mirror of
https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
669 lines
23 KiB
JavaScript
669 lines
23 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://codemirror.net/LICENSE
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// Glue code between CodeMirror and Tern.
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//
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// Create a CodeMirror.TernServer to wrap an actual Tern server,
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// register open documents (CodeMirror.Doc instances) with it, and
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// call its methods to activate the assisting functions that Tern
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// provides.
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//
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// Options supported (all optional):
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// * defs: An array of JSON definition data structures.
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// * plugins: An object mapping plugin names to configuration
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// options.
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// * getFile: A function(name, c) that can be used to access files in
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// the project that haven't been loaded yet. Simply do c(null) to
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// indicate that a file is not available.
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// * fileFilter: A function(value, docName, doc) that will be applied
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// to documents before passing them on to Tern.
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// * switchToDoc: A function(name, doc) that should, when providing a
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// multi-file view, switch the view or focus to the named file.
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// * showError: A function(editor, message) that can be used to
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// override the way errors are displayed.
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// * completionTip: Customize the content in tooltips for completions.
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// Is passed a single argument—the completion's data as returned by
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// Tern—and may return a string, DOM node, or null to indicate that
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// no tip should be shown. By default the docstring is shown.
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// * typeTip: Like completionTip, but for the tooltips shown for type
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// queries.
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// * responseFilter: A function(doc, query, request, error, data) that
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// will be applied to the Tern responses before treating them
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//
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//
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// It is possible to run the Tern server in a web worker by specifying
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// these additional options:
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// * useWorker: Set to true to enable web worker mode. You'll probably
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// want to feature detect the actual value you use here, for example
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// !!window.Worker.
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// * workerScript: The main script of the worker. Point this to
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// wherever you are hosting worker.js from this directory.
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// * workerDeps: An array of paths pointing (relative to workerScript)
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// to the Acorn and Tern libraries and any Tern plugins you want to
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// load. Or, if you minified those into a single script and included
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// them in the workerScript, simply leave this undefined.
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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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// declare global: tern
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CodeMirror.TernServer = function(options) {
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var self = this;
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this.options = options || {};
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var plugins = this.options.plugins || (this.options.plugins = {});
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if (!plugins.doc_comment) plugins.doc_comment = true;
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if (this.options.useWorker) {
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this.server = new WorkerServer(this);
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} else {
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this.server = new tern.Server({
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getFile: function(name, c) { return getFile(self, name, c); },
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async: true,
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defs: this.options.defs || [],
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plugins: plugins
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});
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}
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this.docs = Object.create(null);
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this.trackChange = function(doc, change) { trackChange(self, doc, change); };
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this.cachedArgHints = null;
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this.activeArgHints = null;
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this.jumpStack = [];
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this.getHint = function(cm, c) { return hint(self, cm, c); };
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this.getHint.async = true;
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};
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CodeMirror.TernServer.prototype = {
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addDoc: function(name, doc) {
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var data = {doc: doc, name: name, changed: null};
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this.server.addFile(name, docValue(this, data));
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CodeMirror.on(doc, "change", this.trackChange);
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return this.docs[name] = data;
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},
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delDoc: function(id) {
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var found = resolveDoc(this, id);
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if (!found) return;
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CodeMirror.off(found.doc, "change", this.trackChange);
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delete this.docs[found.name];
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this.server.delFile(found.name);
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},
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hideDoc: function(id) {
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closeArgHints(this);
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var found = resolveDoc(this, id);
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if (found && found.changed) sendDoc(this, found);
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},
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complete: function(cm) {
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cm.showHint({hint: this.getHint});
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},
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showType: function(cm, pos, c) { showType(this, cm, pos, c); },
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updateArgHints: function(cm) { updateArgHints(this, cm); },
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jumpToDef: function(cm) { jumpToDef(this, cm); },
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jumpBack: function(cm) { jumpBack(this, cm); },
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rename: function(cm) { rename(this, cm); },
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selectName: function(cm) { selectName(this, cm); },
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request: function (cm, query, c, pos) {
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var self = this;
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var doc = findDoc(this, cm.getDoc());
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var request = buildRequest(this, doc, query, pos);
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this.server.request(request, function (error, data) {
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if (!error && self.options.responseFilter)
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data = self.options.responseFilter(doc, query, request, error, data);
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c(error, data);
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});
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}
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};
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var Pos = CodeMirror.Pos;
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var cls = "CodeMirror-Tern-";
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var bigDoc = 250;
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function getFile(ts, name, c) {
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var buf = ts.docs[name];
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if (buf)
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c(docValue(ts, buf));
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else if (ts.options.getFile)
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ts.options.getFile(name, c);
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else
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c(null);
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}
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function findDoc(ts, doc, name) {
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for (var n in ts.docs) {
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var cur = ts.docs[n];
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if (cur.doc == doc) return cur;
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}
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if (!name) for (var i = 0;; ++i) {
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n = "[doc" + (i || "") + "]";
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if (!ts.docs[n]) { name = n; break; }
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}
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return ts.addDoc(name, doc);
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}
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function resolveDoc(ts, id) {
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if (typeof id == "string") return ts.docs[id];
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if (id instanceof CodeMirror) id = id.getDoc();
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if (id instanceof CodeMirror.Doc) return findDoc(ts, id);
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}
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function trackChange(ts, doc, change) {
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var data = findDoc(ts, doc);
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var argHints = ts.cachedArgHints;
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if (argHints && argHints.doc == doc && cmpPos(argHints.start, change.to) <= 0)
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ts.cachedArgHints = null;
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var changed = data.changed;
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if (changed == null)
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data.changed = changed = {from: change.from.line, to: change.from.line};
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var end = change.from.line + (change.text.length - 1);
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if (change.from.line < changed.to) changed.to = changed.to - (change.to.line - end);
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if (end >= changed.to) changed.to = end + 1;
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if (changed.from > change.from.line) changed.from = change.from.line;
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if (doc.lineCount() > bigDoc && change.to - changed.from > 100) setTimeout(function() {
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if (data.changed && data.changed.to - data.changed.from > 100) sendDoc(ts, data);
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}, 200);
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}
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function sendDoc(ts, doc) {
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ts.server.request({files: [{type: "full", name: doc.name, text: docValue(ts, doc)}]}, function(error) {
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if (error) window.console.error(error);
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else doc.changed = null;
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});
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}
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// Completion
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function hint(ts, cm, c) {
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ts.request(cm, {type: "completions", types: true, docs: true, urls: true}, function(error, data) {
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if (error) return showError(ts, cm, error);
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var completions = [], after = "";
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var from = data.start, to = data.end;
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if (cm.getRange(Pos(from.line, from.ch - 2), from) == "[\"" &&
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cm.getRange(to, Pos(to.line, to.ch + 2)) != "\"]")
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after = "\"]";
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for (var i = 0; i < data.completions.length; ++i) {
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var completion = data.completions[i], className = typeToIcon(completion.type);
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if (data.guess) className += " " + cls + "guess";
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completions.push({text: completion.name + after,
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displayText: completion.name,
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className: className,
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data: completion});
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}
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var obj = {from: from, to: to, list: completions};
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var tooltip = null;
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CodeMirror.on(obj, "close", function() { remove(tooltip); });
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CodeMirror.on(obj, "update", function() { remove(tooltip); });
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CodeMirror.on(obj, "select", function(cur, node) {
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remove(tooltip);
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var content = ts.options.completionTip ? ts.options.completionTip(cur.data) : cur.data.doc;
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if (content) {
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tooltip = makeTooltip(node.parentNode.getBoundingClientRect().right + window.pageXOffset,
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node.getBoundingClientRect().top + window.pageYOffset, content);
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tooltip.className += " " + cls + "hint-doc";
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}
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});
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c(obj);
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});
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}
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function typeToIcon(type) {
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var suffix;
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if (type == "?") suffix = "unknown";
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else if (type == "number" || type == "string" || type == "bool") suffix = type;
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else if (/^fn\(/.test(type)) suffix = "fn";
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else if (/^\[/.test(type)) suffix = "array";
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else suffix = "object";
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return cls + "completion " + cls + "completion-" + suffix;
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}
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// Type queries
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function showType(ts, cm, pos, c) {
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ts.request(cm, "type", function(error, data) {
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if (error) return showError(ts, cm, error);
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if (ts.options.typeTip) {
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var tip = ts.options.typeTip(data);
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} else {
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var tip = elt("span", null, elt("strong", null, data.type || "not found"));
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if (data.doc)
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tip.appendChild(document.createTextNode(" — " + data.doc));
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if (data.url) {
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tip.appendChild(document.createTextNode(" "));
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tip.appendChild(elt("a", null, "[docs]")).href = data.url;
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}
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}
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tempTooltip(cm, tip);
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if (c) c();
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}, pos);
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}
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// Maintaining argument hints
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function updateArgHints(ts, cm) {
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closeArgHints(ts);
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if (cm.somethingSelected()) return;
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var state = cm.getTokenAt(cm.getCursor()).state;
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var inner = CodeMirror.innerMode(cm.getMode(), state);
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if (inner.mode.name != "javascript") return;
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var lex = inner.state.lexical;
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if (lex.info != "call") return;
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var ch, argPos = lex.pos || 0, tabSize = cm.getOption("tabSize");
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for (var line = cm.getCursor().line, e = Math.max(0, line - 9), found = false; line >= e; --line) {
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var str = cm.getLine(line), extra = 0;
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for (var pos = 0;;) {
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var tab = str.indexOf("\t", pos);
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if (tab == -1) break;
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extra += tabSize - (tab + extra) % tabSize - 1;
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pos = tab + 1;
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}
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ch = lex.column - extra;
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if (str.charAt(ch) == "(") {found = true; break;}
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}
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if (!found) return;
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var start = Pos(line, ch);
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var cache = ts.cachedArgHints;
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if (cache && cache.doc == cm.getDoc() && cmpPos(start, cache.start) == 0)
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return showArgHints(ts, cm, argPos);
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ts.request(cm, {type: "type", preferFunction: true, end: start}, function(error, data) {
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if (error || !data.type || !(/^fn\(/).test(data.type)) return;
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ts.cachedArgHints = {
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start: pos,
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type: parseFnType(data.type),
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name: data.exprName || data.name || "fn",
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guess: data.guess,
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doc: cm.getDoc()
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};
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showArgHints(ts, cm, argPos);
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});
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}
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function showArgHints(ts, cm, pos) {
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closeArgHints(ts);
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var cache = ts.cachedArgHints, tp = cache.type;
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var tip = elt("span", cache.guess ? cls + "fhint-guess" : null,
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elt("span", cls + "fname", cache.name), "(");
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for (var i = 0; i < tp.args.length; ++i) {
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if (i) tip.appendChild(document.createTextNode(", "));
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var arg = tp.args[i];
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tip.appendChild(elt("span", cls + "farg" + (i == pos ? " " + cls + "farg-current" : ""), arg.name || "?"));
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if (arg.type != "?") {
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tip.appendChild(document.createTextNode(":\u00a0"));
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tip.appendChild(elt("span", cls + "type", arg.type));
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}
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}
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tip.appendChild(document.createTextNode(tp.rettype ? ") ->\u00a0" : ")"));
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if (tp.rettype) tip.appendChild(elt("span", cls + "type", tp.rettype));
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var place = cm.cursorCoords(null, "page");
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ts.activeArgHints = makeTooltip(place.right + 1, place.bottom, tip);
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}
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function parseFnType(text) {
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var args = [], pos = 3;
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function skipMatching(upto) {
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var depth = 0, start = pos;
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for (;;) {
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var next = text.charAt(pos);
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if (upto.test(next) && !depth) return text.slice(start, pos);
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if (/[{\[\(]/.test(next)) ++depth;
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else if (/[}\]\)]/.test(next)) --depth;
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++pos;
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}
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}
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// Parse arguments
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if (text.charAt(pos) != ")") for (;;) {
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var name = text.slice(pos).match(/^([^, \(\[\{]+): /);
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if (name) {
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pos += name[0].length;
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name = name[1];
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}
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args.push({name: name, type: skipMatching(/[\),]/)});
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if (text.charAt(pos) == ")") break;
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pos += 2;
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}
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var rettype = text.slice(pos).match(/^\) -> (.*)$/);
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return {args: args, rettype: rettype && rettype[1]};
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}
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// Moving to the definition of something
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function jumpToDef(ts, cm) {
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function inner(varName) {
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var req = {type: "definition", variable: varName || null};
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var doc = findDoc(ts, cm.getDoc());
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ts.server.request(buildRequest(ts, doc, req), function(error, data) {
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if (error) return showError(ts, cm, error);
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if (!data.file && data.url) { window.open(data.url); return; }
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if (data.file) {
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var localDoc = ts.docs[data.file], found;
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if (localDoc && (found = findContext(localDoc.doc, data))) {
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ts.jumpStack.push({file: doc.name,
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start: cm.getCursor("from"),
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end: cm.getCursor("to")});
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moveTo(ts, doc, localDoc, found.start, found.end);
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return;
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}
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}
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showError(ts, cm, "Could not find a definition.");
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});
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}
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if (!atInterestingExpression(cm))
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dialog(cm, "Jump to variable", function(name) { if (name) inner(name); });
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else
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inner();
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}
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function jumpBack(ts, cm) {
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var pos = ts.jumpStack.pop(), doc = pos && ts.docs[pos.file];
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if (!doc) return;
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moveTo(ts, findDoc(ts, cm.getDoc()), doc, pos.start, pos.end);
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}
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function moveTo(ts, curDoc, doc, start, end) {
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doc.doc.setSelection(start, end);
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if (curDoc != doc && ts.options.switchToDoc) {
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closeArgHints(ts);
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ts.options.switchToDoc(doc.name, doc.doc);
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}
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}
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// The {line,ch} representation of positions makes this rather awkward.
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function findContext(doc, data) {
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var before = data.context.slice(0, data.contextOffset).split("\n");
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var startLine = data.start.line - (before.length - 1);
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var start = Pos(startLine, (before.length == 1 ? data.start.ch : doc.getLine(startLine).length) - before[0].length);
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var text = doc.getLine(startLine).slice(start.ch);
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for (var cur = startLine + 1; cur < doc.lineCount() && text.length < data.context.length; ++cur)
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text += "\n" + doc.getLine(cur);
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if (text.slice(0, data.context.length) == data.context) return data;
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var cursor = doc.getSearchCursor(data.context, 0, false);
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var nearest, nearestDist = Infinity;
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while (cursor.findNext()) {
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var from = cursor.from(), dist = Math.abs(from.line - start.line) * 10000;
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if (!dist) dist = Math.abs(from.ch - start.ch);
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if (dist < nearestDist) { nearest = from; nearestDist = dist; }
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}
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if (!nearest) return null;
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if (before.length == 1)
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nearest.ch += before[0].length;
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else
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nearest = Pos(nearest.line + (before.length - 1), before[before.length - 1].length);
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if (data.start.line == data.end.line)
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var end = Pos(nearest.line, nearest.ch + (data.end.ch - data.start.ch));
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else
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var end = Pos(nearest.line + (data.end.line - data.start.line), data.end.ch);
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return {start: nearest, end: end};
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}
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function atInterestingExpression(cm) {
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var pos = cm.getCursor("end"), tok = cm.getTokenAt(pos);
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if (tok.start < pos.ch && (tok.type == "comment" || tok.type == "string")) return false;
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return /\w/.test(cm.getLine(pos.line).slice(Math.max(pos.ch - 1, 0), pos.ch + 1));
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}
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// Variable renaming
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function rename(ts, cm) {
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var token = cm.getTokenAt(cm.getCursor());
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if (!/\w/.test(token.string)) return showError(ts, cm, "Not at a variable");
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dialog(cm, "New name for " + token.string, function(newName) {
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ts.request(cm, {type: "rename", newName: newName, fullDocs: true}, function(error, data) {
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if (error) return showError(ts, cm, error);
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applyChanges(ts, data.changes);
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});
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});
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}
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function selectName(ts, cm) {
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var name = findDoc(ts, cm.doc).name;
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ts.request(cm, {type: "refs"}, function(error, data) {
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if (error) return showError(ts, cm, error);
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var ranges = [], cur = 0;
|
|
for (var i = 0; i < data.refs.length; i++) {
|
|
var ref = data.refs[i];
|
|
if (ref.file == name) {
|
|
ranges.push({anchor: ref.start, head: ref.end});
|
|
if (cmpPos(cur, ref.start) >= 0 && cmpPos(cur, ref.end) <= 0)
|
|
cur = ranges.length - 1;
|
|
}
|
|
}
|
|
cm.setSelections(ranges, cur);
|
|
});
|
|
}
|
|
|
|
var nextChangeOrig = 0;
|
|
function applyChanges(ts, changes) {
|
|
var perFile = Object.create(null);
|
|
for (var i = 0; i < changes.length; ++i) {
|
|
var ch = changes[i];
|
|
(perFile[ch.file] || (perFile[ch.file] = [])).push(ch);
|
|
}
|
|
for (var file in perFile) {
|
|
var known = ts.docs[file], chs = perFile[file];;
|
|
if (!known) continue;
|
|
chs.sort(function(a, b) { return cmpPos(b.start, a.start); });
|
|
var origin = "*rename" + (++nextChangeOrig);
|
|
for (var i = 0; i < chs.length; ++i) {
|
|
var ch = chs[i];
|
|
known.doc.replaceRange(ch.text, ch.start, ch.end, origin);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Generic request-building helper
|
|
|
|
function buildRequest(ts, doc, query, pos) {
|
|
var files = [], offsetLines = 0, allowFragments = !query.fullDocs;
|
|
if (!allowFragments) delete query.fullDocs;
|
|
if (typeof query == "string") query = {type: query};
|
|
query.lineCharPositions = true;
|
|
if (query.end == null) {
|
|
query.end = pos || doc.doc.getCursor("end");
|
|
if (doc.doc.somethingSelected())
|
|
query.start = doc.doc.getCursor("start");
|
|
}
|
|
var startPos = query.start || query.end;
|
|
|
|
if (doc.changed) {
|
|
if (doc.doc.lineCount() > bigDoc && allowFragments !== false &&
|
|
doc.changed.to - doc.changed.from < 100 &&
|
|
doc.changed.from <= startPos.line && doc.changed.to > query.end.line) {
|
|
files.push(getFragmentAround(doc, startPos, query.end));
|
|
query.file = "#0";
|
|
var offsetLines = files[0].offsetLines;
|
|
if (query.start != null) query.start = Pos(query.start.line - -offsetLines, query.start.ch);
|
|
query.end = Pos(query.end.line - offsetLines, query.end.ch);
|
|
} else {
|
|
files.push({type: "full",
|
|
name: doc.name,
|
|
text: docValue(ts, doc)});
|
|
query.file = doc.name;
|
|
doc.changed = null;
|
|
}
|
|
} else {
|
|
query.file = doc.name;
|
|
}
|
|
for (var name in ts.docs) {
|
|
var cur = ts.docs[name];
|
|
if (cur.changed && cur != doc) {
|
|
files.push({type: "full", name: cur.name, text: docValue(ts, cur)});
|
|
cur.changed = null;
|
|
}
|
|
}
|
|
|
|
return {query: query, files: files};
|
|
}
|
|
|
|
function getFragmentAround(data, start, end) {
|
|
var doc = data.doc;
|
|
var minIndent = null, minLine = null, endLine, tabSize = 4;
|
|
for (var p = start.line - 1, min = Math.max(0, p - 50); p >= min; --p) {
|
|
var line = doc.getLine(p), fn = line.search(/\bfunction\b/);
|
|
if (fn < 0) continue;
|
|
var indent = CodeMirror.countColumn(line, null, tabSize);
|
|
if (minIndent != null && minIndent <= indent) continue;
|
|
minIndent = indent;
|
|
minLine = p;
|
|
}
|
|
if (minLine == null) minLine = min;
|
|
var max = Math.min(doc.lastLine(), end.line + 20);
|
|
if (minIndent == null || minIndent == CodeMirror.countColumn(doc.getLine(start.line), null, tabSize))
|
|
endLine = max;
|
|
else for (endLine = end.line + 1; endLine < max; ++endLine) {
|
|
var indent = CodeMirror.countColumn(doc.getLine(endLine), null, tabSize);
|
|
if (indent <= minIndent) break;
|
|
}
|
|
var from = Pos(minLine, 0);
|
|
|
|
return {type: "part",
|
|
name: data.name,
|
|
offsetLines: from.line,
|
|
text: doc.getRange(from, Pos(endLine, 0))};
|
|
}
|
|
|
|
// Generic utilities
|
|
|
|
var cmpPos = CodeMirror.cmpPos;
|
|
|
|
function elt(tagname, cls /*, ... elts*/) {
|
|
var e = document.createElement(tagname);
|
|
if (cls) e.className = cls;
|
|
for (var i = 2; i < arguments.length; ++i) {
|
|
var elt = arguments[i];
|
|
if (typeof elt == "string") elt = document.createTextNode(elt);
|
|
e.appendChild(elt);
|
|
}
|
|
return e;
|
|
}
|
|
|
|
function dialog(cm, text, f) {
|
|
if (cm.openDialog)
|
|
cm.openDialog(text + ": <input type=text>", f);
|
|
else
|
|
f(prompt(text, ""));
|
|
}
|
|
|
|
// Tooltips
|
|
|
|
function tempTooltip(cm, content) {
|
|
var where = cm.cursorCoords();
|
|
var tip = makeTooltip(where.right + 1, where.bottom, content);
|
|
function clear() {
|
|
if (!tip.parentNode) return;
|
|
cm.off("cursorActivity", clear);
|
|
fadeOut(tip);
|
|
}
|
|
setTimeout(clear, 1700);
|
|
cm.on("cursorActivity", clear);
|
|
}
|
|
|
|
function makeTooltip(x, y, content) {
|
|
var node = elt("div", cls + "tooltip", content);
|
|
node.style.left = x + "px";
|
|
node.style.top = y + "px";
|
|
document.body.appendChild(node);
|
|
return node;
|
|
}
|
|
|
|
function remove(node) {
|
|
var p = node && node.parentNode;
|
|
if (p) p.removeChild(node);
|
|
}
|
|
|
|
function fadeOut(tooltip) {
|
|
tooltip.style.opacity = "0";
|
|
setTimeout(function() { remove(tooltip); }, 1100);
|
|
}
|
|
|
|
function showError(ts, cm, msg) {
|
|
if (ts.options.showError)
|
|
ts.options.showError(cm, msg);
|
|
else
|
|
tempTooltip(cm, String(msg));
|
|
}
|
|
|
|
function closeArgHints(ts) {
|
|
if (ts.activeArgHints) { remove(ts.activeArgHints); ts.activeArgHints = null; }
|
|
}
|
|
|
|
function docValue(ts, doc) {
|
|
var val = doc.doc.getValue();
|
|
if (ts.options.fileFilter) val = ts.options.fileFilter(val, doc.name, doc.doc);
|
|
return val;
|
|
}
|
|
|
|
// Worker wrapper
|
|
|
|
function WorkerServer(ts) {
|
|
var worker = new Worker(ts.options.workerScript);
|
|
worker.postMessage({type: "init",
|
|
defs: ts.options.defs,
|
|
plugins: ts.options.plugins,
|
|
scripts: ts.options.workerDeps});
|
|
var msgId = 0, pending = {};
|
|
|
|
function send(data, c) {
|
|
if (c) {
|
|
data.id = ++msgId;
|
|
pending[msgId] = c;
|
|
}
|
|
worker.postMessage(data);
|
|
}
|
|
worker.onmessage = function(e) {
|
|
var data = e.data;
|
|
if (data.type == "getFile") {
|
|
getFile(ts, data.name, function(err, text) {
|
|
send({type: "getFile", err: String(err), text: text, id: data.id});
|
|
});
|
|
} else if (data.type == "debug") {
|
|
window.console.log(data.message);
|
|
} else if (data.id && pending[data.id]) {
|
|
pending[data.id](data.err, data.body);
|
|
delete pending[data.id];
|
|
}
|
|
};
|
|
worker.onerror = function(e) {
|
|
for (var id in pending) pending[id](e);
|
|
pending = {};
|
|
};
|
|
|
|
this.addFile = function(name, text) { send({type: "add", name: name, text: text}); };
|
|
this.delFile = function(name) { send({type: "del", name: name}); };
|
|
this.request = function(body, c) { send({type: "req", body: body}, c); };
|
|
}
|
|
});
|