net.sourceforge.plantuml.logo.TinyJavaLogo Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* Original Author: Arnaud Roques
*
* Revision $Revision: 4041 $
*
*/
package net.sourceforge.plantuml.logo;
import java.util.HashMap;
import java.util.Map;
import net.sourceforge.plantuml.graphic.HtmlColor;
import net.sourceforge.plantuml.graphic.HtmlColorUtils;
public class TinyJavaLogo {
private final LogoScanner scanner = new LogoScanner();
private final TurtleGraphicsPane turtleGraphicsPane;
private final Map dictionary = new HashMap();
private HtmlColor penColor;
public TinyJavaLogo(TurtleGraphicsPane turtleGraphicsPane) {
this.turtleGraphicsPane = turtleGraphicsPane;
}
private void message(String messageText) {
//turtleGraphicsPane.message(messageText);
}
private void error(String messageText) {
turtleGraphicsPane.message("Error: " + messageText);
}
private void parseCommandBlock(int nestLevel) {
String commandName;
String code;
LogoToken token = scanner.getToken();
while (token.kind != LogoToken.END_OF_INPUT && token.kind != LogoToken.INVALID_TOKEN) {
switch (token.kind) {
case LogoToken.FORWARD:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.forward(token.value);
token = scanner.getToken();
} else {
error("FORWARD requires distance");
return;
}
break;
case LogoToken.BACK:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.back(token.value);
token = scanner.getToken();
} else {
error("BACK requires distance");
return;
}
break;
case LogoToken.LEFT:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.left(token.value);
token = scanner.getToken();
} else {
error("LEFT requires turn angle");
return;
}
break;
case LogoToken.RIGHT:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.right(token.value);
token = scanner.getToken();
} else {
error("RIGHT requires turn angle");
return;
}
break;
case LogoToken.PENUP:
turtleGraphicsPane.penUp();
token = scanner.getToken();
break;
case LogoToken.PENDOWN:
turtleGraphicsPane.penDown();
token = scanner.getToken();
break;
case LogoToken.HIDETURTLE:
turtleGraphicsPane.hideTurtle();
token = scanner.getToken();
break;
case LogoToken.SHOWTURTLE:
turtleGraphicsPane.showTurtle();
token = scanner.getToken();
break;
case LogoToken.CLEARSCREEN:
turtleGraphicsPane.clearScreen();
token = scanner.getToken();
break;
case LogoToken.REPEAT:
token = scanner.getToken();
if (token.kind != LogoToken.INTEGER) {
error("REPEAT requires positive integer count");
return;
}
int count = token.intValue;
token = scanner.getToken();
if (token.kind != '[') {
error("REPEAT requires block in []");
return;
}
final int blockStart = scanner.getPosition();
while (count-- > 0) {
scanner.setPosition(blockStart);
parseCommandBlock(nestLevel + 1);
}
token = scanner.getToken();
break;
case LogoToken.TO:
token = scanner.getToken();
if (token.kind != LogoToken.IDENTIFIER) {
error("TO requires name for new definition");
return;
}
commandName = token.lexeme;
if (dictionary.get(commandName) == null) {
message("Defining new command " + commandName);
} else {
message("Redefining command " + commandName);
}
code = scanner.getRestAsString();
dictionary.put(commandName, code);
token = scanner.getToken();
break;
case LogoToken.IDENTIFIER:
commandName = token.lexeme;
code = dictionary.get(commandName);
if (code == null) {
error("Undefined command " + commandName);
return;
}
final String savedCommand = scanner.getSourceString();
final int savedPosition = scanner.getPosition();
scanner.setSourceString(code);
parseCommandBlock(0);
scanner.setSourceString(savedCommand);
scanner.setPosition(savedPosition);
token = scanner.getToken();
break;
case LogoToken.SETPC:
token = scanner.getToken();
final HtmlColor newPenColor = HtmlColorUtils.getColorIfValid(token.lexeme);
if (newPenColor == null) {
error("Unrecognized color name");
return;
}
penColor = newPenColor;
turtleGraphicsPane.setPenColor(penColor);
token = scanner.getToken();
break;
case '[':
token = scanner.getToken();
break;
case ']':
if (nestLevel == 0) {
error("] without matching [");
token = scanner.getToken();
return;
}
return;
default:
error("Unrecognized symbol in input");
return;
}
}
}
public void doCommandLine(String commandLine) {
message(commandLine);
scanner.setSourceString(commandLine);
parseCommandBlock(0);
}
}