| private InferType ( JSField inference_target ) : IReflect | ||
| inference_target | JSField | |
| Результат | IReflect | |
internal override void SetPartialValue(AST partial_value)
{
//ResolveLHValue has already been called and has already checked if the target is accessible and assignable
if (this.members == null || this.members.Length == 0)
{
return; //Assignment to an undeclared variable. Nothing further to do.
}
if (this.member is JSLocalField)
{
//If we are dealing with an assignment to an untyped local variable, we need to tell the type inferencer about the assignment
JSLocalField lfield = (JSLocalField)this.member;
if (lfield.type == null)
{
IReflect ir = partial_value.InferType(lfield);
if (ir == Typeob.String && partial_value is Plus)
{
lfield.SetInferredType(Typeob.Object, partial_value);
}
else
{
lfield.SetInferredType(ir, partial_value);
}
//but then we are done
return;
}
lfield.isDefined = true;
}
Binding.AssignmentCompatible(this.InferType(null), partial_value, partial_value.InferType(null), this.isFullyResolved);
}
internal CallableExpression(AST expression)
: base(expression.context, ""){
this.expression = expression;
JSLocalField field = new JSLocalField("", null, 0, Missing.Value);
this.expressionInferredType = expression.InferType(field);
field.inferred_type = this.expressionInferredType;
this.member = field;
this.members = new MemberInfo[]{field};
}
internal CallableExpression(AST expression) : base(expression.context, "")
{
this.expression = expression;
JSLocalField field = new JSLocalField("", null, 0, Microsoft.JScript.Missing.Value);
this.expressionInferredType = expression.InferType(field);
field.inferred_type = this.expressionInferredType;
base.member = field;
base.members = new MemberInfo[] { field };
}
internal override void SetPartialValue(AST partial_value)
{
if ((base.members != null) && (base.members.Length != 0))
{
if (base.member is JSLocalField)
{
JSLocalField member = (JSLocalField)base.member;
if (member.type == null)
{
IReflect ir = partial_value.InferType(member);
if ((ir == Typeob.String) && (partial_value is Plus))
{
member.SetInferredType(Typeob.Object, partial_value);
return;
}
member.SetInferredType(ir, partial_value);
return;
}
member.isDefined = true;
}
Binding.AssignmentCompatible(this.InferType(null), partial_value, partial_value.InferType(null), base.isFullyResolved);
}
}
internal override void TranslateToIL(ILGenerator il, Type rtype)
{
if (this.context.document.debugOn)
{
il.Emit(OpCodes.Nop);
}
ASTList astList = this.operand;
int n = astList.count;
for (int i = 0; i < n; i++)
{
AST ast = astList[i];
IReflect ir = ast.InferType(null);
if (ir == Typeob.String)
{
ast.TranslateToIL(il, Typeob.String);
}
else
{
ast.TranslateToIL(il, Typeob.Object);
ConstantWrapper.TranslateToILInt(il, 1);
il.Emit(OpCodes.Call, CompilerGlobals.toStringMethod);
}
if (i == n - 1)
{
il.Emit(OpCodes.Call, CompilerGlobals.writeLineMethod);
}
else
{
il.Emit(OpCodes.Call, CompilerGlobals.writeMethod);
}
}
if (n == 0)
{
il.Emit(OpCodes.Ldstr, "");
il.Emit(OpCodes.Call, CompilerGlobals.writeLineMethod);
}
if (rtype != Typeob.Void)
{
il.Emit(OpCodes.Ldsfld, CompilerGlobals.undefinedField);
Convert.Emit(this, il, Typeob.Object, rtype);
}
}
internal override void TranslateToIL(ILGenerator il, Type rtype)
{
if (base.context.document.debugOn)
{
il.Emit(OpCodes.Nop);
}
ASTList operand = this.operand;
int count = operand.count;
for (int i = 0; i < count; i++)
{
AST ast = operand[i];
if (ast.InferType(null) == Typeob.String)
{
ast.TranslateToIL(il, Typeob.String);
}
else
{
ast.TranslateToIL(il, Typeob.Object);
ConstantWrapper.TranslateToILInt(il, 1);
il.Emit(OpCodes.Call, CompilerGlobals.toStringMethod);
}
if (i == (count - 1))
{
il.Emit(OpCodes.Call, CompilerGlobals.writeLineMethod);
}
else
{
il.Emit(OpCodes.Call, CompilerGlobals.writeMethod);
}
}
if (count == 0)
{
il.Emit(OpCodes.Ldstr, "");
il.Emit(OpCodes.Call, CompilerGlobals.writeLineMethod);
}
if (rtype != Typeob.Void)
{
il.Emit(OpCodes.Ldsfld, CompilerGlobals.undefinedField);
Microsoft.JScript.Convert.Emit(this, il, Typeob.Object, rtype);
}
}
private IReflect[] ArgIRs()
{
int count = this.args.count;
IReflect[] reflectArray = new IReflect[count];
for (int i = 0; i < count; i++)
{
AST ast = this.args[i];
IReflect ir = reflectArray[i] = ast.InferType(null);
if (ast is AddressOf)
{
if (ir is ClassScope)
{
ir = ((ClassScope)ir).GetBakedSuperType();
}
reflectArray[i] = Microsoft.JScript.Convert.ToType("&", Microsoft.JScript.Convert.ToType(ir));
}
}
return(reflectArray);
}
private IReflect[] ArgIRs()
{
int n = this.args.count;
IReflect[] argIRs = new IReflect[n];
for (int i = 0; i < n; i++)
{
AST arg = this.args[i];
IReflect ir = argIRs[i] = arg.InferType(null);
if (arg is AddressOf)
{
if (ir is ClassScope)
{
ir = ((ClassScope)ir).GetBakedSuperType(); //this should change if ever JS can declare out params
}
argIRs[i] = Convert.ToType("&", Convert.ToType(ir));
}
}
return(argIRs);
}
internal override void SetPartialValue(AST partial_value){
//ResolveLHValue has already been called and has already checked if the target is accessible and assignable
if (this.members == null || this.members.Length == 0) return; //Assignment to an undeclared variable. Nothing further to do.
if (this.member is JSLocalField){
//If we are dealing with an assignment to an untyped local variable, we need to tell the type inferencer about the assignment
JSLocalField lfield = (JSLocalField)this.member;
if (lfield.type == null){
IReflect ir = partial_value.InferType(lfield);
if (ir == Typeob.String && partial_value is Plus)
lfield.SetInferredType(Typeob.Object, partial_value);
else
lfield.SetInferredType(ir, partial_value);
//but then we are done
return;
}
lfield.isDefined = true;
}
Binding.AssignmentCompatible(this.InferType(null), partial_value, partial_value.InferType(null), this.isFullyResolved);
}
internal void SetPartialValue(ASTList argList, IReflect[] argIRs, AST partial_value, bool inBrackets){
if (this.members == null || this.members.Length == 0){
this.HandleNoSuchMemberError();
this.isAssignmentToDefaultIndexedProperty = true;
return; //Have to do a runtime lookup
}
this.PartiallyEvaluate(); //The rhside value of the binding delivers the object with the default indexed property we are assigning to
IReflect ir = this.InferType(null);
this.isAssignmentToDefaultIndexedProperty = true;
if (ir == Typeob.Object){
JSVariableField jsvf = this.member as JSVariableField;
if (jsvf == null || !jsvf.IsLiteral || !(jsvf.value is ClassScope))
return; //Not enough is known at compile time to give an error
ir = Typeob.Type;
goto giveError;
}
//Might be an assignment to an array element
if ((ir is TypedArray || (ir is Type && ((Type)ir).IsArray))){
bool gaveAnError = false;
//Check dimension
int n = argIRs.Length;
int m = ir is TypedArray ? ((TypedArray)ir).rank : ((Type)ir).GetArrayRank();
if (n != m){
this.context.HandleError(JSError.IncorrectNumberOfIndices, this.isFullyResolved);
gaveAnError = true;
}
//Check type of indices
for (int i = 0; i < m; i++){
if (!gaveAnError && i < n && argIRs[i] != Typeob.Object &&
(!Convert.IsPrimitiveNumericType(argIRs[i]) || Convert.IsBadIndex(argList[i]))){
argList[i].context.HandleError(JSError.TypeMismatch, this.isFullyResolved);
gaveAnError = true;
}
}
this.isArrayElementAccess = true;
this.isAssignmentToDefaultIndexedProperty = false;
this.defaultMember = member;
this.defaultMemberReturnIR = ir;
IReflect elemIR = ir is TypedArray ? ((TypedArray)ir).elementType : ((Type)ir).GetElementType();
Binding.AssignmentCompatible(elemIR, partial_value, partial_value.InferType(null), this.isFullyResolved);
return;
}
MemberInfo[] defaultMembers = JSBinder.GetDefaultMembers(ir);
if (defaultMembers != null && defaultMembers.Length > 0 && this.member != null){
try{
PropertyInfo prop = JSBinder.SelectProperty(defaultMembers, argIRs);
if (prop == null){
this.context.HandleError(JSError.NotIndexable, Convert.ToTypeName(ir));
return;
}
if (JSProperty.GetSetMethod(prop, true) == null){
if (ir == Typeob.String)
this.context.HandleError(JSError.UselessAssignment);
else
this.context.HandleError(JSError.AssignmentToReadOnly, this.isFullyResolved&&this.Engine.doFast);
return;
}
if (!Binding.CheckParameters(prop.GetIndexParameters(), argIRs, argList, this.context, 0, false, true)){
return;
}
this.defaultMember = this.member;
this.defaultMemberReturnIR = ir;
this.members = defaultMembers;
this.member = prop;
}catch(AmbiguousMatchException){
this.context.HandleError(JSError.AmbiguousMatch, this.isFullyResolved);
this.member = null;
}
return;
}
giveError:
this.member = null;
if (!inBrackets)
this.context.HandleError(JSError.IllegalAssignment);
else
this.context.HandleError(JSError.NotIndexable, Convert.ToTypeName(ir));
}
internal override void SetPartialValue(AST partial_value){
Binding.AssignmentCompatible(this.InferType(null), partial_value, partial_value.InferType(null), this.isFullyResolved);
}
