com.croftsoft.apps.compiler.mini.parse
Class MiniScanner

java.lang.Object
  com.croftsoft.apps.compiler.mini.parse.MiniScanner

All Implemented Interfaces:

CUPTokenScanner, MiniSymbols

public class MiniScanner
extends Object
implements MiniSymbols, CUPTokenScanner

Token scanner for the Mini programming language. Reference:

"JLex: A Lexical Analyzer Generator for Java"
http://www.cs.princeton.edu/~appel/modern/java/JLex/

Version:

1999-04-24

Author:

David W. Croft

Field Summary

Fields inherited from interface com.croftsoft.apps.compiler.mini.parse.MiniSymbols

$START, ASSIGN, assignmentStatement, BEGIN, block, CALL, COMMA, comparison, conditionalStatement, CONSTANT, declaration, declarationSequence, definiteLoop, DIVIDE, DO, element, ELSE, END, EOF, EQ, error, EXP, expression, expressionList, FI, GE, GT, IF, indefiniteLoop, inputStatement, INTEGER, LE, LPAREN, LT, MINUS, MOD, NAME, name1, nameList, NE, outputStatement, parameterList, PLUS, PROCEDURE, procedureCall, program, READ, relation, RPAREN, SEMICOLON, statement, statementSequence, strongOperator, term, THEN, TIMES, TO, UMINUS, weakOperator, WHILE, WRITE

Constructor Summary

MiniScanner(InputStream instream)

MiniScanner(Reader reader)

Method Summary

static void	main(String[] args)
Symbol	nextToken()
static Symbol	scanConstant(String text)
static void	test(Reader reader)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MiniScanner

public MiniScanner(Reader reader)

MiniScanner

public MiniScanner(InputStream instream)

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

test

public static void test(Reader reader)
                 throws Exception

Throws:

Exception

scanConstant

public static Symbol scanConstant(String text)

nextToken

public Symbol nextToken()
                 throws IOException

Specified by:

nextToken in interface CUPTokenScanner

Throws:

IOException