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rpg-docs/public/bower_components/google-code-prettify/src/lang-erlang.js
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rpg-docs/public/bower_components/google-code-prettify/src/lang-erlang.js
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// Copyright (C) 2013 Andrew Allen
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview
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* Registers a language handler for Erlang.
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*
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* Derived from https://raw.github.com/erlang/otp/dev/lib/compiler/src/core_parse.yrl
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* Modified from Mike Samuel's Haskell plugin for google-code-prettify
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*
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* @author achew22@gmail.com
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*/
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PR['registerLangHandler'](
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PR['createSimpleLexer'](
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[
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// Whitespace
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// whitechar -> newline | vertab | space | tab | uniWhite
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// newline -> return linefeed | return | linefeed | formfeed
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[PR['PR_PLAIN'], /^[\t\n\x0B\x0C\r ]+/, null, '\t\n\x0B\x0C\r '],
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// Single line double-quoted strings.
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[PR['PR_STRING'], /^\"(?:[^\"\\\n\x0C\r]|\\[\s\S])*(?:\"|$)/,
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null, '"'],
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// Handle atoms
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[PR['PR_LITERAL'], /^[a-z][a-zA-Z0-9_]*/],
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// Handle single quoted atoms
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[PR['PR_LITERAL'], /^\'(?:[^\'\\\n\x0C\r]|\\[^&])+\'?/,
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null, "'"],
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// Handle macros. Just to be extra clear on this one, it detects the ?
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// then uses the regexp to end it so be very careful about matching
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// all the terminal elements
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[PR['PR_LITERAL'], /^\?[^ \t\n({]+/, null, "?"],
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// decimal -> digit{digit}
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// octal -> octit{octit}
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// hexadecimal -> hexit{hexit}
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// integer -> decimal
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// | 0o octal | 0O octal
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// | 0x hexadecimal | 0X hexadecimal
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// float -> decimal . decimal [exponent]
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// | decimal exponent
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// exponent -> (e | E) [+ | -] decimal
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[PR['PR_LITERAL'],
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/^(?:0o[0-7]+|0x[\da-f]+|\d+(?:\.\d+)?(?:e[+\-]?\d+)?)/i,
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null, '0123456789']
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],
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[
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// TODO: catch @declarations inside comments
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// Comments in erlang are started with % and go till a newline
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[PR['PR_COMMENT'], /^%[^\n]*/],
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// Catch macros
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//[PR['PR_TAG'], /?[^( \n)]+/],
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/**
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* %% Keywords (atoms are assumed to always be single-quoted).
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* 'module' 'attributes' 'do' 'let' 'in' 'letrec'
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* 'apply' 'call' 'primop'
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* 'case' 'of' 'end' 'when' 'fun' 'try' 'catch' 'receive' 'after'
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*/
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[PR['PR_KEYWORD'], /^(?:module|attributes|do|let|in|letrec|apply|call|primop|case|of|end|when|fun|try|catch|receive|after|char|integer|float,atom,string,var)\b/],
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/**
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* Catch definitions (usually defined at the top of the file)
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* Anything that starts -something
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*/
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[PR['PR_KEYWORD'], /^-[a-z_]+/],
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// Catch variables
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[PR['PR_TYPE'], /^[A-Z_][a-zA-Z0-9_]*/],
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// matches the symbol production
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[PR['PR_PUNCTUATION'], /^[.,;]/]
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]),
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['erlang', 'erl']);
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