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/**
* Copyright (C) 2024, 2025 Adrien Hopkins
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package sevenUnits.unit;
import java.nio.file.Path;
import java.util.Optional;
/**
* An exception that occurred when loading a file. This wrapper class adds more
* info about the error.
*
* @author Adrien Hopkins
* @since 2024-08-22
* @since v1.0.0
*/
public final class LoadingException extends RuntimeException {
/** The type of file that was being loaded. */
public static enum FileType {
@SuppressWarnings("javadoc") UNIT, @SuppressWarnings("javadoc") DIMENSION
}
private static final long serialVersionUID = -8167971828216907607L;
private final long lineNumber;
private final String line;
private final Optional<Path> file;
private final FileType fileType;
private final RuntimeException problem;
/**
* Create a LoadingException from some information, without a file.
*
* @param lineNumber line number error happened on
* @param line text of invalid line
* @param fileType type of file
* @param problem problem, as an Exception
*/
public LoadingException(long lineNumber, String line, FileType fileType,
RuntimeException problem) {
super(problem);
this.lineNumber = lineNumber;
this.line = line;
this.file = Optional.empty();
this.fileType = fileType;
this.problem = problem;
}
/**
* Create a LoadingException from some information, with a file.
*
* @param lineNumber line number error happened on
* @param line text of invalid line
* @param file file error happened on
* @param fileType type of file
* @param problem problem, as an Exception
*/
public LoadingException(long lineNumber, String line, Path file,
FileType fileType, RuntimeException problem) {
super(problem);
this.lineNumber = lineNumber;
this.line = line;
this.file = Optional.of(file);
this.fileType = fileType;
this.problem = problem;
}
/**
* @return the file this error happened in, if there is one
*/
public Optional<Path> file() {
return this.file;
}
/**
* @return type of file that this error happened in
*/
public FileType fileType() {
return this.fileType;
}
@Override
public String getMessage() {
return this.file
.map(f -> String.format(
"Error parsing line %d of %s file '%s' (\"%s\"): %s",
this.lineNumber, this.fileType.toString().toLowerCase(), f,
this.line, this.problem))
.orElse(String.format(
"Error parsing line %d of %s stream (\"%s\"): %s",
this.lineNumber, this.fileType.toString().toLowerCase(),
this.line, this.problem));
}
/**
* @return text of line that caused this error
*/
public String line() {
return this.line;
}
/**
* @return number of line that caused this error
*/
public long lineNumber() {
return this.lineNumber;
}
/**
* @return the error, as an exception
*/
public RuntimeException problem() {
return this.problem;
}
}
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