internal XPathFunctionInfo(MethodInfo method, XPathModuleInfo module)
{
if (method == null)
{
throw new ArgumentNullException("method");
}
if (method.ContainsGenericParameters)
{
throw new ArgumentException("Methods that accept type parameters cannot be used as module functions.", "method");
}
if (method.GetParameters().Any(p => p.IsOut))
{
throw new ArgumentException("Methods with out parmeters cannot be used as module functions.", "method");
}
if (module == null)
{
throw new ArgumentNullException("module");
}
this._Method = method;
this._Module = module;
if (this.Module.HasModuleAttribute)
{
this.functionAttr = Attribute.GetCustomAttribute(this.Method, typeof(XPathFunctionAttribute))
as XPathFunctionAttribute;
}
}
internal XPathFunctionInfo(MethodInfo method, XPathModuleInfo module)
{
if (method == null) throw new ArgumentNullException("method");
if (method.ContainsGenericParameters) throw new ArgumentException("Methods that accept type parameters cannot be used as module functions.", "method");
if (method.GetParameters().Any(p => p.IsOut)) throw new ArgumentException("Methods with out parmeters cannot be used as module functions.", "method");
if (module == null) throw new ArgumentNullException("module");
this._Method = method;
this._Module = module;
if (this.Module.HasModuleAttribute) {
this.functionAttr = Attribute.GetCustomAttribute(this.Method, typeof(XPathFunctionAttribute))
as XPathFunctionAttribute;
}
}
static CodeTypeDeclaration GenerateType(XPathModuleInfo module)
{
var type = new CodeTypeDeclaration {
Name = module.Type.FullName.Replace('.', '_') + "_extobj",
IsClass = true,
TypeAttributes = TypeAttributes.Public,
CustomAttributes = {
new CodeAttributeDeclaration(
new CodeTypeReference(typeof(DebuggerNonUserCodeAttribute))
)
}
};
CodeExpression moduleExpr;
if (module.TypeIsStatic) {
moduleExpr = new CodeTypeReferenceExpression(module.Type);
} else {
var moduleField = new CodeMemberField {
Name = "module",
Type = new CodeTypeReference(module.Type),
InitExpression = new CodeObjectCreateExpression(module.Type)
};
type.Members.Add(moduleField);
moduleExpr = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), moduleField.Name);
if (module.Dependencies.Count > 0) {
type.Members.Add(GenerateInitialize(module, moduleExpr));
}
}
foreach (XPathFunctionInfo function in module.Functions) {
type.Members.Add(GenerateFunction(function, moduleExpr));
}
return type;
}
static CodeMemberMethod GenerateInitialize(XPathModuleInfo module, CodeExpression moduleExpr)
{
var initializeMethod = new CodeMemberMethod {
Name = "Initialize",
Attributes = MemberAttributes.Public | MemberAttributes.Final
};
for (int i = 0; i < module.Dependencies.Count; i++) {
XPathDependencyInfo dependency = module.Dependencies[i];
initializeMethod.Parameters.Add(new CodeParameterDeclarationExpression {
Type = new CodeTypeReference(dependency.Type),
Name = "d" + (i + 1).ToStringInvariant()
});
var paramRef = new CodeVariableReferenceExpression(initializeMethod.Parameters[i].Name);
initializeMethod.Statements.Add(new CodeAssignStatement {
Left = new CodePropertyReferenceExpression(moduleExpr, dependency.Property.Name),
Right = paramRef
});
}
return initializeMethod;
}
CodeNamespace GenerateModuleTypes(XPathModuleInfo module, out string[] functionDefTypeNames)
{
var namespaceBuilder = new StringBuilder()
.Append(typeof(IntegratedExtensionFunctionGenerator).Namespace)
.Append(".modules.")
.Append(module.Type.FullName.Replace('.', '_'))
.Append("_functions");
var nspace = new CodeNamespace {
Name = namespaceBuilder.ToString(),
Imports = {
new CodeNamespaceImport(typeof(Enumerable).Namespace),
new CodeNamespaceImport(typeof(SaxonExtensions).Namespace)
}
};
var groupedByName =
from f in module.Functions
group f by f.Name;
var functionDefNames = new List<string>();
foreach (var functions in groupedByName) {
Tuple<CodeTypeDeclaration, CodeTypeDeclaration> funcDefAndCall = GenerateFunctionType(functions.ToArray());
nspace.Types.Add(funcDefAndCall.Item1);
nspace.Types.Add(funcDefAndCall.Item2);
functionDefNames.Add(nspace.Name + "." + funcDefAndCall.Item1.Name);
}
functionDefTypeNames = functionDefNames.ToArray();
return nspace;
}
CodeMemberMethod GenerateInitialize(XPathModuleInfo module, CodeExpression processorRef, CodeExpression staticBaseUriExpr)
{
var initializeMethod = new CodeMemberMethod {
Name = "Initialize",
Attributes = MemberAttributes.Private | MemberAttributes.Final,
Parameters = {
new CodeParameterDeclarationExpression(module.Type, "module")
}
};
for (int i = 0; i < module.Dependencies.Count; i++) {
XPathDependencyInfo dependency = module.Dependencies[i];
CodeExpression expr = null;
if (dependency.Type == typeof(IXsltProcessor)
|| dependency.Type == typeof(IXQueryProcessor)) {
expr = processorRef;
} else if (dependency.Type == typeof(XPathItemFactory)) {
expr = GetItemFactoryReference(processorRef);
} else if (dependency.Type == typeof(XmlResolver)) {
expr = new CodeObjectCreateExpression(typeof(XmlDynamicResolver), staticBaseUriExpr);
}
if (expr != null) {
initializeMethod.Statements.Add(new CodeAssignStatement {
Left = new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression(initializeMethod.Parameters[0].Name),
dependency.Property.Name
),
Right = expr
});
}
}
return initializeMethod;
}
