QilNode IXPathEnvironment.ResolveVariable(string prefix, string name) { if (!_allowVariables) { throw new XslLoadException(SR.Xslt_VariablesNotAllowed); } string ns = ResolvePrefixThrow(/*ignoreDefaultNs:*/ true, prefix); Debug.Assert(ns != null); // Look up in params and variables of the current scope and all outer ones QilNode?var = _scope.LookupVariable(name, ns); if (var == null) { throw new XslLoadException(SR.Xslt_InvalidVariable, Compiler.ConstructQName(prefix, name)); } // All Node* parameters are guaranteed to be in document order with no duplicates, so TypeAssert // this so that optimizer can use this information to avoid redundant sorts and duplicate removal. XmlQueryType varType = var.XmlType !; if (var.NodeType == QilNodeType.Parameter && varType.IsNode && varType.IsNotRtf && varType.MaybeMany && !varType.IsDod) { var = _f.TypeAssert(var, XmlQueryTypeFactory.NodeSDod); } return(var); }
QilNode IXPathEnvironment.ResolveFunction(string prefix, string name, IList <QilNode> args, IFocus env) { Debug.Assert(!args.IsReadOnly, "Writable collection expected"); if (prefix.Length == 0) { FunctionInfo?func; if (FunctionTable.TryGetValue(name, out func)) { func.CastArguments(args, name, _f); switch (func.id) { case FuncId.Current: if (!_allowCurrent) { throw new XslLoadException(SR.Xslt_CurrentNotAllowed); } // NOTE: This is the only place where the current node (and not the context node) must be used return(((IXPathEnvironment)this).GetCurrent() !); case FuncId.Key: if (!_allowKey) { throw new XslLoadException(SR.Xslt_KeyNotAllowed); } return(CompileFnKey(args[0], args[1], env)); case FuncId.Document: return(CompileFnDocument(args[0], args.Count > 1 ? args[1] : null)); case FuncId.FormatNumber: return(CompileFormatNumber(args[0], args[1], args.Count > 2 ? args[2] : null)); case FuncId.UnparsedEntityUri: return(CompileUnparsedEntityUri(args[0])); case FuncId.GenerateId: return(CompileGenerateId(args.Count > 0 ? args[0] : env.GetCurrent() !)); case FuncId.SystemProperty: return(CompileSystemProperty(args[0])); case FuncId.ElementAvailable: return(CompileElementAvailable(args[0])); case FuncId.FunctionAvailable: return(CompileFunctionAvailable(args[0])); default: Debug.Fail($"{func.id} is present in the function table, but absent from the switch"); return(null); } } else { throw new XslLoadException(SR.Xslt_UnknownXsltFunction, Compiler.ConstructQName(prefix, name)); } } else { string ns = ResolvePrefixThrow(/*ignoreDefaultNs:*/ true, prefix); Debug.Assert(ns != null); if (ns == XmlReservedNs.NsMsxsl) { if (name == "node-set") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(CompileMsNodeSet(args[0])); } else if (name == "string-compare") { FunctionInfo.CheckArity(/*minArg:*/ 2, /*maxArg:*/ 4, name, args.Count); return(_f.InvokeMsStringCompare( /*x: */ _f.ConvertToString(args[0]), /*y: */ _f.ConvertToString(args[1]), /*lang: */ 2 < args.Count ? _f.ConvertToString(args[2]) : _f.String(string.Empty), /*options:*/ 3 < args.Count ? _f.ConvertToString(args[3]) : _f.String(string.Empty) )); } else if (name == "utc") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(_f.InvokeMsUtc(/*datetime:*/ _f.ConvertToString(args[0]))); } else if (name == "format-date" || name == "format-time") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 3, name, args.Count); return(_f.InvokeMsFormatDateTime( /*datetime:*/ _f.ConvertToString(args[0]), /*format: */ 1 < args.Count ? _f.ConvertToString(args[1]) : _f.String(string.Empty), /*lang: */ 2 < args.Count ? _f.ConvertToString(args[2]) : _f.String(string.Empty), /*isDate: */ _f.Boolean(name == "format-date") )); } else if (name == "local-name") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(_f.InvokeMsLocalName(_f.ConvertToString(args[0]))); } else if (name == "namespace-uri") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(_f.InvokeMsNamespaceUri(_f.ConvertToString(args[0]), env.GetCurrent() !)); } else if (name == "number") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(_f.InvokeMsNumber(args[0])); } } if (ns == XmlReservedNs.NsExsltCommon) { if (name == "node-set") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(CompileMsNodeSet(args[0])); } else if (name == "object-type") { FunctionInfo.CheckArity(/*minArg:*/ 1, /*maxArg:*/ 1, name, args.Count); return(EXslObjectType(args[0])); } } // NOTE: If you add any function here, add it to IsFunctionAvailable as well // Ensure that all node-set parameters are DocOrderDistinct for (int i = 0; i < args.Count; i++) { args[i] = _f.SafeDocOrderDistinct(args[i]); } if (_compiler.Settings.EnableScript) { XmlExtensionFunction?scrFunc = _compiler.Scripts.ResolveFunction(name, ns, args.Count, (IErrorHelper)this); if (scrFunc != null) { return(GenerateScriptCall(_f.QName(name, ns, prefix), scrFunc, args)); } } else { if (_compiler.Scripts.ScriptClasses.ContainsKey(ns)) { ReportWarning(SR.Xslt_ScriptsProhibited); return(_f.Error(_lastScope !.SourceLine, SR.Xslt_ScriptsProhibited)); } } return(_f.XsltInvokeLateBound(_f.QName(name, ns, prefix), args)); } }