import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
private Compiler createCompiler(CompilerOptions options) {
  Compiler compiler = new Compiler();
  MessageFormatter formatter =
      options.errorFormat.toFormatter(compiler, false);
  AntErrorManager errorManager = new AntErrorManager(formatter, this);
  compiler.setErrorManager(errorManager);
  return compiler;
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
@Override
public void generateReport() {
  MessageFormatter formatter = new LightweightMessageFormatter(
      Preconditions.checkNotNull(sourceExcerptProvider));
  for (JSError error : errors) {
    log.error(error.format(CheckLevel.ERROR, formatter));
  }
  for (JSError warning : warnings) {
    log.warn(warning.format(CheckLevel.WARNING, formatter));
  }
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
public static String build(Task task, List<File> inputs) {
  List<SourceFile> externs;
  try {
    externs = CommandLineRunner.getDefaultExterns();
  } catch (IOException e) {
    throw new BuildException(e);
  }

  List<SourceFile> jsInputs = new ArrayList<SourceFile>();
  for (File f : inputs) {
    jsInputs.add(SourceFile.fromFile(f));
  }

  CompilerOptions options = new CompilerOptions();
  CompilationLevel.ADVANCED_OPTIMIZATIONS
      .setOptionsForCompilationLevel(options);
  WarningLevel.VERBOSE.setOptionsForWarningLevel(options);
  for (DiagnosticGroup dg : diagnosticGroups) {
    options.setWarningLevel(dg, CheckLevel.ERROR);
  }

  options.setCodingConvention(new GoogleCodingConvention());

  Compiler compiler = new Compiler();
  MessageFormatter formatter =
      options.errorFormat.toFormatter(compiler, false);
  AntErrorManager errorManager = new AntErrorManager(formatter, task);
  compiler.setErrorManager(errorManager);

  Result r = compiler.compile(externs, jsInputs, options);
  if (!r.success) {
    return null;
  }

  String wrapped = "(function(){" + compiler.toSource() + "})();\n";
  return wrapped;
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
private Compiler createCompiler(CompilerOptions options) {
  Compiler compiler = new Compiler();
  MessageFormatter formatter =
      options.getErrorFormat().toFormatter(compiler, false);
  AntErrorManager errorManager = new AntErrorManager(formatter, this);
  compiler.setErrorManager(errorManager);
  return compiler;
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
private static String format(SourceExcerptProvider source, JSError[] errors, JSError[] warnings) {
  StringBuilder sb = new StringBuilder().append("Transpilation failed:\n");
  MessageFormatter formatter =
      source != null
          ? ErrorFormat.SINGLELINE.toFormatter(source, false)
          : ErrorFormat.SOURCELESS.toFormatter(source, false);
  for (JSError error : errors) {
    sb.append("\n").append(formatter.formatError(error));
  }
  for (JSError warning : warnings) {
    sb.append("\n").append(formatter.formatError(warning));
  }
  return sb.toString();
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
@Override
public Source transform(Source input) {
  CompileResult result = compilerSupplier.compile(input.path(), input.code());
  if (result.errors.length > 0) {
    // TODO(sdh): how to handle this?  Currently we throw an ISE with the message,
    // but this may not be the most appropriate option.  It might make sense to
    // add console.log() statements to any JS that comes out, particularly for
    // warnings.
    MessageFormatter formatter = ErrorFormat.SOURCELESS.toFormatter(null, false);
    StringBuilder message =
        new StringBuilder().append(getTranformationName()).append(" failed.\n");
    for (JSError error : result.errors) {
      message.append(formatter.formatError(error));
    }
    throw new IllegalStateException(message.toString());
  }
  if (!result.transformed) {
    return input;
  }
  Source.Builder builder = input.toBuilder()
      .setCode(result.source)
      .setSourceMap(result.sourceMap);
  if (getRuntime().isPresent()) {
      builder.addRuntime(compilerSupplier.runtime(getRuntime().get()));
  }
  return builder.build();
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
public AntErrorManager(MessageFormatter formatter, Task task) {
  this.formatter = formatter;
  this.task = task;
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
GentsErrorManager(PrintStream stream, MessageFormatter formatter, boolean debug) {
  super(formatter, stream);
  this.debug = debug;
}
 

import com.google.javascript.jscomp.MessageFormatter; //导入依赖的package包/类
ClutzErrorManager(PrintStream stream, MessageFormatter formatter, boolean debug) {
  super(formatter, stream);
  this.debug = debug;
}