public static BinaryFormatFile ParseFile(LfdLineReader reader)
{
BinaryFormatFile file = new BinaryFormatFile();
ParseFile(file, reader);
return(file);
}
static SwitchTypeReference ParseSwitch(BinaryFormatFile file, LfdLineReader reader, LfdLine switchLine, NamedObjectDefinition containingNamedObject, out LfdLine nextLine)
{
List <Case> cases = new List <Case>();
String switchFieldString = switchLine.fields[0];
Debug("Entering Switch Definition '{0}'", switchFieldString);
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == switchLine)
{
Boolean isCase = nextLine.id.Equals("case", StringComparison.OrdinalIgnoreCase);
if (!isCase && !nextLine.id.Equals("default", StringComparison.OrdinalIgnoreCase))
{
throw new FormatException(String.Format("Expected 'Case' or 'Default' but got '{0}'", nextLine));
}
VerifyFieldCount(nextLine, isCase ? 1 : 0);
LfdLine currentCaseLine = nextLine;
String currentCaseValueString = isCase ? nextLine.fields[0] : null;
ObjectDefinition currentCaseObjectDefinition = new ObjectDefinition(file);
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == currentCaseLine)
{
ParseObjectFieldLine(file, reader, containingNamedObject, currentCaseObjectDefinition, nextLine, out nextLine);
}
currentCaseObjectDefinition.CalculateFixedSerializationLength();
cases.Add(new Case(currentCaseValueString, currentCaseObjectDefinition));
}
return(new SwitchTypeReference(switchFieldString, cases));
}
static IfTypeReference ParseIf(BinaryFormatFile file, LfdLineReader reader, LfdLine ifLine, NamedObjectDefinition containingNamedObject, out LfdLine nextLine)
{
Case trueCase, falseCase = null;
String conditionString = ifLine.fields[0];
Debug("Entering If Definition '{0}'", conditionString);
ObjectDefinition trueCaseObjectDefinition = new ObjectDefinition(file);
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == ifLine)
{
ParseObjectFieldLine(file, reader, containingNamedObject, trueCaseObjectDefinition, nextLine, out nextLine);
}
trueCaseObjectDefinition.CalculateFixedSerializationLength();
trueCase = new Case(conditionString, trueCaseObjectDefinition);
if (nextLine != null && nextLine.id.Equals("else", StringComparison.OrdinalIgnoreCase))
{
LfdLine falseCaseLine = nextLine;
ObjectDefinition falseCaseObjectDefinition = new ObjectDefinition(file);
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == falseCaseLine)
{
ParseObjectFieldLine(file, reader, containingNamedObject, falseCaseObjectDefinition, nextLine, out nextLine);
}
falseCaseObjectDefinition.CalculateFixedSerializationLength();
falseCase = new Case(conditionString, falseCaseObjectDefinition);
}
return(new IfTypeReference(conditionString, trueCase, falseCase));
}
static NamedObjectDefinition ParseObjectDefinition(BinaryFormatFile file, LfdLineReader reader, LfdLine objectDefinitionLine,
NamedObjectDefinition currentObjectDefinition, String objectDefinitionName, out LfdLine nextLine)
{
NamedObjectDefinition objectDefinition = new NamedObjectDefinition(file, objectDefinitionName,
objectDefinitionName.ToLowerInvariant(), currentObjectDefinition);
Debug("Entering Object Definition '{0}'", objectDefinition.name);
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == objectDefinitionLine)
{
ParseObjectFieldLine(file, reader, objectDefinition, objectDefinition, nextLine, out nextLine);
}
objectDefinition.CalculateFixedSerializationLength();
return(objectDefinition);
}
static void ParseEnumOrFlagsDefinition(BinaryFormatFile file, LfdLineReader reader, NamedObjectDefinition currentObjectDefinition, LfdLine enumDefinitionLine, out LfdLine nextLine, Boolean isFlagsDefinition)
{
String enumOrFlagsString = isFlagsDefinition ? "Flags" : "Enum";
VerifyFieldCount(enumDefinitionLine, 2);
String underlyingIntegerTypeString = enumDefinitionLine.fields[0];
BinaryFormatType underlyingIntegerType = BinaryFormatTypeExtensions.ParseIntegerType(underlyingIntegerTypeString);
EnumOrFlagsDefinition definition;
try
{
definition = new EnumOrFlagsDefinition(file, isFlagsDefinition, currentObjectDefinition,
underlyingIntegerType, enumDefinitionLine.fields[1]);
}
catch (FormatException e) { throw new ParseException(enumDefinitionLine, e.Message); }
Debug(" Entering {0} '{1}' (IntegerType={2})", enumOrFlagsString, enumDefinitionLine.id, definition.underlyingIntegerType);
//
// Read enum values
//
nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null && nextLine.parent == enumDefinitionLine)
{
LfdLine enumValueLine = nextLine;
VerifyFieldCount(enumValueLine, 1);
Debug(" {0} {1} {2}", enumOrFlagsString, enumValueLine.id, enumValueLine.fields[0]);
if (isFlagsDefinition)
{
definition.Add(new FlagsValueDefinition(enumValueLine.fields[0], Byte.Parse(enumValueLine.id)));
}
else
{
definition.Add(new EnumValueDefinition(enumValueLine.id, enumValueLine.fields[0]));
}
nextLine = reader.ReadLineIgnoreComments();
}
Debug(" Exiting {0} '{1}'", enumOrFlagsString, definition.typeName);
}
public static void ParseFile(BinaryFormatFile file, LfdLineReader reader)
{
LfdLine nextLine = reader.ReadLineIgnoreComments();
while (nextLine != null)
{
if (nextLine.id.Equals("enum", StringComparison.OrdinalIgnoreCase))
{
ParseEnumOrFlagsDefinition(file, reader, null, nextLine, out nextLine, false);
}
else if (nextLine.id.Equals("flags", StringComparison.OrdinalIgnoreCase))
{
ParseEnumOrFlagsDefinition(file, reader, null, nextLine, out nextLine, true);
}
else
{
LfdLine currentCommandLine = nextLine;
VerifyFieldCount(currentCommandLine, 0);
NamedObjectDefinition objectDefinition = ParseObjectDefinition(file, reader, currentCommandLine, null, currentCommandLine.id, out nextLine);
}
}
}
public static void ParseObjectFieldLine(BinaryFormatFile file, LfdLineReader reader, NamedObjectDefinition containingNamedObject,
IFieldContainer containingObject, LfdLine fieldLine, out LfdLine nextLine)
{
//
// Check if it is only a definition (enum or flag)
//
if (fieldLine.id.Equals("enum", StringComparison.OrdinalIgnoreCase))
{
ParseEnumOrFlagsDefinition(file, reader, containingNamedObject, fieldLine, out nextLine, false);
return;
}
if (fieldLine.id.Equals("flags", StringComparison.OrdinalIgnoreCase))
{
ParseEnumOrFlagsDefinition(file, reader, containingNamedObject, fieldLine, out nextLine, true);
return;
}
String typeString = fieldLine.id;
//
// The rest of the fields can have arrayParse the Array Size Type
//
BinaryFormatArrayType arrayType;
int indexOfOpenBracket = typeString.IndexOf('[');
if (indexOfOpenBracket < 0)
{
arrayType = null;
}
else
{
String arraySizeTypeString = typeString.Substring(indexOfOpenBracket + 1);
typeString = typeString.Remove(indexOfOpenBracket);
int indexOfCloseBracket = arraySizeTypeString.IndexOf(']');
if (indexOfCloseBracket < 0)
{
throw new ParseException(fieldLine, "Found an opening bracket '[' without a closing bracket");
}
if (indexOfCloseBracket != arraySizeTypeString.Length - 1)
{
throw new ParseException(fieldLine, "The array size type '{0}' had a closing bracket, but the closing bracket was not the last character", arraySizeTypeString);
}
arraySizeTypeString = arraySizeTypeString.Remove(indexOfCloseBracket);
arrayType = BinaryFormatArrayType.Parse(fieldLine, arraySizeTypeString);
}
//
// Parse object inline definition
//
if (typeString.Equals("object", StringComparison.OrdinalIgnoreCase))
{
VerifyFieldCount(fieldLine, 1);
String objectDefinitionAndFieldName = fieldLine.fields[0];
NamedObjectDefinition fieldObjectDefinition = ParseObjectDefinition(file, reader, fieldLine,
containingNamedObject, objectDefinitionAndFieldName, out nextLine);
containingObject.AddField(new ObjectDefinitionField(
new ObjectTypeReference(objectDefinitionAndFieldName, fieldObjectDefinition, arrayType),
objectDefinitionAndFieldName));
return;
}
//
// Check if it is a serializer
//
if (fieldLine.id.Equals("serializer", StringComparison.OrdinalIgnoreCase))
{
VerifyFieldCount(fieldLine, 2);
String serializerLengthTypeString = fieldLine.fields[0];
String serializerFieldName = fieldLine.fields[1];
BinaryFormatArrayType serializerLengthType = BinaryFormatArrayType.Parse(fieldLine, serializerLengthTypeString);
containingObject.AddField(new ObjectDefinitionField(new SerializerTypeReference(serializerLengthType, arrayType), serializerFieldName));
nextLine = reader.ReadLineIgnoreComments();
return;
}
//
// Check if it is an 'if' type
//
if (typeString.Equals("if", StringComparison.OrdinalIgnoreCase))
{
VerifyFieldCount(fieldLine, 1);
IfTypeReference ifType = ParseIf(file, reader, fieldLine,
containingNamedObject, out nextLine);
containingObject.AddField(new ObjectDefinitionField(ifType, null));
return;
}
//
// Check if it is a switch type
//
if (typeString.Equals("switch", StringComparison.OrdinalIgnoreCase))
{
VerifyFieldCount(fieldLine, 1);
SwitchTypeReference switchType = ParseSwitch(file, reader, fieldLine,
containingNamedObject, out nextLine);
containingObject.AddField(new ObjectDefinitionField(switchType, null));
return;
}
//
// The field is only one line, so read the next line now for the caller
//
nextLine = reader.ReadLineIgnoreComments();
EnumOrFlagsDefinition enumDefinition = file.TryGetEnumOrFlagsDefinition(containingNamedObject, typeString);
if (enumDefinition != null)
{
VerifyFieldCount(fieldLine, 1);
containingObject.AddField(new ObjectDefinitionField(new EnumOrFlagsTypeReference(typeString, enumDefinition, arrayType),
fieldLine.fields[0]));
return;
}
// Check if it is an object type
NamedObjectDefinition objectDefinition = file.TryGetObjectDefinition(containingNamedObject, typeString);
if (objectDefinition != null)
{
if (fieldLine.fields == null || fieldLine.fields.Length <= 0)
{
//
// Add each field from the object definition to the current object definition
//
List <ObjectDefinitionField> objectDefinitionFields = objectDefinition.Fields;
for (int i = 0; i < objectDefinitionFields.Count; i++)
{
ObjectDefinitionField fieldDefinition = objectDefinitionFields[i];
containingObject.AddField(fieldDefinition);
}
}
else if (fieldLine.fields.Length == 1)
{
containingObject.AddField(new ObjectDefinitionField(
new ObjectTypeReference(typeString, objectDefinition, arrayType), fieldLine.fields[0]));
}
else
{
throw new ParseException(fieldLine, "Expected line to have 0 or 1 fields but had {0}", fieldLine.fields.Length);
}
return;
}
//
// Check if it a string type
//
if (typeString.Equals("ascii", StringComparison.OrdinalIgnoreCase))
{
VerifyFieldCount(fieldLine, 1);
containingObject.AddField(new ObjectDefinitionField(
new AsciiTypeReference(typeString, arrayType), fieldLine.fields[0]));
return;
}
//
// It must be an integer type
//
VerifyFieldCount(fieldLine, 1);
BinaryFormatType type;
try { type = (BinaryFormatType)Enum.Parse(typeof(BinaryFormatType), typeString, true); }
catch (ArgumentException) { throw new FormatException(String.Format("Unknown Type '{0}'", typeString)); }
if (!type.IsIntegerType())
{
throw new InvalidOperationException(String.Format("Unhandled type '{0}'", type));
}
containingObject.AddField(new ObjectDefinitionField(new IntegerTypeReference(type, arrayType), fieldLine.fields[0]));
}
public ParseException(LfdLineReader reader, String reason)
: base(String.Format("Parse Error (line {0}): {1}", reader.LineNumber, reason))
{
}