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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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// By the Neo4j Team and contributors.

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// https://github.com/neo4j-contrib/CodeMirror

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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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var wordRegexp = function(words) {

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return new RegExp("^(?:" + words.join("|") + ")$", "i");

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};

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CodeMirror.defineMode("cypher", function(config) {

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var tokenBase = function(stream/*, state*/) {

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var ch = stream.next();

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if (ch === "\"" || ch === "'") {

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stream.match(/.+?["']/);

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return "string";

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}

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if (/[{},\.;\[\]]/.test(ch)) {

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curPunc = ch;

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return "node";

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} else if (ch === "/" && stream.eat("/")) {

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stream.skipToEnd();

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return "comment";

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} else if (operatorChars.test(ch)) {

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stream.eatWhile(operatorChars);

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return null;

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} else {

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stream.eatWhile(/[_\w\d]/);

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if (stream.eat(":")) {

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stream.eatWhile(/[\w\d_\-]/);

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return "atom";

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}

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var word = stream.current();

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if (funcs.test(word)) return "builtin";

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if (preds.test(word)) return "def";

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if (keywords.test(word)) return "keyword";

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return "variable";

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}

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};

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var pushContext = function(state, type, col) {

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return state.context = {

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prev: state.context,

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indent: state.indent,

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col: col,

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type: type

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};

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};

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var popContext = function(state) {

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state.indent = state.context.indent;

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return state.context = state.context.prev;

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};

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var indentUnit = config.indentUnit;

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var curPunc;

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var funcs = wordRegexp(["abs", "acos", "allShortestPaths", "asin", "atan", "atan2", "avg", "ceil", "coalesce", "collect", "cos", "cot", "count", "degrees", "e", "endnode", "exp", "extract", "filter", "floor", "haversin", "head", "id", "keys", "labels", "last", "left", "length", "log", "log10", "lower", "ltrim", "max", "min", "node", "nodes", "percentileCont", "percentileDisc", "pi", "radians", "rand", "range", "reduce", "rel", "relationship", "relationships", "replace", "reverse", "right", "round", "rtrim", "shortestPath", "sign", "sin", "size", "split", "sqrt", "startnode", "stdev", "stdevp", "str", "substring", "sum", "tail", "tan", "timestamp", "toFloat", "toInt", "toString", "trim", "type", "upper"]);

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var preds = wordRegexp(["all", "and", "any", "contains", "exists", "has", "in", "none", "not", "or", "single", "xor"]);

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var keywords = wordRegexp(["as", "asc", "ascending", "assert", "by", "case", "commit", "constraint", "create", "csv", "cypher", "delete", "desc", "descending", "detach", "distinct", "drop", "else", "end", "ends", "explain", "false", "fieldterminator", "foreach", "from", "headers", "in", "index", "is", "join", "limit", "load", "match", "merge", "null", "on", "optional", "order", "periodic", "profile", "remove", "return", "scan", "set", "skip", "start", "starts", "then", "true", "union", "unique", "unwind", "using", "when", "where", "with"]);

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var operatorChars = /[*+\-<>=&|~%^]/;

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return {

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startState: function(/*base*/) {

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return {

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tokenize: tokenBase,

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context: null,

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indent: 0,

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col: 0

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};

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token: function(stream, state) {

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if (stream.sol()) {

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if (state.context && (state.context.align == null)) {

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state.context.align = false;

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}

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state.indent = stream.indentation();

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}

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if (stream.eatSpace()) {

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return null;

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}

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

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if (style !== "comment" && state.context && (state.context.align == null) && state.context.type !== "pattern") {

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state.context.align = true;

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}

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if (curPunc === "(") {

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pushContext(state, ")", stream.column());

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} else if (curPunc === "[") {

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pushContext(state, "]", stream.column());

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} else if (curPunc === "{") {

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pushContext(state, "}", stream.column());

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} else if (/[\]\}\)]/.test(curPunc)) {

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while (state.context && state.context.type === "pattern") {

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popContext(state);

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}

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if (state.context && curPunc === state.context.type) {

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popContext(state);

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}

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} else if (curPunc === "." && state.context && state.context.type === "pattern") {

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popContext(state);

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} else if (/atom|string|variable/.test(style) && state.context) {

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if (/[\}\]]/.test(state.context.type)) {

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pushContext(state, "pattern", stream.column());

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} else if (state.context.type === "pattern" && !state.context.align) {

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state.context.align = true;

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state.context.col = stream.column();

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}

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}

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return style;

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indent: function(state, textAfter) {

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var firstChar = textAfter && textAfter.charAt(0);

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var context = state.context;

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if (/[\]\}]/.test(firstChar)) {

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while (context && context.type === "pattern") {

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context = context.prev;

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}

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}

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var closing = context && firstChar === context.type;

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if (!context) return 0;

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if (context.type === "keywords") return CodeMirror.commands.newlineAndIndent;

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if (context.align) return context.col + (closing ? 0 : 1);

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return context.indent + (closing ? 0 : indentUnit);

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}

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};

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});

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CodeMirror.modeExtensions["cypher"] = {

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autoFormatLineBreaks: function(text) {

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var i, lines, reProcessedPortion;

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var lines = text.split("\n");

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for (var i = 0; i < lines.length; i++)

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lines[i] = lines[i].replace(reProcessedPortion, " \n$1 ").trim();

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return lines.join("\n");

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}

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};

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CodeMirror.defineMIME("application/x-cypher-query", "cypher");

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});

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