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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/LICENSE
   3  
   4  // By the Neo4j Team and contributors.
   5  // https://github.com/neo4j-contrib/CodeMirror
   6  
   7  (function(mod) {
   8    if (typeof exports == "object" && typeof module == "object") // CommonJS
   9      mod(require("../../lib/codemirror"));
  10    else if (typeof define == "function" && define.amd) // AMD
  11      define(["../../lib/codemirror"], mod);
  12    else // Plain browser env
  13      mod(CodeMirror);
  14  })(function(CodeMirror) {
  15    "use strict";
  16    var wordRegexp = function(words) {
  17      return new RegExp("^(?:" + words.join("|") + ")$", "i");
  18    };
  19  
  20    CodeMirror.defineMode("cypher", function(config) {
  21      var tokenBase = function(stream/*, state*/) {
  22        curPunc = null
  23        var ch = stream.next();
  24        if (ch ==='"') {
  25          stream.match(/^[^"]*"/);
  26          return "string";
  27        }
  28        if (ch === "'") {
  29          stream.match(/^[^']*'/);
  30          return "string";
  31        }
  32        if (/[{}\(\),\.;\[\]]/.test(ch)) {
  33          curPunc = ch;
  34          return "node";
  35        } else if (ch === "/" && stream.eat("/")) {
  36          stream.skipToEnd();
  37          return "comment";
  38        } else if (operatorChars.test(ch)) {
  39          stream.eatWhile(operatorChars);
  40          return null;
  41        } else {
  42          stream.eatWhile(/[_\w\d]/);
  43          if (stream.eat(":")) {
  44            stream.eatWhile(/[\w\d_\-]/);
  45            return "atom";
  46          }
  47          var word = stream.current();
  48          if (funcs.test(word)) return "builtin";
  49          if (preds.test(word)) return "def";
  50          if (keywords.test(word) || systemKeywords.test(word)) return "keyword";
  51          return "variable";
  52        }
  53      };
  54      var pushContext = function(state, type, col) {
  55        return state.context = {
  56          prev: state.context,
  57          indent: state.indent,
  58          col: col,
  59          type: type
  60        };
  61      };
  62      var popContext = function(state) {
  63        state.indent = state.context.indent;
  64        return state.context = state.context.prev;
  65      };
  66      var indentUnit = config.indentUnit;
  67      var curPunc;
  68      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"]);
  69      var preds = wordRegexp(["all", "and", "any", "contains", "exists", "has", "in", "none", "not", "or", "single", "xor"]);
  70      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"]);
  71      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"]);
  72      var operatorChars = /[*+\-<>=&|~%^]/;
  73  
  74      return {
  75        startState: function(/*base*/) {
  76          return {
  77            tokenize: tokenBase,
  78            context: null,
  79            indent: 0,
  80            col: 0
  81          };
  82        },
  83        token: function(stream, state) {
  84          if (stream.sol()) {
  85            if (state.context && (state.context.align == null)) {
  86              state.context.align = false;
  87            }
  88            state.indent = stream.indentation();
  89          }
  90          if (stream.eatSpace()) {
  91            return null;
  92          }
  93          var style = state.tokenize(stream, state);
  94          if (style !== "comment" && state.context && (state.context.align == null) && state.context.type !== "pattern") {
  95            state.context.align = true;
  96          }
  97          if (curPunc === "(") {
  98            pushContext(state, ")", stream.column());
  99          } else if (curPunc === "[") {
 100            pushContext(state, "]", stream.column());
 101          } else if (curPunc === "{") {
 102            pushContext(state, "}", stream.column());
 103          } else if (/[\]\}\)]/.test(curPunc)) {
 104            while (state.context && state.context.type === "pattern") {
 105              popContext(state);
 106            }
 107            if (state.context && curPunc === state.context.type) {
 108              popContext(state);
 109            }
 110          } else if (curPunc === "." && state.context && state.context.type === "pattern") {
 111            popContext(state);
 112          } else if (/atom|string|variable/.test(style) && state.context) {
 113            if (/[\}\]]/.test(state.context.type)) {
 114              pushContext(state, "pattern", stream.column());
 115            } else if (state.context.type === "pattern" && !state.context.align) {
 116              state.context.align = true;
 117              state.context.col = stream.column();
 118            }
 119          }
 120          return style;
 121        },
 122        indent: function(state, textAfter) {
 123          var firstChar = textAfter && textAfter.charAt(0);
 124          var context = state.context;
 125          if (/[\]\}]/.test(firstChar)) {
 126            while (context && context.type === "pattern") {
 127              context = context.prev;
 128            }
 129          }
 130          var closing = context && firstChar === context.type;
 131          if (!context) return 0;
 132          if (context.type === "keywords") return CodeMirror.commands.newlineAndIndent;
 133          if (context.align) return context.col + (closing ? 0 : 1);
 134          return context.indent + (closing ? 0 : indentUnit);
 135        }
 136      };
 137    });
 138  
 139    CodeMirror.modeExtensions["cypher"] = {
 140      autoFormatLineBreaks: function(text) {
 141        var i, lines, reProcessedPortion;
 142        var lines = text.split("\n");
 143        var reProcessedPortion = /\s+\b(return|where|order by|match|with|skip|limit|create|delete|set)\b\s/g;
 144        for (var i = 0; i < lines.length; i++)
 145          lines[i] = lines[i].replace(reProcessedPortion, " \n$1 ").trim();
 146        return lines.join("\n");
 147      }
 148    };
 149  
 150    CodeMirror.defineMIME("application/x-cypher-query", "cypher");
 151  
 152  });