public static void Main( string[] args )
{
string filename = null;
bool printAST = false;
bool printASTtc = false;
foreach( string arg in args ) {
if (arg.StartsWith("-")) {
switch(arg) {
case "-ast":
printAST = true; break;
case "-tc":
printASTtc = true; break;
default:
Console.WriteLine("Unknown option {0}, ignored", arg);
break;
}
} else {
if (filename != null)
Usage();
filename = arg;
}
}
// require exactly one input file to be provided
if (filename == null)
Usage();
// require a filename suffix of .cb or .cs
if (!filename.EndsWith(".cb") && !filename.EndsWith(".cs"))
Usage();
AST tree = DoParse(filename);
if (tree == null) {
Console.WriteLine("\n-- no tree constructed");
return;
}
if (printAST) {
PrVisitor printVisitor = new PrVisitor();
tree.Accept(printVisitor);
}
int numErrors = 0;
// perform typechecking ...
TcVisitor typeCheckVisitor = new TcVisitor();
tree.Accept(typeCheckVisitor);
numErrors = typeCheckVisitor.NumErrors;
if (printASTtc) {
PrVisitor printVisitor = new PrVisitor();
tree.Accept(printVisitor); // print AST with datatype annotations
}
// generate intermediate code
if (numErrors > 0) {
Console.WriteLine("\n{0} errors reported, compilation halted", numErrors);
return;
}
}
public static void Main( string[] args )
{
string filename = null;
bool printAST = false;
bool printASTtc = false;
foreach( string arg in args ) {
if (arg.StartsWith("-")) {
switch(arg) {
case "-ast":
printAST = true; break;
case "-tc":
printASTtc = true; break;
default:
Console.WriteLine("Unknown option {0}, ignored", arg);
break;
}
} else {
if (filename != null)
Usage();
filename = arg;
}
}
// require exactly one input file to be provided
if (filename == null)
Usage();
// require a filename suffix of .cb or .cs
if (!filename.EndsWith(".cb") && !filename.EndsWith(".cs"))
Usage();
AST tree = DoParse(filename);
if (tree == null) {
Console.WriteLine("\n-- no tree constructed");
return;
}
if (printAST) {
PrVisitor printVisitor = new PrVisitor();
tree.Accept(printVisitor);
}
int numErrors = 0;
// perform typechecking ...
TcVisitor typeCheckVisitor = new TcVisitor();
tree.Accept(typeCheckVisitor);
numErrors = typeCheckVisitor.NumErrors;
if (printASTtc) {
PrVisitor printVisitor = new PrVisitor();
tree.Accept(printVisitor); // print AST with datatype annotations
}
string asmFileName = filename.Substring(0,filename.Length-2)+"s";
BackEnd.GenCode cgen = new BackEnd.GenCode();
cgen.GenProgram(tree);
if (numErrors > 0) {
Console.WriteLine("\n{0} errors reported, compilation halted", numErrors);
return;
}
if (cgen.Asm != null) {
cgen.Asm.WriteCode(asmFileName);
Console.WriteLine("Assembler code written to {0}", asmFileName);
}
}