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# encoding=utf-8
# Copyright © 2017 Intel Corporation
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall 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.
"""Create enum to string functions for vulking using vk.xml."""
from __future__ import print_function
import argparse
import os
import textwrap
import xml.etree.cElementTree as et
from mako.template import Template
COPYRIGHT = textwrap.dedent(u"""\
* Copyright © 2017 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall 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.""")
C_TEMPLATE = Template(textwrap.dedent(u"""\
/* Autogenerated file -- do not edit
* generated by ${file}
*
${copyright}
*/
#include <vulkan/vulkan.h>
#include "util/macros.h"
#include "vk_enum_to_str.h"
% for enum in enums:
const char *
vk_${enum.name[2:]}_to_str(${enum.name} input)
{
switch(input) {
% for v in enum.values:
case ${v}:
return "${v}";
% endfor
default:
unreachable("Undefined enum value.");
}
}
%endfor"""),
output_encoding='utf-8')
H_TEMPLATE = Template(textwrap.dedent(u"""\
/* Autogenerated file -- do not edit
* generated by ${file}
*
${copyright}
*/
#ifndef MESA_VK_ENUM_TO_STR_H
#define MESA_VK_ENUM_TO_STR_H
#include <vulkan/vulkan.h>
% for enum in enums:
const char * vk_${enum.name[2:]}_to_str(${enum.name} input);
% endfor
#endif"""),
output_encoding='utf-8')
class EnumFactory(object):
"""Factory for creating enums."""
def __init__(self, type_):
self.registry = {}
self.type = type_
def __call__(self, name):
try:
return self.registry[name]
except KeyError:
n = self.registry[name] = self.type(name)
return n
class VkEnum(object):
"""Simple struct-like class representing a single Vulkan Enum."""
def __init__(self, name, values=None):
self.name = name
self.values = values or []
def xml_parser(filename):
"""Parse the XML file and return parsed data.
This parser is a memory efficient iterative XML parser that returns a list
of VkEnum objects.
"""
efactory = EnumFactory(VkEnum)
with open(filename, 'rb') as f:
context = iter(et.iterparse(f, events=('start', 'end')))
# This gives the root element, since goal is to iterate over the
# elements without building a tree, this allows the root to be cleared
# (erase the elements) after the children have been processed.
_, root = next(context)
for event, elem in context:
if event == 'end' and elem.tag == 'enums':
type_ = elem.attrib.get('type')
if type_ == 'enum':
enum = efactory(elem.attrib['name'])
enum.values.extend([e.attrib['name'] for e in elem
if e.tag == 'enum'])
elif event == 'end' and elem.tag == 'extension':
if elem.attrib['supported'] != 'vulkan':
continue
for e in elem.findall('.//enum[@extends][@offset]'):
enum = efactory(e.attrib['extends'])
enum.values.append(e.attrib['name'])
root.clear()
return efactory.registry.values()
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--xml', help='Vulkan API XML file.', required=True)
parser.add_argument('--outdir',
help='Directory to put the generated files in',
required=True)
args = parser.parse_args()
enums = xml_parser(args.xml)
for template, file_ in [(C_TEMPLATE, os.path.join(args.outdir, 'vk_enum_to_str.c')),
(H_TEMPLATE, os.path.join(args.outdir, 'vk_enum_to_str.h'))]:
with open(file_, 'wb') as f:
f.write(template.render(
file=os.path.basename(__file__),
enums=enums,
copyright=COPYRIGHT))
if __name__ == '__main__':
main()
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