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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/css-selector-tokenizer/lib/parse.js
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diff --git a/node_modules/css-selector-tokenizer/lib/parse.js b/node_modules/css-selector-tokenizer/lib/parse.js
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+"use strict";
+
+var Parser = require("fastparse");
+var uniRegexp = require("./uni-regexp");
+
+function unescape(str) {
+ return str.replace(/\\(.)/g, "$1");
+}
+
+function commentMatch(match, content) {
+ this.selector.nodes.push({
+ type: "comment",
+ content: content
+ });
+}
+
+function typeMatch(type) {
+ return function(match, name) {
+ this.selector.nodes.push({
+ type: type,
+ name: unescape(name)
+ });
+ };
+}
+
+function pseudoClassStartMatch(match, name) {
+ var newToken = {
+ type: "pseudo-class",
+ name: unescape(name),
+ content: ""
+ };
+ this.selector.nodes.push(newToken);
+ this.token = newToken;
+ this.brackets = 1;
+ return "inBrackets";
+}
+
+function nestedPseudoClassStartMatch(match, name, after) {
+ var newSelector = {
+ type: "selector",
+ nodes: []
+ };
+ var newToken = {
+ type: "nested-pseudo-class",
+ name: unescape(name),
+ nodes: [newSelector]
+ };
+ if(after) {
+ newSelector.before = after;
+ }
+ this.selector.nodes.push(newToken);
+ this.stack.push(this.root);
+ this.root = newToken;
+ this.selector = newSelector;
+}
+
+function nestedEnd(match, before) {
+ if(this.stack.length > 0) {
+ if(before) {
+ this.selector.after = before;
+ }
+ this.root = this.stack.pop();
+ this.selector = this.root.nodes[this.root.nodes.length - 1];
+ } else {
+ this.selector.nodes.push({
+ type: "invalid",
+ value: match
+ });
+ }
+}
+
+function operatorMatch(match, before, operator, after) {
+ var token = {
+ type: "operator",
+ operator: operator
+ };
+ if(before) {
+ token.before = before;
+ }
+ if(after) {
+ token.after = after;
+ }
+ this.selector.nodes.push(token);
+}
+
+function spacingMatch(match) {
+ this.selector.nodes.push({
+ type: "spacing",
+ value: match
+ });
+}
+
+function elementMatch(match, namespace, name) {
+ var newToken = {
+ type: "element",
+ name: unescape(name)
+ };
+
+ if(namespace) {
+ newToken.namespace = unescape(namespace.substr(0, namespace.length - 1));
+ }
+ this.selector.nodes.push(newToken);
+}
+
+function universalMatch(match, namespace) {
+ var newToken = {
+ type: "universal"
+ };
+ if(namespace) {
+ newToken.namespace = unescape(namespace.substr(0, namespace.length - 1));
+ }
+ this.selector.nodes.push(newToken);
+}
+
+function attributeMatch(match, content) {
+ this.selector.nodes.push({
+ type: "attribute",
+ content: content
+ });
+}
+
+function invalidMatch(match) {
+ this.selector.nodes.push({
+ type: "invalid",
+ value: match
+ });
+}
+
+function irrelevantSpacingStartMatch(match) {
+ this.selector.before = match;
+}
+
+function irrelevantSpacingEndMatch(match) {
+ this.selector.after = match;
+}
+
+function nextSelectorMatch(match, before, after) {
+ var newSelector = {
+ type: "selector",
+ nodes: []
+ };
+ if(before) {
+ this.selector.after = before;
+ }
+ if(after) {
+ newSelector.before = after;
+ }
+ this.root.nodes.push(newSelector);
+ this.selector = newSelector;
+}
+
+function addToCurrent(match) {
+ this.token.content += match;
+}
+
+function bracketStart(match) {
+ this.token.content += match;
+ this.brackets++;
+}
+
+function bracketEnd(match) {
+ if(--this.brackets === 0) {
+ return "selector";
+ }
+ this.token.content += match;
+}
+
+function getSelectors() {
+ // The assignment here is split to preserve the property enumeration order.
+ var selectors = {
+ "/\\*([\\s\\S]*?)\\*/": commentMatch
+ };
+ // https://www.w3.org/TR/CSS21/syndata.html#characters
+ // 4.1.3: identifiers (...) can contain only the characters [a-zA-Z0-9] and
+ // ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the underscore (_)
+ //
+ // 10ffff is the maximum allowed in current Unicode
+ selectors[uniRegexp.typeMatchClass] = typeMatch("class");
+ selectors[uniRegexp.typeMatchId] = typeMatch("id");
+ var selectorsSecondHalf = {
+ ":(not|matches|has|local|global)\\((\\s*)": nestedPseudoClassStartMatch,
+ ":((?:\\\\.|[A-Za-z_\\-0-9])+)\\(": pseudoClassStartMatch,
+ ":((?:\\\\.|[A-Za-z_\\-0-9])+)": typeMatch("pseudo-class"),
+ "::((?:\\\\.|[A-Za-z_\\-0-9])+)": typeMatch("pseudo-element"),
+ "(\\*\\|)((?:\\\\.|[A-Za-z_\\-0-9])+)": elementMatch,
+ "(\\*\\|)\\*": universalMatch,
+ "((?:\\\\.|[A-Za-z_\\-0-9])*\\|)?\\*": universalMatch,
+ "((?:\\\\.|[A-Za-z_\\-0-9])*\\|)?((?:\\\\.|[A-Za-z_\\-])(?:\\\\.|[A-Za-z_\\-0-9])*)": elementMatch,
+ "\\[([^\\]]+)\\]": attributeMatch,
+ "(\\s*)\\)": nestedEnd,
+ "(\\s*)((?:\\|\\|)|(?:>>)|[>+~])(\\s*)": operatorMatch,
+ "(\\s*),(\\s*)": nextSelectorMatch,
+ "\\s+$": irrelevantSpacingEndMatch,
+ "^\\s+": irrelevantSpacingStartMatch,
+ "\\s+": spacingMatch,
+ ".": invalidMatch
+ };
+ var selector;
+ for (selector in selectorsSecondHalf) {
+ if (Object.prototype.hasOwnProperty.call(selectorsSecondHalf, selector)) {
+ selectors[selector] = selectorsSecondHalf[selector];
+ }
+ }
+ return selectors;
+}
+
+var parser = new Parser({
+ selector: getSelectors(),
+ inBrackets: {
+ "/\\*[\\s\\S]*?\\*/": addToCurrent,
+ "\"([^\\\\\"]|\\\\.)*\"": addToCurrent,
+ "'([^\\\\']|\\\\.)*'": addToCurrent,
+ "[^()'\"/]+": addToCurrent,
+ "\\(": bracketStart,
+ "\\)": bracketEnd,
+ ".": addToCurrent
+ }
+});
+
+function parse(str) {
+ var selectorNode = {
+ type: "selector",
+ nodes: []
+ };
+ var rootNode = {
+ type: "selectors",
+ nodes: [
+ selectorNode
+ ]
+ };
+ parser.parse("selector", str, {
+ stack: [],
+ root: rootNode,
+ selector: selectorNode
+ });
+ return rootNode;
+}
+
+module.exports = parse;