/// <summary>
/// Processes the child of the current reader position into a child of this object.
/// </summary>
/// <param name="reader">The XML reader</param>
protected override void ReadXmlChild(XmlReader reader) {
if(XmlParameterName == reader.Name) {
Parameter = XmlSerialization.ReadChildExpression(reader) as VariableDeclaration;
} else {
base.ReadXmlChild(reader);
}
}
/// <summary>
/// constructor
/// </summary>
/// <param name="vd"></param>
public VariableInfo(VariableDeclaration vd)
{
IsReturned = false;
IsModified = false;
AssignedFields = new HashSet<VariableDeclaration>();
this.Variable = vd;
if(vd.Initializer != null) {
Initialized = true;
}
}
//This method is used to find all the statement related the the statement "declcont".
public void FindRelated(MethodDefinition m, VariableDeclaration declcont, List<string[]> variables)
{
foreach (var stat in m.GetDescendants<Statement>())
{
if (stat is DeclarationStatement || stat is SwitchStatement || stat is ABB.SrcML.Data.ThrowStatement || stat is ABB.SrcML.Data.ReturnStatement) continue;
if (stat.Content == null) continue;
IEnumerable<Expression> exps = stat.Content.GetDescendants();
if (exps.Count<Expression>() <= 1) continue;
var firstexp = exps.First<Expression>();
if ((firstexp.ToString() != declcont.Name) || !(firstexp is NameUse)) continue;
if (!(exps.ElementAt(1) is OperatorUse)) continue;
OperatorUse opt = (OperatorUse)exps.ElementAt(1);
string targetstring = Rebuildstring(declcont.Name, stat, variables);
if (opt.Text == "+=") { UpdateVariable(declcont.Name, variables, GetVariableCont(declcont.Name, variables) + targetstring); }
if (opt.Text == "=") { UpdateVariable(declcont.Name, variables, targetstring); }
}
}
/// <summary>
/// Print VariableDeclaration information. (For testing purpose)
/// </summary>
/// <param name="vd"></param>
/// <returns></returns>
public static string GetVariableDeclarationInfo(VariableDeclaration vd)
{
string info = vd.Name + "<" + vd.VariableType + ">";
return info;
}
/// <summary>
/// Creates variable declaration objects from the given declaration element
/// </summary>
/// <param name="declarationElement">The variable declaration to parse. Must belong to <see cref="VariableDeclarationElementNames"/></param>
/// <param name="context">The parser context</param>
/// <returns>One variable declaration object for each declaration in <paramref name="declarationElement"/></returns>
public virtual IEnumerable<VariableDeclaration> ParseDeclarationElement(XElement declarationElement, ParserContext context) {
if(declarationElement == null) throw new ArgumentNullException("declaration");
if(!VariableDeclarationElementNames.Contains(declarationElement.Name)) throw new ArgumentException("XElement.Name must be in VariableDeclarationElementNames");
XElement declElement;
if(declarationElement.Name == SRC.Declaration || declarationElement.Name == SRC.FunctionDeclaration) {
declElement = declarationElement;
} else {
declElement = declarationElement.Element(SRC.Declaration);
}
var typeElement = declElement.Element(SRC.Type);
var declarationType = ParseTypeUseElement(typeElement, context);
foreach(var nameElement in declElement.Elements(SRC.Name)) {
var variableDeclaration = new VariableDeclaration() {
VariableType = declarationType,
Name = nameElement.Value,
Location = context.CreateLocation(nameElement),
Scope = context.CurrentScope,
};
yield return variableDeclaration;
}
}
