| /* |
| * Copyright 2011 Google Inc. |
| * |
| * 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.gwt.codegen.server; |
| |
| import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
| |
| /** |
| * Helper class to produce string expressions consisting of literals and |
| * computed values. |
| */ |
| class SafeHtmlStringGenerator extends StringGenerator { |
| |
| /** |
| * Fully-qualified class name of the SafeHtmlBuilder class. |
| */ |
| private static final String SAFE_HTML_BUILDER_FQCN = SafeHtmlBuilder.class.getCanonicalName(); |
| |
| /** |
| * Initialize the StringGenerator with an output buffer. |
| * |
| * @param buf output buffer |
| */ |
| SafeHtmlStringGenerator(StringBuilder buf) { |
| super(buf); |
| buf.append("new " + SAFE_HTML_BUILDER_FQCN + "()"); |
| } |
| |
| @Override |
| protected void afterExpression(Type type) { |
| buf.append(')'); |
| } |
| |
| @Override |
| protected void beforeExpression(Type type) { |
| switch (type) { |
| case LITERAL: |
| buf.append(".appendHtmlConstant("); |
| break; |
| case PRIMITIVE: |
| case SAFE: |
| buf.append(".append("); |
| break; |
| case OTHER: |
| buf.append(".appendEscaped("); |
| break; |
| } |
| } |
| |
| @Override |
| protected void finishOutput() { |
| buf.append(".toSafeHtml()"); |
| } |
| |
| @Override |
| protected void forceStringPrefix() { |
| buf.append("String.valueOf("); |
| } |
| |
| @Override |
| protected void forceStringSuffix() { |
| buf.append(")"); |
| } |
| } |