// *** end of global SYN and SEM declarations from ATG ***
private static void NT_BinaryTree()
{
for (;;)
{
switch (Syn.Interpret())
{
case 0:
return;
case 1: // SEM
tree = new BTree();
break;
case 2:
NT_SubTree(ref tree);
break;
case 3: // SEM
Console.WriteLine("Tree:");
Console.Write("(");
if (tree.HasBeenAssigned())
{
Console.Write(tree);
}
Console.WriteLine(")");
break;
} // switch
} // for
} // NT_BinaryTree
} // NT_BinaryTree
private static void NT_SubTree(ref BTree t)
{
BTree left = new BTree();
BTree right = new BTree();
for (;;)
{
switch (Syn.Interpret())
{
case 0:
return;
case 1:
NT_SubTree(ref left);
break;
case 2:
Lex.GETnumberAttr(out num);
break;
case 3: // SEM
t.Value = num;
t.Left = left;
t.Right = right;
break;
case 4:
NT_SubTree(ref right);
break;
} // switch
} // for
} // NT_SubTree
public static void StartSem()
{
//-----------------------------------|----------------------------------------
for (;;)
{
switch (Syn.Interpret())
{
case 0:
return;
case 1:
NT_BinaryTree();
break;
} // switch
} // for
} // StartSem
} // Abort
private static int CompileFile(String srcFileName)
{
FileStream srcFs = null;
try {
srcFs = new FileStream(srcFileName, FileMode.Open);
} catch (Exception) {
Console.WriteLine("*** file \"{0}\" not found", srcFileName);
return(Utils.EXIT_FAILURE);
} // try/catch
try {
Lex.src = new StreamReader(srcFs);
Console.WriteLine("parsing ...");
Syn.Parse();
Lex.src.Close();
Lex.src.Dispose();
Lex.src = null;
if (Errors.NumOfErrors() > 0)
{
Console.WriteLine("listing ...");
String lstFileName = Path.ChangeExtension(srcFileName, ".lst");
FileStream lstFs = null;
try {
lstFs = new FileStream(lstFileName, FileMode.Create);
} catch (Exception) {
Utils.FatalError(NAME, "CompileFile", "file \"{0}\" not created", lstFileName);
return(Utils.EXIT_FAILURE);
} // try/catch
StreamWriter lstWriter = null;
try {
lstWriter = new StreamWriter(lstFs);
StreamReader srcFsReader = null;
try { // open the source file a second time to generate the error listing
srcFsReader = new StreamReader(new FileStream(srcFileName, FileMode.Open));
lstWriter.WriteLine(NAME + " (file: \"{0}\")", srcFileName);
Errors.GenerateListing(srcFsReader, lstWriter, Errors.ListingShape.longListing);
} finally {
srcFsReader.Close();
srcFsReader.Dispose();
} // try/finally
Console.WriteLine("{0} error(s) detected", Errors.NumOfErrors());
} finally {
lstWriter.Close();
lstWriter.Dispose();
} // try/finally
}
else
{
Console.WriteLine("no errors detected");
}
} finally {
if (Lex.src != null)
{
Lex.src.Close();
Lex.src.Dispose();
Lex.src = null;
} // if
Utils.Modules(Utils.ModuleAction.resetModule);
} // try/finally to make sure srcFs and srcReader are closed
return(Utils.EXIT_SUCCESS);
} // CompileFile
