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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

# The Universal Permissive License (UPL), Version 1.0

# Subject to the condition set forth below, permission is hereby granted to any

# person obtaining a copy of this software, associated documentation and/or

# data (collectively the "Software"), free of charge and under any and all

# copyright rights in the Software, and any and all patent rights owned or

# freely licensable by each licensor hereunder covering either (i) the

# unmodified Software as contributed to or provided by such licensor, or (ii)

# the Larger Works (as defined below), to deal in both

# (a) the Software, and

# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if

# one is included with the Software each a "Larger Work" to which the Software

# is contributed by such licensors),

# without restriction, including without limitation the rights to copy, create

# derivative works of, display, perform, and distribute the Software and make,

# use, sell, offer for sale, import, export, have made, and have sold the

# Software and the Larger Work(s), and to sublicense the foregoing rights on

# either these or other terms.

# This license is subject to the following condition:

# The above copyright notice and either this complete permission notice or at a

# minimum a reference to the UPL must be included in all copies or substantial

# portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

# SOFTWARE.

# This script parses gcc output on the embedded source and generates a list of

# C API functions that can be stored in CAPIFunctions.txt to automatically

# check the consistency of the C API implementation in GraalPy.

# Steps to update CAPI functions list:

# 1. Install GNU Binutils (2.43.1).

# 2. Build the desired version of CPython.

# 3. Create and activate a venv using the CPython binary you built above.

# 4. do `pip install pycparser pycparser-fake-libc`

# 5. Finally:

# Just run it in this folder e.g python csignature.py > ../graalpython/com.oracle.graal.python.cext/CAPIFunctions.txt

# Make sure to use the exact same CPython version as we are targeting

import os

import re

import subprocess

import sysconfig

import tempfile

import pycparser_fake_libc

from pycparser import c_ast, parse_file, c_generator

source = """\

#define __attribute__(x)

#define _POSIX_THREADS

#include <Python.h>

#include <frameobject.h>

#include <datetime.h>

#include <structmember.h>

#include <marshal.h>

"""

include_path = sysconfig.get_config_var("INCLUDEPY")

with tempfile.NamedTemporaryFile('w') as f:

f.write(source)

f.flush()

cpp_args = ['-I', pycparser_fake_libc.directory, '-I', include_path]

ast = parse_file(f.name, use_cpp=True, cpp_args=cpp_args)

lib_path = os.path.join(sysconfig.get_config_var('LIBDIR'), sysconfig.get_config_var('LDLIBRARY'))

out = subprocess.check_output(['nm', '--defined-only', '--dynamic', '--format=just-symbols', lib_path], text=True)

exported_symbols = out.rstrip().splitlines()

def cleanup(str):

for i in range(4):

str = re.sub(" \\*", "*", str)

str = re.sub("\\* ", "*", str)

return str

class FuncDeclVisitor(c_ast.NodeVisitor):

def __init__(self):

self.gen = c_generator.CGenerator()

self.results = []

def visit_Decl(self, node):

if isinstance(node.type, c_ast.FuncDecl):

if node.name not in exported_symbols:

return

ret = cleanup(self.gen.visit(node.type.type))

for p in node.type.args.params:

# erase parameter names

if not isinstance(p, c_ast.EllipsisParam):

t = p.type

while isinstance(t, (c_ast.PtrDecl, c_ast.FuncDecl, c_ast.ArrayDecl)):

t = t.type

t.declname = None

args = [cleanup(self.gen.visit(p)) for p in node.type.args.params]

args = "|".join(args)

self.results.append(f"{node.name};{ret};{args}")

v = FuncDeclVisitor()

v.visit(ast)

for line in sorted(v.results):

print(line)

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