1 | /*
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2 | * 10/08/2011
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3 | *
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4 | * FoldParserManager.java - Used by RSTA to determine what fold parser to use
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5 | * for each language it supports.
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6 | *
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7 | * This library is distributed under a modified BSD license. See the included
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8 | * RSyntaxTextArea.License.txt file for details.
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9 | */
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10 | package org.fife.ui.rsyntaxtextarea.folding;
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11 |
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12 | import java.util.HashMap;
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13 | import java.util.Map;
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14 |
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15 | import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
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16 |
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17 |
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18 | /**
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19 | * Manages fold parsers. Instances of <code>RSyntaxTextArea</code> call into
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20 | * this class to retrieve fold parsers for whatever language they're editing.
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21 | * Folks implementing custom languages can add a {@link FoldParser}
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22 | * implementation for their language to this manager and it will be used by
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23 | * RSTA.
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24 | *
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25 | * @author Robert Futrell
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26 | * @version 1.0
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27 | */
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28 | public class FoldParserManager implements SyntaxConstants {
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29 |
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30 | /**
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31 | * Map from syntax styles to fold parsers.
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32 | */
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33 | private Map foldParserMap;
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34 |
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35 | private static final FoldParserManager INSTANCE = new FoldParserManager();
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36 |
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37 |
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38 | /**
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39 | * Private constructor to prevent instantiation.
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40 | */
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41 | private FoldParserManager() {
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42 | foldParserMap = createFoldParserMap();
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43 | }
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44 |
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45 |
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46 | /**
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47 | * Adds a mapping from a syntax style to a fold parser. The parser
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48 | * specified will be shared among all RSTA instances editing that language,
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49 | * so it should be stateless (which should not be difficult for a fold
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50 | * parser). You can also override the fold parser for built-in languages,
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51 | * such as <code>SYNTAX_STYLE_JAVA</code>, with your own parser
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52 | * implementations.
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53 | *
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54 | * @param syntaxStyle The syntax style.
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55 | * @param parser The parser.
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56 | * @see SyntaxConstants
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57 | */
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58 | public void addFoldParserMapping(String syntaxStyle, FoldParser parser) {
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59 | foldParserMap.put(syntaxStyle, parser);
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60 | }
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61 |
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62 |
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63 | /**
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64 | * Creates the syntax style-to-fold parser mapping for built-in languages.
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65 | * @return
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66 | */
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67 | private Map createFoldParserMap() {
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68 |
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69 | Map map = new HashMap();
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70 |
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71 | map.put(SYNTAX_STYLE_C, new CurlyFoldParser());
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72 | map.put(SYNTAX_STYLE_CPLUSPLUS, new CurlyFoldParser());
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73 | map.put(SYNTAX_STYLE_CSHARP, new CurlyFoldParser());
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74 | map.put(SYNTAX_STYLE_CSS, new CurlyFoldParser());
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75 | map.put(SYNTAX_STYLE_GROOVY, new CurlyFoldParser());
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76 | map.put(SYNTAX_STYLE_JAVA, new CurlyFoldParser(true, true));
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77 | map.put(SYNTAX_STYLE_JAVASCRIPT, new CurlyFoldParser());
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78 | map.put(SYNTAX_STYLE_LATEX, new LatexFoldParser());
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79 | map.put(SYNTAX_STYLE_MXML, new XmlFoldParser());
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80 | map.put(SYNTAX_STYLE_PERL, new CurlyFoldParser());
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81 | map.put(SYNTAX_STYLE_XML, new XmlFoldParser());
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82 |
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83 | return map;
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84 |
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85 | }
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86 |
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87 |
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88 | /**
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89 | * Returns the singleton instance of this class.
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90 | *
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91 | * @return The singleton instance.
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92 | */
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93 | public static FoldParserManager get() {
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94 | return INSTANCE;
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95 | }
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96 |
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97 |
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98 | /**
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99 | * Returns a fold parser to use for an editor highlighting code of a
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100 | * specific language.
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101 | *
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102 | * @param syntaxStyle A value from {@link SyntaxConstants}, such as
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103 | * <code>SYNTAX_STYLE_JAVA</code>.
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104 | * @return A fold parser to use, or <code>null</code> if none is registered
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105 | * for the language.
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106 | */
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107 | public FoldParser getFoldParser(String syntaxStyle) {
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108 | return (FoldParser)foldParserMap.get(syntaxStyle);
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109 | }
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110 |
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111 |
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112 | } |
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