Page Comparison

import org.antlr.runtime.CharStream;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.Token;
import org.antlr.runtime.TokenSource;
import org.antlr.tool.Grammar;

import java.util.LinkedHashMap;
import java.util.Map;

public class CharsAsTokens implements TokenSource {
	CharStream input;
	String[] tokenNames;
	int line=1;
	int charPosInLine;
	Map<Integer, Integer> charToTokenType = new LinkedHashMap<Integer, Integer>();

	public CharsAsTokens(CharStream input, String[] tokenNames) {
		this.input = input;
		this.tokenNames = tokenNames;
		int ttype = 0;
		for (String tname : tokenNames) {
			if ( tname.charAt(0)=='\'' ) {
				charToTokenType.put(Grammar.getCharValueFromGrammarCharLiteral(tname), ttype);
			}
			ttype++;
		}
		System.out.println(charToTokenType);
	}

	public Token nextToken() {
		Token t = null;
		consumeUnknown();
		int c = input.LA(1);
		int i = input.index();
		if ( c == CharStream.EOF ) {
			t = Token.EOF_TOKEN;
		}
		else {
			Integer	ttypeI = charToTokenType.get(c);
			t = new CommonToken(input, ttypeI, Token.DEFAULT_CHANNEL, i,  i);
		}
		t.setLine(line);
		t.setCharPositionInLine(charPosInLine);
		consume();
		return t;
	}

	protected void consumeUnknown() {
		int c = input.LA(1);
		Integer ttypeI = charToTokenType.get(c);
		while ( ttypeI==null && c != CharStream.EOF ) {
			System.err.println("no token type for char '"+(char)c+"'");
			c = consume();
			ttypeI = charToTokenType.get(c);
		}
	}

	protected int consume() {
		int c = input.LA(1);
		input.consume();
		if ( c == '\n' ) { charPosInLine = 0; line++; }
		charPosInLine++;
		return input.LA(1);
	}

	public String getSourceName() {
		return null;
	}
}

import org.antlr.runtime.*;
public class Test {
	public static void main(String[] args) throws Exception {
		CharStream in = null;
		if ( args.length>0 ) in = new ANTLRFileStream(args[0]);
		else in = new ANTLRInputStream(System.in);

		CharsAsTokens fauxLexer = new CharsAsTokens(in, T.tokenNames);
		CommonTokenStream tokens = new CommonTokenStream(fauxLexer);
		tokens.fill();
		System.out.println(tokens.getTokens());
		T parser = new T(tokens);
		parser.prog();
	}
}

return 23;
a = b;