|
public static NewArrayInit ( Type type ) : |
||
| type | Type | A Type that represents the element type of the array. |
| return | ||
public void NewArrayInit()
{
var expected = LinqExpression.NewArrayInit(typeof(long), LinqExpression.Constant(0L));
using var g = new GraphEngine.Graph();
g.LoadFromString(@"
@prefix : <http://example.com/> .
:s
a :NewArrayInit ;
:newArrayType [
:typeName ""System.Int64"" ;
] ;
:newArrayExpressions (
[
:constantValue 0 ;
]
) ;
.
");
var s = g.GetUriNode(":s");
var actual = Expression.Parse(s).LinqExpression;
Console.WriteLine(actual.GetDebugView());
actual.Should().Be(expected);
}
public void NewArrayInit()
{
var expression =
LinqExpression.NewArrayInit(
typeof(long),
LinqExpression.Constant(0L));
ShouldRoundrip(expression);
}
public static Expression CreateSet(HashSet <Expression> values)
{
var valueType = values.First().Type;
var setType = typeof(HashSet <>).MakeGenericType(valueType);
var ctor = setType.GetConstructor(new [] { typeof(IEnumerable <>).MakeGenericType(valueType) });
var args = LinqExpression.NewArrayInit(valueType, values.Select(x => x.internalExpression));
return(new Expression(LinqExpression.New(ctor, args)));
}
public static Expression CreateDictionary(IList <Expression> keys, IList <Expression> values)
{
var keyType = keys.First().Type;
var valueType = values.First().Type;
var method = typeof(Expression).GetMethod("CreateDictionaryHelper", BindingFlags.Static | BindingFlags.NonPublic);
method = method.MakeGenericMethod(keyType, valueType);
var keysArg = LinqExpression.NewArrayInit(keyType, keys.Select(x => x.internalExpression));
var valuesArg = LinqExpression.NewArrayInit(valueType, values.Select(x => x.internalExpression));
return(new Expression(LinqExpression.Call(method, keysArg, valuesArg)));
}
void ConvertArgumentToParamType(List <Argument> arguments, ParameterInfo[] parameters, out Expr failExpr)
{
failExpr = null;
for (int i = 0; i < arguments.Count; i++)
{
var arg = arguments[i];
var param = parameters[i];
if (param.ParameterType == typeof(bool) && arg.Type != typeof(bool))
{
arg.Expression = ExprHelpers.ConvertToBoolean(context, arg.Expression);
}
else if (param.ParameterType == typeof(double) && arg.Type == typeof(string))
{
arg.Expression = ExprHelpers.ConvertToNumberAndCheck(
context, arg.Expression,
ExceptionMessage.INVOKE_BAD_ARGUMENT_GOT, i + 1, "number", "string");
}
else if (param.ParameterType == typeof(string) && arg.Type != typeof(string))
{
arg.Expression = Expr.Call(arg.Expression, MemberInfos.ObjectToString, arg.Expression);
}
else
{
if (arg.Type == param.ParameterType || arg.Type.IsSubclassOf(param.ParameterType))
{
arg.Expression = Expr.Convert(arg.Expression, param.ParameterType);
}
else
{
Func <Expr, Expr> typeNameExpr =
obj => Expr.Invoke(
Expr.Constant((Func <object, string>)BaseLibrary.Type),
Expr.Convert(obj, typeof(object)));
// Ugly reflection hack
failExpr = Expr.Throw(
Expr.New(
MemberInfos.NewRuntimeException,
Expr.Constant(ExceptionMessage.INVOKE_BAD_ARGUMENT_GOT),
Expr.NewArrayInit(
typeof(object),
Expr.Constant(i + 1, typeof(object)),
typeNameExpr(Expr.Constant(Activator.CreateInstance(param.ParameterType))),
typeNameExpr(arg.Expression))));
break;
}
}
}
}
/// <summary>
/// Gets an expression representing the value of one or more expressions, as used by a return statement
/// </summary>
Expr GetMultiExpressionValue(ParseTreeNode expressionList)
{
if (expressionList.ChildNodes.Count == 0)
{
return(Expr.Constant(null, typeof(object)));
}
if (expressionList.ChildNodes.Count == 1)
{
return(CompileExpression(expressionList.ChildNodes[0]));
}
else
{
return(Expr.NewArrayInit(typeof(object), expressionList.ChildNodes.Select(CompileExpression)));
}
}
private NewArrayExpression NewArrayExpression(ExpressionType nodeType, System.Type type, JObject obj)
{
var elementType = this.Prop(obj, "elementType", this.Type);
var expressions = this.Prop(obj, "expressions", this.Enumerable(this.Expression));
switch (nodeType)
{
case ExpressionType.NewArrayInit:
return(Expr.NewArrayInit(elementType, expressions));
case ExpressionType.NewArrayBounds:
return(Expr.NewArrayBounds(elementType, expressions));
default:
throw new NotSupportedException();
}
}
void OverflowIntoParams(List <Argument> arguments, ParameterInfo[] parameters)
{
if (arguments.Count == 0 || parameters.Length == 0)
{
return;
}
var overflowingArgs = arguments.Skip(parameters.Length - 1).ToList();
var lastParam = parameters.Last();
if (overflowingArgs.Count == 1 && overflowingArgs[0].Type == lastParam.ParameterType)
{
return;
}
Expr argExpr;
if (lastParam.IsParams())
{
var elementType = lastParam.ParameterType.GetElementType();
if (overflowingArgs.Any(arg => arg.Type != elementType && !arg.Type.IsSubclassOf(elementType)))
{
return;
}
argExpr = Expr.NewArrayInit(
elementType,
overflowingArgs.Select(arg => Expr.Convert(arg.Expression, elementType)));
}
else if (lastParam.ParameterType == typeof(Varargs))
{
argExpr = Expr.New(
MemberInfos.NewVarargs,
Expr.NewArrayInit(
typeof(object),
overflowingArgs.Select(arg => Expr.Convert(arg.Expression, typeof(object)))));
}
else
{
return;
}
arguments.RemoveRange(arguments.Count - overflowingArgs.Count, overflowingArgs.Count);
arguments.Add(new Argument(argExpr, lastParam.ParameterType));
}
static ExpressionBase CreateInvokeExpression(string funcName, IReadOnlyCollection <ExpressionBase> args)
{
var lambda = RegisterDelegates[funcName];
var argTypes = lambda.GetType().GetMethod("Invoke").GetParameters();
if (argTypes.Length == 0 || argTypes[0].GetCustomAttributes(typeof(ParamArrayAttribute), true).Length == 0)
{
if (lambda.Method.GetParameters().Length != args.Count)
{
throw new InvalidOperationException($"函数{funcName}的参数数量不匹配。");
}
}
else
{
args = new[] { ExpressionBase.NewArrayInit(typeof(object), args) };
}
var lambdaExpr = ExpressionBase.Constant(lambda);
return(ExpressionBase.Invoke(lambdaExpr, args));
}
public static System.Linq.Expressions.Expression <Func <object[], object> > CreateComplexExpression(string p = null)
{
var stateParamExpr = SysExpr.Parameter(typeof(object[]), p);
var expr = SysExpr.Lambda <Func <object[], object> >(
SysExpr.MemberInit(
SysExpr.New(_ctorOfA,
SysExpr.New(_ctorOfB),
SysExpr.Convert(SysExpr.ArrayIndex(stateParamExpr, SysExpr.Constant(11)), typeof(string)),
SysExpr.NewArrayInit(typeof(ID),
SysExpr.New(_ctorOfD1),
SysExpr.New(_ctorOfD2))),
SysExpr.Bind(_propAProp,
SysExpr.New(_ctorOfP,
SysExpr.New(_ctorOfB))),
SysExpr.Bind(_fieldABop,
SysExpr.New(_ctorOfB))),
stateParamExpr);
return(expr);
}
internal override void BuildCallNoFlow(MetaObjectBuilder /*!*/ metaBuilder, CallArguments /*!*/ args, string /*!*/ name)
{
Assert.NotNull(metaBuilder, args, name);
// 2 implicit args: self, block
var argsBuilder = new ArgsBuilder(2, _mandatoryParamCount, _optionalParamCount, _hasUnsplatParameter);
argsBuilder.SetImplicit(0, AstFactory.Box(args.TargetExpression));
argsBuilder.SetImplicit(1, args.Signature.HasBlock ? AstUtils.Convert(args.GetBlockExpression(), typeof(Proc)) : AstFactory.NullOfProc);
argsBuilder.AddCallArguments(metaBuilder, args);
if (metaBuilder.Error)
{
return;
}
// box explicit arguments:
var boxedArguments = argsBuilder.GetArguments();
for (int i = 2; i < boxedArguments.Length; i++)
{
boxedArguments[i] = AstFactory.Box(boxedArguments[i]);
}
if (_method.GetType() == ParamsArrayDelegateType)
{
// Func<object, Proc, object[], object>
metaBuilder.Result = AstFactory.CallDelegate(_method, new[] {
boxedArguments[0],
boxedArguments[1],
Ast.NewArrayInit(typeof(object), ArrayUtils.ShiftLeft(boxedArguments, 2))
});
}
else
{
metaBuilder.Result = AstFactory.CallDelegate(_method, boxedArguments);
}
}
protected override ExpressionBody Transform(ArrayExpression ax)
{
var elements = new List <ExpressionBody>(ax.Elements.Length);
var i = 0;
for (; i < ax.Elements.Length; ++i)
{
var element = ax.Elements[i];
if (element is ItemElement item)
{
elements.Add(Transform(item.Value));
}
else
{
break;
}
}
var arr = LX.NewArrayInit(typeof(LogEventPropertyValue), elements.ToArray());
var collected = LX.Call(CollectSequenceElementsMethod, arr);
for (; i < ax.Elements.Length; ++i)
{
var element = ax.Elements[i];
if (element is ItemElement item)
{
collected = LX.Call(ExtendSequenceValueWithItemMethod, collected, Transform(item.Value));
}
else
{
var spread = (SpreadElement)element;
collected = LX.Call(ExtendSequenceValueWithSpreadMethod, collected, Transform(spread.Content));
}
}
return(LX.Call(ConstructSequenceValueMethod, collected));
}
public LambdaExpression CreateLambda(Type from, Type to)
{
var input = Ex.Parameter(from, "input");
var eType = to.GetElementType();
var res = Ex.Parameter(typeof(ConversionResult <>).MakeGenericType(eType).MakeArrayType(), "res");
var end = Ex.Label(typeof(ConversionResult <>).MakeGenericType(to), "end");
var fromParameters = from.GetTypeInfo().GenericTypeArguments;
var converters = fromParameters.Select(t => new { Lambda = Ref.GetLambda(t, eType), Input = t }).ToArray();
var block = Ex.Block(new[] { res },
Ex.Assign(res, Ex.NewArrayBounds(typeof(ConversionResult <>).MakeGenericType(eType), Ex.Constant(fromParameters.Length))),
Ex.Block(converters.Select((con, i) =>
Ex.Block(
Ex.Assign(Ex.ArrayAccess(res, Ex.Constant(i)), con.Lambda.ApplyTo(Ex.PropertyOrField(input, $"Item{i + 1}"))),
Ex.IfThen(Ex.Not(Ex.Property(Ex.ArrayIndex(res, Ex.Constant(i)), nameof(IConversionResult.IsSuccessful))),
Ex.Goto(end, NoResult(to)))))),
Ex.Label(end, Result(to,
Ex.NewArrayInit(eType,
Enumerable.Range(0, fromParameters.Length)
.Select(idx => Ex.Property(Ex.ArrayIndex(res, Ex.Constant(idx)), nameof(IConversionResult.Result)))))));
var lambda = Ex.Lambda(block, input);
return(lambda);
}
protected override ExpressionBody Transform(ObjectExpression ox)
{
var names = new List <string>();
var values = new List <ExpressionBody>();
var i = 0;
for (; i < ox.Members.Length; ++i)
{
var member = ox.Members[i];
if (member is PropertyMember property)
{
if (names.Contains(property.Name))
{
var oldPos = names.IndexOf(property.Name);
values[oldPos] = Transform(property.Value);
}
else
{
names.Add(property.Name);
values.Add(Transform(property.Value));
}
}
else
{
break;
}
}
var namesConstant = LX.Constant(names.ToArray(), typeof(string[]));
var valuesArr = LX.NewArrayInit(typeof(LogEventPropertyValue), values.ToArray());
var properties = LX.Call(CollectStructurePropertiesMethod, namesConstant, valuesArr);
if (i == ox.Members.Length)
{
// No spreads; more efficient than `Complete*` because erasure is not required.
return(LX.Call(ConstructStructureValueMethod, properties));
}
for (; i < ox.Members.Length; ++i)
{
var member = ox.Members[i];
if (member is PropertyMember property)
{
properties = LX.Call(
ExtendStructureValueWithPropertyMethod,
properties,
LX.Constant(property.Name),
Transform(property.Value));
}
else
{
var spread = (SpreadMember)member;
properties = LX.Call(
ExtendStructureValueWithSpreadMethod,
properties,
Transform(spread.Content));
}
}
return(LX.Call(CompleteStructureValueMethod, properties));
}
static LambdaExpression ApplyMethodHandler(string functionName, LambdaExpression functionLambda, IFunctionExecutionHandler handler)
{
// public static int MyMethod(object arg0, int arg1) { ... }
// becomes:
// (the 'handler' object is captured and called mh)
// public static int MyMethodWrapped(object arg0, int arg1)
// {
// var fhArgs = new FunctionExecutionArgs("MyMethod", new object[] { arg0, arg1});
// int result = default(int);
// try
// {
// fh.OnEntry(fhArgs);
// if (fhArgs.FlowBehavior == FlowBehavior.Return)
// {
// result = (int)fhArgs.ReturnValue;
// }
// else
// {
// // Inner call
// result = MyMethod(arg0, arg1);
// fhArgs.ReturnValue = result;
// fh.OnSuccess(fhArgs);
// result = (int)fhArgs.ReturnValue;
// }
// }
// catch ( Exception ex )
// {
// fhArgs.Exception = ex;
// fh.OnException(fhArgs);
// // Makes no sense to me yet - I've removed this FlowBehavior enum value.
// // if (fhArgs.FlowBehavior == FlowBehavior.Continue)
// // {
// // // Finally will run, but can't change return value
// // // Should we assign result...?
// // // So Default value will be returned....?????
// // fhArgs.Exception = null;
// // }
// // else
// if (fhArgs.FlowBehavior == FlowBehavior.Return)
// {
// // Clear the Exception and return the ReturnValue instead
// // Finally will run, but can't further change return value
// fhArgs.Exception = null;
// result = (int)fhArgs.ReturnValue;
// }
// else if (fhArgs.FlowBehavior == FlowBehavior.ThrowException)
// {
// throw fhArgs.Exception;
// }
// else // if (fhArgs.FlowBehavior == FlowBehavior.Default || fhArgs.FlowBehavior == FlowBehavior.RethrowException)
// {
// throw;
// }
// }
// finally
// {
// fh.OnExit(fhArgs);
// // NOTE: fhArgs.ReturnValue is not used again here...!
// }
//
// return result;
// }
// }
// CONSIDER: There are some helpers in .NET to capture the exception context, which would allow us to preserve the stack trace in a fresh throw.
// Ensure the handler object is captured.
var mh = Expression.Constant(handler);
var funcName = Expression.Constant(functionName);
// Prepare the functionHandlerArgs that will be threaded through the handler,
// and a bunch of expressions that access various properties on it.
var fhArgs = Expr.Variable(typeof(FunctionExecutionArgs), "fhArgs");
var fhArgsReturnValue = SymbolExtensions.GetProperty(fhArgs, (FunctionExecutionArgs mea) => mea.ReturnValue);
var fhArgsException = SymbolExtensions.GetProperty(fhArgs, (FunctionExecutionArgs mea) => mea.Exception);
var fhArgsFlowBehaviour = SymbolExtensions.GetProperty(fhArgs, (FunctionExecutionArgs mea) => mea.FlowBehavior);
// Set up expressions to call the various handler methods.
// TODO: Later we can determine which of these are actually implemented, and only write out the code needed in the particular case.
var onEntry = Expr.Call(mh, SymbolExtensions.GetMethodInfo <IFunctionExecutionHandler>(meh => meh.OnEntry(null)), fhArgs);
var onSuccess = Expr.Call(mh, SymbolExtensions.GetMethodInfo <IFunctionExecutionHandler>(meh => meh.OnSuccess(null)), fhArgs);
var onException = Expr.Call(mh, SymbolExtensions.GetMethodInfo <IFunctionExecutionHandler>(meh => meh.OnException(null)), fhArgs);
var onExit = Expr.Call(mh, SymbolExtensions.GetMethodInfo <IFunctionExecutionHandler>(meh => meh.OnExit(null)), fhArgs);
// Create the new parameters for the wrapper
var outerParams = functionLambda.Parameters.Select(p => Expr.Parameter(p.Type, p.Name)).ToArray();
// Create the array of parameter values that will be put into the method handler args.
var paramsArray = Expr.NewArrayInit(typeof(object), outerParams.Select(p => Expr.Convert(p, typeof(object))));
// Prepare the result and ex(ception) local variables
var result = Expr.Variable(functionLambda.ReturnType, "result");
var ex = Expression.Parameter(typeof(Exception), "ex");
// A bunch of helper expressions:
// : new FunctionExecutionArgs(new object[] { arg0, arg1 })
var fhArgsConstr = typeof(FunctionExecutionArgs).GetConstructor(new[] { typeof(string), typeof(object[]) });
var newfhArgs = Expr.New(fhArgsConstr, funcName, paramsArray);
// : result = (int)fhArgs.ReturnValue
var resultFromReturnValue = Expr.Assign(result, Expr.Convert(fhArgsReturnValue, functionLambda.ReturnType));
// : fhArgs.ReturnValue = (object)result
var returnValueFromResult = Expr.Assign(fhArgsReturnValue, Expr.Convert(result, typeof(object)));
// : result = function(arg0, arg1)
var resultFromInnerCall = Expr.Assign(result, Expr.Invoke(functionLambda, outerParams));
// Build the Lambda wrapper, with the original parameters
var lambda = Expr.Lambda(
Expr.Block(new[] { fhArgs, result },
Expr.Assign(fhArgs, newfhArgs),
Expr.Assign(result, Expr.Default(result.Type)),
Expr.TryCatchFinally(
Expr.Block(
onEntry,
Expr.IfThenElse(
Expr.Equal(fhArgsFlowBehaviour, Expr.Constant(FlowBehavior.Return)),
resultFromReturnValue,
Expr.Block(
resultFromInnerCall,
returnValueFromResult,
onSuccess,
resultFromReturnValue))),
onExit, // finally
Expr.Catch(ex,
Expr.Block(
Expr.Assign(fhArgsException, ex),
onException,
Expr.IfThenElse(
Expr.Equal(fhArgsFlowBehaviour, Expr.Constant(FlowBehavior.Return)),
Expr.Block(
Expr.Assign(fhArgsException, Expr.Constant(null, typeof(Exception))),
resultFromReturnValue),
Expr.IfThenElse(
Expr.Equal(fhArgsFlowBehaviour, Expr.Constant(FlowBehavior.ThrowException)),
Expr.Throw(fhArgsException),
Expr.Rethrow()))))
),
result),
functionName,
outerParams);
return(lambda);
}
public override SysExpr ToExpression() => NodeType == ExpressionType.NewArrayInit
// ReSharper disable once AssignNullToNotNullAttribute
? SysExpr.NewArrayInit(Type.GetElementType(), ArgumentsToExpressions())
// ReSharper disable once AssignNullToNotNullAttribute
: SysExpr.NewArrayBounds(Type.GetElementType(), ArgumentsToExpressions());
private static Func <object, Task> MakeLifecycleDisableFunc(Type type, string name)
{
var disableMethods = type.GetMethods(BindingFlags.Public | BindingFlags.Instance)
.Select(m => (m, attrs: m.GetCustomAttributes(typeof(IEdgeLifecycleAttribute), false)))
.Select(t => (t.m, attrs: t.attrs.Cast <IEdgeLifecycleAttribute>()))
.Where(t => t.attrs.Any(a => a.Type == EdgeLifecycleType.Disable))
.Select(t => t.m).ToArray();
if (disableMethods.Length == 0)
{
Logger.loader.Notice($"Plugin {name} has no methods marked [OnExit] or [OnDisable]. Is this intentional?");
return(o => TaskEx.WhenAll());
}
var taskMethods = new List <MethodInfo>();
var nonTaskMethods = new List <MethodInfo>();
foreach (var m in disableMethods)
{
if (m.GetParameters().Length > 0)
{
throw new InvalidOperationException($"Method {m} on {type.FullName} is marked [OnExit] or [OnDisable] and has parameters.");
}
if (m.ReturnType != typeof(void))
{
if (typeof(Task).IsAssignableFrom(m.ReturnType))
{
taskMethods.Add(m);
continue;
}
else
{
Logger.loader.Warn($"Method {m} on {type.FullName} is marked [OnExit] or [OnDisable] and returns a non-Task value. It will be ignored.");
}
}
nonTaskMethods.Add(m);
}
Expression <Func <Task> > completedTaskDel = () => TaskEx.WhenAll();
var getCompletedTask = completedTaskDel.Body;
var taskWhenAll = typeof(TaskEx).GetMethod(nameof(TaskEx.WhenAll), new[] { typeof(Task[]) });
var objParam = Expression.Parameter(typeof(object), "obj");
var instVar = ExpressionEx.Variable(type, "inst");
var createExpr = Expression.Lambda <Func <object, Task> >(
ExpressionEx.Block(new[] { instVar },
nonTaskMethods
.Select(m => (Expression)Expression.Call(instVar, m))
.Prepend(ExpressionEx.Assign(instVar, Expression.Convert(objParam, type)))
.Append(
taskMethods.Count == 0
? getCompletedTask
: Expression.Call(taskWhenAll,
Expression.NewArrayInit(typeof(Task),
taskMethods.Select(m =>
(Expression)Expression.Convert(Expression.Call(instVar, m), typeof(Task))))))),
objParam);
return(createExpr.Compile());
}
public static NewArrayExpression NewArrayInit(Type type, params Expression[] initializers)
{
return(Expression.NewArrayInit(type, (IEnumerable <Expression>)initializers));
}
Exp ParseUnit(List <Token> expr)
{
Token tok;
if (expr.Count == 0)
{
return(NoneExp);
}
else if (expr.Count == 1)
{
tok = expr[0];
switch (tok.Type)
{
case TokenType.Identifier:
// keywords
switch (tok.Value)
{
case "None":
return(NoneExp);
case "True":
return(TrueExp);
case "False":
return(FalseExp);
}
// user identifiers
if (Local != null && Local.TryGetValue(tok.Value, out Exp value))
{
return(value);
}
else
{
return(GlobalAccess(tok.Value));
}
case TokenType.Number:
if (int.TryParse(tok.Value, out int i))
{
return(Exp.Constant(new Int(i), Any));
}
else if (double.TryParse(tok.Value, out double d))
{
return(Exp.Constant(new Float(d), Any));
}
break;
case TokenType.String:
return(Exp.Constant(new String(tok.Value), Any));
case TokenType.Parenthesis:
{
var w = Split(tok.Subset, TokenType.Comma);
if (w.Count == 1) // parenthesis
{
return(Parse(w[0]));
}
// tuple
if (w.Count == 0)
{
return(Exp.New(typeof(Tuple)));
}
else
{
return(Exp.New(typeof(Tuple).GetConstructor(new[] { typeof(Object[]) }),
Exp.NewArrayInit(typeof(Object), w.Select(Parse))));
}
}
case TokenType.Brackets:
{
var w = Split(tok.Subset, TokenType.Comma);
if (w.Count == 0)
{
return(Exp.New(typeof(List)));
}
else
{
return(Exp.New(typeof(List).GetConstructor(new[] { typeof(Object[]) }),
Exp.NewArrayInit(typeof(Object), w.Select(Parse))));
}
}
case TokenType.Braces:
{
var w = Split(tok.Subset, TokenType.Comma);
if (Contains(w[0], TokenType.Colon))
{
// dict
if (w.Count == 0)
{
return(Exp.New(typeof(Dict)));
}
else
{
var items = new List <ElementInit>();
var adder = typeof(Dictionary <Object, Object>).GetMethod("Add");
foreach (var v in w)
{
var row = Split(v, TokenType.Colon);
var left = Parse(row[0]);
var right = Parse(row[1]);
items.Add(Exp.ElementInit(adder, left, right));
}
return(Exp.New(typeof(Dict).GetConstructor(new[] { typeof(Dictionary <Object, Object>) }),
Exp.ListInit(Exp.New(typeof(Dictionary <Object, Object>)), items)));
}
}
else
{
// set
if (w.Count == 0)
{
return(Exp.New(typeof(Set)));
}
else
{
return(Exp.New(typeof(Set).GetConstructor(new[] { typeof(Object[]) }),
Exp.NewArrayInit(typeof(Object), w.Select(Parse))));
}
}
}
}
}
else // length > 1
{
tok = expr[0]; // starts
if (tok.Type == TokenType.Operator)
{
expr.RemoveAt(0);
Exp obj = ParseUnit(expr);
switch (tok.op)
{
case Op.Invert:
return(Exp.Call(obj, typeof(Object).GetMethod("__invert__")));
case Op.Add:
return(Exp.Call(obj, typeof(Object).GetMethod("__pos__")));
case Op.Subtract:
return(Exp.Call(obj, typeof(Object).GetMethod("__neg__")));
case Op.Not:
return(Exp.Call(obj, typeof(Object).GetMethod("__not__")));
default:
throw new Exception("invalid unary operator");
}
}
tok = expr[^ 1]; // ends