1728 lines
46 KiB
JavaScript
1728 lines
46 KiB
JavaScript
'use strict';
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/*eslint-disable max-len,no-use-before-define*/
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var common = require('./common');
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var YAMLException = require('./exception');
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var makeSnippet = require('./snippet');
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var DEFAULT_SCHEMA = require('./schema/default');
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var _hasOwnProperty = Object.prototype.hasOwnProperty;
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var CONTEXT_FLOW_IN = 1;
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var CONTEXT_FLOW_OUT = 2;
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var CONTEXT_BLOCK_IN = 3;
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var CONTEXT_BLOCK_OUT = 4;
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var CHOMPING_CLIP = 1;
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var CHOMPING_STRIP = 2;
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var CHOMPING_KEEP = 3;
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var 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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var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
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var PATTERN_FLOW_INDICATORS = /[,\[\]\{\}]/;
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var PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\-]+!)$/i;
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var PATTERN_TAG_URI = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
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function _class(obj) { return Object.prototype.toString.call(obj); }
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function is_EOL(c) {
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return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
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}
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function is_WHITE_SPACE(c) {
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return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
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}
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function is_WS_OR_EOL(c) {
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return (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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function is_FLOW_INDICATOR(c) {
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return 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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function fromHexCode(c) {
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var lc;
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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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/*eslint-disable no-bitwise*/
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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) {
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if (c === 0x78/* x */) { return 2; }
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if (c === 0x75/* u */) { return 4; }
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if (c === 0x55/* U */) { return 8; }
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return 0;
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}
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function fromDecimalCode(c) {
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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) {
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/* eslint-disable indent */
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return (c === 0x30/* 0 */) ? '\x00' :
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(c === 0x61/* a */) ? '\x07' :
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(c === 0x62/* b */) ? '\x08' :
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(c === 0x74/* t */) ? '\x09' :
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(c === 0x09/* Tab */) ? '\x09' :
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(c === 0x6E/* n */) ? '\x0A' :
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(c === 0x76/* v */) ? '\x0B' :
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(c === 0x66/* f */) ? '\x0C' :
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(c === 0x72/* r */) ? '\x0D' :
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(c === 0x65/* e */) ? '\x1B' :
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(c === 0x20/* Space */) ? ' ' :
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(c === 0x22/* " */) ? '\x22' :
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(c === 0x2F/* / */) ? '/' :
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(c === 0x5C/* \ */) ? '\x5C' :
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(c === 0x4E/* N */) ? '\x85' :
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(c === 0x5F/* _ */) ? '\xA0' :
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(c === 0x4C/* L */) ? '\u2028' :
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(c === 0x50/* P */) ? '\u2029' : '';
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}
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function charFromCodepoint(c) {
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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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var simpleEscapeCheck = new Array(256); // integer, for fast access
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var simpleEscapeMap = new Array(256);
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for (var 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 State(input, options) {
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this.input = input;
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this.filename = options['filename'] || null;
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this.schema = options['schema'] || DEFAULT_SCHEMA;
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this.onWarning = options['onWarning'] || null;
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// (Hidden) Remove? makes the loader to expect YAML 1.1 documents
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// if such documents have no explicit %YAML directive
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this.legacy = options['legacy'] || false;
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this.json = options['json'] || false;
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this.listener = options['listener'] || null;
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this.implicitTypes = this.schema.compiledImplicit;
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this.typeMap = this.schema.compiledTypeMap;
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this.length = input.length;
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this.position = 0;
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this.line = 0;
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this.lineStart = 0;
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this.lineIndent = 0;
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// position of first leading tab in the current line,
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// used to make sure there are no tabs in the indentation
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this.firstTabInLine = -1;
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this.documents = [];
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/*
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this.version;
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this.checkLineBreaks;
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this.tagMap;
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this.anchorMap;
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this.tag;
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this.anchor;
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this.kind;
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this.result;*/
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}
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function generateError(state, message) {
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var mark = {
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name: state.filename,
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buffer: state.input.slice(0, -1), // omit trailing \0
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position: state.position,
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line: state.line,
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column: state.position - state.lineStart
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};
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mark.snippet = makeSnippet(mark);
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return new YAMLException(message, mark);
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}
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function throwError(state, message) {
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throw generateError(state, message);
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}
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function throwWarning(state, message) {
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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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var directiveHandlers = {
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YAML: function handleYamlDirective(state, name, args) {
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var match, major, minor;
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if (state.version !== null) {
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throwError(state, 'duplication of %YAML directive');
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}
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if (args.length !== 1) {
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throwError(state, 'YAML directive accepts exactly one argument');
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}
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match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
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if (match === null) {
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throwError(state, 'ill-formed argument of the YAML directive');
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}
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major = parseInt(match[1], 10);
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minor = parseInt(match[2], 10);
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if (major !== 1) {
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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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throwWarning(state, 'unsupported YAML version of the document');
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}
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},
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TAG: function handleTagDirective(state, name, args) {
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var handle, prefix;
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if (args.length !== 2) {
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throwError(state, 'TAG directive accepts exactly two arguments');
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}
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handle = args[0];
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prefix = args[1];
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if (!PATTERN_TAG_HANDLE.test(handle)) {
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throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
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}
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if (_hasOwnProperty.call(state.tagMap, handle)) {
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throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
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}
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if (!PATTERN_TAG_URI.test(prefix)) {
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throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
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}
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try {
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prefix = decodeURIComponent(prefix);
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} catch (err) {
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throwError(state, 'tag prefix is malformed: ' + prefix);
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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(state, start, end, checkJson) {
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var _position, _length, _character, _result;
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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 (_position = 0, _length = _result.length; _position < _length; _position += 1) {
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_character = _result.charCodeAt(_position);
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if (!(_character === 0x09 ||
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(0x20 <= _character && _character <= 0x10FFFF))) {
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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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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(state, destination, source, overridableKeys) {
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var sourceKeys, key, index, quantity;
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if (!common.isObject(source)) {
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throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
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}
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sourceKeys = Object.keys(source);
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for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
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key = sourceKeys[index];
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if (!_hasOwnProperty.call(destination, key)) {
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destination[key] = source[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(state, _result, overridableKeys, keyTag, keyNode, valueNode,
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startLine, startLineStart, startPos) {
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var index, quantity;
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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 (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
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if (Array.isArray(keyNode[index])) {
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throwError(state, 'nested arrays are not supported inside keys');
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}
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if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
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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 (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
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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, overridableKeys);
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}
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} else {
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if (!state.json &&
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!_hasOwnProperty.call(overridableKeys, keyNode) &&
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_hasOwnProperty.call(_result, keyNode)) {
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state.line = startLine || state.line;
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state.lineStart = startLineStart || state.lineStart;
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state.position = startPos || state.position;
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throwError(state, 'duplicated mapping key');
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}
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// used for this specific key only because Object.defineProperty is slow
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if (keyNode === '__proto__') {
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Object.defineProperty(_result, keyNode, {
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configurable: true,
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enumerable: true,
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writable: true,
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value: valueNode
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});
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} else {
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_result[keyNode] = valueNode;
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}
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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) {
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var ch;
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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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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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state.firstTabInLine = -1;
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}
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function skipSeparationSpace(state, allowComments, checkIndent) {
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var lineBreaks = 0,
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ch = state.input.charCodeAt(state.position);
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while (ch !== 0) {
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while (is_WHITE_SPACE(ch)) {
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if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
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state.firstTabInLine = state.position;
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}
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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 (is_EOL(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 (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
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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) {
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var _position = state.position,
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ch;
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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 ((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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_position += 3;
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ch = state.input.charCodeAt(_position);
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|
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if (ch === 0 || is_WS_OR_EOL(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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|
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function writeFoldedLines(state, count) {
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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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|
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function readPlainScalar(state, nodeIndent, withinFlowCollection) {
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var preceding,
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following,
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captureStart,
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captureEnd,
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hasPendingContent,
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_line,
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_lineStart,
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_lineIndent,
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_kind = state.kind,
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_result = state.result,
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ch;
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|
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ch = state.input.charCodeAt(state.position);
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if (is_WS_OR_EOL(ch) ||
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is_FLOW_INDICATOR(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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return false;
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}
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|
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if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
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following = state.input.charCodeAt(state.position + 1);
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|
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if (is_WS_OR_EOL(following) ||
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withinFlowCollection && is_FLOW_INDICATOR(following)) {
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return false;
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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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|
captureStart = captureEnd = state.position;
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|
hasPendingContent = false;
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|
|
while (ch !== 0) {
|
|
if (ch === 0x3A/* : */) {
|
|
following = state.input.charCodeAt(state.position + 1);
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|
|
if (is_WS_OR_EOL(following) ||
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withinFlowCollection && is_FLOW_INDICATOR(following)) {
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break;
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}
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|
|
} else if (ch === 0x23/* # */) {
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|
preceding = state.input.charCodeAt(state.position - 1);
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|
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if (is_WS_OR_EOL(preceding)) {
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break;
|
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}
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|
|
} else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
|
|
withinFlowCollection && is_FLOW_INDICATOR(ch)) {
|
|
break;
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|
|
} else if (is_EOL(ch)) {
|
|
_line = state.line;
|
|
_lineStart = state.lineStart;
|
|
_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 (!is_WHITE_SPACE(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, nodeIndent) {
|
|
var 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 (is_EOL(ch)) {
|
|
captureSegment(state, captureStart, captureEnd, true);
|
|
writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
|
|
captureStart = captureEnd = state.position;
|
|
|
|
} else if (state.position === state.lineStart && testDocumentSeparator(state)) {
|
|
throwError(state, 'unexpected end of the document within a single quoted scalar');
|
|
|
|
} else {
|
|
state.position++;
|
|
captureEnd = state.position;
|
|
}
|
|
}
|
|
|
|
throwError(state, 'unexpected end of the stream within a single quoted scalar');
|
|
}
|
|
|
|
function readDoubleQuotedScalar(state, nodeIndent) {
|
|
var captureStart,
|
|
captureEnd,
|
|
hexLength,
|
|
hexResult,
|
|
tmp,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x22/* " */) {
|
|
return false;
|
|
}
|
|
|
|
state.kind = 'scalar';
|
|
state.result = '';
|
|
state.position++;
|
|
captureStart = captureEnd = state.position;
|
|
|
|
while ((ch = state.input.charCodeAt(state.position)) !== 0) {
|
|
if (ch === 0x22/* " */) {
|
|
captureSegment(state, captureStart, state.position, true);
|
|
state.position++;
|
|
return true;
|
|
|
|
} else if (ch === 0x5C/* \ */) {
|
|
captureSegment(state, captureStart, state.position, true);
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (is_EOL(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) {
|
|
hexLength = tmp;
|
|
hexResult = 0;
|
|
|
|
for (; hexLength > 0; hexLength--) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if ((tmp = fromHexCode(ch)) >= 0) {
|
|
hexResult = (hexResult << 4) + tmp;
|
|
|
|
} else {
|
|
throwError(state, 'expected hexadecimal character');
|
|
}
|
|
}
|
|
|
|
state.result += charFromCodepoint(hexResult);
|
|
|
|
state.position++;
|
|
|
|
} else {
|
|
throwError(state, 'unknown escape sequence');
|
|
}
|
|
|
|
captureStart = captureEnd = state.position;
|
|
|
|
} else if (is_EOL(ch)) {
|
|
captureSegment(state, captureStart, captureEnd, true);
|
|
writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
|
|
captureStart = captureEnd = state.position;
|
|
|
|
} else if (state.position === state.lineStart && testDocumentSeparator(state)) {
|
|
throwError(state, 'unexpected end of the document within a double quoted scalar');
|
|
|
|
} else {
|
|
state.position++;
|
|
captureEnd = state.position;
|
|
}
|
|
}
|
|
|
|
throwError(state, 'unexpected end of the stream within a double quoted scalar');
|
|
}
|
|
|
|
function readFlowCollection(state, nodeIndent) {
|
|
var readNext = true,
|
|
_line,
|
|
_lineStart,
|
|
_pos,
|
|
_tag = state.tag,
|
|
_result,
|
|
_anchor = state.anchor,
|
|
following,
|
|
terminator,
|
|
isPair,
|
|
isExplicitPair,
|
|
isMapping,
|
|
overridableKeys = Object.create(null),
|
|
keyNode,
|
|
keyTag,
|
|
valueNode,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch === 0x5B/* [ */) {
|
|
terminator = 0x5D;/* ] */
|
|
isMapping = false;
|
|
_result = [];
|
|
} else if (ch === 0x7B/* { */) {
|
|
terminator = 0x7D;/* } */
|
|
isMapping = true;
|
|
_result = {};
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
if (state.anchor !== null) {
|
|
state.anchorMap[state.anchor] = _result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
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;
|
|
} else if (!readNext) {
|
|
throwError(state, 'missed comma between flow collection entries');
|
|
} else if (ch === 0x2C/* , */) {
|
|
// "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
|
|
throwError(state, "expected the node content, but found ','");
|
|
}
|
|
|
|
keyTag = keyNode = valueNode = null;
|
|
isPair = isExplicitPair = false;
|
|
|
|
if (ch === 0x3F/* ? */) {
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
|
|
if (is_WS_OR_EOL(following)) {
|
|
isPair = isExplicitPair = true;
|
|
state.position++;
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
}
|
|
}
|
|
|
|
_line = state.line; // Save the current line.
|
|
_lineStart = state.lineStart;
|
|
_pos = state.position;
|
|
composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
|
|
keyTag = state.tag;
|
|
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);
|
|
composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
|
|
valueNode = state.result;
|
|
}
|
|
|
|
if (isMapping) {
|
|
storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
|
|
} else if (isPair) {
|
|
_result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
|
|
} else {
|
|
_result.push(keyNode);
|
|
}
|
|
|
|
skipSeparationSpace(state, true, nodeIndent);
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch === 0x2C/* , */) {
|
|
readNext = true;
|
|
ch = state.input.charCodeAt(++state.position);
|
|
} else {
|
|
readNext = false;
|
|
}
|
|
}
|
|
|
|
throwError(state, 'unexpected end of the stream within a flow collection');
|
|
}
|
|
|
|
function readBlockScalar(state, nodeIndent) {
|
|
var captureStart,
|
|
folding,
|
|
chomping = CHOMPING_CLIP,
|
|
didReadContent = false,
|
|
detectedIndent = false,
|
|
textIndent = nodeIndent,
|
|
emptyLines = 0,
|
|
atMoreIndented = false,
|
|
tmp,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch === 0x7C/* | */) {
|
|
folding = false;
|
|
} else if (ch === 0x3E/* > */) {
|
|
folding = true;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
state.kind = 'scalar';
|
|
state.result = '';
|
|
|
|
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 {
|
|
throwError(state, 'repeat of a chomping mode identifier');
|
|
}
|
|
|
|
} else if ((tmp = fromDecimalCode(ch)) >= 0) {
|
|
if (tmp === 0) {
|
|
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 {
|
|
throwError(state, 'repeat of an indentation width identifier');
|
|
}
|
|
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (is_WHITE_SPACE(ch)) {
|
|
do { ch = state.input.charCodeAt(++state.position); }
|
|
while (is_WHITE_SPACE(ch));
|
|
|
|
if (ch === 0x23/* # */) {
|
|
do { ch = state.input.charCodeAt(++state.position); }
|
|
while (!is_EOL(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 (is_EOL(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 (is_WHITE_SPACE(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;
|
|
captureStart = state.position;
|
|
|
|
while (!is_EOL(ch) && (ch !== 0)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
captureSegment(state, captureStart, state.position, false);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function readBlockSequence(state, nodeIndent) {
|
|
var _line,
|
|
_tag = state.tag,
|
|
_anchor = state.anchor,
|
|
_result = [],
|
|
following,
|
|
detected = false,
|
|
ch;
|
|
|
|
// there is a leading tab before this token, so it can't be a block sequence/mapping;
|
|
// it can still be flow sequence/mapping or a scalar
|
|
if (state.firstTabInLine !== -1) return false;
|
|
|
|
if (state.anchor !== null) {
|
|
state.anchorMap[state.anchor] = _result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (ch !== 0) {
|
|
if (state.firstTabInLine !== -1) {
|
|
state.position = state.firstTabInLine;
|
|
throwError(state, 'tab characters must not be used in indentation');
|
|
}
|
|
|
|
if (ch !== 0x2D/* - */) {
|
|
break;
|
|
}
|
|
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
|
|
if (!is_WS_OR_EOL(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;
|
|
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)) {
|
|
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, nodeIndent, flowIndent) {
|
|
var following,
|
|
allowCompact,
|
|
_line,
|
|
_keyLine,
|
|
_keyLineStart,
|
|
_keyPos,
|
|
_tag = state.tag,
|
|
_anchor = state.anchor,
|
|
_result = {},
|
|
overridableKeys = Object.create(null),
|
|
keyTag = null,
|
|
keyNode = null,
|
|
valueNode = null,
|
|
atExplicitKey = false,
|
|
detected = false,
|
|
ch;
|
|
|
|
// there is a leading tab before this token, so it can't be a block sequence/mapping;
|
|
// it can still be flow sequence/mapping or a scalar
|
|
if (state.firstTabInLine !== -1) return false;
|
|
|
|
if (state.anchor !== null) {
|
|
state.anchorMap[state.anchor] = _result;
|
|
}
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (ch !== 0) {
|
|
if (!atExplicitKey && state.firstTabInLine !== -1) {
|
|
state.position = state.firstTabInLine;
|
|
throwError(state, 'tab characters must not be used in indentation');
|
|
}
|
|
|
|
following = state.input.charCodeAt(state.position + 1);
|
|
_line = state.line; // Save the current line.
|
|
|
|
//
|
|
// 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/* : */) && is_WS_OR_EOL(following)) {
|
|
|
|
if (ch === 0x3F/* ? */) {
|
|
if (atExplicitKey) {
|
|
storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
|
|
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 {
|
|
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.
|
|
//
|
|
} else {
|
|
_keyLine = state.line;
|
|
_keyLineStart = state.lineStart;
|
|
_keyPos = state.position;
|
|
|
|
if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
|
|
// Neither implicit nor explicit notation.
|
|
// Reading is done. Go to the epilogue.
|
|
break;
|
|
}
|
|
|
|
if (state.line === _line) {
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
while (is_WHITE_SPACE(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (ch === 0x3A/* : */) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
|
|
if (!is_WS_OR_EOL(ch)) {
|
|
throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
|
|
}
|
|
|
|
if (atExplicitKey) {
|
|
storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
|
|
keyTag = keyNode = valueNode = null;
|
|
}
|
|
|
|
detected = true;
|
|
atExplicitKey = false;
|
|
allowCompact = false;
|
|
keyTag = state.tag;
|
|
keyNode = state.result;
|
|
|
|
} else if (detected) {
|
|
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) {
|
|
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`.
|
|
}
|
|
}
|
|
|
|
//
|
|
// Common reading code for both explicit and implicit notations.
|
|
//
|
|
if (state.line === _line || state.lineIndent > nodeIndent) {
|
|
if (atExplicitKey) {
|
|
_keyLine = state.line;
|
|
_keyLineStart = state.lineStart;
|
|
_keyPos = state.position;
|
|
}
|
|
|
|
if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
|
|
if (atExplicitKey) {
|
|
keyNode = state.result;
|
|
} else {
|
|
valueNode = state.result;
|
|
}
|
|
}
|
|
|
|
if (!atExplicitKey) {
|
|
storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
|
|
keyTag = keyNode = valueNode = null;
|
|
}
|
|
|
|
skipSeparationSpace(state, true, -1);
|
|
ch = state.input.charCodeAt(state.position);
|
|
}
|
|
|
|
if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
|
|
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, keyNode, null, _keyLine, _keyLineStart, _keyPos);
|
|
}
|
|
|
|
// Expose the resulting mapping.
|
|
if (detected) {
|
|
state.tag = _tag;
|
|
state.anchor = _anchor;
|
|
state.kind = 'mapping';
|
|
state.result = _result;
|
|
}
|
|
|
|
return detected;
|
|
}
|
|
|
|
function readTagProperty(state) {
|
|
var _position,
|
|
isVerbatim = false,
|
|
isNamed = false,
|
|
tagHandle,
|
|
tagName,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x21/* ! */) return false;
|
|
|
|
if (state.tag !== null) {
|
|
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 {
|
|
throwError(state, 'unexpected end of the stream within a verbatim tag');
|
|
}
|
|
} else {
|
|
while (ch !== 0 && !is_WS_OR_EOL(ch)) {
|
|
|
|
if (ch === 0x21/* ! */) {
|
|
if (!isNamed) {
|
|
tagHandle = state.input.slice(_position - 1, state.position + 1);
|
|
|
|
if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
|
|
throwError(state, 'named tag handle cannot contain such characters');
|
|
}
|
|
|
|
isNamed = true;
|
|
_position = state.position + 1;
|
|
} else {
|
|
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)) {
|
|
throwError(state, 'tag suffix cannot contain flow indicator characters');
|
|
}
|
|
}
|
|
|
|
if (tagName && !PATTERN_TAG_URI.test(tagName)) {
|
|
throwError(state, 'tag name cannot contain such characters: ' + tagName);
|
|
}
|
|
|
|
try {
|
|
tagName = decodeURIComponent(tagName);
|
|
} catch (err) {
|
|
throwError(state, 'tag name is malformed: ' + tagName);
|
|
}
|
|
|
|
if (isVerbatim) {
|
|
state.tag = tagName;
|
|
|
|
} else if (_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 {
|
|
throwError(state, 'undeclared tag handle "' + tagHandle + '"');
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function readAnchorProperty(state) {
|
|
var _position,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x26/* & */) return false;
|
|
|
|
if (state.anchor !== null) {
|
|
throwError(state, 'duplication of an anchor property');
|
|
}
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
_position = state.position;
|
|
|
|
while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (state.position === _position) {
|
|
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) {
|
|
var _position, alias,
|
|
ch;
|
|
|
|
ch = state.input.charCodeAt(state.position);
|
|
|
|
if (ch !== 0x2A/* * */) return false;
|
|
|
|
ch = state.input.charCodeAt(++state.position);
|
|
_position = state.position;
|
|
|
|
while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (state.position === _position) {
|
|
throwError(state, 'name of an alias node must contain at least one character');
|
|
}
|
|
|
|
alias = state.input.slice(_position, state.position);
|
|
|
|
if (!_hasOwnProperty.call(state.anchorMap, alias)) {
|
|
throwError(state, 'unidentified alias "' + alias + '"');
|
|
}
|
|
|
|
state.result = state.anchorMap[alias];
|
|
skipSeparationSpace(state, true, -1);
|
|
return true;
|
|
}
|
|
|
|
function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
|
|
var allowBlockStyles,
|
|
allowBlockScalars,
|
|
allowBlockCollections,
|
|
indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
|
|
atNewLine = false,
|
|
hasContent = false,
|
|
typeIndex,
|
|
typeQuantity,
|
|
typeList,
|
|
type,
|
|
flowIndent,
|
|
blockIndent;
|
|
|
|
if (state.listener !== null) {
|
|
state.listener('open', state);
|
|
}
|
|
|
|
state.tag = null;
|
|
state.anchor = null;
|
|
state.kind = null;
|
|
state.result = null;
|
|
|
|
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) {
|
|
if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
|
|
flowIndent = parentIndent;
|
|
} else {
|
|
flowIndent = 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) {
|
|
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) {
|
|
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) {
|
|
if (state.anchor !== null) {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
|
|
} else if (state.tag === '?') {
|
|
// Implicit resolving is not allowed for non-scalar types, and '?'
|
|
// non-specific tag is only automatically assigned to plain scalars.
|
|
//
|
|
// We only need to check kind conformity in case user explicitly assigns '?'
|
|
// tag, for example like this: "!<?> [0]"
|
|
//
|
|
if (state.result !== null && state.kind !== 'scalar') {
|
|
throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
|
|
}
|
|
|
|
for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
|
|
type = state.implicitTypes[typeIndex];
|
|
|
|
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) {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
} else if (state.tag !== '!') {
|
|
if (_hasOwnProperty.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
|
|
type = state.typeMap[state.kind || 'fallback'][state.tag];
|
|
} else {
|
|
// looking for multi type
|
|
type = null;
|
|
typeList = state.typeMap.multi[state.kind || 'fallback'];
|
|
|
|
for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
|
|
if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
|
|
type = typeList[typeIndex];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!type) {
|
|
throwError(state, 'unknown tag !<' + state.tag + '>');
|
|
}
|
|
|
|
if (state.result !== null && type.kind !== state.kind) {
|
|
throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
|
|
}
|
|
|
|
if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
|
|
throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
|
|
} else {
|
|
state.result = type.construct(state.result, state.tag);
|
|
if (state.anchor !== null) {
|
|
state.anchorMap[state.anchor] = state.result;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (state.listener !== null) {
|
|
state.listener('close', state);
|
|
}
|
|
return state.tag !== null || state.anchor !== null || hasContent;
|
|
}
|
|
|
|
function readDocument(state) {
|
|
var documentStart = state.position,
|
|
_position,
|
|
directiveName,
|
|
directiveArgs,
|
|
hasDirectives = false,
|
|
ch;
|
|
|
|
state.version = null;
|
|
state.checkLineBreaks = state.legacy;
|
|
state.tagMap = Object.create(null);
|
|
state.anchorMap = Object.create(null);
|
|
|
|
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 && !is_WS_OR_EOL(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
directiveName = state.input.slice(_position, state.position);
|
|
directiveArgs = [];
|
|
|
|
if (directiveName.length < 1) {
|
|
throwError(state, 'directive name must not be less than one character in length');
|
|
}
|
|
|
|
while (ch !== 0) {
|
|
while (is_WHITE_SPACE(ch)) {
|
|
ch = state.input.charCodeAt(++state.position);
|
|
}
|
|
|
|
if (ch === 0x23/* # */) {
|
|
do { ch = state.input.charCodeAt(++state.position); }
|
|
while (ch !== 0 && !is_EOL(ch));
|
|
break;
|
|
}
|
|
|
|
if (is_EOL(ch)) break;
|
|
|
|
_position = state.position;
|
|
|
|
while (ch !== 0 && !is_WS_OR_EOL(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) {
|
|
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)) {
|
|
throwError(state, 'end of the stream or a document separator is expected');
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
function loadDocuments(input, options) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
var state = new State(input, options);
|
|
|
|
var nullpos = input.indexOf('\0');
|
|
|
|
if (nullpos !== -1) {
|
|
state.position = nullpos;
|
|
throwError(state, 'null byte is not allowed in input');
|
|
}
|
|
|
|
// 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;
|
|
}
|
|
|
|
|
|
function loadAll(input, iterator, options) {
|
|
if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
|
|
options = iterator;
|
|
iterator = null;
|
|
}
|
|
|
|
var documents = loadDocuments(input, options);
|
|
|
|
if (typeof iterator !== 'function') {
|
|
return documents;
|
|
}
|
|
|
|
for (var index = 0, length = documents.length; index < length; index += 1) {
|
|
iterator(documents[index]);
|
|
}
|
|
}
|
|
|
|
|
|
function load(input, options) {
|
|
var documents = loadDocuments(input, options);
|
|
|
|
if (documents.length === 0) {
|
|
/*eslint-disable no-undefined*/
|
|
return undefined;
|
|
} else if (documents.length === 1) {
|
|
return documents[0];
|
|
}
|
|
throw new YAMLException('expected a single document in the stream, but found more');
|
|
}
|
|
|
|
|
|
module.exports.loadAll = loadAll;
|
|
module.exports.load = load;
|