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/**
* Copyright (c) 2008, SnakeYAML
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
package org.yaml.snakeyaml.error;
import java.io.Serializable;
import org.yaml.snakeyaml.scanner.Constant;
/**
* It's just a record and its only use is producing nice error messages. Parser does not use it for
* any other purposes.
*/
public final class Mark implements Serializable {
private final String name;
private final int index;
private final int line;
private final int column;
private final int[] buffer;
private final int pointer;
private static int[] toCodePoints(char[] str) {
int[] codePoints = new int[Character.codePointCount(str, 0, str.length)];
for (int i = 0, c = 0; i < str.length; c++) {
int cp = Character.codePointAt(str, i);
codePoints[c] = cp;
i += Character.charCount(cp);
}
return codePoints;
}
public Mark(String name, int index, int line, int column, char[] str, int pointer) {
this(name, index, line, column, toCodePoints(str), pointer);
}
/*
* Existed in older versions but replaced with {@code char[]}-based constructor. Restored in v1.22
* for backwards compatibility.
*
* @deprecated Since restored in v1.22. Use {@link Mark#Mark(String, int, int, int, char[], int)}.
*/
@Deprecated
public Mark(String name, int index, int line, int column, String buffer, int pointer) {
this(name, index, line, column, buffer.toCharArray(), pointer);
}
public Mark(String name, int index, int line, int column, int[] buffer, int pointer) {
super();
this.name = name;
this.index = index;
this.line = line;
this.column = column;
this.buffer = buffer;
this.pointer = pointer;
}
private boolean isLineBreak(int c) {
return Constant.NULL_OR_LINEBR.has(c);
}
public String get_snippet(int indent, int max_length) {
float half = max_length / 2f - 1f;
int start = pointer;
String head = "";
while ((start > 0) && !isLineBreak(buffer[start - 1])) {
start -= 1;
if (pointer - start > half) {
head = " ... ";
start += 5;
break;
}
}
String tail = "";
int end = pointer;
while ((end < buffer.length) && !isLineBreak(buffer[end])) {
end += 1;
if (end - pointer > half) {
tail = " ... ";
end -= 5;
break;
}
}
StringBuilder result = new StringBuilder();
for (int i = 0; i < indent; i++) {
result.append(" ");
}
result.append(head);
for (int i = start; i < end; i++) {
result.appendCodePoint(buffer[i]);
}
result.append(tail);
result.append("\n");
for (int i = 0; i < indent + pointer - start + head.length(); i++) {
result.append(" ");
}
result.append("^");
return result.toString();
}
public String get_snippet() {
return get_snippet(4, 75);
}
@Override
public String toString() {
String snippet = get_snippet();
String builder =
" in " + name + ", line " + (line + 1) + ", column " + (column + 1) + ":\n" + snippet;
return builder;
}
public String getName() {
return name;
}
/**
* starts with 0
*
* @return line number
*/
public int getLine() {
return line;
}
/**
* starts with 0
*
* @return column number
*/
public int getColumn() {
return column;
}
/**
* starts with 0
*
* @return character number
*/
public int getIndex() {
return index;
}
public int[] getBuffer() {
return buffer;
}
public int getPointer() {
return pointer;
}
}
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