save code
This commit is contained in:
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MIT License
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Copyright (c) 2014-present Sebastian McKenzie and other contributors
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# @babel/helper-string-parser
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> A utility package to parse strings
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See our website [@babel/helper-string-parser](https://babeljs.io/docs/babel-helper-string-parser) for more information.
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## Install
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Using npm:
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```sh
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npm install --save @babel/helper-string-parser
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```
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or using yarn:
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```sh
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yarn add @babel/helper-string-parser
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```
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+295
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.readCodePoint = readCodePoint;
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exports.readInt = readInt;
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exports.readStringContents = readStringContents;
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var _isDigit = function isDigit(code) {
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return code >= 48 && code <= 57;
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};
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const forbiddenNumericSeparatorSiblings = {
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decBinOct: new Set([46, 66, 69, 79, 95, 98, 101, 111]),
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hex: new Set([46, 88, 95, 120])
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};
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const isAllowedNumericSeparatorSibling = {
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bin: ch => ch === 48 || ch === 49,
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oct: ch => ch >= 48 && ch <= 55,
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dec: ch => ch >= 48 && ch <= 57,
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hex: ch => ch >= 48 && ch <= 57 || ch >= 65 && ch <= 70 || ch >= 97 && ch <= 102
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};
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function readStringContents(type, input, pos, lineStart, curLine, errors) {
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const initialPos = pos;
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const initialLineStart = lineStart;
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const initialCurLine = curLine;
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let out = "";
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let firstInvalidLoc = null;
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let chunkStart = pos;
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const {
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length
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} = input;
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for (;;) {
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if (pos >= length) {
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errors.unterminated(initialPos, initialLineStart, initialCurLine);
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out += input.slice(chunkStart, pos);
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break;
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}
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const ch = input.charCodeAt(pos);
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if (isStringEnd(type, ch, input, pos)) {
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out += input.slice(chunkStart, pos);
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break;
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}
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if (ch === 92) {
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out += input.slice(chunkStart, pos);
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const res = readEscapedChar(input, pos, lineStart, curLine, type === "template", errors);
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if (res.ch === null && !firstInvalidLoc) {
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firstInvalidLoc = {
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pos,
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lineStart,
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curLine
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};
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} else {
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out += res.ch;
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}
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({
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pos,
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lineStart,
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curLine
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} = res);
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chunkStart = pos;
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} else if (ch === 8232 || ch === 8233) {
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++pos;
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++curLine;
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lineStart = pos;
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} else if (ch === 10 || ch === 13) {
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if (type === "template") {
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out += input.slice(chunkStart, pos) + "\n";
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++pos;
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if (ch === 13 && input.charCodeAt(pos) === 10) {
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++pos;
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}
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++curLine;
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chunkStart = lineStart = pos;
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} else {
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errors.unterminated(initialPos, initialLineStart, initialCurLine);
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}
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} else {
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++pos;
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}
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}
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return {
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pos,
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str: out,
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firstInvalidLoc,
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lineStart,
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curLine,
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containsInvalid: !!firstInvalidLoc
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};
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}
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function isStringEnd(type, ch, input, pos) {
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if (type === "template") {
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return ch === 96 || ch === 36 && input.charCodeAt(pos + 1) === 123;
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}
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return ch === (type === "double" ? 34 : 39);
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}
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function readEscapedChar(input, pos, lineStart, curLine, inTemplate, errors) {
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const throwOnInvalid = !inTemplate;
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pos++;
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const res = ch => ({
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pos,
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ch,
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lineStart,
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curLine
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});
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const ch = input.charCodeAt(pos++);
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switch (ch) {
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case 110:
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return res("\n");
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case 114:
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return res("\r");
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case 120:
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{
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let code;
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({
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code,
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pos
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} = readHexChar(input, pos, lineStart, curLine, 2, false, throwOnInvalid, errors));
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return res(code === null ? null : String.fromCharCode(code));
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}
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case 117:
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{
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let code;
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({
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code,
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pos
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} = readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors));
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return res(code === null ? null : String.fromCodePoint(code));
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}
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case 116:
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return res("\t");
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case 98:
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return res("\b");
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case 118:
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return res("\u000b");
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case 102:
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return res("\f");
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case 13:
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if (input.charCodeAt(pos) === 10) {
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++pos;
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}
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case 10:
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lineStart = pos;
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++curLine;
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case 8232:
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case 8233:
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return res("");
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case 56:
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case 57:
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if (inTemplate) {
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return res(null);
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} else {
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errors.strictNumericEscape(pos - 1, lineStart, curLine);
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}
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default:
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if (ch >= 48 && ch <= 55) {
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const startPos = pos - 1;
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const match = /^[0-7]+/.exec(input.slice(startPos, pos + 2));
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let octalStr = match[0];
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let octal = parseInt(octalStr, 8);
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if (octal > 255) {
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octalStr = octalStr.slice(0, -1);
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octal = parseInt(octalStr, 8);
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}
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pos += octalStr.length - 1;
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const next = input.charCodeAt(pos);
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if (octalStr !== "0" || next === 56 || next === 57) {
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if (inTemplate) {
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return res(null);
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} else {
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errors.strictNumericEscape(startPos, lineStart, curLine);
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}
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}
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return res(String.fromCharCode(octal));
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}
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return res(String.fromCharCode(ch));
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}
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}
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function readHexChar(input, pos, lineStart, curLine, len, forceLen, throwOnInvalid, errors) {
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const initialPos = pos;
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let n;
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({
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n,
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pos
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} = readInt(input, pos, lineStart, curLine, 16, len, forceLen, false, errors, !throwOnInvalid));
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if (n === null) {
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if (throwOnInvalid) {
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errors.invalidEscapeSequence(initialPos, lineStart, curLine);
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} else {
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pos = initialPos - 1;
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}
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}
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return {
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code: n,
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pos
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};
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}
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function readInt(input, pos, lineStart, curLine, radix, len, forceLen, allowNumSeparator, errors, bailOnError) {
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const start = pos;
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const forbiddenSiblings = radix === 16 ? forbiddenNumericSeparatorSiblings.hex : forbiddenNumericSeparatorSiblings.decBinOct;
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const isAllowedSibling = radix === 16 ? isAllowedNumericSeparatorSibling.hex : radix === 10 ? isAllowedNumericSeparatorSibling.dec : radix === 8 ? isAllowedNumericSeparatorSibling.oct : isAllowedNumericSeparatorSibling.bin;
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let invalid = false;
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let total = 0;
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for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) {
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const code = input.charCodeAt(pos);
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let val;
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if (code === 95 && allowNumSeparator !== "bail") {
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const prev = input.charCodeAt(pos - 1);
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const next = input.charCodeAt(pos + 1);
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if (!allowNumSeparator) {
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if (bailOnError) return {
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n: null,
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pos
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};
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errors.numericSeparatorInEscapeSequence(pos, lineStart, curLine);
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} else if (Number.isNaN(next) || !isAllowedSibling(next) || forbiddenSiblings.has(prev) || forbiddenSiblings.has(next)) {
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if (bailOnError) return {
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n: null,
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pos
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};
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errors.unexpectedNumericSeparator(pos, lineStart, curLine);
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}
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++pos;
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continue;
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}
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if (code >= 97) {
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val = code - 97 + 10;
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} else if (code >= 65) {
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val = code - 65 + 10;
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} else if (_isDigit(code)) {
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val = code - 48;
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} else {
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val = Infinity;
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}
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if (val >= radix) {
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if (val <= 9 && bailOnError) {
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return {
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n: null,
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pos
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};
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} else if (val <= 9 && errors.invalidDigit(pos, lineStart, curLine, radix)) {
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val = 0;
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} else if (forceLen) {
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val = 0;
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invalid = true;
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} else {
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break;
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}
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}
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++pos;
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total = total * radix + val;
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}
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if (pos === start || len != null && pos - start !== len || invalid) {
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return {
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n: null,
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pos
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};
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}
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return {
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n: total,
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pos
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};
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}
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function readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors) {
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const ch = input.charCodeAt(pos);
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let code;
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if (ch === 123) {
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++pos;
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({
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code,
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pos
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} = readHexChar(input, pos, lineStart, curLine, input.indexOf("}", pos) - pos, true, throwOnInvalid, errors));
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++pos;
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if (code !== null && code > 0x10ffff) {
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if (throwOnInvalid) {
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errors.invalidCodePoint(pos, lineStart, curLine);
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} else {
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return {
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code: null,
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pos
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};
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}
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}
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} else {
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({
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code,
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pos
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} = readHexChar(input, pos, lineStart, curLine, 4, false, throwOnInvalid, errors));
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}
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return {
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code,
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pos
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};
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}
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//# sourceMappingURL=index.js.map
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+1
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{"version":3,"names":["isDigit","code","forbiddenNumericSeparatorSiblings","decBinOct","Set","hex","isAllowedNumericSeparatorSibling","bin","ch","oct","dec","readStringContents","type","input","pos","lineStart","curLine","errors","initialPos","initialLineStart","initialCurLine","out","firstInvalidLoc","chunkStart","length","unterminated","slice","charCodeAt","isStringEnd","res","readEscapedChar","str","containsInvalid","inTemplate","throwOnInvalid","readHexChar","String","fromCharCode","readCodePoint","fromCodePoint","strictNumericEscape","startPos","match","exec","octalStr","octal","parseInt","next","len","forceLen","n","readInt","invalidEscapeSequence","radix","allowNumSeparator","bailOnError","start","forbiddenSiblings","isAllowedSibling","invalid","total","i","e","Infinity","val","prev","numericSeparatorInEscapeSequence","Number","isNaN","has","unexpectedNumericSeparator","_isDigit","invalidDigit","indexOf","invalidCodePoint"],"sources":["../src/index.ts"],"sourcesContent":["// We inline this package\n// eslint-disable-next-line import/no-extraneous-dependencies\nimport * as charCodes from \"charcodes\";\n\n// The following character codes are forbidden from being\n// an immediate sibling of NumericLiteralSeparator _\nconst forbiddenNumericSeparatorSiblings = {\n decBinOct: new Set<number>([\n charCodes.dot,\n charCodes.uppercaseB,\n charCodes.uppercaseE,\n charCodes.uppercaseO,\n charCodes.underscore, // multiple separators are not allowed\n charCodes.lowercaseB,\n charCodes.lowercaseE,\n charCodes.lowercaseO,\n ]),\n hex: new Set<number>([\n charCodes.dot,\n charCodes.uppercaseX,\n charCodes.underscore, // multiple separators are not allowed\n charCodes.lowercaseX,\n ]),\n};\n\nconst isAllowedNumericSeparatorSibling = {\n // 0 - 1\n bin: (ch: number) => ch === charCodes.digit0 || ch === charCodes.digit1,\n\n // 0 - 7\n oct: (ch: number) => ch >= charCodes.digit0 && ch <= charCodes.digit7,\n\n // 0 - 9\n dec: (ch: number) => ch >= charCodes.digit0 && ch <= charCodes.digit9,\n\n // 0 - 9, A - F, a - f,\n hex: (ch: number) =>\n (ch >= charCodes.digit0 && ch <= charCodes.digit9) ||\n (ch >= charCodes.uppercaseA && ch <= charCodes.uppercaseF) ||\n (ch >= charCodes.lowercaseA && ch <= charCodes.lowercaseF),\n};\n\nexport type StringContentsErrorHandlers = EscapedCharErrorHandlers & {\n unterminated(\n initialPos: number,\n initialLineStart: number,\n initialCurLine: number,\n ): void;\n};\n\nexport function readStringContents(\n type: \"single\" | \"double\" | \"template\",\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n errors: StringContentsErrorHandlers,\n) {\n const initialPos = pos;\n const initialLineStart = lineStart;\n const initialCurLine = curLine;\n\n let out = \"\";\n let firstInvalidLoc = null;\n let chunkStart = pos;\n const { length } = input;\n for (;;) {\n if (pos >= length) {\n errors.unterminated(initialPos, initialLineStart, initialCurLine);\n out += input.slice(chunkStart, pos);\n break;\n }\n const ch = input.charCodeAt(pos);\n if (isStringEnd(type, ch, input, pos)) {\n out += input.slice(chunkStart, pos);\n break;\n }\n if (ch === charCodes.backslash) {\n out += input.slice(chunkStart, pos);\n const res = readEscapedChar(\n input,\n pos,\n lineStart,\n curLine,\n type === \"template\",\n errors,\n );\n if (res.ch === null && !firstInvalidLoc) {\n firstInvalidLoc = { pos, lineStart, curLine };\n } else {\n out += res.ch;\n }\n ({ pos, lineStart, curLine } = res);\n chunkStart = pos;\n } else if (\n ch === charCodes.lineSeparator ||\n ch === charCodes.paragraphSeparator\n ) {\n ++pos;\n ++curLine;\n lineStart = pos;\n } else if (ch === charCodes.lineFeed || ch === charCodes.carriageReturn) {\n if (type === \"template\") {\n out += input.slice(chunkStart, pos) + \"\\n\";\n ++pos;\n if (\n ch
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Reference in New Issue
Block a user