public WithScope(WithScope parent, IIdentifier identifier)
{
if (identifier == null)
throw new ArgumentNullException("identifier");
Parent = parent;
Identifier = identifier;
}
public BuilderWithScope(BuilderWithScope parent, IIdentifier identifier, Scope scope)
{
Parent = parent;
WithScope = new WithScope(parent != null ? parent.WithScope : null, identifier);
Scope = scope;
}
private BoundIf BuildGetWithScope(BlockBuilder builder, WithScope withScope, IIdentifier fallback, BoundTemporary result, BoundTemporary withTarget)
{
var withLocal = builder.CreateTemporary();
builder.Add(new BoundSetVariable(
withLocal,
new BoundGetVariable(_withIdentifiers[withScope.Identifier]),
SourceLocation.Missing
));
var getter = new BlockBuilder(this);
if (withTarget != null)
{
getter.Add(new BoundSetVariable(
withTarget,
new BoundGetVariable(withLocal),
SourceLocation.Missing
));
}
getter.Add(new BoundSetVariable(
result,
BuildGetMember(
new BoundGetVariable(withLocal),
BoundConstant.Create(fallback.Name)
),
SourceLocation.Missing
));
BoundBlock @else;
if (withScope.Parent == null)
{
@else = BuildBlock(new BoundSetVariable(
result,
BuildGet(
fallback,
null
),
SourceLocation.Missing
));
}
else
{
@else = BuildBlock(BuildGetWithScope(
builder,
withScope.Parent,
fallback,
result,
withTarget
));
}
return new BoundIf(
new BoundHasMember(
new BoundGetVariable(withLocal),
fallback.Name
),
getter.BuildBlock(SourceLocation.Missing),
@else,
SourceLocation.Missing
);
}
private BoundIf BuildSetWithScope(BlockBuilder builder, WithScope withScope, IIdentifier fallback, BoundTemporary value)
{
var withLocal = builder.CreateTemporary();
builder.Add(new BoundSetVariable(
withLocal,
new BoundGetVariable(_withIdentifiers[withScope.Identifier]), SourceLocation.Missing
));
var setter = new BoundSetMember(
new BoundGetVariable(withLocal),
BoundConstant.Create(fallback.Name),
new BoundGetVariable(value),
SourceLocation.Missing
);
BoundBlock @else;
if (withScope.Parent == null)
{
@else = BuildBlock(BuildSet(
fallback,
new BoundGetVariable(value)
));
}
else
{
@else = BuildBlock(BuildSetWithScope(
builder,
withScope.Parent,
fallback,
value
));
}
return new BoundIf(
new BoundHasMember(
new BoundGetVariable(withLocal),
fallback.Name
),
BuildBlock(setter),
@else,
SourceLocation.Missing
);
}
public ScopedIdentifier(WithScope withScope, IIdentifier fallback)
{
WithScope = withScope;
Fallback = fallback;
}