public static int CheckConversion(ConversionBlock block, Expression expression)
{
try
{
var rr = block.Emitter.Resolver.ResolveNode(expression, block.Emitter);
var conversion = block.Emitter.Resolver.Resolver.GetConversion(expression);
var expectedType = block.Emitter.Resolver.Resolver.GetExpectedType(expression);
var level = ConversionBlock.CheckDecimalConversion(block, expression, rr, expectedType, conversion) ? 1 : 0;
if (Helpers.IsDecimalType(expectedType, block.Emitter.Resolver) && !conversion.IsUserDefined)
{
return(level);
}
if (conversion == null)
{
return(level);
}
if (conversion.IsIdentityConversion)
{
return(level);
}
var isNumLifted = conversion.IsImplicit && conversion.IsLifted && conversion.IsNumericConversion && !(expression is BinaryOperatorExpression);
if (isNumLifted && !conversion.IsUserDefined)
{
return(level);
}
bool isLifted = conversion.IsLifted && !isNumLifted && !(block is CastBlock) && !Helpers.IsDecimalType(expectedType, block.Emitter.Resolver);
if (isLifted)
{
level++;
block.Write("Bridge.Nullable.lift(");
}
if (conversion.IsUserDefined)
{
var method = conversion.Method;
string inline = block.Emitter.GetInline(method);
if (conversion.IsExplicit && !string.IsNullOrWhiteSpace(inline))
{
// Still returns true if Nullable.lift( was written.
return(level);
}
if (!string.IsNullOrWhiteSpace(inline))
{
if (expression is InvocationExpression)
{
new InlineArgumentsBlock(block.Emitter, new ArgumentsInfo(block.Emitter, (InvocationExpression)expression), inline).Emit();
}
else if (expression is ObjectCreateExpression)
{
new InlineArgumentsBlock(block.Emitter, new ArgumentsInfo(block.Emitter, (InvocationExpression)expression), inline).Emit();
}
else if (expression is UnaryOperatorExpression)
{
var unaryExpression = (UnaryOperatorExpression)expression;
var resolveOperator = block.Emitter.Resolver.ResolveNode(unaryExpression, block.Emitter);
OperatorResolveResult orr = resolveOperator as OperatorResolveResult;
new InlineArgumentsBlock(block.Emitter, new ArgumentsInfo(block.Emitter, unaryExpression, orr, method), inline).Emit();
}
else if (expression is BinaryOperatorExpression)
{
var binaryExpression = (BinaryOperatorExpression)expression;
var resolveOperator = block.Emitter.Resolver.ResolveNode(binaryExpression, block.Emitter);
OperatorResolveResult orr = resolveOperator as OperatorResolveResult;
new InlineArgumentsBlock(block.Emitter, new ArgumentsInfo(block.Emitter, binaryExpression, orr, method), inline).Emit();
}
else
{
new InlineArgumentsBlock(block.Emitter, new ArgumentsInfo(block.Emitter, expression), inline).Emit();
}
block.DisableEmitConversionExpression = true;
// Still returns true if Nullable.lift( was written.
return(level);
}
else
{
if (method.DeclaringTypeDefinition != null && block.Emitter.Validator.IsIgnoreType(method.DeclaringTypeDefinition))
{
// Still returns true if Nullable.lift( was written.
return(level);
}
block.Write(BridgeTypes.ToJsName(method.DeclaringType, block.Emitter));
block.WriteDot();
block.Write(OverloadsCollection.Create(block.Emitter, method).GetOverloadName());
}
if (isLifted)
{
block.WriteComma();
}
else
{
block.WriteOpenParentheses();
level++;
}
var arg = method.Parameters[0];
if (Helpers.IsDecimalType(arg.Type, block.Emitter.Resolver, arg.IsParams) && !Helpers.IsDecimalType(rr.Type, block.Emitter.Resolver) && !expression.IsNull)
{
block.Write("Bridge.Decimal");
if (NullableType.IsNullable(arg.Type) && ConversionBlock.ShouldBeLifted(expression))
{
block.Write(".lift");
}
block.WriteOpenParentheses();
level++;
}
return(level);
}
// Still returns true if Nullable.lift( was written.
return(level);
}
catch
{
}
return(0);
}
