#
# Copyright 2019 the original author or authors.
#
# 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.
#
EMPTY = -1
IDEN = 0
X = 1
Y = 2
Z = 3
S = 4
SDG = 5
T = 6
TDG = 7
H = 8
SWAP = 9
# B = 10
CTRL = 11  # "control" part of multi-qubit gate
TRACE = 12  # In the path between a gate part and a "control" or "swap" part
