135 lines
5.3 KiB
JavaScript
135 lines
5.3 KiB
JavaScript
(function () {
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function forEach(arr, f) {
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for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
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}
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function arrayContains(arr, item) {
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if (!Array.prototype.indexOf) {
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var i = arr.length;
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while (i--) {
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if (arr[i] === item) {
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return true;
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}
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}
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return false;
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}
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return arr.indexOf(item) != -1;
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}
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function scriptHint(editor, keywords, getToken) {
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// Find the token at the cursor
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var cur = editor.getCursor(), token = getToken(editor, cur), tprop = token;
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// If it's not a 'word-style' token, ignore the token.
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if (!/^[\w$_]*$/.test(token.string)) {
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token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state,
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className: token.string == "." ? "property" : null};
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}
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// If it is a property, find out what it is a property of.
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while (tprop.className == "property") {
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tprop = getToken(editor, {line: cur.line, ch: tprop.start});
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if (tprop.string != ".") return;
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tprop = getToken(editor, {line: cur.line, ch: tprop.start});
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if (tprop.string == ')') {
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var level = 1;
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do {
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tprop = getToken(editor, {line: cur.line, ch: tprop.start});
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switch (tprop.string) {
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case ')': level++; break;
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case '(': level--; break;
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default: break;
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}
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} while (level > 0);
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tprop = getToken(editor, {line: cur.line, ch: tprop.start});
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if (tprop.className == 'variable')
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tprop.className = 'function';
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else return; // no clue
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}
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if (!context) var context = [];
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context.push(tprop);
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}
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return {list: getCompletions(token, context, keywords),
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from: {line: cur.line, ch: token.start},
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to: {line: cur.line, ch: token.end}};
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}
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CodeMirror.javascriptHint = function(editor) {
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return scriptHint(editor, javascriptKeywords,
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function (e, cur) {return e.getTokenAt(cur);});
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};
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function getCoffeeScriptToken(editor, cur) {
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// This getToken, it is for coffeescript, imitates the behavior of
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// getTokenAt method in javascript.js, that is, returning "property"
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// type and treat "." as indepenent token.
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var token = editor.getTokenAt(cur);
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if (cur.ch == token.start + 1 && token.string.charAt(0) == '.') {
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token.end = token.start;
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token.string = '.';
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token.className = "property";
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}
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else if (/^\.[\w$_]*$/.test(token.string)) {
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token.className = "property";
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token.start++;
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token.string = token.string.replace(/\./, '');
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}
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return token;
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}
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CodeMirror.coffeescriptHint = function(editor) {
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return scriptHint(editor, coffeescriptKeywords, getCoffeeScriptToken);
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};
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var stringProps = ("charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight " +
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"toUpperCase toLowerCase split concat match replace search").split(" ");
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var arrayProps = ("length concat join splice push pop shift unshift slice reverse sort indexOf " +
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"lastIndexOf every some filter forEach map reduce reduceRight ").split(" ");
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var funcProps = "prototype apply call bind".split(" ");
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var javascriptKeywords = ("break case catch continue debugger default delete do else false finally for function " +
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"if in instanceof new null return switch throw true try typeof var void while with").split(" ");
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var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
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"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(" ");
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function getCompletions(token, context, keywords) {
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var found = [], start = token.string;
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function maybeAdd(str) {
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if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str);
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}
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function gatherCompletions(obj) {
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if (typeof obj == "string") forEach(stringProps, maybeAdd);
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else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
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else if (obj instanceof Function) forEach(funcProps, maybeAdd);
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for (var name in obj) maybeAdd(name);
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}
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if (context) {
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// If this is a property, see if it belongs to some object we can
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// find in the current environment.
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var obj = context.pop(), base;
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if (obj.className == "variable")
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base = window[obj.string];
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else if (obj.className == "string")
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base = "";
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else if (obj.className == "atom")
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base = 1;
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else if (obj.className == "function") {
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if (window.jQuery != null && (obj.string == '$' || obj.string == 'jQuery') &&
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(typeof window.jQuery == 'function'))
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base = window.jQuery();
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else if (window._ != null && (obj.string == '_') && (typeof window._ == 'function'))
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base = window._();
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}
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while (base != null && context.length)
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base = base[context.pop().string];
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if (base != null) gatherCompletions(base);
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}
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else {
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// If not, just look in the window object and any local scope
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// (reading into JS mode internals to get at the local variables)
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for (var v = token.state.localVars; v; v = v.next) maybeAdd(v.name);
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gatherCompletions(window);
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forEach(keywords, maybeAdd);
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}
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return found;
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}
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})();
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