added basic stringifier

lacks several features, useful for debugging, though

Author: fb55

stringify.js

@@ -0,0 +1,55 @@
+var actionTypes = {
+	"equals": "",
+	"element": "~",
+	"start": "^",
+	"end": "$",
+	"any": "*",
+	"not": "!",
+	"hyphen": "|"
+};
+
+var simpleSelectors = {
+	__proto__: null,
+	child: " > ",
+	parent: " < ",
+	sibling: " ~ ",
+	adjacent: " + ",
+    descendant: " ",
+    universal: "*"
+};
+
+module.exports = stringify;
+
+function stringify(token){
+    return token.map(stringifySubselector).join(", ");
+}
+
+function stringifySubselector(token){
+    return token.map(stringifyToken).join("");
+}
+
+function stringifyToken(token){
+    if(token.type in simpleSelectors) return simpleSelectors[token.type];
+
+    if(token.type === "tag") return escapeName(token.name);
+
+    if(token.type === "attribute"){
+        if(token.action === "exists") return "[" + escapeName(token.name) + "]";
+        if(token.name === "id" && token.action === "equals" && !token.ignoreCase) return "#" + escapeName(token.value);
+        if(token.name === "class" && token.action === "element" && !token.ignoreCase) return "." + escapeName(token.value);
+        return "[" +
+            escapeName(token.name) + actionTypes[token.action] + "='" +
+            escapeName(token.value) + "'" + (token.ignoreCase ? "i" : "") + "]";
+    }
+
+    if(token.type === "pseudo"){
+        if(token.data === null) return ":" + escapeName(token.name);
+        if(typeof token.data === "string") return ":" + escapeName(token.name) + "(" + token.data + ")";
+        return ":" + escapeName(token.name) + "(" + stringify(token.data) + ")";
+    }
+}
+
+function escapeName(str){
+    //TODO
+    return str;
+}