/// <summary>
/// Creates a method that parses an XML element returned from the API by setting creating an instance
/// of the given class and setting its properties.
/// </summary>
private MethodDeclarationSyntax GenerateParseMethod(string className, IEnumerable <Property> properties)
{
var elementParameter = SyntaxEx.Parameter("XElement", "element");
var wikiParameter = SyntaxEx.Parameter("WikiInfo", "wiki");
var statements = new List <StatementSyntax>();
var resultLocal = SyntaxEx.LocalDeclaration("var", "result", SyntaxEx.ObjectCreation(className));
statements.Add(resultLocal);
foreach (var property in properties)
{
ExpressionSyntax propertyValueAccess;
bool checkForNull;
if (property.Name == "*")
{
propertyValueAccess = (NamedNode)elementParameter;
checkForNull = false;
}
else
{
propertyValueAccess = SyntaxEx.Invocation(
SyntaxEx.MemberAccess(elementParameter, "Attribute"), SyntaxEx.Literal(property.Name));
checkForNull = true;
}
var propertyValueLocal = SyntaxEx.LocalDeclaration(
"var", GetPropertyName(property.Name, false) + "Value", propertyValueAccess);
statements.Add(propertyValueLocal);
var valueValue = SyntaxEx.MemberAccess(propertyValueLocal, "Value");
var assignment = SyntaxEx.Assignment(
SyntaxEx.MemberAccess(resultLocal, GetPropertyName(property.Name)),
Wiki.TypeManager.CreateConverter(
property, ClassNameBase, valueValue,
(NamedNode)wikiParameter));
if (checkForNull)
{
ExpressionSyntax condition = SyntaxEx.NotEquals((NamedNode)propertyValueLocal, SyntaxEx.NullLiteral());
var simpleType = property.Type as SimpleParameterType;
if (simpleType == null || (simpleType.Name != "string" && simpleType.Name != "boolean"))
{
condition = SyntaxEx.And(
condition, SyntaxEx.NotEquals(valueValue, SyntaxEx.Literal("")));
}
var ifStatement = SyntaxEx.If(condition, assignment);
statements.Add(ifStatement);
}
else
{
statements.Add(assignment);
}
}
statements.Add(SyntaxEx.Return(resultLocal));
return(SyntaxEx.MethodDeclaration(
new[] { SyntaxKind.PublicKeyword, SyntaxKind.StaticKeyword }, className, "Parse",
new[] { elementParameter, wikiParameter }, statements));
}