Merge commit '0f6aab9da6fe982218a01f4a5b896e65fcced437' as 'third_party/flatbuffers'

third_party/flatbuffers/python/.gitignore

@@ -0,0 +1,2 @@
+/dist/
+/*.egg-info/

third_party/flatbuffers/python/flatbuffers/__init__.py

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+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from .builder import Builder
+from .table import Table
+from .compat import range_func as compat_range
+from ._version import __version__
+from . import util

third_party/flatbuffers/python/flatbuffers/_version.py

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+# Copyright 2019 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Placeholder, to be updated during the release process
+# by the setup.py
+__version__ = u"24.3.25"

third_party/flatbuffers/python/flatbuffers/builder.py

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+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import number_types as N
+from .number_types import (UOffsetTFlags, SOffsetTFlags, VOffsetTFlags)
+
+from . import encode
+from . import packer
+
+from . import compat
+from .compat import range_func
+from .compat import memoryview_type
+from .compat import import_numpy, NumpyRequiredForThisFeature
+
+import warnings
+
+np = import_numpy()
+## @file
+## @addtogroup flatbuffers_python_api
+## @{
+
+## @cond FLATBUFFERS_INTERNAL
+class OffsetArithmeticError(RuntimeError):
+    """
+    Error caused by an Offset arithmetic error. Probably caused by bad
+    writing of fields. This is considered an unreachable situation in
+    normal circumstances.
+    """
+    pass
+
+
+class IsNotNestedError(RuntimeError):
+    """
+    Error caused by using a Builder to write Object data when not inside
+    an Object.
+    """
+    pass
+
+
+class IsNestedError(RuntimeError):
+    """
+    Error caused by using a Builder to begin an Object when an Object is
+    already being built.
+    """
+    pass
+
+
+class StructIsNotInlineError(RuntimeError):
+    """
+    Error caused by using a Builder to write a Struct at a location that
+    is not the current Offset.
+    """
+    pass
+
+
+class BuilderSizeError(RuntimeError):
+    """
+    Error caused by causing a Builder to exceed the hardcoded limit of 2
+    gigabytes.
+    """
+    pass
+
+class BuilderNotFinishedError(RuntimeError):
+    """
+    Error caused by not calling `Finish` before calling `Output`.
+    """
+    pass
+
+class EndVectorLengthMismatched(RuntimeError):
+    """
+    The number of elements passed to EndVector does not match the number 
+    specified in StartVector.
+    """
+    pass
+
+
+# VtableMetadataFields is the count of metadata fields in each vtable.
+VtableMetadataFields = 2
+## @endcond
+
+class Builder(object):
+    """ A Builder is used to construct one or more FlatBuffers.
+
+    Typically, Builder objects will be used from code generated by the `flatc`
+    compiler.
+
+    A Builder constructs byte buffers in a last-first manner for simplicity and
+    performance during reading.
+
+    Internally, a Builder is a state machine for creating FlatBuffer objects.
+
+    It holds the following internal state:
+        - Bytes: an array of bytes.
+        - current_vtable: a list of integers.
+        - vtables: a hash of vtable entries.
+
+    Attributes:
+      Bytes: The internal `bytearray` for the Builder.
+      finished: A boolean determining if the Builder has been finalized.
+    """
+
+    ## @cond FLATBUFFERS_INTENRAL
+    __slots__ = ("Bytes", "current_vtable", "head", "minalign", "objectEnd",
+                 "vtables", "nested", "forceDefaults", "finished", "vectorNumElems",
+                 "sharedStrings")
+
+    """Maximum buffer size constant, in bytes.
+
+    Builder will never allow it's buffer grow over this size.
+    Currently equals 2Gb.
+    """
+    MAX_BUFFER_SIZE = 2**31
+    ## @endcond
+
+    def __init__(self, initialSize=1024):
+        """Initializes a Builder of size `initial_size`.
+
+        The internal buffer is grown as needed.
+        """
+
+        if not (0 <= initialSize <= Builder.MAX_BUFFER_SIZE):
+            msg = "flatbuffers: Cannot create Builder larger than 2 gigabytes."
+            raise BuilderSizeError(msg)
+
+        self.Bytes = bytearray(initialSize)
+        ## @cond FLATBUFFERS_INTERNAL
+        self.current_vtable = None
+        self.head = UOffsetTFlags.py_type(initialSize)
+        self.minalign = 1
+        self.objectEnd = None
+        self.vtables = {}
+        self.nested = False
+        self.forceDefaults = False
+        self.sharedStrings = {}
+        ## @endcond
+        self.finished = False
+
+    def Clear(self) -> None:
+        ## @cond FLATBUFFERS_INTERNAL
+        self.current_vtable = None
+        self.head = UOffsetTFlags.py_type(len(self.Bytes))
+        self.minalign = 1
+        self.objectEnd = None
+        self.vtables = {}
+        self.nested = False
+        self.forceDefaults = False
+        self.sharedStrings = {}
+        self.vectorNumElems = None
+        ## @endcond
+        self.finished = False
+
+    def Output(self):
+        """Return the portion of the buffer that has been used for writing data.
+
+        This is the typical way to access the FlatBuffer data inside the
+        builder. If you try to access `Builder.Bytes` directly, you would need
+        to manually index it with `Head()`, since the buffer is constructed
+        backwards.
+
+        It raises BuilderNotFinishedError if the buffer has not been finished
+        with `Finish`.
+        """
+
+        if not self.finished:
+            raise BuilderNotFinishedError()
+
+        return self.Bytes[self.Head():]
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def StartObject(self, numfields):
+        """StartObject initializes bookkeeping for writing a new object."""
+
+        self.assertNotNested()
+
+        # use 32-bit offsets so that arithmetic doesn't overflow.
+        self.current_vtable = [0 for _ in range_func(numfields)]
+        self.objectEnd = self.Offset()
+        self.nested = True
+
+    def WriteVtable(self):
+        """
+        WriteVtable serializes the vtable for the current object, if needed.
+
+        Before writing out the vtable, this checks pre-existing vtables for
+        equality to this one. If an equal vtable is found, point the object to
+        the existing vtable and return.
+
+        Because vtable values are sensitive to alignment of object data, not
+        all logically-equal vtables will be deduplicated.
+
+        A vtable has the following format:
+          <VOffsetT: size of the vtable in bytes, including this value>
+          <VOffsetT: size of the object in bytes, including the vtable offset>
+          <VOffsetT: offset for a field> * N, where N is the number of fields
+                     in the schema for this type. Includes deprecated fields.
+        Thus, a vtable is made of 2 + N elements, each VOffsetT bytes wide.
+
+        An object has the following format:
+          <SOffsetT: offset to this object's vtable (may be negative)>
+          <byte: data>+
+        """
+
+        # Prepend a zero scalar to the object. Later in this function we'll
+        # write an offset here that points to the object's vtable:
+        self.PrependSOffsetTRelative(0)
+
+        objectOffset = self.Offset()
+
+        vtKey = []
+        trim = True
+        for elem in reversed(self.current_vtable):
+            if elem == 0:
+                if trim:
+                    continue
+            else:
+                elem = objectOffset - elem
+                trim = False
+
+            vtKey.append(elem)
+
+        vtKey = tuple(vtKey)
+        vt2Offset = self.vtables.get(vtKey)
+        if vt2Offset is None:
+            # Did not find a vtable, so write this one to the buffer.
+
+            # Write out the current vtable in reverse , because
+            # serialization occurs in last-first order:
+            i = len(self.current_vtable) - 1
+            trailing = 0
+            trim = True
+            while i >= 0:
+                off = 0
+                elem = self.current_vtable[i]
+                i -= 1
+
+                if elem == 0:
+                    if trim:
+                        trailing += 1
+                        continue
+                else:
+                    # Forward reference to field;
+                    # use 32bit number to ensure no overflow:
+                    off = objectOffset - elem
+                    trim = False
+
+                self.PrependVOffsetT(off)
+
+            # The two metadata fields are written last.
+
+            # First, store the object bytesize:
+            objectSize = UOffsetTFlags.py_type(objectOffset - self.objectEnd)
+            self.PrependVOffsetT(VOffsetTFlags.py_type(objectSize))
+
+            # Second, store the vtable bytesize:
+            vBytes = len(self.current_vtable) - trailing + VtableMetadataFields
+            vBytes *= N.VOffsetTFlags.bytewidth
+            self.PrependVOffsetT(VOffsetTFlags.py_type(vBytes))
+
+            # Next, write the offset to the new vtable in the
+            # already-allocated SOffsetT at the beginning of this object:
+            objectStart = SOffsetTFlags.py_type(len(self.Bytes) - objectOffset)
+            encode.Write(packer.soffset, self.Bytes, objectStart,
+                         SOffsetTFlags.py_type(self.Offset() - objectOffset))
+
+            # Finally, store this vtable in memory for future
+            # deduplication:
+            self.vtables[vtKey] = self.Offset()
+        else:
+            # Found a duplicate vtable.
+            objectStart = SOffsetTFlags.py_type(len(self.Bytes) - objectOffset)
+            self.head = UOffsetTFlags.py_type(objectStart)
+
+            # Write the offset to the found vtable in the
+            # already-allocated SOffsetT at the beginning of this object:
+            encode.Write(packer.soffset, self.Bytes, self.Head(),
+                         SOffsetTFlags.py_type(vt2Offset - objectOffset))
+
+        self.current_vtable = None
+        return objectOffset
+
+    def EndObject(self):
+        """EndObject writes data necessary to finish object construction."""
+        self.assertNested()
+        self.nested = False
+        return self.WriteVtable()
+
+    def growByteBuffer(self):
+        """Doubles the size of the byteslice, and copies the old data towards
+           the end of the new buffer (since we build the buffer backwards)."""
+        if len(self.Bytes) == Builder.MAX_BUFFER_SIZE:
+            msg = "flatbuffers: cannot grow buffer beyond 2 gigabytes"
+            raise BuilderSizeError(msg)
+
+        newSize = min(len(self.Bytes) * 2, Builder.MAX_BUFFER_SIZE)
+        if newSize == 0:
+            newSize = 1
+        bytes2 = bytearray(newSize)
+        bytes2[newSize-len(self.Bytes):] = self.Bytes
+        self.Bytes = bytes2
+    ## @endcond
+
+    def Head(self):
+        """Get the start of useful data in the underlying byte buffer.
+
+        Note: unlike other functions, this value is interpreted as from the
+        left.
+        """
+        ## @cond FLATBUFFERS_INTERNAL
+        return self.head
+        ## @endcond
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def Offset(self):
+        """Offset relative to the end of the buffer."""
+        return UOffsetTFlags.py_type(len(self.Bytes) - self.Head())
+
+    def Pad(self, n):
+        """Pad places zeros at the current offset."""
+        for i in range_func(n):
+            self.Place(0, N.Uint8Flags)
+
+    def Prep(self, size, additionalBytes):
+        """
+        Prep prepares to write an element of `size` after `additional_bytes`
+        have been written, e.g. if you write a string, you need to align
+        such the int length field is aligned to SizeInt32, and the string
+        data follows it directly.
+        If all you need to do is align, `additionalBytes` will be 0.
+        """
+
+        # Track the biggest thing we've ever aligned to.
+        if size > self.minalign:
+            self.minalign = size
+
+        # Find the amount of alignment needed such that `size` is properly
+        # aligned after `additionalBytes`:
+        alignSize = (~(len(self.Bytes) - self.Head() + additionalBytes)) + 1
+        alignSize &= (size - 1)
+
+        # Reallocate the buffer if needed:
+        while self.Head() < alignSize+size+additionalBytes:
+            oldBufSize = len(self.Bytes)
+            self.growByteBuffer()
+            updated_head = self.head + len(self.Bytes) - oldBufSize
+            self.head = UOffsetTFlags.py_type(updated_head)
+        self.Pad(alignSize)
+
+    def PrependSOffsetTRelative(self, off):
+        """
+        PrependSOffsetTRelative prepends an SOffsetT, relative to where it
+        will be written.
+        """
+
+        # Ensure alignment is already done:
+        self.Prep(N.SOffsetTFlags.bytewidth, 0)
+        if not (off <= self.Offset()):
+            msg = "flatbuffers: Offset arithmetic error."
+            raise OffsetArithmeticError(msg)
+        off2 = self.Offset() - off + N.SOffsetTFlags.bytewidth
+        self.PlaceSOffsetT(off2)
+    ## @endcond
+
+    def PrependUOffsetTRelative(self, off):
+        """Prepends an unsigned offset into vector data, relative to where it
+        will be written.
+        """
+
+        # Ensure alignment is already done:
+        self.Prep(N.UOffsetTFlags.bytewidth, 0)
+        if not (off <= self.Offset()):
+            msg = "flatbuffers: Offset arithmetic error."
+            raise OffsetArithmeticError(msg)
+        off2 = self.Offset() - off + N.UOffsetTFlags.bytewidth
+        self.PlaceUOffsetT(off2)
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def StartVector(self, elemSize, numElems, alignment):
+        """
+        StartVector initializes bookkeeping for writing a new vector.
+
+        A vector has the following format:
+          - <UOffsetT: number of elements in this vector>
+          - <T: data>+, where T is the type of elements of this vector.
+        """
+
+        self.assertNotNested()
+        self.nested = True
+        self.vectorNumElems = numElems
+        self.Prep(N.Uint32Flags.bytewidth, elemSize*numElems)
+        self.Prep(alignment, elemSize*numElems)  # In case alignment > int.
+        return self.Offset()
+    ## @endcond
+
+    def EndVector(self, numElems = None):
+        """EndVector writes data necessary to finish vector construction."""
+
+        self.assertNested()
+        ## @cond FLATBUFFERS_INTERNAL
+        self.nested = False
+        ## @endcond
+               
+        if numElems:
+            warnings.warn("numElems is deprecated.", 
+                          DeprecationWarning, stacklevel=2)
+            if numElems != self.vectorNumElems:
+                raise EndVectorLengthMismatched();
+
+        # we already made space for this, so write without PrependUint32
+        self.PlaceUOffsetT(self.vectorNumElems)
+        self.vectorNumElems = None
+        return self.Offset()
+
+    def CreateSharedString(self, s, encoding='utf-8', errors='strict'):
+        """
+        CreateSharedString checks if the string is already written to the buffer
+        before calling CreateString.
+        """
+
+        if s in self.sharedStrings:
+            return self.sharedStrings[s]
+
+        off = self.CreateString(s, encoding, errors)
+        self.sharedStrings[s] = off
+
+        return off
+
+    def CreateString(self, s, encoding='utf-8', errors='strict'):
+        """CreateString writes a null-terminated byte string as a vector."""
+
+        self.assertNotNested()
+        ## @cond FLATBUFFERS_INTERNAL
+        self.nested = True
+        ## @endcond
+
+        if isinstance(s, compat.string_types):
+            x = s.encode(encoding, errors)
+        elif isinstance(s, compat.binary_types):
+            x = s
+        else:
+            raise TypeError("non-string passed to CreateString")
+
+        self.Prep(N.UOffsetTFlags.bytewidth, (len(x)+1)*N.Uint8Flags.bytewidth)
+        self.Place(0, N.Uint8Flags)
+
+        l = UOffsetTFlags.py_type(len(s))
+        ## @cond FLATBUFFERS_INTERNAL
+        self.head = UOffsetTFlags.py_type(self.Head() - l)
+        ## @endcond
+        self.Bytes[self.Head():self.Head()+l] = x
+
+        self.vectorNumElems = len(x)
+        return self.EndVector()
+
+    def CreateByteVector(self, x):
+        """CreateString writes a byte vector."""
+
+        self.assertNotNested()
+        ## @cond FLATBUFFERS_INTERNAL
+        self.nested = True
+        ## @endcond
+
+        if not isinstance(x, compat.binary_types):
+            raise TypeError("non-byte vector passed to CreateByteVector")
+
+        self.Prep(N.UOffsetTFlags.bytewidth, len(x)*N.Uint8Flags.bytewidth)
+
+        l = UOffsetTFlags.py_type(len(x))
+        ## @cond FLATBUFFERS_INTERNAL
+        self.head = UOffsetTFlags.py_type(self.Head() - l)
+        ## @endcond
+        self.Bytes[self.Head():self.Head()+l] = x
+
+        self.vectorNumElems = len(x)
+        return self.EndVector()
+
+    def CreateNumpyVector(self, x):
+        """CreateNumpyVector writes a numpy array into the buffer."""
+
+        if np is None:
+            # Numpy is required for this feature
+            raise NumpyRequiredForThisFeature("Numpy was not found.")
+
+        if not isinstance(x, np.ndarray):
+            raise TypeError("non-numpy-ndarray passed to CreateNumpyVector")
+
+        if x.dtype.kind not in ['b', 'i', 'u', 'f']:
+            raise TypeError("numpy-ndarray holds elements of unsupported datatype")
+
+        if x.ndim > 1:
+            raise TypeError("multidimensional-ndarray passed to CreateNumpyVector")
+
+        self.StartVector(x.itemsize, x.size, x.dtype.alignment)
+
+        # Ensure little endian byte ordering
+        if x.dtype.str[0] == "<":
+            x_lend = x
+        else:
+            x_lend = x.byteswap(inplace=False)
+
+        # Calculate total length
+        l = UOffsetTFlags.py_type(x_lend.itemsize * x_lend.size)
+        ## @cond FLATBUFFERS_INTERNAL
+        self.head = UOffsetTFlags.py_type(self.Head() - l)
+        ## @endcond
+
+        # tobytes ensures c_contiguous ordering
+        self.Bytes[self.Head():self.Head()+l] = x_lend.tobytes(order='C')
+
+        self.vectorNumElems = x.size
+        return self.EndVector()
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def assertNested(self):
+        """
+        Check that we are in the process of building an object.
+        """
+
+        if not self.nested:
+            raise IsNotNestedError()
+
+    def assertNotNested(self):
+        """
+        Check that no other objects are being built while making this
+        object. If not, raise an exception.
+        """
+
+        if self.nested:
+            raise IsNestedError()
+
+    def assertStructIsInline(self, obj):
+        """
+        Structs are always stored inline, so need to be created right
+        where they are used. You'll get this error if you created it
+        elsewhere.
+        """
+
+        N.enforce_number(obj, N.UOffsetTFlags)
+        if obj != self.Offset():
+            msg = ("flatbuffers: Tried to write a Struct at an Offset that "
+                   "is different from the current Offset of the Builder.")
+            raise StructIsNotInlineError(msg)
+
+    def Slot(self, slotnum):
+        """
+        Slot sets the vtable key `voffset` to the current location in the
+        buffer.
+
+        """
+        self.assertNested()
+        self.current_vtable[slotnum] = self.Offset()
+    ## @endcond
+
+    def __Finish(self, rootTable, sizePrefix, file_identifier=None):
+        """Finish finalizes a buffer, pointing to the given `rootTable`."""
+        N.enforce_number(rootTable, N.UOffsetTFlags)
+
+        prepSize = N.UOffsetTFlags.bytewidth
+        if file_identifier is not None:
+            prepSize += N.Int32Flags.bytewidth
+        if sizePrefix:
+            prepSize += N.Int32Flags.bytewidth
+        self.Prep(self.minalign, prepSize)
+
+        if file_identifier is not None:
+            self.Prep(N.UOffsetTFlags.bytewidth, encode.FILE_IDENTIFIER_LENGTH)
+
+            # Convert bytes object file_identifier to an array of 4 8-bit integers,
+            # and use big-endian to enforce size compliance.
+            # https://docs.python.org/2/library/struct.html#format-characters
+            file_identifier = N.struct.unpack(">BBBB", file_identifier)
+            for i in range(encode.FILE_IDENTIFIER_LENGTH-1, -1, -1):
+                # Place the bytes of the file_identifer in reverse order:
+                self.Place(file_identifier[i], N.Uint8Flags)
+
+        self.PrependUOffsetTRelative(rootTable)
+        if sizePrefix:
+            size = len(self.Bytes) - self.Head()
+            N.enforce_number(size, N.Int32Flags)
+            self.PrependInt32(size)
+        self.finished = True
+        return self.Head()
+
+    def Finish(self, rootTable, file_identifier=None):
+        """Finish finalizes a buffer, pointing to the given `rootTable`."""
+        return self.__Finish(rootTable, False, file_identifier=file_identifier)
+
+    def FinishSizePrefixed(self, rootTable, file_identifier=None):
+        """
+        Finish finalizes a buffer, pointing to the given `rootTable`,
+        with the size prefixed.
+        """
+        return self.__Finish(rootTable, True, file_identifier=file_identifier)
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def Prepend(self, flags, off):
+        self.Prep(flags.bytewidth, 0)
+        self.Place(off, flags)
+
+    def PrependSlot(self, flags, o, x, d):
+        if x is not None:
+            N.enforce_number(x, flags)
+        if d is not None:
+            N.enforce_number(d, flags)
+        if x != d or (self.forceDefaults and d is not None):
+            self.Prepend(flags, x)
+            self.Slot(o)
+
+    def PrependBoolSlot(self, *args): self.PrependSlot(N.BoolFlags, *args)
+
+    def PrependByteSlot(self, *args): self.PrependSlot(N.Uint8Flags, *args)
+
+    def PrependUint8Slot(self, *args): self.PrependSlot(N.Uint8Flags, *args)
+
+    def PrependUint16Slot(self, *args): self.PrependSlot(N.Uint16Flags, *args)
+
+    def PrependUint32Slot(self, *args): self.PrependSlot(N.Uint32Flags, *args)
+
+    def PrependUint64Slot(self, *args): self.PrependSlot(N.Uint64Flags, *args)
+
+    def PrependInt8Slot(self, *args): self.PrependSlot(N.Int8Flags, *args)
+
+    def PrependInt16Slot(self, *args): self.PrependSlot(N.Int16Flags, *args)
+
+    def PrependInt32Slot(self, *args): self.PrependSlot(N.Int32Flags, *args)
+
+    def PrependInt64Slot(self, *args): self.PrependSlot(N.Int64Flags, *args)
+
+    def PrependFloat32Slot(self, *args): self.PrependSlot(N.Float32Flags,
+                                                          *args)
+
+    def PrependFloat64Slot(self, *args): self.PrependSlot(N.Float64Flags,
+                                                          *args)
+
+    def PrependUOffsetTRelativeSlot(self, o, x, d):
+        """
+        PrependUOffsetTRelativeSlot prepends an UOffsetT onto the object at
+        vtable slot `o`. If value `x` equals default `d`, then the slot will
+        be set to zero and no other data will be written.
+        """
+
+        if x != d or self.forceDefaults:
+            self.PrependUOffsetTRelative(x)
+            self.Slot(o)
+
+    def PrependStructSlot(self, v, x, d):
+        """
+        PrependStructSlot prepends a struct onto the object at vtable slot `o`.
+        Structs are stored inline, so nothing additional is being added.
+        In generated code, `d` is always 0.
+        """
+
+        N.enforce_number(d, N.UOffsetTFlags)
+        if x != d:
+            self.assertStructIsInline(x)
+            self.Slot(v)
+
+    ## @endcond
+
+    def PrependBool(self, x):
+        """Prepend a `bool` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.BoolFlags, x)
+
+    def PrependByte(self, x):
+        """Prepend a `byte` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Uint8Flags, x)
+
+    def PrependUint8(self, x):
+        """Prepend an `uint8` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Uint8Flags, x)
+
+    def PrependUint16(self, x):
+        """Prepend an `uint16` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Uint16Flags, x)
+
+    def PrependUint32(self, x):
+        """Prepend an `uint32` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Uint32Flags, x)
+
+    def PrependUint64(self, x):
+        """Prepend an `uint64` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Uint64Flags, x)
+
+    def PrependInt8(self, x):
+        """Prepend an `int8` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Int8Flags, x)
+
+    def PrependInt16(self, x):
+        """Prepend an `int16` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Int16Flags, x)
+
+    def PrependInt32(self, x):
+        """Prepend an `int32` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Int32Flags, x)
+
+    def PrependInt64(self, x):
+        """Prepend an `int64` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Int64Flags, x)
+
+    def PrependFloat32(self, x):
+        """Prepend a `float32` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Float32Flags, x)
+
+    def PrependFloat64(self, x):
+        """Prepend a `float64` to the Builder buffer.
+
+        Note: aligns and checks for space.
+        """
+        self.Prepend(N.Float64Flags, x)
+
+    def ForceDefaults(self, forceDefaults):
+        """
+        In order to save space, fields that are set to their default value
+        don't get serialized into the buffer. Forcing defaults provides a
+        way to manually disable this optimization. When set to `True`, will
+        always serialize default values.
+        """
+        self.forceDefaults = forceDefaults
+
+##############################################################
+
+    ## @cond FLATBUFFERS_INTERNAL
+    def PrependVOffsetT(self, x): self.Prepend(N.VOffsetTFlags, x)
+
+    def Place(self, x, flags):
+        """
+        Place prepends a value specified by `flags` to the Builder,
+        without checking for available space.
+        """
+
+        N.enforce_number(x, flags)
+        self.head = self.head - flags.bytewidth
+        encode.Write(flags.packer_type, self.Bytes, self.Head(), x)
+
+    def PlaceVOffsetT(self, x):
+        """PlaceVOffsetT prepends a VOffsetT to the Builder, without checking
+        for space.
+        """
+        N.enforce_number(x, N.VOffsetTFlags)
+        self.head = self.head - N.VOffsetTFlags.bytewidth
+        encode.Write(packer.voffset, self.Bytes, self.Head(), x)
+
+    def PlaceSOffsetT(self, x):
+        """PlaceSOffsetT prepends a SOffsetT to the Builder, without checking
+        for space.
+        """
+        N.enforce_number(x, N.SOffsetTFlags)
+        self.head = self.head - N.SOffsetTFlags.bytewidth
+        encode.Write(packer.soffset, self.Bytes, self.Head(), x)
+
+    def PlaceUOffsetT(self, x):
+        """PlaceUOffsetT prepends a UOffsetT to the Builder, without checking
+        for space.
+        """
+        N.enforce_number(x, N.UOffsetTFlags)
+        self.head = self.head - N.UOffsetTFlags.bytewidth
+        encode.Write(packer.uoffset, self.Bytes, self.Head(), x)
+    ## @endcond
+
+## @cond FLATBUFFERS_INTERNAL
+def vtableEqual(a, objectStart, b):
+    """vtableEqual compares an unwritten vtable to a written vtable."""
+
+    N.enforce_number(objectStart, N.UOffsetTFlags)
+
+    if len(a) * N.VOffsetTFlags.bytewidth != len(b):
+        return False
+
+    for i, elem in enumerate(a):
+        x = encode.Get(packer.voffset, b, i * N.VOffsetTFlags.bytewidth)
+
+        # Skip vtable entries that indicate a default value.
+        if x == 0 and elem == 0:
+            pass
+        else:
+            y = objectStart - elem
+            if x != y:
+                return False
+    return True
+## @endcond
+## @}

third_party/flatbuffers/python/flatbuffers/compat.py

@@ -0,0 +1,86 @@
+# Copyright 2016 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+""" A tiny version of `six` to help with backwards compability. Also includes
+ compatibility helpers for numpy. """
+
+import sys
+
+PY2 = sys.version_info[0] == 2
+PY26 = sys.version_info[0:2] == (2, 6)
+PY27 = sys.version_info[0:2] == (2, 7)
+PY275 = sys.version_info[0:3] >= (2, 7, 5)
+PY3 = sys.version_info[0] == 3
+PY34 = sys.version_info[0:2] >= (3, 4)
+
+if PY3:
+    import importlib.machinery
+    string_types = (str,)
+    binary_types = (bytes,bytearray)
+    range_func = range
+    memoryview_type = memoryview
+    struct_bool_decl = "?"
+else:
+    import imp
+    string_types = (unicode,)
+    if PY26 or PY27:
+        binary_types = (str,bytearray)
+    else:
+        binary_types = (str,)
+    range_func = xrange
+    if PY26 or (PY27 and not PY275):
+        memoryview_type = buffer
+        struct_bool_decl = "<b"
+    else:
+        memoryview_type = memoryview
+        struct_bool_decl = "?"
+
+# Helper functions to facilitate making numpy optional instead of required
+
+def import_numpy():
+    """
+    Returns the numpy module if it exists on the system,
+    otherwise returns None.
+    """
+    if PY3:
+        numpy_exists = (
+            importlib.machinery.PathFinder.find_spec('numpy') is not None)
+    else:
+        try:
+            imp.find_module('numpy')
+            numpy_exists = True
+        except ImportError:
+            numpy_exists = False
+
+    if numpy_exists:
+        # We do this outside of try/except block in case numpy exists
+        # but is not installed correctly. We do not want to catch an
+        # incorrect installation which would manifest as an
+        # ImportError.
+        import numpy as np
+    else:
+        np = None
+
+    return np
+
+
+class NumpyRequiredForThisFeature(RuntimeError):
+    """
+    Error raised when user tries to use a feature that
+    requires numpy without having numpy installed.
+    """
+    pass
+
+
+# NOTE: Future Jython support may require code here (look at `six`).

third_party/flatbuffers/python/flatbuffers/encode.py

@@ -0,0 +1,42 @@
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import number_types as N
+from . import packer
+from .compat import memoryview_type
+from .compat import import_numpy, NumpyRequiredForThisFeature
+
+np = import_numpy()
+
+FILE_IDENTIFIER_LENGTH=4
+
+def Get(packer_type, buf, head):
+    """ Get decodes a value at buf[head] using `packer_type`. """
+    return packer_type.unpack_from(memoryview_type(buf), head)[0]
+
+
+def GetVectorAsNumpy(numpy_type, buf, count, offset):
+    """ GetVecAsNumpy decodes values starting at buf[head] as
+    `numpy_type`, where `numpy_type` is a numpy dtype. """
+    if np is not None:
+        # TODO: could set .flags.writeable = False to make users jump through
+        #       hoops before modifying...
+        return np.frombuffer(buf, dtype=numpy_type, count=count, offset=offset)
+    else:
+        raise NumpyRequiredForThisFeature('Numpy was not found.')
+
+
+def Write(packer_type, buf, head, n):
+    """ Write encodes `n` at buf[head] using `packer_type`. """
+    packer_type.pack_into(buf, head, n)

third_party/flatbuffers/python/flatbuffers/number_types.py

@@ -0,0 +1,181 @@
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import collections
+import struct
+
+from . import packer
+from .compat import import_numpy, NumpyRequiredForThisFeature
+
+np = import_numpy()
+
+# For reference, see:
+# https://docs.python.org/2/library/ctypes.html#ctypes-fundamental-data-types-2
+
+# These classes could be collections.namedtuple instances, but those are new
+# in 2.6 and we want to work towards 2.5 compatability.
+
+class BoolFlags(object):
+    bytewidth = 1
+    min_val = False
+    max_val = True
+    py_type = bool
+    name = "bool"
+    packer_type = packer.boolean
+
+
+class Uint8Flags(object):
+    bytewidth = 1
+    min_val = 0
+    max_val = (2**8) - 1
+    py_type = int
+    name = "uint8"
+    packer_type = packer.uint8
+
+
+class Uint16Flags(object):
+    bytewidth = 2
+    min_val = 0
+    max_val = (2**16) - 1
+    py_type = int
+    name = "uint16"
+    packer_type = packer.uint16
+
+
+class Uint32Flags(object):
+    bytewidth = 4
+    min_val = 0
+    max_val = (2**32) - 1
+    py_type = int
+    name = "uint32"
+    packer_type = packer.uint32
+
+
+class Uint64Flags(object):
+    bytewidth = 8
+    min_val = 0
+    max_val = (2**64) - 1
+    py_type = int
+    name = "uint64"
+    packer_type = packer.uint64
+
+
+class Int8Flags(object):
+    bytewidth = 1
+    min_val = -(2**7)
+    max_val = (2**7) - 1
+    py_type = int
+    name = "int8"
+    packer_type = packer.int8
+
+
+class Int16Flags(object):
+    bytewidth = 2
+    min_val = -(2**15)
+    max_val = (2**15) - 1
+    py_type = int
+    name = "int16"
+    packer_type = packer.int16
+
+
+class Int32Flags(object):
+    bytewidth = 4
+    min_val = -(2**31)
+    max_val = (2**31) - 1
+    py_type = int
+    name = "int32"
+    packer_type = packer.int32
+
+
+class Int64Flags(object):
+    bytewidth = 8
+    min_val = -(2**63)
+    max_val = (2**63) - 1
+    py_type = int
+    name = "int64"
+    packer_type = packer.int64
+
+
+class Float32Flags(object):
+    bytewidth = 4
+    min_val = None
+    max_val = None
+    py_type = float
+    name = "float32"
+    packer_type = packer.float32
+
+
+class Float64Flags(object):
+    bytewidth = 8
+    min_val = None
+    max_val = None
+    py_type = float
+    name = "float64"
+    packer_type = packer.float64
+
+
+class SOffsetTFlags(Int32Flags):
+    pass
+
+
+class UOffsetTFlags(Uint32Flags):
+    pass
+
+
+class VOffsetTFlags(Uint16Flags):
+    pass
+
+
+def valid_number(n, flags):
+    if flags.min_val is None and flags.max_val is None:
+        return True
+    return flags.min_val <= n <= flags.max_val
+
+
+def enforce_number(n, flags):
+    if flags.min_val is None and flags.max_val is None:
+        return
+    if not flags.min_val <= n <= flags.max_val:
+        raise TypeError("bad number %s for type %s" % (str(n), flags.name))
+
+
+def float32_to_uint32(n):
+    packed = struct.pack("<1f", n)
+    (converted,) = struct.unpack("<1L", packed)
+    return converted
+
+
+def uint32_to_float32(n):
+    packed = struct.pack("<1L", n)
+    (unpacked,) = struct.unpack("<1f", packed)
+    return unpacked
+
+
+def float64_to_uint64(n):
+    packed = struct.pack("<1d", n)
+    (converted,) = struct.unpack("<1Q", packed)
+    return converted
+
+
+def uint64_to_float64(n):
+    packed = struct.pack("<1Q", n)
+    (unpacked,) = struct.unpack("<1d", packed)
+    return unpacked
+
+
+def to_numpy_type(number_type):
+    if np is not None:
+        return np.dtype(number_type.name).newbyteorder('<')
+    else:
+        raise NumpyRequiredForThisFeature('Numpy was not found.')

third_party/flatbuffers/python/flatbuffers/packer.py

@@ -0,0 +1,42 @@
+# Copyright 2016 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Provide pre-compiled struct packers for encoding and decoding.
+
+See: https://docs.python.org/2/library/struct.html#format-characters
+"""
+
+import struct
+from . import compat
+
+
+boolean = struct.Struct(compat.struct_bool_decl)
+
+uint8 = struct.Struct("<B")
+uint16 = struct.Struct("<H")
+uint32 = struct.Struct("<I")
+uint64 = struct.Struct("<Q")
+
+int8 = struct.Struct("<b")
+int16 = struct.Struct("<h")
+int32 = struct.Struct("<i")
+int64 = struct.Struct("<q")
+
+float32 = struct.Struct("<f")
+float64 = struct.Struct("<d")
+
+uoffset = uint32
+soffset = int32
+voffset = uint16

third_party/flatbuffers/python/flatbuffers/reflection/AdvancedFeatures.py

@@ -0,0 +1,10 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+# New schema language features that are not supported by old code generators.
+class AdvancedFeatures(object):
+    AdvancedArrayFeatures = 1
+    AdvancedUnionFeatures = 2
+    OptionalScalars = 4
+    DefaultVectorsAndStrings = 8

third_party/flatbuffers/python/flatbuffers/reflection/BaseType.py

@@ -0,0 +1,25 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+class BaseType(object):
+    None_ = 0
+    UType = 1
+    Bool = 2
+    Byte = 3
+    UByte = 4
+    Short = 5
+    UShort = 6
+    Int = 7
+    UInt = 8
+    Long = 9
+    ULong = 10
+    Float = 11
+    Double = 12
+    String = 13
+    Vector = 14
+    Obj = 15
+    Union = 16
+    Array = 17
+    Vector64 = 18
+    MaxBaseType = 19

third_party/flatbuffers/python/flatbuffers/reflection/Enum.py

@@ -0,0 +1,204 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Enum(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Enum()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsEnum(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def EnumBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Enum
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Enum
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Enum
+    def Values(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.EnumVal import EnumVal
+            obj = EnumVal()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Enum
+    def ValuesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Enum
+    def ValuesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Enum
+    def IsUnion(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Enum
+    def UnderlyingType(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Type import Type
+            obj = Type()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Enum
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Enum
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Enum
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        return o == 0
+
+    # Enum
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # Enum
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Enum
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+    # File that this Enum is declared in.
+    # Enum
+    def DeclarationFile(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+def EnumStart(builder):
+    builder.StartObject(7)
+
+def Start(builder):
+    EnumStart(builder)
+
+def EnumAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    EnumAddName(builder, name)
+
+def EnumAddValues(builder, values):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(values), 0)
+
+def AddValues(builder, values):
+    EnumAddValues(builder, values)
+
+def EnumStartValuesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartValuesVector(builder, numElems):
+    return EnumStartValuesVector(builder, numElems)
+
+def EnumAddIsUnion(builder, isUnion):
+    builder.PrependBoolSlot(2, isUnion, 0)
+
+def AddIsUnion(builder, isUnion):
+    EnumAddIsUnion(builder, isUnion)
+
+def EnumAddUnderlyingType(builder, underlyingType):
+    builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(underlyingType), 0)
+
+def AddUnderlyingType(builder, underlyingType):
+    EnumAddUnderlyingType(builder, underlyingType)
+
+def EnumAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(4, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    EnumAddAttributes(builder, attributes)
+
+def EnumStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return EnumStartAttributesVector(builder, numElems)
+
+def EnumAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(5, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    EnumAddDocumentation(builder, documentation)
+
+def EnumStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return EnumStartDocumentationVector(builder, numElems)
+
+def EnumAddDeclarationFile(builder, declarationFile):
+    builder.PrependUOffsetTRelativeSlot(6, flatbuffers.number_types.UOffsetTFlags.py_type(declarationFile), 0)
+
+def AddDeclarationFile(builder, declarationFile):
+    EnumAddDeclarationFile(builder, declarationFile)
+
+def EnumEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return EnumEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/EnumVal.py

@@ -0,0 +1,153 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class EnumVal(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = EnumVal()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsEnumVal(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def EnumValBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # EnumVal
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # EnumVal
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # EnumVal
+    def Value(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int64Flags, o + self._tab.Pos)
+        return 0
+
+    # EnumVal
+    def UnionType(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Type import Type
+            obj = Type()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # EnumVal
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # EnumVal
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # EnumVal
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        return o == 0
+
+    # EnumVal
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # EnumVal
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # EnumVal
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+def EnumValStart(builder):
+    builder.StartObject(6)
+
+def Start(builder):
+    EnumValStart(builder)
+
+def EnumValAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    EnumValAddName(builder, name)
+
+def EnumValAddValue(builder, value):
+    builder.PrependInt64Slot(1, value, 0)
+
+def AddValue(builder, value):
+    EnumValAddValue(builder, value)
+
+def EnumValAddUnionType(builder, unionType):
+    builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(unionType), 0)
+
+def AddUnionType(builder, unionType):
+    EnumValAddUnionType(builder, unionType)
+
+def EnumValAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(4, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    EnumValAddDocumentation(builder, documentation)
+
+def EnumValStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return EnumValStartDocumentationVector(builder, numElems)
+
+def EnumValAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(5, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    EnumValAddAttributes(builder, attributes)
+
+def EnumValStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return EnumValStartAttributesVector(builder, numElems)
+
+def EnumValEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return EnumValEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/Field.py

@@ -0,0 +1,272 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Field(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Field()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsField(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def FieldBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Field
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Field
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Field
+    def Type(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Type import Type
+            obj = Type()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Field
+    def Id(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint16Flags, o + self._tab.Pos)
+        return 0
+
+    # Field
+    def Offset(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint16Flags, o + self._tab.Pos)
+        return 0
+
+    # Field
+    def DefaultInteger(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int64Flags, o + self._tab.Pos)
+        return 0
+
+    # Field
+    def DefaultReal(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Float64Flags, o + self._tab.Pos)
+        return 0.0
+
+    # Field
+    def Deprecated(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Field
+    def Required(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Field
+    def Key(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(20))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Field
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(22))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Field
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(22))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Field
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(22))
+        return o == 0
+
+    # Field
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(24))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # Field
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(24))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Field
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(24))
+        return o == 0
+
+    # Field
+    def Optional(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(26))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Number of padding octets to always add after this field. Structs only.
+    # Field
+    def Padding(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(28))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint16Flags, o + self._tab.Pos)
+        return 0
+
+    # If the field uses 64-bit offsets.
+    # Field
+    def Offset64(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(30))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+def FieldStart(builder):
+    builder.StartObject(14)
+
+def Start(builder):
+    FieldStart(builder)
+
+def FieldAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    FieldAddName(builder, name)
+
+def FieldAddType(builder, type):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(type), 0)
+
+def AddType(builder, type):
+    FieldAddType(builder, type)
+
+def FieldAddId(builder, id):
+    builder.PrependUint16Slot(2, id, 0)
+
+def AddId(builder, id):
+    FieldAddId(builder, id)
+
+def FieldAddOffset(builder, offset):
+    builder.PrependUint16Slot(3, offset, 0)
+
+def AddOffset(builder, offset):
+    FieldAddOffset(builder, offset)
+
+def FieldAddDefaultInteger(builder, defaultInteger):
+    builder.PrependInt64Slot(4, defaultInteger, 0)
+
+def AddDefaultInteger(builder, defaultInteger):
+    FieldAddDefaultInteger(builder, defaultInteger)
+
+def FieldAddDefaultReal(builder, defaultReal):
+    builder.PrependFloat64Slot(5, defaultReal, 0.0)
+
+def AddDefaultReal(builder, defaultReal):
+    FieldAddDefaultReal(builder, defaultReal)
+
+def FieldAddDeprecated(builder, deprecated):
+    builder.PrependBoolSlot(6, deprecated, 0)
+
+def AddDeprecated(builder, deprecated):
+    FieldAddDeprecated(builder, deprecated)
+
+def FieldAddRequired(builder, required):
+    builder.PrependBoolSlot(7, required, 0)
+
+def AddRequired(builder, required):
+    FieldAddRequired(builder, required)
+
+def FieldAddKey(builder, key):
+    builder.PrependBoolSlot(8, key, 0)
+
+def AddKey(builder, key):
+    FieldAddKey(builder, key)
+
+def FieldAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(9, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    FieldAddAttributes(builder, attributes)
+
+def FieldStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return FieldStartAttributesVector(builder, numElems)
+
+def FieldAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(10, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    FieldAddDocumentation(builder, documentation)
+
+def FieldStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return FieldStartDocumentationVector(builder, numElems)
+
+def FieldAddOptional(builder, optional):
+    builder.PrependBoolSlot(11, optional, 0)
+
+def AddOptional(builder, optional):
+    FieldAddOptional(builder, optional)
+
+def FieldAddPadding(builder, padding):
+    builder.PrependUint16Slot(12, padding, 0)
+
+def AddPadding(builder, padding):
+    FieldAddPadding(builder, padding)
+
+def FieldAddOffset64(builder, offset64):
+    builder.PrependBoolSlot(13, offset64, 0)
+
+def AddOffset64(builder, offset64):
+    FieldAddOffset64(builder, offset64)
+
+def FieldEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return FieldEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/KeyValue.py

@@ -0,0 +1,67 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class KeyValue(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = KeyValue()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsKeyValue(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def KeyValueBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # KeyValue
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # KeyValue
+    def Key(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # KeyValue
+    def Value(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+def KeyValueStart(builder):
+    builder.StartObject(2)
+
+def Start(builder):
+    KeyValueStart(builder)
+
+def KeyValueAddKey(builder, key):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(key), 0)
+
+def AddKey(builder, key):
+    KeyValueAddKey(builder, key)
+
+def KeyValueAddValue(builder, value):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(value), 0)
+
+def AddValue(builder, value):
+    KeyValueAddValue(builder, value)
+
+def KeyValueEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return KeyValueEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/Object.py

@@ -0,0 +1,213 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Object(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Object()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsObject(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def ObjectBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Object
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Object
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Object
+    def Fields(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.Field import Field
+            obj = Field()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Object
+    def FieldsLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Object
+    def FieldsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Object
+    def IsStruct(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+    # Object
+    def Minalign(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # Object
+    def Bytesize(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # Object
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Object
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Object
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+    # Object
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # Object
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Object
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        return o == 0
+
+    # File that this Object is declared in.
+    # Object
+    def DeclarationFile(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+def ObjectStart(builder):
+    builder.StartObject(8)
+
+def Start(builder):
+    ObjectStart(builder)
+
+def ObjectAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    ObjectAddName(builder, name)
+
+def ObjectAddFields(builder, fields):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(fields), 0)
+
+def AddFields(builder, fields):
+    ObjectAddFields(builder, fields)
+
+def ObjectStartFieldsVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartFieldsVector(builder, numElems):
+    return ObjectStartFieldsVector(builder, numElems)
+
+def ObjectAddIsStruct(builder, isStruct):
+    builder.PrependBoolSlot(2, isStruct, 0)
+
+def AddIsStruct(builder, isStruct):
+    ObjectAddIsStruct(builder, isStruct)
+
+def ObjectAddMinalign(builder, minalign):
+    builder.PrependInt32Slot(3, minalign, 0)
+
+def AddMinalign(builder, minalign):
+    ObjectAddMinalign(builder, minalign)
+
+def ObjectAddBytesize(builder, bytesize):
+    builder.PrependInt32Slot(4, bytesize, 0)
+
+def AddBytesize(builder, bytesize):
+    ObjectAddBytesize(builder, bytesize)
+
+def ObjectAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(5, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    ObjectAddAttributes(builder, attributes)
+
+def ObjectStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return ObjectStartAttributesVector(builder, numElems)
+
+def ObjectAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(6, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    ObjectAddDocumentation(builder, documentation)
+
+def ObjectStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return ObjectStartDocumentationVector(builder, numElems)
+
+def ObjectAddDeclarationFile(builder, declarationFile):
+    builder.PrependUOffsetTRelativeSlot(7, flatbuffers.number_types.UOffsetTFlags.py_type(declarationFile), 0)
+
+def AddDeclarationFile(builder, declarationFile):
+    ObjectAddDeclarationFile(builder, declarationFile)
+
+def ObjectEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return ObjectEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/RPCCall.py

@@ -0,0 +1,157 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class RPCCall(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = RPCCall()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsRPCCall(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def RPCCallBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # RPCCall
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # RPCCall
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # RPCCall
+    def Request(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Object import Object
+            obj = Object()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # RPCCall
+    def Response(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Object import Object
+            obj = Object()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # RPCCall
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # RPCCall
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # RPCCall
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        return o == 0
+
+    # RPCCall
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # RPCCall
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # RPCCall
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        return o == 0
+
+def RPCCallStart(builder):
+    builder.StartObject(5)
+
+def Start(builder):
+    RPCCallStart(builder)
+
+def RPCCallAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    RPCCallAddName(builder, name)
+
+def RPCCallAddRequest(builder, request):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(request), 0)
+
+def AddRequest(builder, request):
+    RPCCallAddRequest(builder, request)
+
+def RPCCallAddResponse(builder, response):
+    builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(response), 0)
+
+def AddResponse(builder, response):
+    RPCCallAddResponse(builder, response)
+
+def RPCCallAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    RPCCallAddAttributes(builder, attributes)
+
+def RPCCallStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return RPCCallStartAttributesVector(builder, numElems)
+
+def RPCCallAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(4, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    RPCCallAddDocumentation(builder, documentation)
+
+def RPCCallStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return RPCCallStartDocumentationVector(builder, numElems)
+
+def RPCCallEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return RPCCallEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/Schema.py

@@ -0,0 +1,247 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Schema(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Schema()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsSchema(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def SchemaBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Schema
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Schema
+    def Objects(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.Object import Object
+            obj = Object()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Schema
+    def ObjectsLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Schema
+    def ObjectsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # Schema
+    def Enums(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.Enum import Enum
+            obj = Enum()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Schema
+    def EnumsLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Schema
+    def EnumsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Schema
+    def FileIdent(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Schema
+    def FileExt(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Schema
+    def RootTable(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            x = self._tab.Indirect(o + self._tab.Pos)
+            from reflection.Object import Object
+            obj = Object()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Schema
+    def Services(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.Service import Service
+            obj = Service()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Schema
+    def ServicesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Schema
+    def ServicesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+    # Schema
+    def AdvancedFeatures(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint64Flags, o + self._tab.Pos)
+        return 0
+
+    # All the files used in this compilation. Files are relative to where
+    # flatc was invoked.
+    # Schema
+    def FbsFiles(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.SchemaFile import SchemaFile
+            obj = SchemaFile()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Schema
+    def FbsFilesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Schema
+    def FbsFilesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        return o == 0
+
+def SchemaStart(builder):
+    builder.StartObject(8)
+
+def Start(builder):
+    SchemaStart(builder)
+
+def SchemaAddObjects(builder, objects):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(objects), 0)
+
+def AddObjects(builder, objects):
+    SchemaAddObjects(builder, objects)
+
+def SchemaStartObjectsVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartObjectsVector(builder, numElems):
+    return SchemaStartObjectsVector(builder, numElems)
+
+def SchemaAddEnums(builder, enums):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(enums), 0)
+
+def AddEnums(builder, enums):
+    SchemaAddEnums(builder, enums)
+
+def SchemaStartEnumsVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartEnumsVector(builder, numElems):
+    return SchemaStartEnumsVector(builder, numElems)
+
+def SchemaAddFileIdent(builder, fileIdent):
+    builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(fileIdent), 0)
+
+def AddFileIdent(builder, fileIdent):
+    SchemaAddFileIdent(builder, fileIdent)
+
+def SchemaAddFileExt(builder, fileExt):
+    builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(fileExt), 0)
+
+def AddFileExt(builder, fileExt):
+    SchemaAddFileExt(builder, fileExt)
+
+def SchemaAddRootTable(builder, rootTable):
+    builder.PrependUOffsetTRelativeSlot(4, flatbuffers.number_types.UOffsetTFlags.py_type(rootTable), 0)
+
+def AddRootTable(builder, rootTable):
+    SchemaAddRootTable(builder, rootTable)
+
+def SchemaAddServices(builder, services):
+    builder.PrependUOffsetTRelativeSlot(5, flatbuffers.number_types.UOffsetTFlags.py_type(services), 0)
+
+def AddServices(builder, services):
+    SchemaAddServices(builder, services)
+
+def SchemaStartServicesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartServicesVector(builder, numElems):
+    return SchemaStartServicesVector(builder, numElems)
+
+def SchemaAddAdvancedFeatures(builder, advancedFeatures):
+    builder.PrependUint64Slot(6, advancedFeatures, 0)
+
+def AddAdvancedFeatures(builder, advancedFeatures):
+    SchemaAddAdvancedFeatures(builder, advancedFeatures)
+
+def SchemaAddFbsFiles(builder, fbsFiles):
+    builder.PrependUOffsetTRelativeSlot(7, flatbuffers.number_types.UOffsetTFlags.py_type(fbsFiles), 0)
+
+def AddFbsFiles(builder, fbsFiles):
+    SchemaAddFbsFiles(builder, fbsFiles)
+
+def SchemaStartFbsFilesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartFbsFilesVector(builder, numElems):
+    return SchemaStartFbsFilesVector(builder, numElems)
+
+def SchemaEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return SchemaEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/SchemaFile.py

@@ -0,0 +1,91 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+# File specific information.
+# Symbols declared within a file may be recovered by iterating over all
+# symbols and examining the `declaration_file` field.
+class SchemaFile(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = SchemaFile()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsSchemaFile(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def SchemaFileBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # SchemaFile
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Filename, relative to project root.
+    # SchemaFile
+    def Filename(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Names of included files, relative to project root.
+    # SchemaFile
+    def IncludedFilenames(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # SchemaFile
+    def IncludedFilenamesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # SchemaFile
+    def IncludedFilenamesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+def SchemaFileStart(builder):
+    builder.StartObject(2)
+
+def Start(builder):
+    SchemaFileStart(builder)
+
+def SchemaFileAddFilename(builder, filename):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(filename), 0)
+
+def AddFilename(builder, filename):
+    SchemaFileAddFilename(builder, filename)
+
+def SchemaFileAddIncludedFilenames(builder, includedFilenames):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(includedFilenames), 0)
+
+def AddIncludedFilenames(builder, includedFilenames):
+    SchemaFileAddIncludedFilenames(builder, includedFilenames)
+
+def SchemaFileStartIncludedFilenamesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartIncludedFilenamesVector(builder, numElems):
+    return SchemaFileStartIncludedFilenamesVector(builder, numElems)
+
+def SchemaFileEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return SchemaFileEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/Service.py

@@ -0,0 +1,174 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Service(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Service()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsService(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def ServiceBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Service
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Service
+    def Name(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+    # Service
+    def Calls(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.RPCCall import RPCCall
+            obj = RPCCall()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Service
+    def CallsLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Service
+    def CallsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Service
+    def Attributes(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            x = self._tab.Vector(o)
+            x += flatbuffers.number_types.UOffsetTFlags.py_type(j) * 4
+            x = self._tab.Indirect(x)
+            from reflection.KeyValue import KeyValue
+            obj = KeyValue()
+            obj.Init(self._tab.Bytes, x)
+            return obj
+        return None
+
+    # Service
+    def AttributesLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Service
+    def AttributesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
+    # Service
+    def Documentation(self, j):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            a = self._tab.Vector(o)
+            return self._tab.String(a + flatbuffers.number_types.UOffsetTFlags.py_type(j * 4))
+        return ""
+
+    # Service
+    def DocumentationLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.VectorLen(o)
+        return 0
+
+    # Service
+    def DocumentationIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        return o == 0
+
+    # File that this Service is declared in.
+    # Service
+    def DeclarationFile(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.String(o + self._tab.Pos)
+        return None
+
+def ServiceStart(builder):
+    builder.StartObject(5)
+
+def Start(builder):
+    ServiceStart(builder)
+
+def ServiceAddName(builder, name):
+    builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def AddName(builder, name):
+    ServiceAddName(builder, name)
+
+def ServiceAddCalls(builder, calls):
+    builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(calls), 0)
+
+def AddCalls(builder, calls):
+    ServiceAddCalls(builder, calls)
+
+def ServiceStartCallsVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartCallsVector(builder, numElems):
+    return ServiceStartCallsVector(builder, numElems)
+
+def ServiceAddAttributes(builder, attributes):
+    builder.PrependUOffsetTRelativeSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def AddAttributes(builder, attributes):
+    ServiceAddAttributes(builder, attributes)
+
+def ServiceStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartAttributesVector(builder, numElems):
+    return ServiceStartAttributesVector(builder, numElems)
+
+def ServiceAddDocumentation(builder, documentation):
+    builder.PrependUOffsetTRelativeSlot(3, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def AddDocumentation(builder, documentation):
+    ServiceAddDocumentation(builder, documentation)
+
+def ServiceStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
+def StartDocumentationVector(builder, numElems):
+    return ServiceStartDocumentationVector(builder, numElems)
+
+def ServiceAddDeclarationFile(builder, declarationFile):
+    builder.PrependUOffsetTRelativeSlot(4, flatbuffers.number_types.UOffsetTFlags.py_type(declarationFile), 0)
+
+def AddDeclarationFile(builder, declarationFile):
+    ServiceAddDeclarationFile(builder, declarationFile)
+
+def ServiceEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return ServiceEnd(builder)

third_party/flatbuffers/python/flatbuffers/reflection/Type.py

@@ -0,0 +1,121 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: reflection
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Type(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAs(cls, buf, offset=0):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Type()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def GetRootAsType(cls, buf, offset=0):
+        """This method is deprecated. Please switch to GetRootAs."""
+        return cls.GetRootAs(buf, offset)
+    @classmethod
+    def TypeBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x42\x46\x42\x53", size_prefixed=size_prefixed)
+
+    # Type
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Type
+    def BaseType(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+    # Type
+    def Element(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+    # Type
+    def Index(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return -1
+
+    # Type
+    def FixedLength(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint16Flags, o + self._tab.Pos)
+        return 0
+
+    # The size (octets) of the `base_type` field.
+    # Type
+    def BaseSize(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint32Flags, o + self._tab.Pos)
+        return 4
+
+    # The size (octets) of the `element` field, if present.
+    # Type
+    def ElementSize(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Uint32Flags, o + self._tab.Pos)
+        return 0
+
+def TypeStart(builder):
+    builder.StartObject(6)
+
+def Start(builder):
+    TypeStart(builder)
+
+def TypeAddBaseType(builder, baseType):
+    builder.PrependInt8Slot(0, baseType, 0)
+
+def AddBaseType(builder, baseType):
+    TypeAddBaseType(builder, baseType)
+
+def TypeAddElement(builder, element):
+    builder.PrependInt8Slot(1, element, 0)
+
+def AddElement(builder, element):
+    TypeAddElement(builder, element)
+
+def TypeAddIndex(builder, index):
+    builder.PrependInt32Slot(2, index, -1)
+
+def AddIndex(builder, index):
+    TypeAddIndex(builder, index)
+
+def TypeAddFixedLength(builder, fixedLength):
+    builder.PrependUint16Slot(3, fixedLength, 0)
+
+def AddFixedLength(builder, fixedLength):
+    TypeAddFixedLength(builder, fixedLength)
+
+def TypeAddBaseSize(builder, baseSize):
+    builder.PrependUint32Slot(4, baseSize, 4)
+
+def AddBaseSize(builder, baseSize):
+    TypeAddBaseSize(builder, baseSize)
+
+def TypeAddElementSize(builder, elementSize):
+    builder.PrependUint32Slot(5, elementSize, 0)
+
+def AddElementSize(builder, elementSize):
+    TypeAddElementSize(builder, elementSize)
+
+def TypeEnd(builder):
+    return builder.EndObject()
+
+def End(builder):
+    return TypeEnd(builder)

third_party/flatbuffers/python/flatbuffers/table.py

@@ -0,0 +1,138 @@
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import encode
+from . import number_types as N
+
+
+class Table(object):
+    """Table wraps a byte slice and provides read access to its data.
+
+    The variable `Pos` indicates the root of the FlatBuffers object therein."""
+
+    __slots__ = ("Bytes", "Pos")
+
+    def __init__(self, buf, pos):
+        N.enforce_number(pos, N.UOffsetTFlags)
+
+        self.Bytes = buf
+        self.Pos = pos
+
+    def Offset(self, vtableOffset):
+        """Offset provides access into the Table's vtable.
+
+        Deprecated fields are ignored by checking the vtable's length."""
+
+        vtable = self.Pos - self.Get(N.SOffsetTFlags, self.Pos)
+        vtableEnd = self.Get(N.VOffsetTFlags, vtable)
+        if vtableOffset < vtableEnd:
+            return self.Get(N.VOffsetTFlags, vtable + vtableOffset)
+        return 0
+
+    def Indirect(self, off):
+        """Indirect retrieves the relative offset stored at `offset`."""
+        N.enforce_number(off, N.UOffsetTFlags)
+        return off + encode.Get(N.UOffsetTFlags.packer_type, self.Bytes, off)
+
+    def String(self, off):
+        """String gets a string from data stored inside the flatbuffer."""
+        N.enforce_number(off, N.UOffsetTFlags)
+        off += encode.Get(N.UOffsetTFlags.packer_type, self.Bytes, off)
+        start = off + N.UOffsetTFlags.bytewidth
+        length = encode.Get(N.UOffsetTFlags.packer_type, self.Bytes, off)
+        return bytes(self.Bytes[start:start+length])
+
+    def VectorLen(self, off):
+        """VectorLen retrieves the length of the vector whose offset is stored
+           at "off" in this object."""
+        N.enforce_number(off, N.UOffsetTFlags)
+
+        off += self.Pos
+        off += encode.Get(N.UOffsetTFlags.packer_type, self.Bytes, off)
+        ret = encode.Get(N.UOffsetTFlags.packer_type, self.Bytes, off)
+        return ret
+
+    def Vector(self, off):
+        """Vector retrieves the start of data of the vector whose offset is
+           stored at "off" in this object."""
+        N.enforce_number(off, N.UOffsetTFlags)
+
+        off += self.Pos
+        x = off + self.Get(N.UOffsetTFlags, off)
+        # data starts after metadata containing the vector length
+        x += N.UOffsetTFlags.bytewidth
+        return x
+
+    def Union(self, t2, off):
+        """Union initializes any Table-derived type to point to the union at
+           the given offset."""
+        assert type(t2) is Table
+        N.enforce_number(off, N.UOffsetTFlags)
+
+        off += self.Pos
+        t2.Pos = off + self.Get(N.UOffsetTFlags, off)
+        t2.Bytes = self.Bytes
+
+    def Get(self, flags, off):
+        """
+        Get retrieves a value of the type specified by `flags`  at the
+        given offset.
+        """
+        N.enforce_number(off, N.UOffsetTFlags)
+        return flags.py_type(encode.Get(flags.packer_type, self.Bytes, off))
+
+    def GetSlot(self, slot, d, validator_flags):
+        N.enforce_number(slot, N.VOffsetTFlags)
+        if validator_flags is not None:
+            N.enforce_number(d, validator_flags)
+        off = self.Offset(slot)
+        if off == 0:
+            return d
+        return self.Get(validator_flags, self.Pos + off)
+
+    def GetVectorAsNumpy(self, flags, off):
+        """
+        GetVectorAsNumpy returns the vector that starts at `Vector(off)`
+        as a numpy array with the type specified by `flags`. The array is
+        a `view` into Bytes, so modifying the returned array will
+        modify Bytes in place.
+        """
+        offset = self.Vector(off)
+        length = self.VectorLen(off) # TODO: length accounts for bytewidth, right?
+        numpy_dtype = N.to_numpy_type(flags)
+        return encode.GetVectorAsNumpy(numpy_dtype, self.Bytes, length, offset)
+
+    def GetArrayAsNumpy(self, flags, off, length):
+        """
+        GetArrayAsNumpy returns the array with fixed width that starts at `Vector(offset)`
+        with length `length` as a numpy array with the type specified by `flags`. The
+        array is a `view` into Bytes so modifying the returned will modify Bytes in place.
+        """
+        numpy_dtype = N.to_numpy_type(flags)
+        return encode.GetVectorAsNumpy(numpy_dtype, self.Bytes, length, off)
+
+    def GetVOffsetTSlot(self, slot, d):
+        """
+        GetVOffsetTSlot retrieves the VOffsetT that the given vtable location
+        points to. If the vtable value is zero, the default value `d`
+        will be returned.
+        """
+
+        N.enforce_number(slot, N.VOffsetTFlags)
+        N.enforce_number(d, N.VOffsetTFlags)
+
+        off = self.Offset(slot)
+        if off == 0:
+            return d
+        return off

third_party/flatbuffers/python/flatbuffers/util.py

@@ -0,0 +1,43 @@
+# Copyright 2017 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import encode
+from . import number_types
+from . import packer
+
+def GetSizePrefix(buf, offset):
+	"""Extract the size prefix from a buffer."""
+	return encode.Get(packer.int32, buf, offset)
+
+def GetBufferIdentifier(buf, offset, size_prefixed=False):
+        """Extract the file_identifier from a buffer"""
+        if size_prefixed:
+            # increase offset by size of UOffsetTFlags
+            offset += number_types.UOffsetTFlags.bytewidth
+        # increase offset by size of root table pointer
+        offset += number_types.UOffsetTFlags.bytewidth
+        # end of FILE_IDENTIFIER
+        end = offset + encode.FILE_IDENTIFIER_LENGTH
+        return buf[offset:end]
+
+def BufferHasIdentifier(buf, offset, file_identifier, size_prefixed=False):
+        got = GetBufferIdentifier(buf, offset, size_prefixed=size_prefixed)
+        return got == file_identifier
+
+def RemoveSizePrefix(buf, offset):
+	"""
+	Create a slice of a size-prefixed buffer that has
+	its position advanced just past the size prefix.
+	"""
+	return buf, offset + number_types.Int32Flags.bytewidth

third_party/flatbuffers/python/setup.cfg

@@ -0,0 +1,6 @@
+[bdist_wheel]
+universal=1
+
+[metadata]
+license_files =
+   ../license

third_party/flatbuffers/python/setup.py

@@ -0,0 +1,45 @@
+# Copyright 2016 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from setuptools import setup
+
+setup(
+    name='flatbuffers',
+    version='24.3.25',
+    license='Apache 2.0',
+    license_files='../LICENSE',
+    author='Derek Bailey',
+    author_email='derekbailey@google.com',
+    url='https://google.github.io/flatbuffers/',
+    long_description=('Python runtime library for use with the '
+                      '`Flatbuffers <https://google.github.io/flatbuffers/>`_ '
+                      'serialization format.'),
+    packages=['flatbuffers'],
+    include_package_data=True,
+    requires=[],
+    description='The FlatBuffers serialization format for Python',
+    classifiers=[
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: Apache Software License',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 3',
+        'Topic :: Software Development :: Libraries :: Python Modules',
+    ],
+    project_urls={
+        'Documentation': 'https://google.github.io/flatbuffers/',
+        'Source': 'https://github.com/google/flatbuffers',
+    },
+)