/scalate-core/src/main/scala/org/fusesource/scalate/jade/JadeParser.scala

 1/**
 2 * Copyright (C) 2009-2011 the original author or authors.
 3 * See the notice.md file distributed with this work for additional
 4 * information regarding copyright ownership.
 5 *
 6 * Licensed under the Apache License, Version 2.0 (the "License");
 7 * you may not use this file except in compliance with the License.
 8 * You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18package org.fusesource.scalate.jade
19
20import java.io.File
21
22import org.fusesource.scalate.scaml._
23import org.fusesource.scalate.util.IOUtil
24
25import scala.util.parsing.input.CharSequenceReader
26
27/**
28 * <p>
29 * Parser for a more concise version of haml/scaml inspired by jade:
30 * http://github.com/visionmedia/jade
31 * </p>
32 *
33 * @author <a href="http://hiramchirino.com">Hiram Chirino</a>
34 */
35class JadeParser extends ScamlParser {
36
37  override def full_element_statement: Parser[Element] =
38    opt(tag_ident) ~ attributes ~ opt(trim) <~ ("/" ~! opt_space ~ nl) ^^ {
39      case (tag ~ attributes ~ wsc) => Element(tag, attributes, None, List(), wsc, true)
40    } |
41      opt(tag_ident) ~ attributes ~ opt(trim) ~ element_text ~ statement_block ^^ {
42        case ((tag ~ attributes ~ wsc ~ text) ~ body) => Element(tag, attributes, text, body, wsc, false)
43      }
44
45  override def element_statement: Parser[Element] = full_element_statement
46
47  override def text_statement = (
48    prefixed("""\""", literal_text(None)) |
49    prefixed("&==" ~ opt_space, literal_text(Some(true))) |
50    prefixed("!==" ~ opt_space, literal_text(Some(false))) |
51    prefixed("&" ~ space, literal_text(Some(true))) |
52    prefixed("!" ~ space, literal_text(Some(false))) |
53    prefixed("|" ~ opt_space, literal_text(None)) |
54    guarded("<", literal_text(None))) <~ any_space_then_nl
55
56}
57
58object JadeParser {
59  def main(args: Array[String]) = {
60    val in = IOUtil.loadTextFile(new File(args(0)))
61    val p = new JadeParser
62    println(p.phrase(p.parser)(new CharSequenceReader(in)))
63  }
64}