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Diffstat (limited to 'utils/TableGen/ClangDiagnosticsEmitter.cpp')
| -rw-r--r-- | utils/TableGen/ClangDiagnosticsEmitter.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/utils/TableGen/ClangDiagnosticsEmitter.cpp b/utils/TableGen/ClangDiagnosticsEmitter.cpp new file mode 100644 index 000000000000..919ae9befed3 --- /dev/null +++ b/utils/TableGen/ClangDiagnosticsEmitter.cpp @@ -0,0 +1,169 @@ +//=- ClangDiagnosticsEmitter.cpp - Generate Clang diagnostics tables -*- C++ -*- +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// These tablegen backends emit Clang diagnostics tables. +// +//===----------------------------------------------------------------------===// + +#include "ClangDiagnosticsEmitter.h" +#include "Record.h" +#include "llvm/Support/Debug.h" +#include "llvm/Support/Compiler.h" +#include "llvm/Support/Streams.h" +#include "llvm/ADT/DenseSet.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/ADT/VectorExtras.h" +#include <set> +#include <map> +using namespace llvm; + +//===----------------------------------------------------------------------===// +// Warning Tables (.inc file) generation. +//===----------------------------------------------------------------------===// + +void ClangDiagsDefsEmitter::run(std::ostream &OS) { + // Write the #if guard + if (!Component.empty()) { + std::string ComponentName = UppercaseString(Component); + OS << "#ifdef " << ComponentName << "START\n"; + OS << "__" << ComponentName << "START = DIAG_START_" << ComponentName + << ",\n"; + OS << "#undef " << ComponentName << "START\n"; + OS << "#endif\n"; + } + + const std::vector<Record*> &Diags = + Records.getAllDerivedDefinitions("Diagnostic"); + + for (unsigned i = 0, e = Diags.size(); i != e; ++i) { + const Record &R = *Diags[i]; + // Filter by component. + if (!Component.empty() && Component != R.getValueAsString("Component")) + continue; + + OS << "DIAG(" << R.getName() << ", "; + OS << R.getValueAsDef("Class")->getName(); + OS << ", diag::" << R.getValueAsDef("DefaultMapping")->getName(); + + // Description string. + OS << ", \""; + std::string S = R.getValueAsString("Text"); + EscapeString(S); + OS << S << "\""; + + // Warning associated with the diagnostic. + if (DefInit *DI = dynamic_cast<DefInit*>(R.getValueInit("Group"))) { + S = DI->getDef()->getValueAsString("GroupName"); + EscapeString(S); + OS << ", \"" << S << "\""; + } else { + OS << ", 0"; + } + OS << ")\n"; + } +} + +//===----------------------------------------------------------------------===// +// Warning Group Tables generation +//===----------------------------------------------------------------------===// + +struct GroupInfo { + std::vector<const Record*> DiagsInGroup; + std::vector<std::string> SubGroups; + unsigned IDNo; +}; + +void ClangDiagGroupsEmitter::run(std::ostream &OS) { + // Invert the 1-[0/1] mapping of diags to group into a one to many mapping of + // groups to diags in the group. + std::map<std::string, GroupInfo> DiagsInGroup; + + std::vector<Record*> Diags = + Records.getAllDerivedDefinitions("Diagnostic"); + for (unsigned i = 0, e = Diags.size(); i != e; ++i) { + const Record *R = Diags[i]; + DefInit *DI = dynamic_cast<DefInit*>(R->getValueInit("Group")); + if (DI == 0) continue; + std::string GroupName = DI->getDef()->getValueAsString("GroupName"); + DiagsInGroup[GroupName].DiagsInGroup.push_back(R); + } + + // Add all DiagGroup's to the DiagsInGroup list to make sure we pick up empty + // groups (these are warnings that GCC supports that clang never produces). + Diags = Records.getAllDerivedDefinitions("DiagGroup"); + for (unsigned i = 0, e = Diags.size(); i != e; ++i) { + Record *Group = Diags[i]; + GroupInfo &GI = DiagsInGroup[Group->getValueAsString("GroupName")]; + + std::vector<Record*> SubGroups = Group->getValueAsListOfDefs("SubGroups"); + for (unsigned j = 0, e = SubGroups.size(); j != e; ++j) + GI.SubGroups.push_back(SubGroups[j]->getValueAsString("GroupName")); + } + + // Assign unique ID numbers to the groups. + unsigned IDNo = 0; + for (std::map<std::string, GroupInfo>::iterator + I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I, ++IDNo) + I->second.IDNo = IDNo; + + // Walk through the groups emitting an array for each diagnostic of the diags + // that are mapped to. + OS << "\n#ifdef GET_DIAG_ARRAYS\n"; + unsigned MaxLen = 0; + for (std::map<std::string, GroupInfo>::iterator + I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) { + MaxLen = std::max(MaxLen, (unsigned)I->first.size()); + + std::vector<const Record*> &V = I->second.DiagsInGroup; + if (!V.empty()) { + OS << "static const short DiagArray" << I->second.IDNo << "[] = { "; + for (unsigned i = 0, e = V.size(); i != e; ++i) + OS << "diag::" << V[i]->getName() << ", "; + OS << "-1 };\n"; + } + + const std::vector<std::string> &SubGroups = I->second.SubGroups; + if (!SubGroups.empty()) { + OS << "static const char DiagSubGroup" << I->second.IDNo << "[] = { "; + for (unsigned i = 0, e = SubGroups.size(); i != e; ++i) { + std::map<std::string, GroupInfo>::iterator RI = + DiagsInGroup.find(SubGroups[i]); + assert(RI != DiagsInGroup.end() && "Referenced without existing?"); + OS << RI->second.IDNo << ", "; + } + OS << "-1 };\n"; + } + } + OS << "#endif // GET_DIAG_ARRAYS\n\n"; + + // Emit the table now. + OS << "\n#ifdef GET_DIAG_TABLE\n"; + for (std::map<std::string, GroupInfo>::iterator + I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) { + std::string S = I->first; + EscapeString(S); + // Group option string. + OS << " { \"" << S << "\"," + << std::string(MaxLen-I->first.size()+1, ' '); + + // Diagnostics in the group. + if (I->second.DiagsInGroup.empty()) + OS << "0, "; + else + OS << "DiagArray" << I->second.IDNo << ", "; + + // Subgroups. + if (I->second.SubGroups.empty()) + OS << 0; + else + OS << "DiagSubGroup" << I->second.IDNo; + OS << " },\n"; + } + OS << "#endif // GET_DIAG_TABLE\n\n"; +} |