mirror of https://github.com/octoleo/plantuml.git
139 lines
4.4 KiB
Java
139 lines
4.4 KiB
Java
/* ========================================================================
|
|
* PlantUML : a free UML diagram generator
|
|
* ========================================================================
|
|
*
|
|
* (C) Copyright 2009-2020, Arnaud Roques
|
|
*
|
|
* Project Info: http://plantuml.com
|
|
*
|
|
* If you like this project or if you find it useful, you can support us at:
|
|
*
|
|
* http://plantuml.com/patreon (only 1$ per month!)
|
|
* http://plantuml.com/paypal
|
|
*
|
|
* 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.
|
|
*
|
|
*
|
|
* Original Author: Arnaud Roques
|
|
*
|
|
*
|
|
*/
|
|
package net.sourceforge.plantuml.ebnf;
|
|
|
|
import java.util.ArrayDeque;
|
|
import java.util.Deque;
|
|
|
|
import net.sourceforge.plantuml.ISkinParam;
|
|
import net.sourceforge.plantuml.ISkinSimple;
|
|
import net.sourceforge.plantuml.cucadiagram.Display;
|
|
import net.sourceforge.plantuml.graphic.FontConfiguration;
|
|
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
|
|
import net.sourceforge.plantuml.graphic.TextBlock;
|
|
import net.sourceforge.plantuml.style.PName;
|
|
import net.sourceforge.plantuml.style.Style;
|
|
import net.sourceforge.plantuml.ugraphic.color.HColor;
|
|
import net.sourceforge.plantuml.ugraphic.color.HColorSet;
|
|
|
|
public class EbnfEngine {
|
|
|
|
private final Deque<ETile> stack = new ArrayDeque<>();
|
|
private final FontConfiguration fontConfiguration;
|
|
private final Style style;
|
|
private final HColorSet colorSet;
|
|
private final ISkinSimple spriteContainer;
|
|
private final HColor lineColor;
|
|
|
|
public EbnfEngine(ISkinParam skinParam) {
|
|
this.spriteContainer = skinParam;
|
|
this.style = ETile.getStyleSignature().getMergedStyle(skinParam.getCurrentStyleBuilder());
|
|
this.fontConfiguration = style.getFontConfiguration(skinParam.getIHtmlColorSet());
|
|
this.colorSet = skinParam.getIHtmlColorSet();
|
|
this.lineColor = style.value(PName.LineColor).asColor(skinParam.getIHtmlColorSet());
|
|
|
|
}
|
|
|
|
public void push(Token element) {
|
|
stack.addFirst(new ETileBox(element.getData(), element.getSymbol(), fontConfiguration, style, colorSet));
|
|
}
|
|
|
|
public void optional() {
|
|
final ETile arg1 = stack.removeFirst();
|
|
stack.addFirst(new ETileOptional(arg1));
|
|
}
|
|
|
|
public void repetitionZeroOrMore(boolean isTheo) {
|
|
final ETile arg1 = stack.removeFirst();
|
|
if (isTheo)
|
|
stack.addFirst(new ETileOptional(new ETileOneOrMore(arg1)));
|
|
else
|
|
stack.addFirst(new ETileZeroOrMore(arg1));
|
|
}
|
|
|
|
public void repetitionOneOrMore() {
|
|
final ETile arg1 = stack.removeFirst();
|
|
stack.addFirst(new ETileOneOrMore(arg1));
|
|
}
|
|
|
|
public void alternation() {
|
|
final ETile arg1 = stack.removeFirst();
|
|
final ETile arg2 = stack.removeFirst();
|
|
if (arg1 instanceof ETileAlternation) {
|
|
arg1.push(arg2);
|
|
stack.addFirst(arg1);
|
|
} else if (arg2 instanceof ETileAlternation) {
|
|
arg2.push(arg1);
|
|
stack.addFirst(arg2);
|
|
} else {
|
|
final ETile concat = new ETileAlternation();
|
|
concat.push(arg1);
|
|
concat.push(arg2);
|
|
stack.addFirst(concat);
|
|
}
|
|
}
|
|
|
|
public void concatenation() {
|
|
|
|
final ETile arg1 = stack.removeFirst();
|
|
final ETile arg2 = stack.removeFirst();
|
|
if (arg1 instanceof ETileConcatenation) {
|
|
arg1.push(arg2);
|
|
stack.addFirst(arg1);
|
|
} else if (arg2 instanceof ETileConcatenation) {
|
|
arg2.push(arg1);
|
|
stack.addFirst(arg2);
|
|
} else {
|
|
final ETile concat = new ETileConcatenation();
|
|
concat.push(arg1);
|
|
concat.push(arg2);
|
|
stack.addFirst(concat);
|
|
}
|
|
}
|
|
|
|
public TextBlock getTextBlock() {
|
|
if (stack.size() != 1)
|
|
return syntaxError(fontConfiguration, spriteContainer);
|
|
return new ETileWithCircles(stack.peekFirst(), lineColor);
|
|
}
|
|
|
|
public static TextBlock syntaxError(FontConfiguration fontConfiguration, ISkinSimple spriteContainer) {
|
|
final Display msg = Display.create("Syntax error!");
|
|
return msg.create(fontConfiguration, HorizontalAlignment.LEFT, spriteContainer);
|
|
}
|
|
|
|
}
|