/// <summary>
/// Checks variables to look for underscores.
/// </summary>
/// <param name="element">The parent element.</param>
/// <param name="variables">The variables to check.</param>
private void CheckUnderscores(Element element, VariableCollection variables)
{
Param.AssertNotNull(element, "element");
Param.AssertNotNull(variables, "variables");
foreach (IVariable variable in variables)
{
if (variable.VariableName.StartsWith("_", StringComparison.Ordinal) && variable.VariableName != "__arglist")
{
this.AddViolation(element, variable.Location.LineNumber, Rules.FieldNamesMustNotBeginWithUnderscore);
}
}
}
/// <summary>
/// Determines whether a matching local variable is contained in the given variable list.
/// </summary>
/// <param name="variables">The variable list.</param>
/// <param name="word">The variable name to check.</param>
/// <param name="item">The token containing the variable name.</param>
/// <returns>Returns true if there is a matching local variable.</returns>
private static bool ContainsVariable(VariableCollection variables, string word, Token item)
{
Param.AssertNotNull(variables, "variables");
Param.AssertValidString(word, "word");
Param.AssertNotNull(item, "item");
IVariable variable = variables[word];
if (variable != null)
{
// Make sure the variable appears before the word.
if (variable.Location.LineNumber < item.LineNumber)
{
return true;
}
else if (variable.Location.LineNumber == item.LineNumber)
{
if (variable.Location.StartPoint.IndexOnLine <= item.Location.StartPoint.IndexOnLine)
{
return true;
}
}
}
return false;
}
/// <summary>
/// Gets the variables defined by an element with parameters and child statements, such as a method or a constructor.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="parameters">The element's parameters.</param>
/// <returns>Returns the variables.</returns>
internal static VariableCollection GatherVariablesForElementWithParametersAndChildStatements(Element element, IList<Parameter> parameters)
{
Param.AssertNotNull(element, "element");
Param.Ignore(parameters);
var variables = new VariableCollection();
if (parameters != null && parameters.Count > 0)
{
for (int i = 0; i < parameters.Count; ++i)
{
variables.Add(parameters[i]);
}
}
for (VariableDeclarationStatement variableStatement = element.FindFirstChild<VariableDeclarationStatement>();
variableStatement != null;
variableStatement = variableStatement.FindNextSibling<VariableDeclarationStatement>())
{
variables.AddRange(variableStatement.Variables);
}
return variables;
}