/// <summary>
/// Reads a CGT and creates all the objects needed to create
/// a tokenizer and parser at a later time.
/// </summary>
/// <param name="stream">The CGT stream.</param>
private void ReadFile(Stream stream)
{
try
{
Reset();
this.stream = stream;
CalithaBinReader reader = new CalithaBinReader(stream);
string header = "";
try
{
header = reader.ReadUnicodeString();
if (!header.StartsWith("GOLD"))
{
throw new CGTStructureException("File header is invalid");
}
}
catch (EndOfStreamException e)
{
throw new CGTStructureException("File header is invalid", e);
}
RecordCollection records = new RecordCollection();
while (!(stream.Position == stream.Length))
{
records.Add(ReadRecord(reader));
}
structure = new CGTStructure(header, records);
content = new CGTContent(structure);
dfaStates = CreateDFAStates(content);
parserStates = CreateParserStates(content);
}
finally
{
stream.Close();
}
}
private void Reset()
{
stream = null;
structure = null;
content = null;
dfaStates = null;
parserStates = null;
symbols = null;
rules = null;
}
private lalr.StateCollection CreateParserStates(CGTContent content)
{
rules = CreateRules(content);
lalr.StateCollection states = new lalr.StateCollection();
foreach (LALRStateRecord record in content.LALRStateTable)
{
lalr.State state = new lalr.State(record.Index);
states.Add(state);
}
foreach (LALRStateRecord record in content.LALRStateTable)
{
lalr.State state = states[record.Index];
foreach (ActionSubRecord subRecord in record.ActionSubRecords)
{
Action action = ActionFactory.CreateAction(subRecord, states, symbols, rules);
state.Actions.Add(action);
}
}
return(states);
}
private void Reset()
{
stream = null;
structure = null;
content = null;
dfaStates = null;
parserStates = null;
symbols = null;
rules = null;
}
/// <summary>
/// Reads a CGT and creates all the objects needed to create
/// a tokenizer and parser at a later time.
/// </summary>
/// <param name="stream">The CGT stream.</param>
private void ReadFile(Stream stream)
{
try
{
Reset();
this.stream = stream;
CalithaBinReader reader = new CalithaBinReader(stream);
string header = "";
try
{
header = reader.ReadUnicodeString();
if (! header.StartsWith("GOLD"))
throw new CGTStructureException("File header is invalid");
}
catch (EndOfStreamException e)
{
throw new CGTStructureException("File header is invalid", e);
}
RecordCollection records = new RecordCollection();
while (!(stream.Position == stream.Length))
{
records.Add(ReadRecord(reader));
}
structure = new CGTStructure(header, records);
content = new CGTContent(structure);
dfaStates = CreateDFAStates(content);
parserStates = CreateParserStates(content);
}
finally
{
stream.Close();
}
}
private lalr.StateCollection CreateParserStates(CGTContent content)
{
rules = CreateRules(content);
lalr.StateCollection states = new lalr.StateCollection();
foreach (LALRStateRecord record in content.LALRStateTable)
{
lalr.State state = new lalr.State(record.Index);
states.Add(state);
}
foreach (LALRStateRecord record in content.LALRStateTable)
{
lalr.State state = states[record.Index];
foreach (ActionSubRecord subRecord in record.ActionSubRecords)
{
Action action = ActionFactory.CreateAction(subRecord, states, symbols, rules);
state.Actions.Add(action);
}
}
return states;
}
