public override void ExitPostfixExpression(CParser.PostfixExpressionContext context)
{
if (context.expression() != null)
{
//postfixExpression '[' expression ']'
SafeCall(context, CExpression.SubscriptOperator);
}
else if (context.postfixExpression() != null && context.GetText().EndsWith(")"))
{
//postfixExpression '(' argumentExpressionList? ')'
int numArgs = GetArgumentListLength(context.argumentExpressionList());
SafeCall(context, () => CExpression.FunctionCall(numArgs));
}
else if (context.Identifier() != null)
{
int objStringLength = context.postfixExpression().GetText().Length;
int idStringLength = context.Identifier().GetText().Length;
int contextStringSize = context.GetText().Length;
int operationStringSize = contextStringSize - (objStringLength + idStringLength);
string idString = context.Identifier().GetText();
//'.'
if (operationStringSize == 1)
{
//postfixExpression '.' Identifier
SafeCall(context, () => CExpression.MemberAccess(idString));
}
//'->'
else
{
//postfixExpression '->' Identifier
SafeCall(context, () => CExpression.MemberAccessThroughPointer(idString));
}
}
else if (context.GetText().EndsWith("++"))
{
//postfixExpression '++'
SafeCall(context, CExpression.PostfixIncrementOperator);
}
else if (context.GetText().EndsWith("--"))
{
//postfixExpression '--'
SafeCall(context, CExpression.PostfixDecrementOperator);
}
else if (context.initializerList() != null)
{
/*
* '(' typeName ')' '{' initializerList '}'
| '(' typeName ')' '{' initializerList ',' '}'
| '__extension__' '(' typeName ')' '{' initializerList '}'
| '__extension__' '(' typeName ')' '{' initializerList ',' '}'
*/
SematicError(context, "compound literals not supported");
}
}
protected ObjectDef EmitPostfixExpression(CParser.PostfixExpressionContext postfixExpression)
{
ObjectDef returnObjectDef = null;
if (postfixExpression.primaryExpression() != null)
{
returnObjectDef = EmitPrimaryExpression(postfixExpression.primaryExpression());
}
else
{
returnObjectDef = null; // Skip postfix expressions
}
return(returnObjectDef);
}
