/// <summary>
/// Parse the text of the current stmt element until the closing brace of the element
/// or end of string.
/// </summary>
/// <param name="InStmtText"></param>
/// <param name="InTraits"></param>
/// <param name="InCsr"></param>
/// <param name="InParentWord"></param>
/// <returns></returns>
public static WordCursor FirstPass(
string InStmtText, StmtTraits InTraits, WordCursor InCsr, StmtWord InParentWord)
{
WordCursor csr = InCsr;
StmtWord fsWord = null;
while (true)
{
csr = Scanner.ScanNextWord(InStmtText, csr);
StmtWord word = new StmtWord(InStmtText, InParentWord, csr);
InParentWord.SubWords.AddLast(word);
if (csr.IsEndOfString == true)
{
break;
}
// this word is start of stmt.
if (fsWord == null)
{
fsWord = word;
}
// the EndStmt delim is considered to seperate stmts within this parent
// StmtElem. Since we have saved the reference to the first word of the
// parent, the first and last words of the stmt can be marked.
if (csr.DelimClass == DelimClassification.EndStmt)
{
if (fsWord != null)
{
fsWord.BeginStmtWord = fsWord;
fsWord.EndStmtWord = word;
word.BeginStmtWord = fsWord;
word.EndStmtWord = word;
}
fsWord = null;
}
// word is braced ( a function ). collect all the words within the braces.
if ((csr.WordClassification == WordClassification.OpenNamedBraced) ||
(csr.WordClassification == WordClassification.OpenContentBraced))
{
csr = FirstPass(InStmtText, InTraits, csr, word);
// cursor is located at the closing brace. We want the word after the closing
// brace to always be a delim only word. In a parent where members are delimed
// by comma this is no problem. But in a whitespace sep list, this might not
// be the case without a little helpful adjustment.
csr = Scanner.ScanNextWord(InStmtText, csr);
csr.StayAtFlag = true;
if (csr.IsDelimOnly == true)
{
}
else if ((csr.WordClassification == WordClassification.OpenNamedBraced) ||
(csr.WordClassification == WordClassification.OpenContentBraced))
{
csr.SetVirtualCursor_WhitespaceOnly(csr.WordBx - 1);
}
}
// todo: have to expand this throw exception when the closing brace does
// not match the open brace.
else if (csr.DelimClass == DelimClassification.CloseBraced)
{
break;
}
}
return(csr);
}