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/*
* CS 4481 Compilers
* Project 1 - scanner part 1
*
* This file contains the method runTests(). You will uncomment tests
* as you develop your scanner code
*/
package scanner;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
/**
* A different Main file will be used for grading, so you may make modifications
* as needed, but before submitting you should download a fresh copy of this
* file, uncomment the tests and make sure you pass them all.
*/
public class Main {
public static void main(String[] args)
throws FileNotFoundException, IOException {
if (args.length > 0) {
scanInputFile(args[0], args[1]);
} else {
runRegisterTests();
runHexTests();
System.out.println(tests.getSuccesses() + "/" + tests.getN() +
" tests succeeded");
int failures = tests.getFailures();
System.exit(failures);
}
}
private static void runRegisterTests()
throws FileNotFoundException, IOException {
// TODO: uncomment tests as you develop code
//------------------------------------------------------------
// Test register.table reading, table building and token
// parsing. These tests should pass once you have the Scanner
// constructor implemented.
//------------------------------------------------------------
String tableFile = "data/register.table";
TableReader tableReader = new TableReader(tableFile);
Scanner scanner = new Scanner(tableReader);
tests.test(scanner.getCategory('r').equals("register"));
tests.test(scanner.getCategory('3').equals("digit"));
tests.test(scanner.getCategory('8').equals("digit"));
tests.test(scanner.getCategory(' ').equals("whitespace"));
tests.test(scanner.getCategory('x').equals("not in alphabet"));
tests.test(scanner.getNewState("s0", "register").equals("s1"));
tests.test(scanner.getNewState("s1", "digit").equals("s2"));
tests.test(scanner.getNewState("s2", "digit").equals("s2"));
tests.test(scanner.getNewState("s0", "whitespace").equals("s3"));
tests.test(scanner.getNewState("s0", "digit").equals("error"));
tests.test(scanner.getNewState("s1", "register").equals("error"));
tests.test(scanner.getNewState("s2", "register").equals("error"));
tests.test(scanner.getTokenType("s0").equals("error"));
tests.test(scanner.getTokenType("s1").equals("error"));
tests.test(scanner.getTokenType("s2").equals("register"));
tests.test(scanner.getTokenType("s3").equals("ignore"));
//------------------------------------------------------------
// The following tests should pass once you have
// Scanner.nextToken() implemented.
//------------------------------------------------------------
{
ScanStream ss = getDataStream("data/test1-reg.txt");
testToken(scanner, ss, "register", "r302");
testToken(scanner, ss, "ignore");
testToken(scanner, ss, "register", "r02");
testToken(scanner, ss, "ignore");
testToken(scanner, ss, "register", "r233987");
}
{
ScanStream ss = getDataStream("data/err1-reg.txt");
testToken(scanner, ss, null);
}
{
ScanStream ss = getDataStream("data/err2-reg.txt");
testToken(scanner, ss, null);
}
{
ScanStream ss = getDataStream("data/err3-reg.txt");
testToken(scanner, ss, "register", "r33");
testToken(scanner, ss, null);
}
}
private static void runHexTests() throws FileNotFoundException, IOException {
// TODO: uncomment tests as you develop code
//------------------------------------------------------------
// Test register.table reading, table building and token
// parsing. These tests should pass once you have the Scanner
// constructor implemented.
//------------------------------------------------------------
String tableFile = "data/hexadecimal.table";
TableReader tableReader = new TableReader(tableFile);
Scanner scanner = new Scanner(tableReader);
tests.test(scanner.getCategory('x').equals("x"));
tests.test(scanner.getCategory('0').equals("zero"));
tests.test(scanner.getCategory('8').equals("digit"));
tests.test(scanner.getCategory('B').equals("digit"));
tests.test(scanner.getCategory(' ').equals("whitespace"));
tests.test(scanner.getCategory('z').equals("not in alphabet"));
tests.test(scanner.getNewState("s0", "zero").equals("s1"));
tests.test(scanner.getNewState("s1", "x").equals("s2"));
tests.test(scanner.getNewState("s2", "zero").equals("s3"));
tests.test(scanner.getNewState("s2", "digit").equals("s3"));
tests.test(scanner.getNewState("s3", "zero").equals("s3"));
tests.test(scanner.getNewState("s3", "digit").equals("s3"));
tests.test(scanner.getNewState("s0", "whitespace").equals("s4"));
tests.test(scanner.getNewState("s4", "whitespace").equals("s4"));
tests.test(scanner.getNewState("s0", "digit").equals("error"));
tests.test(scanner.getNewState("s1", "zero").equals("error"));
tests.test(scanner.getNewState("s2", "x").equals("error"));
tests.test(scanner.getTokenType("s0").equals("error"));
tests.test(scanner.getTokenType("s1").equals("error"));
tests.test(scanner.getTokenType("s2").equals("error"));
tests.test(scanner.getTokenType("s3").equals("hexnumber"));
tests.test(scanner.getTokenType("s4").equals("ignore"));
//------------------------------------------------------------
// The following tests should pass once you have
// Scanner.nextToken() implemented.
//------------------------------------------------------------
{
ScanStream ss = getDataStream("data/test1-hex.txt");
testToken(scanner, ss, "hexnumber", "0x3F");
testToken(scanner, ss, "ignore");
testToken(scanner, ss, "hexnumber", "0x1234");
testToken(scanner, ss, "ignore");
testToken(scanner, ss, "hexnumber", "0x1234567890ABCDEF");
}
{
ScanStream ss = getDataStream("data/err1-hex.txt");
testToken(scanner, ss, null);
}
{
ScanStream ss = getDataStream("data/err2-hex.txt");
testToken(scanner, ss, null);
}
{
ScanStream ss = getDataStream("data/err3-hex.txt");
testToken(scanner, ss, "hexnumber", "0x3A");
testToken(scanner, ss, null);
}
}
//--------------------------------------------------------------------------------
// Utility stuff
// You can ignore code from here to the end of the file.
//--------------------------------------------------------------------------------
static Tests tests = new Tests();
private static void testToken(Scanner scanner, ScanStream ss, String type,
String lexeme) {
try {
Token t = scanner.nextToken(ss);
if (type == null) {
tests.test(t == null, "expected lexical error");
} else {
tests.test(t.getType().equals(type),
t.getType() + " not equal to " + type);
}
if (lexeme != null) {
tests.test(t.getLexeme().equals(lexeme),
t.getLexeme() + " not equal to " + lexeme);
}
} catch (Exception e) {
System.out.println(e.toString());
tests.addFailure();
}
}
private static void testToken(Scanner scanner, ScanStream ss, String type) {
testToken(scanner, ss, type, null);
}
private static ScanStream getDataStream(String testFile) throws IOException {
File file = new File(testFile);
FileInputStream fis = new FileInputStream(file);
byte[] data = new byte[(int)file.length()];
fis.read(data);
fis.close();
ScanStream ss = new ScanStream(data);
return ss;
}
public static void scanInputFile(String tableFile, String testFile)
throws FileNotFoundException, IOException {
TableReader tableReader = new TableReader(tableFile);
File file = new File(testFile);
FileInputStream fis = new FileInputStream(file);
byte[] data = new byte[(int)file.length()];
fis.read(data);
fis.close();
PrintWriter writer = new PrintWriter(testFile + ".out", "UTF-8");
Scanner scanner = new Scanner(tableReader);
ScanStream ss = new ScanStream(data);
Token t;
do {
t = scanner.nextToken(ss);
if (t == null) {
System.out.println("Lexical error: " + ss.next());
ss.rollback();
writer.println("Lexical error: " + ss.next());
} else if (!t.getType().equals("ignore")) {
System.out.println(t.toString());
writer.println(t.toString());
}
} while (t != null && !ss.eof());
writer.close();
}
}
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