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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 2007 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.jscomp.base.format.SimpleFormat;
import java.io.PrintStream;

/**
 * An error manager that prints errors and warnings to the print stream provided in addition to the
 * functionality of the {@link BasicErrorManager}.
 *
 * 

It collaborates with a {@link SourceExcerptProvider} via a {@link MessageFormatter} to display * error messages with source context. * * @deprecated, Please use the {#SortingErrorManger} with a {#PrintStreamErrorReportGenerator} * instead. */ @Deprecated public class PrintStreamErrorManager extends BasicErrorManager { private final MessageFormatter formatter; private final PrintStream stream; private int summaryDetailLevel = 1; /** * Creates an error manager. * @param formatter the message formatter used to format the messages * @param stream the stream on which the errors and warnings should be * printed. This class does not close the stream */ public PrintStreamErrorManager(MessageFormatter formatter, PrintStream stream) { this.formatter = formatter; this.stream = stream; } /** * Creates an instance with a source-less error formatter. */ public PrintStreamErrorManager(PrintStream stream) { this(ErrorFormat.SOURCELESS.toFormatter(null, false), stream); } @Override public void println(CheckLevel level, JSError error) { stream.println(error.format(level, formatter)); } public void setSummaryDetailLevel(int summaryDetailLevel) { this.summaryDetailLevel = summaryDetailLevel; } @Override public void printSummary() { if (summaryDetailLevel >= 3 || (summaryDetailLevel >= 1 && getErrorCount() + getWarningCount() > 0) || (summaryDetailLevel >= 2 && getTypedPercent() > 0.0)) { if (getTypedPercent() > 0.0) { stream.print(SimpleFormat.format("%d error(s), %d warning(s), %.1f%% typed%n", getErrorCount(), getWarningCount(), getTypedPercent())); } else { stream.print(SimpleFormat.format("%d error(s), %d warning(s)%n", getErrorCount(), getWarningCount())); } } } }





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