llvm-6502/support/tools/TableGen/Record.cpp
Chris Lattner e62c1185be Initial checkin of TableGen utility
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4843 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-02 01:23:04 +00:00

372 lines
10 KiB
C++

//===- Record.cpp - Record implementation ---------------------------------===//
//
//
//===----------------------------------------------------------------------===//
#include "Record.h"
//===----------------------------------------------------------------------===//
// Type implementations
//===----------------------------------------------------------------------===//
void RecTy::dump() const { print(std::cerr); }
Init *BitRecTy::convertValue(BitsInit *BI) {
if (BI->getNumBits() != 1) return 0; // Only accept if just one bit!
return BI->getBit(0);
}
Init *BitRecTy::convertValue(IntInit *II) {
int Val = II->getValue();
if (Val != 0 && Val != 1) return 0; // Only accept 0 or 1 for a bit!
delete II;
return new BitInit(Val != 0);
}
Init *BitRecTy::convertValue(VarInit *VI) {
if (dynamic_cast<BitRecTy*>(VI->getType()))
return VI; // Accept variable if it is already of bit type!
return 0;
}
Init *BitsRecTy::convertValue(UnsetInit *UI) {
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new UnsetInit());
return Ret;
}
Init *BitsRecTy::convertValue(BitInit *UI) {
if (Size != 1) return 0; // Can only convert single bit...
BitsInit *Ret = new BitsInit(1);
Ret->setBit(0, UI);
return Ret;
}
// convertValue from Int initializer to bits type: Split the integer up into the
// appropriate bits...
//
Init *BitsRecTy::convertValue(IntInit *II) {
int Value = II->getValue();
delete II;
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new BitInit(Value & (1 << i)));
return Ret;
}
Init *BitsRecTy::convertValue(BitsInit *BI) {
// If the number of bits is right, return it. Otherwise we need to expand or
// truncate...
if (BI->getNumBits() == Size) return BI;
return 0;
}
Init *BitsRecTy::convertValue(VarInit *VI) {
if (BitsRecTy *BRT = dynamic_cast<BitsRecTy*>(VI->getType()))
if (BRT->Size == Size) {
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new VarBitInit(VI, i));
return Ret;
}
if (Size == 1 && dynamic_cast<BitRecTy*>(VI->getType())) {
BitsInit *Ret = new BitsInit(1);
Ret->setBit(0, VI);
return Ret;
}
return 0;
}
Init *IntRecTy::convertValue(BitsInit *BI) {
int Result = 0;
for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
if (BitInit *Bit = dynamic_cast<BitInit*>(BI->getBit(i))) {
Result |= Bit->getValue() << i;
} else {
return 0;
}
return new IntInit(Result);
}
Init *IntRecTy::convertValue(VarInit *VI) {
if (dynamic_cast<IntRecTy*>(VI->getType()))
return VI; // Accept variable if already of the right type!
return 0;
}
Init *StringRecTy::convertValue(VarInit *VI) {
if (dynamic_cast<StringRecTy*>(VI->getType()))
return VI; // Accept variable if already of the right type!
return 0;
}
void ListRecTy::print(std::ostream &OS) const {
OS << "list<" << Class->getName() << ">";
}
Init *ListRecTy::convertValue(ListInit *LI) {
// Verify that all of the elements of the list are subclasses of the
// appopriate class!
for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
if (!LI->getElement(i)->isSubClassOf(Class))
return 0;
return LI;
}
void RecordRecTy::print(std::ostream &OS) const {
OS << Rec->getName();
}
Init *RecordRecTy::convertValue(DefInit *DI) {
// Ensure that DI is a subclass of Rec.
if (!DI->getDef()->isSubClassOf(Rec))
return 0;
return DI;
}
//===----------------------------------------------------------------------===//
// Initializer implementations
//===----------------------------------------------------------------------===//
void Init::dump() const { return print(std::cerr); }
Init *BitsInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= getNumBits()) {
delete BI;
return 0;
}
BI->setBit(i, getBit(Bits[i]));
}
return BI;
}
void BitsInit::print(std::ostream &OS) const {
//if (!printInHex(OS)) return;
if (!printAsVariable(OS)) return;
if (!printAsUnset(OS)) return;
OS << "{ ";
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
if (i) OS << ", ";
getBit(e-i-1)->print(OS);
}
OS << " }";
}
bool BitsInit::printInHex(std::ostream &OS) const {
// First, attempt to convert the value into an integer value...
int Result = 0;
for (unsigned i = 0, e = getNumBits(); i != e; ++i)
if (BitInit *Bit = dynamic_cast<BitInit*>(getBit(i))) {
Result |= Bit->getValue() << i;
} else {
return true;
}
OS << "0x" << std::hex << Result << std::dec;
return false;
}
bool BitsInit::printAsVariable(std::ostream &OS) const {
// Get the variable that we may be set equal to...
assert(getNumBits() != 0);
VarBitInit *FirstBit = dynamic_cast<VarBitInit*>(getBit(0));
if (FirstBit == 0) return true;
VarInit *Var = FirstBit->getVariable();
// Check to make sure the types are compatible.
BitsRecTy *Ty = dynamic_cast<BitsRecTy*>(Var->getType());
if (Ty == 0) return true;
if (Ty->getNumBits() != getNumBits()) return true; // Incompatible types!
// Check to make sure all bits are referring to the right bits in the variable
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
VarBitInit *Bit = dynamic_cast<VarBitInit*>(getBit(i));
if (Bit == 0 || Bit->getVariable() != Var || Bit->getBitNum() != i)
return true;
}
OS << Var->getName();
return false;
}
bool BitsInit::printAsUnset(std::ostream &OS) const {
for (unsigned i = 0, e = getNumBits(); i != e; ++i)
if (!dynamic_cast<UnsetInit*>(getBit(i)))
return true;
OS << "?";
return false;
}
Init *IntInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= 32) {
delete BI;
return 0;
}
BI->setBit(i, new BitInit(Value & (1 << Bits[i])));
}
return BI;
}
void ListInit::print(std::ostream &OS) const {
OS << "[";
for (unsigned i = 0, e = Records.size(); i != e; ++i) {
if (i) OS << ", ";
OS << Records[i]->getName();
}
OS << "]";
}
Init *VarInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsRecTy *T = dynamic_cast<BitsRecTy*>(Ty);
if (T == 0) return 0; // Cannot subscript a non-bits variable...
unsigned NumBits = T->getNumBits();
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= NumBits) {
delete BI;
return 0;
}
BI->setBit(i, new VarBitInit(this, Bits[i]));
}
return BI;
}
Init *BitsInit::resolveReferences(Record &R) {
bool Changed = false;
BitsInit *New = new BitsInit(getNumBits());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
Init *B;
New->setBit(i, getBit(i));
do {
B = New->getBit(i);
New->setBit(i, B->resolveReferences(R));
Changed |= B != New->getBit(i);
} while (B != New->getBit(i));
}
if (Changed)
return New;
delete New;
return this;
}
Init *VarBitInit::resolveReferences(Record &R) {
if (R.isTemplateArg(getVariable()->getName()))
return this;
RecordVal *RV = R.getValue(getVariable()->getName());
assert(RV && "Reference to a non-existant variable?");
assert(dynamic_cast<BitsInit*>(RV->getValue()));
BitsInit *BI = (BitsInit*)RV->getValue();
assert(getBitNum() < BI->getNumBits() && "Bit reference out of range!");
Init *B = BI->getBit(getBitNum());
if (!dynamic_cast<UnsetInit*>(B)) // If the bit is not set...
return B; // Replace the VarBitInit with it.
return this;
}
void DefInit::print(std::ostream &OS) const {
OS << Def->getName();
}
//===----------------------------------------------------------------------===//
// Other implementations
//===----------------------------------------------------------------------===//
RecordVal::RecordVal(const std::string &N, RecTy *T, unsigned P)
: Name(N), Ty(T), Prefix(P) {
Value = Ty->convertValue(new UnsetInit());
assert(Value && "Cannot create unset value for current type!");
}
void RecordVal::dump() const { std::cerr << *this; }
void RecordVal::print(std::ostream &OS, bool PrintSem) const {
if (getPrefix()) OS << "field ";
OS << *getType() << " " << getName();
if (getValue()) {
OS << " = " << *getValue();
}
if (PrintSem) OS << ";\n";
}
// resolveReferences - If there are any field references that refer to fields
// that have been filled in, we can propagate the values now.
//
void Record::resolveReferences() {
for (unsigned i = 0, e = Values.size(); i != e; ++i)
Values[i].setValue(Values[i].getValue()->resolveReferences(*this));
}
void Record::dump() const { std::cerr << *this; }
std::ostream &operator<<(std::ostream &OS, const Record &R) {
OS << R.getName();
const std::vector<std::string> &TArgs = R.getTemplateArgs();
if (!TArgs.empty()) {
OS << "<";
for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
if (i) OS << ", ";
const RecordVal *RV = R.getValue(TArgs[i]);
assert(RV && "Template argument record not found??");
RV->print(OS, false);
}
OS << ">";
}
OS << " {";
const std::vector<Record*> &SC = R.getSuperClasses();
if (!SC.empty()) {
OS << "\t//";
for (unsigned i = 0, e = SC.size(); i != e; ++i)
OS << " " << SC[i]->getName();
}
OS << "\n";
const std::vector<RecordVal> &Vals = R.getValues();
for (unsigned i = 0, e = Vals.size(); i != e; ++i)
if (Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
OS << Vals[i];
for (unsigned i = 0, e = Vals.size(); i != e; ++i)
if (!Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
OS << Vals[i];
return OS << "}\n";
}
void RecordKeeper::dump() const { std::cerr << *this; }
std::ostream &operator<<(std::ostream &OS, const RecordKeeper &RK) {
OS << "------------- Classes -----------------\n";
const std::map<std::string, Record*> &Classes = RK.getClasses();
for (std::map<std::string, Record*>::const_iterator I = Classes.begin(),
E = Classes.end(); I != E; ++I)
OS << "class " << *I->second;
OS << "------------- Defs -----------------\n";
const std::map<std::string, Record*> &Defs = RK.getDefs();
for (std::map<std::string, Record*>::const_iterator I = Defs.begin(),
E = Defs.end(); I != E; ++I)
OS << "def " << *I->second;
return OS;
}