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// 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
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* PlantUML is free software; you can redistribute it and/or modify it
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*/
package net.sourceforge.plantuml.ebnf;
import java.util.ArrayDeque;
import java.util.Deque;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.style.ISkinParam;
import net.sourceforge.plantuml.style.ISkinSimple;
import net.sourceforge.plantuml.style.PName;
import net.sourceforge.plantuml.style.Style;
public class EbnfEngine {
private final Deque stack = new ArrayDeque<>();
private final FontConfiguration fontConfiguration;
private final Style style;
private final HColorSet colorSet;
private final ISkinParam skinParam;
private final HColor lineColor;
public EbnfEngine(ISkinParam skinParam) {
this.skinParam = 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, skinParam));
}
public void optional() {
final ETile arg1 = stack.removeFirst();
stack.addFirst(new ETileOptional(arg1, skinParam));
}
public void repetitionZeroOrMore(boolean isCompact) {
final ETile arg1 = stack.removeFirst();
if (isCompact)
stack.addFirst(new ETileZeroOrMore(arg1));
else
stack.addFirst(new ETileOptional(new ETileOneOrMore(arg1), skinParam));
}
public void repetitionOneOrMore() {
final ETile arg1 = stack.removeFirst();
stack.addFirst(new ETileOneOrMore(arg1));
}
public void repetitionSymbol() {
final ETile arg1 = stack.removeFirst();
final String arg2 = stack.removeFirst().getRepetitionLabel() + "\u00D7";
stack.addFirst(new ETileOneOrMore(arg1, arg2, fontConfiguration.bigger(-2), skinParam));
}
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, skinParam);
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);
}
public void commentBelow(String comment) {
final ETile arg1 = stack.peekFirst();
if (arg1 == null)
throw new IllegalStateException();
arg1.addCommentBelow(comment);
}
public void commentAbove(String comment) {
final ETile arg1 = stack.peekFirst();
if (arg1 == null)
throw new IllegalStateException();
arg1.addCommentAbove(comment);
}
}
