public static ProgramRepresentation.Program readProgram(string filename)
{
List<string> readLines;
int lineI;
Regex introRegex = new Regex("^<(?<type>[lg]) (?<name>[A-Za-z0-9]+)>");
Regex labelRegex = new Regex("^(?<type>[lg]) (?<name>[A-Za-z0-9]+)");
List<InstructionLinkageHolder> instructionLinkageHolders = new List<InstructionLinkageHolder>();
ProgramRepresentation.Program resultProgram = new Program();
readLines = Misc.TextFile.readLinesFromFile(filename);
for( lineI = 0; lineI < readLines.Count; lineI++ )
{
string currentLine;
Match introRegexMatch;
string labelType;
string labelName;
int remainingLines;
string instructionTypeString;
InstructionLinkageHolder.LinkageHolder.Type instructionLinkageHolderType;
remainingLines = readLines.Count - lineI - 1;
currentLine = readLines[lineI];
if( currentLine.Length >= 2 && currentLine.Substring(0, 2) == "//" )
{
continue;
}
if( currentLine.Length == 0 )
{
continue;
}
introRegexMatch = introRegex.Match(currentLine);
if( !introRegexMatch.Success )
{
throw new ParsingError(lineI+1, "No valid label/instruction!");
}
labelType = introRegexMatch.Groups["type"].Value;
labelName = introRegexMatch.Groups["name"].Value;
if( labelType == "l" )
{
// local
instructionLinkageHolderType = InstructionLinkageHolder.LinkageHolder.Type.LOCAL;
}
else if( labelType == "g" )
{
// global
instructionLinkageHolderType = InstructionLinkageHolder.LinkageHolder.Type.GLOBAL;
}
else
{
throw new ParsingError(lineI+1, "label type must be either (g)lobal or (l)ocal!");
}
if( remainingLines == 0 )
{
throw new ParsingError(lineI+1, "too less lines!");
}
instructionTypeString = readLines[lineI+1];
DagDataInfo dagDataInfo = getDagDataInfoByTypeString(lineI + 1, instructionTypeString);
bool remainingLengthEnought = checkRemainingLength(dagDataInfo, remainingLines);
if( !remainingLengthEnought )
{
throw new ParsingError(lineI + 1, "too few lines!");
}
lineI++;
InstructionLinkageHolder instructionLinkageHolderForThisInstruction;
instructionLinkageHolderForThisInstruction = new InstructionLinkageHolder(new InstructionLinkageHolder.LinkageHolder(instructionLinkageHolderType, labelName));
instructionLinkageHolders.Add(instructionLinkageHolderForThisInstruction);
int childI;
for( childI = 0; childI < dagDataInfo.childIndicesLength; childI++ )
{
string childString;
Match labelRegexMatch;
string childLabelType, childlabelName;
InstructionLinkageHolder.LinkageHolder.Type childInstructionLinkageHolderType;
InstructionLinkageHolder.LinkageHolder childLinkage;
childString = readLines[lineI + 1 + childI];
labelRegexMatch = labelRegex.Match(childString);
if( !labelRegexMatch.Success )
{
throw new ParsingError(lineI + 1 + childI, "can't parse label");
}
childLabelType = labelRegexMatch.Groups["type"].Value;
childlabelName = labelRegexMatch.Groups["name"].Value;
if( childLabelType == "l" )
{
childInstructionLinkageHolderType = InstructionLinkageHolder.LinkageHolder.Type.LOCAL;
}
else if( childLabelType == "g" )
{
childInstructionLinkageHolderType = InstructionLinkageHolder.LinkageHolder.Type.GLOBAL;
}
else
{
throw new ParsingError(lineI + 1 + childI, "invalid type");
}
childLinkage = new InstructionLinkageHolder.LinkageHolder(childInstructionLinkageHolderType, childlabelName);
instructionLinkageHolderForThisInstruction.childLinks.Add(childLinkage);
}
lineI += dagDataInfo.childIndicesLength + 1;
ProgramRepresentation.DagElementData newDagElementData;
newDagElementData = new DagElementData();
newDagElementData.type = dagDataInfo.type;
string identifierName;
string valueString;
switch( dagDataInfo.type )
{
case DagElementData.EnumType.IDENTIFIERNAME:
case DagElementData.EnumType.ARRAYREAD2D:
case DagElementData.EnumType.ARRAYREAD1D:
case DagElementData.EnumType.PARAM:
if( lineI + 1 > readLines.Count )
{
throw new ParsingError(lineI + 1, "too few lines!");
}
identifierName = readLines[lineI];
lineI++;
newDagElementData.identifier = identifierName;
break;
case DagElementData.EnumType.CONSTINT:
if (lineI + 1 > readLines.Count)
{
throw new ParsingError(lineI + 1, "too few lines!");
}
valueString = readLines[lineI];
lineI++;
newDagElementData.valueInt = Convert.ToInt32(valueString);
break;
case DagElementData.EnumType.CONSTFLOAT:
if (lineI + 1 > readLines.Count)
{
throw new ParsingError(lineI + 1, "too few lines!");
}
valueString = readLines[lineI];
lineI++;
newDagElementData.valueFloat = (float)Convert.ToDouble(valueString);
break;
}
// add instruction
resultProgram.dag.addElement(new Datastructures.Dag<DagElementData>.Element(newDagElementData));
}
// linkage
doLinkage(resultProgram, instructionLinkageHolders);
return resultProgram;
}
public DagDataInfo(string typeAsString, DagElementData.EnumType type, int childIndicesLength)
{
this.typeAsString = typeAsString;
this.type = type;
this.childIndicesLength = childIndicesLength;
}