669 lines
23 KiB
JavaScript
Executable File
669 lines
23 KiB
JavaScript
Executable File
// 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;
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for (var i = 0; i < data.refs.length; i++) {
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var ref = data.refs[i];
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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); };
|
|
}
|
|
});
|