diff options
Diffstat (limited to 'node_modules/js-yaml/lib/loader.js')
| -rw-r--r-- | node_modules/js-yaml/lib/loader.js | 1727 |
1 files changed, 0 insertions, 1727 deletions
diff --git a/node_modules/js-yaml/lib/loader.js b/node_modules/js-yaml/lib/loader.js deleted file mode 100644 index 39f13f56..00000000 --- a/node_modules/js-yaml/lib/loader.js +++ /dev/null @@ -1,1727 +0,0 @@ -'use strict'; - -/*eslint-disable max-len,no-use-before-define*/ - -var common = require('./common'); -var YAMLException = require('./exception'); -var makeSnippet = require('./snippet'); -var DEFAULT_SCHEMA = require('./schema/default'); - - -var _hasOwnProperty = Object.prototype.hasOwnProperty; - - -var CONTEXT_FLOW_IN = 1; -var CONTEXT_FLOW_OUT = 2; -var CONTEXT_BLOCK_IN = 3; -var CONTEXT_BLOCK_OUT = 4; - - -var CHOMPING_CLIP = 1; -var CHOMPING_STRIP = 2; -var CHOMPING_KEEP = 3; - - -var PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/; -var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/; -var PATTERN_FLOW_INDICATORS = /[,\[\]\{\}]/; -var PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\-]+!)$/i; -var PATTERN_TAG_URI = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i; - - -function _class(obj) { return Object.prototype.toString.call(obj); } - -function is_EOL(c) { - return (c === 0x0A/* LF */) || (c === 0x0D/* CR */); -} - -function is_WHITE_SPACE(c) { - return (c === 0x09/* Tab */) || (c === 0x20/* Space */); -} - -function is_WS_OR_EOL(c) { - return (c === 0x09/* Tab */) || - (c === 0x20/* Space */) || - (c === 0x0A/* LF */) || - (c === 0x0D/* CR */); -} - -function is_FLOW_INDICATOR(c) { - return c === 0x2C/* , */ || - c === 0x5B/* [ */ || - c === 0x5D/* ] */ || - c === 0x7B/* { */ || - c === 0x7D/* } */; -} - -function fromHexCode(c) { - var lc; - - if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) { - return c - 0x30; - } - - /*eslint-disable no-bitwise*/ - lc = c | 0x20; - - if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) { - return lc - 0x61 + 10; - } - - return -1; -} - -function escapedHexLen(c) { - if (c === 0x78/* x */) { return 2; } - if (c === 0x75/* u */) { return 4; } - if (c === 0x55/* U */) { return 8; } - return 0; -} - -function fromDecimalCode(c) { - if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) { - return c - 0x30; - } - - return -1; -} - -function simpleEscapeSequence(c) { - /* eslint-disable indent */ - return (c === 0x30/* 0 */) ? '\x00' : - (c === 0x61/* a */) ? '\x07' : - (c === 0x62/* b */) ? '\x08' : - (c === 0x74/* t */) ? '\x09' : - (c === 0x09/* Tab */) ? '\x09' : - (c === 0x6E/* n */) ? '\x0A' : - (c === 0x76/* v */) ? '\x0B' : - (c === 0x66/* f */) ? '\x0C' : - (c === 0x72/* r */) ? '\x0D' : - (c === 0x65/* e */) ? '\x1B' : - (c === 0x20/* Space */) ? ' ' : - (c === 0x22/* " */) ? '\x22' : - (c === 0x2F/* / */) ? '/' : - (c === 0x5C/* \ */) ? '\x5C' : - (c === 0x4E/* N */) ? '\x85' : - (c === 0x5F/* _ */) ? '\xA0' : - (c === 0x4C/* L */) ? '\u2028' : - (c === 0x50/* P */) ? '\u2029' : ''; -} - -function charFromCodepoint(c) { - if (c <= 0xFFFF) { - return String.fromCharCode(c); - } - // Encode UTF-16 surrogate pair - // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF - return String.fromCharCode( - ((c - 0x010000) >> 10) + 0xD800, - ((c - 0x010000) & 0x03FF) + 0xDC00 - ); -} - -var simpleEscapeCheck = new Array(256); // integer, for fast access -var simpleEscapeMap = new Array(256); -for (var i = 0; i < 256; i++) { - simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0; - simpleEscapeMap[i] = simpleEscapeSequence(i); -} - - -function State(input, options) { - this.input = input; - - this.filename = options['filename'] || null; - this.schema = options['schema'] || DEFAULT_SCHEMA; - this.onWarning = options['onWarning'] || null; - // (Hidden) Remove? makes the loader to expect YAML 1.1 documents - // if such documents have no explicit %YAML directive - this.legacy = options['legacy'] || false; - - this.json = options['json'] || false; - this.listener = options['listener'] || null; - - this.implicitTypes = this.schema.compiledImplicit; - this.typeMap = this.schema.compiledTypeMap; - - this.length = input.length; - this.position = 0; - this.line = 0; - this.lineStart = 0; - this.lineIndent = 0; - - // position of first leading tab in the current line, - // used to make sure there are no tabs in the indentation - this.firstTabInLine = -1; - - this.documents = []; - - /* - this.version; - this.checkLineBreaks; - this.tagMap; - this.anchorMap; - this.tag; - this.anchor; - this.kind; - this.result;*/ - -} - - -function generateError(state, message) { - var mark = { - name: state.filename, - buffer: state.input.slice(0, -1), // omit trailing \0 - position: state.position, - line: state.line, - column: state.position - state.lineStart - }; - - mark.snippet = makeSnippet(mark); - - return new YAMLException(message, mark); -} - -function throwError(state, message) { - throw generateError(state, message); -} - -function throwWarning(state, message) { - if (state.onWarning) { - state.onWarning.call(null, generateError(state, message)); - } -} - - -var directiveHandlers = { - - YAML: function handleYamlDirective(state, name, args) { - - var match, major, minor; - - if (state.version !== null) { - throwError(state, 'duplication of %YAML directive'); - } - - if (args.length !== 1) { - throwError(state, 'YAML directive accepts exactly one argument'); - } - - match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]); - - if (match === null) { - throwError(state, 'ill-formed argument of the YAML directive'); - } - - major = parseInt(match[1], 10); - minor = parseInt(match[2], 10); - - if (major !== 1) { - throwError(state, 'unacceptable YAML version of the document'); - } - - state.version = args[0]; - state.checkLineBreaks = (minor < 2); - - if (minor !== 1 && minor !== 2) { - throwWarning(state, 'unsupported YAML version of the document'); - } - }, - - TAG: function handleTagDirective(state, name, args) { - - var handle, prefix; - - if (args.length !== 2) { - throwError(state, 'TAG directive accepts exactly two arguments'); - } - - handle = args[0]; - prefix = args[1]; - - if (!PATTERN_TAG_HANDLE.test(handle)) { - throwError(state, 'ill-formed tag handle (first argument) of the TAG directive'); - } - - if (_hasOwnProperty.call(state.tagMap, handle)) { - throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle'); - } - - if (!PATTERN_TAG_URI.test(prefix)) { - throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive'); - } - - try { - prefix = decodeURIComponent(prefix); - } catch (err) { - throwError(state, 'tag prefix is malformed: ' + prefix); - } - - state.tagMap[handle] = prefix; - } -}; - - -function captureSegment(state, start, end, checkJson) { - var _position, _length, _character, _result; - - if (start < end) { - _result = state.input.slice(start, end); - - if (checkJson) { - for (_position = 0, _length = _result.length; _position < _length; _position += 1) { - _character = _result.charCodeAt(_position); - if (!(_character === 0x09 || - (0x20 <= _character && _character <= 0x10FFFF))) { - throwError(state, 'expected valid JSON character'); - } - } - } else if (PATTERN_NON_PRINTABLE.test(_result)) { - throwError(state, 'the stream contains non-printable characters'); - } - - state.result += _result; - } -} - -function mergeMappings(state, destination, source, overridableKeys) { - var sourceKeys, key, index, quantity; - - if (!common.isObject(source)) { - throwError(state, 'cannot merge mappings; the provided source object is unacceptable'); - } - - sourceKeys = Object.keys(source); - - for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) { - key = sourceKeys[index]; - - if (!_hasOwnProperty.call(destination, key)) { - destination[key] = source[key]; - overridableKeys[key] = true; - } - } -} - -function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, - startLine, startLineStart, startPos) { - - var index, quantity; - - // The output is a plain object here, so keys can only be strings. - // We need to convert keyNode to a string, but doing so can hang the process - // (deeply nested arrays that explode exponentially using aliases). - if (Array.isArray(keyNode)) { - keyNode = Array.prototype.slice.call(keyNode); - - for (index = 0, quantity = keyNode.length; index < quantity; index += 1) { - if (Array.isArray(keyNode[index])) { - throwError(state, 'nested arrays are not supported inside keys'); - } - - if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') { - keyNode[index] = '[object Object]'; - } - } - } - - // Avoid code execution in load() via toString property - // (still use its own toString for arrays, timestamps, - // and whatever user schema extensions happen to have @@toStringTag) - if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') { - keyNode = '[object Object]'; - } - - - keyNode = String(keyNode); - - if (_result === null) { - _result = {}; - } - - if (keyTag === 'tag:yaml.org,2002:merge') { - if (Array.isArray(valueNode)) { - for (index = 0, quantity = valueNode.length; index < quantity; index += 1) { - mergeMappings(state, _result, valueNode[index], overridableKeys); - } - } else { - mergeMappings(state, _result, valueNode, overridableKeys); - } - } else { - if (!state.json && - !_hasOwnProperty.call(overridableKeys, keyNode) && - _hasOwnProperty.call(_result, keyNode)) { - state.line = startLine || state.line; - state.lineStart = startLineStart || state.lineStart; - state.position = startPos || state.position; - throwError(state, 'duplicated mapping key'); - } - - // used for this specific key only because Object.defineProperty is slow - if (keyNode === '__proto__') { - Object.defineProperty(_result, keyNode, { - configurable: true, - enumerable: true, - writable: true, - value: valueNode - }); - } else { - _result[keyNode] = valueNode; - } - delete overridableKeys[keyNode]; - } - - return _result; -} - -function readLineBreak(state) { - var ch; - - ch = state.input.charCodeAt(state.position); - - if (ch === 0x0A/* LF */) { - state.position++; - } else if (ch === 0x0D/* CR */) { - state.position++; - if (state.input.charCodeAt(state.position) === 0x0A/* LF */) { - state.position++; - } - } else { - throwError(state, 'a line break is expected'); - } - - state.line += 1; - state.lineStart = state.position; - state.firstTabInLine = -1; -} - -function skipSeparationSpace(state, allowComments, checkIndent) { - var lineBreaks = 0, - ch = state.input.charCodeAt(state.position); - - while (ch !== 0) { - while (is_WHITE_SPACE(ch)) { - if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) { - state.firstTabInLine = state.position; - } - ch = state.input.charCodeAt(++state.position); - } - - if (allowComments && ch === 0x23/* # */) { - do { - ch = state.input.charCodeAt(++state.position); - } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0); - } - - if (is_EOL(ch)) { - readLineBreak(state); - - ch = state.input.charCodeAt(state.position); - lineBreaks++; - state.lineIndent = 0; - - while (ch === 0x20/* Space */) { - state.lineIndent++; - ch = state.input.charCodeAt(++state.position); - } - } else { - break; - } - } - - if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) { - throwWarning(state, 'deficient indentation'); - } - - return lineBreaks; -} - -function testDocumentSeparator(state) { - var _position = state.position, - ch; - - ch = state.input.charCodeAt(_position); - - // Condition state.position === state.lineStart is tested - // in parent on each call, for efficiency. No needs to test here again. - if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) && - ch === state.input.charCodeAt(_position + 1) && - ch === state.input.charCodeAt(_position + 2)) { - - _position += 3; - - ch = state.input.charCodeAt(_position); - - if (ch === 0 || is_WS_OR_EOL(ch)) { - return true; - } - } - - return false; -} - -function writeFoldedLines(state, count) { - if (count === 1) { - state.result += ' '; - } else if (count > 1) { - state.result += common.repeat('\n', count - 1); - } -} - - -function readPlainScalar(state, nodeIndent, withinFlowCollection) { - var preceding, - following, - captureStart, - captureEnd, - hasPendingContent, - _line, - _lineStart, - _lineIndent, - _kind = state.kind, - _result = state.result, - ch; - - ch = state.input.charCodeAt(state.position); - - if (is_WS_OR_EOL(ch) || - is_FLOW_INDICATOR(ch) || - ch === 0x23/* # */ || - ch === 0x26/* & */ || - ch === 0x2A/* * */ || - ch === 0x21/* ! */ || - ch === 0x7C/* | */ || - ch === 0x3E/* > */ || - ch === 0x27/* ' */ || - ch === 0x22/* " */ || - ch === 0x25/* % */ || - ch === 0x40/* @ */ || - ch === 0x60/* ` */) { - return false; - } - - if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) { - following = state.input.charCodeAt(state.position + 1); - - if (is_WS_OR_EOL(following) || - withinFlowCollection && is_FLOW_INDICATOR(following)) { - return false; - } - } - - state.kind = 'scalar'; - state.result = ''; - captureStart = captureEnd = state.position; - hasPendingContent = false; - - while (ch !== 0) { - if (ch === 0x3A/* : */) { - following = state.input.charCodeAt(state.position + 1); - - if (is_WS_OR_EOL(following) || - withinFlowCollection && is_FLOW_INDICATOR(following)) { - break; - } - - } else if (ch === 0x23/* # */) { - preceding = state.input.charCodeAt(state.position - 1); - - if (is_WS_OR_EOL(preceding)) { - break; - } - - } else if ((state.position === state.lineStart && testDocumentSeparator(state)) || - withinFlowCollection && is_FLOW_INDICATOR(ch)) { - break; - - } 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; |