public void rawDefineTemplate(String name, CompiledST code, Token defT) {
   CompiledST prev = rawGetTemplate(name);
   if (prev != null) {
     if (!prev.isRegion) {
       errMgr.compileTimeError(ErrorType.TEMPLATE_REDEFINITION, null, defT);
       return;
     }
     if (prev.isRegion) {
       if (code.regionDefType != ST.RegionType.IMPLICIT
           && prev.regionDefType == ST.RegionType.EMBEDDED) {
         errMgr.compileTimeError(
             ErrorType.EMBEDDED_REGION_REDEFINITION, null, defT, getUnMangledTemplateName(name));
         return;
       } else if (code.regionDefType == ST.RegionType.IMPLICIT
           || prev.regionDefType == ST.RegionType.EXPLICIT) {
         errMgr.compileTimeError(
             ErrorType.REGION_REDEFINITION, null, defT, getUnMangledTemplateName(name));
         return;
       }
     }
   }
   code.nativeGroup = this;
   code.templateDefStartToken = defT;
   templates.put(name, code);
 }
 /** Make name and alias for target. Replace any previous def of name */
 public CompiledST defineTemplateAlias(Token aliasT, Token targetT) {
   String alias = aliasT.getText();
   String target = targetT.getText();
   CompiledST targetCode = rawGetTemplate(target);
   if (targetCode == null) {
     errMgr.compileTimeError(ErrorType.ALIAS_TARGET_UNDEFINED, null, aliasT, alias, target);
     return null;
   }
   templates.put(alias, targetCode);
   return targetCode;
 }
 protected ST getEmbeddedInstanceOf(
     Interpreter interp, ST enclosingInstance, int ip, String name) {
   if (verbose) System.out.println("getEmbeddedInstanceOf(" + name + ")");
   ST st = getInstanceOf(name);
   if (st == null) {
     errMgr.runTimeError(interp, enclosingInstance, ip, ErrorType.NO_SUCH_TEMPLATE, name);
     return createStringTemplateInternally(new CompiledST());
   }
   // this is only called internally. wack any debug ST create events
   if (trackCreationEvents) {
     st.debugState.newSTEvent = null; // toss it out
   }
   return st;
 }
 /** Load template stream into this group */
 public CompiledST loadTemplateFile(String prefix, String fileName, CharStream templateStream) {
   GroupLexer lexer = new GroupLexer(templateStream);
   CommonTokenStream tokens = new CommonTokenStream(lexer);
   GroupParser parser = new GroupParser(tokens);
   parser.group = this;
   lexer.group = this;
   try {
     parser.templateDef(prefix);
   } catch (RecognitionException re) {
     errMgr.groupSyntaxError(ErrorType.SYNTAX_ERROR, fileName, re, re.getMessage());
   }
   String templateName = Misc.getFileNameNoSuffix(fileName);
   if (prefix != null && prefix.length() > 0) templateName = prefix + "/" + templateName;
   return rawGetTemplate(templateName);
 }
 /** Load a group file with full path fileName; it's relative to root by prefix. */
 public void loadGroupFile(String prefix, String fileName) {
   // System.out.println("load group file prefix="+prefix+", fileName="+fileName);
   GroupParser parser = null;
   try {
     URL f = new URL(fileName);
     ANTLRInputStream fs = new ANTLRInputStream(f.openStream(), encoding);
     GroupLexer lexer = new GroupLexer(fs);
     fs.name = fileName;
     CommonTokenStream tokens = new CommonTokenStream(lexer);
     parser = new GroupParser(tokens);
     parser.group(this, prefix);
   } catch (Exception e) {
     errMgr.IOError(null, ErrorType.CANT_LOAD_GROUP_FILE, e, fileName);
   }
 }
  public CompiledST defineRegion(
      String enclosingTemplateName, Token regionT, String template, Token templateToken) {
    String name = regionT.getText();
    template = Misc.trimOneStartingNewline(template);
    template = Misc.trimOneTrailingNewline(template);
    CompiledST code = compile(getFileName(), enclosingTemplateName, null, template, templateToken);
    String mangled = getMangledRegionName(enclosingTemplateName, name);

    if (lookupTemplate(mangled) == null) {
      errMgr.compileTimeError(
          ErrorType.NO_SUCH_REGION, templateToken, regionT, enclosingTemplateName, name);
      return new CompiledST();
    }
    code.name = mangled;
    code.isRegion = true;
    code.regionDefType = ST.RegionType.EXPLICIT;
    code.templateDefStartToken = regionT;

    rawDefineTemplate(mangled, code, regionT);
    code.defineArgDefaultValueTemplates(this);
    code.defineImplicitlyDefinedTemplates(this);

    return code;
  }
  /**
   * Import template files, directories, and group files. Priority is given to templates defined in
   * the current group; this, in effect, provides inheritance. Polymorphism is in effect so that if
   * an inherited template references template t() then we search for t() in the subgroup first.
   *
   * <p>If you specify an absolute file name or directory name, the import statement uses that
   * directly. If it is not an absolute path, we look that entity up in the directory holding the
   * group that initiates the import. If file or directory is not in that directory, then we load
   * using the classpath.
   *
   * <p>Templates are loaded on-demand from import dirs. Imported groups are loaded on-demand when
   * searching for a template.
   *
   * <p>The listener of this group is passed to the import group so errors found while loading
   * imported element are sent to listener of this group.
   */
  public void importTemplates(Token fileNameToken) {
    String fileName = fileNameToken.getText();
    // do nothing upon syntax error
    if (fileName == null || fileName.equals("<missing STRING>")) return;
    fileName = Misc.strip(fileName, 1);

    // System.out.println("import "+fileName);
    boolean isGroupFile = fileName.endsWith(".stg");
    boolean isTemplateFile = fileName.endsWith(".st");
    boolean isGroupDir = !(isGroupFile || isTemplateFile);

    STGroup g = null;

    File f = new File(fileName);
    if (f.isAbsolute()) { // load directly if absolute
      if (isTemplateFile) {
        g = new STGroup();
        g.setListener(this.getListener());
        g.loadAbsoluteTemplateFile(fileName);
      } else if (isGroupFile) {
        g = new STGroupFile(fileName, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      } else if (isGroupDir) {
        g = new STGroupDir(fileName, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      }
      importTemplates(g);
      return;
    }

    // it's a relative name; search path is working dir, g.stg's dir, CLASSPATH
    URL thisRoot = getRootDirURL();
    URL fileUnderRoot = null;
    //		System.out.println("thisRoot="+thisRoot);
    try {
      fileUnderRoot = new URL(thisRoot + "/" + fileName);
    } catch (MalformedURLException mfe) {
      errMgr.internalError(null, "can't build URL for " + thisRoot + "/" + fileName, mfe);
      return;
    }
    if (isTemplateFile) {
      g = new STGroup();
      g.setListener(this.getListener());
      URL fileURL;
      if (Misc.urlExists(fileUnderRoot)) fileURL = fileUnderRoot;
      else fileURL = getURL(fileName); // try CLASSPATH
      if (fileURL != null) {
        try {
          InputStream s = fileURL.openStream();
          ANTLRInputStream templateStream = new ANTLRInputStream(s);
          templateStream.name = fileName;
          CompiledST code = g.loadTemplateFile("", fileName, templateStream);
          if (code == null) g = null;
        } catch (IOException ioe) {
          errMgr.internalError(null, "can't read from " + fileURL, ioe);
          g = null;
        }
      } else {
        g = null;
      }
    } else if (isGroupFile) {
      // System.out.println("look for fileUnderRoot: "+fileUnderRoot);
      if (Misc.urlExists(fileUnderRoot)) {
        g = new STGroupFile(fileUnderRoot, encoding, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      } else {
        g = new STGroupFile(fileName, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      }
    } else if (isGroupDir) {
      //			System.out.println("try dir "+fileUnderRoot);
      if (Misc.urlExists(fileUnderRoot)) {
        g = new STGroupDir(fileUnderRoot, encoding, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      } else {
        // try in CLASSPATH
        //				System.out.println("try dir in CLASSPATH "+fileName);
        g = new STGroupDir(fileName, delimiterStartChar, delimiterStopChar);
        g.setListener(this.getListener());
      }
    }

    if (g == null) {
      errMgr.compileTimeError(ErrorType.CANT_IMPORT, null, fileNameToken, fileName);
    } else {
      importTemplates(g);
    }
  }