git.r.bdr.sh - rbdr/dotfiles/blob - atom/packages/pretty-json/node_modules/jsonminify/report/assets/scripts/vendor/codemirror/util/javascript-hint.js

   1 (function () {
   2   function forEach(arr, f) {
   3     for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
   4   }
   5
   6   function arrayContains(arr, item) {
   7     if (!Array.prototype.indexOf) {
   8       var i = arr.length;
   9       while (i--) {
  10         if (arr[i] === item) {
  11           return true;
  12         }
  13       }
  14       return false;
  15     }
  16     return arr.indexOf(item) != -1;
  17   }
  18
  19   function scriptHint(editor, keywords, getToken, options) {
  20     // Find the token at the cursor
  21     var cur = editor.getCursor(), token = getToken(editor, cur), tprop = token;
  22     // If it's not a 'word-style' token, ignore the token.
  23                 if (!/^[\w$_]*$/.test(token.string)) {
  24       token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state,
  25                        type: token.string == "." ? "property" : null};
  26     }
  27     // If it is a property, find out what it is a property of.
  28     while (tprop.type == "property") {
  29       tprop = getToken(editor, {line: cur.line, ch: tprop.start});
  30       if (tprop.string != ".") return;
  31       tprop = getToken(editor, {line: cur.line, ch: tprop.start});
  32       if (tprop.string == ')') {
  33         var level = 1;
  34         do {
  35           tprop = getToken(editor, {line: cur.line, ch: tprop.start});
  36           switch (tprop.string) {
  37           case ')': level++; break;
  38           case '(': level--; break;
  39           default: break;
  40           }
  41         } while (level > 0);
  42         tprop = getToken(editor, {line: cur.line, ch: tprop.start});
  43         if (tprop.type == 'variable')
  44           tprop.type = 'function';
  45         else return; // no clue
  46       }
  47       if (!context) var context = [];
  48       context.push(tprop);
  49     }
  50     return {list: getCompletions(token, context, keywords, options),
  51             from: {line: cur.line, ch: token.start},
  52             to: {line: cur.line, ch: token.end}};
  53   }
  54
  55   CodeMirror.javascriptHint = function(editor, options) {
  56     return scriptHint(editor, javascriptKeywords,
  57                       function (e, cur) {return e.getTokenAt(cur);},
  58                       options);
  59   };
  60
  61   function getCoffeeScriptToken(editor, cur) {
  62   // This getToken, it is for coffeescript, imitates the behavior of
  63   // getTokenAt method in javascript.js, that is, returning "property"
  64   // type and treat "." as indepenent token.
  65     var token = editor.getTokenAt(cur);
  66     if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') {
  67       token.end = token.start;
  68       token.string = '.';
  69       token.type = "property";
  70     }
  71     else if (/^\.[\w$_]*$/.test(token.string)) {
  72       token.type = "property";
  73       token.start++;
  74       token.string = token.string.replace(/\./, '');
  75     }
  76     return token;
  77   }
  78
  79   CodeMirror.coffeescriptHint = function(editor, options) {
  80     return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken, options);
  81   };
  82
  83   var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
  84                      "toUpperCase toLowerCase split concat match replace search").split(" ");
  85   var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
  86                     "lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
  87   var funcProps = "prototype apply call bind".split(" ");
  88   var javascriptKeywords = ("break case catch continue debugger default delete do else false finally for function " +
  89                   "if in instanceof new null return switch throw true try typeof var void while with").split(" ");
  90   var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
  91                   "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");
  92
  93   function getCompletions(token, context, keywords, options) {
  94     var found = [], start = token.string;
  95     function maybeAdd(str) {
  96       if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str);
  97     }
  98     function gatherCompletions(obj) {
  99       if (typeof obj == "string") forEach(stringProps, maybeAdd);
 100       else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
 101       else if (obj instanceof Function) forEach(funcProps, maybeAdd);
 102       for (var name in obj) maybeAdd(name);
 103     }
 104
 105     if (context) {
 106       // If this is a property, see if it belongs to some object we can
 107       // find in the current environment.
 108       var obj = context.pop(), base;
 109       if (obj.type == "variable") {
 110         if (options && options.additionalContext)
 111           base = options.additionalContext[obj.string];
 112         base = base || window[obj.string];
 113       } else if (obj.type == "string") {
 114         base = "";
 115       } else if (obj.type == "atom") {
 116         base = 1;
 117       } else if (obj.type == "function") {
 118         if (window.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') &&
 119             (typeof window.jQuery == 'function'))
 120           base = window.jQuery();
 121         else if (window._ != null && (obj.string == '_') && (typeof window._ == 'function'))
 122           base = window._();
 123       }
 124       while (base != null && context.length)
 125         base = base[context.pop().string];
 126       if (base != null) gatherCompletions(base);
 127     }
 128     else {
 129       // If not, just look in the window object and any local scope
 130       // (reading into JS mode internals to get at the local variables)
 131       for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
 132       gatherCompletions(window);
 133       forEach(keywords, maybeAdd);
 134     }
 135     return found;
 136   }
 137 })();