// 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("spreadsheet", function () {

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return {

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startState: function () {

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return {

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stringType: null,

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stack: []

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};

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},

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token: function (stream, state) {

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if (!stream) return;

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//check for state changes

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if (state.stack.length === 0) {

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//strings

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if ((stream.peek() == '"') || (stream.peek() == "'")) {

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state.stringType = stream.peek();

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stream.next(); // Skip quote

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state.stack.unshift("string");

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}

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}

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//return state

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//stack has

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switch (state.stack[0]) {

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case "string":

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while (state.stack[0] === "string" && !stream.eol()) {

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if (stream.peek() === state.stringType) {

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stream.next(); // Skip quote

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state.stack.shift(); // Clear flag

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} else if (stream.peek() === "\\") {

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stream.next();

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stream.next();

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} else {

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stream.match(/^.[^\\\"\']*/);

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}

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}

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return "string";

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case "characterClass":

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while (state.stack[0] === "characterClass" && !stream.eol()) {

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if (!(stream.match(/^[^\]\\]+/) || stream.match(/^\\./)))

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state.stack.shift();

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}

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return "operator";

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}

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var peek = stream.peek();

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//no stack

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switch (peek) {

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case "[":

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stream.next();

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state.stack.unshift("characterClass");

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return "bracket";

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case ":":

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stream.next();

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return "operator";

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case "\\":

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if (stream.match(/\\[a-z]+/)) return "string-2";

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else {

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stream.next();

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return "atom";

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}

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case ".":

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case ",":

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case ";":

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case "*":

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case "-":

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case "+":

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case "^":

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case "<":

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case "/":

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case "=":

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stream.next();

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return "atom";

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case "$":

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stream.next();

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return "builtin";

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}

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if (stream.match(/\d+/)) {

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if (stream.match(/^\w+/)) return "error";

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return "number";

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} else if (stream.match(/^[a-zA-Z_]\w*/)) {

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if (stream.match(/(?=[\(.])/, false)) return "keyword";

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return "variable-2";

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} else if (["[", "]", "(", ")", "{", "}"].indexOf(peek) != -1) {

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stream.next();

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return "bracket";

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} else if (!stream.eatSpace()) {

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stream.next();

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}

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return null;

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}

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};

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});

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

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});

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