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// CodeMirror, copyright (c) by Marijn Haverbeke and others

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// Distributed under an MIT license: http://codemirror.net/LICENSE

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(function(mod) {

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if (typeof exports == "object" && typeof module == "object") // CommonJS

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mod(require("../../lib/codemirror"));

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else if (typeof define == "function" && define.amd) // AMD

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define(["../../lib/codemirror"], mod);

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else // Plain browser env

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mod(CodeMirror);

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})(function(CodeMirror) {

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"use strict";

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CodeMirror.defineMode("vb", function(conf, parserConf) {

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var ERRORCLASS = 'error';

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function wordRegexp(words) {

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return new RegExp("^((" + words.join(")|(") + "))\\b", "i");

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}

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var singleOperators = new RegExp("^[\\+\\-\\*/%&\\\\|\\^~<>!]");

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var singleDelimiters = new RegExp('^[\$\$\\[\\]\\{\\}@,:`=;\\.]');

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var doubleOperators = new RegExp("^((==)|(<>)|(<=)|(>=)|(<>)|(<<)|(>>)|(//)|(\\*\\*))");

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var doubleDelimiters = new RegExp("^((\\+=)|(\\-=)|(\\*=)|(%=)|(/=)|(&=)|(\\|=)|(\\^=))");

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var tripleDelimiters = new RegExp("^((//=)|(>>=)|(<<=)|(\\*\\*=))");

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var identifiers = new RegExp("^[_A-Za-z][_A-Za-z0-9]*");

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var openingKeywords = ['class','module', 'sub','enum','select','while','if','function', 'get','set','property', 'try'];

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var middleKeywords = ['else','elseif','case', 'catch'];

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var endKeywords = ['next','loop'];

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var operatorKeywords = ['and', 'or', 'not', 'xor', 'in'];

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var wordOperators = wordRegexp(operatorKeywords);

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var commonKeywords = ['as', 'dim', 'break', 'continue','optional', 'then', 'until',

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'goto', 'byval','byref','new','handles','property', 'return',

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'const','private', 'protected', 'friend', 'public', 'shared', 'static', 'true','false'];

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var commontypes = ['integer','string','double','decimal','boolean','short','char', 'float','single'];

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var keywords = wordRegexp(commonKeywords);

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var types = wordRegexp(commontypes);

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var stringPrefixes = '"';

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var opening = wordRegexp(openingKeywords);

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var middle = wordRegexp(middleKeywords);

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var closing = wordRegexp(endKeywords);

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var doubleClosing = wordRegexp(['end']);

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var doOpening = wordRegexp(['do']);

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var indentInfo = null;

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CodeMirror.registerHelper("hintWords", "vb", openingKeywords.concat(middleKeywords).concat(endKeywords)

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.concat(operatorKeywords).concat(commonKeywords).concat(commontypes));

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function indent(_stream, state) {

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state.currentIndent++;

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}

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function dedent(_stream, state) {

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state.currentIndent--;

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}

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// tokenizers

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function tokenBase(stream, state) {

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if (stream.eatSpace()) {

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return null;

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}

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var ch = stream.peek();

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// Handle Comments

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if (ch === "'") {

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stream.skipToEnd();

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return 'comment';

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}

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// Handle Number Literals

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if (stream.match(/^((&H)|(&O))?[0-9\.a-f]/i, false)) {

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var floatLiteral = false;

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// Floats

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if (stream.match(/^\d*\.\d+F?/i)) { floatLiteral = true; }

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else if (stream.match(/^\d+\.\d*F?/)) { floatLiteral = true; }

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else if (stream.match(/^\.\d+F?/)) { floatLiteral = true; }

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if (floatLiteral) {

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// Float literals may be "imaginary"

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stream.eat(/J/i);

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return 'number';

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}

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// Integers

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var intLiteral = false;

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// Hex

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if (stream.match(/^&H[0-9a-f]+/i)) { intLiteral = true; }

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// Octal

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else if (stream.match(/^&O[0-7]+/i)) { intLiteral = true; }

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// Decimal

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else if (stream.match(/^[1-9]\d*F?/)) {

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// Decimal literals may be "imaginary"

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stream.eat(/J/i);

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// TODO - Can you have imaginary longs?

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intLiteral = true;

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}

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// Zero by itself with no other piece of number.

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else if (stream.match(/^0(?![\dx])/i)) { intLiteral = true; }

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if (intLiteral) {

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// Integer literals may be "long"

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stream.eat(/L/i);

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return 'number';

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}

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}

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// Handle Strings

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if (stream.match(stringPrefixes)) {

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state.tokenize = tokenStringFactory(stream.current());

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return state.tokenize(stream, state);

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}

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// Handle operators and Delimiters

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if (stream.match(tripleDelimiters) || stream.match(doubleDelimiters)) {

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return null;

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}

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if (stream.match(doubleOperators)

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|| stream.match(singleOperators)

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|| stream.match(wordOperators)) {

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return 'operator';

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}

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if (stream.match(singleDelimiters)) {

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return null;

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}

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if (stream.match(doOpening)) {

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indent(stream,state);

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state.doInCurrentLine = true;

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return 'keyword';

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}

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if (stream.match(opening)) {

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if (! state.doInCurrentLine)

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indent(stream,state);

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else

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state.doInCurrentLine = false;

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return 'keyword';

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}

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if (stream.match(middle)) {

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return 'keyword';

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}

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if (stream.match(doubleClosing)) {

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dedent(stream,state);

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dedent(stream,state);

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return 'keyword';

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}

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if (stream.match(closing)) {

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dedent(stream,state);

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return 'keyword';

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}

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if (stream.match(types)) {

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return 'keyword';

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}

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if (stream.match(keywords)) {

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return 'keyword';

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}

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if (stream.match(identifiers)) {

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return 'variable';

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}

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// Handle non-detected items

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stream.next();

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return ERRORCLASS;

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}

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function tokenStringFactory(delimiter) {

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var singleline = delimiter.length == 1;

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var OUTCLASS = 'string';

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return function(stream, state) {

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while (!stream.eol()) {

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stream.eatWhile(/[^'"]/);

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if (stream.match(delimiter)) {

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state.tokenize = tokenBase;

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return OUTCLASS;

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} else {

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stream.eat(/['"]/);

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}

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}

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if (singleline) {

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if (parserConf.singleLineStringErrors) {

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return ERRORCLASS;

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} else {

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state.tokenize = tokenBase;

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}

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}

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return OUTCLASS;

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};

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}

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function tokenLexer(stream, state) {

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var style = state.tokenize(stream, state);

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var current = stream.current();

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// Handle '.' connected identifiers

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if (current === '.') {

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style = state.tokenize(stream, state);

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current = stream.current();

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if (style === 'variable') {

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return 'variable';

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} else {

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return ERRORCLASS;

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}

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}

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var delimiter_index = '[({'.indexOf(current);

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if (delimiter_index !== -1) {

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indent(stream, state );

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}

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if (indentInfo === 'dedent') {

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if (dedent(stream, state)) {

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return ERRORCLASS;

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}

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}

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delimiter_index = '])}'.indexOf(current);

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if (delimiter_index !== -1) {

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if (dedent(stream, state)) {

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return ERRORCLASS;

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}

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}

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return style;

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}

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var external = {

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electricChars:"dDpPtTfFeE ",

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startState: function() {

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return {

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tokenize: tokenBase,

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lastToken: null,

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currentIndent: 0,

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nextLineIndent: 0,

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doInCurrentLine: false

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};

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token: function(stream, state) {

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if (stream.sol()) {

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state.currentIndent += state.nextLineIndent;

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state.nextLineIndent = 0;

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state.doInCurrentLine = 0;

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}

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var style = tokenLexer(stream, state);

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state.lastToken = {style:style, content: stream.current()};

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return style;

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indent: function(state, textAfter) {

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var trueText = textAfter.replace(/^\s+|\s+$/g, '') ;

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if (trueText.match(closing) || trueText.match(doubleClosing) || trueText.match(middle)) return conf.indentUnit*(state.currentIndent-1);

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if(state.currentIndent < 0) return 0;

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return state.currentIndent * conf.indentUnit;

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lineComment: "'"

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};

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return external;

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});

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CodeMirror.defineMIME("text/x-vb", "vb");

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});

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