/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
object host = hosttoken.Execute(context);
PropertyInfo[] indexer = host.GetType().GetProperties().Where(p => p.GetIndexParameters().Length == parameters.Length).ToArray();
if (indexer.Length == 0)
{
if (parameters.Length == 1)
{
if (host is Array array)
{
return(array.GetValue(Converter.Convert <int>(parameters[0].Execute(context))));
}
if (host is IEnumerable enumerable)
{
return(enumerable.Cast <object>().Skip(Converter.Convert <int>(parameters[0].Execute(context))).First());
}
}
throw new ScriptRuntimeException($"No indexer methods found on {host}", this);
}
object[] parametervalues = parameters.Select(p => p.Execute(context)).ToArray();
Tuple <MethodInfo, int>[] evaluated = indexer.Select(i => MethodOperations.GetMethodMatchValue(i.GetMethod, parametervalues)).Where(e => e.Item2 >= 0).ToArray();
if (evaluated.Length == 0)
{
throw new ScriptRuntimeException($"No index getter found on '{host.GetType().Name}' which matched the specified parameters '{string.Join(", ", parametervalues)}'", this);
}
MethodInfo method = evaluated.OrderBy(m => m.Item2).Select(m => m.Item1).First();
return(MethodOperations.CallMethod(this, host, method, parametervalues, context));
}
/// <inheritdoc />
protected override object AssignToken(IScriptToken token, ScriptContext context)
{
object host = hosttoken.Execute(context);
if (parameters.Length == 1)
{
if (host is Array array)
{
object value = token.Execute(context);
array.SetValue(value, Converter.Convert <int>(parameters[0].Execute(context)));
return(value);
}
}
PropertyInfo[] indexer = host.GetType().GetProperties().Where(p => p.GetIndexParameters().Length == parameters.Length).ToArray();
object[] parametervalues = parameters.Select(p => p.Execute(context)).Concat(new[] { token.Execute(context) }).ToArray();
Tuple <MethodInfo, int>[] evaluated = indexer.Select(i => MethodOperations.GetMethodMatchValue(i.SetMethod, parametervalues)).Where(e => e.Item2 >= 0).OrderBy(m => m.Item2).ToArray();
if (evaluated.Length == 0)
{
throw new ScriptRuntimeException($"No index setter found on '{host.GetType().Name}' which matched the specified parameters '{string.Join(", ", parametervalues)}'", this);
}
return(MethodOperations.CallMethod(this, host, evaluated[0].Item1, parametervalues, context));
}
/// <inheritdoc />
protected override object AssignToken(IScriptToken token, ScriptContext context)
{
object host = hosttoken.Execute(context);
if (host is Dictionary <object, object> dictionary)
{
return(dictionary[Member] = token.Execute(context));
}
string member = membername.ToLower();
PropertyInfo property = host.GetType().GetProperties().FirstOrDefault(p => p.Name.ToLower() == member);
if (property != null)
{
return(SetProperty(host, property, token, context));
}
FieldInfo fieldinfo = host.GetType().GetFields().FirstOrDefault(f => f.Name.ToLower() == member);
if (fieldinfo == null)
{
throw new ScriptRuntimeException($"A member with the name of {membername} was not found in type {host.GetType().Name}", this);
}
return(SetField(host, fieldinfo, token, context));
}
/// <inheritdoc />
public object Execute(ScriptContext context)
{
object result = token.Execute(context);
if (!(result is Task task))
{
throw new ScriptRuntimeException("Only tasks can get awaited", this);
}
if (task.Status == TaskStatus.Created)
{
task.Start();
}
try {
task.Wait();
}
catch (AggregateException e) {
Exception unwrapped = e;
while (unwrapped is AggregateException agg && agg.InnerException != null)
{
unwrapped = agg.InnerException;
}
throw unwrapped;
}
if (!task.GetType().IsGenericType)
{
return(null);
}
return(task.GetType().GetProperty("Result")?.GetValue(task));
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
if (condition.Execute(context).ToBoolean())
{
return(Body.Execute(context));
}
return(Else?.Execute(context));
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
VariableContext loopvariables = new VariableContext(context.Variables);
ScriptContext forcontext = new ScriptContext(loopvariables, context.Arguments, context.CancellationToken);
initializer?.Execute(forcontext);
while (condition.Execute(forcontext).ToBoolean())
{
forcontext.CancellationToken.ThrowIfCancellationRequested();
object value = Body?.Execute(forcontext);
if (value is Return)
{
return(value);
}
if (value is Break breaktoken)
{
int depth = breaktoken.Depth.Execute <int>(forcontext);
if (depth <= 1)
{
return(null);
}
return(new Break(new ScriptValue(depth - 1)));
}
if (value is Continue continuetoken)
{
int depth = continuetoken.Depth.Execute <int>(forcontext);
if (depth <= 1)
{
step?.Execute(forcontext);
continue;
}
return(new Continue(new ScriptValue(depth - 1)));
}
step?.Execute(forcontext);
}
return(null);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
object value = condition.Execute(context);
Case @case = cases.FirstOrDefault(c => c.Matches(value, context));
if (@case == null)
{
return(Default?.Execute(context));
}
return(@case.Execute(context));
}
/// <summary>
/// invokes the method
/// </summary>
/// <param name="arguments">arguments for lamda</param>
/// <returns>execution result</returns>
public object Invoke(params object[] arguments)
{
if (parameters.Length != arguments.Length)
{
throw new ScriptRuntimeException($"Argument count doesn't match up parameter count:\n{string.Join(", ", parameters)}", expression);
}
for (int i = 0; i < parameters.Length; ++i)
{
context.Variables.SetVariable(parameters[i], arguments[i]);
}
return(expression.Execute(context));
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
object host = hosttoken.Execute(context);
if (host is Dictionary <object, object> dictionary)
{
return(dictionary[Member]);
}
string member = membername.ToLower();
PropertyInfo property = host.GetType().GetProperties().FirstOrDefault(p => p.Name.ToLower() == member);
if (property != null)
{
try {
return(property.GetValue(host));
}
catch (Exception e) {
throw new ScriptRuntimeException("Unable to read property", null, e);
}
}
FieldInfo fieldinfo = host.GetType().GetFields().FirstOrDefault(f => f.Name.ToLower() == member);
if (fieldinfo == null)
{
throw new ScriptRuntimeException($"A member with the name of {membername} was not found in type {host.GetType().Name}", this);
}
try {
return(fieldinfo.GetValue(host));
}
catch (Exception e) {
throw new ScriptRuntimeException("Unable to read field", null, e);
}
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
object timeargument = timetoken.Execute(context);
if (timeargument == null)
{
throw new ScriptRuntimeException("Specified waiting time was null", this);
}
if (timeargument is TimeSpan timespan)
{
Thread.Sleep(timespan);
}
else
{
switch (Type.GetTypeCode(timeargument.GetType()))
{
case TypeCode.Byte:
case TypeCode.Char:
case TypeCode.Decimal:
case TypeCode.Double:
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.SByte:
case TypeCode.Single:
case TypeCode.UInt16:
case TypeCode.UInt32:
case TypeCode.UInt64:
Thread.Sleep(Converter.Convert <int>(timeargument));
break;
case TypeCode.String:
if (((string)timeargument).Contains(":"))
{
Thread.Sleep(Converter.Convert <TimeSpan>(timeargument));
}
else
{
Thread.Sleep(Converter.Convert <int>(timeargument));
}
break;
default:
throw new ScriptRuntimeException("argument to wait can not be converted to a valid time", this);
}
}
return(null);
}
object SetField(object host, FieldInfo fieldinfo, IScriptToken valuetoken, ScriptContext context)
{
object targetvalue = Converter.Convert(valuetoken.Execute(context), fieldinfo.FieldType);
try
{
fieldinfo.SetValue(host, targetvalue);
}
catch (Exception e)
{
throw new ScriptRuntimeException("Unable to set field", null, e);
}
return(targetvalue);
}
object SetProperty(object host, PropertyInfo property, IScriptToken valuetoken, ScriptContext context)
{
object targetvalue = Converter.Convert(valuetoken.Execute(context), property.PropertyType);
try
{
property.SetValue(host, targetvalue, null);
}
catch (Exception e)
{
throw new ScriptRuntimeException("Unable to set property", null, e);
}
return(targetvalue);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
ScriptContext loopcontext = new ScriptContext(new VariableContext(context.Variables), context.Arguments, context.CancellationToken);
object collectionvalue = collection.Execute(loopcontext);
if (collectionvalue is IEnumerable enumeration)
{
foreach (object value in enumeration.Cast <object>())
{
context.CancellationToken.ThrowIfCancellationRequested();
variable.Assign(new ScriptValue(value), loopcontext);
object bodyvalue = Body?.Execute(loopcontext);
if (bodyvalue is Return)
{
return(bodyvalue);
}
if (bodyvalue is Break breaktoken)
{
int depth = breaktoken.Depth.Execute <int>(loopcontext);
if (depth <= 1)
{
return(null);
}
return(new Break(new ScriptValue(depth - 1)));
}
if (value is Continue continuetoken)
{
int depth = continuetoken.Depth.Execute <int>(loopcontext);
if (depth <= 1)
{
continue;
}
return(new Continue(new ScriptValue(depth - 1)));
}
}
}
else
{
throw new ScriptRuntimeException("Foreach value is not a collection", collection);
}
return(null);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
string typename = TargetType.Execute(context)?.ToString();
if (typename == null)
{
throw new ScriptRuntimeException("cannot cast to null", this);
}
Type type = TypeProvider.DetermineType(this, typename);
object value = Value.Execute(context);
if (IsDynamic?.Execute(context)?.ToBoolean() ?? false)
{
if (value == null)
{
if (type.IsValueType)
{
return(Activator.CreateInstance(type));
}
return(null);
}
if (type.IsInstanceOfType(value))
{
return(value);
}
return(null);
}
if (value == null)
{
if (type.IsValueType)
{
throw new ScriptRuntimeException($"null cannot get cast to '{typename}'", this);
}
return(null);
}
if (!type.IsInstanceOfType(value))
{
throw new ScriptRuntimeException($"Unable to cast {value} to '{typename}'", this);
}
return(value);
}
/// <inheritdoc />
protected override object AssignToken(IScriptToken token, ScriptContext context)
{
IVariableProvider provider = context.Variables.GetProvider(Name);
if (provider == null)
{
// auto declare variable in current scope if variable is not found
provider = context.Variables;
}
if (!(provider is IVariableContext variablecontext))
{
throw new ScriptRuntimeException($"Variable {Name} not writable", this);
}
object value = token.Execute(context);
variablecontext.SetVariable(Name, value);
return(value);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext scriptcontext)
{
string messagetext;
object contextdata;
try {
contextdata = Context?.Execute(scriptcontext);
}
catch (Exception e) {
throw new ScriptRuntimeException($"Unable to create context data for throw\n{e.Message}", this, e);
}
try {
messagetext = message.Execute(scriptcontext)?.ToString();
}
catch (Exception e) {
throw new ScriptRuntimeException($"Unable to create message for throw\n{e.Message}", this, e);
}
throw new ScriptRuntimeException(messagetext, this)
{
ContextData = contextdata
};
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
return(inner.Execute(context));
}
/// <inheritdoc />
public object Execute(params Variable[] variables)
{
return(script.Execute(new ScriptContext(new VariableContext(scriptvariables), new VariableProvider(null, variables))));
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
return(new Return(new ScriptValue(Value?.Execute(context))));
}
/// <summary>
/// executes a script and converts the result
/// </summary>
/// <typeparam name="T">type to convert result to</typeparam>
/// <param name="token">token to execute</param>
/// <param name="context">context to provide for execution</param>
/// <returns>converted token result</returns>
public static T Execute <T>(this IScriptToken token, ScriptContext context)
{
return(Converter.Convert <T>(token.Execute(context)));
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
object host = hosttoken.Execute(context);
if (host == null)
{
throw new ScriptRuntimeException($"'{hosttoken}' results in null", this);
}
if (host is IExternalMethod externmethod && MethodName.ToLower() == "invoke")
{
try {
return(externmethod.Invoke(context.Arguments, Parameters.Select(a => a.Execute(context)).ToArray()));
}
catch (Exception e) {
throw new ScriptRuntimeException($"Error calling external method '{externmethod}'", this, e);
}
}
MethodInfo[] methods = host.GetType().GetMethods().Where(m => m.Name.ToLower() == methodname && MethodOperations.MatchesParameterCount(m, parameters)).ToArray();
object[] parametervalues = parameters.Select(p => p.Execute(context)).ToArray();
List <ReferenceParameter> references = new List <ReferenceParameter>();
for (int i = 0; i < parameters.Length; ++i)
{
if (!(parameters[i] is Reference r))
{
continue;
}
references.Add(new ReferenceParameter(i, r));
}
Tuple <MethodInfo, int>[] evaluation = methods.Select(m => MethodOperations.GetMethodMatchValue(m, parametervalues)).Where(e => e.Item2 >= 0).OrderBy(m => m.Item2).ToArray();
if (evaluation.Length > 0)
{
return(MethodOperations.CallMethod(this, host, evaluation[0].Item1, parametervalues, context, references));
}
if (extensions != null)
{
Type extensionbase = host.GetType();
while (extensionbase != null)
{
Type lookuptype = extensionbase;
if (lookuptype.IsGenericType)
{
lookuptype = lookuptype.GetGenericTypeDefinition();
}
methods = extensions.GetExtensions(lookuptype).Where(m => m.Name.ToLower() == methodname && MethodOperations.MatchesParameterCount(m, parameters, true)).ToArray();
evaluation = methods.Select(m => MethodOperations.GetMethodMatchValue(m, parametervalues, true)).OrderBy(m => m.Item2).ToArray();
if (evaluation.Length > 0)
{
MethodInfo method = evaluation[0].Item1;
if (method.IsGenericMethodDefinition)
{
method = method.MakeGenericMethod(extensionbase.GetGenericArguments());
}
return(MethodOperations.CallMethod(this, host, method, parametervalues, context, references, true));
}
if (extensionbase == typeof(object))
{
break;
}
extensionbase = extensionbase.BaseType;
}
foreach (Type interfacetype in host.GetType().GetInterfaces().OrderBy(i => i.IsGenericType ? 0 : 1))
{
Type lookuptype = interfacetype;
if (lookuptype.IsGenericType)
{
lookuptype = lookuptype.GetGenericTypeDefinition();
}
methods = extensions.GetExtensions(lookuptype).Where(m => m.Name.ToLower() == methodname && MethodOperations.MatchesParameterCount(m, parameters, true)).ToArray();
evaluation = methods.Select(m => MethodOperations.GetMethodMatchValue(m, parametervalues, true)).OrderBy(m => m.Item2).ToArray();
if (evaluation.Length > 0)
{
MethodInfo method = evaluation[0].Item1;
if (method.IsGenericMethodDefinition)
{
method = method.MakeGenericMethod(interfacetype.GetGenericArguments());
}
return(MethodOperations.CallMethod(this, host, method, parametervalues, context, references, true));
}
}
}
throw new ScriptRuntimeException($"Method '{methodname}' matching the parameters '({string.Join(",", parametervalues)})' not found on type {host.GetType().Name}", this);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
string typename = Type.Execute(context)?.ToString();
if (typename == null)
{
throw new ScriptRuntimeException("Invalid parameter type specification", this);
}
bool isarray = typename.EndsWith("[]");
if (isarray)
{
typename = typename.Substring(0, typename.Length - 2);
}
Type type = TypeProvider.DetermineType(this, typename);
if (isarray)
{
type = typeof(IEnumerable <>).MakeGenericType(type);
}
object value;
if (context.Variables.ContainsVariable(Variable.Name) || (context.Arguments.ContainsVariable(Variable.Name)))
{
value = Variable.Execute(context);
}
else
{
if (DefaultValue != null)
{
value = DefaultValue.Execute(context);
}
else
{
throw new ScriptRuntimeException($"Variable {Variable.Name} not provided by script call and no default value provided", this);
}
}
if (value == null)
{
if (type.IsValueType)
{
throw new ScriptRuntimeException("Unable to pass null to a value parameter", this);
}
return(null);
}
if (!type.IsInstanceOfType(value))
{
try {
value = value = Converter.Convert(value, type);
}
catch (Exception e) {
throw new ScriptRuntimeException($"Unable to convert parameter '{value}' to '{typename}'", this, e);
}
}
((VariableProvider)context.Arguments).ReplaceVariable(Variable.Name, value);
return(value);
}
/// <inheritdoc />
protected override object ExecuteToken(ScriptContext context)
{
return(Converter.Convert(token.Execute(context), targettype));
}
