javascript-hint.js (6437B)
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 (function(mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("../../lib/codemirror")); 7 else if (typeof define == "function" && define.amd) // AMD 8 define(["../../lib/codemirror"], mod); 9 else // Plain browser env 10 mod(CodeMirror); 11 })(function(CodeMirror) { 12 var Pos = CodeMirror.Pos; 13 14 function forEach(arr, f) { 15 for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]); 16 } 17 18 function arrayContains(arr, item) { 19 if (!Array.prototype.indexOf) { 20 var i = arr.length; 21 while (i--) { 22 if (arr[i] === item) { 23 return true; 24 } 25 } 26 return false; 27 } 28 return arr.indexOf(item) != -1; 29 } 30 31 function scriptHint(editor, keywords, getToken, options) { 32 // Find the token at the cursor 33 var cur = editor.getCursor(), token = getToken(editor, cur); 34 if (/\b(?:string|comment)\b/.test(token.type)) return; 35 token.state = CodeMirror.innerMode(editor.getMode(), token.state).state; 36 37 // If it's not a 'word-style' token, ignore the token. 38 if (!/^[\w$_]*$/.test(token.string)) { 39 token = {start: cur.ch, end: cur.ch, string: "", state: token.state, 40 type: token.string == "." ? "property" : null}; 41 } else if (token.end > cur.ch) { 42 token.end = cur.ch; 43 token.string = token.string.slice(0, cur.ch - token.start); 44 } 45 46 var tprop = token; 47 // If it is a property, find out what it is a property of. 48 while (tprop.type == "property") { 49 tprop = getToken(editor, Pos(cur.line, tprop.start)); 50 if (tprop.string != ".") return; 51 tprop = getToken(editor, Pos(cur.line, tprop.start)); 52 if (!context) var context = []; 53 context.push(tprop); 54 } 55 return {list: getCompletions(token, context, keywords, options), 56 from: Pos(cur.line, token.start), 57 to: Pos(cur.line, token.end)}; 58 } 59 60 function javascriptHint(editor, options) { 61 return scriptHint(editor, javascriptKeywords, 62 function (e, cur) {return e.getTokenAt(cur);}, 63 options); 64 }; 65 CodeMirror.registerHelper("hint", "javascript", javascriptHint); 66 67 function getCoffeeScriptToken(editor, cur) { 68 // This getToken, it is for coffeescript, imitates the behavior of 69 // getTokenAt method in javascript.js, that is, returning "property" 70 // type and treat "." as indepenent token. 71 var token = editor.getTokenAt(cur); 72 if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') { 73 token.end = token.start; 74 token.string = '.'; 75 token.type = "property"; 76 } 77 else if (/^\.[\w$_]*$/.test(token.string)) { 78 token.type = "property"; 79 token.start++; 80 token.string = token.string.replace(/\./, ''); 81 } 82 return token; 83 } 84 85 function coffeescriptHint(editor, options) { 86 return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken, options); 87 } 88 CodeMirror.registerHelper("hint", "coffeescript", coffeescriptHint); 89 90 var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " + 91 "toUpperCase toLowerCase split concat match replace search").split(" "); 92 var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " + 93 "lastIndexOf every some filter forEach map reduce reduceRight ").split(" "); 94 var funcProps = "prototype apply call bind".split(" "); 95 var javascriptKeywords = ("break case catch continue debugger default delete do else false finally for function " + 96 "if in instanceof new null return switch throw true try typeof var void while with").split(" "); 97 var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " + 98 "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(" "); 99 100 function forAllProps(obj, callback) { 101 if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) { 102 for (var name in obj) callback(name) 103 } else { 104 for (var o = obj; o; o = Object.getPrototypeOf(o)) 105 Object.getOwnPropertyNames(o).forEach(callback) 106 } 107 } 108 109 function getCompletions(token, context, keywords, options) { 110 var found = [], start = token.string, global = options && options.globalScope || window; 111 function maybeAdd(str) { 112 if (str.lastIndexOf(start, 0) == 0 && !arrayContains(found, str)) found.push(str); 113 } 114 function gatherCompletions(obj) { 115 if (typeof obj == "string") forEach(stringProps, maybeAdd); 116 else if (obj instanceof Array) forEach(arrayProps, maybeAdd); 117 else if (obj instanceof Function) forEach(funcProps, maybeAdd); 118 forAllProps(obj, maybeAdd) 119 } 120 121 if (context && context.length) { 122 // If this is a property, see if it belongs to some object we can 123 // find in the current environment. 124 var obj = context.pop(), base; 125 if (obj.type && obj.type.indexOf("variable") === 0) { 126 if (options && options.additionalContext) 127 base = options.additionalContext[obj.string]; 128 if (!options || options.useGlobalScope !== false) 129 base = base || global[obj.string]; 130 } else if (obj.type == "string") { 131 base = ""; 132 } else if (obj.type == "atom") { 133 base = 1; 134 } else if (obj.type == "function") { 135 if (global.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') && 136 (typeof global.jQuery == 'function')) 137 base = global.jQuery(); 138 else if (global._ != null && (obj.string == '_') && (typeof global._ == 'function')) 139 base = global._(); 140 } 141 while (base != null && context.length) 142 base = base[context.pop().string]; 143 if (base != null) gatherCompletions(base); 144 } else { 145 // If not, just look in the global object and any local scope 146 // (reading into JS mode internals to get at the local and global variables) 147 for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name); 148 for (var v = token.state.globalVars; v; v = v.next) maybeAdd(v.name); 149 if (!options || options.useGlobalScope !== false) 150 gatherCompletions(global); 151 forEach(keywords, maybeAdd); 152 } 153 return found; 154 } 155 });