public ResolvedType ResolveType(AType type)
{
if (type.IsAnyType)
{
return(this.typeContext.ANY);
}
switch (type.RootType)
{
case "void": return(this.typeContext.VOID);
case "int": return(this.typeContext.INTEGER);
case "bool": return(this.typeContext.BOOLEAN);
case "float": return(this.typeContext.FLOAT);
case "string": return(this.typeContext.STRING);
case "object": return(this.typeContext.OBJECT);
case "[":
case "List":
if (type.Generics.Length != 1)
{
throw new ParserException(type.FirstToken, "A list type has 1 generic.");
}
return(ResolvedType.ListOrArrayOf(ResolveType(type.Generics[0])));
case "Dictionary":
if (type.Generics.Length != 2)
{
throw new ParserException(type.FirstToken, "A dictionary type has 2 generics.");
}
ResolvedType keyType = ResolveType(type.Generics[0]);
ResolvedType valueType = ResolveType(type.Generics[1]);
switch (keyType.Category)
{
case ResolvedTypeCategory.INSTANCE:
case ResolvedTypeCategory.INTEGER:
case ResolvedTypeCategory.STRING:
// This is fine.
break;
default:
throw new ParserException(type.Generics[0].FirstToken, "This is not a valid key type for a dictionary.");
}
return(ResolvedType.GetDictionaryType(keyType, valueType));
default:
ClassDefinition classDef = this.owner.FileScope.DoClassLookup(this.owner, type.FirstToken, type.RootType);
return(ResolvedType.GetInstanceType(this.typeContext, classDef));
}
}
internal override Expression ResolveTypes(ParserContext parser, TypeResolver typeResolver)
{
ResolvedType itemType = typeResolver.ResolveType(this.ListType);
this.ResolvedType = ResolvedType.ListOrArrayOf(itemType);
for (int i = 0; i < this.Items.Length; ++i)
{
this.Items[i] = this.Items[i].ResolveTypes(parser, typeResolver);
if (!this.Items[i].ResolvedType.CanAssignToA(itemType))
{
throw new ParserException(this.Items[i], "This item cannot exist in a list of this type.");
}
}
return(this);
}
internal override Expression ResolveTypes(ParserContext parser, TypeResolver typeResolver)
{
this.ResolvedType = ResolvedType.ListOrArrayOf(ResolvedType.ANY);
return(this);
}
internal override Expression ResolveTypes(ParserContext parser, TypeResolver typeResolver)
{
this.Root.ResolveTypes(parser, typeResolver);
string field = this.FieldToken.Value;
if (this.Root is EnumReference)
{
throw new System.NotImplementedException();
}
ResolvedType rootType = this.Root.ResolvedType;
// TODO: all of this needs to be localized.
switch (rootType.Category)
{
case ResolvedTypeCategory.NULL:
throw new ParserException(this.DotToken, "Cannot dereference a field from null.");
case ResolvedTypeCategory.ANY:
// ¯\_(ツ)_/¯
this.ResolvedType = ResolvedType.ANY;
return(this);
case ResolvedTypeCategory.INTEGER:
throw new ParserException(this.DotToken, "Integers do not have any fields.");
case ResolvedTypeCategory.FLOAT:
throw new ParserException(this.DotToken, "Floating point decimals do not have any fields.");
case ResolvedTypeCategory.BOOLEAN:
throw new ParserException(this.DotToken, "Booleans do not have any fields.");
case ResolvedTypeCategory.STRING:
switch (field)
{
case "length":
this.ResolvedType = ResolvedType.INTEGER;
if (this.Root is StringConstant)
{
return(new IntegerConstant(this.FirstToken, ((StringConstant)this.Root).Value.Length, this.Owner));
}
return(this);
case "contains": return(BuildPrimitiveMethod(ResolvedType.BOOLEAN, ResolvedType.STRING));
case "endsWith": return(BuildPrimitiveMethod(ResolvedType.BOOLEAN, ResolvedType.STRING));
case "indexOf": return(BuildPrimitiveMethod(ResolvedType.INTEGER, ResolvedType.STRING));
case "lower": return(BuildPrimitiveMethod(ResolvedType.STRING));
case "ltrim": return(BuildPrimitiveMethod(ResolvedType.STRING));
case "replace": return(BuildPrimitiveMethod(ResolvedType.STRING, ResolvedType.STRING, ResolvedType.STRING));
case "reverse": return(BuildPrimitiveMethod(ResolvedType.STRING));
case "rtrim": return(BuildPrimitiveMethod(ResolvedType.STRING));
case "split": return(BuildPrimitiveMethod(ResolvedType.ListOrArrayOf(ResolvedType.STRING), ResolvedType.STRING));
case "startsWith": return(BuildPrimitiveMethod(ResolvedType.BOOLEAN, ResolvedType.STRING));
case "trim": return(BuildPrimitiveMethod(ResolvedType.STRING));
case "upper": return(BuildPrimitiveMethod(ResolvedType.STRING));
// common mistakes
case "join":
throw new ParserException(this.DotToken, "Strings do not have a .join(list) method. Did you mean to do list.join(string)?");
case "size":
throw new ParserException(this.DotToken, "Strings do not have a .size() method. Did you mean to use .length?");
default:
throw new ParserException(this.DotToken, "Strings do not have that method.");
}
case ResolvedTypeCategory.LIST:
ResolvedType itemType = rootType.ListItemType;
switch (field)
{
case "length":
this.ResolvedType = ResolvedType.INTEGER;
return(this);
case "filter":
case "map":
if (this.CompilationScope.IsStaticallyTyped)
{
// TODO: for Acrylic, this needs to have a way to indicate that resolution should be attempted
// again once the function return type is known.
throw new System.NotImplementedException();
}
this.ResolvedType = ResolvedType.ANY;
return(this);
case "add": return(BuildPrimitiveMethod(ResolvedType.VOID, itemType));
case "choice": return(BuildPrimitiveMethod(ResolvedType.VOID));
case "clear": return(BuildPrimitiveMethod(ResolvedType.VOID));
case "clone": return(BuildPrimitiveMethod(rootType));
case "concat": return(BuildPrimitiveMethod(rootType, rootType));
case "contains": return(BuildPrimitiveMethod(ResolvedType.BOOLEAN, itemType));
case "insert": return(BuildPrimitiveMethod(ResolvedType.VOID, ResolvedType.INTEGER, itemType));
case "join": return(BuildPrimitiveMethodWithOptionalArgs(ResolvedType.STRING, 1, ResolvedType.STRING));
case "pop": return(BuildPrimitiveMethod(itemType));
case "remove": return(BuildPrimitiveMethod(ResolvedType.VOID, ResolvedType.INTEGER));
case "reverse": return(BuildPrimitiveMethod(ResolvedType.VOID));
case "shuffle": return(BuildPrimitiveMethod(ResolvedType.VOID));
case "sort": return(BuildPrimitiveMethod(ResolvedType.VOID));
// common mistakes
case "count":
case "size":
throw new ParserException(this.DotToken, "Lists do not have a ." + this.FieldToken.Value + "() method. Did you mean to use .length?");
default:
throw new ParserException(this.DotToken, "Lists do not have that method.");
}
case ResolvedTypeCategory.DICTIONARY:
ResolvedType keyType = rootType.DictionaryKeyType;
ResolvedType valueType = rootType.DictionaryValueType;
switch (field)
{
case "length":
this.ResolvedType = ResolvedType.INTEGER;
return(this);
case "clear": return(BuildPrimitiveMethod(ResolvedType.VOID));
case "clone": return(BuildPrimitiveMethod(rootType));
case "contains": return(BuildPrimitiveMethod(ResolvedType.BOOLEAN, keyType));
case "get": return(BuildPrimitiveMethodWithOptionalArgs(valueType, 1, keyType, valueType));
case "keys": return(BuildPrimitiveMethod(ResolvedType.ListOrArrayOf(keyType)));
case "merge": return(BuildPrimitiveMethod(ResolvedType.VOID, rootType));
case "remove": return(BuildPrimitiveMethod(ResolvedType.VOID, keyType));
case "values": return(BuildPrimitiveMethod(ResolvedType.ListOrArrayOf(valueType)));
default:
throw new ParserException(this.DotToken, "Dictionaries do not have that field.");
}
case ResolvedTypeCategory.CLASS_DEFINITION:
throw new ParserException(this.DotToken, "Class definitions do not have that field.");
case ResolvedTypeCategory.FUNCTION_POINTER:
switch (field)
{
case "invoke":
return(BuildPrimitiveMethod(ResolvedType.ANY, ResolvedType.ListOrArrayOf(ResolvedType.ANY)));
default:
throw new ParserException(this.DotToken, "Fucntions do not have that field.");
}
case ResolvedTypeCategory.INSTANCE:
FieldDefinition fieldDef = rootType.ClassTypeOrReference.GetField(field, true);
if (fieldDef != null)
{
if (!Node.IsAccessAllowed(this, fieldDef))
{
ClassDefinition cd = fieldDef.ClassOwner;
throw new ParserException(FieldToken, "The field '" + cd.NameToken.Value + "." + this.FieldToken.Value + "' is not accessible from here due to its access scope.");
}
this.ResolvedType = fieldDef.ResolvedFieldType;
return(this);
}
FunctionDefinition funcDef = rootType.ClassTypeOrReference.GetMethod(field, true);
if (funcDef != null)
{
this.ResolvedType = ResolvedType.GetFunctionType(funcDef);
return(this);
}
throw new ParserException(this.DotToken, "The class '" + rootType.ClassTypeOrReference.NameToken.Value + "' does not have a field called '" + field + "'.");
default:
throw new ParserException(this.DotToken, "This field does not exist.");
}
}
