com.google.javascript.jscomp.WarningsGuard Maven / Gradle / Ivy
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/*
* Copyright 2008 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 java.io.Serializable;
/**
* Class that allows to flexibly manage what to do with a reported warning/error.
*
* Guard has several choices: - return OFF - suppress the warning/error - return WARNING - return
* ERROR report it with high severity - return null. Does not know what to do with it. Lets the
* other guard decide what to do with it.
*
*
Although the interface is very simple, it allows you easily customize what warnings you are
* interested in.
*
*
For example there are could be several implementations: StrictGuard - {return ERROR}. All
* warnings should be treat as errors. SilentGuard - {if (WARNING) return OFF}. Suppress all
* warnings but still fail if JS has errors. AllowlistGuard (if !allowlistErrors.contains(error)
* return ERROR) return error if it does not present in the allowlist.
*/
public abstract class WarningsGuard implements Serializable {
/** Priority */
public static enum Priority {
MAX(1),
MIN(100),
STRICT(100),
DEFAULT(50),
SUPPRESS_BY_ALLOWLIST(40),
SUPPRESS_DOC(20),
FILTER_BY_PATH(1);
final int value;
Priority(int value) {
this.value = value;
}
public int getValue() {
return value;
}
}
/**
* Returns a new check level for a given error. OFF - suppress it, ERROR -
* report as error. null means that this guard does not know what to do
* with the error. Null is extremely helpful when you have a chain of
* guards. If current guard returns null, then the next in the chain should
* process it.
*
* @param error a reported error.
* @return what level given error should have.
*/
public abstract CheckLevel level(JSError error);
/**
* The priority in which warnings guards are applied. Lower means the
* guard will be applied sooner. Expressed on a scale of 1 to 100.
*/
protected int getPriority() {
return Priority.DEFAULT.value;
}
/**
* Returns whether all warnings in the given diagnostic group will be
* filtered out. Used to determine which passes to skip.
*
* @param group A group of DiagnosticTypes.
* @return Whether all warnings of these types are disabled by this guard.
*/
protected boolean disables(DiagnosticGroup group) {
return false;
}
/**
* Returns whether any of the warnings in the given diagnostic group will be
* upgraded to a warning or error.
*
* @param group A group of DiagnosticTypes.
* @return Whether any warnings of these types are enabled by this guard.
*/
protected boolean enables(DiagnosticGroup group) {
return false;
}
enum DiagnosticGroupState {
ON,
OFF,
UNSPECIFIED
}
}