/**
* Converts an int token code into the name of the token by reflection on the cup symbol
* class/interface sym
*
* <p>This code was contributed by Karl Meissner <*****@*****.**>
*/
private String getTokenName(int token) {
try {
java.lang.reflect.Field[] classFields = GFinalCoordSym.class.getFields();
for (int i = 0; i < classFields.length; i++) {
if (classFields[i].getInt(null) == token) {
return classFields[i].getName();
}
}
} catch (Exception e) {
e.printStackTrace(System.err);
}
return "UNKNOWN TOKEN";
}
/**
* Runs the scanner on input files.
*
* <p>This is a standalone scanner, it will print any unmatched text to System.out unchanged.
*
* @param argv the command line, contains the filenames to run the scanner on.
*/
public static void main(String argv[]) {
if (argv.length == 0) {
System.out.println("Usage : java GFinalCoordLexer <inputfile>");
} else {
for (int i = 0; i < argv.length; i++) {
GFinalCoordLexer scanner = null;
try {
scanner = new GFinalCoordLexer(new java.io.FileReader(argv[i]));
while (!scanner.zzAtEOF) scanner.next_token();
} catch (java.io.FileNotFoundException e) {
System.out.println("File not found : \"" + argv[i] + "\"");
} catch (java.io.IOException e) {
System.out.println("IO error scanning file \"" + argv[i] + "\"");
System.out.println(e);
} catch (Exception e) {
System.out.println("Unexpected exception:");
e.printStackTrace();
}
}
}
}
public static void main(String[] args) throws IOException // may be thrown by the scanner
{
// check for command-line args
if (args.length != 2) {
System.err.println(
"please supply name of file to be parsed and name of file for unparsed version.");
System.exit(-1);
}
try {
Codegen.p = new PrintWriter("/home/ben/Scripts/github/Academic/cs 536/p6/gencode.asm");
} catch (FileNotFoundException e) {
System.err.println("File " + args[0] + " not found.");
System.exit(-1);
}
// open input file
FileReader inFile = null;
try {
inFile = new FileReader(args[0]);
} catch (FileNotFoundException ex) {
System.err.println("File " + args[0] + " not found.");
System.exit(-1);
}
// open output file
PrintWriter outFile = null;
try {
outFile = new PrintWriter(args[1]);
} catch (FileNotFoundException ex) {
System.err.println("File " + args[1] + " could not be opened for writing.");
System.exit(-1);
}
parser P = new parser(new Yylex(inFile));
Symbol root = null; // the parser will return a Symbol whose value
// field is the translation of the root
// nonterminal (i.e., of the nonterminal
// "program")
try {
root = P.parse(); // do the parse
System.out.println("Little program parsed correctly.");
} catch (Exception ex) {
System.err.println("Exception occured during parse: " + ex);
ex.printStackTrace();
System.exit(-1);
}
try {
// ((SymTabNode)root.value).provideSymTab(new SymTab());
((ProgramNode) root.value).processNames();
} catch (Exception ex) {
System.err.println("Exception occured during parse: " + ex);
ex.printStackTrace();
System.exit(-1);
}
if (!Errors.errors) {
((ASTnode) root.value).unparse(outFile, 0);
try {
((ProgramNode) root.value).typeCheck();
} catch (Exception ex) {
System.err.println("Exception occured during typecheck: " + ex);
ex.printStackTrace();
System.exit(-1);
}
}
if (!Errors.errors) {
try {
((ProgramNode) root.value).generate();
Codegen.p.close();
} catch (Exception ex) {
System.err.println("Exception occured during codegen: " + ex);
ex.printStackTrace();
System.exit(-1);
}
}
outFile.close();
return;
}
