Demo for query storing
Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/css-select/lib/compile.js b/node_modules/css-select/lib/compile.js
new file mode 100644
index 0000000..86d2d13
--- /dev/null
+++ b/node_modules/css-select/lib/compile.js
@@ -0,0 +1,219 @@
+/*
+ compiles a selector to an executable function
+*/
+
+module.exports = compile;
+
+var parse = require("css-what").parse;
+var BaseFuncs = require("boolbase");
+var sortRules = require("./sort.js");
+var procedure = require("./procedure.json");
+var Rules = require("./general.js");
+var Pseudos = require("./pseudos.js");
+var trueFunc = BaseFuncs.trueFunc;
+var falseFunc = BaseFuncs.falseFunc;
+
+var filters = Pseudos.filters;
+
+function compile(selector, options, context) {
+ var next = compileUnsafe(selector, options, context);
+ return wrap(next, options);
+}
+
+function wrap(next, options) {
+ var adapter = options.adapter;
+
+ return function base(elem) {
+ return adapter.isTag(elem) && next(elem);
+ };
+}
+
+function compileUnsafe(selector, options, context) {
+ var token = parse(selector, options);
+ return compileToken(token, options, context);
+}
+
+function includesScopePseudo(t) {
+ return (
+ t.type === "pseudo" &&
+ (t.name === "scope" ||
+ (Array.isArray(t.data) &&
+ t.data.some(function(data) {
+ return data.some(includesScopePseudo);
+ })))
+ );
+}
+
+var DESCENDANT_TOKEN = { type: "descendant" };
+var FLEXIBLE_DESCENDANT_TOKEN = { type: "_flexibleDescendant" };
+var SCOPE_TOKEN = { type: "pseudo", name: "scope" };
+var PLACEHOLDER_ELEMENT = {};
+
+//CSS 4 Spec (Draft): 3.3.1. Absolutizing a Scope-relative Selector
+//http://www.w3.org/TR/selectors4/#absolutizing
+function absolutize(token, options, context) {
+ var adapter = options.adapter;
+
+ //TODO better check if context is document
+ var hasContext =
+ !!context &&
+ !!context.length &&
+ context.every(function(e) {
+ return e === PLACEHOLDER_ELEMENT || !!adapter.getParent(e);
+ });
+
+ token.forEach(function(t) {
+ if (t.length > 0 && isTraversal(t[0]) && t[0].type !== "descendant") {
+ //don't return in else branch
+ } else if (hasContext && !(Array.isArray(t) ? t.some(includesScopePseudo) : includesScopePseudo(t))) {
+ t.unshift(DESCENDANT_TOKEN);
+ } else {
+ return;
+ }
+
+ t.unshift(SCOPE_TOKEN);
+ });
+}
+
+function compileToken(token, options, context) {
+ token = token.filter(function(t) {
+ return t.length > 0;
+ });
+
+ token.forEach(sortRules);
+
+ var isArrayContext = Array.isArray(context);
+
+ context = (options && options.context) || context;
+
+ if (context && !isArrayContext) context = [context];
+
+ absolutize(token, options, context);
+
+ var shouldTestNextSiblings = false;
+
+ var query = token
+ .map(function(rules) {
+ if (rules[0] && rules[1] && rules[0].name === "scope") {
+ var ruleType = rules[1].type;
+ if (isArrayContext && ruleType === "descendant") {
+ rules[1] = FLEXIBLE_DESCENDANT_TOKEN;
+ } else if (ruleType === "adjacent" || ruleType === "sibling") {
+ shouldTestNextSiblings = true;
+ }
+ }
+ return compileRules(rules, options, context);
+ })
+ .reduce(reduceRules, falseFunc);
+
+ query.shouldTestNextSiblings = shouldTestNextSiblings;
+
+ return query;
+}
+
+function isTraversal(t) {
+ return procedure[t.type] < 0;
+}
+
+function compileRules(rules, options, context) {
+ return rules.reduce(function(func, rule) {
+ if (func === falseFunc) return func;
+
+ if (!(rule.type in Rules)) {
+ throw new Error("Rule type " + rule.type + " is not supported by css-select");
+ }
+
+ return Rules[rule.type](func, rule, options, context);
+ }, (options && options.rootFunc) || trueFunc);
+}
+
+function reduceRules(a, b) {
+ if (b === falseFunc || a === trueFunc) {
+ return a;
+ }
+ if (a === falseFunc || b === trueFunc) {
+ return b;
+ }
+
+ return function combine(elem) {
+ return a(elem) || b(elem);
+ };
+}
+
+function containsTraversal(t) {
+ return t.some(isTraversal);
+}
+
+//:not, :has and :matches have to compile selectors
+//doing this in lib/pseudos.js would lead to circular dependencies,
+//so we add them here
+filters.not = function(next, token, options, context) {
+ var opts = {
+ xmlMode: !!(options && options.xmlMode),
+ strict: !!(options && options.strict),
+ adapter: options.adapter
+ };
+
+ if (opts.strict) {
+ if (token.length > 1 || token.some(containsTraversal)) {
+ throw new Error("complex selectors in :not aren't allowed in strict mode");
+ }
+ }
+
+ var func = compileToken(token, opts, context);
+
+ if (func === falseFunc) return next;
+ if (func === trueFunc) return falseFunc;
+
+ return function not(elem) {
+ return !func(elem) && next(elem);
+ };
+};
+
+filters.has = function(next, token, options) {
+ var adapter = options.adapter;
+ var opts = {
+ xmlMode: !!(options && options.xmlMode),
+ strict: !!(options && options.strict),
+ adapter: adapter
+ };
+
+ //FIXME: Uses an array as a pointer to the current element (side effects)
+ var context = token.some(containsTraversal) ? [PLACEHOLDER_ELEMENT] : null;
+
+ var func = compileToken(token, opts, context);
+
+ if (func === falseFunc) return falseFunc;
+ if (func === trueFunc) {
+ return function hasChild(elem) {
+ return adapter.getChildren(elem).some(adapter.isTag) && next(elem);
+ };
+ }
+
+ func = wrap(func, options);
+
+ if (context) {
+ return function has(elem) {
+ return next(elem) && ((context[0] = elem), adapter.existsOne(func, adapter.getChildren(elem)));
+ };
+ }
+
+ return function has(elem) {
+ return next(elem) && adapter.existsOne(func, adapter.getChildren(elem));
+ };
+};
+
+filters.matches = function(next, token, options, context) {
+ var opts = {
+ xmlMode: !!(options && options.xmlMode),
+ strict: !!(options && options.strict),
+ rootFunc: next,
+ adapter: options.adapter
+ };
+
+ return compileToken(token, opts, context);
+};
+
+compile.compileToken = compileToken;
+compile.compileUnsafe = compileUnsafe;
+compile.Pseudos = Pseudos;