public IPhpValue TranslateToPhp(IExternalTranslationContext ctx, CsharpInstancePropertyAccessExpression src)
{
if (src.Member.DeclaringType == typeof(MySQLi))
{
var n = src.Member.Name;
if (n == "WasConnectionError" || n == "WasSuccessfulConnection")
{
// according to error http://www.php.net/manual/en/mysqli.construct.php
IPhpValue getError;
if (ctx.PhpVersion <= PhpVersions.PHP_5_3_0)
{
getError = new PhpMethodCallExpression("mysqli_connect_error");
}
else
{
getError = new PhpInstanceFieldAccessExpression("connect_error", ctx.TranslateValue(src.TargetObject), null);
}
var checkEmpty = new PhpMethodCallExpression("empty", getError);
if (n == "WasSuccessfulConnection")
{
return(checkEmpty);
}
var checkNotEmpty = new PhpUnaryOperatorExpression(checkEmpty, "!");
return(checkNotEmpty);
}
}
return(null);
}
protected override IPhpValue VisitUnaryOperatorExpression(UnaryOperatorExpression src)
{
var v = TransValue(src.Operand);
var a = new PhpUnaryOperatorExpression(v, src.Operator);
return(SimplifyPhpExpression(a));
}
protected virtual T VisitPhpUnaryOperatorExpression(PhpUnaryOperatorExpression node)
{
if (ThrowNotImplementedException)
{
throw new NotImplementedException(string.Format("Method {0} is not supported in class {1}", "VisitPhpUnaryOperatorExpression", this.GetType().FullName));
}
return(default(T));
}
private IPhpValue _Nullable()
{
var s = src.Member.Name;
if (s == "Value")
{
var targetObject = ctx.TranslateValue(src.TargetObject);
return(targetObject);
}
if (s == "HasValue")
{
var targetObject = ctx.TranslateValue(src.TargetObject);
var _isNull = new PhpMethodCallExpression("is_null", targetObject);
var _notNull = new PhpUnaryOperatorExpression(_isNull, "!");
return(_notNull);
}
throw new NotSupportedException();
}
private IPhpValue _Nullable()
{
var s = _src.Member.Name;
switch (s)
{
case "Value":
{
var targetObject = _ctx.TranslateValue(_src.TargetObject);
return(targetObject);
}
case "HasValue":
{
var targetObject = _ctx.TranslateValue(_src.TargetObject);
var isNull = new PhpMethodCallExpression("is_null", targetObject);
var notNull = new PhpUnaryOperatorExpression(isNull, "!");
return(notNull);
}
}
throw new NotSupportedException();
}
protected override IPhpValue VisitPhpUnaryOperatorExpression(PhpUnaryOperatorExpression node)
{
if (node.Operator == "!" && node.Operand is PhpBinaryOperatorExpression)
{
var bin = node.Operand as PhpBinaryOperatorExpression;
if (bin.Operator == "!==")
{
var bin2 = new PhpBinaryOperatorExpression("===", bin.Left, bin.Right);
return(bin2);
}
var be = new PhpParenthesizedExpression(node.Operand);
node = new PhpUnaryOperatorExpression(be, node.Operator);
return(node);
}
if (node.Operator == "!" && node.Operand is PhpUnaryOperatorExpression)
{
var bin = node.Operand as PhpUnaryOperatorExpression;
if (bin.Operator == "!")
{
return(Simplify(bin.Operand));
}
}
return(node);
}
