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// slang-emit-cpp.cpp
#include "slang-emit-cpp.h"
#include "../core/slang-writer.h"
#include "slang-emit-source-writer.h"
#include "slang-mangled-lexer.h"
#include <assert.h>
namespace Slang {
static IROp _getCType(IROp op)
{
switch (op)
{
case kIROp_VoidType:
case kIROp_BoolType:
{
return op;
}
case kIROp_Int8Type:
case kIROp_Int16Type:
case kIROp_IntType:
case kIROp_UInt8Type:
case kIROp_UInt16Type:
case kIROp_UIntType:
{
// Promote all these to Int
return kIROp_IntType;
}
case kIROp_Int64Type:
case kIROp_UInt64Type:
{
// Promote all these to Int16, we can just vary the call to make these work
return kIROp_Int64Type;
}
case kIROp_DoubleType:
{
return kIROp_DoubleType;
}
case kIROp_HalfType:
case kIROp_FloatType:
{
// Promote both to float
return kIROp_FloatType;
}
default:
{
SLANG_ASSERT(!"Unhandled type");
return kIROp_undefined;
}
}
}
static UnownedStringSlice _getCTypeVecPostFix(IROp op)
{
switch (op)
{
case kIROp_BoolType: return UnownedStringSlice::fromLiteral("B");
case kIROp_IntType: return UnownedStringSlice::fromLiteral("I");
case kIROp_FloatType: return UnownedStringSlice::fromLiteral("F");
case kIROp_Int64Type: return UnownedStringSlice::fromLiteral("I64");
case kIROp_DoubleType: return UnownedStringSlice::fromLiteral("F64");
default: return UnownedStringSlice::fromLiteral("?");
}
}
#if 0
static UnownedStringSlice _getCTypeName(IROp op)
{
switch (op)
{
case kIROp_BoolType: return UnownedStringSlice::fromLiteral("Bool");
case kIROp_IntType: return UnownedStringSlice::fromLiteral("I32");
case kIROp_FloatType: return UnownedStringSlice::fromLiteral("F32");
case kIROp_Int64Type: return UnownedStringSlice::fromLiteral("I64");
case kIROp_DoubleType: return UnownedStringSlice::fromLiteral("F64");
default: return UnownedStringSlice::fromLiteral("?");
}
}
#endif
void CPPSourceEmitter::_emitCVecType(IROp op, Int size)
{
m_writer->emit("Vec");
const UnownedStringSlice postFix = _getCTypeVecPostFix(_getCType(op));
m_writer->emit(postFix);
if (postFix.size() > 1)
{
m_writer->emit("_");
}
m_writer->emit(size);
}
void CPPSourceEmitter::_emitCMatType(IROp op, IRIntegerValue rowCount, IRIntegerValue colCount)
{
m_writer->emit("Mat");
const UnownedStringSlice postFix = _getCTypeVecPostFix(_getCType(op));
m_writer->emit(postFix);
if (postFix.size() > 1)
{
m_writer->emit("_");
}
m_writer->emit(rowCount);
m_writer->emit(colCount);
}
void CPPSourceEmitter::_emitCFunc(BuiltInCOp cop, IRType* type)
{
emitSimpleType(type);
m_writer->emit("_");
switch (cop)
{
case BuiltInCOp::Init: m_writer->emit("init");
case BuiltInCOp::Splat: m_writer->emit("splat"); break;
}
}
void CPPSourceEmitter::emitParameterGroupImpl(IRGlobalParam* varDecl, IRUniformParameterGroupType* type)
{
SLANG_UNUSED(varDecl);
SLANG_UNUSED(type);
SLANG_ASSERT(!"Not implemented");
}
void CPPSourceEmitter::emitEntryPointAttributesImpl(IRFunc* irFunc, EntryPointLayout* entryPointLayout)
{
SLANG_UNUSED(irFunc);
SLANG_UNUSED(entryPointLayout);
SLANG_ASSERT(!"Not implemented");
}
void CPPSourceEmitter::emitVectorTypeNameImpl(IRType* elementType, IRIntegerValue elementCount)
{
_emitCVecType(elementType->op, Int(elementCount));
}
void CPPSourceEmitter::emitSimpleTypeImpl(IRType* type)
{
switch (type->op)
{
case kIROp_VoidType:
case kIROp_BoolType:
case kIROp_Int8Type:
case kIROp_Int16Type:
case kIROp_IntType:
case kIROp_Int64Type:
case kIROp_UInt8Type:
case kIROp_UInt16Type:
case kIROp_UIntType:
case kIROp_UInt64Type:
case kIROp_FloatType:
case kIROp_DoubleType:
{
m_writer->emit(getDefaultBuiltinTypeName(type->op));
return;
}
case kIROp_HalfType:
{
m_writer->emit("float");
return;
}
case kIROp_StructType:
m_writer->emit(getName(type));
return;
case kIROp_VectorType:
{
auto vecType = (IRVectorType*)type;
emitVectorTypeNameImpl(vecType->getElementType(), GetIntVal(vecType->getElementCount()));
return;
}
case kIROp_MatrixType:
{
auto matType = (IRMatrixType*)type;
const auto rowCount = GetIntVal(matType->getRowCount());
const auto colCount = GetIntVal(matType->getColumnCount());
_emitCMatType(matType->getElementType()->op, rowCount, colCount);
return;
}
}
SLANG_DIAGNOSE_UNEXPECTED(getSink(), SourceLoc(), "unhandled type for cpp target");
}
bool CPPSourceEmitter::tryEmitInstExprImpl(IRInst* inst, IREmitMode mode, const EmitOpInfo& inOuterPrec)
{
SLANG_UNUSED(inOuterPrec);
//EmitOpInfo outerPrec = inOuterPrec;
//bool needClose = false;
switch (inst->op)
{
case kIROp_Construct:
case kIROp_makeVector:
case kIROp_MakeMatrix:
// Simple constructor call
if (inst->getOperandCount() == 1)
{
_emitCFunc(BuiltInCOp::Splat, inst->getDataType());
emitArgs(inst, mode);
}
else
{
_emitCFunc(BuiltInCOp::Init, inst->getDataType());
emitArgs(inst, mode);
}
return true;
default:
return false;
}
}
} // namespace Slang
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