public StructSortMapping(CompilationInfo info, INamedTypeSymbol symbol)
: base(info)
{
Symbol = symbol;
// The order of the following array fixes the order of the fields in the tuple
FieldSymbols = Symbol.GetMembers().OfType <IFieldSymbol>().ToArray();
if (!FieldSymbols.All(s => !s.IsStatic))
{
throw new SyntaxErrorException("Static fields are not supported");
}
// Get the sort mappings for the fields
var fieldInfo = FieldSymbols.Select(s => new { Symbol = s, Mapping = Mapper.GetSortMapping(s.Type) });
// Create the tuplesort with the fields' sorts
Sort = Ctx.MkTupleSort(Mapper.CreateZ3Symbol(Symbol),
fieldInfo.Select(x => Mapper.CreateZ3Symbol(x.Symbol)).ToArray(),
fieldInfo.Select(x => x.Mapping.Sort).ToArray());
FieldSortMappings = fieldInfo.Select(x => x.Mapping).ToArray();
Mapper.RegisterStructSortMapping(this);
}
public override Mutator MutatorForDefaultValue()
{
// The declaration of the struct is processed to find any field initializations. Fields get their initial values from
// the declaration, or if no initial value is declared then the default value for the type is used.
var fieldMutators = new List <Mutator>();
var evaluator = new DefaultValueEvaluator(_info);
foreach (var field in FieldSymbols.Zip(FieldSortMappings, (Symbol, SortMapping) => new { Symbol, SortMapping }))
{
Mutator fieldMutator;
var declarations = field.Symbol.DeclaringSyntaxReferences.Select(r => r.GetSyntax()).OfType <VariableDeclaratorSyntax>().ToList();
if (declarations.Count > 1)
{
throw new SyntaxErrorException("Multiple declarations found for " + field + " in " + Symbol);
}
else if (declarations.Count == 0)
{
throw new SyntaxErrorException("Declaration of field " + field + " in " + Symbol + " not found");
}
var declaration = declarations[0];
if (declaration.Initializer != null)
{
fieldMutator = evaluator.Visit(declaration.Initializer) as Mutator;
if (fieldMutator == null)
{
throw new SyntaxErrorException("Unsupported syntax: " + declaration);
}
}
else
{
fieldMutator = field.SortMapping.MutatorForDefaultValue();
}
fieldMutators.Add(fieldMutator);
}
return(new StructMutator(this, fieldMutators));
}
