a3073e0420
Move major DevTools files to new directories using the following steps: hg mv browser/devtools devtools/client hg mv toolkit/devtools/server devtools/server hg mv toolkit/devtools devtools/shared No other changes are made.
96 lines
2.8 KiB
JavaScript
96 lines
2.8 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const {Cc, Ci} = require("chrome");
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loader.lazyGetter(this, "DOMUtils", () => {
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return Cc["@mozilla.org/inspector/dom-utils;1"].getService(Ci.inIDOMUtils);
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});
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/**
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* A generator function that lexes a CSS source string, yielding the
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* CSS tokens. Comment tokens are dropped.
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*
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* @param {String} CSS source string
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* @yield {CSSToken} The next CSSToken that is lexed
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* @see CSSToken for details about the returned tokens
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*/
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function* cssTokenizer(string) {
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let lexer = DOMUtils.getCSSLexer(string);
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while (true) {
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let token = lexer.nextToken();
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if (!token) {
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break;
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}
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// None of the existing consumers want comments.
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if (token.tokenType !== "comment") {
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yield token;
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}
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}
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}
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exports.cssTokenizer = cssTokenizer;
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/**
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* Pass |string| to the CSS lexer and return an array of all the
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* returned tokens. Comment tokens are not included. In addition to
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* the usual information, each token will have starting and ending
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* line and column information attached. Specifically, each token
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* has an additional "loc" attribute. This attribute is an object
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* of the form {line: L, column: C}. Lines and columns are both zero
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* based.
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*
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* It's best not to add new uses of this function. In general it is
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* simpler and better to use the CSSToken offsets, rather than line
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* and column. Also, this function lexes the entire input string at
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* once, rather than lazily yielding a token stream. Use
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* |cssTokenizer| or |DOMUtils.getCSSLexer| instead.
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*
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* @param{String} string The input string.
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* @return {Array} An array of tokens (@see CSSToken) that have
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* line and column information.
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*/
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function cssTokenizerWithLineColumn(string) {
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let lexer = DOMUtils.getCSSLexer(string);
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let result = [];
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let prevToken = undefined;
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while (true) {
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let token = lexer.nextToken();
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let lineNumber = lexer.lineNumber;
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let columnNumber = lexer.columnNumber;
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if (prevToken) {
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prevToken.loc.end = {
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line: lineNumber,
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column: columnNumber
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};
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}
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if (!token) {
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break;
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}
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if (token.tokenType === "comment") {
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// We've already dealt with the previous token's location.
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prevToken = undefined;
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} else {
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let startLoc = {
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line: lineNumber,
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column: columnNumber
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};
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token.loc = {start: startLoc};
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result.push(token);
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prevToken = token;
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}
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}
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return result;
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}
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exports.cssTokenizerWithLineColumn = cssTokenizerWithLineColumn;
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