diff options
Diffstat (limited to 'frontend-old/node_modules/protobufjs/src/tokenize.js')
| -rw-r--r-- | frontend-old/node_modules/protobufjs/src/tokenize.js | 416 |
1 files changed, 0 insertions, 416 deletions
diff --git a/frontend-old/node_modules/protobufjs/src/tokenize.js b/frontend-old/node_modules/protobufjs/src/tokenize.js deleted file mode 100644 index f107bea..0000000 --- a/frontend-old/node_modules/protobufjs/src/tokenize.js +++ /dev/null @@ -1,416 +0,0 @@ -"use strict"; -module.exports = tokenize; - -var delimRe = /[\s{}=;:[\],'"()<>]/g, - stringDoubleRe = /(?:"([^"\\]*(?:\\.[^"\\]*)*)")/g, - stringSingleRe = /(?:'([^'\\]*(?:\\.[^'\\]*)*)')/g; - -var setCommentRe = /^ *[*/]+ */, - setCommentAltRe = /^\s*\*?\/*/, - setCommentSplitRe = /\n/g, - whitespaceRe = /\s/, - unescapeRe = /\\(.?)/g; - -var unescapeMap = { - "0": "\0", - "r": "\r", - "n": "\n", - "t": "\t" -}; - -/** - * Unescapes a string. - * @param {string} str String to unescape - * @returns {string} Unescaped string - * @property {Object.<string,string>} map Special characters map - * @memberof tokenize - */ -function unescape(str) { - return str.replace(unescapeRe, function($0, $1) { - switch ($1) { - case "\\": - case "": - return $1; - default: - return unescapeMap[$1] || ""; - } - }); -} - -tokenize.unescape = unescape; - -/** - * Gets the next token and advances. - * @typedef TokenizerHandleNext - * @type {function} - * @returns {string|null} Next token or `null` on eof - */ - -/** - * Peeks for the next token. - * @typedef TokenizerHandlePeek - * @type {function} - * @returns {string|null} Next token or `null` on eof - */ - -/** - * Pushes a token back to the stack. - * @typedef TokenizerHandlePush - * @type {function} - * @param {string} token Token - * @returns {undefined} - */ - -/** - * Skips the next token. - * @typedef TokenizerHandleSkip - * @type {function} - * @param {string} expected Expected token - * @param {boolean} [optional=false] If optional - * @returns {boolean} Whether the token matched - * @throws {Error} If the token didn't match and is not optional - */ - -/** - * Gets the comment on the previous line or, alternatively, the line comment on the specified line. - * @typedef TokenizerHandleCmnt - * @type {function} - * @param {number} [line] Line number - * @returns {string|null} Comment text or `null` if none - */ - -/** - * Handle object returned from {@link tokenize}. - * @interface ITokenizerHandle - * @property {TokenizerHandleNext} next Gets the next token and advances (`null` on eof) - * @property {TokenizerHandlePeek} peek Peeks for the next token (`null` on eof) - * @property {TokenizerHandlePush} push Pushes a token back to the stack - * @property {TokenizerHandleSkip} skip Skips a token, returns its presence and advances or, if non-optional and not present, throws - * @property {TokenizerHandleCmnt} cmnt Gets the comment on the previous line or the line comment on the specified line, if any - * @property {number} line Current line number - */ - -/** - * Tokenizes the given .proto source and returns an object with useful utility functions. - * @param {string} source Source contents - * @param {boolean} alternateCommentMode Whether we should activate alternate comment parsing mode. - * @returns {ITokenizerHandle} Tokenizer handle - */ -function tokenize(source, alternateCommentMode) { - /* eslint-disable callback-return */ - source = source.toString(); - - var offset = 0, - length = source.length, - line = 1, - lastCommentLine = 0, - comments = {}; - - var stack = []; - - var stringDelim = null; - - /* istanbul ignore next */ - /** - * Creates an error for illegal syntax. - * @param {string} subject Subject - * @returns {Error} Error created - * @inner - */ - function illegal(subject) { - return Error("illegal " + subject + " (line " + line + ")"); - } - - /** - * Reads a string till its end. - * @returns {string} String read - * @inner - */ - function readString() { - var re = stringDelim === "'" ? stringSingleRe : stringDoubleRe; - re.lastIndex = offset - 1; - var match = re.exec(source); - if (!match) - throw illegal("string"); - offset = re.lastIndex; - push(stringDelim); - stringDelim = null; - return unescape(match[1]); - } - - /** - * Gets the character at `pos` within the source. - * @param {number} pos Position - * @returns {string} Character - * @inner - */ - function charAt(pos) { - return source.charAt(pos); - } - - /** - * Sets the current comment text. - * @param {number} start Start offset - * @param {number} end End offset - * @param {boolean} isLeading set if a leading comment - * @returns {undefined} - * @inner - */ - function setComment(start, end, isLeading) { - var comment = { - type: source.charAt(start++), - lineEmpty: false, - leading: isLeading, - }; - var lookback; - if (alternateCommentMode) { - lookback = 2; // alternate comment parsing: "//" or "/*" - } else { - lookback = 3; // "///" or "/**" - } - var commentOffset = start - lookback, - c; - do { - if (--commentOffset < 0 || - (c = source.charAt(commentOffset)) === "\n") { - comment.lineEmpty = true; - break; - } - } while (c === " " || c === "\t"); - var lines = source - .substring(start, end) - .split(setCommentSplitRe); - for (var i = 0; i < lines.length; ++i) - lines[i] = lines[i] - .replace(alternateCommentMode ? setCommentAltRe : setCommentRe, "") - .trim(); - comment.text = lines - .join("\n") - .trim(); - - comments[line] = comment; - lastCommentLine = line; - } - - function isDoubleSlashCommentLine(startOffset) { - var endOffset = findEndOfLine(startOffset); - - // see if remaining line matches comment pattern - var lineText = source.substring(startOffset, endOffset); - var isComment = /^\s*\/\//.test(lineText); - return isComment; - } - - function findEndOfLine(cursor) { - // find end of cursor's line - var endOffset = cursor; - while (endOffset < length && charAt(endOffset) !== "\n") { - endOffset++; - } - return endOffset; - } - - /** - * Obtains the next token. - * @returns {string|null} Next token or `null` on eof - * @inner - */ - function next() { - if (stack.length > 0) - return stack.shift(); - if (stringDelim) - return readString(); - var repeat, - prev, - curr, - start, - isDoc, - isLeadingComment = offset === 0; - do { - if (offset === length) - return null; - repeat = false; - while (whitespaceRe.test(curr = charAt(offset))) { - if (curr === "\n") { - isLeadingComment = true; - ++line; - } - if (++offset === length) - return null; - } - - if (charAt(offset) === "/") { - if (++offset === length) { - throw illegal("comment"); - } - if (charAt(offset) === "/") { // Line - if (!alternateCommentMode) { - // check for triple-slash comment - isDoc = charAt(start = offset + 1) === "/"; - - while (charAt(++offset) !== "\n") { - if (offset === length) { - return null; - } - } - ++offset; - if (isDoc) { - setComment(start, offset - 1, isLeadingComment); - // Trailing comment cannot not be multi-line, - // so leading comment state should be reset to handle potential next comments - isLeadingComment = true; - } - ++line; - repeat = true; - } else { - // check for double-slash comments, consolidating consecutive lines - start = offset; - isDoc = false; - if (isDoubleSlashCommentLine(offset - 1)) { - isDoc = true; - do { - offset = findEndOfLine(offset); - if (offset === length) { - break; - } - offset++; - if (!isLeadingComment) { - // Trailing comment cannot not be multi-line - break; - } - } while (isDoubleSlashCommentLine(offset)); - } else { - offset = Math.min(length, findEndOfLine(offset) + 1); - } - if (isDoc) { - setComment(start, offset, isLeadingComment); - isLeadingComment = true; - } - line++; - repeat = true; - } - } else if ((curr = charAt(offset)) === "*") { /* Block */ - // check for /** (regular comment mode) or /* (alternate comment mode) - start = offset + 1; - isDoc = alternateCommentMode || charAt(start) === "*"; - do { - if (curr === "\n") { - ++line; - } - if (++offset === length) { - throw illegal("comment"); - } - prev = curr; - curr = charAt(offset); - } while (prev !== "*" || curr !== "/"); - ++offset; - if (isDoc) { - setComment(start, offset - 2, isLeadingComment); - isLeadingComment = true; - } - repeat = true; - } else { - return "/"; - } - } - } while (repeat); - - // offset !== length if we got here - - var end = offset; - delimRe.lastIndex = 0; - var delim = delimRe.test(charAt(end++)); - if (!delim) - while (end < length && !delimRe.test(charAt(end))) - ++end; - var token = source.substring(offset, offset = end); - if (token === "\"" || token === "'") - stringDelim = token; - return token; - } - - /** - * Pushes a token back to the stack. - * @param {string} token Token - * @returns {undefined} - * @inner - */ - function push(token) { - stack.push(token); - } - - /** - * Peeks for the next token. - * @returns {string|null} Token or `null` on eof - * @inner - */ - function peek() { - if (!stack.length) { - var token = next(); - if (token === null) - return null; - push(token); - } - return stack[0]; - } - - /** - * Skips a token. - * @param {string} expected Expected token - * @param {boolean} [optional=false] Whether the token is optional - * @returns {boolean} `true` when skipped, `false` if not - * @throws {Error} When a required token is not present - * @inner - */ - function skip(expected, optional) { - var actual = peek(), - equals = actual === expected; - if (equals) { - next(); - return true; - } - if (!optional) - throw illegal("token '" + actual + "', '" + expected + "' expected"); - return false; - } - - /** - * Gets a comment. - * @param {number} [trailingLine] Line number if looking for a trailing comment - * @returns {string|null} Comment text - * @inner - */ - function cmnt(trailingLine) { - var ret = null; - var comment; - if (trailingLine === undefined) { - comment = comments[line - 1]; - delete comments[line - 1]; - if (comment && (alternateCommentMode || comment.type === "*" || comment.lineEmpty)) { - ret = comment.leading ? comment.text : null; - } - } else { - /* istanbul ignore else */ - if (lastCommentLine < trailingLine) { - peek(); - } - comment = comments[trailingLine]; - delete comments[trailingLine]; - if (comment && !comment.lineEmpty && (alternateCommentMode || comment.type === "/")) { - ret = comment.leading ? null : comment.text; - } - } - return ret; - } - - return Object.defineProperty({ - next: next, - peek: peek, - push: push, - skip: skip, - cmnt: cmnt - }, "line", { - get: function() { return line; } - }); - /* eslint-enable callback-return */ -} |
