/// <summary>
/// Returns an expression that converts to a <see cref="SimpleParameterType"/>,
/// using <see cref="LinqToWiki.Internals.ValueParser"/>.
/// </summary>
private static ExpressionSyntax CreateSimpleConverter(
SimpleParameterType simpleType, string propertyName, ExpressionSyntax value, ExpressionSyntax wiki)
{
if (simpleType.Name == "namespace")
{
return(SyntaxEx.Invocation(SyntaxEx.MemberAccess("ValueParser", "ParseNamespace"), value, wiki));
}
string typeName;
switch (simpleType.Name)
{
case "string":
case "user":
typeName = "String";
break;
case "timestamp":
typeName = "DateTime";
break;
case "boolean":
typeName = "Boolean";
break;
case "integer":
typeName = propertyName.EndsWith("id") ? "Int64" : "Int32";
break;
default:
throw new InvalidOperationException(string.Format("Unknown type {0}", simpleType.Name));
}
return(SyntaxEx.Invocation(SyntaxEx.MemberAccess("ValueParser", "Parse" + typeName), value));
}
/// <summary>
/// Creates file that holds all enums.
/// </summary>
private void CreateEnumsFile()
{
Files.Add(
Names.Enums,
SyntaxEx.CompilationUnit(
SyntaxEx.NamespaceDeclaration(Namespace), "LinqToWiki.Internals"));
}
/// <summary>
/// Creates the <c>Wiki</c> class, that is used as an entry point for the whole API.
/// It can be used to access non-query modules directly and non-prop query mdoules
/// indirectly though its <c>Query</c> property.
/// </summary>
private void CreateWikiClass(string baseUri, string apiPath)
{
var wikiField = SyntaxEx.FieldDeclaration(
new[] { SyntaxKind.PrivateKeyword, SyntaxKind.ReadOnlyKeyword }, Names.WikiInfo, "m_wiki");
var queryProperty = SyntaxEx.AutoPropertyDeclaration(
new[] { SyntaxKind.PublicKeyword }, Names.QueryAction, "Query", SyntaxKind.PrivateKeyword);
var pagesSourcePageSizePropertyName = "PagesSourcePageSize";
var wikiFieldPagesSourcePageSizeProperty = SyntaxEx.MemberAccess(wikiField, pagesSourcePageSizePropertyName);
var pagesSourcePageSizeProperty = SyntaxEx.PropertyDeclaration(
new[] { SyntaxKind.PublicKeyword }, SyntaxFactory.ParseTypeName("int"), pagesSourcePageSizePropertyName,
getStatements: new[] { SyntaxEx.Return(wikiFieldPagesSourcePageSizeProperty) },
setStatements:
new[] { SyntaxEx.Assignment(wikiFieldPagesSourcePageSizeProperty, SyntaxFactory.IdentifierName("value")) });
var userAgentParameter = SyntaxEx.Parameter("string", "userAgent");
var baseUriParameter = SyntaxEx.Parameter("string", "baseUri", SyntaxEx.NullLiteral());
var apiPathParameter = SyntaxEx.Parameter("string", "apiPath", SyntaxEx.NullLiteral());
var wikiAssignment = SyntaxEx.Assignment(
wikiField,
SyntaxEx.ObjectCreation(
Names.WikiInfo,
(NamedNode)userAgentParameter,
SyntaxEx.Coalesce((NamedNode)baseUriParameter, SyntaxEx.Literal(baseUri)),
SyntaxEx.Coalesce((NamedNode)apiPathParameter, SyntaxEx.Literal(apiPath))));
var queryAssignment = SyntaxEx.Assignment(
queryProperty, SyntaxEx.ObjectCreation(Names.QueryAction, (NamedNode)wikiField));
var ctor = SyntaxEx.ConstructorDeclaration(
new[] { SyntaxKind.PublicKeyword }, Names.Wiki,
new[] { userAgentParameter, baseUriParameter, apiPathParameter },
new StatementSyntax[] { wikiAssignment, queryAssignment });
var members = new List <MemberDeclarationSyntax>
{
wikiField,
queryProperty,
pagesSourcePageSizeProperty,
ctor
};
members.AddRange(CreatePageSourceMethods(wikiField));
var wikiClass = SyntaxEx.ClassDeclaration(Names.Wiki, members);
Files.Add(
Names.Wiki,
SyntaxEx.CompilationUnit(
SyntaxEx.NamespaceDeclaration(Namespace, wikiClass),
"System", "System.Collections.Generic", "LinqToWiki", "LinqToWiki.Collections",
"LinqToWiki.Internals", "LinqToWiki.Parameters", EntitiesNamespace));
}
/// <summary>
/// Creates the <c>Page</c> class that used to access prop query modules.
/// </summary>
private void CreatePageClass()
{
var pageClass = SyntaxEx.ClassDeclaration(SyntaxKind.AbstractKeyword, Names.Page)
.AddPrivateConstructor();
Files.Add(
Names.Page,
SyntaxEx.CompilationUnit(
SyntaxEx.NamespaceDeclaration(Namespace, pageClass),
"System", "System.Collections.Generic", "LinqToWiki", "LinqToWiki.Collections",
"LinqToWiki.Internals", EntitiesNamespace));
}
/// <summary>
/// Creates the <c>PageResult</c> class that can be used as a named (non-anonymous) type
/// for the result of PageSource queries.
/// </summary>
private void CreatePageResultClass()
{
var infoResultClassName = Files["info"].SingleDescendant <ClassDeclarationSyntax>().Identifier.ValueText;
var typeParameterName = "TData";
var dataPropertyType = SyntaxEx.GenericName("IEnumerable", typeParameterName);
var infoProperty = SyntaxEx.AutoPropertyDeclaration(
new[] { SyntaxKind.PublicKeyword }, infoResultClassName, "Info", SyntaxKind.PrivateKeyword);
var dataProperty = SyntaxEx.AutoPropertyDeclaration(
new[] { SyntaxKind.PublicKeyword }, dataPropertyType, "Data", SyntaxKind.PrivateKeyword);
var infoParameter = SyntaxEx.Parameter(infoResultClassName, "info");
var dataParameter = SyntaxEx.Parameter(dataPropertyType, "data");
var ctorBody =
new StatementSyntax[]
{
SyntaxEx.Assignment(infoProperty, infoParameter),
SyntaxEx.Assignment(dataProperty, dataParameter)
};
var ctor = SyntaxEx.ConstructorDeclaration(
new[] { SyntaxKind.PublicKeyword }, Names.PageResult, new[] { infoParameter, dataParameter }, ctorBody);
var pageResultClass = SyntaxEx.ClassDeclaration(
Names.PageResult, new[] { SyntaxEx.TypeParameter(typeParameterName) }, null,
new MemberDeclarationSyntax[] { infoProperty, dataProperty, ctor });
var pageResultType = SyntaxEx.GenericName(Names.PageResult, typeParameterName);
var createMethodBody = SyntaxEx.Return(
SyntaxEx.ObjectCreation(pageResultType, (NamedNode)infoParameter, (NamedNode)dataParameter));
var createMethod = SyntaxEx.MethodDeclaration(
new[] { SyntaxKind.PublicKeyword, SyntaxKind.StaticKeyword }, pageResultType, "Create",
new[] { SyntaxEx.TypeParameter(typeParameterName) }, new[] { infoParameter, dataParameter },
createMethodBody);
var pageResultHelperClass = SyntaxEx.ClassDeclaration(SyntaxKind.StaticKeyword, Names.PageResult, createMethod);
Files.Add(
Names.PageResult,
SyntaxEx.CompilationUnit(
SyntaxEx.NamespaceDeclaration(Namespace, pageResultClass, pageResultHelperClass),
"System.Collections.Generic", EntitiesNamespace));
}
/// <summary>
/// Creates the <c>QueryAction</c> class that is used to access non-prop query modules.
/// </summary>
private void CreateQueryActionClass()
{
var wikiField = SyntaxEx.FieldDeclaration(
new[] { SyntaxKind.PrivateKeyword, SyntaxKind.ReadOnlyKeyword }, Names.WikiInfo, "m_wiki");
var wikiParameter = SyntaxEx.Parameter(Names.WikiInfo, "wiki");
var ctor = SyntaxEx.ConstructorDeclaration(
new[] { SyntaxKind.InternalKeyword }, Names.QueryAction,
new[] { wikiParameter },
new StatementSyntax[] { SyntaxEx.Assignment(wikiField, wikiParameter) });
var queryActionClass = SyntaxEx.ClassDeclaration(Names.QueryAction, wikiField, ctor);
Files.Add(
Names.QueryAction, SyntaxEx.CompilationUnit(
SyntaxEx.NamespaceDeclaration(Namespace, queryActionClass),
"System", "System.Collections.Generic", "LinqToWiki", "LinqToWiki.Collections",
"LinqToWiki.Parameters", "LinqToWiki.Internals", EntitiesNamespace));
}
/// <summary>
/// Creates methods to create <see cref="ListSourceBase{TPage}"/> page sources
/// for the <c>Wiki</c> class.
/// </summary>
private static IEnumerable <MethodDeclarationSyntax> CreatePageSourceMethods(FieldDeclarationSyntax wikiField)
{
var pageSources =
new[]
{
new { type = "string", name = "titles", sourceType = typeof(TitlesSource <>) },
new { type = "long", name = "pageIds", sourceType = typeof(PageIdsSource <>) },
new { type = "long", name = "revIds", sourceType = typeof(RevIdsSource <>) }
};
foreach (var pageSource in pageSources)
{
string sourceTypeName = pageSource.sourceType.Name;
sourceTypeName = sourceTypeName.Substring(0, sourceTypeName.IndexOf('`'));
var parameterVersions =
new[]
{
SyntaxEx.Parameter(SyntaxEx.GenericName("IEnumerable", pageSource.type), pageSource.name),
SyntaxEx.Parameter(
pageSource.type + "[]", pageSource.name, modifiers: new[] { SyntaxKind.ParamsKeyword })
};
foreach (var parameter in parameterVersions)
{
var returnStatement = SyntaxEx.Return(
SyntaxEx.ObjectCreation(
SyntaxEx.GenericName(sourceTypeName, Names.Page),
(NamedNode)wikiField, (NamedNode)parameter));
yield return(SyntaxEx.MethodDeclaration(
new[] { SyntaxKind.PublicKeyword }, SyntaxEx.GenericName("PagesSource", Names.Page),
"Create" + sourceTypeName, new[] { parameter }, returnStatement));
}
}
}
/// <summary>
/// Returns the given class with a private parameterless constructor added.
/// </summary>
public static ClassDeclarationSyntax AddPrivateConstructor(this ClassDeclarationSyntax classDeclaration)
{
return(classDeclaration.AddMembers(
SyntaxEx.ConstructorDeclaration(
new[] { SyntaxKind.PrivateKeyword }, classDeclaration.Identifier.ValueText)));
}
public static TNode WithDocumentationSummary <TNode>(this TNode node, string summary) where TNode : SyntaxNode
{
return(node.WithLeadingTrivia(Syntax.Trivia(SyntaxEx.DocumentationComment(SyntaxEx.DocumentationSummary(summary)))));
}
/// <summary>
/// Returns an expression that converts to an <see cref="EnumParameterType"/>.
/// </summary>
private ExpressionSyntax CreateEnumConverter(EnumParameterType type, string moduleName, ExpressionSyntax value)
{
var typeName = m_enumTypeNames[moduleName, type];
return(SyntaxEx.ObjectCreation(typeName, value));
}
/// <summary>
/// Creates a type representing the given <see cref="EnumParameterType"/>.
/// </summary>
private string GenerateType(EnumParameterType enumType, string propertyName, string moduleName)
{
string typeName = moduleName + propertyName;
Dictionary <EnumParameterType, string> moduleTypes;
if (m_enumTypeNames.TryGetValue(moduleName, out moduleTypes))
{
int i = 2;
while (moduleTypes.Values.Contains(typeName))
{
typeName = moduleName + propertyName + i++;
}
}
var fixedMemberNameMapping = new TupleList <string, string>();
var memberNames = new List <string>();
foreach (var name in enumType.Values)
{
var fixedName = FixEnumMemberName(name);
if (name != fixedName.TrimStart('@'))
{
fixedMemberNameMapping.Add(fixedName, name);
}
memberNames.Add(fixedName);
}
var members = enumType.Values.Select(
memberName =>
SyntaxEx.FieldDeclaration(
new[] { SyntaxKind.PublicKeyword, SyntaxKind.StaticKeyword, SyntaxKind.ReadOnlyKeyword },
typeName, FixEnumMemberName(memberName),
SyntaxEx.ObjectCreation(typeName, SyntaxEx.Literal(memberName))));
var constructorParameter = SyntaxEx.Parameter("string", "value");
var contructor = SyntaxEx.ConstructorDeclaration(
new[] { SyntaxKind.InternalKeyword }, typeName, new[] { constructorParameter },
constructorInitializer: SyntaxEx.BaseConstructorInitializer((NamedNode)constructorParameter));
var firstParameter = SyntaxEx.Parameter(typeName, "first");
var secondParameter = SyntaxEx.Parameter(typeName, "second");
Func <SyntaxKind, ExpressionSyntax, OperatorDeclarationSyntax> createOperator =
(op, result) => SyntaxEx.OperatorDeclaration(
Syntax.ParseTypeName("bool"), op,
new[] { firstParameter, secondParameter },
new[] { SyntaxEx.Return(result) });
var equalsExpression = SyntaxEx.Invocation(
Syntax.IdentifierName("Equals"), (NamedNode)firstParameter, (NamedNode)secondParameter);
var notEqualsExpression = SyntaxEx.Not(equalsExpression);
var equalsOperator = createOperator(SyntaxKind.EqualsEqualsToken, equalsExpression);
var notEqualsOPerator = createOperator(SyntaxKind.ExclamationEqualsToken, notEqualsExpression);
var equalsParameter = SyntaxEx.Parameter("object", "obj");
var equalsMethod = SyntaxEx.MethodDeclaration(
new[] { SyntaxKind.PublicKeyword, SyntaxKind.OverrideKeyword }, "bool", "Equals",
new[] { equalsParameter },
SyntaxEx.Return(
SyntaxEx.Invocation(SyntaxEx.MemberAccess("base", "Equals"), (NamedNode)equalsParameter)));
var getHashCodeMethod = SyntaxEx.MethodDeclaration(
new[] { SyntaxKind.PublicKeyword, SyntaxKind.OverrideKeyword }, "int", "GetHashCode",
new ParameterSyntax[0],
SyntaxEx.Return(SyntaxEx.Invocation(SyntaxEx.MemberAccess("base", "GetHashCode"))));
var classDeclaration =
SyntaxEx.ClassDeclaration(typeName, Syntax.ParseTypeName("StringValue"), contructor)
.AddMembers(equalsOperator, notEqualsOPerator, equalsMethod, getHashCodeMethod)
.AddMembers(members.ToArray <MemberDeclarationSyntax>());
var namespaceDeclaration = m_wiki.Files[Wiki.Names.Enums].SingleDescendant <NamespaceDeclarationSyntax>();
m_wiki.Files[Wiki.Names.Enums] = m_wiki.Files[Wiki.Names.Enums].ReplaceNode(
namespaceDeclaration, namespaceDeclaration.AddMembers(classDeclaration));
m_enumTypeNames.Add(moduleName, enumType, typeName);
return(typeName);
}