| public static Coerce ( Object value, Object type ) : Object | ||
| value | Object | |
| type | Object | |
| Результат | Object | |
public override void SetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, CultureInfo culture)
{
if (this.ILField != null)
{
this.ILField.SetValue(null, value, invokeAttr, binder, culture);
return;
}
if ((this.IsLiteral || this.IsInitOnly) && !(this.value is Missing))
{
if (this.value is FunctionObject && value is FunctionObject && this.Name.Equals(((FunctionObject)value).name))
{
this.value = value;
return;
}
throw new JScriptException(JSError.AssignmentToReadOnly);
}
if (this.type != null)
{
this.value = Convert.Coerce(value, this.type);
}
else
{
this.value = value;
}
}
public override void SetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, CultureInfo locale)
{
if (this.type != null)
{
value = Convert.Coerce(value, this.type);
}
while (obj is BlockScope)
{
obj = ((BlockScope)obj).GetParent();
}
StackFrame sf = (StackFrame)obj;
JSLocalField f = this.outerField;
int slot = this.slotNumber;
while (f != null)
{
slot = f.slotNumber;
sf = (StackFrame)sf.GetParent();
f = f.outerField;
}
if (sf.localVars == null)
{
return; //happens when assigning to a constant from latebound code
}
sf.localVars[slot] = value;
}
internal override AST PartiallyEvaluate()
{
this.field.attributeFlags &= ~FieldAttributes.InitOnly;
this.identifier.PartiallyEvaluateAsReference();
if (this.field.type != null)
{
this.field.type.PartiallyEvaluate();
}
ScriptObject scope = (ScriptObject)Globals.ScopeStack.Peek();
if (this.value != null)
{
this.value = this.value.PartiallyEvaluate();
this.identifier.SetPartialValue(this.value);
if (this.value is ConstantWrapper)
{
Object val = this.field.value = this.value.Evaluate();
if (this.field.type != null)
{
this.field.value = Convert.Coerce(val, this.field.type, true);
}
if (this.field.IsStatic && (val is Type || val is ClassScope || val is TypedArray ||
Convert.GetTypeCode(val) != TypeCode.Object))
{
this.field.attributeFlags |= FieldAttributes.Literal;
goto set_field_type;
}
}
this.field.attributeFlags |= FieldAttributes.InitOnly;
set_field_type:
if (this.field.type == null)
{
this.field.type = new TypeExpression(new ConstantWrapper(this.value.InferType(null), null));
}
}
else
{
this.value = new ConstantWrapper(null, this.context);
this.field.attributeFlags |= FieldAttributes.InitOnly;
}
// deal with custom attributes
if (this.field != null && this.field.customAttributes != null)
{
this.field.customAttributes.PartiallyEvaluate();
}
return(this);
}
private void SetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, CultureInfo locale, ScriptObject scope)
{
if (this.IsStatic || this.IsLiteral)
{
if ((this.IsLiteral || this.IsInitOnly) && !(this.value is Missing))
{
throw new JScriptException(JSError.AssignmentToReadOnly);
}
goto setValue;
}
if (this.obj != obj)
{
if (obj is JSObject)
{
FieldInfo field = ((JSObject)obj).GetField(this.Name, BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
if (field != null)
{
field.SetValue(obj, value, invokeAttr, binder, locale);
return;
}
}
throw new TargetException();
}
if (!this.IsPublic && (scope == null || !this.IsAccessibleFrom(scope)))
{
if (((JSObject)this.obj).noExpando)
{
throw new JScriptException(JSError.NotAccessible, new Context(new DocumentContext("", null), this.Name));
}
else
{
this.expandoValue = value;
}
return;
}
setValue:
if (this.type != null)
{
this.value = Convert.Coerce(value, this.type);
}
else
{
this.value = value;
}
}
internal override Object Evaluate()
{
ConstructorInfo c = (ConstructorInfo)((Binding)this.ctor).member;
ParameterInfo[] pars = c.GetParameters();
int pn = pars.Length;
for (int i = positionalArgValues.Count; i < pn; i++)
{
positionalArgValues.Add(Convert.CoerceT(null, pars[i].ParameterType));
}
Object[] pArgVals = new Object[pn]; positionalArgValues.CopyTo(0, pArgVals, 0, pn);
Object ca = c.Invoke(BindingFlags.ExactBinding, null, pArgVals, null);
for (int i = 0, n = this.namedArgProperties.Count; i < n; i++)
{
JSProperty prop = this.namedArgProperties[i] as JSProperty;
if (prop != null)
{
prop.SetValue(ca, Convert.Coerce(this.namedArgPropertyValues[i], prop.PropertyIR()), null);
}
else
{
((PropertyInfo)this.namedArgProperties[i]).SetValue(ca, this.namedArgPropertyValues[i], null);
}
}
for (int i = 0, n = this.namedArgFields.Count; i < n; i++)
{
JSVariableField field = this.namedArgFields[i] as JSVariableField;
if (field != null)
{
field.SetValue(ca, Convert.Coerce(this.namedArgFieldValues[i], field.GetInferredType(null)));
}
else
{
((FieldInfo)this.namedArgFields[i]).SetValue(ca, this.namedArgFieldValues[i]);
}
}
return(ca);
}
internal override Object Evaluate()
{
ScriptObject scope = Globals.ScopeStack.Peek();
Object value = null;
if (this.initializer != null)
{
value = this.initializer.Evaluate();
}
if (this.type != null)
{
value = Convert.Coerce(value, this.type);
}
else
{
while (scope is BlockScope)
{
scope = scope.GetParent();
}
if (scope is WithObject)
{
this.identifier.SetWithValue((WithObject)scope, value);
}
while (scope is WithObject || scope is BlockScope)
{
scope = scope.GetParent();
}
if (this.initializer == null && !(this.field.value is Missing))
{
this.completion.value = this.field.value;
return(this.completion);
}
}
this.field.SetValue(scope, this.completion.value = value);
return(this.completion);
}
internal override AST PartiallyEvaluate()
{
this.ctor = this.ctor.PartiallyEvaluateAsCallable();
//first weed out assignment expressions and use them as property initializers
ASTList positionalArgs = new ASTList(this.args.context);
ASTList namedArgs = new ASTList(this.args.context);
for (int i = 0, m = this.args.count; i < m; i++)
{
AST arg = this.args[i];
Assign assign = arg as Assign;
if (assign != null)
{
assign.rhside = assign.rhside.PartiallyEvaluate();
namedArgs.Append(assign);
}
else
{
positionalArgs.Append(arg.PartiallyEvaluate());
}
}
int n = positionalArgs.count;
IReflect[] argIRs = new IReflect[n];
for (int i = 0; i < n; i++)
{
AST arg = positionalArgs[i];
// only accept ConstantWrappers
if (arg is ConstantWrapper)
{
Object argument = arg.Evaluate();
if ((argIRs[i] = CustomAttribute.TypeOfArgument(argument)) != null)
{
this.positionalArgValues.Add(argument);
continue;
}
}
else if (arg is ArrayLiteral && ((ArrayLiteral)arg).IsOkToUseInCustomAttribute())
{
argIRs[i] = Typeob.ArrayObject;
this.positionalArgValues.Add(arg.Evaluate());
continue;
}
arg.context.HandleError(JSError.InvalidCustomAttributeArgument);
return(null); // the custom attribute is not good and it will be ignored
}
//Get the custom attribute and the appropriate constructor (under the covers)
this.type = this.ctor.ResolveCustomAttribute(positionalArgs, argIRs, this.target);
if (this.type == null)
{
return(null);
}
if (Convert.IsPromotableTo((IReflect)this.type, typeof(CodeAccessSecurityAttribute)))
{
this.context.HandleError(JSError.CannotUseStaticSecurityAttribute);
return(null);
}
//Coerce the positional arguments to the right type and supply default values for optional parameters
ConstructorInfo c = (ConstructorInfo)((Binding)this.ctor).member;
ParameterInfo[] parameters = c.GetParameters();
int j = 0;
int len = this.positionalArgValues.Count;
foreach (ParameterInfo p in parameters)
{
IReflect ir = p is ParameterDeclaration ? ((ParameterDeclaration)p).ParameterIReflect : p.ParameterType;
if (j < len)
{
Object value = this.positionalArgValues[j];
this.positionalArgValues[j] = Convert.Coerce(value, ir, value is ArrayObject);
j++;
}
else
{
Object value;
if (p.DefaultValue == System.Convert.DBNull)
{
value = Convert.Coerce(null, ir);
}
else
{
value = p.DefaultValue;
}
this.positionalArgValues.Add(value);
}
}
//Check validity of property/field initializers
for (int i = 0, m = namedArgs.count; i < m; i++)
{
Assign assign = (Assign)namedArgs[i];
if (assign.lhside is Lookup &&
(assign.rhside is ConstantWrapper ||
(assign.rhside is ArrayLiteral && ((ArrayLiteral)assign.rhside).IsOkToUseInCustomAttribute())))
{
Object value = assign.rhside.Evaluate();
IReflect argType = null;
if (value is ArrayObject || ((argType = CustomAttribute.TypeOfArgument(value)) != null && argType != Typeob.Object))
{
String name = ((Lookup)assign.lhside).Name;
MemberInfo [] members = ((IReflect)this.type).GetMember(name, BindingFlags.Public | BindingFlags.Instance);
if (members == null || members.Length == 0)
{
assign.context.HandleError(JSError.NoSuchMember);
return(null);
}
if (members.Length == 1)
{
MemberInfo member = members[0];
if (member is FieldInfo)
{
FieldInfo fieldInfo = (FieldInfo)member;
if (!fieldInfo.IsLiteral && !fieldInfo.IsInitOnly)
{
try{
IReflect ir = fieldInfo is JSVariableField ? ((JSVariableField)fieldInfo).GetInferredType(null) : fieldInfo.FieldType;
value = Convert.Coerce(value, ir, value is ArrayObject);
this.namedArgFields.Add(member);
this.namedArgFieldValues.Add(value);
continue;
}catch (JScriptException) {
assign.rhside.context.HandleError(JSError.TypeMismatch);
return(null); // the custom attribute is not good and it will be ignored
}
}
}
else if (member is PropertyInfo)
{
PropertyInfo propertyInfo = (PropertyInfo)member;
MethodInfo setMethodInfo = JSProperty.GetSetMethod(propertyInfo, false);
if (setMethodInfo != null)
{
ParameterInfo [] paramInfo = setMethodInfo.GetParameters();
if (paramInfo != null && paramInfo.Length == 1)
{
try{
IReflect ir = paramInfo[0] is ParameterDeclaration ? ((ParameterDeclaration)paramInfo[0]).ParameterIReflect : paramInfo[0].ParameterType;
value = Convert.Coerce(value, ir, value is ArrayObject);
this.namedArgProperties.Add(member);
this.namedArgPropertyValues.Add(value);
}catch (JScriptException) {
assign.rhside.context.HandleError(JSError.TypeMismatch);
return(null); // the custom attribute is not good and it will be ignored
}
continue;
}
}
}
}
}
}
assign.context.HandleError(JSError.InvalidCustomAttributeArgument);
return(null);
}
if (!this.CheckIfTargetOK(this.type))
{
return(null); //Ignore attribute
}
//Consume and discard assembly name attributes
try{
Type ty = this.type as Type;
if (ty != null && this.target is AssemblyCustomAttributeList)
{
if (ty.FullName == "System.Reflection.AssemblyAlgorithmIdAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyHashAlgorithm = (AssemblyHashAlgorithm)Convert.CoerceT(this.positionalArgValues[0], typeof(AssemblyHashAlgorithm));
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyCultureAttribute")
{
if (this.positionalArgValues.Count > 0)
{
String cultureId = Convert.ToString(this.positionalArgValues[0]);
if (this.Engine.PEFileKind != PEFileKinds.Dll && cultureId.Length > 0)
{
this.context.HandleError(JSError.ExecutablesCannotBeLocalized);
return(null);
}
this.Engine.Globals.assemblyCulture = new CultureInfo(cultureId);
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyDelaySignAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyDelaySign = Convert.ToBoolean(this.positionalArgValues[0], false);
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyFlagsAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyFlags = (AssemblyFlags)(uint)Convert.CoerceT(this.positionalArgValues[0], typeof(uint));
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyKeyFileAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyKeyFileName = Convert.ToString(this.positionalArgValues[0]);
if (this.Engine.Globals.assemblyKeyFileName != null && this.Engine.Globals.assemblyKeyFileName.Length == 0)
{
this.Engine.Globals.assemblyKeyFileName = null;
}
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyKeyNameAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyKeyName = Convert.ToString(this.positionalArgValues[0]);
if (this.Engine.Globals.assemblyKeyName != null && this.Engine.Globals.assemblyKeyName.Length == 0)
{
this.Engine.Globals.assemblyKeyName = null;
}
}
return(null);
}
if (ty.FullName == "System.Reflection.AssemblyVersionAttribute")
{
if (this.positionalArgValues.Count > 0)
{
this.Engine.Globals.assemblyVersion = this.ParseVersion(Convert.ToString(this.positionalArgValues[0]));
}
return(null);
}
if (ty.FullName == "System.CLSCompliantAttribute")
{
this.Engine.isCLSCompliant = this.args == null || this.args.count == 0 || Convert.ToBoolean(this.positionalArgValues[0], false);
return(this);
}
}
}catch (ArgumentException) {
this.context.HandleError(JSError.InvalidCall);
}
return(this);
}