slsDetectorPackage/python/scripts/generate_functions.py
Erik Fröjdh ed2a69744b
Auto generating Python bindings (#70)
Auto generating python bindings
2020-01-07 15:47:38 +01:00

84 lines
2.3 KiB
Python

"""
This file is used to auto generate Python bindings for the
sls::Detector class. The tool needs the libclang bindings
to be installed.
When the Detector API is updated this file should be run
manually
"""
from clang import cindex
import subprocess
import argparse
from parse import system_include_paths
default_build_path = "/home/l_frojdh/sls/build/"
fpath = "../../slsDetectorSoftware/src/Detector.cpp"
parser = argparse.ArgumentParser()
parser.add_argument("-p", "--build_path", help="Path to the build database", type = str, default=default_build_path)
cargs = parser.parse_args()
db = cindex.CompilationDatabase.fromDirectory(cargs.build_path)
index = cindex.Index.create()
args = db.getCompileCommands(fpath)
args = list(iter(args).__next__().arguments)[0:-1]
args = args + "-x c++ --std=c++11".split()
syspath = system_include_paths('clang++')
incargs = ["-I" + inc for inc in syspath]
args = args + incargs
tu = index.parse(fpath, args=args)
m = []
ag = []
lines = []
def get_arguments(node):
args = [a.type.spelling for a in node.get_arguments()]
args = [
"py::arg() = Positions{}" if item == "sls::Positions" else "py::arg()"
for item in args
]
args = ', '.join(args)
if args:
args = f', {args}'
return args
def visit(node):
if node.kind == cindex.CursorKind.CLASS_DECL:
if node.displayname == "Detector":
for child in node.get_children():
if (
child.kind == cindex.CursorKind.CXX_METHOD
and child.access_specifier == cindex.AccessSpecifier.PUBLIC
):
m.append(child)
args = get_arguments(child)
lines.append(f'.def(\"{child.spelling}\", &Detector::{child.spelling}{args})')
for child in node.get_children():
visit(child)
visit(tu.cursor)
with open('../src/detector_in.cpp') as f:
data = f.read()
s = ''.join(lines)
s += ';'
text = data.replace('[[FUNCTIONS]]', s)
warning = '/* WARINING This file is auto generated any edits might be overwritten without warning */\n\n'
with open('../src/detector.cpp', 'w') as f:
f.write(warning)
f.write(text)
# run clang format on the output
subprocess.run(['clang-format', '../src/detector.cpp', '-i'])