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The JWebSwing implementation for Source Code Prettify

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// Copyright (C) 2013 Nikhil Dabas
//
// 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.


/**
 * @fileoverview
 * Registers a language handler for LLVM.
 * From https://gist.github.com/ndabas/2850418
 *
 *
 * To use, include prettify.js and this file in your HTML page.
 * Then put your code in an HTML tag like
 *      (my LLVM code)
 *
 *
 * The regular expressions were adapted from:
 * https://github.com/hansstimer/llvm.tmbundle/blob/76fedd8f50fd6108b1780c51d79fbe3223de5f34/Syntaxes/LLVM.tmLanguage
 *
 * http://llvm.org/docs/LangRef.html#constants describes the language grammar.
 *
 * @author Nikhil Dabas
 */
PR['registerLangHandler'](
    PR['createSimpleLexer'](
        [
            // Whitespace
            [PR['PR_PLAIN'], /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'],
            // A double quoted, possibly multi-line, string.
            [PR['PR_STRING'], /^!?\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)/, null, '"'],
            // comment.llvm
            [PR['PR_COMMENT'], /^;[^\r\n]*/, null, ';']
        ],
        [
            // variable.llvm
            [PR['PR_PLAIN'], /^[%@!](?:[-a-zA-Z$._][-a-zA-Z$._0-9]*|\d+)/],

            // According to http://llvm.org/docs/LangRef.html#well-formedness
            // These reserved words cannot conflict with variable names, because none of them start with a prefix character ('%' or '@').
            [PR['PR_KEYWORD'], /^[A-Za-z_][0-9A-Za-z_]*/, null],

            // constant.numeric.float.llvm
            [PR['PR_LITERAL'], /^\d+\.\d+/],

            // constant.numeric.integer.llvm
            [PR['PR_LITERAL'], /^(?:\d+|0[xX][a-fA-F0-9]+)/],

            // punctuation
            [PR['PR_PUNCTUATION'], /^[()\[\]{},=*<>:]|\.\.\.$/]
        ]),
    ['llvm', 'll']);