parser graph generation support for graphs backend #969
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main func and Graph methods are separed to different files:p4c-graphs…
….cpp,graphs.cpp
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@@ -16,6 +16,7 @@ set (GRAPHS_SRCS | |
| graphs.cpp | ||
| controls.cpp | ||
| parser.cpp | ||
| p4c-graphs.cpp | ||
| ) | ||
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| set (GRAPHS_HDRS | ||
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| @@ -0,0 +1,124 @@ | ||
| /* | ||
| Copyright 2013-present Barefoot Networks, Inc. | ||
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| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
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| http://www.apache.org/licenses/LICENSE-2.0 | ||
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| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
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| #include "ir/ir.h" | ||
| #include "lib/log.h" | ||
| #include "lib/error.h" | ||
| #include "lib/exceptions.h" | ||
| #include "lib/gc.h" | ||
| #include "lib/crash.h" | ||
| #include "lib/nullstream.h" | ||
| #include "frontends/common/parseInput.h" | ||
| #include "frontends/p4/evaluator/evaluator.h" | ||
| #include "frontends/p4/frontend.h" | ||
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| #include "graphs.h" | ||
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| namespace graphs { | ||
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| class MidEnd : public PassManager { | ||
| public: | ||
| P4::ReferenceMap refMap; | ||
| P4::TypeMap typeMap; | ||
| IR::ToplevelBlock *toplevel = nullptr; | ||
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| explicit MidEnd(CompilerOptions& options); | ||
| IR::ToplevelBlock* process(const IR::P4Program *&program) { | ||
| program = program->apply(*this); | ||
| return toplevel; | ||
| } | ||
| }; | ||
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| MidEnd::MidEnd(CompilerOptions& options) { | ||
| bool isv1 = options.langVersion == CompilerOptions::FrontendVersion::P4_14; | ||
| refMap.setIsV1(isv1); | ||
| auto evaluator = new P4::EvaluatorPass(&refMap, &typeMap); | ||
| setName("MidEnd"); | ||
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| addPasses({ | ||
| evaluator, | ||
| new VisitFunctor([this, evaluator]() { toplevel = evaluator->getToplevelBlock(); }), | ||
| }); | ||
| } | ||
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| class Options : public CompilerOptions { | ||
| public: | ||
| cstring graphsDir{"."}; | ||
| Options() { | ||
| registerOption("--graphs-dir", "dir", | ||
| [this](const char* arg) { graphsDir = arg; return true; }, | ||
| "Use this directory to dump graphs in dot format " | ||
| "(default is current working directory)\n"); | ||
| } | ||
| }; | ||
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| } // namespace graphs | ||
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| int main(int argc, char *const argv[]) { | ||
| setup_gc_logging(); | ||
| setup_signals(); | ||
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| graphs::Options options; | ||
| options.langVersion = CompilerOptions::FrontendVersion::P4_16; | ||
| options.compilerVersion = "0.0.5"; | ||
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| if (options.process(argc, argv) != nullptr) | ||
| options.setInputFile(); | ||
| if (::errorCount() > 0) | ||
| return 1; | ||
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| auto hook = options.getDebugHook(); | ||
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| auto program = P4::parseP4File(options); | ||
| if (program == nullptr || ::errorCount() > 0) | ||
| return 1; | ||
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| try { | ||
| P4::FrontEnd fe; | ||
| fe.addDebugHook(hook); | ||
| program = fe.run(options, program); | ||
| } catch (const Util::P4CExceptionBase &bug) { | ||
| std::cerr << bug.what() << std::endl; | ||
| return 1; | ||
| } | ||
| if (program == nullptr || ::errorCount() > 0) | ||
| return 1; | ||
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| graphs::MidEnd midEnd(options); | ||
| midEnd.addDebugHook(hook); | ||
| const IR::ToplevelBlock *top = nullptr; | ||
| try { | ||
| top = midEnd.process(program); | ||
| if (options.dumpJsonFile) | ||
| JSONGenerator(*openFile(options.dumpJsonFile, true)) << program << std::endl; | ||
| } catch (const Util::P4CExceptionBase &bug) { | ||
| std::cerr << bug.what() << std::endl; | ||
| return 1; | ||
| } | ||
| if (::errorCount() > 0) | ||
| return 1; | ||
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| LOG1("Generating graphs under " << options.graphsDir); | ||
| LOG1("Generating control graphs"); | ||
| graphs::ControlGraphs cgen(&midEnd.refMap, &midEnd.typeMap, options.graphsDir); | ||
| top->getMain()->apply(cgen); | ||
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| LOG1("Generating parser graphs"); | ||
| graphs::ParserGraphs pgen(&midEnd.refMap, &midEnd.typeMap, options.graphsDir); | ||
| top->getMain()->apply(pgen); | ||
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| return ::errorCount() > 0; | ||
| } |
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I personally think that the
mainfunction for the backend and theGraphmethods implementation belong in 2 different files; apart from that it looks ok.There was a problem hiding this comment.
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created a new file "p4c-graphs.cpp" to accommodate
mainfuncion.