com.google.gwt.safehtml.rebind.HtmlTemplateParser Maven / Gradle / Ivy
/*
* Copyright 2009 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.safehtml.rebind;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.safehtml.rebind.ParsedHtmlTemplate.HtmlContext;
import com.google.gwt.safehtml.rebind.ParsedHtmlTemplate.ParameterChunk;
import com.google.gwt.thirdparty.guava.common.base.Preconditions;
import com.google.gwt.thirdparty.streamhtmlparser.HtmlParser;
import com.google.gwt.thirdparty.streamhtmlparser.HtmlParserFactory;
import com.google.gwt.thirdparty.streamhtmlparser.ParseException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* A HTML context-aware parser for a simple HTML template language.
*
*
* This parser parses templates consisting of HTML markup, with template
* variables of the form {@code {n}}. For example, a template might look like,
*
*
{@code
* {3}
* }
*
*
* The parser is lenient, and will accept HTML that is not well-formed; the
* accepted set of HTML is similar to what is typically accepted by browsers.
* However, the following constraints on the HTML template are enforced:
*
*
* - Template variables may not appear in a JavaScript context (inside a
* {@code