From a8f7d57c3a5ade625673db1dffa1f36c4780fc01 Mon Sep 17 00:00:00 2001 From: Rich Harris Date: Sat, 30 Dec 2017 10:55:10 -0500 Subject: [PATCH] only optimise inside <:Head> --- src/generators/Generator.ts | 10 +- test/js/samples/svg-title/expected-bundle.js | 232 +++++++++++++++++++ test/js/samples/svg-title/expected.js | 43 ++++ test/js/samples/svg-title/input.html | 3 + 4 files changed, 287 insertions(+), 1 deletion(-) create mode 100644 test/js/samples/svg-title/expected-bundle.js create mode 100644 test/js/samples/svg-title/expected.js create mode 100644 test/js/samples/svg-title/input.html diff --git a/src/generators/Generator.ts b/src/generators/Generator.ts index 46a3e346b4..f0c36f8062 100644 --- a/src/generators/Generator.ts +++ b/src/generators/Generator.ts @@ -721,6 +721,14 @@ export default class Generator { let indexes = new Set(); const indexesStack: Set<string>[] = [indexes]; + function parentIsHead(node) { + if (!node) return false; + if (node.type === 'Component' || node.type === 'Element') return false; + if (node.type === 'Head') return true; + + return parentIsHead(node.parent); + } + walk(html, { enter(node: Node, parent: Node, key: string) { // TODO this is hacky as hell @@ -738,7 +746,7 @@ export default class Generator { } else if (node.name === ':Head') { // TODO do this in parse? node.type = 'Head'; Object.setPrototypeOf(node, nodes.Head.prototype); - } else if (node.type === 'Element' && node.name === 'title') { // TODO do this in parse? + } else if (node.type === 'Element' && node.name === 'title' && parentIsHead(parent)) { // TODO do this in parse? node.type = 'Title'; Object.setPrototypeOf(node, nodes.Title.prototype); } else if (node.type === 'Element' && node.name === 'slot' && !generator.customElement) { diff --git a/test/js/samples/svg-title/expected-bundle.js b/test/js/samples/svg-title/expected-bundle.js new file mode 100644 index 0000000000..7a56846bc1 --- /dev/null +++ b/test/js/samples/svg-title/expected-bundle.js @@ -0,0 +1,232 @@ +function noop() {} + +function assign(target) { + var k, + source, + i = 1, + len = arguments.length; + for (; i < len; i++) { + source = arguments[i]; + for (k in source) target[k] = source[k]; + } + + return target; +} + +function appendNode(node, target) { + target.appendChild(node); +} + +function insertNode(node, target, anchor) { + target.insertBefore(node, anchor); +} + +function detachNode(node) { + node.parentNode.removeChild(node); +} + +function createSvgElement(name) { + return document.createElementNS('http://www.w3.org/2000/svg', name); +} + +function createText(data) { + return document.createTextNode(data); +} + +function blankObject() { + return Object.create(null); +} + +function destroy(detach) { + this.destroy = noop; + this.fire('destroy'); + this.set = this.get = noop; + + if (detach !== false) this._fragment.u(); + this._fragment.d(); + this._fragment = this._state = null; +} + +function differs(a, b) { + return a !== b || ((a && typeof a === 'object') || typeof a === 'function'); +} + +function dispatchObservers(component, group, changed, newState, oldState) { + for (var key in group) { + if (!changed[key]) continue; + + var newValue = newState[key]; + var oldValue = oldState[key]; + + var callbacks = group[key]; + if (!callbacks) continue; + + for (var i = 0; i < callbacks.length; i += 1) { + var callback = callbacks[i]; + if (callback.__calling) continue; + + callback.__calling = true; + callback.call(component, newValue, oldValue); + callback.__calling = false; + } + } +} + +function fire(eventName, data) { + var handlers = + eventName in this._handlers && this._handlers[eventName].slice(); + if (!handlers) return; + + for (var i = 0; i < handlers.length; i += 1) { + handlers[i].call(this, data); + } +} + +function get(key) { + return key ? this._state[key] : this._state; +} + +function init(component, options) { + component._observers = { pre: blankObject(), post: blankObject() }; + component._handlers = blankObject(); + component._bind = options._bind; + + component.options = options; + component.root = options.root || component; + component.store = component.root.store || options.store; +} + +function observe(key, callback, options) { + var group = options && options.defer + ? this._observers.post + : this._observers.pre; + + (group[key] || (group[key] = [])).push(callback); + + if (!options || options.init !== false) { + callback.__calling = true; + callback.call(this, this._state[key]); + callback.__calling = false; + } + + return { + cancel: function() { + var index = group[key].indexOf(callback); + if (~index) group[key].splice(index, 1); + } + }; +} + +function on(eventName, handler) { + if (eventName === 'teardown') return this.on('destroy', handler); + + var handlers = this._handlers[eventName] || (this._handlers[eventName] = []); + handlers.push(handler); + + return { + cancel: function() { + var index = handlers.indexOf(handler); + if (~index) handlers.splice(index, 1); + } + }; +} + +function set(newState) { + this._set(assign({}, newState)); + if (this.root._lock) return; + this.root._lock = true; + callAll(this.root._beforecreate); + callAll(this.root._oncreate); + callAll(this.root._aftercreate); + this.root._lock = false; +} + +function _set(newState) { + var oldState = this._state, + changed = {}, + dirty = false; + + for (var key in newState) { + if (differs(newState[key], oldState[key])) changed[key] = dirty = true; + } + if (!dirty) return; + + this._state = assign({}, oldState, newState); + this._recompute(changed, this._state); + if (this._bind) this._bind(changed, this._state); + + if (this._fragment) { + dispatchObservers(this, this._observers.pre, changed, this._state, oldState); + this._fragment.p(changed, this._state); + dispatchObservers(this, this._observers.post, changed, this._state, oldState); + } +} + +function callAll(fns) { + while (fns && fns.length) fns.pop()(); +} + +function _mount(target, anchor) { + this._fragment.m(target, anchor); +} + +function _unmount() { + if (this._fragment) this._fragment.u(); +} + +var proto = { + destroy: destroy, + get: get, + fire: fire, + observe: observe, + on: on, + set: set, + teardown: destroy, + _recompute: noop, + _set: _set, + _mount: _mount, + _unmount: _unmount +}; + +/* generated by Svelte vX.Y.Z */ +function create_main_fragment(state, component) { + var svg, title, text; + + return { + c: function create() { + svg = createSvgElement("svg"); + title = createSvgElement("title"); + text = createText("a title"); + }, + + m: function mount(target, anchor) { + insertNode(svg, target, anchor); + appendNode(title, svg); + appendNode(text, title); + }, + + p: noop, + + u: function unmount() { + detachNode(svg); + }, + + d: noop + }; +} + +function SvelteComponent(options) { + init(this, options); + this._state = assign({}, options.data); + + this._fragment = create_main_fragment(this._state, this); + + if (options.target) { + this._fragment.c(); + this._fragment.m(options.target, options.anchor || null); + } +} + +assign(SvelteComponent.prototype, proto); + +export default SvelteComponent; diff --git a/test/js/samples/svg-title/expected.js b/test/js/samples/svg-title/expected.js new file mode 100644 index 0000000000..39ccf227c0 --- /dev/null +++ b/test/js/samples/svg-title/expected.js @@ -0,0 +1,43 @@ +/* generated by Svelte vX.Y.Z */ +import { appendNode, assign, createSvgElement, createText, detachNode, init, insertNode, noop, proto } from "svelte/shared.js"; + +function create_main_fragment(state, component) { + var svg, title, text; + + return { + c: function create() { + svg = createSvgElement("svg"); + title = createSvgElement("title"); + text = createText("a title"); + }, + + m: function mount(target, anchor) { + insertNode(svg, target, anchor); + appendNode(title, svg); + appendNode(text, title); + }, + + p: noop, + + u: function unmount() { + detachNode(svg); + }, + + d: noop + }; +} + +function SvelteComponent(options) { + init(this, options); + this._state = assign({}, options.data); + + this._fragment = create_main_fragment(this._state, this); + + if (options.target) { + this._fragment.c(); + this._fragment.m(options.target, options.anchor || null); + } +} + +assign(SvelteComponent.prototype, proto); +export default SvelteComponent; \ No newline at end of file diff --git a/test/js/samples/svg-title/input.html b/test/js/samples/svg-title/input.html new file mode 100644 index 0000000000..7ec3f98b64 --- /dev/null +++ b/test/js/samples/svg-title/input.html @@ -0,0 +1,3 @@ +<svg> + <title>a title + \ No newline at end of file