# Copyright (C) 2024 qBraid
#
# This file is part of the qBraid-SDK
#
# The qBraid-SDK is free software released under the GNU General Public License v3
# or later. You can redistribute and/or modify it under the terms of the GPL v3.
# See the LICENSE file in the project root or <https://www.gnu.org/licenses/gpl-3.0.html>.
#
# THERE IS NO WARRANTY for the qBraid-SDK, as per Section 15 of the GPL v3.
"""
Module containing top-level qbraid program loader functionality
utilizing entrypoints via ``pkg_resources``.
"""
from typing import TYPE_CHECKING
import openqasm3
from qbraid._import import _load_entrypoint
from qbraid.exceptions import QbraidError
from .alias_manager import get_program_type_alias
if TYPE_CHECKING:
import qbraid.programs
[docs]
def load_program(program: "qbraid.programs.QPROGRAM") -> "qbraid.programs.QuantumProgram":
"""Apply qbraid quantum program wrapper to a supported quantum program.
This function is used to create a qBraid :class:`~qbraid.programs.QuantumProgram`
object, which can then be transpiled to any supported quantum circuit-building package.
The input quantum circuit object must be an instance of a circuit object derived from a
supported package.
Args:
circuit (:data:`~qbraid.programs.QPROGRAM`): A supported quantum circuit / program object
Returns:
:class:`~qbraid.programs.QuantumProgram`: A wrapped quantum circuit-like object
Raises:
:class:`~qbraid.QbraidError`: If the input circuit is not a supported quantum program.
"""
if isinstance(program, openqasm3.ast.Program):
program = openqasm3.dumps(program)
try:
package = get_program_type_alias(program)
except QbraidError as err:
raise QbraidError(f"Error loading quantum program of type {type(program)}") from err
try:
load_program_class = _load_entrypoint("programs", package)
except Exception as err:
raise QbraidError(f"Error loading quantum program of type {type(program)}") from err
return load_program_class(program)