initial commit (work in progress)

render/hyperscript.js

@@ -0,0 +1,75 @@
+"use strict"
+
+var normalizeChildren = require("../render/normalizeChildren")
+
+var selectorParser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[.+?\])/g, attrParser = /\[(.+?)(?:\s*=\s*("|'|)(.*?)\2)?\]/
+var selectorCache = {}
+function hyperscript(selector) {
+	if (selectorCache[selector] === undefined) {
+		var match, tag, id, classes = [], attributes = {}
+		while (match = selectorParser.exec(selector)) {
+			var type = match[1], value = match[2]
+			if (type === "" && value !== "") tag = value
+			else if (type === "#") attributes.id = value
+			else if (type === ".") classes.push(value)
+			else if (match[3][0] === "[") {
+				var pair = attrParser.exec(match[3])
+				attributes[pair[1]] = pair[3] || true
+			}
+		}
+		if (classes.length > 0) attributes.className = classes.join(" ")
+		selectorCache[selector] = function(attrs, children) {
+			var hasAttrs = false, childList, text
+			var className = attrs.className || attrs.class
+			for (var key in attributes) attrs[key] = attributes[key]
+			if (className !== undefined) {
+				if (attrs.class !== undefined) {
+					attrs.class = undefined
+					attrs.className = className
+				}
+				if (attributes.className !== undefined) attrs.className = attributes.className + " " + className
+			}
+			for (var key in attrs) {
+				if (key !== "key") {
+					hasAttrs = true
+					break
+				}
+			}
+			if (children instanceof Array && children.length == 1 && children[0] != null && children[0].tag === "#") text = children[0].children
+			else childList = children
+			return namespace({tag: tag || "div", key: attrs.key, attrs: hasAttrs ? attrs : undefined, children: childList, text: text})
+		}
+	}
+	var attrs, children, childrenIndex
+	if (arguments[1] == null || typeof arguments[1] === "object" && arguments[1].tag === undefined && !(arguments[1] instanceof Array)) {
+		attrs = arguments[1]
+		childrenIndex = 2
+	}
+	else childrenIndex = 1
+	if (arguments.length === childrenIndex + 1) {
+		children = arguments[childrenIndex] instanceof Array ? arguments[childrenIndex] : [arguments[childrenIndex]]
+	}
+	else {
+		children = []
+		for (var i = childrenIndex; i < arguments.length; i++) children.push(arguments[i])
+	}
+	
+	return selectorCache[selector](attrs || {}, normalizeChildren(children))
+}
+
+function namespace(vnode) {
+	switch (vnode.tag) {
+		case "svg": changeNS("http://www.w3.org/2000/svg", vnode); break
+		case "math": changeNS("http://www.w3.org/1998/Math/MathML", vnode); break
+	}
+	return vnode
+}
+
+function changeNS(ns, vnode) {
+	vnode.ns = ns
+	if (vnode.children != null) {
+		for (var i = 0; i < vnode.children.length; i++) changeNS(ns, vnode.children[i])
+	}
+}
+
+module.exports = hyperscript