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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://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 ==='"') {
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        stream.match(/^[^"]*"/);
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        return "string";
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      }
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      if (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) || systemKeywords.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", "call", "yield"]);
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    var systemKeywords = wordRegexp(["access", "active", "assign", "all", "alter", "as", "catalog", "change", "copy", "create", "constraint", "constraints", "current", "database", "databases", "dbms", "default", "deny", "drop", "element", "elements", "exists", "from", "grant", "graph", "graphs", "if", "index", "indexes", "label", "labels", "management", "match", "name", "names", "new", "node", "nodes", "not", "of", "on", "or", "password", "populated", "privileges", "property", "read", "relationship", "relationships", "remove", "replace", "required", "revoke", "role", "roles", "set", "show", "start", "status", "stop", "suspended", "to", "traverse", "type", "types", "user", "users", "with", "write"]);
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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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      },
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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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      },
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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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      var reProcessedPortion = /\s+\b(return|where|order by|match|with|skip|limit|create|delete|set)\b\s/g;
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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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