//******************************************************************
/// <summary>
/// Saves the displayed parses to the indicated parse file
/// (sFileName). The Modified property is set to false after the
/// file is saved.
/// </summary>
public void SaveParseFile(string sFileName)
{
//**************************************************************
// Validate the parameters.
if ((sFileName == null) || (sFileName == ""))
{
string sMessage = "Invalid argument: "
+ "ParseListViewer.SaveParseFile() requires "
+ "a file name that is not null or blank.";
throw new Exception(sMessage);
}
//**************************************************************
// Create a ParseWriter to write to the indicated parse file.
StreamWriter oStreamWriter = new StreamWriter(sFileName);
ParseWriter oParseWriter = new ParseWriter(oStreamWriter);
//**************************************************************
// For each item in the ListView, write the parse to the file.
foreach (ListViewItem oItem in moListView.Items)
{
//**********************************************************
// Get the parse from the ListView item.
Debug.Assert(oItem is ParseListViewerItem);
ParseListViewerItem oParseItem
= (ParseListViewerItem) oItem;
//**********************************************************
// Make sure the parse tree is not null.
SyntaxNode oParseTreeRoot = oParseItem.ParseTreeRoot;
if (oParseTreeRoot == null)
{
oParseTreeRoot = new SyntaxNode();
}
//**********************************************************
// Write the parse tree to the file.
oParseWriter.ParseTreeRoot = oParseTreeRoot;
oParseWriter.Write();
}
//**************************************************************
// Close the ParseWriter.
oParseWriter.Close();
//**************************************************************
// Set the Modified property to false.
Modified = false;
}
//******************************************************************
/// <summary>
/// The timer is fired once after the form is loaded, and this event
/// handler performs the tree-transfer processing. It uses the
/// collection of transfer rules to process the parse trees in the
/// input file, and it writes the modified parse trees to the output
/// file.
/// </summary>
private void moTimer_Tick(object oSender,EventArgs oArgs)
{
ParseReader oParseReader = null;
ParseWriter oParseWriter = null;
try
{
//**********************************************************
// Stop the timer (so it only fires once after the form is
// loaded).
moTimer.Stop();
//**********************************************************
// Initialize the information displayed on the form.
Text = "Processing Parse File...";
moInputFileTextBox.Text = InputFileName;
moOutputFileTextBox.Text = OutputFileName;
moRuleCountTextBox.Text = TransferRules.Count.ToString();
moParseCountTextBox.Text = "0";
moInputFileTextBox.Select(
moInputFileTextBox.Text.Length,0);
moOutputFileTextBox.Select(
moOutputFileTextBox.Text.Length,0);
moRuleCountTextBox.Select(
moRuleCountTextBox.Text.Length,0);
moParseCountTextBox.Select(
moParseCountTextBox.Text.Length,0);
moParseCountTextBox.Focus();
moOKButton.Enabled = false;
moCancelButton.Enabled = true;
//**********************************************************
// Make sure the form is visible.
Show();
Application.DoEvents();
//**********************************************************
// Open the input and output files.
StreamReader oStreamReader
= new StreamReader(InputFileName);
oParseReader = new ParseReader(oStreamReader);
StreamWriter oStreamWriter
= new StreamWriter(OutputFileName);
oParseWriter = new ParseWriter(oStreamWriter);
//**********************************************************
// Read and process each parse tree from the input file.
int iCount = 0;
ProcessingWasCanceled = false;
while ((oParseReader.Read()) && (! ProcessingWasCanceled))
{
//******************************************************
// Create a TreeTransfer object and set its
// ParseTreeRoot to the parse tree that was read from
// the input file.
TreeTransfer oTransfer = new TreeTransfer();
oTransfer.ParseTreeRoot = oParseReader.ParseTreeRoot;
//******************************************************
// Apply each rule in the TransferRules collection.
foreach (TransferRule oRule in TransferRules)
{
oTransfer.FindPatternRoot
= oRule.FindPatternRoot;
oTransfer.ReplacePatternRoot
= oRule.ReplacePatternRoot;
//**************************************************
// Apply the rule to each matching branch.
oTransfer.CurrentParseTreeNode = null;
while (oTransfer.FindNextMatchingBranch())
{
oTransfer.ReplaceCurrentMatchingBranch();
}
}
//******************************************************
// Write the modified parse tree to the output file.
oParseWriter.ParseTreeRoot = oTransfer.ParseTreeRoot;
oParseWriter.Write();
//******************************************************
// Update the information displayed on the form.
++iCount;
moParseCountTextBox.Text = iCount.ToString();
moParseCountTextBox.Select(
moParseCountTextBox.Text.Length,0);
//******************************************************
// Call DoEvents() so the form can update the display
// and check if the user clicked the Cancel button.
Application.DoEvents();
}
//**********************************************************
// Close the input and output files.
oParseReader.Close();
oParseReader = null;
oParseWriter.Close();
oParseWriter = null;
//**********************************************************
// Update the final information displayed on the form.
if (ProcessingWasCanceled)
{
Text = "Processing Parse File... Canceled";
}
else
{
Text = "Processing Parse File... Finished";
}
moOKButton.Enabled = true;
moCancelButton.Enabled = false;
moOKButton.Focus();
//**********************************************************
// If the Cancel button was clicked, set DialogResult to
// DialogResult.Cancel, which will close the form.
//
// If the Cancel button was not clicked, but the
// CloseWhenFinished property is true, set DialogResult to
// DialogResult.OK, which will close the form.
if (ProcessingWasCanceled)
{
DialogResult = DialogResult.Cancel;
}
else
{
if (CloseWhenFinished)
{
DialogResult = DialogResult.OK;
}
}
}
catch (Exception oException)
{
ShowException(oException);
ProcessingWasCanceled = true;
}
try
{
//**********************************************************
// Make sure the output file is closed (even if an exception
// was thrown).
if (oParseWriter != null)
{
oParseWriter.Close();
oParseWriter = null;
}
}
catch (Exception oException)
{
ShowException(oException);
ProcessingWasCanceled = true;
}
try
{
//**********************************************************
// Make sure the OK button is enabled (even if an exception
// was thrown).
moOKButton.Enabled = true;
moCancelButton.Enabled = false;
moOKButton.Focus();
}
catch (Exception oException)
{
ShowException(oException);
ProcessingWasCanceled = true;
}
try
{
//**********************************************************
// If the Cancel button was clicked (or an exception was
// thrown), make sure DialogResult is set to
// DialogResult.Cancel, which will close the form.
if (ProcessingWasCanceled)
{
DialogResult = DialogResult.Cancel;
}
}
catch (Exception oException)
{
ShowException(oException);
}
}
