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#!/usr/bin/python3
#
# Copyright 2022 The ANGLE Project Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# gen_interpreter_utils.py:
# Code generator for the GLC interpreter.
# NOTE: don't run this script directly. Run scripts/run_code_generation.py.
import os
import re
import sys
import registry_xml
EXIT_SUCCESS = 0
EXIT_FAILURE = 1
BASE_PATH = '../util/capture/trace_interpreter_autogen'
CPP_TEMPLATE = """\
// GENERATED FILE - DO NOT EDIT.
// Generated by {script_name} using data from {data_source_name}.
//
// Copyright 2022 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// {file_name}.cpp:
// Helper code for trace interpreter.
#include "angle_trace_gl.h"
#include "trace_fixture.h"
#include "trace_interpreter.h"
namespace angle
{{
CallCapture ParseCallCapture(const Token &nameToken, size_t numParamTokens, const Token *paramTokens, const TraceStringMap &strings)
{{
{parse_cases}
if (numParamTokens > 0)
{{
printf("Expected zero parameter tokens for %s\\n", nameToken);
UNREACHABLE();
}}
return CallCapture(nameToken, ParamBuffer());
}}
{dispatch_cases}
void ReplayCustomFunctionCall(const CallCapture &call, const TraceFunctionMap &customFunctions)
{{
ASSERT(call.entryPoint == EntryPoint::Invalid);
const Captures &captures = call.params.getParamCaptures();
{custom_dispatch_cases}
auto iter = customFunctions.find(call.customFunctionName);
if (iter == customFunctions.end())
{{
printf("Unknown custom function: %s\\n", call.customFunctionName.c_str());
UNREACHABLE();
}}
else
{{
ASSERT(call.params.empty());
const TraceFunction &customFunc = iter->second;
for (const CallCapture &customCall : customFunc)
{{
ReplayTraceFunctionCall(customCall, customFunctions);
}}
}}
}}
}} // namespace angle
"""
PARSE_CASE = """\
if (strcmp(nameToken, "{ep}") == 0)
{{
ParamBuffer params = ParseParameters<{pfn}>(paramTokens, strings);
return CallCapture({call}, std::move(params));
}}
"""
CUSTOM_DISPATCH_CASE = """\
if (call.customFunctionName == "{fn}")
{{
DispatchCallCapture({fn}, captures);
return;
}}
"""
DISPATCH_CASE = """\
template <typename Fn, EnableIfNArgs<Fn, {nargs}> = 0>
void DispatchCallCapture(Fn *fn, const Captures &cap)
{{
(*fn)({args});
}}
"""
FIXTURE_H = '../util/capture/trace_fixture.h'
def GetFunctionsFromFixture():
funcs = []
arg_counts = set()
pattern = 'void '
with open(FIXTURE_H) as f:
lines = f.read().split(';')
for line in lines:
line = re.sub('// .*\n', '', line.strip())
if line.startswith(pattern):
func_name_end_index = line.find('(')
func_name = line[len(pattern):func_name_end_index]
args_start_index = func_name_end_index + 1
args_end_index = line.find(')', args_start_index)
args_str = line[args_start_index:args_end_index].strip()
if args_str:
func_args = args_str.count(',') + 1
else:
func_args = 0
funcs.append(func_name)
arg_counts.add(func_args)
f.close()
return sorted(list(set(funcs))), arg_counts
def get_dispatch(n):
return ', '.join(['Arg<Fn, %d>(cap)' % i for i in range(n)])
def main(cpp_output_path):
gles = registry_xml.GetGLES()
egl = registry_xml.GetEGL()
def fn(ep):
return 'std::remove_pointer<PFN%sPROC>::type' % ep.upper()
fixture_functions, arg_counts = GetFunctionsFromFixture()
eps_and_enums = sorted(list(set(gles.GetEnums() + egl.GetEnums())))
parse_cases = [
PARSE_CASE.format(ep=ep, pfn=fn(ep), call='EntryPoint::%s' % enum)
for (enum, ep) in eps_and_enums
]
parse_cases += [
PARSE_CASE.format(ep=fn, pfn='decltype(%s)' % fn, call='"%s"' % fn)
for fn in fixture_functions
]
dispatch_cases = [DISPATCH_CASE.format(nargs=n, args=get_dispatch(n)) for n in arg_counts]
custom_dispatch_cases = [CUSTOM_DISPATCH_CASE.format(fn=fn) for fn in fixture_functions]
format_args = {
'script_name': os.path.basename(sys.argv[0]),
'data_source_name': 'gl.xml and gl_angle_ext.xml',
'file_name': os.path.basename(BASE_PATH),
'parse_cases': ''.join(parse_cases),
'dispatch_cases': '\n'.join(dispatch_cases),
'custom_dispatch_cases': ''.join(custom_dispatch_cases),
}
cpp_content = CPP_TEMPLATE.format(**format_args)
cpp_output_path = registry_xml.script_relative(cpp_output_path)
with open(cpp_output_path, 'w') as f:
f.write(cpp_content)
return EXIT_SUCCESS
if __name__ == '__main__':
inputs = registry_xml.xml_inputs + [FIXTURE_H]
outputs = [
'%s.cpp' % BASE_PATH,
]
if len(sys.argv) > 1:
if sys.argv[1] == 'inputs':
print(','.join(inputs))
elif sys.argv[1] == 'outputs':
print(','.join(outputs))
else:
sys.exit(main(registry_xml.script_relative(outputs[0])))
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