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//=- 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/VectorExtras.h"
#include "llvm/ADT/DenseSet.h"
#include <set>
#include <map>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Generic routines for all Clang TableGen backens.
//===----------------------------------------------------------------------===//
typedef std::vector<Record*> RecordVector;
typedef std::vector<Record*> SuperClassVector;
typedef std::vector<RecordVal> RecordValVector;
static const RecordVal* findRecordVal(const Record& R, const std::string &key) {
const RecordValVector &Vals = R.getValues();
for (RecordValVector::const_iterator I=Vals.begin(), E=Vals.end(); I!=E; ++I)
if ((*I).getName() == key)
return &*I;
return 0;
}
static const Record* getDiagKind(const Record* DiagClass, const Record &R) {
const SuperClassVector &SC = R.getSuperClasses();
for (SuperClassVector::const_iterator I=SC.begin(), E=SC.end(); I!=E; ++I)
if ((*I)->isSubClassOf(DiagClass) &&
(*I)->getName() != "DiagnosticControlled")
return *I;
return 0;
}
static void EmitEscaped(std::ostream& OS, const std::string &s) {
for (std::string::const_iterator I=s.begin(), E=s.end(); I!=E; ++I)
switch (*I) {
default: OS << *I; break;
case '\"': OS << "\\" << *I; break;
case '\\': OS << "\\\\"; break;
}
}
static void EmitAllCaps(std::ostream& OS, const std::string &s) {
for (std::string::const_iterator I=s.begin(), E=s.end(); I!=E; ++I)
OS << char(toupper(*I));
}
//===----------------------------------------------------------------------===//
// Warning Tables (.inc file) generation.
//===----------------------------------------------------------------------===//
static void ProcessDiag(std::ostream& OS, const Record* DiagClass,
const Record& R) {
const Record* DiagKind = getDiagKind(DiagClass, R);
if (!DiagKind)
return;
OS << "DIAG(" << R.getName() << ", ";
EmitAllCaps(OS, DiagKind->getName());
const RecordVal* Text = findRecordVal(R, "Text");
assert(Text && "No 'Text' entry in Diagnostic.");
const StringInit* TextVal = dynamic_cast<const StringInit*>(Text->getValue());
assert(TextVal && "Value 'Text' must be a string.");
OS << ", \"";
EmitEscaped(OS, TextVal->getValue());
OS << "\")\n";
}
void ClangDiagsDefsEmitter::run(std::ostream &OS) {
const RecordVector &Diags = Records.getAllDerivedDefinitions("Diagnostic");
const Record* DiagClass = Records.getClass("Diagnostic");
assert(DiagClass && "No Diagnostic class defined.");
// Write the #if guard
if (!Component.empty()) {
OS << "#ifdef ";
EmitAllCaps(OS, Component);
OS << "START\n__";
EmitAllCaps(OS, Component);
OS << "START = DIAG_START_";
EmitAllCaps(OS, Component);
OS << ",\n#undef ";
EmitAllCaps(OS, Component);
OS << "START\n#endif\n";
}
for (RecordVector::const_iterator I=Diags.begin(), E=Diags.end(); I!=E; ++I) {
if (!Component.empty()) {
const RecordVal* V = findRecordVal(**I, "Component");
if (!V)
continue;
const StringInit* SV = dynamic_cast<const StringInit*>(V->getValue());
if (SV->getValue() != Component)
continue;
}
ProcessDiag(OS, DiagClass, **I);
}
}
//===----------------------------------------------------------------------===//
// Warning Group Tables generation.
//===----------------------------------------------------------------------===//
static const std::string &getOptName(const Record *R) {
const RecordVal *V = findRecordVal(*R, "Name");
assert(V && "Options must have a 'Name' value.");
const StringInit* SV = dynamic_cast<const StringInit*>(V->getValue());
assert(SV && "'Name' entry must be a string.");
return SV->getValue();
}
namespace {
struct VISIBILITY_HIDDEN CompareOptName {
bool operator()(const Record* A, const Record* B) {
return getOptName(A) < getOptName(B);
}
};
}
typedef std::set<const Record*> DiagnosticSet;
typedef std::map<const Record*, DiagnosticSet, CompareOptName> OptionMap;
typedef llvm::DenseSet<const ListInit*> VisitedLists;
static void BuildGroup(DiagnosticSet& DS, VisitedLists &Visited, const Init* X);
static void BuildGroup(DiagnosticSet &DS, VisitedLists &Visited,
const ListInit* LV) {
// Simple hack to prevent including a list multiple times. This may be useful
// if one declares an Option by including a bunch of other Options that
// include other Options, etc.
if (Visited.count(LV))
return;
Visited.insert(LV);
// Iterate through the list and grab all DiagnosticControlled.
for (ListInit::const_iterator I = LV->begin(), E = LV->end(); I!=E; ++I)
BuildGroup(DS, Visited, *I);
}
static void BuildGroup(DiagnosticSet& DS, VisitedLists &Visited,
const Record *Def) {
// If an Option includes another Option, inline the Diagnostics of the
// included Option.
if (Def->isSubClassOf("Option")) {
if (const RecordVal* V = findRecordVal(*Def, "Members"))
if (const ListInit* LV = dynamic_cast<const ListInit*>(V->getValue()))
BuildGroup(DS, Visited, LV);
return;
}
if (Def->isSubClassOf("DiagnosticControlled"))
DS.insert(Def);
}
static void BuildGroup(DiagnosticSet& DS, VisitedLists &Visited,
const Init* X) {
if (const DefInit *D = dynamic_cast<const DefInit*>(X))
BuildGroup(DS, Visited, D->getDef());
// We may have some other cases here in the future.
}
void ClangOptionsEmitter::run(std::ostream &OS) {
// Build up a map from options to controlled diagnostics.
OptionMap OM;
const RecordVector &Opts = Records.getAllDerivedDefinitions("Option");
for (RecordVector::const_iterator I=Opts.begin(), E=Opts.end(); I!=E; ++I)
if (const RecordVal* V = findRecordVal(**I, "Members"))
if (const ListInit* LV = dynamic_cast<const ListInit*>(V->getValue())) {
VisitedLists Visited;
BuildGroup(OM[*I], Visited, LV);
}
// Iterate through the OptionMap and emit the declarations.
for (OptionMap::iterator I = OM.begin(), E = OM.end(); I!=E; ++I) {
// Output the option.
OS << "static const diag::kind " << I->first->getName() << "[] = { ";
DiagnosticSet &DS = I->second;
bool first = true;
for (DiagnosticSet::iterator I2 = DS.begin(), E2 = DS.end(); I2!=E2; ++I2) {
if (first)
first = false;
else
OS << ", ";
OS << "diag::" << (*I2)->getName();
}
OS << " };\n";
}
// Now emit the OptionTable table.
OS << "\nstatic const WarningOption OptionTable[] = {";
bool first = true;
for (OptionMap::iterator I = OM.begin(), E = OM.end(); I!=E; ++I) {
if (first)
first = false;
else
OS << ',';
OS << "\n {\"" << getOptName(I->first)
<< "\", DIAGS(" << I->first->getName() << ")}";
}
OS << "\n};\n";
}
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