public override ExprNode Validate(ExprValidationContext validationContext)
{
if (ChildNodes.Length != 2) {
throw new ExprValidationException("BitWise node must have 2 parameters");
}
var typeOne = ChildNodes[0].Forge.EvaluationType.GetBoxedType();
var typeTwo = ChildNodes[1].Forge.EvaluationType.GetBoxedType();
CheckNumericOrBoolean(typeOne);
CheckNumericOrBoolean(typeTwo);
if (typeOne.IsFloatingPointClass() || typeTwo.IsFloatingPointClass()) {
throw new ExprValidationException(
"Invalid type for bitwise " + BitWiseOpEnum.ComputeDescription + " operator");
}
if (typeOne != typeTwo) {
throw new ExprValidationException(
"Bitwise expressions must be of the same type for bitwise " +
BitWiseOpEnum.ComputeDescription +
" operator");
}
var computer = BitWiseOpEnum.GetComputer(typeOne);
_forge = new ExprBitWiseNodeForge(this, typeOne, computer);
return null;
}
internal ExprBitWiseNodeForgeEval(
ExprBitWiseNodeForge forge,
ExprEvaluator lhs,
ExprEvaluator rhs)
{
this.forge = forge;
this.lhs = lhs;
this.rhs = rhs;
}
public static CodegenExpression Codegen(
ExprBitWiseNodeForge forge,
Type requiredType,
CodegenMethodScope codegenMethodScope,
ExprForgeCodegenSymbol exprSymbol,
CodegenClassScope codegenClassScope,
ExprNode lhs,
ExprNode rhs)
{
var methodNode = codegenMethodScope.MakeChild(
forge.EvaluationType,
typeof(ExprBitWiseNodeForgeEval),
codegenClassScope);
var leftType = lhs.Forge.EvaluationType;
var rightType = rhs.Forge.EvaluationType;
var block = methodNode.Block
.DeclareVar(
leftType,
"left",
lhs.Forge.EvaluateCodegen(leftType, methodNode, exprSymbol, codegenClassScope))
.DeclareVar(
rightType,
"right",
rhs.Forge.EvaluateCodegen(rightType, methodNode, exprSymbol, codegenClassScope));
if (leftType.CanBeNull()) {
block.IfRefNullReturnNull("left");
}
if (rhs.Forge.EvaluationType.CanBeNull()) {
block.IfRefNullReturnNull("right");
}
var primitive = forge.EvaluationType.GetPrimitiveType();
block
.DeclareVar(primitive, "l", Unbox(Ref("left"), leftType))
.DeclareVar(primitive, "r", Unbox(Ref("right"), rightType));
block.MethodReturn(
Cast(primitive, Op(Ref("l"), forge.ForgeRenderable.BitWiseOpEnum.ExpressionText, Ref("r"))));
return LocalMethod(methodNode);
}