/// <summary>
/// Attempts to add a variable to the current code block hash, checking
/// that it is a valid movement to make.
/// </summary>
/// <param name="name">The name of the variable to add.</param>
/// <param name="tipo">The type of the variable to add.</param>
/// <param name="isArr">Boolean determining if the variable is an array
/// </param>
/// <param name="sizes">In case of being an array, its size</param>
private void AddVariable(string name, Type tipo, bool isArr, List <int> sizes)
{
if (!_currentScope.ExistsInScope(name))
{
if (isArr)
{
Symbol symbol = new VariableArray(sizes)
{
Name = name,
Type = tipo
};
_currentScope.Add(symbol);
}
else
{
Symbol symbol = new Variable
{
Name = name,
Type = tipo,
Value = ConstantBuilder.DefaultValue(tipo)
};
_currentScope.Add(symbol);
}
}
else
{
SemErr($"El nombre '{name}' ya ha sido declarado en este scope.");
}
}
/// <summary>
/// Pushes the default values into every symbol in its hash.
/// </summary>
public void PushDefaultValues()
{
foreach (var obj in _hash.Values)
{
if (!(obj is DirectValueSymbol))
{
continue;
}
var variable = (DirectValueSymbol)obj;
variable.SaveAndClear(ConstantBuilder.DefaultValue(variable.Type));
}
}
/// <summary>
/// Inicializes a new instance of the <see cref="VariableArray"/> class.
/// </summary>
/// <param name="lengths">The lengths of the array.</param>
public VariableArray(List <int> lengths)
{
Lengths = lengths;
var totalLength = lengths.Aggregate((accum, next) => accum * next);
Variables = new Variable[totalLength];
for (var i = 0; i < totalLength; i++)
{
Variables[i] = new Variable
{
Type = Type,
Value = ConstantBuilder.DefaultValue(Type)
};
}
}
