/// <summary>On the fly additions like operation1|operation2</summary>
internal void AddItem(String pdiname, Int64 pdivalue)
{
PythonDataItem[] newitems = new PythonDataItem[this._pythonitems.Length + 1];
Array.Copy(this._pythonitems, newitems, this._pythonitems.Length);
newitems[this._pythonitems.Length] = new PythonDataItem(this._pythonitems.Length);
newitems[this._pythonitems.Length].Name = pdiname;
newitems[this._pythonitems.Length].Value = pdivalue;
this._pythonitems = newitems;
}
/// <summary>Reads lines, for Python it's just looking for a = b, recording the source but not
/// attempting to resolve the values at this stage if they're not literals.</summary>
internal override void Read()
{
if (!this.SourceFile.Exists)
{
throw new FileNotFoundException("File not found: " + this.SourceFile.FullName);
}
List <PythonDataItem> tempitems = new List <PythonDataItem>();
using (TextReader tr = new StreamReader(this.SourceFile.FullName))
{
PythonDataItem newitem = ReadPythonItem(tr, tempitems.Count);
if (newitem != null)
{
do
{
tempitems.Add(newitem);
newitem = ReadPythonItem(tr, tempitems.Count - 1);
}while (newitem != null);
}
tr.Close();
}
this._pythonitems = tempitems.ToArray();
PostResolve();
}
/// <summary> Specific PythonDataItem return method to avoid boxing.</summary>
private PythonDataItem ReadPythonItem(TextReader reader, int CurrentIndex)
{
PythonDataItem pdi = new PythonDataItem(CurrentIndex);
String linestr = reader.ReadLine();
Int32 indexequals, indexhash;
while (linestr != null)
{
//Source in PythonDataItem isn't going to be the whole thing just after the = and before any #
linestr = linestr.Trim().Replace(",", String.Empty);//remove commas
indexequals = linestr.IndexOf('=');
indexhash = linestr.IndexOf('#');
//if there is a hash and it's before any equals sigh, if there's no equals sign or if there's a deprecated
if (linestr.IndexOf('[') > -1 && (indexhash == -1 || indexhash > linestr.IndexOf('[')))
{
//start of an array like lhs_operations etc
//keep going until we hit a ] - if it's a one liner then it will just go to the next readline
while (linestr != null && linestr.IndexOf(']') == -1)
{
linestr = reader.ReadLine();
}
if (linestr == null)
{
break;
} //EOF
else
{
linestr = reader.ReadLine();
} //have to do it this way in case we're EOF
if (linestr == null)
{
break;
}
linestr = linestr.Trim(); //prep for next line
}
else if (linestr.StartsWith("def"))
{
//start of a function - they don't all have to return but in the 2 we look at they do at this time
//keep looping till we find a return (or hit EOF)
while (linestr != null && linestr.IndexOf("return") == -1)
{
linestr = reader.ReadLine().TrimStart();//has to be trimmed so we can use StartsWith
}
if (linestr == null)
{
break;
} //EOF
else
{
linestr = reader.ReadLine();
} //have to do it this way in case we're EOF
if (linestr == null)
{
break;
}
linestr = linestr.Trim(); //prep for next line
}
else if ((indexhash > -1 && indexhash <= indexequals) ||
indexequals == -1 || linestr.IndexOf("deprecated") > -1)
{//skip line
linestr = reader.ReadLine();
}
else
{
if (indexhash > -1)
{//chop off end #comments for now but store them in InlineComment for possible future use
pdi.InlineComment = linestr.Substring(indexhash + 1).Trim();
linestr = linestr.Remove(indexhash);
}
pdi.Name = linestr.Remove(indexequals).Trim();
pdi.Source = (indexequals + 1 < linestr.Length ? linestr.Substring(indexequals + 1).Trim() : String.Empty);
//short attempt to resolve, if it's not a literal or hex literal then it will not happen here
Int64 parsedval = 0; //because we can't pass pdi.Value to Int64.TryParse
if (Int64TryParse(pdi.Source, out parsedval))
{
pdi.Value = parsedval;
}
break;
}
}
if (linestr == null)
{
return(null);
} //means we hit EOF
return(pdi);
}
