protected ObjectDef EmitUnaryExpression(CParser.UnaryExpressionContext unaryExpression)
{
ObjectDef returnObjectDef = null;
if (unaryExpression.postfixExpression() != null)
{
returnObjectDef = EmitPostfixExpression(unaryExpression.postfixExpression());
}
else
{
returnObjectDef = null; // Skip unary expressions
}
return(returnObjectDef);
}
public override void ExitUnaryExpression(CParser.UnaryExpressionContext context)
{
if (context.unaryOperator() != null)
{
// unaryOperator castExpression
/*
* unaryOperator
* : '&' | '*' | '+' | '-' | '~' | '!'
* ;
*/
string operation = context.unaryOperator().GetText();
if (operation == "&")
{
SafeCall(context, CExpression.AddressOfOperator);
}
else if (operation == "*")
{
SafeCall(context, CExpression.DereferenceOperator);
}
else if (operation == "+")
{
SafeCall(context, CExpression.UnaryPlusOperator);
}
else if (operation == "-")
{
SafeCall(context, CExpression.UnaryMinusOperator);
}
else if (operation == "~")
{
SafeCall(context, CExpression.BitwiseNotOperator);
}
else if (operation == "!")
{
SafeCall(context, CExpression.LogicalNotOperator);
}
}
else if (context.GetText().StartsWith("++"))
{
//'++' unaryExpression
SafeCall(context, CExpression.PrefixIncrementOperator);
}
else if (context.GetText().StartsWith("--"))
{
//'--' unaryExpression
SafeCall(context, CExpression.PrefixDecrementOperator);
}
else if (context.GetText().StartsWith("sizeof"))
{
if (context.unaryExpression() != null)
{
//'sizeof' unaryExpression
SafeCall(context, CExpression.SizeOf);
}
else
{
//'sizeof' '(' typeName ')'
SafeCall(context, () => CExpression.SizeOf(context.typeName().GetText()));
}
}
else if (context.Identifier() != null)
{
//'&&' Identifier
SematicError(context, "GCC extension && not supported");
}
else if (context.GetText().StartsWith("_Alignof"))
{
//'_Alignof' '(' typeName ')'
SematicError(context, "alignof not supported");
}
}
