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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
* |
* +=======================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/liberapay (only 1€ per month!)
* https://plantuml.com/paypal
*
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License V2.
*
* THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
* LICENSE ("AGREEMENT"). [GNU General Public License V2]
*
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
*
* You may obtain a copy of the License at
*
* https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* PlantUML can occasionally display sponsored or advertising messages. Those
* messages are usually generated on welcome or error images and never on
* functional diagrams.
* See https://plantuml.com/professional if you want to remove them
*
* Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
* are owned by the author of their corresponding sources code (that is, their
* textual description in PlantUML language). Those images are not covered by
* this GPL v2 license.
*
* The generated images can then be used without any reference to the GPL v2 license.
* It is not even necessary to stipulate that they have been generated with PlantUML,
* although this will be appreciated by the PlantUML team.
*
* There is an exception : if the textual description in PlantUML language is also covered
* by any license, then the generated images are logically covered
* by the very same license.
*
* This is the IGY distribution (Install GraphViz by Yourself).
* You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
* (see https://plantuml.com/graphviz-dot )
*
* Icons provided by OpenIconic : https://useiconic.com/open
* Archimate sprites provided by Archi : http://www.archimatetool.com
* Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
* Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
* ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
* ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
* CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
* Brotli (c) by the Brotli Authors https://github.com/google/brotli
* Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
* Twemoji (c) by Twitter at https://twemoji.twitter.com/
*
*/
package net.sourceforge.plantuml.logo;
import java.util.HashMap;
import java.util.Map;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
public class TinyJavaLogo {
private final LogoScanner scanner = new LogoScanner();
private final TurtleGraphicsPane turtleGraphicsPane;
private final Map dictionary = new HashMap();
private HColor 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();
String s = token.lexeme;
final HColor newPenColor = s == null ? null : HColorSet.instance().getColorOrWhite(s);
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);
}
}