lexertest.java

tiger run time supporting files

package tiger.parse;

import tiger.errormsg.ErrorMsg;
import java_cup.runtime.Symbol;
import java.io.*;

public class LexerTest {

	public static void main(String argv[]) throws IOException {

		String filename = "lextest.txt";
		ErrorMsg errorMsg = new ErrorMsg(filename);
		InputStream inp = new FileInputStream(filename);
		Yylex lexer = new Yylex(inp, errorMsg);
		Symbol tok;

		do {
			tok = lexer.next_token();
			System.out.println(symnames[tok.sym] + " " + tok.left);
		} while (tok.sym != sym.EOF);

		inp.close();
	}

	static String symnames[] = new String[100];
	static {

		symnames[sym.FUNCTION] = "FUNCTION";
		symnames[sym.EOF] = "EOF";
		symnames[sym.INT] = "INT";
		symnames[sym.GT] = "GT";
		symnames[sym.DIVIDE] = "DIVIDE";
		symnames[sym.COLON] = "COLON";
		symnames[sym.ELSE] = "ELSE";
		symnames[sym.OR] = "OR";
		symnames[sym.NIL] = "NIL";
		symnames[sym.DO] = "DO";
		symnames[sym.GE] = "GE";
		symnames[sym.error] = "error";
		symnames[sym.LT] = "LT";
		symnames[sym.OF] = "OF";
		symnames[sym.MINUS] = "MINUS";
		symnames[sym.ARRAY] = "ARRAY";
		symnames[sym.TYPE] = "TYPE";
		symnames[sym.FOR] = "FOR";
		symnames[sym.TO] = "TO";
		symnames[sym.TIMES] = "TIMES";
		symnames[sym.COMMA] = "COMMA";
		symnames[sym.LE] = "LE";
		symnames[sym.IN] = "IN";
		symnames[sym.END] = "END";
		symnames[sym.ASSIGN] = "ASSIGN";
		symnames[sym.STRING] = "STRING";
		symnames[sym.DOT] = "DOT";
		symnames[sym.LPAREN] = "LPAREN";
		symnames[sym.RPAREN] = "RPAREN";
		symnames[sym.IF] = "IF";
		symnames[sym.SEMICOLON] = "SEMICOLON";
		symnames[sym.ID] = "ID";
		symnames[sym.WHILE] = "WHILE";
		symnames[sym.LBRACK] = "LBRACK";
		symnames[sym.RBRACK] = "RBRACK";
		symnames[sym.NEQ] = "NEQ";
		symnames[sym.VAR] = "VAR";
		symnames[sym.BREAK] = "BREAK";
		symnames[sym.AND] = "AND";
		symnames[sym.PLUS] = "PLUS";
		symnames[sym.LBRACE] = "LBRACE";
		symnames[sym.RBRACE] = "RBRACE";
		symnames[sym.LET] = "LET";
		symnames[sym.THEN] = "THEN";
		symnames[sym.EQ] = "EQ";
	}
}