public VariableScope(LocalVariable variable, int start, VariableScope parent)
{
Variable = variable;
Start = start;
Parent = parent;
}
internal LocalVariable AddClosureVariable(ParameterExpression variable)
{
if (_closureVariables == null)
{
_closureVariables = new Dictionary<ParameterExpression, LocalVariable>();
}
LocalVariable result = new LocalVariable(_closureVariables.Count, true, false);
_closureVariables.Add(variable, result);
return result;
}
public bool TryGetLocalOrClosure(ParameterExpression var, out LocalVariable local)
{
VariableScope scope;
if (_variables.TryGetValue(var, out scope))
{
local = scope.Variable;
return true;
}
if (_closureVariables != null && _closureVariables.TryGetValue(var, out local))
{
return true;
}
local = null;
return false;
}
public LocalDefinition DefineLocal(ParameterExpression variable, int start)
{
LocalVariable result = new LocalVariable(_localCount++, false, false);
_maxLocalCount = System.Math.Max(_localCount, _maxLocalCount);
VariableScope existing, newScope;
if (_variables.TryGetValue(variable, out existing))
{
newScope = new VariableScope(result, start, existing);
if (existing.ChildScopes == null)
{
existing.ChildScopes = new List<VariableScope>();
}
existing.ChildScopes.Add(newScope);
}
else
{
newScope = new VariableScope(result, start, null);
}
_variables[variable] = newScope;
return new LocalDefinition(result.Index, variable);
}
public VariableScope(LocalVariable variable, int start, VariableScope?parent)
{
Variable = variable;
Start = start;
Parent = parent;
}
public ParameterByRefUpdater(LocalVariable parameter, int argumentIndex)
: base(argumentIndex)
{
_parameter = parameter;
}