# Copyright (c) 2025 PaddlePaddle Authors. 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.
"""
speculative decoding module
"""
from fastdeploy.platforms import current_platform

from .base import Proposer
from .mtp import MTPProposer

# XPU is not support ngram proposer now
if not current_platform.is_xpu():
    from .ngram import NgramProposer
__all__ = ["Proposer", "MTPProposer", "NgramProposer"]

# Suffix proposer requires arctic_inference
try:
    from .suffix import SuffixProposer

    _suffix_proposer_available = True
except ImportError:
    _suffix_proposer_available = False
    SuffixProposer = None

if _suffix_proposer_available:
    __all__ = ["Proposer", "MTPProposer", "NgramProposer", "SuffixProposer"]
else:
    __all__ = ["Proposer", "MTPProposer", "NgramProposer"]