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Closure Compiler is a JavaScript optimizing compiler. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs.

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/*
 * Copyright 2016 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;

/**
 * A warnings guard that suppresses warnings for a particular diagnostic group for a file that
 * contains the specified substring.
 * @author [email protected] (Nick Santos)
 */
public class DiagnosticGroupPathSuppressingWarningsGuard extends DiagnosticGroupWarningsGuard {
  private final String part;

  public DiagnosticGroupPathSuppressingWarningsGuard(DiagnosticGroup type, String part) {
    super(type, CheckLevel.OFF);
    this.part = part;
  }

  /** Does not suppress all warnings of any type. */
  @Override public boolean disables(DiagnosticGroup type) {
    return false;
  }

  /** Does not touch warnings in other paths. */
  @Override public CheckLevel level(JSError error) {
    return error.sourceName != null && error.sourceName.contains(part)
        ? super.level(error) /** suppress */
        : null /** proceed */;
  }

  @Override public String toString() {
    return super.toString() + "(" + part + ")";
  }
}