yaml-ast-parser
Version:
[](https://travis-ci.org/mulesoft-labs/yaml-ast-parser)
1,385 lines • 51.1 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var ast = require("./yamlAST");
'use strict';
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) || (c === 0x0D);
}
function is_WHITE_SPACE(c) {
return (c === 0x09) || (c === 0x20);
}
function is_WS_OR_EOL(c) {
return (c === 0x09) ||
(c === 0x20) ||
(c === 0x0A) ||
(c === 0x0D);
}
function is_FLOW_INDICATOR(c) {
return 0x2C === c ||
0x5B === c ||
0x5D === c ||
0x7B === c ||
0x7D === c;
}
function fromHexCode(c) {
var lc;
if ((0x30 <= c) && (c <= 0x39)) {
return c - 0x30;
}
lc = c | 0x20;
if ((0x61 <= lc) && (lc <= 0x66)) {
return lc - 0x61 + 10;
}
return -1;
}
function escapedHexLen(c) {
if (c === 0x78) {
return 2;
}
if (c === 0x75) {
return 4;
}
if (c === 0x55) {
return 8;
}
return 0;
}
function fromDecimalCode(c) {
if ((0x30 <= c) && (c <= 0x39)) {
return c - 0x30;
}
return -1;
}
function simpleEscapeSequence(c) {
return (c === 0x30) ? '\x00' :
(c === 0x61) ? '\x07' :
(c === 0x62) ? '\x08' :
(c === 0x74) ? '\x09' :
(c === 0x09) ? '\x09' :
(c === 0x6E) ? '\x0A' :
(c === 0x76) ? '\x0B' :
(c === 0x66) ? '\x0C' :
(c === 0x72) ? '\x0D' :
(c === 0x65) ? '\x1B' :
(c === 0x20) ? ' ' :
(c === 0x22) ? '\x22' :
(c === 0x2F) ? '/' :
(c === 0x5C) ? '\x5C' :
(c === 0x4E) ? '\x85' :
(c === 0x5F) ? '\xA0' :
(c === 0x4C) ? '\u2028' :
(c === 0x50) ? '\u2029' : '';
}
function charFromCodepoint(c) {
if (c <= 0xFFFF) {
return String.fromCharCode(c);
}
return String.fromCharCode(((c - 0x010000) >> 10) + 0xD800, ((c - 0x010000) & 0x03FF) + 0xDC00);
}
var simpleEscapeCheck = new Array(256);
var simpleEscapeMap = new Array(256);
var customEscapeCheck = new Array(256);
var customEscapeMap = new Array(256);
for (var i = 0; i < 256; i++) {
customEscapeMap[i] = simpleEscapeMap[i] = simpleEscapeSequence(i);
simpleEscapeCheck[i] = simpleEscapeMap[i] ? 1 : 0;
customEscapeCheck[i] = 1;
if (!simpleEscapeCheck[i]) {
customEscapeMap[i] = '\\' + String.fromCharCode(i);
}
}
var State = (function () {
function State(input, options) {
this.errorMap = {};
this.errors = [];
this.lines = [];
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.allowAnyEscape = options['allowAnyEscape'] || false;
this.ignoreDuplicateKeys = options['ignoreDuplicateKeys'] || false;
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 = [];
}
return State;
}());
function generateError(state, message, isWarning) {
if (isWarning === void 0) { isWarning = false; }
return new YAMLException(message, new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart)), isWarning);
}
function throwErrorFromPosition(state, position, message, isWarning, toLineEnd) {
if (isWarning === void 0) { isWarning = false; }
if (toLineEnd === void 0) { toLineEnd = false; }
var line = positionToLine(state, position);
if (!line) {
return;
}
var hash = message + position;
if (state.errorMap[hash]) {
return;
}
var mark = new Mark(state.filename, state.input, position, line.line, (position - line.start));
if (toLineEnd) {
mark.toLineEnd = true;
}
var error = new YAMLException(message, mark, isWarning);
state.errors.push(error);
}
function throwError(state, message) {
var error = generateError(state, message);
var hash = error.message + error.mark.position;
if (state.errorMap[hash]) {
return;
}
state.errors.push(error);
state.errorMap[hash] = 1;
var or = state.position;
while (true) {
if (state.position >= state.input.length - 1) {
return;
}
var c = state.input.charAt(state.position);
if (c == '\n') {
state.position--;
if (state.position == or) {
state.position += 1;
}
return;
}
if (c == '\r') {
state.position--;
if (state.position == or) {
state.position += 1;
}
return;
}
state.position++;
}
}
function throwWarning(state, message) {
var error = generateError(state, message);
if (state.onWarning) {
state.onWarning.call(null, error);
}
else {
}
}
var directiveHandlers = {
YAML: function handleYamlDirective(state, name, args) {
var match, major, minor;
if (null !== state.version) {
throwError(state, 'duplication of %YAML directive');
}
if (1 !== args.length) {
throwError(state, 'YAML directive accepts exactly one argument');
}
match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
if (null === match) {
throwError(state, 'ill-formed argument of the YAML directive');
}
major = parseInt(match[1], 10);
minor = parseInt(match[2], 10);
if (1 !== major) {
throwError(state, 'found incompatible YAML document (version 1.2 is required)');
}
state.version = args[0];
state.checkLineBreaks = (minor < 2);
if (2 !== minor) {
throwError(state, 'found incompatible YAML document (version 1.2 is required)');
}
},
TAG: function handleTagDirective(state, name, args) {
var handle, prefix;
if (2 !== args.length) {
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;
var scalar = state.result;
if (scalar.startPosition == -1) {
scalar.startPosition = start;
}
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 (!(0x09 === _character ||
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');
}
scalar.value += _result;
scalar.endPosition = end;
}
}
function mergeMappings(state, destination, source) {
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];
}
}
}
function storeMappingPair(state, _result, keyTag, keyNode, valueNode) {
var index, quantity;
if (keyNode == null) {
return;
}
if (null === _result) {
_result = {
startPosition: keyNode.startPosition,
endPosition: valueNode.endPosition,
parent: null,
errors: [],
mappings: [], kind: ast.Kind.MAP
};
}
var mapping = ast.newMapping(keyNode, valueNode);
mapping.parent = _result;
keyNode.parent = mapping;
if (valueNode != null) {
valueNode.parent = mapping;
}
!state.ignoreDuplicateKeys && _result.mappings.forEach(function (sibling) {
if (sibling.key && sibling.key.value === (mapping.key && mapping.key.value)) {
throwErrorFromPosition(state, mapping.key.startPosition, 'duplicate key');
throwErrorFromPosition(state, sibling.key.startPosition, 'duplicate key');
}
});
_result.mappings.push(mapping);
_result.endPosition = valueNode ? valueNode.endPosition : keyNode.endPosition + 1;
return _result;
}
function readLineBreak(state) {
var ch;
ch = state.input.charCodeAt(state.position);
if (0x0A === ch) {
state.position++;
}
else if (0x0D === ch) {
state.position++;
if (0x0A === state.input.charCodeAt(state.position)) {
state.position++;
}
}
else {
throwError(state, 'a line break is expected');
}
state.line += 1;
state.lineStart = state.position;
state.lines.push({
start: state.lineStart,
line: state.line
});
}
var Line = (function () {
function Line() {
}
return Line;
}());
function positionToLine(state, position) {
var line;
for (var i = 0; i < state.lines.length; i++) {
if (state.lines[i].start > position) {
break;
}
line = state.lines[i];
}
if (!line) {
return {
start: 0,
line: 0
};
}
return line;
}
function skipSeparationSpace(state, allowComments, checkIndent) {
var lineBreaks = 0, ch = state.input.charCodeAt(state.position);
while (0 !== ch) {
while (is_WHITE_SPACE(ch)) {
if (ch === 0x09) {
state.errors.push(generateError(state, "Using tabs can lead to unpredictable results", true));
}
ch = state.input.charCodeAt(++state.position);
}
if (allowComments && 0x23 === ch) {
do {
ch = state.input.charCodeAt(++state.position);
} while (ch !== 0x0A && ch !== 0x0D && 0 !== ch);
}
if (is_EOL(ch)) {
readLineBreak(state);
ch = state.input.charCodeAt(state.position);
lineBreaks++;
state.lineIndent = 0;
while (0x20 === ch) {
state.lineIndent++;
ch = state.input.charCodeAt(++state.position);
}
}
else {
break;
}
}
if (-1 !== checkIndent && 0 !== lineBreaks && state.lineIndent < checkIndent) {
throwWarning(state, 'deficient indentation');
}
return lineBreaks;
}
function testDocumentSeparator(state) {
var _position = state.position, ch;
ch = state.input.charCodeAt(_position);
if ((0x2D === ch || 0x2E === ch) &&
state.input.charCodeAt(_position + 1) === ch &&
state.input.charCodeAt(_position + 2) === ch) {
_position += 3;
ch = state.input.charCodeAt(_position);
if (ch === 0 || is_WS_OR_EOL(ch)) {
return true;
}
}
return false;
}
function writeFoldedLines(state, scalar, count) {
if (1 === count) {
scalar.value += ' ';
}
else if (count > 1) {
scalar.value += 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;
var state_result = ast.newScalar();
state_result.plainScalar = true;
state.result = state_result;
ch = state.input.charCodeAt(state.position);
if (is_WS_OR_EOL(ch) ||
is_FLOW_INDICATOR(ch) ||
0x23 === ch ||
0x26 === ch ||
0x2A === ch ||
0x21 === ch ||
0x7C === ch ||
0x3E === ch ||
0x27 === ch ||
0x22 === ch ||
0x25 === ch ||
0x40 === ch ||
0x60 === ch) {
return false;
}
if (0x3F === ch || 0x2D === ch) {
following = state.input.charCodeAt(state.position + 1);
if (is_WS_OR_EOL(following) ||
withinFlowCollection && is_FLOW_INDICATOR(following)) {
return false;
}
}
state.kind = 'scalar';
captureStart = captureEnd = state.position;
hasPendingContent = false;
while (0 !== ch) {
if (0x3A === ch) {
following = state.input.charCodeAt(state.position + 1);
if (is_WS_OR_EOL(following) ||
withinFlowCollection && is_FLOW_INDICATOR(following)) {
break;
}
}
else if (0x23 === ch) {
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_result, state.line - _line);
captureStart = captureEnd = state.position;
hasPendingContent = false;
}
if (!is_WHITE_SPACE(ch)) {
captureEnd = state.position + 1;
}
ch = state.input.charCodeAt(++state.position);
if (state.position >= state.input.length) {
return false;
}
}
captureSegment(state, captureStart, captureEnd, false);
if (state.result.startPosition != -1) {
state_result.rawValue = state.input.substring(state_result.startPosition, state_result.endPosition);
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 (0x27 !== ch) {
return false;
}
var scalar = ast.newScalar();
scalar.singleQuoted = true;
state.kind = 'scalar';
state.result = scalar;
scalar.startPosition = state.position;
state.position++;
captureStart = captureEnd = state.position;
while (0 !== (ch = state.input.charCodeAt(state.position))) {
if (0x27 === ch) {
captureSegment(state, captureStart, state.position, true);
ch = state.input.charCodeAt(++state.position);
scalar.endPosition = state.position;
if (0x27 === ch) {
captureStart = captureEnd = state.position;
state.position++;
}
else {
return true;
}
}
else if (is_EOL(ch)) {
captureSegment(state, captureStart, captureEnd, true);
writeFoldedLines(state, scalar, 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;
scalar.endPosition = state.position;
}
}
throwError(state, 'unexpected end of the stream within a single quoted scalar');
}
function readDoubleQuotedScalar(state, nodeIndent) {
var captureStart, captureEnd, hexLength, hexResult, tmp, tmpEsc, ch;
ch = state.input.charCodeAt(state.position);
if (0x22 !== ch) {
return false;
}
state.kind = 'scalar';
var scalar = ast.newScalar();
scalar.doubleQuoted = true;
state.result = scalar;
scalar.startPosition = state.position;
state.position++;
captureStart = captureEnd = state.position;
while (0 !== (ch = state.input.charCodeAt(state.position))) {
if (0x22 === ch) {
captureSegment(state, captureStart, state.position, true);
state.position++;
scalar.endPosition = state.position;
scalar.rawValue = state.input.substring(scalar.startPosition, scalar.endPosition);
return true;
}
else if (0x5C === ch) {
captureSegment(state, captureStart, state.position, true);
ch = state.input.charCodeAt(++state.position);
if (is_EOL(ch)) {
skipSeparationSpace(state, false, nodeIndent);
}
else if (ch < 256 && (state.allowAnyEscape ? customEscapeCheck[ch] : simpleEscapeCheck[ch])) {
scalar.value += (state.allowAnyEscape ? customEscapeMap[ch] : 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');
}
}
scalar.value += 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, scalar, 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, keyNode, keyTag, valueNode, ch;
ch = state.input.charCodeAt(state.position);
if (ch === 0x5B) {
terminator = 0x5D;
isMapping = false;
_result = ast.newItems();
_result.startPosition = state.position;
}
else if (ch === 0x7B) {
terminator = 0x7D;
isMapping = true;
_result = ast.newMap();
_result.startPosition = state.position;
}
else {
return false;
}
if (null !== state.anchor) {
_result.anchorId = state.anchor;
state.anchorMap[state.anchor] = _result;
}
ch = state.input.charCodeAt(++state.position);
while (0 !== ch) {
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;
_result.endPosition = state.position;
return true;
}
else if (!readNext) {
var p = state.position;
throwError(state, 'missed comma between flow collection entries');
state.position = p + 1;
}
keyTag = keyNode = valueNode = null;
isPair = isExplicitPair = false;
if (0x3F === ch) {
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) && 0x3A === ch) {
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, keyTag, keyNode, valueNode);
}
else if (isPair) {
var mp = storeMappingPair(state, null, keyTag, keyNode, valueNode);
mp.parent = _result;
_result.items.push(mp);
}
else {
if (keyNode) {
keyNode.parent = _result;
}
_result.items.push(keyNode);
}
_result.endPosition = state.position + 1;
skipSeparationSpace(state, true, nodeIndent);
ch = state.input.charCodeAt(state.position);
if (0x2C === ch) {
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;
}
var sc = ast.newScalar();
state.kind = 'scalar';
state.result = sc;
sc.startPosition = state.position;
while (0 !== ch) {
ch = state.input.charCodeAt(++state.position);
if (0x2B === ch || 0x2D === ch) {
if (CHOMPING_CLIP === chomping) {
chomping = (0x2B === ch) ? 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 (0x23 === ch) {
do {
ch = state.input.charCodeAt(++state.position);
} while (!is_EOL(ch) && (0 !== ch));
}
}
while (0 !== ch) {
readLineBreak(state);
state.lineIndent = 0;
ch = state.input.charCodeAt(state.position);
while ((!detectedIndent || state.lineIndent < textIndent) &&
(0x20 === ch)) {
state.lineIndent++;
ch = state.input.charCodeAt(++state.position);
}
if (!detectedIndent && state.lineIndent > textIndent) {
textIndent = state.lineIndent;
}
if (is_EOL(ch)) {
emptyLines++;
continue;
}
if (state.lineIndent < textIndent) {
if (chomping === CHOMPING_KEEP) {
sc.value += common.repeat('\n', emptyLines);
}
else if (chomping === CHOMPING_CLIP) {
if (detectedIndent) {
sc.value += '\n';
}
}
break;
}
if (folding) {
if (is_WHITE_SPACE(ch)) {
atMoreIndented = true;
sc.value += common.repeat('\n', emptyLines + 1);
}
else if (atMoreIndented) {
atMoreIndented = false;
sc.value += common.repeat('\n', emptyLines + 1);
}
else if (0 === emptyLines) {
if (detectedIndent) {
sc.value += ' ';
}
}
else {
sc.value += common.repeat('\n', emptyLines);
}
}
else if (detectedIndent) {
sc.value += common.repeat('\n', emptyLines + 1);
}
else {
}
detectedIndent = true;
emptyLines = 0;
captureStart = state.position;
while (!is_EOL(ch) && (0 !== ch)) {
ch = state.input.charCodeAt(++state.position);
}
captureSegment(state, captureStart, state.position, false);
}
sc.endPosition = state.position;
var i = state.position - 1;
var needMinus = false;
while (true) {
var c = state.input[i];
if (c == '\r' || c == '\n') {
if (needMinus) {
i--;
}
break;
}
if (c != ' ' && c != '\t') {
break;
}
i--;
}
sc.endPosition = i;
sc.rawValue = state.input.substring(sc.startPosition, sc.endPosition);
return true;
}
function readBlockSequence(state, nodeIndent) {
var _line, _tag = state.tag, _anchor = state.anchor, _result = ast.newItems(), following, detected = false, ch;
if (null !== state.anchor) {
_result.anchorId = state.anchor;
state.anchorMap[state.anchor] = _result;
}
_result.startPosition = state.position;
ch = state.input.charCodeAt(state.position);
while (0 !== ch) {
if (0x2D !== ch) {
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.items.push(null);
ch = state.input.charCodeAt(state.position);
continue;
}
}
_line = state.line;
composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
if (state.result) {
state.result.parent = _result;
_result.items.push(state.result);
}
skipSeparationSpace(state, true, -1);
ch = state.input.charCodeAt(state.position);
if ((state.line === _line || state.lineIndent > nodeIndent) && (0 !== ch)) {
throwError(state, 'bad indentation of a sequence entry');
}
else if (state.lineIndent < nodeIndent) {
break;
}
}
_result.endPosition = state.position;
if (detected) {
state.tag = _tag;
state.anchor = _anchor;
state.kind = 'sequence';
state.result = _result;
_result.endPosition = state.position;
return true;
}
return false;
}
function readBlockMapping(state, nodeIndent, flowIndent) {
var following, allowCompact, _line, _tag = state.tag, _anchor = state.anchor, _result = ast.newMap(), keyTag = null, keyNode = null, valueNode = null, atExplicitKey = false, detected = false, ch;
_result.startPosition = state.position;
if (null !== state.anchor) {
_result.anchorId = state.anchor;
state.anchorMap[state.anchor] = _result;
}
ch = state.input.charCodeAt(state.position);
while (0 !== ch) {
following = state.input.charCodeAt(state.position + 1);
_line = state.line;
if ((0x3F === ch || 0x3A === ch) && is_WS_OR_EOL(following)) {
if (0x3F === ch) {
if (atExplicitKey) {
storeMappingPair(state, _result, keyTag, keyNode, null);
keyTag = keyNode = valueNode = null;
}
detected = true;
atExplicitKey = true;
allowCompact = true;
}
else if (atExplicitKey) {
atExplicitKey = false;
allowCompact = true;
}
else {
throwError(state, 'incomplete explicit mapping pair; a key node is missed');
}
state.position += 1;
ch = following;
}
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 (0x3A === ch) {
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, keyTag, keyNode, null);
keyTag = keyNode = valueNode = null;
}
detected = true;
atExplicitKey = false;
allowCompact = false;
keyTag = state.tag;
keyNode = state.result;
}
else if (state.position == state.lineStart && testDocumentSeparator(state)) {
break;
}
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;
}
}
else if (detected) {
throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
while (state.position > 0) {
ch = state.input.charCodeAt(--state.position);
if (is_EOL(ch)) {
state.position++;
break;
}
}
}
else {
state.tag = _tag;
state.anchor = _anchor;
return true;
}
}
else {
break;
}
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, keyTag, keyNode, valueNode);
keyTag = keyNode = valueNode = null;
}
skipSeparationSpace(state, true, -1);
ch = state.input.charCodeAt(state.position);
}
if (state.lineIndent > nodeIndent && (0 !== ch)) {
throwError(state, 'bad indentation of a mapping entry');
}
else if (state.lineIndent < nodeIndent) {
break;
}
}
if (atExplicitKey) {
storeMappingPair(state, _result, keyTag, keyNode, null);
}
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 (0x21 !== ch) {
return false;
}
if (null !== state.tag) {
throwError(state, 'duplication of a tag property');
}
ch = state.input.charCodeAt(++state.position);
if (0x3C === ch) {
isVerbatim = true;
ch = state.input.charCodeAt(++state.position);
}
else if (0x21 === ch) {
isNamed = true;
tagHandle = '!!';
ch = state.input.charCodeAt(++state.position);
}
else {
tagHandle = '!';
}
_position = state.position;
if (isVerbatim) {
do {
ch = state.input.charCodeAt(++state.position);
} while (0 !== ch && 0x3E !== ch);
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 (0 !== ch && !is_WS_OR_EOL(ch)) {
if (0x21 === ch) {
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 (0x26 !== ch) {
return false;
}
if (null !== state.anchor) {
throwError(state, 'duplication of an anchor property');
}
ch = state.input.charCodeAt(++state.position);
_position = state.position;
while (0 !== ch && !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, len = state.length, input = state.input, ch;
ch = state.input.charCodeAt(state.position);
if (0x2A !== ch) {
return false;
}
ch = state.input.charCodeAt(++state.position);
_position = state.position;
while (0 !== ch && !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');
state.position = _position + 1;
}
alias = state.input.slice(_position, state.position);
if (!state.anchorMap.hasOwnProperty(alias)) {
throwError(state, 'unidentified alias "' + alias + '"');
if (state.position <= _position) {
state.position = _position + 1;
}
}
state.result = ast.newAnchorRef(alias, _position, state.position, state.anchorMap[alias]);
skipSeparationSpace(state, true, -1);
return true;
}
function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
var allowBlockStyles, allowBlockScalars, allowBlockCollections, indentStatus = 1, atNewLine = false, hasContent = false, typeIndex, typeQuantity, type, flowIndent, blockIndent, _result;
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;
}
}
}
var tagStart = state.position;
var tagColumn = state.position - state.lineStart;
if (1 === indentStatus) {
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 (1 === indentStatus || 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 (1 === indentStatus) {
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 (null !== state.tag || null !== state.anchor) {
throwError(state, 'alias node should not have any properties');
}
}
else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
hasContent = true;
if (null === state.tag) {
state.tag = '?';
}
}
if (null !== state.anchor) {
state.anchorMap[state.anchor] = state.result;
state.result.anchorId = state.anchor;
}
}
}
else if (0 === indentStatus) {
hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
}
}
if (null !== state.tag && '!' !== state.tag) {
if (state.tag == "!include") {
if (!state.result) {
state.result = ast.newScalar();
state.result.startPosition = state.position;
state.result.endPosition = state.position;
throwError(state, "!include without value");
}
state.result.kind = ast.Kind.INCLUDE_REF;
}
else if ('?' === state.tag) {
for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
type = state.implicitTypes[typeIndex];
var vl = state.result['value'];
if (type.resolve(vl)) {
state.result.valueObject = type.construct(state.result['value']);
state.tag = type.tag;
if (null !== state.anchor) {
state.result.anchorId = state.anchor;
state.anchorMap[state.anchor] = state.result;
}
break;
}
}
}
else if (_hasOwnProperty.call(state.typeMap, state.tag)) {
type = state.typeMap[state.tag];
if (null !== state.result && 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)) {
throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
}
else {
state.result = type.construct(state.result);
if (null !== state.anchor) {
state.result.anchorId = state.anchor;
state.anchorMap[state.anchor] = state.result;
}
}
}
else {
throwErrorFromPosition(state, tagStart, 'unknown tag <' + state.tag + '>', false, true);
}
}
return null !== state.tag || null !== state.anchor || 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 (0 !== (ch = state.input.charCodeAt(state.position))) {
skipSeparationSpace(state, true, -1);
ch = state.input.charCodeAt(state.position);
if (state.lineIndent > 0 || 0x25 !== ch) {
break;
}
hasDirectives = true;
ch = state.input.charCodeAt(++state.position);
_position = state.position;
while (0 !== ch && !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 (0 !== ch) {
while (is_WHITE_SPACE(ch)) {
ch = state.input.charCodeAt(++state.position);
}
if (0x23 === ch) {
do {
ch = state.input.charCodeAt(++state.position);
} while (0 !== ch && !is_EOL(ch));
break;
}
if (is_EOL(ch)) {
break;
}
_position = state.position;
while (0 !== ch && !is_WS_OR_EOL(ch)) {
ch = state.input.charCodeAt(++state.position);
}
directiveArgs.push(state.input.slice(_position, state.position));
}
if (0 !== ch) {
readLineBreak(state);
}
if (_hasOwnProperty.call(directiveHandlers, directiveName)) {
directiveHandlers[directiveName](state, directiveName, directiveArgs);
}
else {
throwWarning(state, 'unknown document directive "' + directiveName + '"');
state.position++;
}
}
skipSeparationSpace(state, true, -1);
if (0 === state.lineIndent &&
0x2D === state.input.charCodeAt(state.position) &&
0x2D === state.input.charCodeAt(state.position + 1) &&
0x2D === state.input.charCodeAt(state.position + 2)) {
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 (0x2E === state.input.charCodeAt(state.position)) {
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 || {};
var inputLength = input.length;
if (inputLength !== 0) {
if (0x0A !== input.charCodeAt(inputLength - 1) &&
0x0D !== input.charCodeAt(inputLength - 1)) {
input += '\n';
}
if (input.charCodeAt(0) === 0xFEFF) {
input = input.slice(1);
}
}
var state = new State(input, options);
state.input += '\0';
while (0x20 === state.input.charCodeAt(state.position)) {
state.lineIndent += 1;
state.position += 1;
}
while (state.position < (state.length - 1)) {
var q = state.position;
readDocument(state);
if (state.position <= q) {
for (; state.position < state.length - 1; state.position++) {
var c = state.input.charAt(state.position);
if (c == '\n') {
break;
}
}
}
}
var documents = state.documents;
var docsCount = documents.length;
if (docsCount > 0) {
documents[docsCount - 1].endPosition = inputLength;
}
for (var _i = 0, documents_1 = documents; _i < documents_1.length; _i++) {
var x = documents_1[_i];
x.errors = state.errors;
if (x.startPosition > x.endPosition) {
x.startPosition = x.endPosition;
}
}
return documents;
}
function loadAll(input, iterator, options) {
if (options === void 0) { options = {}; }
var documents = loadDocuments(input, options), index, length;
for (index = 0, length = documents.length; index < length; index += 1) {
iterator(documents[index]);
}
}
exports.loadAll = load