Examples of org.stringtemplate.v4.AutoIndentWriter

org.stringtemplate.v4.compiler.FormalArgument
Essentially a char filter that knows how to auto-indent output by maintaining a stack of indent levels. The indent stack is a stack of strings so we can repeat original indent not just the same number of columns (don't have to worry about tabs vs spaces then). Anchors are char positions (tabs won't work) that indicate where all future wraps should justify to. The wrap position is actually the larger of either the last anchor or the indentation level. This is a filter on a Writer. \n is the proper way to say newline for options and templates. Templates can mix \r\n and \n them but use \n for sure in options like wrap="\n". ST will generate the right thing. Override the default (locale) newline by passing in a string to the constructor.

   *  Otherwise we just use the default "antlr".
   */
  public static void setFormat(String formatName) {
    ErrorManager.formatName = formatName;
    String fileName = "org/antlr/tool/templates/messages/formats/"+formatName+".stg";
    format = new STGroupFile(fileName);
    format.setListener(initSTListener);
    if ( !format.isDefined("message") ) { // pick random msg to load
      if ( formatName.equals("antlr") ) {
        rawError("no such message format file "+fileName+" retrying with default ANTLR format");
        setFormat("antlr"); // recurse on this rule, trying the default message format

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            rawError("no such message format file "+fileName+" retrying with default ANTLR format");
            setFormat("antlr"); // recurse on this rule, trying the default message format
            return;
        }


        format = new STGroupFile(fileName, "UTF-8");
        format.load();


        if ( !initSTListener.errors.isEmpty() ) {
            rawError("ANTLR installation corrupted; can't load messages format file:\n"+
                     initSTListener.toString());

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    loadPrecRuleTemplates();
  }


  public void loadPrecRuleTemplates() {
    String templateGroupFile = "org/antlr/v4/tool/templates/LeftRecursiveRules.stg";
    recRuleTemplates = new STGroupFile(templateGroupFile);
    if ( !recRuleTemplates.isDefined("recRule") ) {
      tool.errMgr.toolError(ErrorType.MISSING_CODE_GEN_TEMPLATES, "LeftRecursiveRules");
    }


    // use codegen to get correct language templates; that's it though

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    setFileName(fileName);
    // ensure we have the composite set to something
    if ( composite.delegateGrammarTreeRoot==null ) {
      composite.setDelegationRoot(this);
    }
    STGroup lexerGrammarSTG = new STGroupString(lexerGrammarTemplate);
    lexerGrammarST = lexerGrammarSTG.getInstanceOf("grammar");
    target = CodeGenerator.loadLanguageTarget((String) getOption("language"));
  }

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  public Grammar(Tool tool) {
    setTool(tool);
    builtFromString = true;
    composite = new CompositeGrammar(this);
    STGroup lexerGrammarSTG = new STGroupString(lexerGrammarTemplate);
    lexerGrammarST = lexerGrammarSTG.getInstanceOf("grammar");
    target = CodeGenerator.loadLanguageTarget((String)getOption("language"));
  }

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                List<FormalArgument> args,
                String template,
                Token templateToken) // for error location
    {
    //System.out.println("STGroup.compile: "+enclosingTemplateName);
    Compiler c = new Compiler(this);
    return c.compile(srcName, name, args, template, templateToken);
  }

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    if ( STGroup.trackCreationEvents ) {
      if ( debugState==null ) debugState = new ST.DebugState();
      debugState.addAttrEvents.map(name, new AddAttributeEvent(name, value));
    }


    FormalArgument arg = null;
    if ( impl.hasFormalArgs ) {
      if ( impl.formalArguments!=null ) arg = impl.formalArguments.get(name);
      if ( arg==null ) {
        throw new IllegalArgumentException("no such attribute: "+name);
      }
    }
    else {
      // define and make room in locals (a hack to make new ST("simple template") work.)
      if ( impl.formalArguments!=null ) {
        arg = impl.formalArguments.get(name);
      }
      if ( arg==null ) { // not defined
        arg = new FormalArgument(name);
        impl.addArg(arg);
        if ( locals==null ) locals = new Object[1];
        //else locals = Arrays.copyOf(locals, impl.formalArguments.size());
        else {
          Object[] copy = new Object[impl.formalArguments.size()];

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      if ( impl.hasFormalArgs ) {
        throw new IllegalArgumentException("no such attribute: "+name);
      }
      return;
    }
    FormalArgument arg = impl.formalArguments.get(name);
    if ( arg==null ) {
      throw new IllegalArgumentException("no such attribute: "+name);
    }
    locals[arg.index] = EMPTY_ATTR; // reset value
  }

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   */
    protected void rawSetAttribute(String name, Object value) {
    if ( impl.formalArguments==null ) {
      throw new IllegalArgumentException("no such attribute: "+name);
    }
    FormalArgument arg = impl.formalArguments.get(name);
    if ( arg==null ) {
      throw new IllegalArgumentException("no such attribute: "+name);
    }
    locals[arg.index] = value;
  }

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    locals[arg.index] = value;
  }


  /** Find an attr in this template only. */
  public Object getAttribute(String name) {
    FormalArgument localArg = null;
    if ( impl.formalArguments!=null ) localArg = impl.formalArguments.get(name);
    if ( localArg!=null ) {
      Object o = locals[localArg.index];
      if ( o==ST.EMPTY_ATTR ) o = null;
      return o;

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