|
static private MakeCallWithBlockRetryable ( |
||
| gen | ||
| invoke | System.Linq.Expressions | |
| blockArgVariable | System.Linq.Expressions | |
| transformedBlock | System.Linq.Expressions | |
| isBlockDefinition | bool | |
| 리턴 | ||
internal override MSA.Expression /*!*/ TransformRead(AstGenerator /*!*/ gen)
{
if (gen.CurrentMethod.IsTopLevelCode && gen.CurrentBlock == null && !gen.CompilerOptions.IsEval)
{
return(Ast.Throw(Methods.MakeTopLevelSuperException.OpCall()));
}
// invoke super member action:
CallBuilder callBuilder = new CallBuilder(gen);
// self:
callBuilder.Instance = gen.CurrentSelfVariable;
// arguments:
if (Arguments != null)
{
Arguments.TransformToCall(gen, callBuilder);
}
else
{
// copy parameters from the method:
// TODO: parameters in top-level eval
LexicalScope.TransformParametersToSuperCall(gen, callBuilder, gen.CurrentMethod.Parameters);
}
// block:
MSA.Expression transformedBlock;
if (Block != null)
{
transformedBlock = Block.Transform(gen);
}
else
{
transformedBlock = gen.MakeMethodBlockParameterRead();
}
// variable assigned to the transformed block in MakeCallWithBlockRetryable:
MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#super-call-block", typeof(Proc));
callBuilder.Block = blockArgVariable;
// TODO: this could be improved, currently the right method name and declaring module is always searched for at run-time (at the site):
return(gen.DebugMark(
MethodCall.MakeCallWithBlockRetryable(gen,
callBuilder.MakeSuperCallAction(gen.CurrentFrame.UniqueId),
blockArgVariable,
transformedBlock,
Block != null && Block.IsDefinition
),
"#RB: super call ('" + gen.CurrentMethod.MethodName + "')"
));
}
internal override MSA.Expression /*!*/ TransformRead(AstGenerator /*!*/ gen)
{
Assert.NotNull(gen);
MSA.Expression transformedBlock = _block.Transform(gen);
MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#forloop-block", typeof(Proc));
MSA.Expression result = CallSiteBuilder.InvokeMethod(gen.Context, "each", RubyCallSignature.WithScopeAndBlock(0),
gen.CurrentScopeVariable,
_list.TransformRead(gen),
blockArgVariable
);
return(gen.DebugMark(MethodCall.MakeCallWithBlockRetryable(gen, result, blockArgVariable, transformedBlock, true),
"#RB: method call with a block ('for-loop')"));
}
internal override MSA.Expression /*!*/ TransformRead(AstGenerator /*!*/ gen)
{
// variable assigned to the transformed block in MakeCallWithBlockRetryable:
MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#super-call-block", typeof(Proc));
// invoke super member action:
var siteBuilder = new CallSiteBuilder(gen, gen.CurrentSelfVariable, blockArgVariable);
// arguments:
if (HasImplicitArguments)
{
// MRI 1.8: If a block is called via define_method stub its parameters are used here.
// MRI 1.9: This scenario is not supported.
// We don't support this either. Otherwise we would need to emit super call with dynamic parameters if gen.CurrentBlock != null.
if (gen.CurrentMethod.Parameters != null)
{
gen.CurrentMethod.Parameters.TransformForSuperCall(gen, siteBuilder);
}
else if (gen.CompilerOptions.TopLevelParameterNames != null)
{
bool hasUnsplat = gen.CompilerOptions.TopLevelHasUnsplatParameter;
string[] names = gen.CompilerOptions.TopLevelParameterNames;
// dynamic lookup:
for (int i = 0; i < names.Length - (hasUnsplat ? 1 : 0); i++)
{
siteBuilder.Add(Methods.GetLocalVariable.OpCall(gen.CurrentScopeVariable, AstUtils.Constant(names[i])));
}
if (hasUnsplat)
{
siteBuilder.SplattedArgument =
Methods.GetLocalVariable.OpCall(gen.CurrentScopeVariable, AstUtils.Constant(names[names.Length - 1]));
}
}
else
{
// this means we are not inside any method scope -> an exception will be thrown at the call site
}
}
else
{
Arguments.TransformToCall(gen, siteBuilder);
}
// block:
MSA.Expression transformedBlock;
if (Block != null)
{
transformedBlock = Block.Transform(gen);
}
else
{
transformedBlock = gen.MakeMethodBlockParameterRead();
}
return(gen.DebugMark(
MethodCall.MakeCallWithBlockRetryable(gen,
siteBuilder.MakeSuperCallAction(gen.CurrentFrame.UniqueId, HasImplicitArguments),
blockArgVariable,
transformedBlock,
Block != null && Block.IsDefinition
),
"#RB: super call ('" + gen.CurrentMethod.MethodName + "')"
));
}