| public AddObjectTypeRestriction ( object value, Expression expression ) : void | ||
| value | object | |
| expression | Expression | |
| return | void | |
protected override bool Build(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args, bool defaultFallback) {
if (TryImplicitConversion(metaBuilder, args)) {
metaBuilder.AddObjectTypeRestriction(args.Target, args.TargetExpression);
return true;
}
// TODO: this is our meta object, should we add IRubyMetaConvertible interface instead of using interop-binder?
if (args.Target is IDynamicMetaObjectProvider) {
metaBuilder.SetMetaResult(args.MetaTarget.BindConvert(new InteropBinder.Convert(args.RubyContext, _type, true)), false);
return true;
}
if (defaultFallback) {
metaBuilder.AddObjectTypeRestriction(args.Target, args.TargetExpression);
metaBuilder.SetError(Methods.MakeTypeConversionError.OpCall(
args.MetaContext.Expression,
AstUtils.Convert(args.TargetExpression, typeof(object)),
Ast.Constant(_type)
));
return true;
}
return false;
}
internal static bool BuildConversion(MetaObjectBuilder/*!*/ metaBuilder, DynamicMetaObject/*!*/ target, Expression/*!*/ contextExpression,
Type/*!*/ toType, bool defaultFallback) {
Expression expr = TryImplicitConversion(target, toType);
if (expr != null) {
metaBuilder.Result = expr;
metaBuilder.AddObjectTypeRestriction(target.Value, target.Expression);
return true;
}
if (defaultFallback) {
metaBuilder.AddObjectTypeRestriction(target.Value, target.Expression);
metaBuilder.SetError(Methods.MakeTypeConversionError.OpCall(
contextExpression,
AstUtils.Convert(target.Expression, typeof(object)),
Ast.Constant(toType)
));
return true;
}
return false;
}
public static Expression[]/*!*/ MakeActualArgs(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args,
bool includeSelf, bool selfIsInstance, bool calleeHasBlockParam, bool injectMissingBlockParam) {
var actualArgs = new List<Expression>(args.ExplicitArgumentCount);
// self (instance):
if (includeSelf && selfIsInstance) {
// test already added by method resolver
Debug.Assert(args.TargetExpression != null);
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
Proc block = null;
Expression blockExpression = null;
// block test - we need to test for a block regardless of whether it is actually passed to the method or not
// since the information that the block is not null is used for overload resolution.
if (args.Signature.HasBlock) {
block = args.GetBlock();
blockExpression = args.GetBlockExpression();
if (block == null) {
metaBuilder.AddRestriction(Ast.Equal(blockExpression, Ast.Constant(null)));
} else {
// don't need to test the exact type of the Proc since the code is subclass agnostic:
metaBuilder.AddRestriction(Ast.NotEqual(blockExpression, Ast.Constant(null)));
}
}
// block:
if (calleeHasBlockParam) {
if (args.Signature.HasBlock) {
if (block == null) {
// the user explicitly passed nil as a block arg:
actualArgs.Add(Ast.Constant(null));
} else {
// pass BlockParam:
Debug.Assert(metaBuilder.BfcVariable != null);
actualArgs.Add(metaBuilder.BfcVariable);
}
} else {
// no block passed into a method with a BlockParam:
actualArgs.Add(Ast.Constant(null));
}
} else if (injectMissingBlockParam) {
// no block passed into a method w/o a BlockParam (we still need to fill the missing block argument):
actualArgs.Add(Ast.Constant(null));
}
// self (non-instance):
if (includeSelf && !selfIsInstance) {
// test already added by method resolver
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
// simple arguments:
for (int i = 0; i < args.SimpleArgumentCount; i++) {
var value = args.GetSimpleArgument(i);
var expr = args.GetSimpleArgumentExpression(i);
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
// splat argument:
int listLength;
ParameterExpression listVariable;
if (args.Signature.HasSplattedArgument) {
object splattedArg = args.GetSplattedArgument();
Expression splattedArgExpression = args.GetSplattedArgumentExpression();
if (metaBuilder.AddSplattedArgumentTest(splattedArg, splattedArgExpression, out listLength, out listVariable)) {
// AddTestForListArg only returns 'true' if the argument is a List<object>
var list = (List<object>)splattedArg;
// get arguments, add tests
for (int j = 0; j < listLength; j++) {
var value = list[j];
var expr = Ast.Call(listVariable, typeof(List<object>).GetMethod("get_Item"), Ast.Constant(j));
metaBuilder.AddObjectTypeCondition(value, expr);
AddArgument(actualArgs, value, expr);
}
} else {
// argument is not an array => add the argument itself:
AddArgument(actualArgs, splattedArg, splattedArgExpression);
}
}
// rhs argument:
if (args.Signature.HasRhsArgument) {
var value = args.GetRhsArgument();
var expr = args.GetRhsArgumentExpression();
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
return actualArgs.ToArray();
}
public static Expression[] /*!*/ MakeActualArgs(MetaObjectBuilder /*!*/ metaBuilder, CallArguments /*!*/ args,
bool includeSelf, bool selfIsInstance, bool calleeHasBlockParam, bool injectMissingBlockParam)
{
var actualArgs = new List <Expression>(args.ExplicitArgumentCount);
// self (instance):
if (includeSelf && selfIsInstance)
{
// test already added by method resolver
Debug.Assert(args.TargetExpression != null);
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
Proc block = null;
Expression blockExpression = null;
// block test - we need to test for a block regardless of whether it is actually passed to the method or not
// since the information that the block is not null is used for overload resolution.
if (args.Signature.HasBlock)
{
block = args.GetBlock();
blockExpression = args.GetBlockExpression();
if (block == null)
{
metaBuilder.AddRestriction(Ast.Equal(blockExpression, Ast.Constant(null)));
}
else
{
// don't need to test the exact type of the Proc since the code is subclass agnostic:
metaBuilder.AddRestriction(Ast.NotEqual(blockExpression, Ast.Constant(null)));
}
}
// block:
if (calleeHasBlockParam)
{
if (args.Signature.HasBlock)
{
if (block == null)
{
// the user explicitly passed nil as a block arg:
actualArgs.Add(Ast.Constant(null));
}
else
{
// pass BlockParam:
Debug.Assert(metaBuilder.BfcVariable != null);
actualArgs.Add(metaBuilder.BfcVariable);
}
}
else
{
// no block passed into a method with a BlockParam:
actualArgs.Add(Ast.Constant(null));
}
}
else if (injectMissingBlockParam)
{
// no block passed into a method w/o a BlockParam (we still need to fill the missing block argument):
actualArgs.Add(Ast.Constant(null));
}
// self (non-instance):
if (includeSelf && !selfIsInstance)
{
// test already added by method resolver
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
// simple arguments:
for (int i = 0; i < args.SimpleArgumentCount; i++)
{
var value = args.GetSimpleArgument(i);
var expr = args.GetSimpleArgumentExpression(i);
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
// splat argument:
int listLength;
ParameterExpression listVariable;
if (args.Signature.HasSplattedArgument)
{
object splattedArg = args.GetSplattedArgument();
Expression splattedArgExpression = args.GetSplattedArgumentExpression();
if (metaBuilder.AddSplattedArgumentTest(splattedArg, splattedArgExpression, out listLength, out listVariable))
{
// AddTestForListArg only returns 'true' if the argument is a List<object>
var list = (List <object>)splattedArg;
// get arguments, add tests
for (int j = 0; j < listLength; j++)
{
var value = list[j];
var expr = Ast.Call(listVariable, typeof(List <object>).GetMethod("get_Item"), Ast.Constant(j));
metaBuilder.AddObjectTypeCondition(value, expr);
AddArgument(actualArgs, value, expr);
}
}
else
{
// argument is not an array => add the argument itself:
AddArgument(actualArgs, splattedArg, splattedArgExpression);
}
}
// rhs argument:
if (args.Signature.HasRhsArgument)
{
var value = args.GetRhsArgument();
var expr = args.GetRhsArgumentExpression();
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
return(actualArgs.ToArray());
}
// TODO: OBSOLETE
private static Expression[]/*!*/ MakeActualArgs(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args,
SelfCallConvention callConvention, bool calleeHasBlockParam, bool injectMissingBlockParam) {
var actualArgs = new List<Expression>();
// self (instance):
if (callConvention == SelfCallConvention.SelfIsInstance) {
// test already added by method resolver
Debug.Assert(args.TargetExpression != null);
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
// block:
if (calleeHasBlockParam) {
if (args.Signature.HasBlock) {
if (args.GetBlock() == null) {
// the user explicitly passed nil as a block arg:
actualArgs.Add(AstUtils.Constant(null));
} else {
// pass BlockParam:
Debug.Assert(metaBuilder.BfcVariable != null);
actualArgs.Add(metaBuilder.BfcVariable);
}
} else {
// no block passed into a method with a BlockParam:
actualArgs.Add(AstUtils.Constant(null));
}
} else if (injectMissingBlockParam) {
// no block passed into a method w/o a BlockParam (we still need to fill the missing block argument):
actualArgs.Add(AstUtils.Constant(null));
}
// self (non-instance):
if (callConvention == SelfCallConvention.SelfIsParameter) {
// test already added by method resolver
AddArgument(actualArgs, args.Target, args.TargetExpression);
}
// simple arguments:
for (int i = 0; i < args.SimpleArgumentCount; i++) {
var value = args.GetSimpleArgument(i);
var expr = args.GetSimpleArgumentExpression(i);
// TODO: overload-resolution restrictions
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
// splat argument:
int listLength;
ParameterExpression listVariable;
if (args.Signature.HasSplattedArgument) {
object splattedArg = args.GetSplattedArgument();
Expression splattedArgExpression = args.GetSplattedArgumentExpression();
if (metaBuilder.AddSplattedArgumentTest(splattedArg, splattedArgExpression, out listLength, out listVariable)) {
// AddTestForListArg only returns 'true' if the argument is a List<object>
var list = (List<object>)splattedArg;
// get arguments, add tests
for (int j = 0; j < listLength; j++) {
var value = list[j];
var expr = Ast.Call(listVariable, typeof(List<object>).GetMethod("get_Item"), AstUtils.Constant(j));
// TODO: overload-resolution restrictions
metaBuilder.AddObjectTypeCondition(value, expr);
AddArgument(actualArgs, value, expr);
}
} else {
// argument is not an array => add the argument itself:
AddArgument(actualArgs, splattedArg, splattedArgExpression);
}
}
// rhs argument:
if (args.Signature.HasRhsArgument) {
var value = args.GetRhsArgument();
var expr = args.GetRhsArgumentExpression();
// TODO: overload-resolution restrictions
metaBuilder.AddObjectTypeRestriction(value, expr);
AddArgument(actualArgs, value, expr);
}
return actualArgs.ToArray();
}