/* take a block of text and parse it into a sequencer config. it returns an */
/* error code. if an error occurs, then *SeqOut is invalid, otherwise it will */
/* be valid. the text file remains unaltered. *ErrorLine is numbered from 1. */
public static BuildSeqErrors BuildSequencerFromText(
string TextFile,
out int ErrorLine,
out SequencerConfigSpecRec SeqOut)
{
ScannerRec <SeqKeywordType> Scanner;
SequencerConfigSpecRec Sequencer;
BuildSeqErrors Error;
SeqOut = null;
ErrorLine = -1;
Sequencer = NewSequencerConfigSpec();
Scanner = new ScannerRec <SeqKeywordType>(TextFile, SeqKeywordTable);
Error = ParseSequencer(
Sequencer,
Scanner,
out ErrorLine);
if (Error == BuildSeqErrors.eBuildSeqNoError)
{
/* success */
SeqOut = Sequencer;
}
return(Error);
}
/* create a new one */
public static SequencerConfigSpecRec NewSequencerConfigSpec()
{
SequencerConfigSpecRec Spec = new SequencerConfigSpecRec();
Spec.List = new OneTrackRec[0];
return(Spec);
}
/* add a track to it (copies the strings, but takes ownership of track object) */
public static void AddTrackToSequencerConfigSpec(
SequencerConfigSpecRec Spec,
string TrackName,
string TrackGroupName)
{
OneTrackRec OneTrack = new OneTrackRec();
OneTrack.TrackGroupName = TrackGroupName;
OneTrack.TrackName = TrackName;
Array.Resize(ref Spec.List, Spec.List.Length + 1);
Spec.List[Spec.List.Length - 1] = OneTrack;
}
public static string SequencerConfigGetGroupName(
SequencerConfigSpecRec Spec,
int Index)
{
return(Spec.List[Index].TrackGroupName);
}
/* get number of thingies in it */
public static int GetSequencerConfigLength(SequencerConfigSpecRec Spec)
{
return(Spec.List.Length);
}
private static BuildSeqErrors ParseSequencer(
SequencerConfigSpecRec Sequencer,
ScannerRec <SeqKeywordType> Scanner,
out int ErrorLine)
{
TokenRec <SeqKeywordType> Token;
TokenRec <SeqKeywordType> TokenName;
TokenRec <SeqKeywordType> TokenGroup;
ErrorLine = -1;
while (true)
{
Token = Scanner.GetNextToken();
if (Token.GetTokenType() == TokenTypes.eTokenEndOfInput)
{
break;
}
if ((Token.GetTokenType() != TokenTypes.eTokenKeyword) ||
(Token.GetTokenKeywordTag() != SeqKeywordType.eSeqKeywordTrack))
{
ErrorLine = Scanner.GetCurrentLineNumber();
return(BuildSeqErrors.eBuildSeqExpectedTrack);
}
/* parse the track */
/* "name" */
TokenName = Scanner.GetNextToken();
if (TokenName.GetTokenType() != TokenTypes.eTokenString)
{
ErrorLine = Scanner.GetCurrentLineNumber();
return(BuildSeqErrors.eBuildSeqExpectedTrackName);
}
/* group */
Token = Scanner.GetNextToken();
if ((Token.GetTokenType() != TokenTypes.eTokenKeyword) ||
(Token.GetTokenKeywordTag() != SeqKeywordType.eSeqKeywordGroup))
{
ErrorLine = Scanner.GetCurrentLineNumber();
return(BuildSeqErrors.eBuildSeqExpectedGroup);
}
/* "group" */
TokenGroup = Scanner.GetNextToken();
if (TokenGroup.GetTokenType() != TokenTypes.eTokenString)
{
ErrorLine = Scanner.GetCurrentLineNumber();
return(BuildSeqErrors.eBuildSeqExpectedGroupName);
}
/* ; */
Token = Scanner.GetNextToken();
if (Token.GetTokenType() != TokenTypes.eTokenSemicolon)
{
ErrorLine = Scanner.GetCurrentLineNumber();
return(BuildSeqErrors.eBuildSeqExpectedSemicolon);
}
/* add it */
AddTrackToSequencerConfigSpec(
Sequencer,
TokenName.GetTokenStringValue(),
TokenGroup.GetTokenStringValue());
}
return(BuildSeqErrors.eBuildSeqNoError);
}
