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//===--- ParserActions.cpp ------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/
//
//===----------------------------------------------------------------------===//
#include "flang/Frontend/ParserActions.h"
#include "flang/Frontend/CompilerInstance.h"
#include "flang/Lower/Bridge.h"
#include "flang/Lower/PFTBuilder.h"
#include "flang/Parser/dump-parse-tree.h"
#include "flang/Parser/parsing.h"
#include "flang/Parser/provenance.h"
#include "flang/Parser/source.h"
#include "flang/Parser/unparse.h"
#include "flang/Semantics/unparse-with-symbols.h"
#include "llvm/Support/raw_ostream.h"
namespace Fortran::frontend {
parser::AllCookedSources &getAllCooked(CompilerInstance &ci) {
return ci.getParsing().allCooked();
}
void parseAndLowerTree(CompilerInstance &ci, lower::LoweringBridge &lb) {
parser::Program &parseTree{*ci.getParsing().parseTree()};
lb.lower(parseTree, ci.getSemanticsContext());
}
void dumpTree(CompilerInstance &ci) {
auto &parseTree{ci.getParsing().parseTree()};
llvm::outs() << "========================";
llvm::outs() << " Flang: parse tree dump ";
llvm::outs() << "========================\n";
parser::DumpTree(llvm::outs(), parseTree, &ci.getInvocation().getAsFortran());
}
void dumpProvenance(CompilerInstance &ci) {
ci.getParsing().DumpProvenance(llvm::outs());
}
void dumpPreFIRTree(CompilerInstance &ci) {
auto &parseTree{*ci.getParsing().parseTree()};
if (auto ast{lower::createPFT(parseTree, ci.getSemanticsContext())}) {
lower::dumpPFT(llvm::outs(), *ast);
} else {
unsigned diagID = ci.getDiagnostics().getCustomDiagID(
clang::DiagnosticsEngine::Error, "Pre FIR Tree is NULL.");
ci.getDiagnostics().Report(diagID);
}
}
void formatOrDumpPrescanner(std::string &buf,
llvm::raw_string_ostream &outForPP,
CompilerInstance &ci) {
if (ci.getInvocation().getPreprocessorOpts().showMacros) {
ci.getParsing().EmitPreprocessorMacros(outForPP);
} else if (ci.getInvocation().getPreprocessorOpts().noReformat) {
ci.getParsing().DumpCookedChars(outForPP);
} else {
ci.getParsing().EmitPreprocessedSource(
outForPP, !ci.getInvocation().getPreprocessorOpts().noLineDirectives);
}
// Print getDiagnostics from the prescanner
ci.getParsing().messages().Emit(llvm::errs(), ci.getAllCookedSources());
}
struct MeasurementVisitor {
template <typename A>
bool Pre(const A &) {
return true;
}
template <typename A>
void Post(const A &) {
++objects;
bytes += sizeof(A);
}
size_t objects{0}, bytes{0};
};
void debugMeasureParseTree(CompilerInstance &ci, llvm::StringRef filename) {
// Parse. In case of failure, report and return.
ci.getParsing().Parse(llvm::outs());
if ((ci.getParsing().parseTree().has_value() &&
!ci.getParsing().consumedWholeFile()) ||
(!ci.getParsing().messages().empty() &&
(ci.getInvocation().getWarnAsErr() ||
ci.getParsing().messages().AnyFatalError()))) {
unsigned diagID = ci.getDiagnostics().getCustomDiagID(
clang::DiagnosticsEngine::Error, "Could not parse %0");
ci.getDiagnostics().Report(diagID) << filename;
ci.getParsing().messages().Emit(llvm::errs(), ci.getAllCookedSources());
return;
}
// Report the getDiagnostics from parsing
ci.getParsing().messages().Emit(llvm::errs(), ci.getAllCookedSources());
auto &parseTree{ci.getParsing().parseTree()};
MeasurementVisitor visitor;
parser::Walk(parseTree, visitor);
llvm::outs() << "Parse tree comprises " << visitor.objects
<< " objects and occupies " << visitor.bytes
<< " total bytes.\n";
}
void debugUnparseNoSema(CompilerInstance &ci, llvm::raw_ostream &out) {
auto &invoc = ci.getInvocation();
auto &parseTree{ci.getParsing().parseTree()};
// TODO: Options should come from CompilerInvocation
Unparse(out, *parseTree, ci.getInvocation().getLangOpts(),
/*encoding=*/parser::Encoding::UTF_8,
/*capitalizeKeywords=*/true, /*backslashEscapes=*/false,
/*preStatement=*/nullptr,
invoc.getUseAnalyzedObjectsForUnparse() ? &invoc.getAsFortran()
: nullptr);
}
void debugUnparseWithSymbols(CompilerInstance &ci) {
auto &parseTree{*ci.getParsing().parseTree()};
semantics::UnparseWithSymbols(llvm::outs(), parseTree,
ci.getInvocation().getLangOpts(),
/*encoding=*/parser::Encoding::UTF_8);
}
void debugUnparseWithModules(CompilerInstance &ci) {
auto &parseTree{*ci.getParsing().parseTree()};
semantics::UnparseWithModules(llvm::outs(), ci.getSemantics().context(),
parseTree,
/*encoding=*/parser::Encoding::UTF_8);
}
void debugDumpParsingLog(CompilerInstance &ci) {
ci.getParsing().Parse(llvm::errs());
ci.getParsing().DumpParsingLog(llvm::outs());
}
} // namespace Fortran::frontend
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