Examples of com.google.javascript.jscomp.Compiler$IntermediateState

com.google.javascript.jscomp.Compiler
Stores the internal compiler state just before optimization is performed. This can be saved and restored in order to efficiently optimize multiple different output targets without having to perform checking multiple times. NOTE: This does not include all parts of the compiler's internal state. In particular, SourceFiles and CompilerOptions are not recorded. In order to recreate a Compiler instance from scratch, you would need to call {@code init} with the same arguments as in the initial creation beforerestoring intermediate state.

        this.level = Args.notNull(level, "level");
    }


    @Override
    public String compress(final String original) {
        final Compiler compiler = new Compiler();


        // Advanced mode is used here, but additional options could be set, too.
        CompilerOptions options = new CompilerOptions();
        level.setOptionsForCompilationLevel(options);
        overrideOptions(options);


        final SourceFile extern = getExterns();


        // The dummy input name "input.js" is used here so that any warnings or
        // errors will cite line numbers in terms of input.js.
        final SourceFile input = SourceFile.fromCode("input.js", original);


        // compile() returns a Result, but it is not needed here.
        compiler.compile(extern, input, options);


        // The compiler is responsible for generating the compiled code; it is not
        // accessible via the Result.
        return compiler.toSource();
    }

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         if (key.minified)
         {
            CompilationLevel level = CompilationLevel.SIMPLE_OPTIMIZATIONS;
            CompilerOptions options = new CompilerOptions();
            level.setOptionsForCompilationLevel(options);
            com.google.javascript.jscomp.Compiler compiler = new Compiler();
            compiler.setErrorManager(new LoggerErrorManager(java.util.logging.Logger.getLogger(ResourceRequestHandler.class.getName())));
            StringWriter code = new StringWriter();
            IOTools.copy(script, code);
            JSSourceFile[] inputs = new JSSourceFile[]{
               JSSourceFile.fromCode(sourceName, code.toString())
            };
            Result res = compiler.compile(new JSSourceFile[0], inputs, options);
            if (res.success)
            {
               script = new StringReader(compiler.toSource());
            }
            else
            {
               StringBuilder msg = new StringBuilder("Handle me gracefully JS errors\n");
               for (JSError error : res.errors)

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  private String compilationLevel = CompilationLevel.SIMPLE_OPTIMIZATIONS.toString();


  public void compile(List<File> filesToCompile, String destFileName){
    File destFile = prepareDestFile(destFileName);


    Compiler compiler = new Compiler();
    Result results = compiler.compile(getExterns(), getInputs(filesToCompile), getCompilerOptions());


    logger.debug(results.debugLog);
    for(JSError error : results.errors){
      logger.error("Closure Minifier Error:  " + error.sourceName + "  Description:  " +  error.description);
    }
    for(JSError warning : results.warnings){
      logger.info("Closure Minifier Warning:  " + warning.sourceName + "  Description:  " +  warning.description);
    }


    if (results.success) {
      try {
        Files.write(compiler.toSource(), destFile, Charsets.UTF_8);
      } catch (IOException e) {
        throw new ClosureException("Failed to write minified file to " + destFile, e);
      }
    }else{
      throw new ClosureException("Closure Compiler Failed - See error messages on System.err");

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  }


  protected CompileResult doCompileContent(JsContent content, CompilerOptions options,
      List<SourceFile> externs) throws CompilerException {


    Compiler compiler = new Compiler(getErrorManager()); // We shouldn't reuse compilers


    // disable JS Closure Compiler internal thread
    compiler.disableThreads();


    SourceFile source = SourceFile.fromCode(content.getSource(), content.get());
    Result result = compiler.compile(externs, Lists.newArrayList(source), options);


    if (result.errors.length > 0) {
      throw new CompilerException(result.errors);
    }

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    replay(result);
    return result;
  }


  private Compiler mockRealJsCompiler(JSError error, Result res, String toSource) {
    Compiler result = createMock(Compiler.class);
    expect(result.compile(EasyMock.<List<JSSourceFile>>anyObject(),
        EasyMock.<List<JSSourceFile>>anyObject(),
        isA(CompilerOptions.class))).andReturn(res);
    if (error != null) {
      expect(result.hasErrors()).andReturn(true);
      expect(result.getErrors()).andReturn(new JSError[] { error });
    } else {
      expect(result.hasErrors()).andReturn(false);
    }
    expect(result.getResult()).andReturn(res);
    expect(result.toSource()).andReturn(toSource);
    replay(result);
    return result;
  }

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    replay(result);
    return result;
  }


  private Compiler mockRealJsCompiler(JSError error, Result res, String toSource) {
    Compiler result = createMock(Compiler.class);
    expect(result.compile(EasyMock.<List<JSSourceFile>>anyObject(),
        EasyMock.<List<JSSourceFile>>anyObject(),
        isA(CompilerOptions.class))).andReturn(res);
    if (error != null) {
      expect(result.hasErrors()).andReturn(true);
      expect(result.getErrors()).andReturn(new JSError[] { error });
    } else {
      expect(result.hasErrors()).andReturn(false);
    }
    expect(result.getResult()).andReturn(res);
    expect(result.toSource()).andReturn(toSource);
    replay(result);
    return result;
  }

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  }


  protected CompileResult doCompileContent(JsContent content, CompilerOptions options,
      List<SourceFile> externs) throws CompilerException {


    Compiler compiler = new Compiler(getErrorManager()); // We shouldn't reuse compilers


    // disable JS Closure Compiler internal thread
    compiler.disableThreads();


    SourceFile source = SourceFile.fromCode(content.getSource(), content.get());
    Result result = compiler.compile(externs, Lists.newArrayList(source), options);


    if (result.errors.length > 0) {
      throw new CompilerException(result.errors);
    }

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      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;
  }

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  @Override
  public void process(final Resource resource, final Reader reader, final Writer writer)
      throws IOException {
    final String content = IOUtils.toString(reader);
    final CompilerOptions compilerOptions = optionsPool.getObject();
    final Compiler compiler = newCompiler(compilerOptions);
    try {
      final String fileName = resource == null ? "wro4j-processed-file.js" : resource.getUri();
      final SourceFile[] input = new SourceFile[] {
        SourceFile.fromInputStream(fileName, new ByteArrayInputStream(content.getBytes(getEncoding())))
      };
      SourceFile[] externs = getExterns(resource);
      if (externs == null) {
        // fallback to empty array when null is provided.
        externs = new SourceFile[] {};
      }
      Result result = null;
      result = compiler.compile(Arrays.asList(externs), Arrays.asList(input), compilerOptions);
      if (result.success) {
        writer.write(compiler.toSource());
      } else {
        throw new WroRuntimeException("Compilation has errors: " + Arrays.asList(result.errors));
      }
    } catch (final Exception e) {
      onException(e);

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    return encoding;
  }


  private Compiler newCompiler(final CompilerOptions compilerOptions) {
    Compiler.setLoggingLevel(Level.SEVERE);
    final Compiler compiler = new Compiler();
    compilationLevel.setOptionsForCompilationLevel(compilerOptions);
    // make it play nice with GAE
    compiler.disableThreads();
    compiler.initOptions(compilerOptions);
    return compiler;
  }

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