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1 // Copyright (C) 2012 Jeffrey B. Arnold | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 | |
15 | |
16 /** | |
17 * @fileoverview | |
18 * Registers a language handler for S, S-plus, and R source code. | |
19 * | |
20 * | |
21 * To use, include prettify.js and this file in your HTML page. | |
22 * Then put your code in an HTML tag like | |
23 * <pre class="prettyprint lang-r"> code </pre> | |
24 * | |
25 * Language definition from | |
26 * http://cran.r-project.org/doc/manuals/R-lang.html. | |
27 * Many of the regexes are shared with the pygments SLexer, | |
28 * http://pygments.org/. | |
29 * | |
30 * Original: https://raw.github.com/jrnold/prettify-lang-r-bugs/master/lang-r.js | |
31 * | |
32 * @author jeffrey.arnold@gmail.com | |
33 */ | |
34 PR['registerLangHandler']( | |
35 PR['createSimpleLexer']( | |
36 [ | |
37 [PR['PR_PLAIN'], /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'], | |
38 [PR['PR_STRING'], /^\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)/, null, '"'
], | |
39 [PR['PR_STRING'], /^\'(?:[^\'\\]|\\[\s\S])*(?:\'|$)/, null, "'"
] | |
40 ], | |
41 [ | |
42 [PR['PR_COMMENT'], /^#.*/], | |
43 [PR['PR_KEYWORD'], /^(?:if|else|for|while|repeat|in|next|break|r
eturn|switch|function)(?![A-Za-z0-9_.])/], | |
44 // hex numbes | |
45 [PR['PR_LITERAL'], /^0[xX][a-fA-F0-9]+([pP][0-9]+)?[Li]?/], | |
46 // Decimal numbers | |
47 [PR['PR_LITERAL'], /^[+-]?([0-9]+(\.[0-9]+)?|\.[0-9]+)([eE][+-]?[0-9
]+)?[Li]?/], | |
48 // builtin symbols | |
49 [PR['PR_LITERAL'], /^(?:NULL|NA(?:_(?:integer|real|complex|character
)_)?|Inf|TRUE|FALSE|NaN|\.\.(?:\.|[0-9]+))(?![A-Za-z0-9_.])/], | |
50 // assignment, operators, and parens, etc. | |
51 [PR['PR_PUNCTUATION'], /^(?:<<?-|->>?|-|==|<=|>=|<|>|&&?|!=|\|\|?|\*
|\+|\^|\/|!|%.*?%|=|~|\$|@|:{1,3}|[\[\](){};,?])/], | |
52 // valid variable names | |
53 [PR['PR_PLAIN'], /^(?:[A-Za-z]+[A-Za-z0-9_.]*|\.[a-zA-Z_][0-9a-zA-Z\
._]*)(?![A-Za-z0-9_.])/], | |
54 // string backtick | |
55 [PR['PR_STRING'], /^`.+`/] | |
56 ]), | |
57 ['r', 's', 'R', 'S', 'Splus']); | |
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