Source/WebCore/Modules/webgpu/WHLSL/WHLSLBuildStandardLibraryFunctionMap.py

#!/usr/bin/env python
#
# Copyright (C) 2014 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

import sys
import re

regularExpression = re.compile("/\* Functions named (.*) \*/")

infile = open(sys.argv[1], "r")
contents = infile.read()
infile.close()

outfile = open(sys.argv[2], "w")
outfile.write("""
/*
 * Copyright (C) 2019 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "WHLSLStandardLibraryFunctionMap.h"

#if ENABLE(WEBGPU)

namespace WebCore {

namespace WHLSL {

HashMap<String, SubstringLocation> computeStandardLibraryFunctionMap()
{
    HashMap<String, SubstringLocation> result;
""")

# FIXME: Compute StandardLibraryFunctionMap at build-time https://bugs.webkit.org/show_bug.cgi?id=199448

previous = 0
previousName = ""
boundary = 0
for match in regularExpression.finditer(contents):
    if previous == 0:
        previous = match.start()
        boundary = previous
        previousName = match.group(1)
        continue
    outfile.write("    result.add(\"" + previousName + "\"_str, SubstringLocation { " + str(previous) + ", " + str(match.start()) + " });\n")
    previous = match.start()
    previousName = match.group(1)
outfile.write("    result.add(\"" + previousName + "\"_str, SubstringLocation { " + str(previous) + ", " + str(len(contents)) + " });\n")
outfile.write("""
    return result;
}

unsigned firstFunctionOffsetInStandardLibrary()
{
""")

outfile.write("    return " + str(boundary) + ";\n")

outfile.write("""
}

}

}

#endif
""")
outfile.close()