2003-06-01 19:49:04 +00:00
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/*
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* AppleCommander - An Apple ][ image utility.
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* Copyright (C) 2003 by Robert Greene
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* robgreene at users.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package com.webcodepro.applecommander.compiler;
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import com.webcodepro.applecommander.storage.FileEntry;
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import com.webcodepro.applecommander.util.ApplesoftToken;
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import com.webcodepro.applecommander.util.ApplesoftTokenizer;
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import com.webcodepro.applecommander.util.ApplesoftTokens;
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2003-06-03 05:47:57 +00:00
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import java.io.IOException;
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import java.io.InputStream;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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2003-06-01 19:49:04 +00:00
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import java.util.ArrayList;
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2003-06-03 05:47:57 +00:00
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import java.util.Enumeration;
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2003-06-01 19:49:04 +00:00
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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2003-06-03 05:47:57 +00:00
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import java.util.Properties;
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2003-06-01 19:49:04 +00:00
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/**
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* Compile the given file as an Applesoft file.
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* <p>
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* Date created: Nov 2, 2002 10:04:10 PM
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* @author: Rob Greene
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*/
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public class ApplesoftCompiler implements ApplesoftTokens {
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private ApplesoftTokenizer tokenizer;
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2003-06-03 05:47:57 +00:00
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private ApplesoftToken tokenAlreadySeen;
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private StringBuffer sourceAssembly = new StringBuffer();
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private StringBuffer sourceLine = new StringBuffer();
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/**
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* Contains a list of all known Apple ROM addresses that may be used
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* by the compiled program. This map is keyed by the name of the
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* address and the value is the address.
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*/
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private Map knownAddresses = new HashMap();
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/**
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* Lists the names of all addresses used by the compiled program.
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* To identify the value, use the knownAddresses map.
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*/
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private List usedAddresses = new ArrayList();
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/**
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* Contains a list of all variables declared or used by the
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* program.
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*/
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private List variables = new ArrayList();
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/**
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* Dynamically created map of commands to Methods.
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*/
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private Map commandMethods = new HashMap();
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2003-06-01 19:49:04 +00:00
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/**
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* Constructor for ApplesoftCompiler.
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*/
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public ApplesoftCompiler(FileEntry fileEntry) {
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super();
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tokenizer = new ApplesoftTokenizer(fileEntry);
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2003-06-03 05:47:57 +00:00
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initializeKnownAddresses();
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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2003-06-01 19:49:04 +00:00
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/**
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2003-06-03 05:47:57 +00:00
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* Load known memory addresses from AppleMemoryAddresses.properties.
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2003-06-01 19:49:04 +00:00
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*/
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2003-06-03 05:47:57 +00:00
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protected void initializeKnownAddresses() {
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InputStream inputStream =
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getClass().getResourceAsStream("AppleMemoryAddresses.properties");
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Properties properties = new Properties();
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try {
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properties.load(inputStream);
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Enumeration keys = properties.keys();
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while (keys.hasMoreElements()) {
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String key = (String) keys.nextElement();
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knownAddresses.put(key, properties.getProperty(key));
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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} catch (IOException ex) {
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ex.printStackTrace();
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2003-06-01 19:49:04 +00:00
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}
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}
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/**
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2003-06-03 05:47:57 +00:00
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* Answers true if there are more tokens to process.
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2003-06-01 19:49:04 +00:00
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*/
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2003-06-03 05:47:57 +00:00
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protected boolean hasMoreTokens() {
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return peekToken() != null;
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2003-06-01 19:49:04 +00:00
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}
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/**
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2003-06-03 05:47:57 +00:00
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* Get the next token.
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2003-06-01 19:49:04 +00:00
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*/
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2003-06-03 05:47:57 +00:00
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protected ApplesoftToken nextToken() {
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ApplesoftToken token = tokenAlreadySeen;
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if (tokenAlreadySeen != null) {
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tokenAlreadySeen = null;
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2003-06-01 19:49:04 +00:00
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} else {
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2003-06-03 05:47:57 +00:00
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token = tokenizer.getNextToken();
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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if (token == null) {
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// No more tokens
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} else if (token.isLineNumber()) {
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sourceLine.append("* ");
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sourceLine.append(token.getLineNumber());
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sourceLine.append(" ");
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} else if (token.isToken()) {
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sourceLine.append(token.getTokenString());
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} else if (token.isString()) {
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sourceLine.append(token.getStringValue());
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}
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return token;
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2003-06-01 19:49:04 +00:00
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}
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/**
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2003-06-03 05:47:57 +00:00
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* Take a peek at the next token.
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*/
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protected ApplesoftToken peekToken() {
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if (tokenAlreadySeen == null) {
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tokenAlreadySeen = tokenizer.getNextToken();
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}
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return tokenAlreadySeen;
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}
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/**
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* Compile the given FileEntry and return the assembly code.
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2003-06-01 19:49:04 +00:00
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*/
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2003-06-03 05:47:57 +00:00
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public byte[] compile() throws CompileException {
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StringBuffer programCode = new StringBuffer();
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while (hasMoreTokens()) {
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ApplesoftToken token = nextToken();
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if (!token.isLineNumber()) {
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throw new CompileException("Expecting a line number.");
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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sourceAssembly.append("LINE");
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sourceAssembly.append(token.getLineNumber());
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sourceAssembly.append(":\n");
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do {
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evaluateCommand();
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token = peekToken();
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if (token != null && token.isCommandSeparator()) {
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token = nextToken();
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}
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} while (token != null && token.isCommandSeparator());
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programCode.append(sourceLine);
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programCode.append("\n");
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programCode.append(sourceAssembly);
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programCode.append("\n");
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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sourceLine.setLength(0);
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sourceAssembly.setLength(0);
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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programCode.insert(0, buildUsedAddresses());
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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for (int i=0; i<variables.size(); i++) {
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if (i == 0) {
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sourceAssembly.append("\n");
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sourceAssembly.append("* Variables:\n");
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}
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Variable variable = (Variable) variables.get(i);
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if (variable.isConstantInteger()) {
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addAssembly(variable.getName(), "DW", variable.getValue());
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} else if (variable.isConstantFloat()) {
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// FIXME
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} else if (variable.isConstantString()) {
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addAssembly(variable.getName(), "ASC", variable.getValue());
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addAssembly(null, "HEX", "00");
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} else if (variable.isTypeFloat()) {
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addAssembly(variable.getName(), "DS", "5");
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} else if (variable.isTypeInteger()) {
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addAssembly(variable.getName(), "DS", "2");
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} else if (variable.isTypeString()) {
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// FIXME
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}
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}
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programCode.append(sourceAssembly);
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sourceLine.setLength(0);
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sourceAssembly.setLength(0);
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2003-06-03 05:47:57 +00:00
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return programCode.toString().getBytes();
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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protected StringBuffer buildUsedAddresses() {
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StringBuffer buf = new StringBuffer();
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if (usedAddresses.size() > 0) {
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buf.append("* Addresses:\n");
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for (int i=0; i<usedAddresses.size(); i++) {
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String label = (String) usedAddresses.get(i);
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buf.append(label);
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buf.append(" = ");
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buf.append((String) knownAddresses.get(label));
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buf.append("\n");
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}
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buf.append("\n");
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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return buf;
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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protected void evaluateCommand() {
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ApplesoftToken token = nextToken();
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while (token != null && token.isCommandSeparator()) {
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token = nextToken();
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}
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if (token == null || !token.isToken()) {
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return; // end of line (no command on line...)
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}
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Method method = getMethod(token);
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if (method != null) {
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try {
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method.invoke(this, new Object[0]);
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} catch (IllegalArgumentException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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2003-06-01 19:49:04 +00:00
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}
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} else {
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2003-06-03 05:47:57 +00:00
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// FIXME: Just during development - this should throw an exception!
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while (peekToken() != null && !peekToken().isCommandSeparator() && !peekToken().isLineNumber()) {
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nextToken();
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}
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2003-06-01 19:49:04 +00:00
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}
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}
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2003-06-03 05:47:57 +00:00
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protected Method getMethod(ApplesoftToken token) {
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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StringBuffer buf = new StringBuffer();
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buf.append("evaluate");
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buf.append(token.getTokenString().trim());
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for (int i=buf.length()-1; i>=0; i--) {
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if (buf.charAt(i) == '=') {
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buf.deleteCharAt(i);
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}
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}
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String tokenName = buf.toString();
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2003-06-03 05:47:57 +00:00
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Method method = (Method) commandMethods.get(tokenName);
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if (method == null) {
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try {
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method = getClass().getMethod(tokenName, new Class[0]);
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commandMethods.put(tokenName, method);
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} catch (SecurityException e) {
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e.printStackTrace();
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return null;
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} catch (NoSuchMethodException e) {
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// This is actually valid (during development anyway)
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//e.printStackTrace();
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return null;
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2003-06-01 19:49:04 +00:00
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}
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}
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2003-06-03 05:47:57 +00:00
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return method;
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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protected void addAssembly(String label, String mnemonic, String parameter) {
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if (label != null) {
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sourceAssembly.append(label);
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sourceAssembly.append(":\n");
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}
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if (mnemonic != null) {
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sourceAssembly.append(" ");
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sourceAssembly.append(mnemonic);
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if (parameter != null) {
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sourceAssembly.append(" ");
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sourceAssembly.append(parameter);
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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if (!usedAddresses.contains(parameter)
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&& knownAddresses.containsKey(parameter)) {
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2003-06-03 05:47:57 +00:00
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usedAddresses.add(parameter);
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}
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}
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sourceAssembly.append("\n");
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}
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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public void evaluateHOME() {
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addAssembly(null, "JSR", "HOME");
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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public void evaluateTEXT() {
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addAssembly(null, "JSR", "TEXT");
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}
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public void evaluateRETURN() {
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addAssembly(null, "RTS", null);
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}
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public void evaluateEND() {
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evaluateRETURN();
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}
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public void evaluateHGR() {
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addAssembly(null, "JSR", "HGR");
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}
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public void evaluateHGR2() {
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addAssembly(null, "JSR", "HGR2");
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}
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public void evaluateGR() {
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addAssembly(null, "JSR", "GR");
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2003-06-01 19:49:04 +00:00
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}
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2003-06-03 05:47:57 +00:00
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public void evaluateINVERSE() {
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addAssembly(null, "LDA", "#$3F");
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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addAssembly(null, "STA", "INVFLAG");
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2003-06-03 05:47:57 +00:00
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}
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public void evaluateNORMAL() {
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addAssembly(null, "LDA", "#$FF");
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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addAssembly(null, "STA", "INVFLAG");
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2003-06-03 05:47:57 +00:00
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}
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public void evaluateFLASH() {
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addAssembly(null, "LDA", "#$7F");
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Added support for FLASH, HCOLOR=, HTAB, INVERSE, NORMAL,
PRINT, VTAB.
Added methods addLoadAddress, addLoadByteValue, addLoadFac,
addLoadWordValue, evaluateExpression.
Memory listing is read from properties file.
2003-06-06 03:28:44 +00:00
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addAssembly(null, "STA", "INVFLAG");
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}
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protected Variable evaluateExpression() throws CompileException {
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// FIXME: no type checking available
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// FIXME: needs to evaluate all valid expressions
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ApplesoftToken token = nextToken();
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if (token.isString()) {
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String value = token.getStringValue();
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Variable variable = null;
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for (int i=0; i<variables.size(); i++) {
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variable = (Variable) variables.get(i);
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if (value.equals(variable.getValue())) {
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break;
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}
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variable = null;
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}
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if (variable == null) {
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if (isIntegerNumber(value)) {
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variable = new Variable("INT" + value, Variable.CONST_INTEGER, value);
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} else if (value.startsWith("\"")) {
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variable = new Variable("STR" + variables.size(), Variable.CONST_STRING, value);
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} else { // assume variable name
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if (value.endsWith("%")) {
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variable = new Variable("VAR" + value, Variable.TYPE_INTEGER, value);
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} else if (value.endsWith("$")) {
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variable = new Variable("VAR" + value, Variable.TYPE_STRING, value);
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} else {
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variable = new Variable("VAR" + value, Variable.TYPE_FLOAT, value);
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}
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}
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variables.add(variable);
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}
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return variable;
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} else {
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throw new CompileException("Unable to evaluate expression!");
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}
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}
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protected void addLoadByteValue(Variable variable, char register) throws CompileException {
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if (variable.isConstantInteger()) {
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addAssembly(null, "LD" + register, "#" + variable.getValue());
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} else if(variable.isTypeInteger()) {
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addAssembly(null, "LD" + register, variable.getName());
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} else if (variable.isConstantFloat() || variable.isTypeFloat()) {
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addAssembly(null, "LDY", "#>" + variable.getName());
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addAssembly(null, "LDA", "#<" + variable.getName());
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addAssembly(null, "JSR","MOVFM");
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addAssembly(null, "JSR", "QINT");
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addAssembly(null, "LD" + register, "FACLO");
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} else {
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throw new CompileException("Unable to convert to a byte value: "
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+ variable.getName());
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}
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}
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protected void addLoadWordValue(Variable variable, char registerHi, char registerLo) throws CompileException {
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if (variable.isConstantInteger()) {
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addAssembly(null, "LD" + registerHi, "#>" + variable.getName());
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addAssembly(null, "LD" + registerLo, "#<" + variable.getName());
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} else if (variable.isTypeInteger()) {
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addAssembly(null, "LD" + registerHi, variable.getName() + "+1");
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addAssembly(null, "LD" + registerLo, variable.getName());
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} else if (variable.isConstantFloat() || variable.isTypeFloat()) {
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addLoadFac(variable);
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addAssembly(null, "JSR", "QINT");
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addAssembly(null, "LD" + registerHi, "FACMO");
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addAssembly(null, "LD" + registerLo, "FACLO");
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} else {
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throw new CompileException("Unable to convert to a word value: "
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+ variable.getName());
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}
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}
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protected void addLoadAddress(Variable variable, char registerHi, char registerLo) {
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addAssembly(null, "LD" + registerHi, "#>" + variable.getName());
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addAssembly(null, "LD" + registerLo, "#<" + variable.getName());
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}
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protected void addLoadFac(Variable variable) throws CompileException {
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if (variable.isConstantFloat() || variable.isTypeFloat()) {
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addAssembly(null, "LDY", "#>" + variable.getName());
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addAssembly(null, "LDA", "#<" + variable.getName());
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addAssembly(null, "JSR","MOVFM");
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} else {
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throw new CompileException("Unable to convert to load FAC for: "
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+ variable.getName());
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}
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}
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public void evaluateHTAB() throws CompileException {
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addLoadByteValue(evaluateExpression(), 'A');
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addAssembly(null, "STA", "CH");
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}
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public void evaluateVTAB() throws CompileException {
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addLoadByteValue(evaluateExpression(), 'X');
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addAssembly(null, "DEX", null);
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addAssembly(null, "STX", "CV");
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addAssembly(null, "JSR", "LF");
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}
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public void evaluateHCOLOR() throws CompileException {
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addLoadByteValue(evaluateExpression(), 'X');
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addAssembly(null, "JSR", "SETHCOL");
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}
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public void evaluatePRINT() throws CompileException {
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ApplesoftToken token = null;
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do {
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Variable variable = evaluateExpression();
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if (variable.isConstantFloat() || variable.isTypeFloat()) {
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addLoadFac(variable);
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addAssembly(null, "JSR", "PRNTFAC");
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} else if (variable.isConstantInteger() || variable.isTypeInteger()) {
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addLoadWordValue(variable, 'X', 'A');
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addAssembly(null, "JSR", "LINPRT");
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} else if (variable.isConstantString()) {
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addLoadAddress(variable, 'Y', 'A');
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addAssembly(null, "JSR", "STROUT");
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} else if (variable.isTypeString()) {
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throw new CompileException("Unable to print string variables yet.");
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}
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|
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// check if we have separators to skip over...
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|
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token = peekToken();
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if (token != null && token.isExpressionSeparator()) {
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nextToken();
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}
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// see if we should continue processing the print statement
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|
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token = peekToken();
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|
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} while (token != null && !token.isEndOfCommand());
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}
|
|
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|
|
/**
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|
|
|
* Indicates if this string is a number.
|
|
|
|
*/
|
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|
|
protected boolean isIntegerNumber(String value) {
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|
|
for (int i=0; i<value.length(); i++) {
|
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|
|
if (!Character.isDigit(value.charAt(i))) {
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|
|
return false;
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|
|
}
|
|
|
|
}
|
|
|
|
return true;
|
2003-06-03 05:47:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// /**
|
|
|
|
// * Process and individual token.
|
|
|
|
// */
|
|
|
|
// protected void processToken(StringBuffer sourceAssembly,
|
|
|
|
// StringBuffer sourceLine, ApplesoftToken token, ApplesoftTokenizer tokenizer) {
|
|
|
|
// String expr = null;
|
|
|
|
// switch (token.getTokenValue()) {
|
|
|
|
// case FOR:
|
|
|
|
// String loopVariable = evaluateExpression(sourceAssembly, sourceLine);
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|
|
|
// if (!isFloatVariable(loopVariable)) {
|
|
|
|
// throw new IllegalArgumentException("FOR loop argument must be a float");
|
|
|
|
// }
|
|
|
|
// token = tokenizer.getNextToken();
|
|
|
|
// if (token.getTokenValue() != EQUALS) {
|
|
|
|
// throw new IllegalArgumentException("FOR requires =");
|
|
|
|
// }
|
|
|
|
// sourceLine.append(token.getTokenString());
|
|
|
|
// String startValue = evaluateExpression(sourceAssembly, sourceLine);
|
|
|
|
// token = tokenizer.getNextToken();
|
|
|
|
// if (token.getTokenValue() != TO) {
|
|
|
|
// throw new IllegalArgumentException("FOR requires TO");
|
|
|
|
// }
|
|
|
|
// sourceLine.append(token.getTokenString());
|
|
|
|
// String endValue = evaluateExpression(sourceAssembly, sourceLine);
|
|
|
|
// if (isFloatVariable(loopVariable)) {
|
|
|
|
// // FIXME: Assumes start/end are integer
|
|
|
|
// sourceAssembly.append("\tLDY ");
|
|
|
|
// sourceAssembly.append(startValue);
|
|
|
|
// sourceAssembly.append("\n");
|
|
|
|
// sourceAssembly.append("\tLDA ");
|
|
|
|
// sourceAssembly.append(startValue);
|
|
|
|
// sourceAssembly.append("\n");
|
|
|
|
// sourceAssembly.append("\tJSR $E2F2 ; GIVAYF\n");
|
|
|
|
// sourceAssembly.append("\tLDY #>");
|
|
|
|
// sourceAssembly.append(loopVariable);
|
|
|
|
// sourceAssembly.append("\n");
|
|
|
|
// sourceAssembly.append("\tLDX #<");
|
|
|
|
// sourceAssembly.append(loopVariable);
|
|
|
|
// sourceAssembly.append("\n");
|
|
|
|
// sourceAssembly.append("\tJSR $EB2B ; MOVMF\n");
|
|
|
|
// }
|
|
|
|
// break;
|
|
|
|
// }
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
//
|
|
|
|
// protected String addIntegerConstant(String value) {
|
|
|
|
// String name = "INT" + value;
|
|
|
|
// if (!integerConstants.containsKey(name)) {
|
|
|
|
// integerConstants.put(name, value);
|
|
|
|
// }
|
|
|
|
// return name;
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
// protected String addStringConstant(String value) {
|
|
|
|
// String name = "STR" + stringConstants.size();
|
|
|
|
// if (stringConstants.containsValue(value)) {
|
|
|
|
// Iterator iterator = stringConstants.keySet().iterator();
|
|
|
|
// while (iterator.hasNext()) {
|
|
|
|
// String key = (String) iterator.next();
|
|
|
|
// String keyValue = (String) stringConstants.get(key);
|
|
|
|
// if (value.equals(keyValue)) {
|
|
|
|
// name = key;
|
|
|
|
// break;
|
|
|
|
// }
|
|
|
|
// }
|
|
|
|
// } else {
|
|
|
|
// stringConstants.put(name, value);
|
|
|
|
// }
|
|
|
|
// return name;
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
// protected String addVariable(String variableName) {
|
|
|
|
// if (variableName.endsWith("$")) {
|
|
|
|
// variableName = "STR" + variableName;
|
|
|
|
// if (!stringVariables.contains(variableName)) {
|
|
|
|
// stringVariables.add(variableName);
|
|
|
|
// }
|
|
|
|
// } else if (variableName.endsWith("%")) {
|
|
|
|
// variableName = "INT" + variableName;
|
|
|
|
// if (!integerVariables.contains(variableName)) {
|
|
|
|
// integerVariables.add(variableName);
|
|
|
|
// }
|
|
|
|
// } else {
|
|
|
|
// variableName = "FP" + variableName;
|
|
|
|
// if (!floatVariables.contains(variableName)) {
|
|
|
|
// floatVariables.add(variableName);
|
|
|
|
// }
|
|
|
|
// }
|
|
|
|
// return variableName;
|
|
|
|
// }
|
2003-06-01 19:49:04 +00:00
|
|
|
}
|