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PlainValue-ec8e588e.js
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Mon, Feb 10, 22:28

PlainValue-ec8e588e.js
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'use strict';
const Char = {
ANCHOR: '&',
COMMENT: '#',
TAG: '!',
DIRECTIVES_END: '-',
DOCUMENT_END: '.'
};
const Type = {
ALIAS: 'ALIAS',
BLANK_LINE: 'BLANK_LINE',
BLOCK_FOLDED: 'BLOCK_FOLDED',
BLOCK_LITERAL: 'BLOCK_LITERAL',
COMMENT: 'COMMENT',
DIRECTIVE: 'DIRECTIVE',
DOCUMENT: 'DOCUMENT',
FLOW_MAP: 'FLOW_MAP',
FLOW_SEQ: 'FLOW_SEQ',
MAP: 'MAP',
MAP_KEY: 'MAP_KEY',
MAP_VALUE: 'MAP_VALUE',
PLAIN: 'PLAIN',
QUOTE_DOUBLE: 'QUOTE_DOUBLE',
QUOTE_SINGLE: 'QUOTE_SINGLE',
SEQ: 'SEQ',
SEQ_ITEM: 'SEQ_ITEM'
};
const defaultTagPrefix = 'tag:yaml.org,2002:';
const defaultTags = {
MAP: 'tag:yaml.org,2002:map',
SEQ: 'tag:yaml.org,2002:seq',
STR: 'tag:yaml.org,2002:str'
};
function findLineStarts(src) {
const ls = [0];
let offset = src.indexOf('\n');
while (offset !== -1) {
offset += 1;
ls.push(offset);
offset = src.indexOf('\n', offset);
}
return ls;
}
function getSrcInfo(cst) {
let lineStarts, src;
if (typeof cst === 'string') {
lineStarts = findLineStarts(cst);
src = cst;
} else {
if (Array.isArray(cst)) cst = cst[0];
if (cst && cst.context) {
if (!cst.lineStarts) cst.lineStarts = findLineStarts(cst.context.src);
lineStarts = cst.lineStarts;
src = cst.context.src;
}
}
return {
lineStarts,
src
};
}
/**
* @typedef {Object} LinePos - One-indexed position in the source
* @property {number} line
* @property {number} col
*/
/**
* Determine the line/col position matching a character offset.
*
* Accepts a source string or a CST document as the second parameter. With
* the latter, starting indices for lines are cached in the document as
* `lineStarts: number[]`.
*
* Returns a one-indexed `{ line, col }` location if found, or
* `undefined` otherwise.
*
* @param {number} offset
* @param {string|Document|Document[]} cst
* @returns {?LinePos}
*/
function getLinePos(offset, cst) {
if (typeof offset !== 'number' || offset < 0) return null;
const {
lineStarts,
src
} = getSrcInfo(cst);
if (!lineStarts || !src || offset > src.length) return null;
for (let i = 0; i < lineStarts.length; ++i) {
const start = lineStarts[i];
if (offset < start) {
return {
line: i,
col: offset - lineStarts[i - 1] + 1
};
}
if (offset === start) return {
line: i + 1,
col: 1
};
}
const line = lineStarts.length;
return {
line,
col: offset - lineStarts[line - 1] + 1
};
}
/**
* Get a specified line from the source.
*
* Accepts a source string or a CST document as the second parameter. With
* the latter, starting indices for lines are cached in the document as
* `lineStarts: number[]`.
*
* Returns the line as a string if found, or `null` otherwise.
*
* @param {number} line One-indexed line number
* @param {string|Document|Document[]} cst
* @returns {?string}
*/
function getLine(line, cst) {
const {
lineStarts,
src
} = getSrcInfo(cst);
if (!lineStarts || !(line >= 1) || line > lineStarts.length) return null;
const start = lineStarts[line - 1];
let end = lineStarts[line]; // undefined for last line; that's ok for slice()
while (end && end > start && src[end - 1] === '\n') --end;
return src.slice(start, end);
}
/**
* Pretty-print the starting line from the source indicated by the range `pos`
*
* Trims output to `maxWidth` chars while keeping the starting column visible,
* using `…` at either end to indicate dropped characters.
*
* Returns a two-line string (or `null`) with `\n` as separator; the second line
* will hold appropriately indented `^` marks indicating the column range.
*
* @param {Object} pos
* @param {LinePos} pos.start
* @param {LinePos} [pos.end]
* @param {string|Document|Document[]*} cst
* @param {number} [maxWidth=80]
* @returns {?string}
*/
function getPrettyContext({
start,
end
}, cst, maxWidth = 80) {
let src = getLine(start.line, cst);
if (!src) return null;
let {
col
} = start;
if (src.length > maxWidth) {
if (col <= maxWidth - 10) {
src = src.substr(0, maxWidth - 1) + '…';
} else {
const halfWidth = Math.round(maxWidth / 2);
if (src.length > col + halfWidth) src = src.substr(0, col + halfWidth - 1) + '…';
col -= src.length - maxWidth;
src = '…' + src.substr(1 - maxWidth);
}
}
let errLen = 1;
let errEnd = '';
if (end) {
if (end.line === start.line && col + (end.col - start.col) <= maxWidth + 1) {
errLen = end.col - start.col;
} else {
errLen = Math.min(src.length + 1, maxWidth) - col;
errEnd = '…';
}
}
const offset = col > 1 ? ' '.repeat(col - 1) : '';
const err = '^'.repeat(errLen);
return `${src}\n${offset}${err}${errEnd}`;
}
class Range {
static copy(orig) {
return new Range(orig.start, orig.end);
}
constructor(start, end) {
this.start = start;
this.end = end || start;
}
isEmpty() {
return typeof this.start !== 'number' || !this.end || this.end <= this.start;
}
/**
* Set `origStart` and `origEnd` to point to the original source range for
* this node, which may differ due to dropped CR characters.
*
* @param {number[]} cr - Positions of dropped CR characters
* @param {number} offset - Starting index of `cr` from the last call
* @returns {number} - The next offset, matching the one found for `origStart`
*/
setOrigRange(cr, offset) {
const {
start,
end
} = this;
if (cr.length === 0 || end <= cr[0]) {
this.origStart = start;
this.origEnd = end;
return offset;
}
let i = offset;
while (i < cr.length) {
if (cr[i] > start) break;else ++i;
}
this.origStart = start + i;
const nextOffset = i;
while (i < cr.length) {
// if end was at \n, it should now be at \r
if (cr[i] >= end) break;else ++i;
}
this.origEnd = end + i;
return nextOffset;
}
}
/** Root class of all nodes */
class Node {
static addStringTerminator(src, offset, str) {
if (str[str.length - 1] === '\n') return str;
const next = Node.endOfWhiteSpace(src, offset);
return next >= src.length || src[next] === '\n' ? str + '\n' : str;
} // ^(---|...)
static atDocumentBoundary(src, offset, sep) {
const ch0 = src[offset];
if (!ch0) return true;
const prev = src[offset - 1];
if (prev && prev !== '\n') return false;
if (sep) {
if (ch0 !== sep) return false;
} else {
if (ch0 !== Char.DIRECTIVES_END && ch0 !== Char.DOCUMENT_END) return false;
}
const ch1 = src[offset + 1];
const ch2 = src[offset + 2];
if (ch1 !== ch0 || ch2 !== ch0) return false;
const ch3 = src[offset + 3];
return !ch3 || ch3 === '\n' || ch3 === '\t' || ch3 === ' ';
}
static endOfIdentifier(src, offset) {
let ch = src[offset];
const isVerbatim = ch === '<';
const notOk = isVerbatim ? ['\n', '\t', ' ', '>'] : ['\n', '\t', ' ', '[', ']', '{', '}', ','];
while (ch && notOk.indexOf(ch) === -1) ch = src[offset += 1];
if (isVerbatim && ch === '>') offset += 1;
return offset;
}
static endOfIndent(src, offset) {
let ch = src[offset];
while (ch === ' ') ch = src[offset += 1];
return offset;
}
static endOfLine(src, offset) {
let ch = src[offset];
while (ch && ch !== '\n') ch = src[offset += 1];
return offset;
}
static endOfWhiteSpace(src, offset) {
let ch = src[offset];
while (ch === '\t' || ch === ' ') ch = src[offset += 1];
return offset;
}
static startOfLine(src, offset) {
let ch = src[offset - 1];
if (ch === '\n') return offset;
while (ch && ch !== '\n') ch = src[offset -= 1];
return offset + 1;
}
/**
* End of indentation, or null if the line's indent level is not more
* than `indent`
*
* @param {string} src
* @param {number} indent
* @param {number} lineStart
* @returns {?number}
*/
static endOfBlockIndent(src, indent, lineStart) {
const inEnd = Node.endOfIndent(src, lineStart);
if (inEnd > lineStart + indent) {
return inEnd;
} else {
const wsEnd = Node.endOfWhiteSpace(src, inEnd);
const ch = src[wsEnd];
if (!ch || ch === '\n') return wsEnd;
}
return null;
}
static atBlank(src, offset, endAsBlank) {
const ch = src[offset];
return ch === '\n' || ch === '\t' || ch === ' ' || endAsBlank && !ch;
}
static nextNodeIsIndented(ch, indentDiff, indicatorAsIndent) {
if (!ch || indentDiff < 0) return false;
if (indentDiff > 0) return true;
return indicatorAsIndent && ch === '-';
} // should be at line or string end, or at next non-whitespace char
static normalizeOffset(src, offset) {
const ch = src[offset];
return !ch ? offset : ch !== '\n' && src[offset - 1] === '\n' ? offset - 1 : Node.endOfWhiteSpace(src, offset);
} // fold single newline into space, multiple newlines to N - 1 newlines
// presumes src[offset] === '\n'
static foldNewline(src, offset, indent) {
let inCount = 0;
let error = false;
let fold = '';
let ch = src[offset + 1];
while (ch === ' ' || ch === '\t' || ch === '\n') {
switch (ch) {
case '\n':
inCount = 0;
offset += 1;
fold += '\n';
break;
case '\t':
if (inCount <= indent) error = true;
offset = Node.endOfWhiteSpace(src, offset + 2) - 1;
break;
case ' ':
inCount += 1;
offset += 1;
break;
}
ch = src[offset + 1];
}
if (!fold) fold = ' ';
if (ch && inCount <= indent) error = true;
return {
fold,
offset,
error
};
}
constructor(type, props, context) {
Object.defineProperty(this, 'context', {
value: context || null,
writable: true
});
this.error = null;
this.range = null;
this.valueRange = null;
this.props = props || [];
this.type = type;
this.value = null;
}
getPropValue(idx, key, skipKey) {
if (!this.context) return null;
const {
src
} = this.context;
const prop = this.props[idx];
return prop && src[prop.start] === key ? src.slice(prop.start + (skipKey ? 1 : 0), prop.end) : null;
}
get anchor() {
for (let i = 0; i < this.props.length; ++i) {
const anchor = this.getPropValue(i, Char.ANCHOR, true);
if (anchor != null) return anchor;
}
return null;
}
get comment() {
const comments = [];
for (let i = 0; i < this.props.length; ++i) {
const comment = this.getPropValue(i, Char.COMMENT, true);
if (comment != null) comments.push(comment);
}
return comments.length > 0 ? comments.join('\n') : null;
}
commentHasRequiredWhitespace(start) {
const {
src
} = this.context;
if (this.header && start === this.header.end) return false;
if (!this.valueRange) return false;
const {
end
} = this.valueRange;
return start !== end || Node.atBlank(src, end - 1);
}
get hasComment() {
if (this.context) {
const {
src
} = this.context;
for (let i = 0; i < this.props.length; ++i) {
if (src[this.props[i].start] === Char.COMMENT) return true;
}
}
return false;
}
get hasProps() {
if (this.context) {
const {
src
} = this.context;
for (let i = 0; i < this.props.length; ++i) {
if (src[this.props[i].start] !== Char.COMMENT) return true;
}
}
return false;
}
get includesTrailingLines() {
return false;
}
get jsonLike() {
const jsonLikeTypes = [Type.FLOW_MAP, Type.FLOW_SEQ, Type.QUOTE_DOUBLE, Type.QUOTE_SINGLE];
return jsonLikeTypes.indexOf(this.type) !== -1;
}
get rangeAsLinePos() {
if (!this.range || !this.context) return undefined;
const start = getLinePos(this.range.start, this.context.root);
if (!start) return undefined;
const end = getLinePos(this.range.end, this.context.root);
return {
start,
end
};
}
get rawValue() {
if (!this.valueRange || !this.context) return null;
const {
start,
end
} = this.valueRange;
return this.context.src.slice(start, end);
}
get tag() {
for (let i = 0; i < this.props.length; ++i) {
const tag = this.getPropValue(i, Char.TAG, false);
if (tag != null) {
if (tag[1] === '<') {
return {
verbatim: tag.slice(2, -1)
};
} else {
// eslint-disable-next-line no-unused-vars
const [_, handle, suffix] = tag.match(/^(.*!)([^!]*)$/);
return {
handle,
suffix
};
}
}
}
return null;
}
get valueRangeContainsNewline() {
if (!this.valueRange || !this.context) return false;
const {
start,
end
} = this.valueRange;
const {
src
} = this.context;
for (let i = start; i < end; ++i) {
if (src[i] === '\n') return true;
}
return false;
}
parseComment(start) {
const {
src
} = this.context;
if (src[start] === Char.COMMENT) {
const end = Node.endOfLine(src, start + 1);
const commentRange = new Range(start, end);
this.props.push(commentRange);
return end;
}
return start;
}
/**
* Populates the `origStart` and `origEnd` values of all ranges for this
* node. Extended by child classes to handle descendant nodes.
*
* @param {number[]} cr - Positions of dropped CR characters
* @param {number} offset - Starting index of `cr` from the last call
* @returns {number} - The next offset, matching the one found for `origStart`
*/
setOrigRanges(cr, offset) {
if (this.range) offset = this.range.setOrigRange(cr, offset);
if (this.valueRange) this.valueRange.setOrigRange(cr, offset);
this.props.forEach(prop => prop.setOrigRange(cr, offset));
return offset;
}
toString() {
const {
context: {
src
},
range,
value
} = this;
if (value != null) return value;
const str = src.slice(range.start, range.end);
return Node.addStringTerminator(src, range.end, str);
}
}
class YAMLError extends Error {
constructor(name, source, message) {
if (!message || !(source instanceof Node)) throw new Error(`Invalid arguments for new ${name}`);
super();
this.name = name;
this.message = message;
this.source = source;
}
makePretty() {
if (!this.source) return;
this.nodeType = this.source.type;
const cst = this.source.context && this.source.context.root;
if (typeof this.offset === 'number') {
this.range = new Range(this.offset, this.offset + 1);
const start = cst && getLinePos(this.offset, cst);
if (start) {
const end = {
line: start.line,
col: start.col + 1
};
this.linePos = {
start,
end
};
}
delete this.offset;
} else {
this.range = this.source.range;
this.linePos = this.source.rangeAsLinePos;
}
if (this.linePos) {
const {
line,
col
} = this.linePos.start;
this.message += ` at line ${line}, column ${col}`;
const ctx = cst && getPrettyContext(this.linePos, cst);
if (ctx) this.message += `:\n\n${ctx}\n`;
}
delete this.source;
}
}
class YAMLReferenceError extends YAMLError {
constructor(source, message) {
super('YAMLReferenceError', source, message);
}
}
class YAMLSemanticError extends YAMLError {
constructor(source, message) {
super('YAMLSemanticError', source, message);
}
}
class YAMLSyntaxError extends YAMLError {
constructor(source, message) {
super('YAMLSyntaxError', source, message);
}
}
class YAMLWarning extends YAMLError {
constructor(source, message) {
super('YAMLWarning', source, message);
}
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
class PlainValue extends Node {
static endOfLine(src, start, inFlow) {
let ch = src[start];
let offset = start;
while (ch && ch !== '\n') {
if (inFlow && (ch === '[' || ch === ']' || ch === '{' || ch === '}' || ch === ',')) break;
const next = src[offset + 1];
if (ch === ':' && (!next || next === '\n' || next === '\t' || next === ' ' || inFlow && next === ',')) break;
if ((ch === ' ' || ch === '\t') && next === '#') break;
offset += 1;
ch = next;
}
return offset;
}
get strValue() {
if (!this.valueRange || !this.context) return null;
let {
start,
end
} = this.valueRange;
const {
src
} = this.context;
let ch = src[end - 1];
while (start < end && (ch === '\n' || ch === '\t' || ch === ' ')) ch = src[--end - 1];
let str = '';
for (let i = start; i < end; ++i) {
const ch = src[i];
if (ch === '\n') {
const {
fold,
offset
} = Node.foldNewline(src, i, -1);
str += fold;
i = offset;
} else if (ch === ' ' || ch === '\t') {
// trim trailing whitespace
const wsStart = i;
let next = src[i + 1];
while (i < end && (next === ' ' || next === '\t')) {
i += 1;
next = src[i + 1];
}
if (next !== '\n') str += i > wsStart ? src.slice(wsStart, i + 1) : ch;
} else {
str += ch;
}
}
const ch0 = src[start];
switch (ch0) {
case '\t':
{
const msg = 'Plain value cannot start with a tab character';
const errors = [new YAMLSemanticError(this, msg)];
return {
errors,
str
};
}
case '@':
case '`':
{
const msg = `Plain value cannot start with reserved character ${ch0}`;
const errors = [new YAMLSemanticError(this, msg)];
return {
errors,
str
};
}
default:
return str;
}
}
parseBlockValue(start) {
const {
indent,
inFlow,
src
} = this.context;
let offset = start;
let valueEnd = start;
for (let ch = src[offset]; ch === '\n'; ch = src[offset]) {
if (Node.atDocumentBoundary(src, offset + 1)) break;
const end = Node.endOfBlockIndent(src, indent, offset + 1);
if (end === null || src[end] === '#') break;
if (src[end] === '\n') {
offset = end;
} else {
valueEnd = PlainValue.endOfLine(src, end, inFlow);
offset = valueEnd;
}
}
if (this.valueRange.isEmpty()) this.valueRange.start = start;
this.valueRange.end = valueEnd;
return valueEnd;
}
/**
* Parses a plain value from the source
*
* Accepted forms are:
* ```
* #comment
*
* first line
*
* first line #comment
*
* first line
* block
* lines
*
* #comment
* block
* lines
* ```
* where block lines are empty or have an indent level greater than `indent`.
*
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this scalar, may be `\n`
*/
parse(context, start) {
this.context = context;
const {
inFlow,
src
} = context;
let offset = start;
const ch = src[offset];
if (ch && ch !== '#' && ch !== '\n') {
offset = PlainValue.endOfLine(src, start, inFlow);
}
this.valueRange = new Range(start, offset);
offset = Node.endOfWhiteSpace(src, offset);
offset = this.parseComment(offset);
if (!this.hasComment || this.valueRange.isEmpty()) {
offset = this.parseBlockValue(offset);
}
return offset;
}
}
exports.Char = Char;
exports.Node = Node;
exports.PlainValue = PlainValue;
exports.Range = Range;
exports.Type = Type;
exports.YAMLError = YAMLError;
exports.YAMLReferenceError = YAMLReferenceError;
exports.YAMLSemanticError = YAMLSemanticError;
exports.YAMLSyntaxError = YAMLSyntaxError;
exports.YAMLWarning = YAMLWarning;
exports._defineProperty = _defineProperty;
exports.defaultTagPrefix = defaultTagPrefix;
exports.defaultTags = defaultTags;

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