| 'use strict'; |
| |
| /*eslint-disable max-len,no-use-before-define*/ |
| |
| var common = require('./common'); |
| var YAMLException = require('./exception'); |
| var Mark = require('./mark'); |
| var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe'); |
| var DEFAULT_FULL_SCHEMA = require('./schema/default_full'); |
| |
| |
| 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 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) { |
| 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_FULL_SCHEMA; |
| this.onWarning = options['onWarning'] || null; |
| 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; |
| |
| this.documents = []; |
| |
| /* |
| this.version; |
| this.checkLineBreaks; |
| this.tagMap; |
| this.anchorMap; |
| this.tag; |
| this.anchor; |
| this.kind; |
| this.result;*/ |
| |
| } |
| |
| |
| function generateError(state, message) { |
| return new YAMLException( |
| message, |
| new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart))); |
| } |
| |
| 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'); |
| } |
| |
| 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) { |
| var index, quantity; |
| |
| 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)) { |
| throwError(state, 'duplicated mapping key'); |
| } |
| _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; |
| } |
| |
| function skipSeparationSpace(state, allowComments, checkIndent) { |
| var lineBreaks = 0, |
| ch = state.input.charCodeAt(state.position); |
| |
| while (ch !== 0) { |
| while (is_WHITE_SPACE(ch)) { |
| 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 = captureEnd = state.position; |
| 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, |
| _tag = state.tag, |
| _result, |
| _anchor = state.anchor, |
| following, |
| terminator, |
| isPair, |
| isExplicitPair, |
| isMapping, |
| overridableKeys = {}, |
| 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'); |
| } |
| |
| 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; |
| 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); |
| } else if (isPair) { |
| _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode)); |
| } 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, |
| 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', emptyLines); |
| } else if (chomping === CHOMPING_CLIP) { |
| if (detectedIndent) { // 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; |
| state.result += common.repeat('\n', emptyLines + 1); |
| |
| // 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 (detectedIndent) { // 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 if (detectedIndent) { |
| // If current line isn't the first one - count line break from the last content line. |
| state.result += common.repeat('\n', emptyLines + 1); |
| } else { |
| // In case of the first content line - count only empty lines. |
| state.result += common.repeat('\n', emptyLines); |
| } |
| |
| 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; |
| |
| if (state.anchor !== null) { |
| state.anchorMap[state.anchor] = _result; |
| } |
| |
| ch = state.input.charCodeAt(state.position); |
| |
| while (ch !== 0) { |
| |
| if (ch !== 0x2D/* - */) { |
| break; |
| } |
| |
| following = state.input.charCodeAt(state.position + 1); |
| |
| if (!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, |
| _tag = state.tag, |
| _anchor = state.anchor, |
| _result = {}, |
| overridableKeys = {}, |
| keyTag = null, |
| keyNode = null, |
| valueNode = null, |
| atExplicitKey = false, |
| detected = false, |
| ch; |
| |
| if (state.anchor !== null) { |
| state.anchorMap[state.anchor] = _result; |
| } |
| |
| ch = state.input.charCodeAt(state.position); |
| |
| while (ch !== 0) { |
| following = state.input.charCodeAt(state.position + 1); |
| _line = state.line; // Save the current line. |
| |
| // |
| // 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); |
| 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'); |
| } |
| |
| state.position += 1; |
| ch = following; |
| |
| // |
| // Implicit notation case. Flow-style node as the key first, then ":", and the value. |
| // |
| } else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) { |
| |
| 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); |
| 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`. |
| } |
| |
| } else { |
| break; // Reading is done. Go to the epilogue. |
| } |
| |
| // |
| // Common reading code for both explicit and implicit notations. |
| // |
| if (state.line === _line || state.lineIndent > nodeIndent) { |
| if (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); |
| keyTag = keyNode = valueNode = null; |
| } |
| |
| skipSeparationSpace(state, true, -1); |
| ch = state.input.charCodeAt(state.position); |
| } |
| |
| if (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); |
| } |
| |
| // 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); |
| } |
| |
| 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 (!state.anchorMap.hasOwnProperty(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, |
| 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 && state.tag !== '!') { |
| if (state.tag === '?') { |
| for (typeIndex = 0, typeQuantity = state.implicitTypes.length; |
| typeIndex < typeQuantity; |
| typeIndex += 1) { |
| type = state.implicitTypes[typeIndex]; |
| |
| // Implicit resolving is not allowed for non-scalar types, and '?' |
| // non-specific tag is only assigned to plain scalars. So, it isn't |
| // needed to check for 'kind' conformity. |
| |
| if (type.resolve(state.result)) { // `state.result` updated in resolver if matched |
| state.result = type.construct(state.result); |
| state.tag = type.tag; |
| if (state.anchor !== null) { |
| state.anchorMap[state.anchor] = state.result; |
| } |
| break; |
| } |
| } |
| } else if (_hasOwnProperty.call(state.typeMap, state.tag)) { |
| type = state.typeMap[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.result` updated in resolver if matched |
| throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag'); |
| } else { |
| state.result = type.construct(state.result); |
| if (state.anchor !== null) { |
| state.anchorMap[state.anchor] = state.result; |
| } |
| } |
| } else { |
| throwError(state, 'unknown tag !<' + state.tag + '>'); |
| } |
| } |
| |
| 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 = {}; |
| state.anchorMap = {}; |
| |
| while ((ch = state.input.charCodeAt(state.position)) !== 0) { |
| skipSeparationSpace(state, true, -1); |
| |
| ch = state.input.charCodeAt(state.position); |
| |
| if (state.lineIndent > 0 || ch !== 0x25/* % */) { |
| break; |
| } |
| |
| hasDirectives = true; |
| ch = state.input.charCodeAt(++state.position); |
| _position = state.position; |
| |
| while (ch !== 0 && !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); |
| |
| // 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) { |
| var documents = loadDocuments(input, options), index, length; |
| |
| for (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'); |
| } |
| |
| |
| function safeLoadAll(input, output, options) { |
| loadAll(input, output, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options)); |
| } |
| |
| |
| function safeLoad(input, options) { |
| return load(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options)); |
| } |
| |
| |
| module.exports.loadAll = loadAll; |
| module.exports.load = load; |
| module.exports.safeLoadAll = safeLoadAll; |
| module.exports.safeLoad = safeLoad; |