/// <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));
}
/// <summary>
/// Creates an entry method, that is used to execute query for normal modules
/// or that can be used as a base for a query for query modules.
/// </summary>
protected void GenerateMethod(
Module module, IEnumerable <Parameter> methodParameters, string resultClassName,
FieldDeclarationSyntax propsField, string fileName, bool nullableParameters, SortType?sortType)
{
var propertiesField = CreatePropertiesField(module, resultClassName, propsField, sortType);
ExpressionSyntax queryParameters = SyntaxEx.Invocation(
SyntaxEx.MemberAccess("QueryParameters", SyntaxEx.GenericName("Create", resultClassName)));
var queryParametersLocal = SyntaxEx.LocalDeclaration("var", "queryParameters", queryParameters);
var documentationElements = new List <XmlElementSyntax>();
var summary = SyntaxEx.DocumentationSummary(module.Description);
documentationElements.Add(summary);
var parameters = new List <ParameterSyntax>();
IList <StatementSyntax> statements = new List <StatementSyntax>();
statements.Add(queryParametersLocal);
methodParameters = methodParameters
.Where(p => !p.Deprecated)
.Where(p => p.Name != "continue")
.OrderByDescending(p => p.Required);
foreach (var methodParameter in methodParameters)
{
var nullable = nullableParameters && !methodParameter.Required;
var typeName = Wiki.TypeManager.GetTypeName(methodParameter, ClassNameBase, nullable, false);
var parameterName = GetPropertyName(methodParameter.Name);
// this type cannot be processed
if (typeName == null)
{
continue;
}
var parameter = SyntaxEx.Parameter(typeName, parameterName, nullable ? SyntaxEx.NullLiteral() : null);
parameters.Add(parameter);
ExpressionSyntax valueExpression = (NamedNode)parameter;
if (nullable && typeName.EndsWith("?"))
{
valueExpression = SyntaxEx.MemberAccess(valueExpression, "Value");
}
ExpressionSyntax newQueryParameters;
if (typeName == "System.IO.Stream")
{
newQueryParameters = SyntaxEx.Invocation(
SyntaxEx.MemberAccess(queryParametersLocal, "AddFile"),
SyntaxEx.Literal(methodParameter.Name),
valueExpression);
}
else
{
newQueryParameters = SyntaxEx.Invocation(
SyntaxEx.MemberAccess(queryParametersLocal, "AddSingleValue"),
SyntaxEx.Literal(methodParameter.Name),
SyntaxEx.Invocation(SyntaxEx.MemberAccess(valueExpression, "ToQueryString")));
}
var queryParametersAssignment = SyntaxEx.Assignment(queryParametersLocal, newQueryParameters);
if (nullable)
{
var assignmentWithCheck = SyntaxEx.If(
SyntaxEx.NotEquals((NamedNode)parameter, SyntaxEx.NullLiteral()), queryParametersAssignment);
statements.Add(assignmentWithCheck);
}
else
{
statements.Add(queryParametersAssignment);
}
var parameterDocumentation = SyntaxEx.DocumentationParameter(parameterName, methodParameter.Description);
documentationElements.Add(parameterDocumentation);
}
statements = GenerateMethodBody(
SyntaxEx.ObjectCreation(
SyntaxEx.GenericName("QueryProcessor", resultClassName),
SyntaxFactory.IdentifierName("m_wiki"),
(NamedNode)propertiesField), (NamedNode)queryParametersLocal, statements);
var modifiers = new List <SyntaxKind> {
SyntaxKind.PublicKeyword
};
if (statements == null)
{
modifiers.Add(SyntaxKind.AbstractKeyword);
}
var method = SyntaxEx.MethodDeclaration(
modifiers, GenerateMethodResultType(), ClassNameBase, parameters, statements)
.WithLeadingTrivia(SyntaxFactory.Trivia(SyntaxEx.DocumentationComment(documentationElements)));
AddMembersToClass(fileName, propertiesField, method);
}