--- /dev/null
+'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;
projects / yaffs-website / blobdiff