|
for ch in schema.src[schema.line_pos:schema.pos]:
|
|
if ch == '\t':
|
|
self.col = (self.col + 7) % 8 + 1
|
|
else:
|
|
self.col += 1
|
|
self.info = schema.parent_info
|
|
|
|
def __str__(self):
|
|
return error_path(self.info) + \
|
|
"%s:%d:%d: %s" % (self.input_file, self.line, self.col, self.msg)
|
|
|
|
class QAPIExprError(Exception):
|
|
def __init__(self, expr_info, msg):
|
|
self.info = expr_info
|
|
self.msg = msg
|
|
|
|
def __str__(self):
|
|
return error_path(self.info['parent']) + \
|
|
"%s:%d: %s" % (self.info['file'], self.info['line'], self.msg)
|
|
|
|
class QAPISchema:
|
|
|
|
def __init__(self, fp, input_relname=None, include_hist=[],
|
|
previously_included=[], parent_info=None):
|
|
""" include_hist is a stack used to detect inclusion cycles
|
|
previously_included is a global state used to avoid multiple
|
|
inclusions of the same file"""
|
|
input_fname = os.path.abspath(fp.name)
|
|
if input_relname is None:
|
|
input_relname = fp.name
|
|
self.input_dir = os.path.dirname(input_fname)
|
|
self.input_file = input_relname
|
|
self.include_hist = include_hist + [(input_relname, input_fname)]
|
|
previously_included.append(input_fname)
|
|
self.parent_info = parent_info
|
|
self.src = fp.read()
|
|
if self.src == '' or self.src[-1] != '\n':
|
|
self.src += '\n'
|
|
self.cursor = 0
|
|
self.line = 1
|
|
self.line_pos = 0
|
|
self.exprs = []
|
|
self.accept()
|
|
|
|
while self.tok != None:
|
|
expr_info = {'file': input_relname, 'line': self.line, 'parent': self.parent_info}
|
|
expr = self.get_expr(False)
|
|
if isinstance(expr, dict) and "include" in expr:
|
|
if len(expr) != 1:
|
|
raise QAPIExprError(expr_info, "Invalid 'include' directive")
|
|
include = expr["include"]
|
|
if not isinstance(include, str):
|
|
raise QAPIExprError(expr_info,
|
|
'Expected a file name (string), got: %s'
|
|
% include)
|
|
include_path = os.path.join(self.input_dir, include)
|
|
for elem in self.include_hist:
|
|
if include_path == elem[1]:
|
|
raise QAPIExprError(expr_info, "Inclusion loop for %s"
|
|
% include)
|
|
# skip multiple include of the same file
|
|
if include_path in previously_included:
|
|
continue
|
|
try:
|
|
fobj = open(include_path, 'r')
|
|
except IOError, e:
|
|
raise QAPIExprError(expr_info,
|
|
'%s: %s' % (e.strerror, include))
|
|
exprs_include = QAPISchema(fobj, include, self.include_hist,
|
|
previously_included, expr_info)
|
|
self.exprs.extend(exprs_include.exprs)
|
|
else:
|
|
expr_elem = {'expr': expr,
|
|
'info': expr_info}
|
|
self.exprs.append(expr_elem)
|
|
|
|
def accept(self):
|
|
while True:
|
|
self.tok = self.src[self.cursor]
|
|
self.pos = self.cursor
|
|
self.cursor += 1
|
|
self.val = None
|
|
|
|
if self.tok == '#':
|
|
self.cursor = self.src.find('\n', self.cursor)
|
|
elif self.tok in ['{', '}', ':', ',', '[', ']']:
|
|
return
|
|
elif self.tok == "'":
|
|
string = ''
|
|
esc = False
|
|
while True:
|
|
ch = self.src[self.cursor]
|
|
self.cursor += 1
|
|
if ch == '\n':
|
|
raise QAPISchemaError(self,
|
|
'Missing terminating "\'"')
|
|
if esc:
|
|
string += ch
|
|
esc = False
|
|
elif ch == "\\":
|
|
esc = True
|
|
elif ch == "'":
|
|
self.val = string
|
|
return
|
|
else:
|
|
string += ch
|
|
elif self.tok in "tfn":
|
|
val = self.src[self.cursor - 1:]
|
|
if val.startswith("true"):
|
|
self.val = True
|
|
self.cursor += 3
|
|
return
|
|
elif val.startswith("false"):
|
|
self.val = False
|
|
self.cursor += 4
|
|
return
|
|
elif val.startswith("null"):
|
|
self.val = None
|
|
self.cursor += 3
|
|
return
|
|
elif self.tok == '\n':
|
|
if self.cursor == len(self.src):
|
|
self.tok = None
|
|
return
|
|
self.line += 1
|
|
self.line_pos = self.cursor
|
|
elif not self.tok.isspace():
|
|
raise QAPISchemaError(self, 'Stray "%s"' % self.tok)
|
|
|
|
def get_members(self):
|
|
expr = OrderedDict()
|
|
if self.tok == '}':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != "'":
|
|
raise QAPISchemaError(self, 'Expected string or "}"')
|
|
while True:
|
|
key = self.val
|
|
self.accept()
|
|
if self.tok != ':':
|
|
raise QAPISchemaError(self, 'Expected ":"')
|
|
self.accept()
|
|
if key in expr:
|
|
raise QAPISchemaError(self, 'Duplicate key "%s"' % key)
|
|
expr[key] = self.get_expr(True)
|
|
if self.tok == '}':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != ',':
|
|
raise QAPISchemaError(self, 'Expected "," or "}"')
|
|
self.accept()
|
|
if self.tok != "'":
|
|
raise QAPISchemaError(self, 'Expected string')
|
|
|
|
def get_values(self):
|
|
expr = []
|
|
if self.tok == ']':
|
|
self.accept()
|
|
return expr
|
|
if not self.tok in "{['tfn":
|
|
raise QAPISchemaError(self, 'Expected "{", "[", "]", string, '
|
|
'boolean or "null"')
|
|
while True:
|
|
expr.append(self.get_expr(True))
|
|
if self.tok == ']':
|
|
self.accept()
|
|
return expr
|
|
if self.tok != ',':
|
|
raise QAPISchemaError(self, 'Expected "," or "]"')
|
|
self.accept()
|
|
|
|
def get_expr(self, nested):
|
|
if self.tok != '{' and not nested:
|
|
raise QAPISchemaError(self, 'Expected "{"')
|
|
if self.tok == '{':
|
|
self.accept()
|
|
expr = self.get_members()
|
|
elif self.tok == '[':
|
|
self.accept()
|
|
expr = self.get_values()
|
|
elif self.tok in "'tfn":
|
|
expr = self.val
|
|
self.accept()
|
|
else:
|
|
raise QAPISchemaError(self, 'Expected "{", "[" or string')
|
|
return expr
|
|
|
|
def find_base_fields(base):
|
|
base_struct_define = find_struct(base)
|
|
if not base_struct_define:
|
|
return None
|
|
return base_struct_define['data']
|
|
|
|
# Return the qtype of an alternate branch, or None on error.
|
|
def find_alternate_member_qtype(qapi_type):
|
|
if builtin_types.has_key(qapi_type):
|
|
return builtin_types[qapi_type]
|
|
elif find_struct(qapi_type):
|
|
return "QTYPE_QDICT"
|
|
elif find_enum(qapi_type):
|
|
return "QTYPE_QSTRING"
|
|
elif find_union(qapi_type):
|
|
return "QTYPE_QDICT"
|
|
return None
|
|
|
|
# Return the discriminator enum define if discriminator is specified as an
|
|
# enum type, otherwise return None.
|
|
def discriminator_find_enum_define(expr):
|
|
base = expr.get('base')
|
|
discriminator = expr.get('discriminator')
|
|
|
|
if not (discriminator and base):
|
|
return None
|
|
|
|
base_fields = find_base_fields(base)
|
|
if not base_fields:
|
|
return None
|
|
|
|
discriminator_type = base_fields.get(discriminator)
|
|
if not discriminator_type:
|
|
return None
|
|
|
|
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_optional = False,
|
|
allow_star = False, allow_metas = []):
|
|
global all_names
|
|
orig_value = value
|
|
|
|
if value is None:
|
|
return
|
|
|
|
if allow_star and value == '**':
|
|
return
|
|
|
|
# Check if array type for value is okay
|
|
if isinstance(value, list):
|
|
if not allow_array:
|
|
raise QAPIExprError(expr_info,
|
|
"%s cannot be an array" % source)
|
|
if len(value) != 1 or not isinstance(value[0], str):
|
|
raise QAPIExprError(expr_info,
|
|
"%s: array type must contain single type name"
|
|
% source)
|
|
value = value[0]
|
|
orig_value = "array of %s" %value
|
|
|
|
# Check if type name for value is okay
|
|
if isinstance(value, str):
|
|
if value == '**':
|
|
raise QAPIExprError(expr_info,
|
|
"%s uses '**' but did not request 'gen':false"
|
|
% source)
|
|
if not value in all_names:
|
|
raise QAPIExprError(expr_info,
|
|
"%s uses unknown type '%s'"
|
|
% (source, orig_value))
|
|
if not all_names[value] in allow_metas:
|
|
raise QAPIExprError(expr_info,
|
|
"%s cannot use %s type '%s'"
|
|
% (source, all_names[value], orig_value))
|
|
return
|
|
|
|
# value is a dictionary, check that each member is okay
|
|
if not isinstance(value, OrderedDict):
|
|
raise QAPIExprError(expr_info,
|
|
"%s should be a dictionary" % source)
|
|
if not allow_dict:
|
|
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)
|
|
# 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_star=allow_star,
|
|
allow_metas=['built-in', 'union', 'alternate', 'struct',
|
|
'enum'])
|
|
|
|
def check_command(expr, expr_info):
|
|
name = expr['command']
|
|
allow_star = expr.has_key('gen')
|
|
|
|
check_type(expr_info, "'data' for command '%s'" % name,
|
|
expr.get('data'), allow_dict=True, allow_optional=True,
|
|
allow_metas=['union', 'struct'], allow_star=allow_star)
|
|
returns_meta = ['union', 'struct']
|
|
if name in returns_whitelist:
|
|
returns_meta += ['built-in', 'alternate', 'enum']
|
|
check_type(expr_info, "'returns' for command '%s'" % name,
|
|
expr.get('returns'), allow_array=True, allow_dict=True,
|
|
allow_optional=True, allow_metas=returns_meta,
|
|
allow_star=allow_star)
|
|
|
|
def check_event(expr, expr_info):
|
|
global events
|
|
name = expr['event']
|
|
params = expr.get('data')
|
|
|
|
if name.upper() == 'MAX':
|
|
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, allow_optional=True,
|
|
allow_metas=['union', 'struct'])
|
|
|
|
def check_union(expr, expr_info):
|
|
name = expr['union']
|
|
base = expr.get('base')
|
|
discriminator = expr.get('discriminator')
|
|
members = expr['data']
|
|
values = { 'MAX': '(automatic)' }
|
|
|
|
# If the object has a member 'base', its value must name a struct,
|
|
# and there must be a discriminator.
|
|
if base is not None:
|
|
if discriminator is None:
|
|
raise QAPIExprError(expr_info,
|
|
"Union '%s' requires a discriminator to go "
|
|
"along with base" %name)
|
|
|
|
# Two types of unions, determined by discriminator.
|
|
|
|
# With no discriminator it is a simple union.
|
|
if discriminator is None:
|
|
enum_define = None
|
|
allow_metas=['built-in', 'union', 'alternate', 'struct', 'enum']
|
|
if base is not None:
|
|
raise QAPIExprError(expr_info,
|
|
"Simple union '%s' must not have a base"
|
|
% name)
|
|
|
|
# Else, it's a flat union.
|
|
else:
|
|
# The object must have a string member 'base'.
|
|
if not isinstance(base, str):
|
|
raise QAPIExprError(expr_info,
|
|
"Flat union '%s' must have a string base field"
|
|
% name)
|
|
base_fields = find_base_fields(base)
|
|
if not base_fields:
|
|
raise QAPIExprError(expr_info,
|
|
"Base '%s' is not a valid struct"
|
|
% base)
|
|
|
|
# The value of member 'discriminator' must name a non-optional
|
|
# member of the base struct.
|
|
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,
|
|
"Discriminator '%s' is not a member of base "
|
|
"struct '%s'"
|
|
% (discriminator, base))
|
|
enum_define = find_enum(discriminator_type)
|
|
allow_metas=['struct']
|
|
# Do not allow string discriminator
|
|
if not enum_define:
|
|
raise QAPIExprError(expr_info,
|
|
"Discriminator '%s' must be of enumeration "
|
|
"type" % discriminator)
|
|
|
|
# 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),
|
|
value, allow_array=True, allow_metas=allow_metas)
|
|
|
|
# If the discriminator names an enum type, then all members
|
|
# of 'data' must also be members of the enum type.
|
|
if enum_define:
|
|
if not key in enum_define['enum_values']:
|
|
raise QAPIExprError(expr_info,
|
|
"Discriminator value '%s' is not found in "
|
|
"enum '%s'" %
|
|
(key, enum_define["enum_name"]))
|
|
|
|
# Otherwise, check for conflicts in the generated enum
|
|
else:
|
|
c_key = _generate_enum_string(key)
|
|
if c_key in values:
|
|
raise QAPIExprError(expr_info,
|
|
"Union '%s' member '%s' clashes with '%s'"
|
|
% (name, key, values[c_key]))
|
|
values[c_key] = key
|
|
|
|
def check_alternate(expr, expr_info):
|
|
name = expr['alternate']
|
|
members = expr['data']
|
|
values = { 'MAX': '(automatic)' }
|
|
types_seen = {}
|
|
|
|
# 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:
|
|
raise QAPIExprError(expr_info,
|
|
"Alternate '%s' member '%s' clashes with '%s'"
|
|
% (name, key, values[c_key]))
|
|
values[c_key] = key
|
|
|
|
# Ensure alternates have no type conflicts.
|
|
check_type(expr_info, "Member '%s' of alternate '%s'" % (key, name),
|
|
value,
|
|
allow_metas=['built-in', 'union', 'struct', 'enum'])
|
|
qtype = find_alternate_member_qtype(value)
|
|
assert qtype
|
|
if qtype in types_seen:
|
|
raise QAPIExprError(expr_info,
|
|
"Alternate '%s' member '%s' can't "
|
|
"be distinguished from member '%s'"
|
|
% (name, key, types_seen[qtype]))
|
|
types_seen[qtype] = key
|
|
|
|
def check_enum(expr, expr_info):
|
|
name = expr['enum']
|
|
members = expr.get('data')
|
|
values = { 'MAX': '(automatic)' }
|
|
|
|
if not isinstance(members, list):
|
|
raise QAPIExprError(expr_info,
|
|
"Enum '%s' requires an array for 'data'" % name)
|
|
for member in members:
|
|
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,
|
|
"Enum '%s' member '%s' clashes with '%s'"
|
|
% (name, member, values[key]))
|
|
values[key] = member
|
|
|
|
def check_struct(expr, expr_info):
|
|
name = expr['struct']
|
|
members = expr['data']
|
|
|
|
check_type(expr_info, "'data' for struct '%s'" % name, members,
|
|
allow_dict=True, allow_optional=True)
|
|
check_type(expr_info, "'base' for struct '%s'" % name, expr.get('base'),
|
|
allow_metas=['struct'])
|
|
|
|
def check_exprs(schema):
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
|
|
if expr.has_key('enum'):
|
|
check_enum(expr, info)
|
|
elif expr.has_key('union'):
|
|
check_union(expr, info)
|
|
elif expr.has_key('alternate'):
|
|
check_alternate(expr, info)
|
|
elif expr.has_key('struct'):
|
|
check_struct(expr, info)
|
|
elif expr.has_key('command'):
|
|
check_command(expr, info)
|
|
elif expr.has_key('event'):
|
|
check_event(expr, info)
|
|
else:
|
|
assert False, 'unexpected meta type'
|
|
|
|
def check_keys(expr_elem, meta, required, optional=[]):
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
name = expr[meta]
|
|
if not isinstance(name, str):
|
|
raise QAPIExprError(info,
|
|
"'%s' key must have a string value" % meta)
|
|
required = required + [ meta ]
|
|
for (key, value) in expr.items():
|
|
if not key in required and not key in optional:
|
|
raise QAPIExprError(info,
|
|
"Unknown key '%s' in %s '%s'"
|
|
% (key, meta, name))
|
|
if (key == 'gen' or key == 'success-response') and value != False:
|
|
raise QAPIExprError(info,
|
|
"'%s' of %s '%s' should only use false value"
|
|
% (key, meta, name))
|
|
for key in required:
|
|
if not expr.has_key(key):
|
|
raise QAPIExprError(info,
|
|
"Key '%s' is missing from %s '%s'"
|
|
% (key, meta, name))
|
|
|
|
|
|
def parse_schema(input_file):
|
|
global all_names
|
|
exprs = []
|
|
|
|
# First pass: read entire file into memory
|
|
try:
|
|
schema = QAPISchema(open(input_file, "r"))
|
|
except (QAPISchemaError, QAPIExprError), e:
|
|
print >>sys.stderr, e
|
|
exit(1)
|
|
|
|
try:
|
|
# Next pass: learn the types and check for valid expression keys. At
|
|
# this point, top-level 'include' has already been flattened.
|
|
for builtin in builtin_types.keys():
|
|
all_names[builtin] = 'built-in'
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
if expr.has_key('enum'):
|
|
check_keys(expr_elem, 'enum', ['data'])
|
|
add_enum(expr['enum'], info, expr['data'])
|
|
elif expr.has_key('union'):
|
|
check_keys(expr_elem, 'union', ['data'],
|
|
['base', 'discriminator'])
|
|
add_union(expr, info)
|
|
elif expr.has_key('alternate'):
|
|
check_keys(expr_elem, 'alternate', ['data'])
|
|
add_name(expr['alternate'], info, 'alternate')
|
|
elif expr.has_key('struct'):
|
|
check_keys(expr_elem, 'struct', ['data'], ['base'])
|
|
add_struct(expr, info)
|
|
elif expr.has_key('command'):
|
|
check_keys(expr_elem, 'command', [],
|
|
['data', 'returns', 'gen', 'success-response'])
|
|
add_name(expr['command'], info, 'command')
|
|
elif expr.has_key('event'):
|
|
check_keys(expr_elem, 'event', [], ['data'])
|
|
add_name(expr['event'], info, 'event')
|
|
else:
|
|
raise QAPIExprError(expr_elem['info'],
|
|
"Expression is missing metatype")
|
|
exprs.append(expr)
|
|
|
|
# Try again for hidden UnionKind enum
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
if expr.has_key('union'):
|
|
if not discriminator_find_enum_define(expr):
|
|
add_enum('%sKind' % expr['union'], expr_elem['info'],
|
|
implicit=True)
|
|
elif expr.has_key('alternate'):
|
|
add_enum('%sKind' % expr['alternate'], expr_elem['info'],
|
|
implicit=True)
|
|
|
|
# Final pass - validate that exprs make sense
|
|
check_exprs(schema)
|
|
except QAPIExprError, e:
|
|
print >>sys.stderr, e
|
|
exit(1)
|
|
|
|
return exprs
|
|
|
|
def parse_args(typeinfo):
|
|
if isinstance(typeinfo, str):
|
|
struct = find_struct(typeinfo)
|
|
assert struct != None
|
|
typeinfo = struct['data']
|
|
|
|
for member in typeinfo:
|
|
argname = member
|
|
argentry = typeinfo[member]
|
|
optional = False
|
|
if member.startswith('*'):
|
|
argname = member[1:]
|
|
optional = True
|
|
# 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 = ''
|
|
for ch in name:
|
|
if ch.isupper() and new_name:
|
|
new_name += '_'
|
|
if ch == '-':
|
|
new_name += '_'
|
|
else:
|
|
new_name += ch.lower()
|
|
return new_name
|
|
|
|
def camel_case(name):
|
|
new_name = ''
|
|
first = True
|
|
for ch in name:
|
|
if ch in ['_', '-']:
|
|
first = True
|
|
elif first:
|
|
new_name += ch.upper()
|
|
first = False
|
|
else:
|
|
new_name += ch.lower()
|
|
return new_name
|
|
|
|
def c_var(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'])
|
|
# 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'])
|
|
# GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html
|
|
# excluding _.*
|
|
gcc_words = set(['asm', 'typeof'])
|
|
# C++ ISO/IEC 14882:2003 2.11
|
|
cpp_words = set(['bool', 'catch', 'class', 'const_cast', 'delete',
|
|
'dynamic_cast', 'explicit', 'false', 'friend', 'mutable',
|
|
'namespace', 'new', 'operator', 'private', 'protected',
|
|
'public', 'reinterpret_cast', 'static_cast', 'template',
|
|
'this', 'throw', 'true', 'try', 'typeid', 'typename',
|
|
'using', 'virtual', 'wchar_t',
|
|
# alternative representations
|
|
'and', 'and_eq', 'bitand', 'bitor', 'compl', 'not',
|
|
'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):
|
|
return "q_" + name
|
|
return name.replace('-', '_').lstrip("*")
|
|
|
|
def c_fun(name, protect=True):
|
|
return c_var(name, protect).replace('.', '_')
|
|
|
|
def c_list_type(name):
|
|
return '%sList' % name
|
|
|
|
def type_name(name):
|
|
if type(name) == list:
|
|
return c_list_type(name[0])
|
|
return name
|
|
|
|
def add_name(name, info, meta, implicit = False):
|
|
global all_names
|
|
check_name(info, "'%s'" % meta, name)
|
|
if name in all_names:
|
|
raise QAPIExprError(info,
|
|
"%s '%s' is already defined"
|
|
% (all_names[name], name))
|
|
if not implicit and name[-4:] == 'Kind':
|
|
raise QAPIExprError(info,
|
|
"%s '%s' should not end in 'Kind'"
|
|
% (meta, name))
|
|
all_names[name] = meta
|
|
|
|
def add_struct(definition, info):
|
|
global struct_types
|
|
name = definition['struct']
|
|
add_name(name, info, 'struct')
|
|
struct_types.append(definition)
|
|
|
|
def find_struct(name):
|
|
global struct_types
|
|
for struct in struct_types:
|
|
if struct['struct'] == name:
|
|
return struct
|
|
return None
|
|
|
|
def add_union(definition, info):
|
|
global union_types
|
|
name = definition['union']
|
|
add_name(name, info, 'union')
|
|
union_types.append(definition)
|
|
|
|
def find_union(name):
|
|
global union_types
|
|
for union in union_types:
|
|
if union['union'] == name:
|
|
return union
|
|
return None
|
|
|
|
def add_enum(name, info, enum_values = None, implicit = False):
|
|
global enum_types
|
|
add_name(name, info, 'enum', implicit)
|
|
enum_types.append({"enum_name": name, "enum_values": enum_values})
|
|
|
|
def find_enum(name):
|
|
global enum_types
|
|
for enum in enum_types:
|
|
if enum['enum_name'] == name:
|
|
return enum
|
|
return None
|
|
|
|
def is_enum(name):
|
|
return find_enum(name) != None
|
|
|
|
eatspace = '\033EATSPACE.'
|
|
|
|
# A special suffix is added in c_type() for pointer types, and it's
|
|
# stripped in mcgen(). So please notice this when you check the return
|
|
# value of c_type() outside mcgen().
|
|
def c_type(name, is_param=False):
|
|
if name == 'str':
|
|
if is_param:
|
|
return 'const char *' + eatspace
|
|
return 'char *' + eatspace
|
|
|
|
elif name == 'int':
|
|
return 'int64_t'
|
|
elif (name == 'int8' or name == 'int16' or name == 'int32' or
|
|
name == 'int64' or name == 'uint8' or name == 'uint16' or
|
|
name == 'uint32' or name == 'uint64'):
|
|
return name + '_t'
|
|
elif name == 'size':
|
|
return 'uint64_t'
|
|
elif name == 'bool':
|
|
return 'bool'
|
|
elif name == 'number':
|
|
return 'double'
|
|
elif type(name) == list:
|
|
return '%s *%s' % (c_list_type(name[0]), eatspace)
|
|
elif is_enum(name):
|
|
return name
|
|
elif name == None or len(name) == 0:
|
|
return 'void'
|
|
elif name in events:
|
|
return '%sEvent *%s' % (camel_case(name), eatspace)
|
|
else:
|
|
return '%s *%s' % (name, eatspace)
|
|
|
|
def is_c_ptr(name):
|
|
suffix = "*" + eatspace
|
|
return c_type(name).endswith(suffix)
|
|
|
|
def genindent(count):
|
|
ret = ""
|
|
for i 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
|
|
|
|
def cgen(code, **kwds):
|
|
indent = genindent(indent_level)
|
|
lines = code.split('\n')
|
|
lines = map(lambda x: indent + x, lines)
|
|
return '\n'.join(lines) % kwds + '\n'
|
|
|
|
def mcgen(code, **kwds):
|
|
raw = cgen('\n'.join(code.split('\n')[1:-1]), **kwds)
|
|
return re.sub(re.escape(eatspace) + ' *', '', raw)
|
|
|
|
def basename(filename):
|
|
return filename.split("/")[-1]
|
|
|
|
def guardname(filename):
|
|
guard = basename(filename).rsplit(".", 1)[0]
|
|
for substr in [".", " ", "-"]:
|
|
guard = guard.replace(substr, "_")
|
|
return guard.upper() + '_H'
|
|
|
|
def guardstart(name):
|
|
return mcgen('''
|
|
|
|
#ifndef %(name)s
|
|
#define %(name)s
|
|
|
|
''',
|
|
name=guardname(name))
|
|
|
|
def guardend(name):
|
|
return mcgen('''
|
|
|
|
#endif /* %(name)s */
|
|
|
|
''',
|
|
name=guardname(name))
|
|
|
|
# ENUMName -> ENUM_NAME, EnumName1 -> ENUM_NAME1
|
|
# ENUM_NAME -> ENUM_NAME, ENUM_NAME1 -> ENUM_NAME1, ENUM_Name2 -> ENUM_NAME2
|
|
# ENUM24_Name -> ENUM24_NAME
|
|
def _generate_enum_string(value):
|
|
c_fun_str = c_fun(value, False)
|
|
if value.isupper():
|
|
return c_fun_str
|
|
|
|
new_name = ''
|
|
l = len(c_fun_str)
|
|
for i in range(l):
|
|
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():
|
|
new_name += '_'
|
|
new_name += c
|
|
return new_name.lstrip('_').upper()
|
|
|
|
def generate_enum_full_value(enum_name, enum_value):
|
|
abbrev_string = _generate_enum_string(enum_name)
|
|
value_string = _generate_enum_string(enum_value)
|
|
return "%s_%s" % (abbrev_string, value_string)
|