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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 2009-2024, 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/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.style.parser;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import net.sourceforge.plantuml.style.AutomaticCounter;
import net.sourceforge.plantuml.style.PName;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.style.StyleScheme;
import net.sourceforge.plantuml.style.Value;
import net.sourceforge.plantuml.style.ValueImpl;
import net.sourceforge.plantuml.utils.BlocLines;
import net.sourceforge.plantuml.utils.CharInspector;
import net.sourceforge.plantuml.utils.Inspector;
import net.sourceforge.plantuml.utils.InspectorUtils;
public class StyleParser {
public static Collection"))
continue;
if (ins.peek(0).getType() == StyleTokenType.COMMA) {
final String full = token.getData() + readWithComma(ins);
skipNewLines(ins);
if (ins.peek(0).getType() == StyleTokenType.OPEN_BRACKET) {
context = context.push(full);
ins.jump();
continue;
}
throw new IllegalStateException();
}
if (token.getType() == StyleTokenType.STRING) {
String full = token.getData();
if (ins.peek(0).getType() == StyleTokenType.STAR) {
ins.jump();
full += "*";
}
skipNewLines(ins);
if (ins.peek(0).getType() == StyleTokenType.OPEN_BRACKET) {
context = context.push(full);
ins.jump();
continue;
}
skipColon(ins);
if (token.getData().startsWith("--")) {
variables.learn(token.getData(), readValue(ins));
} else if (ins.peek(0).getType() == StyleTokenType.STRING) {
final String valueString = variables.value(readValue(ins));
final String keyString = token.getData();
final PName key = PName.getFromName(keyString, scheme);
if (key == null) {
// System.err.println("Error with key " + keyString);
} else {
final Value value = scheme == StyleScheme.REGULAR ? //
ValueImpl.regular(valueString, counter) : ValueImpl.dark(valueString, counter);
context.putInContext(key, value);
}
} else {
throw new StyleParsingException("parsing");
}
} else if (token.getType() == StyleTokenType.CLOSE_BRACKET) {
for (Style st : context.toStyles())
result.add(st);
if (context.size() > 0)
context = context.pop();
} else if (token.getType() == StyleTokenType.AROBASE_MEDIA) {
scheme = StyleScheme.DARK;
continue;
} else if (token.getType() == StyleTokenType.COLON && ins.peek(0).getType() == StyleTokenType.STRING
&& ins.peek(1).getType() == StyleTokenType.OPEN_BRACKET) {
final String full = token.getData() + ins.peek(0).getData();
context = context.push(full);
ins.jump();
ins.jump();
continue;
} else if (token.getType() == StyleTokenType.COLON && ins.peek(0).getType() == StyleTokenType.STRING
&& ins.peek(1).getType() == StyleTokenType.STAR
&& ins.peek(2).getType() == StyleTokenType.OPEN_BRACKET) {
final String full = token.getData() + ins.peek(0).getData() + ins.peek(1).getData();
context = context.push(full);
ins.jump();
ins.jump();
ins.jump();
continue;
} else if (token.getType() == StyleTokenType.OPEN_BRACKET) {
throw new StyleParsingException("Invalid open bracket");
} else {
throw new IllegalStateException(token.toString());
}
}
return Collections.unmodifiableList(result);
}
private static String readWithComma(Inspector ins) {
final StringBuilder result = new StringBuilder();
while (ins.peek(0) != null) {
final StyleToken current = ins.peek(0);
if (current.getType() != StyleTokenType.STRING && current.getType() != StyleTokenType.COMMA)
return result.toString();
result.append(current.getData());
ins.jump();
}
return result.toString();
}
private static String readValue(Inspector ins) throws StyleParsingException {
final StringBuilder result = new StringBuilder();
while (ins.peek(0) != null) {
final StyleToken current = ins.peek(0);
if (current.getType() == StyleTokenType.NEWLINE || current.getType() == StyleTokenType.SEMICOLON
|| current.getType() == StyleTokenType.CLOSE_BRACKET)
return result.toString();
if (current.getType() == StyleTokenType.STRING) {
if (result.length() > 0)
result.append(' ');
result.append(current.getData());
ins.jump();
} else if (current.getType() == StyleTokenType.COMMA) {
result.append(current.getData());
ins.jump();
} else if (current.getType() == StyleTokenType.COLON) {
result.append(current.getData());
ins.jump();
if (ins.peek(0).getType() == StyleTokenType.STRING) {
result.append(ins.peek(0).getData());
ins.jump();
} else
throw new StyleParsingException("bad definition");
} else
throw new StyleParsingException("bad definition");
}
return result.toString();
}
private static void skipNewLines(Inspector ins) {
while (true) {
final StyleToken token = ins.peek(0);
if (token == null || token.getType() != StyleTokenType.NEWLINE)
return;
ins.jump();
}
}
private static void skipColon(Inspector ins) {
while (true) {
final StyleToken token = ins.peek(0);
if (token == null || token.getType() != StyleTokenType.COLON)
return;
ins.jump();
}
}
private static List parse(CharInspector ins) throws StyleParsingException {
final List result = new ArrayList<>();
while (true) {
final char current = ins.peek(0);
if (current == '\0')
break;
// System.err.println("current=" + current);
if (current == ' ' || current == '\t') {
ins.jump();
// Skipping
} else if (current == '/' && ins.peek(1) == '/') {
jumpUntil(ins, '\n');
} else if (current == '/' && ins.peek(1) == '\'') {
jumpUntil(ins, '\'', '/');
} else if (current == '/' && ins.peek(1) == '*') {
jumpUntil(ins, '*', '/');
} else if (current == ',') {
result.add(new StyleToken(StyleTokenType.COMMA, ","));
ins.jump();
} else if (current == ';') {
result.add(new StyleToken(StyleTokenType.SEMICOLON, ";"));
ins.jump();
} else if (current == '\n' || current == '\r') {
result.add(new StyleToken(StyleTokenType.NEWLINE, "NEWLINE"));
ins.jump();
} else if (current == '*') {
result.add(new StyleToken(StyleTokenType.STAR, "*"));
ins.jump();
} else if (current == ':') {
result.add(new StyleToken(StyleTokenType.COLON, ":"));
ins.jump();
} else if (current == '{') {
result.add(new StyleToken(StyleTokenType.OPEN_BRACKET, "{"));
ins.jump();
} else if (current == '}') {
result.add(new StyleToken(StyleTokenType.CLOSE_BRACKET, "}"));
ins.jump();
} else if (current == '@') {
result.add(new StyleToken(StyleTokenType.AROBASE_MEDIA, readArobaseMedia(ins)));
} else if (current == '\"') {
final String s = readQuotedString(ins);
result.add(new StyleToken(StyleTokenType.STRING, s));
} else {
final String s = readString(ins);
result.add(new StyleToken(StyleTokenType.STRING, s));
}
}
return result;
}
private static void jumpUntil(CharInspector ins, char ch1) {
while (ins.peek(0) != 0) {
if (ins.peek(0) == ch1) {
ins.jump();
return;
}
ins.jump();
}
}
private static void jumpUntil(CharInspector ins, char ch1, char ch2) {
while (ins.peek(0) != 0) {
if (ins.peek(0) == ch1 && ins.peek(1) == ch2) {
ins.jump();
ins.jump();
return;
}
ins.jump();
}
}
private static String readArobaseMedia(CharInspector ins) {
final char current0 = ins.peek(0);
if (current0 != '@')
throw new IllegalStateException();
ins.jump();
final StringBuilder result = new StringBuilder();
while (ins.peek(0) != 0) {
char ch = ins.peek(0);
ins.jump();
if (ch == '{' || ch == '}' || ch == ';')
break;
result.append(ch);
}
return result.toString();
}
private static String readQuotedString(CharInspector ins) {
final StringBuilder result = new StringBuilder();
if (ins.peek(0) != '\"')
throw new IllegalStateException();
ins.jump();
while (ins.peek(0) != 0 && ins.peek(0) != '\"') {
char ch = ins.peek(0);
ins.jump();
result.append(ch);
}
if (ins.peek(0) == '\"')
ins.jump();
return result.toString();
}
private static String readString(CharInspector ins) {
final StringBuilder result = new StringBuilder();
while (ins.peek(0) != 0) {
char ch = ins.peek(0);
if (ch == '\n' || ch == '\r')
break;
if (ch == ' ' && result.charAt(0) != '.')
break;
if (ch == '{' || ch == '}' || ch == ';' || ch == ',' || ch == ':' || ch == '\t')
break;
ins.jump();
// System.err.println("ch=" + ch);
result.append(ch);
}
if (result.charAt(0) == '.')
return result.toString().trim();
return result.toString();
}
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