private void LoadFieldGroup(StructLexer lexer, StructDef structDef, StructField parentField)
{
lexer.GetNextToken(StructTokenType.OpenCurly);
StructField linkToField = null;
while (lexer.PeekNextToken() != StructTokenType.CloseCurly)
{
StructField field = LoadField(lexer, structDef, parentField);
if (field != null)
{
bool isLinked = false;
if (linkToField != null)
{
isLinked = linkToField.CanLinkField(field);
}
if (isLinked)
{
linkToField.LinkField(field);
}
else
{
linkToField = field;
}
field.Validate();
}
}
lexer.GetNextToken(StructTokenType.CloseCurly);
}
private void LoadStruct(StructLexer lexer, List <Attribute> attrs)
{
string name = lexer.GetNextToken(StructTokenType.String);
if (_curStructFile.GetStructByName(name) != null)
{
throw new Exception("Duplicate structure name '" + name + "'");
}
LoadAttributes(lexer, attrs);
StructDef structDef = new StructDef(_curStructFile, name);
foreach (Attribute attr in attrs)
{
try
{
structDef.SetAttribute(attr.Key, attr.Value, attr.Position);
}
catch (ParseException ex)
{
_errors.Add(ex);
}
}
LoadFieldGroup(lexer, structDef, null);
_curStructFile.Add(structDef);
}
private StructField LoadField(StructLexer lexer, StructDef structDef, StructField parentField)
{
List <Attribute> attrs = new List <Attribute>();
LoadAttributes(lexer, attrs);
TextPosition fieldPosition = lexer.CurrentPosition;
string fieldType = lexer.GetNextToken(StructTokenType.String);
StructField field = null;
try
{
field = _fieldFactory.CreateField(structDef, fieldType, _attributeRegistry);
field.Name = fieldType;
field.Position = fieldPosition;
}
catch (Exception ex)
{
_errors.Add(new ParseException(ex.Message, fieldPosition));
}
LoadAttributes(lexer, attrs);
if (lexer.PeekNextToken() != StructTokenType.Semicolon && lexer.PeekNextToken() != StructTokenType.OpenCurly)
{
TextPosition pos = lexer.CurrentPosition;
string tag = lexer.GetNextToken(StructTokenType.String);
LoadAttributes(lexer, attrs);
if (field != null)
{
_attributeRegistry.SetFieldAttribute(field, field.DefaultAttribute, tag, pos);
}
}
foreach (Attribute attr in attrs)
{
_attributeRegistry.SetFieldAttribute(field, attr.Key, attr.Value, attr.Position);
}
if (lexer.PeekNextToken() == StructTokenType.OpenCurly)
{
LoadFieldGroup(lexer, structDef, field);
}
else
{
lexer.GetNextToken(StructTokenType.Semicolon);
}
if (field != null)
{
field.EndPosition = lexer.LastTokenEndPosition;
if (parentField == null)
{
structDef.AddField(field);
}
else
{
parentField.AddChildField(field);
}
}
return(field);
}
public FindStructuresAction(List <InstanceTree> scope, StructDef def, string expr)
{
_scope = scope;
_def = def;
if (expr.Length > 0)
{
_expr = ExpressionParser.Parse(expr);
}
}
public StructInstance(StructDef def, InstanceTreeNode parent, Stream stream, long offset)
{
if (offset < 0) throw new ArgumentOutOfRangeException("offset");
SequenceIndex = -1;
_def = def;
_parent = parent;
_stream = stream;
_offset = offset;
}
public FindStructuresAction(List<InstanceTree> scope, StructDef def, string expr)
{
_scope = scope;
_def = def;
if (expr.Length > 0)
{
_expr = ExpressionParser.Parse(expr);
}
}
public StructInstance(StructDef def, InstanceTreeNode parent, Stream stream,
StructInstance followInstance, bool followChildren)
{
SequenceIndex = -1;
_def = def;
_parent = parent;
_stream = stream;
_followInstance = followInstance;
_followChildren = followChildren;
}
public StructInstance(StructDef def, InstanceTreeNode parent, Stream stream,
StructInstance followInstance, bool followChildren)
{
SequenceIndex = -1;
_def = def;
_parent = parent;
_stream = stream;
_followInstance = followInstance;
_followChildren = followChildren;
}
public override void Resolve()
{
StructDef target = _baseField.StructDef.StructFile.GetStructByName(_targetName);
if (target == null)
{
throw new ParseException("Unknown struct " + _targetName, _position);
}
_baseField.SetAttributeValue(_attrName, target);
}
public StructInstance(StructDef def, InstanceTreeNode parent, Stream stream, long offset)
{
if (offset < 0)
{
throw new ArgumentOutOfRangeException("offset");
}
SequenceIndex = -1;
_def = def;
_parent = parent;
_stream = stream;
_offset = offset;
}
private static IConvertible SizeOf(StructInstance context, Expression[] parameters)
{
if (parameters.Length != 1)
{
throw new LoadDataException("SizeOf function requires an argument");
}
if (!(parameters [0] is SymbolExpression))
{
throw new LoadDataException("SizeOf argument must be a symbol");
}
string symbol = ((SymbolExpression)parameters[0]).Symbol;
StructFile structFile = context.Def.StructFile;
StructDef def = structFile.GetStructByName(symbol);
if (def == null)
{
throw new LoadDataException("Structure '" + symbol + "' not found");
}
return(def.GetDataSize());
}
public void Add(StructDef def)
{
_structDefs.Add(def);
}
public DataFile(string name, StructDef def)
{
_name = name;
RootStructDef = def;
}
public void LoadData(string fileName, StructDef def)
{
var dataFile = new DataFile(fileName, def);
_dataFiles.Add(dataFile);
LoadDataFile(dataFile);
}
private StructField LoadField(StructLexer lexer, StructDef structDef, StructField parentField)
{
List<Attribute> attrs = new List<Attribute>();
LoadAttributes(lexer, attrs);
TextPosition fieldPosition = lexer.CurrentPosition;
string fieldType = lexer.GetNextToken(StructTokenType.String);
StructField field = null;
try
{
field = _fieldFactory.CreateField(structDef, fieldType, _attributeRegistry);
field.Name = fieldType;
field.Position = fieldPosition;
}
catch(Exception ex)
{
_errors.Add(new ParseException(ex.Message, fieldPosition));
}
LoadAttributes(lexer, attrs);
if (lexer.PeekNextToken() != StructTokenType.Semicolon && lexer.PeekNextToken() != StructTokenType.OpenCurly)
{
TextPosition pos = lexer.CurrentPosition;
string tag = lexer.GetNextToken(StructTokenType.String);
LoadAttributes(lexer, attrs);
if (field != null)
_attributeRegistry.SetFieldAttribute(field, field.DefaultAttribute, tag, pos);
}
foreach (Attribute attr in attrs)
_attributeRegistry.SetFieldAttribute(field, attr.Key, attr.Value, attr.Position);
if (lexer.PeekNextToken() == StructTokenType.OpenCurly)
LoadFieldGroup(lexer, structDef, field);
else
lexer.GetNextToken(StructTokenType.Semicolon);
if (field != null)
{
field.EndPosition = lexer.LastTokenEndPosition;
if (parentField == null)
structDef.AddField(field);
else
parentField.AddChildField(field);
}
return field;
}
private void LoadFieldGroup(StructLexer lexer, StructDef structDef, StructField parentField)
{
lexer.GetNextToken(StructTokenType.OpenCurly);
StructField linkToField = null;
while(lexer.PeekNextToken() != StructTokenType.CloseCurly)
{
StructField field = LoadField(lexer, structDef, parentField);
if (field != null)
{
bool isLinked = false;
if (linkToField != null)
isLinked = linkToField.CanLinkField(field);
if (isLinked)
linkToField.LinkField(field);
else
linkToField = field;
field.Validate();
}
}
lexer.GetNextToken(StructTokenType.CloseCurly);
}
protected StructField(StructDef structDef, string defaultAttribute, bool acceptsChildren)
{
_structDef = structDef;
_defaultAttribute = defaultAttribute;
_acceptsChildren = acceptsChildren;
}
protected StructField(StructDef structDef)
{
_structDef = structDef;
}
protected StructField(StructDef structDef, string defaultAttribute, bool acceptsChildren)
{
_structDef = structDef;
_defaultAttribute = defaultAttribute;
_acceptsChildren = acceptsChildren;
}
protected StructField(StructDef structDef)
{
_structDef = structDef;
}
private void LoadStruct(StructLexer lexer, List<Attribute> attrs)
{
string name = lexer.GetNextToken(StructTokenType.String);
if (_curStructFile.GetStructByName(name) != null)
throw new Exception("Duplicate structure name '" + name + "'");
LoadAttributes(lexer, attrs);
StructDef structDef = new StructDef(_curStructFile, name);
foreach (Attribute attr in attrs)
{
try
{
structDef.SetAttribute(attr.Key, attr.Value, attr.Position);
}
catch(ParseException ex)
{
_errors.Add(ex);
}
}
LoadFieldGroup(lexer, structDef, null);
_curStructFile.Add(structDef);
}
