mirror of
https://github.com/gryf/pentadactyl-pm.git
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1408 lines
51 KiB
JavaScript
1408 lines
51 KiB
JavaScript
// Copyright (c) 2006-2009 by Martin Stubenschrott <stubenschrott@vimperator.org>
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// Copyright (c) 2008-2009 by Kris Maglione <maglione.k at Gmail>
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//
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// This work is licensed for reuse under an MIT license. Details are
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// given in the LICENSE.txt file included with this file.
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/** @scope modules */
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/**
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* Creates a new completion context.
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*
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* @class A class to provide contexts for command completion.
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* Manages the filtering and formatting of completions, and keeps
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* track of the positions and quoting of replacement text. Allows for
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* the creation of sub-contexts with different headers and quoting
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* rules.
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*
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* @param {nsIEditor} editor The editor for which completion is
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* intended. May be a {CompletionContext} when forking a context,
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* or a {string} when creating a new one.
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* @param {string} name The name of this context. Used when the
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* context is forked.
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* @param {number} offset The offset from the parent context.
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* @author Kris Maglione <maglione.k@gmail.com>
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* @constructor
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*/
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function CompletionContext(editor, name, offset) //{{{
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{
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if (!(this instanceof arguments.callee))
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return new arguments.callee(editor, name, offset);
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if (!name)
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name = "";
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let self = this;
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if (editor instanceof arguments.callee)
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{
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let parent = editor;
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name = parent.name + "/" + name;
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this.contexts = parent.contexts;
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if (name in this.contexts)
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self = this.contexts[name];
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else
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self.contexts[name] = this;
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/**
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* @property {CompletionContext} This context's parent. {null} when
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* this is a top-level context.
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*/
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self.parent = parent;
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["filters", "keys", "title", "quote"].forEach(function (key)
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self[key] = parent[key] && util.cloneObject(parent[key]));
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["anchored", "compare", "editor", "_filter", "filterFunc", "keys", "_process", "top"].forEach(function (key)
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self[key] = parent[key]);
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self.__defineGetter__("value", function () this.top.value);
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self.offset = parent.offset;
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self.advance(offset);
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/**
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* @property {boolean} Specifies that this context is not finished
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* generating results.
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* @default false
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*/
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self.incomplete = false;
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self.message = null;
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/**
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* @property {boolean} Specifies that this context is waiting for the
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* user to press <Tab>. Useful when fetching completions could be
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* dangerous or slow, and the user has enabled autocomplete.
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*/
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self.waitingForTab = false;
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delete self._generate;
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delete self._ignoreCase;
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if (self != this)
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return self;
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["_caret", "contextList", "maxItems", "onUpdate", "selectionTypes", "tabPressed", "updateAsync", "value"].forEach(function (key) {
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self.__defineGetter__(key, function () this.top[key]);
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self.__defineSetter__(key, function (val) this.top[key] = val);
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});
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}
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else
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{
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if (typeof editor == "string")
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this._value = editor;
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else
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this.editor = editor;
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this.compare = function (a, b) String.localeCompare(a.text, b.text);
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/**
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* @property {function} This function is called when we close
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* a completion window with Esc or Ctrl-c. Usually this callback
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* is only needed for long, asynchronous completions
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*/
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this.cancel = null;
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/**
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* @property {function} The function used to filter the results.
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* @default Selects all results which match every predicate in the
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* {@link #filters} array.
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*/
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this.filterFunc = function (items)
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{
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let self = this;
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return this.filters.
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reduce(function (res, filter) res.filter(function (item) filter.call(self, item)),
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items);
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};
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/**
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* @property {Array} An array of predicates on which to filter the
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* results.
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*/
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this.filters = [CompletionContext.Filter.text];
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/**
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* @property {boolean} Specifies whether this context results must
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* match the filter at the beginning of the string.
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* @default true
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*/
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this.anchored = true;
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/**
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* @property {Object} A map of all contexts, keyed on their names.
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* Names are assigned when a context is forked, with its specified
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* name appended, after a '/', to its parent's name. May
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* contain inactive contexts. For active contexts, see
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* {@link #contextList}.
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*/
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this.contexts = { "": this };
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/**
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* @property {Object} A mapping of keys, for {@link #getKey}. Given
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* { key: value }, getKey(item, key) will return values as such:
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* if value is a string, it will return item.item[value]. If it's a
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* function, it will return value(item.item).
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*/
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this.keys = { text: 0, description: 1, icon: "icon" };
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/**
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* @property {number} This context's offset from the beginning of
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* {@link #editor}'s value.
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*/
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this.offset = offset || 0;
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/**
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* @property {function} A function which is called when any subcontext
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* changes its completion list. Only called when
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* {@link #updateAsync} is true.
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*/
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this.onUpdate = function () true;
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/**
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* @property {CompletionContext} The top-level completion context.
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*/
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this.top = this;
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this.__defineGetter__("incomplete", function () this.contextList.some(function (c) c.parent && c.incomplete));
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this.__defineGetter__("waitingForTab", function () this.contextList.some(function (c) c.parent && c.waitingForTab));
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this.reset();
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}
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/**
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* @property {Object} A general-purpose store for functions which need to
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* cache data between calls.
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*/
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this.cache = {};
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/**
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* @private
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* @property {Object} A cache for return values of {@link #generate}.
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*/
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this.itemCache = {};
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/**
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* @property {string} A key detailing when the cached value of
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* {@link #generate} may be used. Every call to
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* {@link #generate} stores its result in {@link #itemCache}.
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* When itemCache[key] exists, its value is returned, and
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* {@link #generate} is not called again.
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*/
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this.key = "";
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/**
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* @property {string} A message to be shown before any results.
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*/
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this.message = null;
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this.name = name || "";
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/** @private */
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this._completions = []; // FIXME
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/**
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* Returns a key, as detailed in {@link #keys}.
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* @function
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*/
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this.getKey = function (item, key) (typeof self.keys[key] == "function") ? self.keys[key].call(this, item.item) :
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key in self.keys ? item.item[self.keys[key]]
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: item.item[key];
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return this;
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}
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CompletionContext.Sort = {
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number: function (a, b) parseInt(b) - parseInt(a) || String.localeCompare(a, b),
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unsorted: null
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};
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CompletionContext.Filter = {
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text: function (item) {
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let text = Array.concat(item.text);
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for (let [i, str] in Iterator(text))
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{
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if (this.match(String(str)))
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{
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item.text = String(text[i]);
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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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textDescription: function (item) {
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return CompletionContext.Filter.text.call(this, item) || this.match(item.description);
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}
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};
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CompletionContext.prototype = {
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// Temporary
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/**
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* @property {Object}
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*
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* An object describing the results from all sub-contexts. Results are
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* adjusted so that all have the same starting offset.
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*
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* @deprecated
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*/
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get allItems()
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{
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try
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{
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let self = this;
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let minStart = Math.min.apply(Math, [context.offset for ([k, context] in Iterator(this.contexts)) if (context.items.length && context.hasItems)]);
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if (minStart == Infinity)
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minStart = 0;
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let items = this.contextList.map(function (context) {
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if (!context.hasItems)
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return [];
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let prefix = self.value.substring(minStart, context.offset);
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return context.items.map(function (item) ({
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text: prefix + item.text,
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__proto__: item
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}));
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});
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return { start: minStart, items: util.Array.flatten(items), longestSubstring: this.longestAllSubstring };
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}
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catch (e)
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{
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liberator.reportError(e);
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return { start: 0, items: [], longestAllSubstring: "" };
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}
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},
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// Temporary
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get allSubstrings()
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{
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let contexts = this.contextList.filter(function (c) c.hasItems && c.items.length);
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let minStart = Math.min.apply(Math, contexts.map(function (c) c.offset));
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let lists = contexts.map(function (context) {
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let prefix = context.value.substring(minStart, context.offset);
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return context.substrings.map(function (s) prefix + s);
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});
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let substrings = lists.reduce(
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function (res, list) res.filter(function (str) list.some(function (s) s.substr(0, str.length) == str)),
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lists.pop());
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if (!substrings) // FIXME: How is this undefined?
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return [];
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return util.Array.uniq(substrings);
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},
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// Temporary
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get longestAllSubstring()
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{
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return this.allSubstrings.reduce(function (a, b) a.length > b.length ? a : b, "");
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},
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get caret() this._caret - this.offset,
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set caret(val) this._caret = val + this.offset,
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get compare() this._compare || function () 0,
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set compare(val) this._compare = val,
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get completions() this._completions || [],
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set completions(items)
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{
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// Accept a generator
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if ({}.toString.call(items) != '[object Array]')
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items = [x for (x in Iterator(items))];
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delete this.cache.filtered;
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delete this.cache.filter;
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this.cache.rows = [];
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this.hasItems = items.length > 0;
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this._completions = items;
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let self = this;
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if (this.updateAsync && !this.noUpdate)
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liberator.callInMainThread(function () { self.onUpdate.call(self); });
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},
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get createRow() this._createRow || template.completionRow, // XXX
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set createRow(createRow) this._createRow = createRow,
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get filterFunc() this._filterFunc || util.identity,
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set filterFunc(val) this._filterFunc = val,
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get filter() this._filter != null ? this._filter : this.value.substr(this.offset, this.caret),
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set filter(val)
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{
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delete this._ignoreCase;
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return this._filter = val;
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},
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get format() ({
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anchored: this.anchored,
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title: this.title,
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keys: this.keys,
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process: this.process
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}),
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set format(format)
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{
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this.anchored = format.anchored,
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this.title = format.title || this.title;
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this.keys = format.keys || this.keys;
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this.process = format.process || this.process;
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},
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get message() this._message || (this.waitingForTab ? "Waiting for <Tab>" : null),
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set message(val) this._message = val,
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get proto()
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{
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let res = {};
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for (let i in Iterator(this.keys))
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{
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let [k, v] = i;
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let _k = "_" + k;
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if (typeof v == "string" && /^[.[]/.test(v))
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v = eval("(function (i) i" + v + ")");
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if (typeof v == "function")
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res.__defineGetter__(k, function () _k in this ? this[_k] : (this[_k] = v(this.item)));
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else
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res.__defineGetter__(k, function () _k in this ? this[_k] : (this[_k] = this.item[v]));
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res.__defineSetter__(k, function (val) this[_k] = val);
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}
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return res;
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},
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get regenerate() this._generate && (!this.completions || !this.itemCache[this.key] || this.cache.offset != this.offset),
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set regenerate(val) { if (val) delete this.itemCache[this.key]; },
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get generate() !this._generate ? null : function ()
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{
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if (this.offset != this.cache.offset)
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this.itemCache = {};
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this.cache.offset = this.offset;
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if (!this.itemCache[this.key])
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this.itemCache[this.key] = this._generate.call(this) || [];
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return this.itemCache[this.key];
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},
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set generate(arg)
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{
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this.hasItems = true;
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this._generate = arg;
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if (this.background && this.regenerate)
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{
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let lock = {};
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this.cache.backgroundLock = lock;
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this.incomplete = true;
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let thread = this.getCache("backgroundThread", liberator.newThread);
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liberator.callAsync(thread, this, function () {
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if (this.cache.backgroundLock != lock)
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return;
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let items = this.generate();
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if (this.cache.backgroundLock != lock)
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return;
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this.incomplete = false;
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this.completions = items;
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});
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}
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},
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get ignoreCase()
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{
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if ("_ignoreCase" in this)
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return this._ignoreCase;
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let mode = options["wildcase"];
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if (mode == "match")
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return this._ignoreCase = false;
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if (mode == "ignore")
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return this._ignoreCase = true;
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return this._ignoreCase = !/[A-Z]/.test(this.filter);
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},
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set ignoreCase(val) this._ignoreCase = val,
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get items()
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{
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if (!this.hasItems || this.backgroundLock)
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return [];
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if (this.cache.filtered && this.cache.filter == this.filter)
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return this.cache.filtered;
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this.cache.rows = [];
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let items = this.completions;
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if (this.generate && !this.background)
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{
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// XXX
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this.noUpdate = true;
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this.completions = items = this.generate();
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this.noUpdate = false;
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}
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this.cache.filter = this.filter;
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if (items == null)
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return items;
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let self = this;
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delete this._substrings;
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let proto = this.proto;
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let filtered = this.filterFunc(items.map(function (item) ({ __proto__: proto, item: item })));
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if (this.maxItems)
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filtered = filtered.slice(0, this.maxItems);
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if (options.get("wildoptions").has("sort") && this.compare)
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filtered.sort(this.compare);
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let quote = this.quote;
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if (quote)
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filtered.forEach(function (item) {
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item.unquoted = item.text;
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item.text = quote[0] + quote[1](item.text) + quote[2];
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});
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return this.cache.filtered = filtered;
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},
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get process() // FIXME
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{
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let self = this;
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let process = this._process;
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process = [process[0] || template.icon, process[1] || function (item, k) k];
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let first = process[0];
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let filter = this.filter;
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if (!this.anchored)
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process[0] = function (item, text) first.call(self, item, template.highlightFilter(item.text, filter));
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return process;
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},
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set process(process)
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{
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this._process = process;
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},
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get substrings()
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{
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let items = this.items;
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if (items.length == 0 || !this.hasItems)
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return [];
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if (this._substrings)
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return this._substrings;
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let fixCase = this.ignoreCase ? String.toLowerCase : util.identity;
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let text = fixCase(items[0].unquoted || items[0].text);
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let filter = fixCase(this.filter);
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if (this.anchored)
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{
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var compare = function compare(text, s) text.substr(0, s.length) == s;
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substrings = util.map(util.range(filter.length, text.length + 1),
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function (end) text.substring(0, end));
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}
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else
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{
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var compare = function compare(text, s) text.indexOf(s) >= 0;
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substrings = [];
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let start = 0;
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let idx;
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let length = filter.length;
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while ((idx = text.indexOf(filter, start)) > -1 && idx < text.length)
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{
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for (let end in util.range(idx + length, text.length + 1))
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substrings.push(text.substring(idx, end));
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start = idx + 1;
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}
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}
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substrings = items.reduce(
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function (res, item) res.filter(function (str) compare(fixCase(item.unquoted || item.text), str)),
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substrings);
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let quote = this.quote;
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if (quote)
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substrings = substrings.map(function (str) quote[0] + quote[1](str));
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return this._substrings = substrings;
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},
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|
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/**
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* Advances the context <b>count</b> characters. {@link #filter} is
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* advanced to match. If {@link #quote} is non-null, its prefix and suffix
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* are set to the null-string.
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*
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|
* This function is still imperfect for quoted strings. When
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* {@link #quote} is non-null, it adjusts the count based on the quoted
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* size of the <b>count</b>-character substring of the filter, which is
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* accurate so long as unquoting and quoting a string will always map to
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* the original quoted string, which is often not the case.
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*
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* @param {number} count The number of characters to advance the context.
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*/
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advance: function advance(count)
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{
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delete this._ignoreCase;
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if (this.quote)
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{
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count = this.quote[0].length + this.quote[1](this.filter.substr(0, count)).length;
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this.quote[0] = "";
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this.quote[2] = "";
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}
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this.offset += count;
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if (this._filter)
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this._filter = this._filter.substr(count);
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},
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cancelAll: function ()
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{
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|
for (let [, context] in Iterator(this.contextList))
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|
{
|
|
if (context.cancel)
|
|
context.cancel();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Gets a key from {@link #cache}, setting it to <b>defVal</b> if it
|
|
* doesn't already exists.
|
|
*
|
|
* @param {string} key
|
|
* @param defVal
|
|
*/
|
|
getCache: function (key, defVal)
|
|
{
|
|
if (!(key in this.cache))
|
|
this.cache[key] = defVal();
|
|
return this.cache[key];
|
|
},
|
|
|
|
getItems: function getItems(start, end)
|
|
{
|
|
let self = this;
|
|
let items = this.items;
|
|
let step = start > end ? -1 : 1;
|
|
start = Math.max(0, start || 0);
|
|
end = Math.min(items.length, end ? end : items.length);
|
|
return util.map(util.range(start, end, step), function (i) items[i]);
|
|
},
|
|
|
|
getRows: function getRows(start, end, doc)
|
|
{
|
|
let self = this;
|
|
let items = this.items;
|
|
let cache = this.cache.rows;
|
|
let step = start > end ? -1 : 1;
|
|
start = Math.max(0, start || 0);
|
|
end = Math.min(items.length, end != null ? end : items.length);
|
|
for (let i in util.range(start, end, step))
|
|
yield [i, cache[i] = cache[i] || util.xmlToDom(self.createRow(items[i]), doc)];
|
|
},
|
|
|
|
fork: function fork(name, offset, self, completer)
|
|
{
|
|
if (typeof completer == "string")
|
|
completer = self[completer];
|
|
let context = new CompletionContext(this, name, offset);
|
|
this.contextList.push(context);
|
|
if (completer)
|
|
return completer.apply(self || this, [context].concat(Array.slice(arguments, arguments.callee.length)));
|
|
return context;
|
|
},
|
|
|
|
getText: function getText(item)
|
|
{
|
|
let text = item[self.keys["text"]];
|
|
if (self.quote)
|
|
return self.quote(text);
|
|
return text;
|
|
},
|
|
|
|
highlight: function highlight(start, length, type)
|
|
{
|
|
try // Gecko < 1.9.1 doesn't have repaintSelection
|
|
{
|
|
this.selectionTypes[type] = null;
|
|
const selType = Ci.nsISelectionController["SELECTION_" + type];
|
|
const editor = this.editor;
|
|
let sel = editor.selectionController.getSelection(selType);
|
|
if (length == 0)
|
|
sel.removeAllRanges();
|
|
else
|
|
{
|
|
let range = editor.selection.getRangeAt(0).cloneRange();
|
|
range.setStart(range.startContainer, this.offset + start);
|
|
range.setEnd(range.startContainer, this.offset + start + length);
|
|
sel.addRange(range);
|
|
}
|
|
editor.selectionController.repaintSelection(selType);
|
|
}
|
|
catch (e) {}
|
|
},
|
|
|
|
// FIXME
|
|
_match: function _match(filter, str)
|
|
{
|
|
if (this.ignoreCase)
|
|
{
|
|
filter = filter.toLowerCase();
|
|
str = str.toLowerCase();
|
|
}
|
|
if (this.anchored)
|
|
return str.substr(0, filter.length) == filter;
|
|
return str.indexOf(filter) > -1;
|
|
},
|
|
|
|
match: function match(str)
|
|
{
|
|
return this._match(this.filter, str);
|
|
},
|
|
|
|
reset: function reset()
|
|
{
|
|
let self = this;
|
|
if (this.parent)
|
|
throw Error();
|
|
// Not ideal.
|
|
for (let type in this.selectionTypes)
|
|
this.highlight(0, 0, type);
|
|
|
|
/**
|
|
* @property {[CompletionContext]} A list of active
|
|
* completion contexts, in the order in which they were
|
|
* instantiated.
|
|
*/
|
|
this.contextList = [];
|
|
this.offset = 0;
|
|
this.process = [];
|
|
this.selectionTypes = {};
|
|
this.tabPressed = false;
|
|
this.title = ["Completions"];
|
|
this.updateAsync = false;
|
|
try
|
|
{
|
|
this.waitingForTab = false;
|
|
}
|
|
catch (e) {}
|
|
|
|
this.cancelAll();
|
|
|
|
if (this.editor)
|
|
{
|
|
this.value = this.editor.selection.focusNode.textContent;
|
|
this._caret = this.editor.selection.focusOffset;
|
|
}
|
|
else
|
|
{
|
|
this.value = this._value;
|
|
this._caret = this.value.length;
|
|
}
|
|
//for (let key in (k for ([k, v] in Iterator(self.contexts)) if (v.offset > this.caret)))
|
|
// delete this.contexts[key];
|
|
for each (let context in this.contexts)
|
|
{
|
|
context.hasItems = false;
|
|
try
|
|
{
|
|
context.incomplete = false;
|
|
}
|
|
catch (e) {}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Wait for all subcontexts to complete.
|
|
*
|
|
* @param {boolean} interruptible When true, the call may be interrupted
|
|
* via <C-c>, in which case, "Interrupted" may be thrown.
|
|
* @param {number} timeout The maximum time, in milliseconds, to wait.
|
|
* If 0 or null, wait indefinately.
|
|
*/
|
|
wait: function wait(interruptable, timeout)
|
|
{
|
|
let end = Date.now() + timeout;
|
|
while (this.incomplete && (!timeout || Date.now() > end))
|
|
liberator.threadYield(false, interruptable);
|
|
return this.incomplete;
|
|
}
|
|
}; //}}}
|
|
|
|
/**
|
|
* @instance completion
|
|
*/
|
|
function Completion() //{{{
|
|
{
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////// PRIVATE SECTION /////////////////////////////////////////
|
|
/////////////////////////////////////////////////////////////////////////////{{{
|
|
|
|
const EVAL_TMP = "__liberator_eval_tmp";
|
|
|
|
function Javascript()
|
|
{
|
|
const OFFSET = 0, CHAR = 1, STATEMENTS = 2, DOTS = 3, FULL_STATEMENTS = 4, COMMA = 5, FUNCTIONS = 6;
|
|
let stack = [];
|
|
let functions = [];
|
|
let top = []; // The element on the top of the stack.
|
|
let last = ""; // The last opening char pushed onto the stack.
|
|
let lastNonwhite = ""; // Last non-whitespace character we saw.
|
|
let lastChar = ""; // Last character we saw, used for \ escaping quotes.
|
|
let compl = [];
|
|
let str = "";
|
|
|
|
let lastIdx = 0;
|
|
|
|
let cacheKey = null;
|
|
|
|
this.completers = {};
|
|
|
|
// Some object members are only accessible as function calls
|
|
function getKey(obj, key)
|
|
{
|
|
try
|
|
{
|
|
return obj[key];
|
|
}
|
|
catch (e)
|
|
{
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
this.iter = function iter(obj)
|
|
{
|
|
let iterator = ([k, getKey(obj, k)] for (k in obj));
|
|
try
|
|
{
|
|
// The point of 'for k in obj' is to get keys
|
|
// that are accessible via . or [] notation.
|
|
// Iterators quite often return values of no
|
|
// use whatsoever for this purpose, so, we try
|
|
// this rather dirty hack of getting a standard
|
|
// object iterator for any object that defines its
|
|
// own.
|
|
if ("__iterator__" in obj)
|
|
{
|
|
let oldIter = obj.__iterator__;
|
|
delete obj.__iterator__;
|
|
iterator = Iterator(obj);
|
|
obj.__iterator__ = oldIter;
|
|
}
|
|
}
|
|
catch (e) {}
|
|
return iterator;
|
|
};
|
|
|
|
// Search the object for strings starting with @key.
|
|
// If @last is defined, key is a quoted string, it's
|
|
// wrapped in @last after @offset characters are sliced
|
|
// off of it and it's quoted.
|
|
this.objectKeys = function objectKeys(obj)
|
|
{
|
|
// Things we can dereference
|
|
if (["object", "string", "function"].indexOf(typeof obj) == -1)
|
|
return [];
|
|
if (!obj)
|
|
return [];
|
|
|
|
// XPCNativeWrappers, etc, don't show all accessible
|
|
// members until they're accessed, so, we look at
|
|
// the wrappedJSObject instead, and return any keys
|
|
// available in the object itself.
|
|
let orig = obj;
|
|
|
|
if (modules.isPrototypeOf(obj))
|
|
compl = [v for (v in Iterator(obj))];
|
|
else
|
|
{
|
|
if (getKey(obj, 'wrappedJSObject'))
|
|
obj = obj.wrappedJSObject;
|
|
// v[0] in orig and orig[v[0]] catch different cases. XPCOM
|
|
// objects are problematic, to say the least.
|
|
compl = [v for (v in this.iter(obj))
|
|
if ((typeof orig == "object" && v[0] in orig) || getKey(orig, v[0]) !== undefined)];
|
|
}
|
|
|
|
// And if wrappedJSObject happens to be available,
|
|
// return that, too.
|
|
if (getKey(orig, 'wrappedJSObject'))
|
|
compl.push(["wrappedJSObject", obj]);
|
|
|
|
// Add keys for sorting later.
|
|
// Numbers are parsed to ints.
|
|
// Constants, which should be unsorted, are found and marked null.
|
|
compl.forEach(function (item) {
|
|
let key = item[0];
|
|
if (!isNaN(key))
|
|
key = parseInt(key);
|
|
else if (/^[A-Z_][A-Z0-9_]*$/.test(key))
|
|
key = "";
|
|
item.key = key;
|
|
});
|
|
|
|
return compl;
|
|
};
|
|
|
|
this.eval = function eval(arg, key, tmp)
|
|
{
|
|
let cache = this.context.cache.eval;
|
|
let context = this.context.cache.evalContext;
|
|
|
|
if (!key)
|
|
key = arg;
|
|
if (key in cache)
|
|
return cache[key];
|
|
|
|
context[EVAL_TMP] = tmp;
|
|
try
|
|
{
|
|
return cache[key] = liberator.eval(arg, context);
|
|
}
|
|
catch (e)
|
|
{
|
|
return null;
|
|
}
|
|
finally
|
|
{
|
|
delete context[EVAL_TMP];
|
|
}
|
|
};
|
|
|
|
// Get an element from the stack. If @n is negative,
|
|
// count from the top of the stack, otherwise, the bottom.
|
|
// If @m is provided, return the @mth value of element @o
|
|
// of the stack entry at @n.
|
|
let get = function get(n, m, o)
|
|
{
|
|
let a = stack[n >= 0 ? n : stack.length + n];
|
|
if (o != null)
|
|
a = a[o];
|
|
if (m == null)
|
|
return a;
|
|
return a[a.length - m - 1];
|
|
};
|
|
|
|
function buildStack(filter)
|
|
{
|
|
let self = this;
|
|
// Push and pop the stack, maintaining references to 'top' and 'last'.
|
|
let push = function push(arg)
|
|
{
|
|
top = [i, arg, [i], [], [], [], []];
|
|
last = top[CHAR];
|
|
stack.push(top);
|
|
};
|
|
let pop = function pop(arg)
|
|
{
|
|
if (top[CHAR] != arg)
|
|
{
|
|
self.context.highlight(top[OFFSET], i - top[OFFSET], "SPELLCHECK");
|
|
self.context.highlight(top[OFFSET], 1, "FIND");
|
|
throw new Error("Invalid JS");
|
|
}
|
|
if (i == self.context.caret - 1)
|
|
self.context.highlight(top[OFFSET], 1, "FIND");
|
|
// The closing character of this stack frame will have pushed a new
|
|
// statement, leaving us with an empty statement. This doesn't matter,
|
|
// now, as we simply throw away the frame when we pop it, but it may later.
|
|
if (top[STATEMENTS][top[STATEMENTS].length - 1] == i)
|
|
top[STATEMENTS].pop();
|
|
top = get(-2);
|
|
last = top[CHAR];
|
|
let ret = stack.pop();
|
|
return ret;
|
|
};
|
|
|
|
let i = 0, c = ""; // Current index and character, respectively.
|
|
|
|
// Reuse the old stack.
|
|
if (str && filter.substr(0, str.length) == str)
|
|
{
|
|
i = str.length;
|
|
if (this.popStatement)
|
|
top[STATEMENTS].pop();
|
|
}
|
|
else
|
|
{
|
|
stack = [];
|
|
functions = [];
|
|
push("#root");
|
|
}
|
|
|
|
// Build a parse stack, discarding entries as opening characters
|
|
// match closing characters. The stack is walked from the top entry
|
|
// and down as many levels as it takes us to figure out what it is
|
|
// that we're completing.
|
|
str = filter;
|
|
let length = str.length;
|
|
for (; i < length; lastChar = c, i++)
|
|
{
|
|
c = str[i];
|
|
if (last == '"' || last == "'" || last == "/")
|
|
{
|
|
if (lastChar == "\\") // Escape. Skip the next char, whatever it may be.
|
|
{
|
|
c = "";
|
|
i++;
|
|
}
|
|
else if (c == last)
|
|
pop(c);
|
|
}
|
|
else
|
|
{
|
|
// A word character following a non-word character, or simply a non-word
|
|
// character. Start a new statement.
|
|
if (/[a-zA-Z_$]/.test(c) && !/[\w$]/.test(lastChar) || !/[\w\s$]/.test(c))
|
|
top[STATEMENTS].push(i);
|
|
|
|
// A "." or a "[" dereferences the last "statement" and effectively
|
|
// joins it to this logical statement.
|
|
if ((c == "." || c == "[") && /[\w$\])"']/.test(lastNonwhite)
|
|
|| lastNonwhite == "." && /[a-zA-Z_$]/.test(c))
|
|
top[STATEMENTS].pop();
|
|
|
|
switch (c)
|
|
{
|
|
case "(":
|
|
// Function call, or if/while/for/...
|
|
if (/[\w$]/.test(lastNonwhite))
|
|
{
|
|
functions.push(i);
|
|
top[FUNCTIONS].push(i);
|
|
top[STATEMENTS].pop();
|
|
}
|
|
case '"':
|
|
case "'":
|
|
case "/":
|
|
case "{":
|
|
push(c);
|
|
break;
|
|
case "[":
|
|
push(c);
|
|
break;
|
|
case ".":
|
|
top[DOTS].push(i);
|
|
break;
|
|
case ")": pop("("); break;
|
|
case "]": pop("["); break;
|
|
case "}": pop("{"); // Fallthrough
|
|
case ";":
|
|
top[FULL_STATEMENTS].push(i);
|
|
break;
|
|
case ",":
|
|
top[COMMA].push(i);
|
|
break;
|
|
}
|
|
|
|
if (/\S/.test(c))
|
|
lastNonwhite = c;
|
|
}
|
|
}
|
|
|
|
this.popStatement = false;
|
|
if (!/[\w$]/.test(lastChar) && lastNonwhite != ".")
|
|
{
|
|
this.popStatement = true;
|
|
top[STATEMENTS].push(i);
|
|
}
|
|
|
|
lastIdx = i;
|
|
}
|
|
|
|
this.complete = function _complete(context)
|
|
{
|
|
this.context = context;
|
|
|
|
let self = this;
|
|
try
|
|
{
|
|
buildStack.call(this, context.filter);
|
|
}
|
|
catch (e)
|
|
{
|
|
if (e.message != "Invalid JS")
|
|
liberator.reportError(e);
|
|
lastIdx = 0;
|
|
return;
|
|
}
|
|
|
|
let cache = this.context.cache;
|
|
this.context.getCache("eval", Object);
|
|
this.context.getCache("evalContext", function () ({ __proto__: userContext }));
|
|
|
|
// Okay, have parse stack. Figure out what we're completing.
|
|
|
|
// Find any complete statements that we can eval before we eval our object.
|
|
// This allows for things like: let doc = window.content.document; let elem = doc.createElement...; elem.<Tab>
|
|
let prev = 0;
|
|
for (let [, v] in Iterator(get(0)[FULL_STATEMENTS]))
|
|
{
|
|
let key = str.substring(prev, v + 1);
|
|
if (checkFunction(prev, v, key))
|
|
return;
|
|
this.eval(key);
|
|
prev = v + 1;
|
|
}
|
|
|
|
// Don't eval any function calls unless the user presses tab.
|
|
function checkFunction(start, end, key)
|
|
{
|
|
let res = functions.some(function (idx) idx >= start && idx < end);
|
|
if (!res || self.context.tabPressed || key in cache.eval)
|
|
return false;
|
|
self.context.waitingForTab = true;
|
|
return true;
|
|
}
|
|
|
|
// For each DOT in a statement, prefix it with TMP, eval it,
|
|
// and save the result back to TMP. The point of this is to
|
|
// cache the entire path through an object chain, mainly in
|
|
// the presence of function calls. There are drawbacks. For
|
|
// instance, if the value of a variable changes in the course
|
|
// of inputting a command (let foo=bar; frob(foo); foo=foo.bar; ...),
|
|
// we'll still use the old value. But, it's worth it.
|
|
function getObj(frame, stop)
|
|
{
|
|
let statement = get(frame, 0, STATEMENTS) || 0; // Current statement.
|
|
let prev = statement;
|
|
let obj;
|
|
let cacheKey;
|
|
for (let [i, dot] in Iterator(get(frame)[DOTS].concat(stop)))
|
|
{
|
|
if (dot < statement)
|
|
continue;
|
|
if (dot > stop || dot <= prev)
|
|
break;
|
|
let s = str.substring(prev, dot);
|
|
|
|
if (prev != statement)
|
|
s = EVAL_TMP + "." + s;
|
|
cacheKey = str.substring(statement, dot);
|
|
|
|
if (checkFunction(prev, dot, cacheKey))
|
|
return [];
|
|
|
|
prev = dot + 1;
|
|
obj = self.eval(s, cacheKey, obj);
|
|
}
|
|
return [[obj, cacheKey]];
|
|
}
|
|
|
|
function getObjKey(frame)
|
|
{
|
|
let dot = get(frame, 0, DOTS) || -1; // Last dot in frame.
|
|
let statement = get(frame, 0, STATEMENTS) || 0; // Current statement.
|
|
let end = (frame == -1 ? lastIdx : get(frame + 1)[OFFSET]);
|
|
|
|
cacheKey = null;
|
|
let obj = [[cache.evalContext, "Local Variables"], [userContext, "Global Variables"],
|
|
[modules, "modules"], [window, "window"]]; // Default objects;
|
|
// Is this an object dereference?
|
|
if (dot < statement) // No.
|
|
dot = statement - 1;
|
|
else // Yes. Set the object to the string before the dot.
|
|
obj = getObj(frame, dot);
|
|
|
|
let [, space, key] = str.substring(dot + 1, end).match(/^(\s*)(.*)/);
|
|
return [dot + 1 + space.length, obj, key];
|
|
}
|
|
|
|
function fill(context, obj, name, compl, anchored, key, last, offset)
|
|
{
|
|
context.title = [name];
|
|
context.anchored = anchored;
|
|
context.filter = key;
|
|
context.itemCache = context.parent.itemCache;
|
|
context.key = name;
|
|
|
|
if (last != null)
|
|
context.quote = [last, function (text) util.escapeString(text.substr(offset), ""), last];
|
|
else // We're not looking for a quoted string, so filter out anything that's not a valid identifier
|
|
context.filters.push(function (item) /^[a-zA-Z_$][\w$]*$/.test(item.text));
|
|
|
|
compl.call(self, context, obj);
|
|
}
|
|
|
|
function complete(objects, key, compl, string, last)
|
|
{
|
|
let orig = compl;
|
|
if (!compl)
|
|
{
|
|
compl = function (context, obj)
|
|
{
|
|
context.process = [null, function highlight(item, v) template.highlight(v, true)];
|
|
// Sort in a logical fashion for object keys:
|
|
// Numbers are sorted as numbers, rather than strings, and appear first.
|
|
// Constants are unsorted, and appear before other non-null strings.
|
|
// Other strings are sorted in the default manner.
|
|
let compare = context.compare;
|
|
function isnan(item) item != '' && isNaN(item);
|
|
context.compare = function (a, b)
|
|
{
|
|
if (!isnan(a.item.key) && !isnan(b.item.key))
|
|
return a.item.key - b.item.key;
|
|
return isnan(b.item.key) - isnan(a.item.key) || compare(a, b);
|
|
};
|
|
if (!context.anchored) // We've already listed anchored matches, so don't list them again here.
|
|
context.filters.push(function (item) util.compareIgnoreCase(item.text.substr(0, this.filter.length), this.filter));
|
|
if (obj == cache.evalContext)
|
|
context.regenerate = true;
|
|
context.generate = function () self.objectKeys(obj);
|
|
};
|
|
}
|
|
// TODO: Make this a generic completion helper function.
|
|
let filter = key + (string || "");
|
|
for (let [, obj] in Iterator(objects))
|
|
{
|
|
this.context.fork(obj[1], top[OFFSET], this, fill,
|
|
obj[0], obj[1], compl, compl != orig, filter, last, key.length);
|
|
}
|
|
if (orig)
|
|
return;
|
|
for (let [, obj] in Iterator(objects))
|
|
{
|
|
obj[1] += " (substrings)";
|
|
this.context.fork(obj[1], top[OFFSET], this, fill,
|
|
obj[0], obj[1], compl, false, filter, last, key.length);
|
|
}
|
|
}
|
|
|
|
// In a string. Check if we're dereferencing an object.
|
|
// Otherwise, do nothing.
|
|
if (last == "'" || last == '"')
|
|
{
|
|
//
|
|
// str = "foo[bar + 'baz"
|
|
// obj = "foo"
|
|
// key = "bar + ''"
|
|
//
|
|
|
|
// The top of the stack is the sting we're completing.
|
|
// Wrap it in its delimiters and eval it to process escape sequences.
|
|
let string = str.substring(get(-1)[OFFSET] + 1, lastIdx);
|
|
string = eval(last + string + last);
|
|
|
|
function getKey()
|
|
{
|
|
if (last == "")
|
|
return "";
|
|
// After the opening [ upto the opening ", plus '' to take care of any operators before it
|
|
let key = str.substring(get(-2, 0, STATEMENTS), get(-1, null, OFFSET)) + "''";
|
|
// Now eval the key, to process any referenced variables.
|
|
return this.eval(key);
|
|
}
|
|
|
|
// Is this an object accessor?
|
|
if (get(-2)[CHAR] == "[") // Are we inside of []?
|
|
{
|
|
// Stack:
|
|
// [-1]: "...
|
|
// [-2]: [...
|
|
// [-3]: base statement
|
|
|
|
// Yes. If the [ starts at the beginning of a logical
|
|
// statement, we're in an array literal, and we're done.
|
|
if (get(-3, 0, STATEMENTS) == get(-2)[OFFSET])
|
|
return null;
|
|
|
|
// Beginning of the statement upto the opening [
|
|
let obj = getObj(-3, get(-2)[OFFSET]);
|
|
|
|
return void complete.call(this, obj, getKey(), null, string, last);
|
|
}
|
|
|
|
// Is this a function call?
|
|
if (get(-2)[CHAR] == "(")
|
|
{
|
|
// Stack:
|
|
// [-1]: "...
|
|
// [-2]: (...
|
|
// [-3]: base statement
|
|
|
|
// Does the opening "(" mark a function call?
|
|
if (get(-3, 0, FUNCTIONS) != get(-2)[OFFSET])
|
|
return; // No. We're done.
|
|
|
|
let [offset, obj, func] = getObjKey(-3);
|
|
if (!obj.length)
|
|
return;
|
|
obj = obj.slice(0, 1);
|
|
|
|
try
|
|
{
|
|
var completer = obj[0][0][func].liberatorCompleter;
|
|
}
|
|
catch (e) {}
|
|
if (!completer)
|
|
completer = this.completers[func];
|
|
if (!completer)
|
|
return;
|
|
|
|
// Split up the arguments
|
|
let prev = get(-2)[OFFSET];
|
|
let args = [];
|
|
for (let [i, idx] in Iterator(get(-2)[COMMA]))
|
|
{
|
|
let arg = str.substring(prev + 1, idx);
|
|
prev = idx;
|
|
util.memoize(args, i, function () self.eval(arg));
|
|
}
|
|
let key = getKey();
|
|
args.push(key + string);
|
|
|
|
compl = function (context, obj)
|
|
{
|
|
let res = completer.call(self, context, func, obj, args);
|
|
if (res)
|
|
context.completions = res;
|
|
};
|
|
|
|
obj[0][1] += "." + func + "(... [" + args.length + "]";
|
|
return void complete.call(this, obj, key, compl, string, last);
|
|
}
|
|
|
|
// In a string that's not an obj key or a function arg.
|
|
// Nothing to do.
|
|
return;
|
|
}
|
|
|
|
//
|
|
// str = "foo.bar.baz"
|
|
// obj = "foo.bar"
|
|
// key = "baz"
|
|
//
|
|
// str = "foo"
|
|
// obj = [modules, window]
|
|
// key = "foo"
|
|
//
|
|
|
|
let [offset, obj, key] = getObjKey(-1);
|
|
|
|
// Wait for a keypress before completing the default objects.
|
|
if (!this.context.tabPressed && key == "" && obj.length > 1)
|
|
{
|
|
this.context.waitingForTab = true;
|
|
this.context.message = "Waiting for key press";
|
|
return;
|
|
}
|
|
|
|
if (!/^(?:[a-zA-Z_$][\w$]*)?$/.test(key))
|
|
return; // Not a word. Forget it. Can this even happen?
|
|
|
|
try
|
|
{ // FIXME
|
|
var o = top[OFFSET];
|
|
top[OFFSET] = offset;
|
|
return void complete.call(this, obj, key);
|
|
}
|
|
finally
|
|
{
|
|
top[OFFSET] = o;
|
|
}
|
|
}
|
|
};
|
|
let javascript = new Javascript();
|
|
|
|
/////////////////////////////////////////////////////////////////////////////}}}
|
|
////////////////////// PUBLIC SECTION //////////////////////////////////////////
|
|
/////////////////////////////////////////////////////////////////////////////{{{
|
|
|
|
const self = {
|
|
|
|
setFunctionCompleter: function setFunctionCompleter(funcs, completers)
|
|
{
|
|
funcs = Array.concat(funcs);
|
|
for (let [, func] in Iterator(funcs))
|
|
{
|
|
func.liberatorCompleter = function liberatorCompleter(context, func, obj, args) {
|
|
let completer = completers[args.length - 1];
|
|
if (!completer)
|
|
return [];
|
|
return completer.call(this, context, obj, args);
|
|
};
|
|
}
|
|
},
|
|
|
|
// FIXME
|
|
_runCompleter: function _runCompleter(name, filter, maxItems)
|
|
{
|
|
let context = CompletionContext(filter);
|
|
context.maxItems = maxItems;
|
|
let res = context.fork.apply(context, ["run", 0, this, name].concat(Array.slice(arguments, 3)));
|
|
if (res) // FIXME
|
|
return { items: res.map(function (i) ({ item: i })) };
|
|
context.wait(true);
|
|
return context.allItems;
|
|
},
|
|
|
|
runCompleter: function runCompleter(name, filter, maxItems)
|
|
{
|
|
return this._runCompleter.apply(this, Array.slice(arguments))
|
|
.items.map(function (i) i.item);
|
|
},
|
|
|
|
listCompleter: function listCompleter(name, filter, maxItems)
|
|
{
|
|
let context = CompletionContext(filter || "");
|
|
context.maxItems = maxItems;
|
|
context.fork.apply(context, ["list", 0, completion, name].concat(Array.slice(arguments, 3)));
|
|
context = context.contexts["/list"];
|
|
context.wait();
|
|
|
|
let list = template.commandOutput(
|
|
<div highlight="Completions">
|
|
{ template.completionRow(context.title, "CompTitle") }
|
|
{ template.map(context.items, function (item) context.createRow(item), null, 100) }
|
|
</div>);
|
|
commandline.echo(list, commandline.HL_NORMAL, commandline.FORCE_MULTILINE);
|
|
},
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////// COMPLETION TYPES ////////////////////////////////////////
|
|
/////////////////////////////////////////////////////////////////////////////{{{
|
|
|
|
get javascriptCompleter() javascript,
|
|
|
|
javascript: function _javascript(context) javascript.complete(context),
|
|
|
|
// filter a list of urls
|
|
//
|
|
// may consist of search engines, filenames, bookmarks and history,
|
|
// depending on the 'complete' option
|
|
// if the 'complete' argument is passed like "h", it temporarily overrides the complete option
|
|
url: function url(context, complete)
|
|
{
|
|
let numLocationCompletions = 0; // how many async completions did we already return to the caller?
|
|
let start = 0;
|
|
let skip = 0;
|
|
|
|
if (options["urlseparator"])
|
|
skip = context.filter.match("^.*" + options["urlseparator"]); // start after the last 'urlseparator'
|
|
|
|
if (skip)
|
|
context.advance(skip[0].length);
|
|
|
|
// Will, and should, throw an error if !(c in opts)
|
|
Array.forEach(complete || options["complete"], function (c) {
|
|
let completer = completion.urlCompleters[c];
|
|
context.fork.apply(context, [c, 0, completion, completer.completer].concat(completer.args));
|
|
});
|
|
},
|
|
|
|
urlCompleters: {},
|
|
|
|
addUrlCompleter: function addUrlCompleter(opt)
|
|
{
|
|
let completer = UrlCompleter.apply(null, Array.slice(arguments));
|
|
completer.args = Array.slice(arguments, completer.length);
|
|
this.urlCompleters[opt] = completer;
|
|
},
|
|
|
|
urls: function (context, tags)
|
|
{
|
|
let compare = String.localeCompare;
|
|
let contains = String.indexOf;
|
|
if (context.ignoreCase)
|
|
{
|
|
compare = util.compareIgnoreCase;
|
|
contains = function (a, b) a && a.toLowerCase().indexOf(b.toLowerCase()) > -1;
|
|
}
|
|
|
|
if (tags)
|
|
context.filters.push(function (item) tags.
|
|
every(function (tag) (item.tags || []).
|
|
some(function (t) !compare(tag, t))));
|
|
|
|
context.anchored = false;
|
|
if (!context.title)
|
|
context.title = ["URL", "Title"];
|
|
|
|
context.fork("additional", 0, this, function (context) {
|
|
context.title[0] += " (additional)";
|
|
context.filter = context.parent.filter; // FIXME
|
|
context.completions = context.parent.completions;
|
|
// For items whose URL doesn't exactly match the filter,
|
|
// accept them if all tokens match either the URL or the title.
|
|
// Filter out all directly matching strings.
|
|
let match = context.filters[0];
|
|
context.filters[0] = function (item) !match.call(this, item);
|
|
// and all that don't match the tokens.
|
|
let tokens = context.filter.split(/\s+/);
|
|
context.filters.push(function (item) tokens.every(
|
|
function (tok) contains(item.url, tok) ||
|
|
contains(item.title, tok)));
|
|
|
|
let re = RegExp(tokens.filter(util.identity).map(util.escapeRegex).join("|"), "g");
|
|
function highlight(item, text, i) process[i].call(this, item, template.highlightRegexp(text, re));
|
|
let process = [template.icon, function (item, k) k];
|
|
context.process = [
|
|
function (item, text) highlight.call(this, item, item.text, 0),
|
|
function (item, text) highlight.call(this, item, text, 1)
|
|
];
|
|
});
|
|
}
|
|
//}}}
|
|
};
|
|
|
|
const UrlCompleter = new Struct("name", "description", "completer");
|
|
|
|
return self;
|
|
//}}}
|
|
} //}}}
|
|
|
|
// vim: set fdm=marker sw=4 ts=4 et:
|