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schema.py
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2699 lines (2142 loc) · 88.9 KB
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# Copyright (c) 2018-2019 Robin Jarry
# Copyright (c) 2021 RACOM s.r.o.
# SPDX-License-Identifier: MIT
from contextlib import suppress
from typing import IO, Any, Dict, Iterator, List, Optional, Tuple, Union
from _libyang import ffi, lib
from .util import (
IOType,
LibyangError,
c2str,
init_output,
ly_array_iter,
ly_list_iter,
str2c,
)
# -------------------------------------------------------------------------------------
def schema_in_format(fmt_string: str) -> int:
if fmt_string == "yang":
return lib.LYS_IN_YANG
if fmt_string == "yin":
return lib.LYS_IN_YIN
raise ValueError("unknown schema input format: %r" % fmt_string)
# -------------------------------------------------------------------------------------
def schema_out_format(fmt_string: str) -> int:
if fmt_string == "yang":
return lib.LYS_OUT_YANG
if fmt_string == "yin":
return lib.LYS_OUT_YIN
if fmt_string == "tree":
return lib.LYS_OUT_TREE
raise ValueError("unknown schema output format: %r" % fmt_string)
# -------------------------------------------------------------------------------------
def printer_flags(
no_substmt: bool = False,
shrink: bool = False,
) -> int:
flags = 0
if no_substmt:
flags |= lib.LYS_PRINT_NO_SUBSTMT
if shrink:
flags |= lib.LYS_PRINT_SHRINK
return flags
# -------------------------------------------------------------------------------------
class Module:
__slots__ = ("context", "cdata", "__dict__")
def __init__(self, context: "libyang.Context", cdata):
self.context = context
self.cdata = cdata # C type: "struct lys_module *"
def name(self) -> str:
return c2str(self.cdata.name)
def prefix(self) -> str:
return c2str(self.cdata.prefix)
def description(self) -> Optional[str]:
return c2str(self.cdata.dsc)
def filepath(self) -> Optional[str]:
return c2str(self.cdata.filepath)
def implemented(self) -> bool:
return bool(self.cdata.implemented)
def feature_enable(self, name: str) -> None:
p = str2c(name)
q = ffi.new("char *[2]", [p, ffi.NULL])
ret = lib.lys_set_implemented(self.cdata, q)
if ret != lib.LY_SUCCESS:
raise self.context.error("no such feature: %r" % name)
def feature_enable_all(self) -> None:
self.feature_enable("*")
def feature_disable_all(self) -> None:
val = ffi.new("char **", ffi.NULL)
ret = lib.lys_set_implemented(self.cdata, val)
if ret != lib.LY_SUCCESS:
raise self.context.error("cannot disable all features")
def feature_state(self, name: str) -> bool:
ret = lib.lys_feature_value(self.cdata, str2c(name))
if ret == lib.LY_SUCCESS:
return True
if ret == lib.LY_ENOT:
return False
raise self.context.error("no such feature: %r" % name)
def features(self) -> Iterator["Feature"]:
features_list = []
f = ffi.NULL
idx = ffi.new("uint32_t *")
while True:
f = lib.lysp_feature_next(f, self.cdata.parsed, idx)
if f == ffi.NULL:
break
features_list.append(f)
for i in features_list:
yield Feature(self.context, i)
def compiled_enabled_features(self) -> Iterator[str]:
if self.cdata.compiled:
for f in ly_array_iter(self.cdata.compiled.features):
yield c2str(f)
def get_feature(self, name: str) -> "Feature":
for f in self.features():
if f.name() == name:
return f
raise self.context.error("no such feature: %r" % name)
def revisions(self) -> Iterator["Revision"]:
for revision in ly_array_iter(self.cdata.parsed.revs):
yield Revision(self.context, revision, self)
def typedefs(self) -> Iterator["Typedef"]:
for typedef in ly_array_iter(self.cdata.parsed.typedefs):
yield Typedef(self.context, typedef)
def get_typedef(self, name: str) -> Optional["Typedef"]:
for typedef in self.typedefs():
if typedef.name() != name:
continue
return typedef
return None
def imports(self) -> Iterator["Import"]:
for i in ly_array_iter(self.cdata.parsed.imports):
yield Import(self.context, i, self)
def get_module_from_prefix(self, prefix: str) -> Optional["Module"]:
for i in self.imports():
if i.prefix() != prefix:
continue
return self.context.get_module(i.name())
return None
def __iter__(self) -> Iterator["SNode"]:
return self.children()
def children(
self, types: Optional[Tuple[int, ...]] = None, with_choice: bool = False
) -> Iterator["SNode"]:
return iter_children(
self.context, self.cdata, types=types, with_choice=with_choice
)
def parsed_children(self) -> Iterator["PNode"]:
for c in ly_list_iter(self.cdata.parsed.data):
yield PNode.new(self.context, c, self)
def groupings(self) -> Iterator["PGrouping"]:
for g in ly_list_iter(self.cdata.parsed.groupings):
yield PGrouping(self.context, g, self)
def augments(self) -> Iterator["PAugment"]:
for a in ly_array_iter(self.cdata.parsed.augments):
yield PAugment(self.context, a, self)
def actions(self) -> Iterator["PAction"]:
for a in ly_list_iter(self.cdata.parsed.rpcs):
yield PAction(self.context, a, self)
def notifications(self) -> Iterator["PNotif"]:
for n in ly_list_iter(self.cdata.parsed.notifs):
yield PNotif(self.context, n, self)
def identities(self) -> Iterator["Identity"]:
for i in ly_array_iter(self.cdata.identities):
yield Identity(self.context, i)
def parsed_identities(self) -> Iterator["PIdentity"]:
for i in ly_array_iter(self.cdata.parsed.identities):
yield PIdentity(self.context, i, self)
def extensions(self) -> Iterator["ExtensionCompiled"]:
compiled = ffi.cast("struct lysc_module *", self.cdata.compiled)
if compiled == ffi.NULL:
return
exts = ffi.cast("struct lysc_ext_instance *", self.cdata.compiled.exts)
if exts == ffi.NULL:
return
for extension in ly_array_iter(exts):
yield ExtensionCompiled(self.context, extension)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional["ExtensionCompiled"]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def __str__(self) -> str:
return self.name()
def print(
self,
fmt: str,
out_type: IOType,
out_target: Union[IO, str, None] = None,
printer_no_substmt: bool = False,
printer_shrink: bool = False,
) -> Union[str, bytes, None]:
fmt = schema_out_format(fmt)
flags = printer_flags(no_substmt=printer_no_substmt, shrink=printer_shrink)
out_data = ffi.new("struct ly_out **")
ret, output = init_output(out_type, out_target, out_data)
if ret != lib.LY_SUCCESS:
raise self.context.error("failed to initialize output target")
ret = lib.lys_print_module(out_data[0], self.cdata, fmt, 0, flags)
if output is not None:
tmp = output[0]
output = c2str(tmp)
lib.free(tmp)
lib.ly_out_free(out_data[0], ffi.NULL, False)
if ret != lib.LY_SUCCESS:
raise self.context.error("failed to write data")
return output
def print_mem(
self,
fmt: str = "tree",
printer_no_substmt: bool = False,
printer_shrink: bool = False,
) -> Union[str, bytes]:
return self.print(
fmt,
IOType.MEMORY,
None,
printer_no_substmt=printer_no_substmt,
printer_shrink=printer_shrink,
)
def print_file(
self,
fileobj: IO,
fmt: str = "tree",
printer_no_substmt: bool = False,
printer_shrink: bool = False,
) -> None:
return self.print(
fmt,
IOType.FD,
fileobj,
printer_no_substmt=printer_no_substmt,
printer_shrink=printer_shrink,
)
def parse_data_dict(
self,
dic: Dict[str, Any],
no_state: bool = False,
validate_present: bool = False,
validate: bool = True,
strict: bool = False,
rpc: bool = False,
rpcreply: bool = False,
notification: bool = False,
store_only: bool = False,
) -> "libyang.data.DNode":
"""
Convert a python dictionary to a DNode object following the schema of this
module. The returned value is always a top-level data node (i.e.: without
parent).
:arg dic:
The python dictionary to convert.
:arg no_state:
Consider state data not allowed and raise an error during validation if they are found.
:arg validate_present:
Validate result of the operation against schema.
:arg validate:
Run validation on result of the operation.
:arg strict:
Instead of ignoring data without schema definition, raise an error.
:arg rpc:
Data represents RPC or action input parameters.
:arg rpcreply:
Data represents RPC or action output parameters.
:arg notification:
Data represents a NETCONF notification.
"""
from .data import dict_to_dnode # circular import
return dict_to_dnode(
dic,
self,
no_state=no_state,
validate_present=validate_present,
validate=validate,
strict=strict,
rpc=rpc,
rpcreply=rpcreply,
notification=notification,
store_only=store_only,
)
# -------------------------------------------------------------------------------------
class Revision:
__slots__ = ("context", "cdata", "module", "__dict__")
def __init__(self, context: "libyang.Context", cdata, module):
self.context = context
self.cdata = cdata # C type: "struct lysp_revision *"
self.module = module
def date(self) -> str:
return c2str(self.cdata.date)
def description(self) -> Optional[str]:
return c2str(self.cdata.dsc)
def reference(self) -> Optional[str]:
return c2str(self.cdata.ref)
def extensions(self) -> Iterator["ExtensionParsed"]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionParsed(self.context, ext, self.module)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional["ExtensionParsed"]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def __repr__(self):
cls = self.__class__
return "<%s.%s: %s>" % (cls.__module__, cls.__name__, str(self))
def __str__(self):
return self.date()
# -------------------------------------------------------------------------------------
class Import:
__slots__ = ("context", "cdata", "module", "__dict__")
def __init__(self, context: "libyang.Context", cdata, module):
self.context = context
self.cdata = cdata # C type: "struct lysp_import *"
self.module = module
def name(self) -> str:
return c2str(self.cdata.name)
def prefix(self) -> Optional[str]:
return c2str(self.cdata.prefix)
def description(self) -> Optional[str]:
return c2str(self.cdata.dsc)
def reference(self) -> Optional[str]:
return c2str(self.cdata.ref)
def extensions(self) -> Iterator["ExtensionParsed"]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionParsed(self.context, ext, self.module)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional["ExtensionParsed"]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def __repr__(self):
cls = self.__class__
return "<%s.%s: %s>" % (cls.__module__, cls.__name__, str(self))
def __str__(self):
return self.name()
# -------------------------------------------------------------------------------------
class Extension:
__slots__ = ("context", "cdata", "__dict__")
def __init__(self, context: "libyang.Context", cdata):
self.context = context
self.cdata = cdata
def argument(self) -> Optional[str]:
return c2str(self.cdata.argument)
def name(self) -> str:
return str(self.cdata)
def __repr__(self):
cls = self.__class__
return "<%s.%s: %s>" % (cls.__module__, cls.__name__, str(self))
def __str__(self):
return self.name()
# -------------------------------------------------------------------------------------
class ExtensionParsed(Extension):
__slots__ = ("module_parent",)
def __init__(self, context: "libyang.Context", cdata, module_parent: Module = None):
super().__init__(context, cdata)
self.module_parent = module_parent
def _module_from_parsed(self) -> Module:
prefix = c2str(self.cdata.name).split(":")[0]
if self.module_parent is None:
raise self.context.error("cannot get module")
for cdata_imp_mod in ly_array_iter(self.module_parent.cdata.parsed.imports):
if ffi.string(cdata_imp_mod.prefix).decode() == prefix:
return Module(self.context, cdata_imp_mod.module)
raise self.context.error("cannot get module")
def name(self) -> str:
return c2str(self.cdata.name).split(":")[1]
def module(self) -> Module:
return self._module_from_parsed()
def parent_node(
self,
) -> Optional[Union["PNode", "PIdentity", "PRefine", "PType", "PEnum"]]:
if self.cdata.parent_stmt == lib.LY_STMT_IDENTITY:
cdata = ffi.cast("struct lysp_ident *", self.cdata.parent)
return PIdentity(self.context, cdata, self.module_parent)
if self.cdata.parent_stmt == lib.LY_STMT_REFINE:
cdata = ffi.cast("struct lysp_refine *", self.cdata.parent)
return PRefine(self.context, cdata, self.module_parent)
if self.cdata.parent_stmt == lib.LY_STMT_TYPE:
cdata = ffi.cast("struct lysp_type *", self.cdata.parent)
return PType(self.context, cdata, self.module_parent)
if self.cdata.parent_stmt == lib.LY_STMT_ENUM:
cdata = ffi.cast("struct lysp_type_enum *", self.cdata.parent)
return PEnum(self.context, cdata, self.module_parent)
if bool(self.cdata.parent_stmt & lib.LY_STMT_NODE_MASK):
try:
return PNode.new(self.context, self.cdata.parent, self.module_parent)
except LibyangError:
return None
return None
def extensions(self) -> Iterator["ExtensionParsed"]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionParsed(self.context, ext, self.module_parent)
# -------------------------------------------------------------------------------------
class ExtensionCompiled(Extension):
__slots__ = ("cdata_def",)
def __init__(self, context: "libyang.Context", cdata):
super().__init__(context, cdata)
self.cdata_def = getattr(cdata, "def", None)
def name(self) -> str:
return c2str(self.cdata_def.name)
def module(self) -> Module:
if not self.cdata_def.module:
raise self.context.error("cannot get module")
return Module(self.context, self.cdata_def.module)
def parent_node(self) -> Optional[Union["SNode", "Identity"]]:
if self.cdata.parent_stmt == lib.LY_STMT_IDENTITY:
cdata = ffi.cast("struct lysc_ident *", self.cdata.parent)
return Identity(self.context, cdata)
if bool(self.cdata.parent_stmt & lib.LY_STMT_NODE_MASK):
try:
return SNode.new(self.context, self.cdata.parent)
except LibyangError:
return None
return None
def extensions(self) -> Iterator["ExtensionCompiled"]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionCompiled(self.context, ext)
# -------------------------------------------------------------------------------------
class _EnumBit:
__slots__ = ("context", "cdata", "__dict__")
def __init__(self, context: "libyang.Context", cdata):
self.context = context
self.cdata = cdata # C type "struct lys_type_bit" or "struct lys_type_enum"
def position(self) -> int:
return self.cdata.position
def value(self) -> int:
return self.cdata.value
def name(self) -> str:
return c2str(self.cdata.name)
def description(self) -> str:
return c2str(self.cdata.dsc)
def extensions(self) -> Iterator[ExtensionCompiled]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionCompiled(self.context, ext)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional[ExtensionCompiled]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def deprecated(self) -> bool:
return bool(self.cdata.flags & lib.LYS_STATUS_DEPRC)
def obsolete(self) -> bool:
return bool(self.cdata.flags & lib.LYS_STATUS_OBSLT)
def status(self) -> str:
if self.cdata.flags & lib.LYS_STATUS_OBSLT:
return "obsolete"
if self.cdata.flags & lib.LYS_STATUS_DEPRC:
return "deprecated"
return "current"
def __repr__(self):
cls = self.__class__
return "<%s.%s: %s>" % (cls.__module__, cls.__name__, self)
def __str__(self):
return self.name()
# -------------------------------------------------------------------------------------
class Enum(_EnumBit):
pass
# -------------------------------------------------------------------------------------
class Bit(_EnumBit):
pass
# -------------------------------------------------------------------------------------
class Pattern:
__slots__ = ("context", "cdata", "cdata_parsed")
def __init__(self, context: "libyang.Context", cdata, cdata_parsed=None):
self.context = context
self.cdata = cdata # C type: "struct lysc_pattern *"
self.cdata_parsed = cdata_parsed # C type: "struct lysp_restr *"
def expression(self) -> str:
if self.cdata is None and self.cdata_parsed:
return c2str(self.cdata_parsed.arg.str + 1)
return c2str(self.cdata.expr)
def inverted(self) -> bool:
if self.cdata is None and self.cdata_parsed:
return self.cdata_parsed.arg.str[0] == b"\x15"
return self.cdata.inverted
def error_message(self) -> Optional[str]:
if self.cdata is None and self.cdata_parsed:
return c2str(self.cdata_parsed.emsg)
return c2str(self.cdata.emsg) if self.cdata.emsg != ffi.NULL else None
# -------------------------------------------------------------------------------------
class Type:
__slots__ = ("context", "cdata", "cdata_parsed", "__dict__")
UNKNOWN = lib.LY_TYPE_UNKNOWN
BINARY = lib.LY_TYPE_BINARY
UINT8 = lib.LY_TYPE_UINT8
UINT16 = lib.LY_TYPE_UINT16
UINT32 = lib.LY_TYPE_UINT32
UINT64 = lib.LY_TYPE_UINT64
STRING = lib.LY_TYPE_STRING
BITS = lib.LY_TYPE_BITS
BOOL = lib.LY_TYPE_BOOL
DEC64 = lib.LY_TYPE_DEC64
EMPTY = lib.LY_TYPE_EMPTY
ENUM = lib.LY_TYPE_ENUM
IDENT = lib.LY_TYPE_IDENT
INST = lib.LY_TYPE_INST
LEAFREF = lib.LY_TYPE_LEAFREF
UNION = lib.LY_TYPE_UNION
INT8 = lib.LY_TYPE_INT8
INT16 = lib.LY_TYPE_INT16
INT32 = lib.LY_TYPE_INT32
INT64 = lib.LY_TYPE_INT64
BASENAMES = {
UNKNOWN: "unknown",
BINARY: "binary",
UINT8: "uint8",
UINT16: "uint16",
UINT32: "uint32",
UINT64: "uint64",
STRING: "string",
BITS: "bits",
BOOL: "boolean",
DEC64: "decimal64",
EMPTY: "empty",
ENUM: "enumeration",
IDENT: "identityref",
INST: "instance-id",
LEAFREF: "leafref",
UNION: "union",
INT8: "int8",
INT16: "int16",
INT32: "int32",
INT64: "int64",
}
def __init__(self, context: "libyang.Context", cdata, cdata_parsed):
self.context = context
self.cdata = cdata # C type: "struct lysc_type*"
self.cdata_parsed = cdata_parsed # C type: "struct lysp_type*"
def get_bases(self) -> Iterator["Type"]:
if self.cdata.basetype == lib.LY_TYPE_LEAFREF:
yield from self.leafref_type().get_bases()
elif self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.get_bases()
else: # builtin type
yield self
def name(self) -> str:
if self.cdata_parsed is not None and self.cdata_parsed.name:
return c2str(self.cdata_parsed.name)
return self.basename()
def description(self) -> Optional[str]:
typedef = self.typedef()
if typedef:
return typedef.description()
return None
def base(self) -> int:
return self.cdata.basetype
def bases(self) -> Iterator[int]:
for b in self.get_bases():
yield b.base()
def basename(self) -> str:
return self.BASENAMES.get(self.cdata.basetype, "unknown")
def basenames(self) -> Iterator[str]:
for b in self.get_bases():
yield b.basename()
def leafref_type(self) -> Optional["Type"]:
if self.cdata.basetype != self.LEAFREF:
return None
lr = ffi.cast("struct lysc_type_leafref *", self.cdata)
return Type(self.context, lr.realtype, None)
def leafref_path(self) -> Optional["str"]:
if self.cdata.basetype != self.LEAFREF:
return None
lr = ffi.cast("struct lysc_type_leafref *", self.cdata)
return c2str(lib.lyxp_get_expr(lr.path))
def identity_bases(self) -> Iterator["Identity"]:
if self.cdata.basetype != lib.LY_TYPE_IDENT:
return
ident = ffi.cast("struct lysc_type_identityref *", self.cdata)
for b in ly_array_iter(ident.bases):
yield Identity(self.context, b)
def typedef(self) -> "Typedef":
if ":" in self.name():
module_prefix, type_name = self.name().split(":")
import_module = self.module().get_module_from_prefix(module_prefix)
if import_module:
return import_module.get_typedef(type_name)
return None
def union_types(self, with_typedefs: bool = False) -> Iterator["Type"]:
if self.cdata.basetype != self.UNION:
return
typedef = self.typedef()
t = ffi.cast("struct lysc_type_union *", self.cdata)
if self.cdata_parsed and self.cdata_parsed.types != ffi.NULL:
for union_type, union_type_parsed in zip(
ly_array_iter(t.types), ly_array_iter(self.cdata_parsed.types)
):
yield Type(self.context, union_type, union_type_parsed)
elif (
with_typedefs
and typedef
and typedef.cdata
and typedef.cdata.type.types != ffi.NULL
):
for union_type, union_type_parsed in zip(
ly_array_iter(t.types), ly_array_iter(typedef.cdata.type.types)
):
yield Type(self.context, union_type, union_type_parsed)
else:
for union_type in ly_array_iter(t.types):
yield Type(self.context, union_type, None)
def enums(self) -> Iterator[Enum]:
if self.cdata.basetype != self.ENUM:
return
t = ffi.cast("struct lysc_type_enum *", self.cdata)
for enum in ly_array_iter(t.enums):
yield Enum(self.context, enum)
def all_enums(self) -> Iterator[Enum]:
for b in self.get_bases():
yield from b.enums()
def bits(self) -> Iterator[Bit]:
if self.cdata.basetype != self.BITS:
return
t = ffi.cast("struct lysc_type_bits *", self.cdata)
for bit in ly_array_iter(t.bits):
yield Enum(self.context, bit)
def all_bits(self) -> Iterator[Bit]:
for b in self.get_bases():
yield from b.bits()
NUM_TYPES = frozenset((INT8, INT16, INT32, INT64, UINT8, UINT16, UINT32, UINT64))
def range(self) -> Optional[str]:
if not self.cdata_parsed:
return None
if (
self.cdata.basetype in self.NUM_TYPES or self.cdata.basetype == self.DEC64
) and self.cdata_parsed.range != ffi.NULL:
return c2str(self.cdata_parsed.range.arg.str)
return None
def all_ranges(self) -> Iterator[str]:
if self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.all_ranges()
else:
rng = self.range()
if rng is not None:
yield rng
def fraction_digits(self) -> Optional[int]:
if not self.cdata_parsed:
return None
if self.cdata.basetype != self.DEC64:
return None
return self.cdata_parsed.fraction_digits
def all_fraction_digits(self) -> Iterator[int]:
if self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.all_fraction_digits()
else:
fd = self.fraction_digits()
if fd is not None:
yield fd
STR_TYPES = frozenset((STRING, BINARY, ENUM, IDENT, BITS))
def length(self) -> Optional[str]:
if not self.cdata_parsed:
return None
if (
self.cdata.basetype in (self.STRING, self.BINARY)
) and self.cdata_parsed.length != ffi.NULL:
return c2str(self.cdata_parsed.length.arg.str)
return None
def all_lengths(self) -> Iterator[str]:
if self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.all_lengths()
else:
length = self.length()
if length is not None:
yield length
def patterns(self) -> Iterator[Tuple[str, bool]]:
if not self.cdata_parsed or self.cdata.basetype != self.STRING:
return
if self.cdata_parsed.patterns == ffi.NULL:
return
for p in ly_array_iter(self.cdata_parsed.patterns):
if not p:
continue
# in case of pattern restriction, the first byte has a special meaning:
# 0x06 (ACK) for regular match and 0x15 (NACK) for invert-match
invert_match = p.arg.str[0] == b"\x15"
# yield tuples like:
# ('[a-zA-Z_][a-zA-Z0-9\-_.]*', False)
# ('[xX][mM][lL].*', True)
yield c2str(p.arg.str + 1), invert_match
def all_patterns(self) -> Iterator[Tuple[str, bool]]:
if self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.all_patterns()
else:
yield from self.patterns()
def pattern_details(self) -> Iterator[Pattern]:
if self.cdata.basetype != self.STRING:
return
t = ffi.cast("struct lysc_type_str *", self.cdata)
if t.patterns == ffi.NULL:
return
for p in ly_array_iter(t.patterns):
if not p:
continue
yield Pattern(self.context, p)
def all_pattern_details(self) -> Iterator[Pattern]:
if self.cdata.basetype == lib.LY_TYPE_UNION:
for t in self.union_types():
yield from t.all_pattern_details()
else:
yield from self.pattern_details()
def require_instance(self) -> Optional[bool]:
if self.cdata.basetype != self.LEAFREF:
return None
t = ffi.cast("struct lysc_type_leafref *", self.cdata)
return bool(t.require_instance)
def module(self) -> Module:
if not self.cdata_parsed:
return None
return Module(self.context, self.cdata_parsed.pmod.mod)
def extensions(self) -> Iterator[ExtensionCompiled]:
for extension in ly_array_iter(self.cdata.exts):
yield ExtensionCompiled(self.context, extension)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional[ExtensionCompiled]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def __repr__(self):
cls = self.__class__
return "<%s.%s: %s>" % (cls.__module__, cls.__name__, str(self))
def __str__(self):
return self.name()
def parsed(self) -> Optional["PType"]:
if self.cdata_parsed is None or self.cdata_parsed == ffi.NULL:
return None
return PType(self.context, self.cdata_parsed, self.module())
# -------------------------------------------------------------------------------------
class Typedef:
__slots__ = ("context", "cdata", "__dict__")
def __init__(self, context: "libyang.Context", cdata):
self.context = context
self.cdata = cdata # C type: "struct lysp_tpdf *"
def name(self) -> str:
return c2str(self.cdata.name)
def description(self) -> Optional[str]:
return c2str(self.cdata.dsc)
def units(self) -> Optional[str]:
return c2str(self.cdata.units)
def reference(self) -> Optional[str]:
return c2str(self.cdata.ref)
def extensions(self) -> Iterator[ExtensionCompiled]:
ext = ffi.cast("struct lysc_ext_instance *", self.cdata.exts)
if ext == ffi.NULL:
return
for extension in ly_array_iter(ext):
yield ExtensionCompiled(self.context, extension)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional[ExtensionCompiled]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def deprecated(self) -> bool:
return bool(self.cdata.flags & lib.LYS_STATUS_DEPRC)
def obsolete(self) -> bool:
return bool(self.cdata.flags & lib.LYS_STATUS_OBSLT)
def module(self) -> Module:
return Module(self.context, self.cdata.module)
def __str__(self):
return self.name()
# -------------------------------------------------------------------------------------
class Identity:
__slots__ = ("context", "cdata")
def __init__(self, context: "libyang.Context", cdata):
self.context = context
self.cdata = cdata # C type: "struct lysc_ident *"
def name(self) -> str:
return c2str(self.cdata.name)
def description(self) -> Optional[str]:
return c2str(self.cdata.dsc)
def reference(self) -> Optional[str]:
return c2str(self.cdata.ref)
def module(self) -> Module:
return Module(self.context, self.cdata.module)
def derived(self) -> Iterator["Identity"]:
for i in ly_array_iter(self.cdata.derived):
yield Identity(self.context, i)
def extensions(self) -> Iterator[ExtensionCompiled]:
for ext in ly_array_iter(self.cdata.exts):
yield ExtensionCompiled(self.context, ext)
def get_extension(
self, name: str, prefix: Optional[str] = None, arg_value: Optional[str] = None
) -> Optional[ExtensionCompiled]:
for ext in self.extensions():
if ext.name() != name:
continue
if prefix is not None and ext.module().name() != prefix:
continue
if arg_value is not None and ext.argument() != arg_value:
continue
return ext
return None
def deprecated(self) -> bool:
return bool(self.cdata.flags & lib.LYS_STATUS_DEPRC)