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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/Streams.h"
#include "llvm/ADT/VectorExtras.h"
using namespace llvm;
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))
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));
}
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);
}
}
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