import onnx
from .base_operator import QuantOperatorBase
from ..quant_utils import QuantizedValue, QuantizedValueType
from onnx import onnx_pb as onnx_proto
'''
    Quantize Gather
'''


class GatherQuant(QuantOperatorBase):
    def __init__(self, onnx_quantizer, onnx_node):
        super().__init__(onnx_quantizer, onnx_node)

    def quantize(self):
        node = self.node
        assert (node.op_type == "Gather")
        if (not self.quantizer.is_valid_quantize_weight(node.input[0])):
            super().quantize()
            return

        (quantized_input_names, zero_point_names, scale_names, nodes) = \
            self.quantizer.quantize_inputs(node, [0])

        gather_new_output = node.output[0] + "_quantized"

        # Create an entry for this quantized value
        q_output = QuantizedValue(node.output[0], gather_new_output, scale_names[0], zero_point_names[0],
                                  QuantizedValueType.Input)
        self.quantizer.quantized_value_map[node.output[0]] = q_output

        gather_original_output = node.output[0]
        node.output[0] = gather_new_output
        node.input[0] = quantized_input_names[0]
        nodes.append(node)

        self.quantizer.new_nodes += nodes