public static void UnpackEnumerable(BooCodeBuilder codeBuilder, Method method, Block block, Expression expression, DeclarationCollection declarations)
{
TypeSystemServices tss = codeBuilder.TypeSystemServices;
InternalLocal local = codeBuilder.DeclareTempLocal(method,
tss.IEnumeratorType);
IType expressionType = expression.ExpressionType;
if (expressionType.IsSubclassOf(codeBuilder.TypeSystemServices.IEnumeratorType))
{
block.Add(
codeBuilder.CreateAssignment(
codeBuilder.CreateReference(local),
expression));
}
else
{
if (!expressionType.IsSubclassOf(codeBuilder.TypeSystemServices.IEnumerableType))
{
expression = codeBuilder.CreateMethodInvocation(
RuntimeServices_GetEnumerable, expression);
}
block.Add(
codeBuilder.CreateAssignment(
block.LexicalInfo,
codeBuilder.CreateReference(local),
codeBuilder.CreateMethodInvocation(
expression, IEnumerable_GetEnumerator)));
}
for (int i = 0; i < declarations.Count; ++i)
{
Declaration declaration = declarations[i];
block.Add(
codeBuilder.CreateAssignment(
codeBuilder.CreateReference(declaration.Entity),
codeBuilder.CreateMethodInvocation(RuntimeServices_MoveNext,
codeBuilder.CreateReference(local))));
}
}
Method CreateMethodAccessor(IMethod member)
{
BooCodeBuilder builder = _context.CodeBuilder;
Method method = builder.CreateMethodFromPrototype(LexicalInfo.Empty, member, TypeMemberModifiers.None);
method.Name = "___" + member.Name;
MethodInvocationExpression mie = builder.CreateMethodInvocation(member);
foreach (ParameterDeclaration p in method.Parameters)
{
mie.Arguments.Add(builder.CreateReference(p));
}
if (member.ReturnType == _context.TypeSystemServices.VoidType)
{
method.Body.Add(mie);
}
else
{
method.Body.Add(new ReturnStatement(mie));
}
return(method);
}