public MemberDescription(TypeDescription declaringType, ConstructorInfo constructor)
{
if (declaringType == null)
{
throw new ArgumentNullException("declaringType");
}
if (constructor == null)
{
throw new ArgumentNullException("constructor");
}
this.Name = constructor.Name;
this.DeclaringType = declaringType;
this.ResultType = declaringType;
this.member = constructor;
this.parameters = constructor.GetParameters();
this.parametersByName = this.parameters.ToDictionary(GetParameterName, StringComparer.Ordinal);
this.returnParameter = null;
this.hashCode = constructor.GetHashCode();
this.GenericArgumentsCount = constructor.IsGenericMethod ? constructor.GetGenericArguments().Length : 0;
this.IsConstructor = true;
this.IsStatic = constructor.IsStatic;
}
public MemberDescription(TypeDescription declaringType, FieldInfo field)
{
if (declaringType == null)
{
throw new ArgumentNullException("declaringType");
}
if (field == null)
{
throw new ArgumentNullException("field");
}
this.member = field;
this.hashCode = field.GetHashCode();
this.Name = field.Name;
this.DeclaringType = declaringType;
this.ResultType = field.FieldType;
var constantValue = (field.Attributes & (FieldAttributes.HasDefault | FieldAttributes.Literal)) != 0 ?
#if NETSTANDARD
(field.IsStatic ? field.GetValue(null) : null) :
#else
field.GetRawConstantValue() :
#endif
null;
if (declaringType.IsEnum && constantValue != null)
{
this.ConstantValueExpression = Expression.Constant(Enum.ToObject(declaringType, constantValue), declaringType);
}
else
{
this.ConstantValueExpression = constantValue != null?Expression.Constant(constantValue) : null;
}
this.IsStatic = field.IsStatic;
this.IsPropertyOrField = true;
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var target = default(Expression);
var arguments = node.GetArguments(throwOnError: false);
var methodName = node.GetMethodName(throwOnError: true);
var useNullPropagation = node.GetUseNullPropagation(throwOnError: false);
var methodMember = default(MemberDescription);
if (bindingContext.TryResolveMember(methodName, out methodMember))
{
if (methodMember.IsMethod == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_CALLMEMBERISNOTMETHOD, methodMember.Name, methodMember.DeclaringType), node);
return(false);
}
var targetNode = node.GetExpression(throwOnError: true);
if (AnyBinder.TryBind(targetNode, bindingContext, TypeDescription.ObjectType, out target, out bindingError) == false)
{
return(false);
}
float methodQuality;
if (methodMember.TryMakeCall(target, arguments, bindingContext, out boundExpression, out methodQuality) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDMETHOD, methodMember.Name, target.Type, arguments.Count), node);
return(false);
}
return(true);
}
var methodRef = default(TypeReference);
if (BindingContext.TryGetMethodReference(methodName, out methodRef) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVENAME, methodName), node);
return(false);
}
var targetType = default(Type);
if (TryBindTarget(node, bindingContext, out target, out targetType, out bindingError) == false)
{
return(false);
}
var isStatic = target == null;
var selectedMethodQuality = MemberDescription.QUALITY_INCOMPATIBLE;
var hasGenericParameters = methodRef.IsGenericType;
var genericArguments = default(Type[]);
if (hasGenericParameters)
{
genericArguments = new Type[methodRef.TypeArguments.Count];
for (var i = 0; i < genericArguments.Length; i++)
{
var typeArgument = methodRef.TypeArguments[i];
if (bindingContext.TryResolveType(typeArgument, out genericArguments[i]) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeArgument), node);
return(false);
}
}
}
var targetTypeDescription = TypeDescription.GetTypeDescription(targetType);
var foundMethod = default(MethodInfo);
foreach (var memberDescription in targetTypeDescription.GetMembers(methodRef.Name))
{
if (memberDescription.IsMethod == false)
{
continue;
}
var methodDescription = memberDescription;
var method = (MethodInfo)memberDescription;
foundMethod = foundMethod ?? method;
if (method.IsStatic != isStatic || method.IsGenericMethod != hasGenericParameters)
{
continue;
}
if (hasGenericParameters && memberDescription.GenericArgumentsCount != methodRef.TypeArguments.Count)
{
continue;
}
if (hasGenericParameters)
{
try
{
methodDescription = methodDescription.MakeGenericMethod(genericArguments);
method = methodDescription;
}
catch (ArgumentException exception)
{
bindingError = exception;
continue; /* An element of typeArguments does not satisfy the constraints specified for the corresponding type parameter of the current generic method definition. */
}
}
var methodQuality = 0.0f;
var methodCallExpression = default(Expression);
if (methodDescription.TryMakeCall(target, arguments, bindingContext, out methodCallExpression, out methodQuality) == false)
{
continue;
}
if (float.IsNaN(methodQuality) || methodQuality <= selectedMethodQuality)
{
continue;
}
boundExpression = methodCallExpression;
selectedMethodQuality = methodQuality;
if (Math.Abs(methodQuality - MemberDescription.QUALITY_EXACT_MATCH) < float.Epsilon)
{
break; // best match
}
}
if (bindingError != null)
{
return(false);
}
if (boundExpression == null)
{
if (foundMethod != null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDMETHOD, methodRef.Name, targetType, arguments.Count), node);
}
else
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDCALL, methodRef.Name, targetType, arguments.Count), node);
}
return(false);
}
if (useNullPropagation && target == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOAPPLYNULLCONDITIONALOPERATORONTYPEREF, targetType));
return(false);
}
if (useNullPropagation && targetTypeDescription.CanBeNull)
{
bindingContext.RegisterNullPropagationTarget(target);
}
if (targetTypeDescription.IsAssignableFrom(typeof(Type)) &&
bindingContext.IsKnownType(typeof(Type)) == false &&
(bindingContext.IsKnownType(targetType) == false || methodRef.Name.Equals("InvokeMember", StringComparison.Ordinal)))
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_RESTRICTED_MEMBER_INVOCATION, methodName, targetType, typeof(ITypeResolver)), node);
return(false);
}
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var newNode = node.GetNewExpression(throwOnError: true);
var newExpression = default(Expression);
if (AnyBinder.TryBind(newNode, bindingContext, TypeDescription.ObjectType, out newExpression, out bindingError) == false ||
newExpression is NewExpression == false)
{
if (bindingError == null)
{
bindingError = new ExpressionParserException(Properties.Resources.EXCEPTION_BIND_FAILEDTOBINDNEWEXPRESSION, node);
}
return(false);
}
var bindings = default(MemberBinding[]);
if (TryGetBindings(node, bindingContext, out bindings, out bindingError) == false)
{
return(false);
}
boundExpression = Expression.MemberInit((NewExpression)newExpression, bindings);
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
// try get type of lambda from node
var lambdaTypeName = node.GetTypeName(throwOnError: false);
var lambdaType = default(Type);
if (lambdaTypeName != null)
{
if (bindingContext.TryResolveType(lambdaTypeName, out lambdaType) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, lambdaTypeName), node);
return(false);
}
else
{
expectedType = TypeDescription.GetTypeDescription(lambdaType);
}
}
if (expectedType.HasGenericParameters || !expectedType.IsDelegate)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_VALIDDELEGATETYPEISEXPECTED, expectedType.ToString()));
return(false);
}
var expressionType = node.GetExpressionType(throwOnError: true);
var bodyNode = node.GetExpression(throwOnError: true);
var argumentsTree = node.GetArguments(throwOnError: false);
var lambdaInvokeMethod = expectedType.GetMembers(Constants.DELEGATE_INVOKE_NAME).FirstOrDefault(m => m.IsMethod && !m.IsStatic);
if (lambdaInvokeMethod == null)
{
bindingError = new MissingMethodException(string.Format(Resources.EXCEPTION_BIND_MISSINGMETHOD, expectedType.ToString(), Constants.DELEGATE_INVOKE_NAME));
return(false);
}
if (lambdaInvokeMethod.GetParametersCount() != argumentsTree.Count)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_INVALIDLAMBDAARGUMENTS, expectedType));
return(false);
}
var argumentNames = new string[argumentsTree.Count];
for (var i = 0; i < argumentNames.Length; i++)
{
var argumentNameTree = default(SyntaxTreeNode);
var argumentNameTreeType = default(string);
if (argumentsTree.TryGetValue(i, out argumentNameTree) == false ||
argumentNameTree == null ||
(argumentNameTreeType = argumentNameTree.GetExpressionType(throwOnError: true)) == null ||
(argumentNameTreeType == Constants.EXPRESSION_TYPE_PROPERTY_OR_FIELD ||
argumentNameTreeType == Constants.EXPRESSION_TYPE_MEMBER_RESOLVE ||
argumentNameTreeType == Constants.EXPRESSION_TYPE_PARAMETER) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_MISSINGATTRONNODE, Constants.EXPRESSION_ATTRIBUTE, expressionType), node);
return(false);
}
argumentNames[i] = argumentNameTree.GetMemberName(throwOnError: true);
}
var lambdaParameters = new ParameterExpression[argumentsTree.Count];
for (var i = 0; i < argumentsTree.Count; i++)
{
lambdaParameters[i] = Expression.Parameter(lambdaInvokeMethod.GetParameter(i).ParameterType, argumentNames[i]);
}
var currentParameters = bindingContext.Parameters;
var newParameters = new List <ParameterExpression>(lambdaParameters.Length + currentParameters.Count);
// add all lambda's parameters
newParameters.AddRange(lambdaParameters);
// add closure parameters
foreach (var parameterExpr in currentParameters)
{
if (Array.IndexOf(argumentNames, parameterExpr.Name) < 0)
{
newParameters.Add(parameterExpr);
}
}
var nestedBindingContext = bindingContext.CreateNestedContext(newParameters.AsReadOnly(), lambdaInvokeMethod.ResultType);
var body = default(Expression);
if (AnyBinder.TryBindInNewScope(bodyNode, nestedBindingContext, TypeDescription.GetTypeDescription(lambdaInvokeMethod.ResultType), out body, out bindingError) == false)
{
return(false);
}
Debug.Assert(body != null, "body != null");
boundExpression = Expression.Lambda(expectedType, body, lambdaParameters);
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var valueObj = node.GetValue(throwOnError: true);
var typeName = node.GetTypeName(throwOnError: true);
var type = default(Type);
if (bindingContext.TryResolveType(typeName, out type) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeName), node);
return(false);
}
var value = ChangeType(valueObj, type);
boundExpression = Expression.Constant(value);
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var expressionType = node.GetExpressionType(throwOnError: true);
var operandNode = node.GetExpression(throwOnError: true);
var operand = default(Expression);
var methodName = node.GetMethodName(throwOnError: false);
var methodMember = default(MemberDescription);
if (AnyBinder.TryBindInNewScope(operandNode, bindingContext, TypeDescription.ObjectType, out operand, out bindingError) == false)
{
return(false);
}
if (methodName != null)
{
bindingContext.TryResolveMember(methodName, out methodMember);
}
Debug.Assert(operand != null, "operand != null");
switch (expressionType)
{
case Constants.EXPRESSION_TYPE_NEGATE:
if (ExpressionUtils.TryPromoteUnaryOperation(ref operand, ExpressionType.Negate, out boundExpression) == false)
{
// fixing b_u_g in mono expression compiler: Negate on float or double = exception
if (operand.Type == typeof(double) || operand.Type == typeof(float))
{
boundExpression = Expression.Multiply(operand, operand.Type == typeof(float) ? ExpressionUtils.NegativeSingle : ExpressionUtils.NegativeDouble);
}
else
{
boundExpression = Expression.Negate(operand, methodMember);
}
}
break;
case Constants.EXPRESSION_TYPE_NEGATE_CHECKED:
if (ExpressionUtils.TryPromoteUnaryOperation(ref operand, ExpressionType.NegateChecked, out boundExpression) == false)
{
// fixing b_u_g in mono expression compiler: Negate on float or double = exception
if (operand.Type == typeof(double) || operand.Type == typeof(float))
{
boundExpression = Expression.Multiply(operand, operand.Type == typeof(float) ? ExpressionUtils.NegativeSingle : ExpressionUtils.NegativeDouble);
}
else
{
boundExpression = Expression.NegateChecked(operand, methodMember);
}
}
break;
case Constants.EXPRESSION_TYPE_COMPLEMENT:
case Constants.EXPRESSION_TYPE_NOT:
if (ExpressionUtils.TryPromoteUnaryOperation(ref operand, ExpressionType.Not, out boundExpression) == false)
{
boundExpression = Expression.Not(operand, methodMember);
}
break;
case Constants.EXPRESSION_TYPE_UNARY_PLUS:
if (ExpressionUtils.TryPromoteUnaryOperation(ref operand, ExpressionType.UnaryPlus, out boundExpression) == false)
{
boundExpression = Expression.UnaryPlus(operand, methodMember);
}
break;
case Constants.EXPRESSION_TYPE_ARRAY_LENGTH:
boundExpression = Expression.ArrayLength(operand);
break;
default:
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNKNOWNEXPRTYPE, expressionType), node);
return(false);
}
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
if (node == null)
{
throw new ArgumentNullException("node");
}
var arguments = node.GetArguments(throwOnError: false);
var methodName = node.GetMethodName(throwOnError: false);
if (methodName != null)
{
return(TryBindToMethod(node, methodName, arguments, bindingContext, expectedType, out boundExpression, out bindingError));
}
else
{
var typeName = node.GetTypeName(throwOnError: true);
return(TryBindToType(node, typeName, arguments, bindingContext, expectedType, out boundExpression, out bindingError));
}
}
public bool TryMakeCall(Expression target, ArgumentsTree argumentsTree, BindingContext bindingContext, out Expression expression, out float expressionQuality)
{
if (argumentsTree == null)
{
throw new ArgumentNullException("argumentsTree");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (!this.IsStatic && !this.IsConstructor && target == null)
{
throw new ArgumentNullException("target");
}
expression = null;
expressionQuality = QUALITY_INCOMPATIBLE;
if (this.parameters == null) // not a method, constructor, indexer
{
return(false);
}
// check argument count
if (argumentsTree.Count > this.parameters.Length)
{
return(false); // not all arguments are bound to parameters
}
var requiredParametersCount = this.parameters.Length - this.parameters.Count(p => p.IsOptional);
if (argumentsTree.Count < requiredParametersCount)
{
return(false); // not all required parameters has values
}
// bind arguments
var parametersQuality = 0.0f;
var arguments = default(Expression[]);
foreach (var argumentName in argumentsTree.Keys)
{
var parameter = default(ParameterInfo);
var parameterIndex = 0;
if (HasDigitsOnly(argumentName))
{
parameterIndex = int.Parse(argumentName, Constants.DefaultFormatProvider);
if (parameterIndex >= this.parameters.Length)
{
return(false); // position out of range
}
parameter = this.parameters[parameterIndex];
if (argumentsTree.ContainsKey(parameter.Name))
{
return(false); // positional intersects named
}
}
else
{
if (this.parametersByName.TryGetValue(argumentName, out parameter) == false)
{
return(false); // parameter is not found
}
parameterIndex = parameter.Position;
}
var expectedType = TypeDescription.GetTypeDescription(parameter.ParameterType);
var argValue = default(Expression);
var bindingError = default(Exception);
if (AnyBinder.TryBindInNewScope(argumentsTree[argumentName], bindingContext, expectedType, out argValue, out bindingError) == false)
{
return(false);
}
Debug.Assert(argValue != null, "argValue != null");
var quality = 0.0f;
if (ExpressionUtils.TryMorphType(ref argValue, expectedType, out quality) == false || quality <= 0)
{
return(false); // failed to bind parameter
}
parametersQuality += quality; // casted
if (arguments == null)
{
arguments = new Expression[this.parameters.Length];
}
arguments[parameterIndex] = argValue;
}
if (this.parameters.Length > 0)
{
if (arguments == null)
{
arguments = new Expression[this.parameters.Length];
}
for (var i = 0; i < arguments.Length; i++)
{
if (arguments[i] != null)
{
continue;
}
var parameter = this.parameters[i];
if (parameter.IsOptional == false)
{
return(false); // missing required parameter
}
var typeDescription = TypeDescription.GetTypeDescription(parameter.ParameterType);
arguments[i] = typeDescription.DefaultExpression;
parametersQuality += TypeConversion.QUALITY_SAME_TYPE;
}
expressionQuality = parametersQuality / this.parameters.Length;
}
else
{
expressionQuality = QUALITY_EXACT_MATCH;
}
if (this.member is MethodInfo)
{
if (this.IsStatic)
{
expression = Expression.Call(this, arguments);
}
else if (this.Name == Constants.DELEGATE_INVOKE_NAME && this.DeclaringType.IsDelegate)
{
expression = Expression.Invoke(target, arguments);
}
else
{
expression = Expression.Call(target, this, arguments);
}
return(true);
}
else if (this.member is ConstructorInfo)
{
expression = Expression.New((ConstructorInfo)this.member, arguments);
return(true);
}
else if (this.member is PropertyInfo)
{
if (this.IsStatic)
{
expression = Expression.Call(this, arguments);
}
else
{
expression = Expression.Call(target, this, arguments);
}
return(true);
}
expressionQuality = QUALITY_INCOMPATIBLE;
return(false);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var expressionNode = node.GetExpression(throwOnError: true);
return(AnyBinder.TryBindInNewScope(expressionNode, bindingContext, expectedType, out boundExpression, out bindingError));
}
public static bool TryBindInNewScope(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
bindingContext = bindingContext.CreateNestedContext();
var result = TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError);
bindingContext.CompleteNullPropagation(ref boundExpression);
return(result);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
try
{
var expressionType = node.GetExpressionType(throwOnError: true);
switch (expressionType)
{
case Constants.EXPRESSION_TYPE_PROPERTY_OR_FIELD:
return(PropertyOrFieldBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_CONSTANT:
return(ConstantBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_CALL:
return(CallBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case "Enclose":
case Constants.EXPRESSION_TYPE_UNCHECKED_SCOPE:
case Constants.EXPRESSION_TYPE_CHECKED_SCOPE:
case Constants.EXPRESSION_TYPE_GROUP:
return(GroupBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_INVOKE:
return(InvokeBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_LAMBDA:
return(LambdaBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_INDEX:
return(IndexBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_TYPEOF:
return(TypeOfBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_CONVERT:
case Constants.EXPRESSION_TYPE_CONVERTCHECKED:
case Constants.EXPRESSION_TYPE_TYPEIS:
case Constants.EXPRESSION_TYPE_TYPEAS:
return(TypeBinaryBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_DEFAULT:
return(DefaultBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_NEW:
return(NewBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_NEW_ARRAY_BOUNDS:
return(NewArrayBoundsBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_ADD:
case Constants.EXPRESSION_TYPE_ADD_CHECKED:
case Constants.EXPRESSION_TYPE_SUBTRACT:
case Constants.EXPRESSION_TYPE_SUBTRACT_CHECKED:
case Constants.EXPRESSION_TYPE_LEFTSHIFT:
case Constants.EXPRESSION_TYPE_RIGHTSHIFT:
case Constants.EXPRESSION_TYPE_GREATERTHAN:
case Constants.EXPRESSION_TYPE_GREATERTHAN_OR_EQUAL:
case Constants.EXPRESSION_TYPE_LESSTHAN:
case Constants.EXPRESSION_TYPE_LESSTHAN_OR_EQUAL:
case Constants.EXPRESSION_TYPE_POWER:
case Constants.EXPRESSION_TYPE_DIVIDE:
case Constants.EXPRESSION_TYPE_MULTIPLY:
case Constants.EXPRESSION_TYPE_MULTIPLY_CHECKED:
case Constants.EXPRESSION_TYPE_MODULO:
case Constants.EXPRESSION_TYPE_EQUAL:
case Constants.EXPRESSION_TYPE_NOTEQUAL:
case Constants.EXPRESSION_TYPE_AND:
case Constants.EXPRESSION_TYPE_OR:
case Constants.EXPRESSION_TYPE_EXCLUSIVEOR:
case Constants.EXPRESSION_TYPE_ANDALSO:
case Constants.EXPRESSION_TYPE_ORELSE:
case Constants.EXPRESSION_TYPE_COALESCE:
return(BinaryBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_NEGATE:
case Constants.EXPRESSION_TYPE_NEGATE_CHECKED:
case Constants.EXPRESSION_TYPE_COMPLEMENT:
case Constants.EXPRESSION_TYPE_NOT:
case Constants.EXPRESSION_TYPE_UNARYPLUS:
return(UnaryBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
case Constants.EXPRESSION_TYPE_CONDITION:
return(ConditionBinder.TryBind(node, bindingContext, expectedType, out boundExpression, out bindingError));
default:
boundExpression = null;
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNKNOWNEXPRTYPE, expressionType), node);
return(false);
}
}
catch (ExpressionParserException error)
{
boundExpression = null;
bindingError = error;
return(false);
}
catch (Exception error)
{
boundExpression = null;
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_FAILEDTOBIND, node.GetExpressionType(throwOnError: false) ?? "<unknown>", error.Message), error, node);
return(false);
}
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
bindingError = null;
boundExpression = null;
bindingError = null;
var operandNode = node.GetExpression(throwOnError: true);
var operand = default(Expression);
if (AnyBinder.TryBindInNewScope(operandNode, bindingContext, TypeDescription.ObjectType, out operand, out bindingError) == false)
{
return(false);
}
boundExpression = Expression.Quote(operand);
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var expressionType = node.GetExpressionType(throwOnError: true);
var targetNode = node.GetExpression(throwOnError: true);
var typeName = node.GetTypeName(throwOnError: true);
var type = default(Type);
if (bindingContext.TryResolveType(typeName, out type) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeName), node);
return(false);
}
var target = default(Expression);
if (AnyBinder.TryBindInNewScope(targetNode, bindingContext, TypeDescription.ObjectType, out target, out bindingError) == false)
{
return(false);
}
Debug.Assert(target != null, "target != null");
switch (expressionType)
{
case Constants.EXPRESSION_TYPE_TYPE_IS:
boundExpression = Expression.TypeIs(target, type);
break;
case Constants.EXPRESSION_TYPE_TYPE_AS:
boundExpression = Expression.TypeAs(target, type);
break;
case Constants.EXPRESSION_TYPE_CONVERT:
boundExpression = Expression.Convert(target, type);
break;
case Constants.EXPRESSION_TYPE_CONVERT_CHECKED:
boundExpression = Expression.ConvertChecked(target, type);
break;
default:
boundExpression = null;
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNKNOWNEXPRTYPE, expressionType), node);
return(false);
}
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
bindingError = null;
boundExpression = null;
var test = node.GetTestExpression(throwOnError: true);
var ifTrue = node.GetIfTrueExpression(throwOnError: true);
var ifFalse = node.GetIfFalseExpression(throwOnError: true);
var testExpression = default(Expression);
var ifTrueBranch = default(Expression);
var ifFalseBranch = default(Expression);
if (AnyBinder.TryBindInNewScope(test, bindingContext, TypeDescription.GetTypeDescription(typeof(bool)), out testExpression, out bindingError) == false)
{
return(false);
}
if (AnyBinder.TryBindInNewScope(ifTrue, bindingContext, TypeDescription.ObjectType, out ifTrueBranch, out bindingError) == false)
{
return(false);
}
if (AnyBinder.TryBindInNewScope(ifFalse, bindingContext, TypeDescription.ObjectType, out ifFalseBranch, out bindingError) == false)
{
return(false);
}
Debug.Assert(testExpression != null, "testExpression != null");
Debug.Assert(ifTrueBranch != null, "ifTrueBranch != null");
Debug.Assert(ifFalseBranch != null, "ifFalseBranch != null");
if (ExpressionUtils.TryPromoteBinaryOperation(ref ifTrueBranch, ref ifFalseBranch, ExpressionType.Conditional, out boundExpression) == false)
{
if (ifTrueBranch.Type != ifFalseBranch.Type)
{
float quality;
ExpressionUtils.TryMorphType(ref ifTrueBranch, ifFalseBranch.Type, out quality);
}
boundExpression = Expression.Condition(testExpression, ifTrueBranch, ifFalseBranch);
}
return(true);
}
private static bool TryGetBinding(object bindingNode, BindingContext bindingContext, out MemberBinding memberBinding, out Exception bindingError)
{
bindingError = null;
memberBinding = null;
var bindingNodeTree = bindingNode as SyntaxTreeNode;
if (bindingNodeTree == null)
{
return(false);
}
var bindingType = (string)bindingNodeTree.GetTypeName(throwOnError: true);
var memberObj = bindingNodeTree.GetMember(throwOnError: true);
var member = default(MemberDescription);
if (bindingContext.TryResolveMember(memberObj, out member) == false)
{
return(false);
}
var memberValueType = TypeDescription.GetTypeDescription(member.ResultType);
// ReSharper disable once SwitchStatementMissingSomeCases
switch (bindingType)
{
case "Assignment":
var expressionNode = bindingNodeTree.GetExpression(throwOnError: true);
var expression = default(Expression);
if (AnyBinder.TryBindInNewScope(expressionNode, bindingContext, memberValueType, out expression, out bindingError) == false)
{
return(false); // file to bind member's value
}
if (member.IsMethod)
{
memberBinding = Expression.Bind((MethodInfo)member, expression);
}
else
{
memberBinding = Expression.Bind((MemberInfo)member, expression);
}
return(true);
case "MemberBinding":
var bindings = default(MemberBinding[]);
if (TryGetBindings(bindingNodeTree, bindingContext, out bindings, out bindingError) == false)
{
return(false); // failed to resolve bindings
}
if (member.IsMethod)
{
memberBinding = Expression.MemberBind((MethodInfo)member, bindings);
}
else
{
memberBinding = Expression.MemberBind((MemberInfo)member, bindings);
}
return(true);
case "ListBinding":
var initializers = default(ElementInit[]);
if (ListInitBinder.TryGetListInitializers(bindingNodeTree, bindingContext, out initializers, out bindingError) == false)
{
return(false); // failed to resolve list initializers
}
if (member.IsMethod)
{
memberBinding = Expression.ListBind((MethodInfo)member, initializers);
}
else
{
memberBinding = Expression.ListBind((MemberInfo)member, initializers);
}
return(true);
}
return(false);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var expressionType = node.GetExpressionType(throwOnError: true);
var left = node.GetLeftExpression(throwOnError: true);
var right = node.GetRightExpression(throwOnError: true);
var leftOperand = default(Expression);
var rightOperand = default(Expression);
if (AnyBinder.TryBindInNewScope(left, bindingContext, TypeDescription.ObjectType, out leftOperand, out bindingError) == false)
{
return(false);
}
if (AnyBinder.TryBindInNewScope(right, bindingContext, TypeDescription.ObjectType, out rightOperand, out bindingError) == false)
{
return(false);
}
Debug.Assert(leftOperand != null, "leftOperand != null");
Debug.Assert(rightOperand != null, "rightOperand != null");
switch (expressionType)
{
case Constants.EXPRESSION_TYPE_ADD:
if (leftOperand.Type == typeof(string) || rightOperand.Type == typeof(string))
{
boundExpression = Expression.Call
(
StringConcat.Method,
Expression.Convert(leftOperand, typeof(object)),
Expression.Convert(rightOperand, typeof(object))
);
break;
}
else
{
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Add, out boundExpression) == false)
{
boundExpression = Expression.Add(leftOperand, rightOperand);
}
break;
}
case Constants.EXPRESSION_TYPE_ADD_CHECKED:
if (leftOperand.Type == typeof(string) || rightOperand.Type == typeof(string))
{
boundExpression = Expression.Call
(
StringConcat.Method,
Expression.Convert(leftOperand, typeof(object)),
Expression.Convert(rightOperand, typeof(object))
);
break;
}
else
{
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.AddChecked, out boundExpression) == false)
{
boundExpression = Expression.AddChecked(leftOperand, rightOperand);
}
break;
}
case Constants.EXPRESSION_TYPE_SUBTRACT:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Subtract, out boundExpression) == false)
{
boundExpression = Expression.Subtract(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_SUBTRACT_CHECKED:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.SubtractChecked, out boundExpression) == false)
{
boundExpression = Expression.SubtractChecked(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_LEFTSHIFT:
ExpressionUtils.TryPromoteUnaryOperation(ref leftOperand, ExpressionType.LeftShift, out boundExpression);
ExpressionUtils.TryPromoteUnaryOperation(ref rightOperand, ExpressionType.LeftShift, out boundExpression);
boundExpression = Expression.LeftShift(leftOperand, rightOperand);
break;
case Constants.EXPRESSION_TYPE_RIGHTSHIFT:
ExpressionUtils.TryPromoteUnaryOperation(ref leftOperand, ExpressionType.RightShift, out boundExpression);
ExpressionUtils.TryPromoteUnaryOperation(ref rightOperand, ExpressionType.RightShift, out boundExpression);
boundExpression = Expression.RightShift(leftOperand, rightOperand);
break;
case Constants.EXPRESSION_TYPE_GREATERTHAN:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.GreaterThan, out boundExpression) == false)
{
boundExpression = Expression.GreaterThan(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_GREATERTHAN_OR_EQUAL:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.GreaterThanOrEqual, out boundExpression) == false)
{
boundExpression = Expression.GreaterThanOrEqual(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_LESSTHAN:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.LessThan, out boundExpression) == false)
{
boundExpression = Expression.LessThan(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_LESSTHAN_OR_EQUAL:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.LessThanOrEqual, out boundExpression) == false)
{
boundExpression = Expression.LessThanOrEqual(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_POWER:
var resultType = TypeDescription.GetTypeDescription(leftOperand.Type);
var resultTypeUnwrap = resultType.IsNullable ? resultType.UnderlyingType : resultType;
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Power, out boundExpression) == false)
{
var operandsType = TypeDescription.GetTypeDescription(leftOperand.Type);
var operandTypeUnwrap = operandsType.IsNullable ? operandsType.UnderlyingType : operandsType;
var promoteToNullable = resultType.IsNullable || operandsType.IsNullable;
if (operandTypeUnwrap != typeof(double) && leftOperand.Type == rightOperand.Type)
{
leftOperand = Expression.ConvertChecked(leftOperand, promoteToNullable ? typeof(double?) : typeof(double));
rightOperand = Expression.ConvertChecked(rightOperand, promoteToNullable ? typeof(double?) : typeof(double));
}
boundExpression = Expression.Power(leftOperand, rightOperand);
if (resultType != typeof(double))
{
boundExpression = Expression.ConvertChecked(boundExpression, promoteToNullable ? resultTypeUnwrap.GetNullableType() : resultTypeUnwrap);
}
}
break;
case Constants.EXPRESSION_TYPE_DIVIDE:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Divide, out boundExpression) == false)
{
boundExpression = Expression.Divide(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_MULTIPLY:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Multiply, out boundExpression) == false)
{
boundExpression = Expression.Multiply(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_MULTIPLY_CHECKED:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.MultiplyChecked, out boundExpression) == false)
{
boundExpression = Expression.MultiplyChecked(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_MODULO:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Modulo, out boundExpression) == false)
{
boundExpression = Expression.Modulo(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_EQUAL:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Equal, out boundExpression) == false)
{
boundExpression = Expression.Equal(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_NOTEQUAL:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.NotEqual, out boundExpression) == false)
{
boundExpression = Expression.NotEqual(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_AND:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.And, out boundExpression) == false)
{
boundExpression = Expression.And(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_OR:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Or, out boundExpression) == false)
{
boundExpression = Expression.Or(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_EXCLUSIVEOR:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.ExclusiveOr, out boundExpression) == false)
{
boundExpression = Expression.ExclusiveOr(leftOperand, rightOperand);
}
break;
case Constants.EXPRESSION_TYPE_ANDALSO:
boundExpression = Expression.AndAlso(leftOperand, rightOperand);
break;
case Constants.EXPRESSION_TYPE_ORELSE:
boundExpression = Expression.OrElse(leftOperand, rightOperand);
break;
case Constants.EXPRESSION_TYPE_COALESCE:
if (ExpressionUtils.TryPromoteBinaryOperation(ref leftOperand, ref rightOperand, ExpressionType.Coalesce, out boundExpression) == false)
{
boundExpression = Expression.Coalesce(leftOperand, rightOperand);
}
break;
default:
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNKNOWNEXPRTYPE, expressionType), node);
return(false);
}
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
if (TryBindMethodCall(node, bindingContext, expectedType, out boundExpression, out bindingError))
{
return(true);
}
var targetNode = node.GetExpression(throwOnError: true);
var arguments = node.GetArguments(throwOnError: false);
var target = default(Expression);
if (AnyBinder.TryBind(targetNode, bindingContext, TypeDescription.ObjectType, out target, out bindingError) == false)
{
return(false);
}
Debug.Assert(target != null, "target != null");
var typeDescription = TypeDescription.GetTypeDescription(target.Type);
if (typeDescription.IsDelegate == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOINVOKENONDELEG, target.Type), node);
return(false);
}
var methodDescription = typeDescription.GetMembers(Constants.DELEGATE_INVOKE_NAME).FirstOrDefault(m => m.IsMethod && !m.IsStatic);
if (methodDescription == null)
{
throw new MissingMethodException(string.Format(Properties.Resources.EXCEPTION_BIND_MISSINGMETHOD, target.Type.FullName, Constants.DELEGATE_INVOKE_NAME));
}
var expressionQuality = 0.0f;
if (methodDescription.TryMakeCall(target, arguments, bindingContext, out boundExpression, out expressionQuality) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDDELEG, target.Type, methodDescription), node);
return(false);
}
return(true);
}
private static bool TryBindToType(SyntaxTreeNode node, object typeName, ArgumentsTree arguments, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
boundExpression = null;
bindingError = null;
var type = default(Type);
if (bindingContext.TryResolveType(typeName, out type) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeName), node);
return(false);
}
var typeDescription = TypeDescription.GetTypeDescription(type);
// feature: lambda building via new Func()
var lambdaArgument = default(SyntaxTreeNode);
if (typeDescription.IsDelegate && arguments.Count == 1 && (lambdaArgument = arguments.Values.Single()).GetExpressionType(throwOnError: true) == Constants.EXPRESSION_TYPE_LAMBDA)
{
return(LambdaBinder.TryBind(lambdaArgument, bindingContext, typeDescription, out boundExpression, out bindingError));
}
var selectedConstructorQuality = MemberDescription.QUALITY_INCOMPATIBLE;
foreach (var constructorDescription in typeDescription.Constructors)
{
var constructorQuality = MemberDescription.QUALITY_INCOMPATIBLE;
var constructorCall = default(Expression);
if (constructorDescription.TryMakeCall(null, arguments, bindingContext, out constructorCall, out constructorQuality) == false)
{
continue;
}
if (float.IsNaN(constructorQuality) || constructorQuality <= selectedConstructorQuality)
{
continue;
}
boundExpression = constructorCall;
selectedConstructorQuality = constructorQuality;
if (Math.Abs(constructorQuality - MemberDescription.QUALITY_EXACT_MATCH) < float.Epsilon)
{
break; // best match
}
}
if (boundExpression == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDCONSTRUCTOR, type), node);
return(false);
}
return(true);
}
public static bool TryBindMethodCall(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
// bindingError could return null from this method
bindingError = null;
boundExpression = null;
var methodNameNode = node.GetExpression(throwOnError: true);
var methodNameNodeType = methodNameNode.GetExpressionType(throwOnError: true);
if (methodNameNodeType != Constants.EXPRESSION_TYPE_PROPERTY_OR_FIELD &&
methodNameNodeType != Constants.EXPRESSION_TYPE_MEMBER_RESOLVE)
{
return(false);
}
var methodTargetNode = methodNameNode.GetExpression(throwOnError: false);
var methodTarget = default(Expression);
var type = default(Type);
var typeReference = default(TypeReference);
var isStatic = false;
if (methodTargetNode == null && bindingContext.Global != null)
{
methodTarget = bindingContext.Global;
type = methodTarget.Type;
isStatic = false;
}
else if (methodTargetNode == null)
{
var methodName = methodNameNode.GetMemberName(throwOnError: false);
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVENAME, methodName ?? "<unknown>"), node);
return(false);
}
else if (BindingContext.TryGetTypeReference(methodTargetNode, out typeReference) && bindingContext.TryResolveType(typeReference, out type))
{
isStatic = true;
}
else if (AnyBinder.TryBind(methodTargetNode, bindingContext, TypeDescription.ObjectType, out methodTarget, out bindingError))
{
Debug.Assert(methodTarget != null, "methodTarget != null");
isStatic = false;
type = methodTarget.Type;
}
else
{
if (typeReference != null && bindingError == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeReference), node);
}
return(false);
}
var methodRef = default(TypeReference);
if (type == null || BindingContext.TryGetMethodReference(methodNameNode, out methodRef) == false)
{
return(false);
}
var typeDescription = TypeDescription.GetTypeDescription(type);
foreach (var member in typeDescription.GetMembers(methodRef.Name))
{
if (member.IsMethod == false || member.IsStatic != isStatic)
{
continue;
}
var callNode = new SyntaxTreeNode(new Dictionary <string, object>
{
{ Constants.EXPRESSION_ATTRIBUTE, methodTarget ?? (object)type },
{ Constants.ARGUMENTS_ATTRIBUTE, node.GetValueOrDefault(Constants.ARGUMENTS_ATTRIBUTE, default(object)) },
{ Constants.METHOD_ATTRIBUTE, methodRef },
{ Constants.USE_NULL_PROPAGATION_ATTRIBUTE, methodNameNode.GetValueOrDefault(Constants.USE_NULL_PROPAGATION_ATTRIBUTE, default(object)) },
{ Constants.EXPRESSION_POSITION, methodNameNode.GetPosition(throwOnError: false) }
});
return(CallBinder.TryBind(callNode, bindingContext, expectedType, out boundExpression, out bindingError));
}
return(false);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
boundExpression = null;
bindingError = null;
var useNullPropagation = node.GetUseNullPropagation(throwOnError: false);
var arguments = node.GetArguments(throwOnError: true);
var targetNode = node.GetExpression(throwOnError: true);
var target = default(Expression);
if (AnyBinder.TryBind(targetNode, bindingContext, TypeDescription.ObjectType, out target, out bindingError) == false)
{
return(false);
}
Debug.Assert(target != null, "target != null");
var targetTypeDescription = TypeDescription.GetTypeDescription(target.Type);
if (target.Type.IsArray)
{
var indexType = TypeDescription.Int32Type;
var indexingExpressions = new Expression[arguments.Count];
for (var i = 0; i < indexingExpressions.Length; i++)
{
var argument = default(SyntaxTreeNode);
if (arguments.TryGetValue(i, out argument) == false)
{
bindingError = new ExpressionParserException(string.Format(Resources.EXCEPTION_BIND_MISSINGMETHODPARAMETER, i), node);
return(false);
}
if (AnyBinder.TryBindInNewScope(argument, bindingContext, indexType, out indexingExpressions[i], out bindingError) == false)
{
return(false);
}
Debug.Assert(indexingExpressions[i] != null, "indexingExpressions[i] != null");
}
try
{
if (indexingExpressions.Length == 1)
{
boundExpression = Expression.ArrayIndex(target, indexingExpressions[0]);
}
else
{
boundExpression = Expression.ArrayIndex(target, indexingExpressions);
}
}
catch (Exception exception)
{
bindingError = new ExpressionParserException(exception.Message, exception, node);
return(false);
}
}
else
{
var selectedIndexerQuality = MemberDescription.QUALITY_INCOMPATIBLE;
foreach (var indexer in targetTypeDescription.Indexers)
{
var indexerQuality = MemberDescription.QUALITY_INCOMPATIBLE;
var indexerCall = default(Expression);
if (indexer.TryMakeCall(target, arguments, bindingContext, out indexerCall, out indexerQuality) == false)
{
continue;
}
if (indexerQuality <= selectedIndexerQuality)
{
continue;
}
boundExpression = indexerCall;
selectedIndexerQuality = indexerQuality;
}
}
if (boundExpression == null)
{
bindingError = new ExpressionParserException(string.Format(Resources.EXCEPTION_BIND_UNABLETOBINDINDEXER, target.Type), node);
return(false);
}
if (useNullPropagation && targetTypeDescription.CanBeNull)
{
bindingContext.RegisterNullPropagationTarget(target);
}
return(true);
}
public bool TryResolveMember(object memberName, out MemberDescription member)
{
member = null;
if (memberName is SyntaxTreeNode == false)
{
return(false);
}
var memberNode = (SyntaxTreeNode)memberName;
var typeName = memberNode.GetTypeName(throwOnError: false);
var type = default(Type);
if (typeName == null || this.TryResolveType(typeName, out type) == false)
{
return(false);
}
var name = memberNode.GetName(throwOnError: false);
var nameRef = default(TypeReference);
if (name == null || TryGetTypeReference(name, out nameRef) == false)
{
return(false);
}
var genericArguments = default(Type[]);
if (nameRef.IsGenericType)
{
genericArguments = new Type[nameRef.TypeArguments.Count];
for (var i = 0; i < genericArguments.Length; i++)
{
var typeArgument = nameRef.TypeArguments[i];
if (this.TryResolveType(typeArgument, out genericArguments[i]) == false)
{
return(false);
}
}
}
var typeDescription = TypeDescription.GetTypeDescription(type);
var argumentNames = memberNode.GetArgumentNames(throwOnError: false);
var members = nameRef.Name == ".ctor" ? typeDescription.Constructors : typeDescription.GetMembers(nameRef.Name);
foreach (var declaredMember in members)
{
if ((declaredMember.IsMethod || declaredMember.IsConstructor) && argumentNames != null)
{
var paramsCount = declaredMember.GetParametersCount();
if (paramsCount != argumentNames.Count)
{
continue;
}
else if (paramsCount > 0)
{
for (var i = 0; i < paramsCount; i++)
{
var parameter = declaredMember.GetParameter(i);
var parameterIndex = Constants.GetIndexAsString(parameter.Position);
var argumentName = default(string);
if (argumentNames.TryGetValue(parameterIndex, out argumentName) == false)
{
break;
}
if (string.Equals(argumentName, parameter.Name, StringComparison.OrdinalIgnoreCase) == false &&
string.Equals(argumentName, parameterIndex, StringComparison.OrdinalIgnoreCase) == false)
{
break;
}
if (i == paramsCount - 1)
{
member = declaredMember;
return(TryMakeGenericMethod(ref member, genericArguments));
}
}
}
else
{
member = declaredMember;
return(TryMakeGenericMethod(ref member, genericArguments));
}
}
else if (nameRef.TypeArguments.Count == declaredMember.GenericArgumentsCount)
{
member = declaredMember;
return(TryMakeGenericMethod(ref member, genericArguments));
}
}
return(false);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var typeName = node.GetTypeName(throwOnError: true);
var type = default(Type);
if (bindingContext.TryResolveType(typeName, out type) == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVETYPE, typeName), node);
return(false);
}
var elementType = TypeDescription.GetTypeDescription(type);
var arguments = node.GetArguments(throwOnError: true);
var argumentExpressions = new Expression[arguments.Count];
for (var i = 0; i < arguments.Count; i++)
{
var argument = default(SyntaxTreeNode);
if (arguments.TryGetValue(i, out argument) == false)
{
bindingError = new ExpressionParserException(Properties.Resources.EXCEPTION_BOUNDEXPR_ARGSDOESNTMATCHPARAMS, node);
return(false);
}
if (AnyBinder.TryBindInNewScope(argument, bindingContext, elementType, out argumentExpressions[i], out bindingError) == false)
{
return(false);
}
}
boundExpression = Expression.NewArrayInit(type, argumentExpressions);
return(true);
}
public static bool TryBind(SyntaxTreeNode node, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (bindingContext == null)
{
throw new ArgumentNullException("bindingContext");
}
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
boundExpression = null;
bindingError = null;
var target = default(Expression);
var targetNode = node.GetExpression(throwOnError: false);
var propertyOrFieldName = node.GetPropertyOrFieldName(throwOnError: true);
var useNullPropagation = node.GetUseNullPropagation(throwOnError: false);
var targetType = default(Type);
var isStatic = false;
if (bindingContext.TryResolveType(targetNode, out targetType))
{
target = null;
isStatic = true;
}
else if (targetNode == null)
{
target = bindingContext.Global;
targetType = target != null ? target.Type : null;
isStatic = false;
switch (propertyOrFieldName)
{
case Constants.VALUE_NULL_STRING:
boundExpression = ExpressionUtils.NullConstant;
return(true);
case Constants.VALUE_TRUE_STRING:
boundExpression = ExpressionUtils.TrueConstant;
return(true);
case Constants.VALUE_FALSE_STRING:
boundExpression = ExpressionUtils.TrueConstant;
return(false);
default:
if (bindingContext.TryGetParameter(propertyOrFieldName, out boundExpression))
{
return(true);
}
break;
}
}
else if (AnyBinder.TryBind(targetNode, bindingContext, TypeDescription.ObjectType, out target, out bindingError))
{
Debug.Assert(target != null, "target != null");
targetType = target.Type;
isStatic = false;
}
else
{
target = null;
targetType = null;
}
if (target == null && targetType == null)
{
if (bindingError == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVENAME, propertyOrFieldName), node);
}
return(false);
}
Debug.Assert(targetType != null, "type != null");
var targetTypeDescription = TypeDescription.GetTypeDescription(targetType);
if (isStatic && targetTypeDescription.IsEnum)
{
var fieldMemberDescription = targetTypeDescription.GetMembers(propertyOrFieldName).FirstOrDefault(m => m.IsStatic);
if (fieldMemberDescription == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVEMEMBERONTYPE, propertyOrFieldName, targetType), node);
return(false);
}
boundExpression = fieldMemberDescription.ConstantValueExpression;
}
else
{
foreach (var member in targetTypeDescription.GetMembers(propertyOrFieldName))
{
if (member.IsStatic != isStatic || member.IsPropertyOrField == false)
{
continue;
}
if (member.TryMakeAccessor(target, out boundExpression))
{
break;
}
}
}
if (boundExpression == null)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETORESOLVEMEMBERONTYPE, propertyOrFieldName, targetType), node);
return(false);
}
if (useNullPropagation && isStatic)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOAPPLYNULLCONDITIONALOPERATORONTYPEREF, targetType));
return(false);
}
if (useNullPropagation && targetTypeDescription.CanBeNull)
{
bindingContext.RegisterNullPropagationTarget(target);
}
return(true);
}
private static bool TryBindToMethod(SyntaxTreeNode node, object methodName, ArgumentsTree arguments, BindingContext bindingContext, TypeDescription expectedType, out Expression boundExpression, out Exception bindingError)
{
boundExpression = null;
bindingError = null;
var constructorDescription = default(MemberDescription);
if (bindingContext.TryResolveMember(methodName, out constructorDescription) == false || constructorDescription.IsConstructor == false)
{
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDCONSTRUCTOR, methodName), node);
return(false);
}
var typeDescription = TypeDescription.GetTypeDescription(constructorDescription.DeclaringType);
// feature: lambda building via new Func()
var lambdaArgument = default(SyntaxTreeNode);
if (typeDescription.IsDelegate && arguments.Count == 1 && (lambdaArgument = arguments.Values.Single()).GetExpressionType(throwOnError: true) == Constants.EXPRESSION_TYPE_LAMBDA)
{
return(LambdaBinder.TryBind(lambdaArgument, bindingContext, typeDescription, out boundExpression, out bindingError));
}
var constructorQuality = MemberDescription.QUALITY_INCOMPATIBLE;
if (constructorDescription.TryMakeCall(null, arguments, bindingContext, out boundExpression, out constructorQuality))
{
return(true);
}
bindingError = new ExpressionParserException(string.Format(Properties.Resources.EXCEPTION_BIND_UNABLETOBINDCONSTRUCTOR, constructorDescription.DeclaringType), node);
return(false);
}