7d246cb19d
The behaviour triggered with this flag is consistent with `-fparse-only` in `flang` (i.e. the throwaway driver). This new spelling is consistent with Clang and gfortran, and was proposed and agreed on for the new driver in [1]. This patch also adds some minimal logic to communicate whether the semantic checks have failed or not. When semantic checks fail, a frontend driver error is generated. The return code from the frontend driver is then determined by checking the driver diagnostics - the presence of driver errors means that the compilation has failed. This logic is consistent with `clang -cc1`. [1] http://lists.llvm.org/pipermail/flang-dev/2020-November/000588.html Differential Revision: https://reviews.llvm.org/D92854
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
//===--- FrontendActions.cpp ----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Frontend/FrontendActions.h"
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#include "flang/Common/default-kinds.h"
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#include "flang/Frontend/CompilerInstance.h"
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#include "flang/Parser/parsing.h"
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#include "flang/Parser/provenance.h"
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#include "flang/Parser/source.h"
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#include "flang/Semantics/semantics.h"
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using namespace Fortran::frontend;
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void InputOutputTestAction::ExecuteAction() {
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// Get the name of the file from FrontendInputFile current.
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std::string path{GetCurrentFileOrBufferName()};
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std::string buf;
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llvm::raw_string_ostream error_stream{buf};
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bool binaryMode = true;
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// Set/store input file info into CompilerInstance.
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CompilerInstance &ci = instance();
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Fortran::parser::AllSources &allSources{ci.allSources()};
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const Fortran::parser::SourceFile *sf;
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sf = allSources.Open(path, error_stream);
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llvm::ArrayRef<char> fileContent = sf->content();
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// Output file descriptor to receive the content of input file.
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std::unique_ptr<llvm::raw_ostream> os;
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// Do not write on the output file if using outputStream_.
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if (ci.IsOutputStreamNull()) {
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os = ci.CreateDefaultOutputFile(
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binaryMode, GetCurrentFileOrBufferName(), "txt");
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if (!os)
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return;
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(*os) << fileContent.data();
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} else {
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ci.WriteOutputStream(fileContent.data());
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}
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}
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void PrintPreprocessedAction::ExecuteAction() {
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std::string buf;
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llvm::raw_string_ostream outForPP{buf};
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// Run the preprocessor
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CompilerInstance &ci = this->instance();
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ci.parsing().DumpCookedChars(outForPP);
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// If a pre-defined output stream exists, dump the preprocessed content there
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if (!ci.IsOutputStreamNull()) {
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// Send the output to the pre-defined output buffer.
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ci.WriteOutputStream(outForPP.str());
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return;
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}
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// Create a file and save the preprocessed output there
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if (auto os{ci.CreateDefaultOutputFile(
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/*Binary=*/true, /*InFile=*/GetCurrentFileOrBufferName())}) {
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(*os) << outForPP.str();
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} else {
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llvm::errs() << "Unable to create the output file\n";
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return;
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}
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}
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void ParseSyntaxOnlyAction::ExecuteAction() {
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CompilerInstance &ci = this->instance();
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// TODO: These should be specifiable by users. For now just use the defaults.
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common::LanguageFeatureControl features;
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Fortran::common::IntrinsicTypeDefaultKinds defaultKinds;
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// Parse
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ci.parsing().Parse(llvm::outs());
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auto &parseTree{*ci.parsing().parseTree()};
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// Prepare semantics
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Fortran::semantics::SemanticsContext semanticsContext{
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defaultKinds, features, ci.allCookedSources()};
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Fortran::semantics::Semantics semantics{
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semanticsContext, parseTree, ci.parsing().cooked().AsCharBlock()};
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// Run semantic checks
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semantics.Perform();
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// Report the diagnostics from the semantic checks
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semantics.EmitMessages(ci.semaOutputStream());
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if (semantics.AnyFatalError()) {
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unsigned DiagID = ci.diagnostics().getCustomDiagID(
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clang::DiagnosticsEngine::Error, "semantic errors in %0");
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ci.diagnostics().Report(DiagID) << GetCurrentFileOrBufferName();
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}
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}
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