protected ReferenceBase(StructField baseField, string attrName, string targetName, TextPosition position)
{
_baseField = baseField;
_attrName = attrName;
_targetName = targetName;
_position = position;
}
internal void SetFieldAttribute(StructField field, string key, string value, TextPosition pos)
{
if (field == null) return;
Type fieldType = field.GetType();
while(true)
{
Dictionary<string, AttributeType> fieldsForType;
if (_registry.TryGetValue(fieldType, out fieldsForType))
{
AttributeType attrType;
if (fieldsForType.TryGetValue(key, out attrType))
{
SetFieldAttributeValue(field, key, attrType, value, pos);
return;
}
}
if (fieldType.Equals(typeof(StructField))) break;
fieldType = fieldType.BaseType;
}
try
{
field.SetAttribute(key, value);
}
catch(Exception)
{
throw new ParseException("Unknown attribute " + key, pos);
}
}
public TextPosition OffsetBy(TextPosition position)
{
if (position.Line == 1)
return new TextPosition(_file, _line, _col + position.Col);
else
return new TextPosition(_file, _line + position.Line - 1, position.Col);
}
public void SetAttribute(string name, string value, TextPosition position)
{
if (name == "filemask")
_fileMask = value;
else if (name == "byteorder")
{
if (value == "intel" || value == "littleendian")
_byteOrder = ByteOrder.LittleEndian;
else if (value == "motorola" || value == "bigendian")
_byteOrder = ByteOrder.BigEndian;
else
throw new ParseException("Unknown byteorder value " + value, position);
}
else if (name == "hidden")
_hidden = true;
else if (name == "preload")
_preload = true;
else if (name == "fieldlike")
_fieldLike = (Int32.Parse(value) > 0);
else
throw new ParseException("Unknown attribute " + name, position);
}
public EnumReference(StructField baseField, string attrName, string targetName, TextPosition position)
: base(baseField, attrName, targetName, position)
{
}
public ParseException(string message, TextPosition position, int length)
: base(message)
{
_position = position;
_length = length;
}
private static void SetFieldAttributeValue(StructField field, string key, AttributeType type, string value,
TextPosition pos)
{
switch(type)
{
case AttributeType.Expression:
try
{
field.SetAttributeValue(key, ExpressionParser.Parse(value));
}
catch(ParseException ex)
{
throw new ParseException(ex.Message, pos.OffsetBy(ex.Position));
}
break;
case AttributeType.String:
field.SetAttributeValue(key, value);
break;
case AttributeType.Int:
field.SetAttributeValue(key, Int32.Parse(value));
break;
case AttributeType.Bool:
field.SetAttributeValue(key, (Int32.Parse(value) != 0));
break;
case AttributeType.StructRef:
field.StructDef.StructFile.AddReference(new StructReference(field, key, value, pos));
break;
case AttributeType.EnumRef:
field.StructDef.StructFile.AddReference(new EnumReference(field, key, value, pos));
break;
}
}
public Attribute(string name, string value, TextPosition position)
{
_key = name;
_value = value;
_position = position;
}
public StructReference(StructField baseField, string attrName, string targetName,
TextPosition pos) : base(baseField, attrName, targetName, pos)
{
}