bool ReadString(char *str, int size)
{
char ch;
if (bufpoint >= bufsize)
{
FillBuf();
}
do // remove non symbolic data
{
if (PopFromBuf(&ch) == false)
{
return false;
}
} while (!IsLiteral(ch));
do
{
if (IsLiteral(ch))
{
*str = ch;
str++;
}
else // packet end
{
*str = 0; // add end of string
return true;
}
} while (PopFromBuf(&ch) == true);
return false;
}
ExpressionNode* Parser::Factors()
{
if(currenttoken->type == Id)
return Variable();
else if(currenttoken->type == OpenParenthesis){
ConsumeToken();
ExpressionNode * value = Expresion();
if(currenttoken->type != CloseParenthesis)
throw invalid_argument("Se esperaba ). Row:"+to_string(currenttoken->row)+"Column:"+to_string(currenttoken->column));
ConsumeToken();
return value;
}
else if(IsLiteral(currenttoken))
{
return Literal();
}
else if(currenttoken->type == Verdadero)
{
ConsumeToken();
return new ConstantBooleanNode(true);
}
else if(currenttoken->type == Falso)
{
ConsumeToken();
return new ConstantBooleanNode(false);
}
}
vector<CasoLineNode*> Parser::CasoListPrime()
{
if(IsLiteral(currenttoken))
{
return CasoList();
}
else
{
vector<CasoLineNode*> cases;
return cases;
}
}
// { dg-options -std=c++11 }
struct IsLiteral {};
constexpr auto ab = IsLiteral();
constexpr IsLiteral bar(IsLiteral x) { return x; }
constexpr auto xy = bar(ab);