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/*
* Copyright 2004 The Closure Compiler Authors.
*
* 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 com.google.javascript.jscomp;
import com.google.javascript.rhino.Node;
import java.io.Serializable;
import javax.annotation.Nullable;
/**
* Compile error description
*
*/
public final class JSError implements Serializable {
/** A type of the error */
private final DiagnosticType type;
/** Description of the error */
public final String description;
/** Name of the source */
public final String sourceName;
/** Node where the warning occurred. */
public final Node node;
/** Line number of the source */
public final int lineNumber;
private final CheckLevel defaultLevel;
// character number
private final int charno;
//
// JSError.make - static factory methods for creating JSError objects
//
// The general form of the arguments is
//
// [source location] [level] DiagnosticType [argument ...]
//
// This order echos a typical command line diagnostic. Source location
// arguments are arranged to be sources of information in the order
// file-line-column.
//
// If the level is not given, it is taken from the level of the
// DiagnosticType.
/**
* Creates a JSError with no source information
*
* @param type The DiagnosticType
* @param arguments Arguments to be incorporated into the message
*/
public static JSError make(DiagnosticType type, String... arguments) {
return new JSError(null, null, -1, -1, type, null, arguments);
}
/**
* Creates a JSError with no source information and a non-default level.
*
* @param level
* @param type The DiagnosticType
* @param arguments Arguments to be incorporated into the message
*/
public static JSError make(CheckLevel level, DiagnosticType type, String... arguments) {
return new JSError(null, null, -1, -1, type, level, arguments);
}
/**
* Creates a JSError at a given source location
*
* @param sourceName The source file name
* @param lineno Line number with source file, or -1 if unknown
* @param charno Column number within line, or -1 for whole line.
* @param type The DiagnosticType
* @param arguments Arguments to be incorporated into the message
*/
public static JSError make(String sourceName, int lineno, int charno,
DiagnosticType type, String... arguments) {
return new JSError(sourceName, null, lineno, charno, type, null, arguments);
}
/**
* Creates a JSError at a given source location
*
* @param sourceName The source file name
* @param lineno Line number with source file, or -1 if unknown
* @param charno Column number within line, or -1 for whole line.
* @param type The DiagnosticType
* @param arguments Arguments to be incorporated into the message
*/
public static JSError make(String sourceName, int lineno, int charno,
CheckLevel level, DiagnosticType type, String... arguments) {
return new JSError(
sourceName, null, lineno, charno, type, level, arguments);
}
/**
* Creates a JSError from a file and Node position.
*
* @param n Determines the line and char position and source file name
* @param type The DiagnosticType
* @param arguments Arguments to be incorporated into the message
*/
public static JSError make(Node n, DiagnosticType type, String... arguments) {
return new JSError(n.getSourceFileName(), n, type, arguments);
}
public static JSError make(Node n, CheckLevel level, DiagnosticType type, String... arguments) {
return new JSError(
n.getSourceFileName(), n, n.getLineno(), n.getCharno(), type, level, arguments);
}
//
// JSError constructors
//
/**
* Creates a JSError at a CheckLevel for a source file location.
* Private to avoid any entanglement with code outside of the compiler.
*/
private JSError(
String sourceName, @Nullable Node node, int lineno, int charno,
DiagnosticType type, CheckLevel level, String... arguments) {
this.type = type;
this.node = node;
this.description = type.format.format(arguments);
this.lineNumber = lineno;
this.charno = charno;
this.sourceName = sourceName;
this.defaultLevel = level == null ? type.level : level;
}
/**
* Creates a JSError for a source file location. Private to avoid
* any entanglement with code outside of the compiler.
*/
private JSError(String sourceName, @Nullable Node node,
DiagnosticType type, String... arguments) {
this(sourceName,
node,
(node != null) ? node.getLineno() : -1,
(node != null) ? node.getCharno() : -1,
type, null, arguments);
}
public DiagnosticType getType() {
return type;
}
/**
* Format a message at the given level.
*
* @return the formatted message or {@code null}
*/
public String format(CheckLevel level, MessageFormatter formatter) {
switch (level) {
case ERROR:
return formatter.formatError(this);
case WARNING:
return formatter.formatWarning(this);
default:
return null;
}
}
@Override
public String toString() {
// TODO(user): remove custom toString.
return type.key + ". " + description + " at " +
(sourceName != null && sourceName.length() > 0 ?
sourceName : "(unknown source)") + " line " +
(lineNumber != -1 ? String.valueOf(lineNumber) : "(unknown line)") +
" : " + (charno != -1 ? String.valueOf(charno) : "(unknown column)");
}
/**
* Get the character number.
*/
public int getCharno() {
return charno;
}
/**
* Get the line number. One-based.
*/
public int getLineNumber() {
return lineNumber;
}
/**
* @return the offset of the region the Error applies to, or -1 if the offset
* is unknown.
*/
public int getNodeSourceOffset() {
return node != null ? node.getSourceOffset() : -1;
}
/**
* @return the length of the region the Error applies to, or 0 if the length
* is unknown.
*/
public int getNodeLength() {
return node != null ? node.getLength() : 0;
}
/** The default level, before any of the WarningsGuards are applied. */
public CheckLevel getDefaultLevel() {
return defaultLevel;
}
@Override
public boolean equals(Object o) {
// Generated by Intellij IDEA
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
JSError jsError = (JSError) o;
if (charno != jsError.charno) {
return false;
}
if (lineNumber != jsError.lineNumber) {
return false;
}
if (!description.equals(jsError.description)) {
return false;
}
if (defaultLevel != jsError.defaultLevel) {
return false;
}
if (sourceName != null ? !sourceName.equals(jsError.sourceName)
: jsError.sourceName != null) {
return false;
}
return type.equals(jsError.type);
}
@Override
public int hashCode() {
// Generated by Intellij IDEA
int result = type.hashCode();
result = 31 * result + description.hashCode();
result = 31 * result + (sourceName != null ? sourceName.hashCode() : 0);
result = 31 * result + lineNumber;
result = 31 * result + defaultLevel.hashCode();
result = 31 * result + charno;
return result;
}
}
