mirror of
https://github.com/denoland/deno.git
synced 2024-10-31 09:14:20 -04:00
1797 lines
46 KiB
TypeScript
1797 lines
46 KiB
TypeScript
// Ported from js-yaml v3.13.1:
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// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
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// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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/* eslint-disable max-len */
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import { YAMLError } from "../error.ts";
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import { Mark } from "../mark.ts";
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import { Type } from "../type.ts";
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import * as common from "../utils.ts";
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import { LoaderState, LoaderStateOptions, ResultType } from "./loader_state.ts";
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type Any = common.Any;
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type ArrayObject<T = Any> = common.ArrayObject<T>;
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const _hasOwnProperty = Object.prototype.hasOwnProperty;
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const CONTEXT_FLOW_IN = 1;
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const CONTEXT_FLOW_OUT = 2;
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const CONTEXT_BLOCK_IN = 3;
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const CONTEXT_BLOCK_OUT = 4;
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const CHOMPING_CLIP = 1;
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const CHOMPING_STRIP = 2;
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const CHOMPING_KEEP = 3;
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const PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
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const PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
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const PATTERN_FLOW_INDICATORS = /[,\[\]\{\}]/;
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const PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\-]+!)$/i;
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/* eslint-disable-next-line max-len */
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const PATTERN_TAG_URI = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
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function _class(obj: unknown): string {
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return Object.prototype.toString.call(obj);
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}
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function isEOL(c: number): boolean {
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return c === 0x0a /* LF */ || c === 0x0d /* CR */;
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}
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function isWhiteSpace(c: number): boolean {
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return c === 0x09 /* Tab */ || c === 0x20 /* Space */;
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}
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function isWsOrEol(c: number): boolean {
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return (
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c === 0x09 /* Tab */ ||
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c === 0x20 /* Space */ ||
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c === 0x0a /* LF */ ||
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c === 0x0d /* CR */
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);
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}
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function isFlowIndicator(c: number): boolean {
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return (
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c === 0x2c /* , */ ||
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c === 0x5b /* [ */ ||
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c === 0x5d /* ] */ ||
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c === 0x7b /* { */ ||
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c === 0x7d /* } */
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);
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}
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function fromHexCode(c: number): number {
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if (0x30 /* 0 */ <= c && c <= 0x39 /* 9 */) {
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return c - 0x30;
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}
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const lc = c | 0x20;
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if (0x61 /* a */ <= lc && lc <= 0x66 /* f */) {
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return lc - 0x61 + 10;
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}
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return -1;
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}
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function escapedHexLen(c: number): number {
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if (c === 0x78 /* x */) {
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return 2;
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}
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if (c === 0x75 /* u */) {
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return 4;
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}
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if (c === 0x55 /* U */) {
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return 8;
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}
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return 0;
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}
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function fromDecimalCode(c: number): number {
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if (0x30 /* 0 */ <= c && c <= 0x39 /* 9 */) {
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return c - 0x30;
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}
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return -1;
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}
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function simpleEscapeSequence(c: number): string {
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/* eslint:disable:prettier */
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return c === 0x30 /* 0 */
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? "\x00"
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: c === 0x61 /* a */
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? "\x07"
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: c === 0x62 /* b */
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? "\x08"
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: c === 0x74 /* t */
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? "\x09"
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: c === 0x09 /* Tab */
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? "\x09"
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: c === 0x6e /* n */
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? "\x0A"
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: c === 0x76 /* v */
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? "\x0B"
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: c === 0x66 /* f */
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? "\x0C"
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: c === 0x72 /* r */
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? "\x0D"
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: c === 0x65 /* e */
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? "\x1B"
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: c === 0x20 /* Space */
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? " "
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: c === 0x22 /* " */
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? "\x22"
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: c === 0x2f /* / */
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? "/"
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: c === 0x5c /* \ */
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? "\x5C"
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: c === 0x4e /* N */
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? "\x85"
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: c === 0x5f /* _ */
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? "\xA0"
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: c === 0x4c /* L */
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? "\u2028"
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: c === 0x50 /* P */
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? "\u2029"
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: "";
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/* eslint:enable:prettier */
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}
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function charFromCodepoint(c: number): string {
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if (c <= 0xffff) {
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return String.fromCharCode(c);
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}
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// Encode UTF-16 surrogate pair
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// https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
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return String.fromCharCode(
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((c - 0x010000) >> 10) + 0xd800,
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((c - 0x010000) & 0x03ff) + 0xdc00
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);
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}
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const simpleEscapeCheck = new Array(256); // integer, for fast access
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const simpleEscapeMap = new Array(256);
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for (let i = 0; i < 256; i++) {
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simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
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simpleEscapeMap[i] = simpleEscapeSequence(i);
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}
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function generateError(state: LoaderState, message: string): YAMLError {
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return new YAMLError(
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message,
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new Mark(
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state.filename as string,
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state.input,
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state.position,
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state.line,
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state.position - state.lineStart
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)
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);
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}
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function throwError(state: LoaderState, message: string): never {
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throw generateError(state, message);
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}
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function throwWarning(state: LoaderState, message: string): void {
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if (state.onWarning) {
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state.onWarning.call(null, generateError(state, message));
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}
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}
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interface DirectiveHandlers {
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[directive: string]: (
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state: LoaderState,
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name: string,
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...args: string[]
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) => void;
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}
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const directiveHandlers: DirectiveHandlers = {
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YAML(state, _name, ...args: string[]) {
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if (state.version !== null) {
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return throwError(state, "duplication of %YAML directive");
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}
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if (args.length !== 1) {
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return throwError(state, "YAML directive accepts exactly one argument");
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}
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const match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
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if (match === null) {
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return throwError(state, "ill-formed argument of the YAML directive");
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}
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const major = parseInt(match[1], 10);
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const minor = parseInt(match[2], 10);
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if (major !== 1) {
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return throwError(state, "unacceptable YAML version of the document");
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}
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state.version = args[0];
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state.checkLineBreaks = minor < 2;
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if (minor !== 1 && minor !== 2) {
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return throwWarning(state, "unsupported YAML version of the document");
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}
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},
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TAG(state, _name, ...args: string[]): void {
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if (args.length !== 2) {
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return throwError(state, "TAG directive accepts exactly two arguments");
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}
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const handle = args[0];
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const prefix = args[1];
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if (!PATTERN_TAG_HANDLE.test(handle)) {
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return throwError(
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state,
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"ill-formed tag handle (first argument) of the TAG directive"
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);
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}
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if (_hasOwnProperty.call(state.tagMap, handle)) {
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return throwError(
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state,
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`there is a previously declared suffix for "${handle}" tag handle`
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);
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}
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if (!PATTERN_TAG_URI.test(prefix)) {
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return throwError(
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state,
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"ill-formed tag prefix (second argument) of the TAG directive"
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);
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}
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if (typeof state.tagMap === "undefined") {
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state.tagMap = {};
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}
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state.tagMap[handle] = prefix;
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}
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};
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function captureSegment(
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state: LoaderState,
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start: number,
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end: number,
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checkJson: boolean
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): void {
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let result: string;
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if (start < end) {
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result = state.input.slice(start, end);
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if (checkJson) {
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for (
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let position = 0, length = result.length;
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position < length;
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position++
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) {
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const character = result.charCodeAt(position);
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if (
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!(character === 0x09 || (0x20 <= character && character <= 0x10ffff))
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) {
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return throwError(state, "expected valid JSON character");
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}
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}
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} else if (PATTERN_NON_PRINTABLE.test(result)) {
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return throwError(state, "the stream contains non-printable characters");
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}
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state.result += result;
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}
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}
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function mergeMappings(
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state: LoaderState,
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destination: ArrayObject,
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source: ArrayObject,
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overridableKeys: ArrayObject<boolean>
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): void {
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if (!common.isObject(source)) {
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return throwError(
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state,
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"cannot merge mappings; the provided source object is unacceptable"
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);
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}
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const keys = Object.keys(source);
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for (let i = 0, len = keys.length; i < len; i++) {
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const key = keys[i];
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if (!_hasOwnProperty.call(destination, key)) {
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destination[key] = (source as ArrayObject)[key];
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overridableKeys[key] = true;
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}
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}
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}
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function storeMappingPair(
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state: LoaderState,
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result: ArrayObject | null,
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overridableKeys: ArrayObject<boolean>,
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keyTag: string | null,
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keyNode: Any,
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valueNode: unknown,
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startLine?: number,
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startPos?: number
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): ArrayObject {
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// The output is a plain object here, so keys can only be strings.
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// We need to convert keyNode to a string, but doing so can hang the process
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// (deeply nested arrays that explode exponentially using aliases).
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if (Array.isArray(keyNode)) {
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keyNode = Array.prototype.slice.call(keyNode);
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for (let index = 0, quantity = keyNode.length; index < quantity; index++) {
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if (Array.isArray(keyNode[index])) {
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return throwError(state, "nested arrays are not supported inside keys");
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}
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if (
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typeof keyNode === "object" &&
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_class(keyNode[index]) === "[object Object]"
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) {
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keyNode[index] = "[object Object]";
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}
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}
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}
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// Avoid code execution in load() via toString property
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// (still use its own toString for arrays, timestamps,
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// and whatever user schema extensions happen to have @@toStringTag)
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if (typeof keyNode === "object" && _class(keyNode) === "[object Object]") {
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keyNode = "[object Object]";
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}
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keyNode = String(keyNode);
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if (result === null) {
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result = {};
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}
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if (keyTag === "tag:yaml.org,2002:merge") {
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if (Array.isArray(valueNode)) {
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for (
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let index = 0, quantity = valueNode.length;
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index < quantity;
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index++
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) {
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mergeMappings(state, result, valueNode[index], overridableKeys);
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}
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} else {
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mergeMappings(state, result, valueNode as ArrayObject, overridableKeys);
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}
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} else {
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if (
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!state.json &&
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!_hasOwnProperty.call(overridableKeys, keyNode) &&
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_hasOwnProperty.call(result, keyNode)
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) {
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state.line = startLine || state.line;
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state.position = startPos || state.position;
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return throwError(state, "duplicated mapping key");
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}
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result[keyNode] = valueNode;
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delete overridableKeys[keyNode];
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}
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return result;
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}
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function readLineBreak(state: LoaderState): void {
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const ch = state.input.charCodeAt(state.position);
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if (ch === 0x0a /* LF */) {
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state.position++;
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} else if (ch === 0x0d /* CR */) {
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state.position++;
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if (state.input.charCodeAt(state.position) === 0x0a /* LF */) {
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state.position++;
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}
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} else {
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return throwError(state, "a line break is expected");
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}
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state.line += 1;
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state.lineStart = state.position;
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}
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function skipSeparationSpace(
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state: LoaderState,
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allowComments: boolean,
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checkIndent: number
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): number {
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let lineBreaks = 0,
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ch = state.input.charCodeAt(state.position);
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while (ch !== 0) {
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while (isWhiteSpace(ch)) {
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ch = state.input.charCodeAt(++state.position);
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}
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if (allowComments && ch === 0x23 /* # */) {
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do {
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ch = state.input.charCodeAt(++state.position);
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} while (ch !== 0x0a /* LF */ && ch !== 0x0d /* CR */ && ch !== 0);
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}
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if (isEOL(ch)) {
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readLineBreak(state);
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ch = state.input.charCodeAt(state.position);
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lineBreaks++;
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state.lineIndent = 0;
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while (ch === 0x20 /* Space */) {
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state.lineIndent++;
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ch = state.input.charCodeAt(++state.position);
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}
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} else {
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break;
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}
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}
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if (
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checkIndent !== -1 &&
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lineBreaks !== 0 &&
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state.lineIndent < checkIndent
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) {
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throwWarning(state, "deficient indentation");
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}
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return lineBreaks;
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}
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function testDocumentSeparator(state: LoaderState): boolean {
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let _position = state.position;
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let ch = state.input.charCodeAt(_position);
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// Condition state.position === state.lineStart is tested
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// in parent on each call, for efficiency. No needs to test here again.
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if (
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(ch === 0x2d /* - */ || ch === 0x2e) /* . */ &&
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ch === state.input.charCodeAt(_position + 1) &&
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ch === state.input.charCodeAt(_position + 2)
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) {
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_position += 3;
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ch = state.input.charCodeAt(_position);
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if (ch === 0 || isWsOrEol(ch)) {
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return true;
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}
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}
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return false;
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}
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function writeFoldedLines(state: LoaderState, count: number): void {
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if (count === 1) {
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state.result += " ";
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} else if (count > 1) {
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state.result += common.repeat("\n", count - 1);
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}
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}
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function readPlainScalar(
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state: LoaderState,
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nodeIndent: number,
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withinFlowCollection: boolean
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): boolean {
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const kind = state.kind;
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const result = state.result;
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let ch = state.input.charCodeAt(state.position);
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if (
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isWsOrEol(ch) ||
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isFlowIndicator(ch) ||
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ch === 0x23 /* # */ ||
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ch === 0x26 /* & */ ||
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ch === 0x2a /* * */ ||
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ch === 0x21 /* ! */ ||
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ch === 0x7c /* | */ ||
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ch === 0x3e /* > */ ||
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ch === 0x27 /* ' */ ||
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ch === 0x22 /* " */ ||
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ch === 0x25 /* % */ ||
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ch === 0x40 /* @ */ ||
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ch === 0x60 /* ` */
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) {
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return false;
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}
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|
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let following: number;
|
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if (ch === 0x3f /* ? */ || ch === 0x2d /* - */) {
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following = state.input.charCodeAt(state.position + 1);
|
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|
|
if (
|
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isWsOrEol(following) ||
|
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(withinFlowCollection && isFlowIndicator(following))
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) {
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return false;
|
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}
|
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}
|
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|
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state.kind = "scalar";
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state.result = "";
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let captureEnd: number,
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captureStart = (captureEnd = state.position);
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let hasPendingContent = false;
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let line = 0;
|
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while (ch !== 0) {
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if (ch === 0x3a /* : */) {
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following = state.input.charCodeAt(state.position + 1);
|
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|
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if (
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isWsOrEol(following) ||
|
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(withinFlowCollection && isFlowIndicator(following))
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) {
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break;
|
|
}
|
|
} else if (ch === 0x23 /* # */) {
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|
const preceding = state.input.charCodeAt(state.position - 1);
|
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|
|
if (isWsOrEol(preceding)) {
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break;
|
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}
|
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} else if (
|
|
(state.position === state.lineStart && testDocumentSeparator(state)) ||
|
|
(withinFlowCollection && isFlowIndicator(ch))
|
|
) {
|
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break;
|
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} else if (isEOL(ch)) {
|
|
line = state.line;
|
|
const lineStart = state.lineStart;
|
|
const lineIndent = state.lineIndent;
|
|
skipSeparationSpace(state, false, -1);
|
|
|
|
if (state.lineIndent >= nodeIndent) {
|
|
hasPendingContent = true;
|
|
ch = state.input.charCodeAt(state.position);
|
|
continue;
|
|
} else {
|
|
state.position = captureEnd;
|
|
state.line = line;
|
|
state.lineStart = lineStart;
|
|
state.lineIndent = lineIndent;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasPendingContent) {
|
|
captureSegment(state, captureStart, captureEnd, false);
|
|
writeFoldedLines(state, state.line - line);
|
|
captureStart = captureEnd = state.position;
|
|
hasPendingContent = false;
|
|
}
|
|
|
|
if (!isWhiteSpace(ch)) {
|
|
captureEnd = state.position + 1;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
captureSegment(state, captureStart, captureEnd, false);
|
|
|
|
if (state.result) {
|
|
return true;
|
|
}
|
|
|
|
state.kind = kind;
|
|
state.result = result;
|
|
return false;
|
|
}
|
|
|
|
function readSingleQuotedScalar(
|
|
state: LoaderState,
|
|
nodeIndent: number
|
|
): boolean {
|
|
let ch, captureStart, captureEnd;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x27 /* ' */) {
|
|
return false;
|
|
}
|
|
|
|
state.kind = "scalar";
|
|
state.result = "";
|
|
state.position++;
|
|
captureStart = captureEnd = state.position;
|
|
|
|
while ((ch = state.input.charCodeAt(state.position)) !== 0) {
|
|
if (ch === 0x27 /* ' */) {
|
|
captureSegment(state, captureStart, state.position, true);
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (ch === 0x27 /* ' */) {
|
|
captureStart = state.position;
|
|
state.position++;
|
|
captureEnd = state.position;
|
|
} else {
|
|
return true;
|
|
}
|
|
} else if (isEOL(ch)) {
|
|
captureSegment(state, captureStart, captureEnd, true);
|
|
writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
|
|
captureStart = captureEnd = state.position;
|
|
} else if (
|
|
state.position === state.lineStart &&
|
|
testDocumentSeparator(state)
|
|
) {
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the document within a single quoted scalar"
|
|
);
|
|
} else {
|
|
state.position++;
|
|
captureEnd = state.position;
|
|
}
|
|
}
|
|
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the stream within a single quoted scalar"
|
|
);
|
|
}
|
|
|
|
function readDoubleQuotedScalar(
|
|
state: LoaderState,
|
|
nodeIndent: number
|
|
): boolean {
|
|
let ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x22 /* " */) {
|
|
return false;
|
|
}
|
|
|
|
state.kind = "scalar";
|
|
state.result = "";
|
|
state.position++;
|
|
let captureEnd: number,
|
|
captureStart = (captureEnd = state.position);
|
|
let tmp: number;
|
|
while ((ch = state.input.charCodeAt(state.position)) !== 0) {
|
|
if (ch === 0x22 /* " */) {
|
|
captureSegment(state, captureStart, state.position, true);
|
|
state.position++;
|
|
return true;
|
|
}
|
|
if (ch === 0x5c /* \ */) {
|
|
captureSegment(state, captureStart, state.position, true);
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (isEOL(ch)) {
|
|
skipSeparationSpace(state, false, nodeIndent);
|
|
|
|
// TODO: rework to inline fn with no type cast?
|
|
} else if (ch < 256 && simpleEscapeCheck[ch]) {
|
|
state.result += simpleEscapeMap[ch];
|
|
state.position++;
|
|
} else if ((tmp = escapedHexLen(ch)) > 0) {
|
|
let hexLength = tmp;
|
|
let hexResult = 0;
|
|
|
|
for (; hexLength > 0; hexLength--) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if ((tmp = fromHexCode(ch)) >= 0) {
|
|
hexResult = (hexResult << 4) + tmp;
|
|
} else {
|
|
return throwError(state, "expected hexadecimal character");
|
|
}
|
|
}
|
|
|
|
state.result += charFromCodepoint(hexResult);
|
|
|
|
state.position++;
|
|
} else {
|
|
return throwError(state, "unknown escape sequence");
|
|
}
|
|
|
|
captureStart = captureEnd = state.position;
|
|
} else if (isEOL(ch)) {
|
|
captureSegment(state, captureStart, captureEnd, true);
|
|
writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
|
|
captureStart = captureEnd = state.position;
|
|
} else if (
|
|
state.position === state.lineStart &&
|
|
testDocumentSeparator(state)
|
|
) {
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the document within a double quoted scalar"
|
|
);
|
|
} else {
|
|
state.position++;
|
|
captureEnd = state.position;
|
|
}
|
|
}
|
|
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the stream within a double quoted scalar"
|
|
);
|
|
}
|
|
|
|
function readFlowCollection(state: LoaderState, nodeIndent: number): boolean {
|
|
let ch = state.input.charCodeAt(state.position);
|
|
let terminator: number;
|
|
let isMapping = true;
|
|
let result: ResultType = {};
|
|
if (ch === 0x5b /* [ */) {
|
|
terminator = 0x5d; /* ] */
|
|
isMapping = false;
|
|
result = [];
|
|
} else if (ch === 0x7b /* { */) {
|
|
terminator = 0x7d; /* } */
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
if (
|
|
state.anchor !== null &&
|
|
typeof state.anchor != "undefined" &&
|
|
typeof state.anchorMap != "undefined"
|
|
) {
|
|
state.anchorMap[state.anchor] = result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
const tag = state.tag,
|
|
anchor = state.anchor;
|
|
let readNext = true;
|
|
let valueNode,
|
|
keyNode,
|
|
keyTag: string | null = (keyNode = valueNode = null),
|
|
isExplicitPair: boolean,
|
|
isPair = (isExplicitPair = false);
|
|
let following = 0,
|
|
line = 0;
|
|
const overridableKeys: ArrayObject<boolean> = {};
|
|
while (ch !== 0) {
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch === terminator) {
|
|
state.position++;
|
|
state.tag = tag;
|
|
state.anchor = anchor;
|
|
state.kind = isMapping ? "mapping" : "sequence";
|
|
state.result = result;
|
|
return true;
|
|
}
|
|
if (!readNext) {
|
|
return throwError(state, "missed comma between flow collection entries");
|
|
}
|
|
|
|
keyTag = keyNode = valueNode = null;
|
|
isPair = isExplicitPair = false;
|
|
|
|
if (ch === 0x3f /* ? */) {
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
|
|
if (isWsOrEol(following)) {
|
|
isPair = isExplicitPair = true;
|
|
state.position++;
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
}
|
|
}
|
|
|
|
line = state.line;
|
|
// eslint-disable-next-line @typescript-eslint/no-use-before-define
|
|
composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
|
|
keyTag = state.tag || null;
|
|
keyNode = state.result;
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if ((isExplicitPair || state.line === line) && ch === 0x3a /* : */) {
|
|
isPair = true;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
// eslint-disable-next-line @typescript-eslint/no-use-before-define
|
|
composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
|
|
valueNode = state.result;
|
|
}
|
|
|
|
if (isMapping) {
|
|
storeMappingPair(
|
|
state,
|
|
result,
|
|
overridableKeys,
|
|
keyTag,
|
|
keyNode,
|
|
valueNode
|
|
);
|
|
} else if (isPair) {
|
|
(result as Array<{}>).push(
|
|
storeMappingPair(
|
|
state,
|
|
null,
|
|
overridableKeys,
|
|
keyTag,
|
|
keyNode,
|
|
valueNode
|
|
)
|
|
);
|
|
} else {
|
|
(result as ResultType[]).push(keyNode as ResultType);
|
|
}
|
|
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch === 0x2c /* , */) {
|
|
readNext = true;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} else {
|
|
readNext = false;
|
|
}
|
|
}
|
|
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the stream within a flow collection"
|
|
);
|
|
}
|
|
|
|
function readBlockScalar(state: LoaderState, nodeIndent: number): boolean {
|
|
let chomping = CHOMPING_CLIP,
|
|
didReadContent = false,
|
|
detectedIndent = false,
|
|
textIndent = nodeIndent,
|
|
emptyLines = 0,
|
|
atMoreIndented = false;
|
|
|
|
let ch = state.input.charCodeAt(state.position);
|
|
|
|
let folding = false;
|
|
if (ch === 0x7c /* | */) {
|
|
folding = false;
|
|
} else if (ch === 0x3e /* > */) {
|
|
folding = true;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
state.kind = "scalar";
|
|
state.result = "";
|
|
|
|
let tmp = 0;
|
|
while (ch !== 0) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (ch === 0x2b /* + */ || ch === 0x2d /* - */) {
|
|
if (CHOMPING_CLIP === chomping) {
|
|
chomping = ch === 0x2b /* + */ ? CHOMPING_KEEP : CHOMPING_STRIP;
|
|
} else {
|
|
return throwError(state, "repeat of a chomping mode identifier");
|
|
}
|
|
} else if ((tmp = fromDecimalCode(ch)) >= 0) {
|
|
if (tmp === 0) {
|
|
return throwError(
|
|
state,
|
|
"bad explicit indentation width of a block scalar; it cannot be less than one"
|
|
);
|
|
} else if (!detectedIndent) {
|
|
textIndent = nodeIndent + tmp - 1;
|
|
detectedIndent = true;
|
|
} else {
|
|
return throwError(state, "repeat of an indentation width identifier");
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (isWhiteSpace(ch)) {
|
|
do {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} while (isWhiteSpace(ch));
|
|
|
|
if (ch === 0x23 /* # */) {
|
|
do {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} while (!isEOL(ch) && ch !== 0);
|
|
}
|
|
}
|
|
|
|
while (ch !== 0) {
|
|
readLineBreak(state);
|
|
state.lineIndent = 0;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (
|
|
(!detectedIndent || state.lineIndent < textIndent) &&
|
|
ch === 0x20 /* Space */
|
|
) {
|
|
state.lineIndent++;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (!detectedIndent && state.lineIndent > textIndent) {
|
|
textIndent = state.lineIndent;
|
|
}
|
|
|
|
if (isEOL(ch)) {
|
|
emptyLines++;
|
|
continue;
|
|
}
|
|
|
|
// End of the scalar.
|
|
if (state.lineIndent < textIndent) {
|
|
// Perform the chomping.
|
|
if (chomping === CHOMPING_KEEP) {
|
|
state.result += common.repeat(
|
|
"\n",
|
|
didReadContent ? 1 + emptyLines : emptyLines
|
|
);
|
|
} else if (chomping === CHOMPING_CLIP) {
|
|
if (didReadContent) {
|
|
// i.e. only if the scalar is not empty.
|
|
state.result += "\n";
|
|
}
|
|
}
|
|
|
|
// Break this `while` cycle and go to the funciton's epilogue.
|
|
break;
|
|
}
|
|
|
|
// Folded style: use fancy rules to handle line breaks.
|
|
if (folding) {
|
|
// Lines starting with white space characters (more-indented lines) are not folded.
|
|
if (isWhiteSpace(ch)) {
|
|
atMoreIndented = true;
|
|
// except for the first content line (cf. Example 8.1)
|
|
state.result += common.repeat(
|
|
"\n",
|
|
didReadContent ? 1 + emptyLines : emptyLines
|
|
);
|
|
|
|
// End of more-indented block.
|
|
} else if (atMoreIndented) {
|
|
atMoreIndented = false;
|
|
state.result += common.repeat("\n", emptyLines + 1);
|
|
|
|
// Just one line break - perceive as the same line.
|
|
} else if (emptyLines === 0) {
|
|
if (didReadContent) {
|
|
// i.e. only if we have already read some scalar content.
|
|
state.result += " ";
|
|
}
|
|
|
|
// Several line breaks - perceive as different lines.
|
|
} else {
|
|
state.result += common.repeat("\n", emptyLines);
|
|
}
|
|
|
|
// Literal style: just add exact number of line breaks between content lines.
|
|
} else {
|
|
// Keep all line breaks except the header line break.
|
|
state.result += common.repeat(
|
|
"\n",
|
|
didReadContent ? 1 + emptyLines : emptyLines
|
|
);
|
|
}
|
|
|
|
didReadContent = true;
|
|
detectedIndent = true;
|
|
emptyLines = 0;
|
|
const captureStart = state.position;
|
|
|
|
while (!isEOL(ch) && ch !== 0) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
captureSegment(state, captureStart, state.position, false);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function readBlockSequence(state: LoaderState, nodeIndent: number): boolean {
|
|
let line: number,
|
|
following: number,
|
|
detected = false,
|
|
ch: number;
|
|
const tag = state.tag,
|
|
anchor = state.anchor,
|
|
result: unknown[] = [];
|
|
|
|
if (
|
|
state.anchor !== null &&
|
|
typeof state.anchor !== "undefined" &&
|
|
typeof state.anchorMap !== "undefined"
|
|
) {
|
|
state.anchorMap[state.anchor] = result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (ch !== 0) {
|
|
if (ch !== 0x2d /* - */) {
|
|
break;
|
|
}
|
|
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
|
|
if (!isWsOrEol(following)) {
|
|
break;
|
|
}
|
|
|
|
detected = true;
|
|
state.position++;
|
|
|
|
if (skipSeparationSpace(state, true, -1)) {
|
|
if (state.lineIndent <= nodeIndent) {
|
|
result.push(null);
|
|
ch = state.input.charCodeAt(state.position);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
line = state.line;
|
|
// eslint-disable-next-line @typescript-eslint/no-use-before-define
|
|
composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
|
|
result.push(state.result);
|
|
skipSeparationSpace(state, true, -1);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if ((state.line === line || state.lineIndent > nodeIndent) && ch !== 0) {
|
|
return throwError(state, "bad indentation of a sequence entry");
|
|
} else if (state.lineIndent < nodeIndent) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (detected) {
|
|
state.tag = tag;
|
|
state.anchor = anchor;
|
|
state.kind = "sequence";
|
|
state.result = result;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function readBlockMapping(
|
|
state: LoaderState,
|
|
nodeIndent: number,
|
|
flowIndent: number
|
|
): boolean {
|
|
const tag = state.tag,
|
|
anchor = state.anchor,
|
|
result = {},
|
|
overridableKeys = {};
|
|
let following: number,
|
|
allowCompact = false,
|
|
line: number,
|
|
pos: number,
|
|
keyTag = null,
|
|
keyNode = null,
|
|
valueNode = null,
|
|
atExplicitKey = false,
|
|
detected = false,
|
|
ch: number;
|
|
|
|
if (
|
|
state.anchor !== null &&
|
|
typeof state.anchor !== "undefined" &&
|
|
typeof state.anchorMap !== "undefined"
|
|
) {
|
|
state.anchorMap[state.anchor] = result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (ch !== 0) {
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
line = state.line; // Save the current line.
|
|
pos = state.position;
|
|
|
|
//
|
|
// Explicit notation case. There are two separate blocks:
|
|
// first for the key (denoted by "?") and second for the value (denoted by ":")
|
|
//
|
|
if ((ch === 0x3f /* ? */ || ch === 0x3a) /* : */ && isWsOrEol(following)) {
|
|
if (ch === 0x3f /* ? */) {
|
|
if (atExplicitKey) {
|
|
storeMappingPair(
|
|
state,
|
|
result,
|
|
overridableKeys,
|
|
keyTag as string,
|
|
keyNode,
|
|
null
|
|
);
|
|
keyTag = keyNode = valueNode = null;
|
|
}
|
|
|
|
detected = true;
|
|
atExplicitKey = true;
|
|
allowCompact = true;
|
|
} else if (atExplicitKey) {
|
|
// i.e. 0x3A/* : */ === character after the explicit key.
|
|
atExplicitKey = false;
|
|
allowCompact = true;
|
|
} else {
|
|
return throwError(
|
|
state,
|
|
"incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line"
|
|
);
|
|
}
|
|
|
|
state.position += 1;
|
|
ch = following;
|
|
|
|
//
|
|
// Implicit notation case. Flow-style node as the key first, then ":", and the value.
|
|
//
|
|
// eslint-disable-next-line @typescript-eslint/no-use-before-define
|
|
} else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
|
|
if (state.line === line) {
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (isWhiteSpace(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (ch === 0x3a /* : */) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (!isWsOrEol(ch)) {
|
|
return throwError(
|
|
state,
|
|
"a whitespace character is expected after the key-value separator within a block mapping"
|
|
);
|
|
}
|
|
|
|
if (atExplicitKey) {
|
|
storeMappingPair(
|
|
state,
|
|
result,
|
|
overridableKeys,
|
|
keyTag as string,
|
|
keyNode,
|
|
null
|
|
);
|
|
keyTag = keyNode = valueNode = null;
|
|
}
|
|
|
|
detected = true;
|
|
atExplicitKey = false;
|
|
allowCompact = false;
|
|
keyTag = state.tag;
|
|
keyNode = state.result;
|
|
} else if (detected) {
|
|
return throwError(
|
|
state,
|
|
"can not read an implicit mapping pair; a colon is missed"
|
|
);
|
|
} else {
|
|
state.tag = tag;
|
|
state.anchor = anchor;
|
|
return true; // Keep the result of `composeNode`.
|
|
}
|
|
} else if (detected) {
|
|
return throwError(
|
|
state,
|
|
"can not read a block mapping entry; a multiline key may not be an implicit key"
|
|
);
|
|
} else {
|
|
state.tag = tag;
|
|
state.anchor = anchor;
|
|
return true; // Keep the result of `composeNode`.
|
|
}
|
|
} else {
|
|
break; // Reading is done. Go to the epilogue.
|
|
}
|
|
|
|
//
|
|
// Common reading code for both explicit and implicit notations.
|
|
//
|
|
if (state.line === line || state.lineIndent > nodeIndent) {
|
|
if (
|
|
// eslint-disable-next-line @typescript-eslint/no-use-before-define
|
|
composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)
|
|
) {
|
|
if (atExplicitKey) {
|
|
keyNode = state.result;
|
|
} else {
|
|
valueNode = state.result;
|
|
}
|
|
}
|
|
|
|
if (!atExplicitKey) {
|
|
storeMappingPair(
|
|
state,
|
|
result,
|
|
overridableKeys,
|
|
keyTag as string,
|
|
keyNode,
|
|
valueNode,
|
|
line,
|
|
pos
|
|
);
|
|
keyTag = keyNode = valueNode = null;
|
|
}
|
|
|
|
skipSeparationSpace(state, true, -1);
|
|
ch = state.input.charCodeAt(state.position);
|
|
}
|
|
|
|
if (state.lineIndent > nodeIndent && ch !== 0) {
|
|
return throwError(state, "bad indentation of a mapping entry");
|
|
} else if (state.lineIndent < nodeIndent) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Epilogue.
|
|
//
|
|
|
|
// Special case: last mapping's node contains only the key in explicit notation.
|
|
if (atExplicitKey) {
|
|
storeMappingPair(
|
|
state,
|
|
result,
|
|
overridableKeys,
|
|
keyTag as string,
|
|
keyNode,
|
|
null
|
|
);
|
|
}
|
|
|
|
// Expose the resulting mapping.
|
|
if (detected) {
|
|
state.tag = tag;
|
|
state.anchor = anchor;
|
|
state.kind = "mapping";
|
|
state.result = result;
|
|
}
|
|
|
|
return detected;
|
|
}
|
|
|
|
function readTagProperty(state: LoaderState): boolean {
|
|
let position: number,
|
|
isVerbatim = false,
|
|
isNamed = false,
|
|
tagHandle = "",
|
|
tagName: string,
|
|
ch: number;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x21 /* ! */) return false;
|
|
|
|
if (state.tag !== null) {
|
|
return throwError(state, "duplication of a tag property");
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (ch === 0x3c /* < */) {
|
|
isVerbatim = true;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} else if (ch === 0x21 /* ! */) {
|
|
isNamed = true;
|
|
tagHandle = "!!";
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} else {
|
|
tagHandle = "!";
|
|
}
|
|
|
|
position = state.position;
|
|
|
|
if (isVerbatim) {
|
|
do {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} while (ch !== 0 && ch !== 0x3e /* > */);
|
|
|
|
if (state.position < state.length) {
|
|
tagName = state.input.slice(position, state.position);
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} else {
|
|
return throwError(
|
|
state,
|
|
"unexpected end of the stream within a verbatim tag"
|
|
);
|
|
}
|
|
} else {
|
|
while (ch !== 0 && !isWsOrEol(ch)) {
|
|
if (ch === 0x21 /* ! */) {
|
|
if (!isNamed) {
|
|
tagHandle = state.input.slice(position - 1, state.position + 1);
|
|
|
|
if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
|
|
return throwError(
|
|
state,
|
|
"named tag handle cannot contain such characters"
|
|
);
|
|
}
|
|
|
|
isNamed = true;
|
|
position = state.position + 1;
|
|
} else {
|
|
return throwError(
|
|
state,
|
|
"tag suffix cannot contain exclamation marks"
|
|
);
|
|
}
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
tagName = state.input.slice(position, state.position);
|
|
|
|
if (PATTERN_FLOW_INDICATORS.test(tagName)) {
|
|
return throwError(
|
|
state,
|
|
"tag suffix cannot contain flow indicator characters"
|
|
);
|
|
}
|
|
}
|
|
|
|
if (tagName && !PATTERN_TAG_URI.test(tagName)) {
|
|
return throwError(
|
|
state,
|
|
`tag name cannot contain such characters: ${tagName}`
|
|
);
|
|
}
|
|
|
|
if (isVerbatim) {
|
|
state.tag = tagName;
|
|
} else if (
|
|
typeof state.tagMap !== "undefined" &&
|
|
_hasOwnProperty.call(state.tagMap, tagHandle)
|
|
) {
|
|
state.tag = state.tagMap[tagHandle] + tagName;
|
|
} else if (tagHandle === "!") {
|
|
state.tag = `!${tagName}`;
|
|
} else if (tagHandle === "!!") {
|
|
state.tag = `tag:yaml.org,2002:${tagName}`;
|
|
} else {
|
|
return throwError(state, `undeclared tag handle "${tagHandle}"`);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function readAnchorProperty(state: LoaderState): boolean {
|
|
let ch = state.input.charCodeAt(state.position);
|
|
if (ch !== 0x26 /* & */) return false;
|
|
|
|
if (state.anchor !== null) {
|
|
return throwError(state, "duplication of an anchor property");
|
|
}
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
const position = state.position;
|
|
while (ch !== 0 && !isWsOrEol(ch) && !isFlowIndicator(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (state.position === position) {
|
|
return throwError(
|
|
state,
|
|
"name of an anchor node must contain at least one character"
|
|
);
|
|
}
|
|
|
|
state.anchor = state.input.slice(position, state.position);
|
|
return true;
|
|
}
|
|
|
|
function readAlias(state: LoaderState): boolean {
|
|
let ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x2a /* * */) return false;
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
const _position = state.position;
|
|
|
|
while (ch !== 0 && !isWsOrEol(ch) && !isFlowIndicator(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (state.position === _position) {
|
|
return throwError(
|
|
state,
|
|
"name of an alias node must contain at least one character"
|
|
);
|
|
}
|
|
|
|
const alias = state.input.slice(_position, state.position);
|
|
if (
|
|
typeof state.anchorMap !== "undefined" &&
|
|
!state.anchorMap.hasOwnProperty(alias)
|
|
) {
|
|
return throwError(state, `unidentified alias "${alias}"`);
|
|
}
|
|
|
|
if (typeof state.anchorMap !== "undefined") {
|
|
state.result = state.anchorMap[alias];
|
|
}
|
|
skipSeparationSpace(state, true, -1);
|
|
return true;
|
|
}
|
|
|
|
function composeNode(
|
|
state: LoaderState,
|
|
parentIndent: number,
|
|
nodeContext: number,
|
|
allowToSeek: boolean,
|
|
allowCompact: boolean
|
|
): boolean {
|
|
let allowBlockScalars: boolean,
|
|
allowBlockCollections: boolean,
|
|
indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
|
|
atNewLine = false,
|
|
hasContent = false,
|
|
type: Type,
|
|
flowIndent: number,
|
|
blockIndent: number;
|
|
|
|
if (state.listener && state.listener !== null) {
|
|
state.listener("open", state);
|
|
}
|
|
|
|
state.tag = null;
|
|
state.anchor = null;
|
|
state.kind = null;
|
|
state.result = null;
|
|
|
|
const allowBlockStyles = (allowBlockScalars = allowBlockCollections =
|
|
CONTEXT_BLOCK_OUT === nodeContext || CONTEXT_BLOCK_IN === nodeContext);
|
|
|
|
if (allowToSeek) {
|
|
if (skipSeparationSpace(state, true, -1)) {
|
|
atNewLine = true;
|
|
|
|
if (state.lineIndent > parentIndent) {
|
|
indentStatus = 1;
|
|
} else if (state.lineIndent === parentIndent) {
|
|
indentStatus = 0;
|
|
} else if (state.lineIndent < parentIndent) {
|
|
indentStatus = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (indentStatus === 1) {
|
|
while (readTagProperty(state) || readAnchorProperty(state)) {
|
|
if (skipSeparationSpace(state, true, -1)) {
|
|
atNewLine = true;
|
|
allowBlockCollections = allowBlockStyles;
|
|
|
|
if (state.lineIndent > parentIndent) {
|
|
indentStatus = 1;
|
|
} else if (state.lineIndent === parentIndent) {
|
|
indentStatus = 0;
|
|
} else if (state.lineIndent < parentIndent) {
|
|
indentStatus = -1;
|
|
}
|
|
} else {
|
|
allowBlockCollections = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (allowBlockCollections) {
|
|
allowBlockCollections = atNewLine || allowCompact;
|
|
}
|
|
|
|
if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
|
|
const cond =
|
|
CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext;
|
|
flowIndent = cond ? parentIndent : parentIndent + 1;
|
|
|
|
blockIndent = state.position - state.lineStart;
|
|
|
|
if (indentStatus === 1) {
|
|
if (
|
|
(allowBlockCollections &&
|
|
(readBlockSequence(state, blockIndent) ||
|
|
readBlockMapping(state, blockIndent, flowIndent))) ||
|
|
readFlowCollection(state, flowIndent)
|
|
) {
|
|
hasContent = true;
|
|
} else {
|
|
if (
|
|
(allowBlockScalars && readBlockScalar(state, flowIndent)) ||
|
|
readSingleQuotedScalar(state, flowIndent) ||
|
|
readDoubleQuotedScalar(state, flowIndent)
|
|
) {
|
|
hasContent = true;
|
|
} else if (readAlias(state)) {
|
|
hasContent = true;
|
|
|
|
if (state.tag !== null || state.anchor !== null) {
|
|
return throwError(
|
|
state,
|
|
"alias node should not have Any properties"
|
|
);
|
|
}
|
|
} else if (
|
|
readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)
|
|
) {
|
|
hasContent = true;
|
|
|
|
if (state.tag === null) {
|
|
state.tag = "?";
|
|
}
|
|
}
|
|
|
|
if (state.anchor !== null && typeof state.anchorMap !== "undefined") {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
}
|
|
} else if (indentStatus === 0) {
|
|
// Special case: block sequences are allowed to have same indentation level as the parent.
|
|
// http://www.yaml.org/spec/1.2/spec.html#id2799784
|
|
hasContent =
|
|
allowBlockCollections && readBlockSequence(state, blockIndent);
|
|
}
|
|
}
|
|
|
|
if (state.tag !== null && state.tag !== "!") {
|
|
if (state.tag === "?") {
|
|
for (
|
|
let typeIndex = 0, typeQuantity = state.implicitTypes.length;
|
|
typeIndex < typeQuantity;
|
|
typeIndex++
|
|
) {
|
|
type = state.implicitTypes[typeIndex];
|
|
|
|
// Implicit resolving is not allowed for non-scalar types, and '?'
|
|
// non-specific tag is only assigned to plain scalars. So, it isn't
|
|
// needed to check for 'kind' conformity.
|
|
|
|
if (type.resolve(state.result)) {
|
|
// `state.result` updated in resolver if matched
|
|
state.result = type.construct(state.result);
|
|
state.tag = type.tag;
|
|
if (state.anchor !== null && typeof state.anchorMap !== "undefined") {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
} else if (
|
|
_hasOwnProperty.call(state.typeMap[state.kind || "fallback"], state.tag)
|
|
) {
|
|
type = state.typeMap[state.kind || "fallback"][state.tag];
|
|
|
|
if (state.result !== null && type.kind !== state.kind) {
|
|
return throwError(
|
|
state,
|
|
`unacceptable node kind for !<${state.tag}> tag; it should be "${type.kind}", not "${state.kind}"`
|
|
);
|
|
}
|
|
|
|
if (!type.resolve(state.result)) {
|
|
// `state.result` updated in resolver if matched
|
|
return throwError(
|
|
state,
|
|
`cannot resolve a node with !<${state.tag}> explicit tag`
|
|
);
|
|
} else {
|
|
state.result = type.construct(state.result);
|
|
if (state.anchor !== null && typeof state.anchorMap !== "undefined") {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
}
|
|
} else {
|
|
return throwError(state, `unknown tag !<${state.tag}>`);
|
|
}
|
|
}
|
|
|
|
if (state.listener && state.listener !== null) {
|
|
state.listener("close", state);
|
|
}
|
|
return state.tag !== null || state.anchor !== null || hasContent;
|
|
}
|
|
|
|
function readDocument(state: LoaderState): void {
|
|
const documentStart = state.position;
|
|
let position: number,
|
|
directiveName: string,
|
|
directiveArgs: string[],
|
|
hasDirectives = false,
|
|
ch: number;
|
|
|
|
state.version = null;
|
|
state.checkLineBreaks = state.legacy;
|
|
state.tagMap = {};
|
|
state.anchorMap = {};
|
|
|
|
while ((ch = state.input.charCodeAt(state.position)) !== 0) {
|
|
skipSeparationSpace(state, true, -1);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (state.lineIndent > 0 || ch !== 0x25 /* % */) {
|
|
break;
|
|
}
|
|
|
|
hasDirectives = true;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
position = state.position;
|
|
|
|
while (ch !== 0 && !isWsOrEol(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
directiveName = state.input.slice(position, state.position);
|
|
directiveArgs = [];
|
|
|
|
if (directiveName.length < 1) {
|
|
return throwError(
|
|
state,
|
|
"directive name must not be less than one character in length"
|
|
);
|
|
}
|
|
|
|
while (ch !== 0) {
|
|
while (isWhiteSpace(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (ch === 0x23 /* # */) {
|
|
do {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} while (ch !== 0 && !isEOL(ch));
|
|
break;
|
|
}
|
|
|
|
if (isEOL(ch)) break;
|
|
|
|
position = state.position;
|
|
|
|
while (ch !== 0 && !isWsOrEol(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
directiveArgs.push(state.input.slice(position, state.position));
|
|
}
|
|
|
|
if (ch !== 0) readLineBreak(state);
|
|
|
|
if (_hasOwnProperty.call(directiveHandlers, directiveName)) {
|
|
directiveHandlers[directiveName](state, directiveName, ...directiveArgs);
|
|
} else {
|
|
throwWarning(state, `unknown document directive "${directiveName}"`);
|
|
}
|
|
}
|
|
|
|
skipSeparationSpace(state, true, -1);
|
|
|
|
if (
|
|
state.lineIndent === 0 &&
|
|
state.input.charCodeAt(state.position) === 0x2d /* - */ &&
|
|
state.input.charCodeAt(state.position + 1) === 0x2d /* - */ &&
|
|
state.input.charCodeAt(state.position + 2) === 0x2d /* - */
|
|
) {
|
|
state.position += 3;
|
|
skipSeparationSpace(state, true, -1);
|
|
} else if (hasDirectives) {
|
|
return throwError(state, "directives end mark is expected");
|
|
}
|
|
|
|
composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
|
|
skipSeparationSpace(state, true, -1);
|
|
|
|
if (
|
|
state.checkLineBreaks &&
|
|
PATTERN_NON_ASCII_LINE_BREAKS.test(
|
|
state.input.slice(documentStart, state.position)
|
|
)
|
|
) {
|
|
throwWarning(state, "non-ASCII line breaks are interpreted as content");
|
|
}
|
|
|
|
state.documents.push(state.result);
|
|
|
|
if (state.position === state.lineStart && testDocumentSeparator(state)) {
|
|
if (state.input.charCodeAt(state.position) === 0x2e /* . */) {
|
|
state.position += 3;
|
|
skipSeparationSpace(state, true, -1);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (state.position < state.length - 1) {
|
|
return throwError(
|
|
state,
|
|
"end of the stream or a document separator is expected"
|
|
);
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
function loadDocuments(input: string, options?: LoaderStateOptions): unknown[] {
|
|
input = String(input);
|
|
options = options || {};
|
|
|
|
if (input.length !== 0) {
|
|
// Add tailing `\n` if not exists
|
|
if (
|
|
input.charCodeAt(input.length - 1) !== 0x0a /* LF */ &&
|
|
input.charCodeAt(input.length - 1) !== 0x0d /* CR */
|
|
) {
|
|
input += "\n";
|
|
}
|
|
|
|
// Strip BOM
|
|
if (input.charCodeAt(0) === 0xfeff) {
|
|
input = input.slice(1);
|
|
}
|
|
}
|
|
|
|
const state = new LoaderState(input, options);
|
|
|
|
// Use 0 as string terminator. That significantly simplifies bounds check.
|
|
state.input += "\0";
|
|
|
|
while (state.input.charCodeAt(state.position) === 0x20 /* Space */) {
|
|
state.lineIndent += 1;
|
|
state.position += 1;
|
|
}
|
|
|
|
while (state.position < state.length - 1) {
|
|
readDocument(state);
|
|
}
|
|
|
|
return state.documents;
|
|
}
|
|
|
|
export type CbFunction = (doc: unknown) => void;
|
|
function isCbFunction(fn: unknown): fn is CbFunction {
|
|
return typeof fn === "function";
|
|
}
|
|
|
|
export function loadAll<T extends CbFunction | LoaderStateOptions>(
|
|
input: string,
|
|
iteratorOrOption?: T,
|
|
options?: LoaderStateOptions
|
|
): T extends CbFunction ? void : unknown[] {
|
|
if (!isCbFunction(iteratorOrOption)) {
|
|
return loadDocuments(input, iteratorOrOption as LoaderStateOptions) as Any;
|
|
}
|
|
|
|
const documents = loadDocuments(input, options);
|
|
const iterator = iteratorOrOption;
|
|
for (let index = 0, length = documents.length; index < length; index++) {
|
|
iterator(documents[index]);
|
|
}
|
|
|
|
return void 0 as Any;
|
|
}
|
|
|
|
export function load(input: string, options?: LoaderStateOptions): unknown {
|
|
const documents = loadDocuments(input, options);
|
|
|
|
if (documents.length === 0) {
|
|
return;
|
|
}
|
|
if (documents.length === 1) {
|
|
return documents[0];
|
|
}
|
|
throw new YAMLError(
|
|
"expected a single document in the stream, but found more"
|
|
);
|
|
}
|