public ArchetypeField(string _name_, FieldType _type_) { if (_name_ == null) { Error.BadArg("Got null archetype parse_field name"); } if (!Token.is_bare_multi_word(_name_)) { Error.BadArg("Got invalid parse_field name '{0}'", _name_); } if (_type_ == null) { Error.BadArg("Got null FieldType"); } name = _name_; type = _type_; // Initialize default_value with a suitable IObjField instance // // Yes, doing an switch on types in an OO system is often a code smell. // Does anyone have an aesthetically better means of implementing Duck-Typing in C# prior to C# 4.0 ? // switch (_type_.semantic_type) { case SemanticTypes.INT: default_value = new FieldInt(); break; case SemanticTypes.STRING: default_value = new FieldString(); break; case SemanticTypes.DECIMAL: default_value = new FieldDecimal(); break; case SemanticTypes.ID: default_value = new FieldID(); break; case SemanticTypes.LIST_INT: default_value = new FieldListInt(); break; case SemanticTypes.LIST_STRING: default_value = new FieldListString(); break; case SemanticTypes.LIST_DECIMAL: default_value = new FieldListDecimal(); break; case SemanticTypes.LIST_ID: default_value = new FieldListID(); break; default: Error.BadArg("Got unknown field type '{0}'", _type_); break; } // This method sets up an IObjField with the default C# value for the storage type // (0, "", 0.0M, or an empty list of one of these). // The additional constructors below (with additional args) are called // when a default field value (or a non-empty default list) is specified, // which is possibly the more common case. }
} // this[field_name] public void add_field(string field_name, FieldType type) { IObjField field = null; // or perhaps: new FieldTempNull(this, field_name); switch (type.semantic_type) { case SemanticTypes.INT: field = new FieldInt(); break; case SemanticTypes.STRING: field = new FieldString(); break; case SemanticTypes.DECIMAL: field = new FieldDecimal(); break; case SemanticTypes.ID: field = new FieldID(); break; case SemanticTypes.LIST_INT: field = new FieldListInt(); break; case SemanticTypes.LIST_STRING: field = new FieldListString(); break; case SemanticTypes.LIST_DECIMAL: field = new FieldListDecimal(); break; case SemanticTypes.LIST_ID: field = new FieldListID(); break; default: Error.BadArg("Got unknown field type '{0}'", type); break; } fields[field_name] = field; } // add_field()
public void add_field(string field_name, FieldType type) { IObjField field = null; // or perhaps: new FieldTempNull(this, field_name); switch (type.semantic_type) { case SemanticTypes.INT: field = new FieldInt(); break; case SemanticTypes.STRING: field = new FieldString(); break; case SemanticTypes.DECIMAL: field = new FieldDecimal(); break; case SemanticTypes.ID: field = new FieldID(); break; case SemanticTypes.LIST_INT: field = new FieldListInt(); break; case SemanticTypes.LIST_STRING: field = new FieldListString(); break; case SemanticTypes.LIST_DECIMAL: field = new FieldListDecimal(); break; case SemanticTypes.LIST_ID: field = new FieldListID(); break; default: Error.BadArg("Got unknown field type '{0}'", type); break; } fields[field_name] = field; }