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'use strict';
var PlainValue = require('./PlainValue-ec8e588e.js');
class BlankLine extends PlainValue.Node {
constructor() {
super(PlainValue.Type.BLANK_LINE);
}
/* istanbul ignore next */
get includesTrailingLines() {
// This is never called from anywhere, but if it were,
// this is the value it should return.
return true;
}
/**
* Parses a blank line from the source
*
* @param {ParseContext} context
* @param {number} start - Index of first \n character
* @returns {number} - Index of the character after this
*/
parse(context, start) {
this.context = context;
this.range = new PlainValue.Range(start, start + 1);
return start + 1;
}
}
class CollectionItem extends PlainValue.Node {
constructor(type, props) {
super(type, props);
this.node = null;
}
get includesTrailingLines() {
return !!this.node && this.node.includesTrailingLines;
}
/**
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this
*/
parse(context, start) {
this.context = context;
const {
parseNode,
src
} = context;
let {
atLineStart,
lineStart
} = context;
if (!atLineStart && this.type === PlainValue.Type.SEQ_ITEM) this.error = new PlainValue.YAMLSemanticError(this, 'Sequence items must not have preceding content on the same line');
const indent = atLineStart ? start - lineStart : context.indent;
let offset = PlainValue.Node.endOfWhiteSpace(src, start + 1);
let ch = src[offset];
const inlineComment = ch === '#';
const comments = [];
let blankLine = null;
while (ch === '\n' || ch === '#') {
if (ch === '#') {
const end = PlainValue.Node.endOfLine(src, offset + 1);
comments.push(new PlainValue.Range(offset, end));
offset = end;
} else {
atLineStart = true;
lineStart = offset + 1;
const wsEnd = PlainValue.Node.endOfWhiteSpace(src, lineStart);
if (src[wsEnd] === '\n' && comments.length === 0) {
blankLine = new BlankLine();
lineStart = blankLine.parse({
src
}, lineStart);
}
offset = PlainValue.Node.endOfIndent(src, lineStart);
}
ch = src[offset];
}
if (PlainValue.Node.nextNodeIsIndented(ch, offset - (lineStart + indent), this.type !== PlainValue.Type.SEQ_ITEM)) {
this.node = parseNode({
atLineStart,
inCollection: false,
indent,
lineStart,
parent: this
}, offset);
} else if (ch && lineStart > start + 1) {
offset = lineStart - 1;
}
if (this.node) {
if (blankLine) {
// Only blank lines preceding non-empty nodes are captured. Note that
// this means that collection item range start indices do not always
// increase monotonically. -- eemeli/yaml#126
const items = context.parent.items || context.parent.contents;
if (items) items.push(blankLine);
}
if (comments.length) Array.prototype.push.apply(this.props, comments);
offset = this.node.range.end;
} else {
if (inlineComment) {
const c = comments[0];
this.props.push(c);
offset = c.end;
} else {
offset = PlainValue.Node.endOfLine(src, start + 1);
}
}
const end = this.node ? this.node.valueRange.end : offset;
this.valueRange = new PlainValue.Range(start, end);
return offset;
}
setOrigRanges(cr, offset) {
offset = super.setOrigRanges(cr, offset);
return this.node ? this.node.setOrigRanges(cr, offset) : offset;
}
toString() {
const {
context: {
src
},
node,
range,
value
} = this;
if (value != null) return value;
const str = node ? src.slice(range.start, node.range.start) + String(node) : src.slice(range.start, range.end);
return PlainValue.Node.addStringTerminator(src, range.end, str);
}
}
class Comment extends PlainValue.Node {
constructor() {
super(PlainValue.Type.COMMENT);
}
/**
* Parses a comment line from the source
*
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this scalar
*/
parse(context, start) {
this.context = context;
const offset = this.parseComment(start);
this.range = new PlainValue.Range(start, offset);
return offset;
}
}
function grabCollectionEndComments(node) {
let cnode = node;
while (cnode instanceof CollectionItem) cnode = cnode.node;
if (!(cnode instanceof Collection)) return null;
const len = cnode.items.length;
let ci = -1;
for (let i = len - 1; i >= 0; --i) {
const n = cnode.items[i];
if (n.type === PlainValue.Type.COMMENT) {
// Keep sufficiently indented comments with preceding node
const {
indent,
lineStart
} = n.context;
if (indent > 0 && n.range.start >= lineStart + indent) break;
ci = i;
} else if (n.type === PlainValue.Type.BLANK_LINE) ci = i;else break;
}
if (ci === -1) return null;
const ca = cnode.items.splice(ci, len - ci);
const prevEnd = ca[0].range.start;
while (true) {
cnode.range.end = prevEnd;
if (cnode.valueRange && cnode.valueRange.end > prevEnd) cnode.valueRange.end = prevEnd;
if (cnode === node) break;
cnode = cnode.context.parent;
}
return ca;
}
class Collection extends PlainValue.Node {
static nextContentHasIndent(src, offset, indent) {
const lineStart = PlainValue.Node.endOfLine(src, offset) + 1;
offset = PlainValue.Node.endOfWhiteSpace(src, lineStart);
const ch = src[offset];
if (!ch) return false;
if (offset >= lineStart + indent) return true;
if (ch !== '#' && ch !== '\n') return false;
return Collection.nextContentHasIndent(src, offset, indent);
}
constructor(firstItem) {
super(firstItem.type === PlainValue.Type.SEQ_ITEM ? PlainValue.Type.SEQ : PlainValue.Type.MAP);
for (let i = firstItem.props.length - 1; i >= 0; --i) {
if (firstItem.props[i].start < firstItem.context.lineStart) {
// props on previous line are assumed by the collection
this.props = firstItem.props.slice(0, i + 1);
firstItem.props = firstItem.props.slice(i + 1);
const itemRange = firstItem.props[0] || firstItem.valueRange;
firstItem.range.start = itemRange.start;
break;
}
}
this.items = [firstItem];
const ec = grabCollectionEndComments(firstItem);
if (ec) Array.prototype.push.apply(this.items, ec);
}
get includesTrailingLines() {
return this.items.length > 0;
}
/**
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this
*/
parse(context, start) {
this.context = context;
const {
parseNode,
src
} = context; // It's easier to recalculate lineStart here rather than tracking down the
// last context from which to read it -- eemeli/yaml#2
let lineStart = PlainValue.Node.startOfLine(src, start);
const firstItem = this.items[0]; // First-item context needs to be correct for later comment handling
// -- eemeli/yaml#17
firstItem.context.parent = this;
this.valueRange = PlainValue.Range.copy(firstItem.valueRange);
const indent = firstItem.range.start - firstItem.context.lineStart;
let offset = start;
offset = PlainValue.Node.normalizeOffset(src, offset);
let ch = src[offset];
let atLineStart = PlainValue.Node.endOfWhiteSpace(src, lineStart) === offset;
let prevIncludesTrailingLines = false;
while (ch) {
while (ch === '\n' || ch === '#') {
if (atLineStart && ch === '\n' && !prevIncludesTrailingLines) {
const blankLine = new BlankLine();
offset = blankLine.parse({
src
}, offset);
this.valueRange.end = offset;
if (offset >= src.length) {
ch = null;
break;
}
this.items.push(blankLine);
offset -= 1; // blankLine.parse() consumes terminal newline
} else if (ch === '#') {
if (offset < lineStart + indent && !Collection.nextContentHasIndent(src, offset, indent)) {
return offset;
}
const comment = new Comment();
offset = comment.parse({
indent,
lineStart,
src
}, offset);
this.items.push(comment);
this.valueRange.end = offset;
if (offset >= src.length) {
ch = null;
break;
}
}
lineStart = offset + 1;
offset = PlainValue.Node.endOfIndent(src, lineStart);
if (PlainValue.Node.atBlank(src, offset)) {
const wsEnd = PlainValue.Node.endOfWhiteSpace(src, offset);
const next = src[wsEnd];
if (!next || next === '\n' || next === '#') {
offset = wsEnd;
}
}
ch = src[offset];
atLineStart = true;
}
if (!ch) {
break;
}
if (offset !== lineStart + indent && (atLineStart || ch !== ':')) {
if (offset < lineStart + indent) {
if (lineStart > start) offset = lineStart;
break;
} else if (!this.error) {
const msg = 'All collection items must start at the same column';
this.error = new PlainValue.YAMLSyntaxError(this, msg);
}
}
if (firstItem.type === PlainValue.Type.SEQ_ITEM) {
if (ch !== '-') {
if (lineStart > start) offset = lineStart;
break;
}
} else if (ch === '-' && !this.error) {
// map key may start with -, as long as it's followed by a non-whitespace char
const next = src[offset + 1];
if (!next || next === '\n' || next === '\t' || next === ' ') {
const msg = 'A collection cannot be both a mapping and a sequence';
this.error = new PlainValue.YAMLSyntaxError(this, msg);
}
}
const node = parseNode({
atLineStart,
inCollection: true,
indent,
lineStart,
parent: this
}, offset);
if (!node) return offset; // at next document start
this.items.push(node);
this.valueRange.end = node.valueRange.end;
offset = PlainValue.Node.normalizeOffset(src, node.range.end);
ch = src[offset];
atLineStart = false;
prevIncludesTrailingLines = node.includesTrailingLines; // Need to reset lineStart and atLineStart here if preceding node's range
// has advanced to check the current line's indentation level
// -- eemeli/yaml#10 & eemeli/yaml#38
if (ch) {
let ls = offset - 1;
let prev = src[ls];
while (prev === ' ' || prev === '\t') prev = src[--ls];
if (prev === '\n') {
lineStart = ls + 1;
atLineStart = true;
}
}
const ec = grabCollectionEndComments(node);
if (ec) Array.prototype.push.apply(this.items, ec);
}
return offset;
}
setOrigRanges(cr, offset) {
offset = super.setOrigRanges(cr, offset);
this.items.forEach(node => {
offset = node.setOrigRanges(cr, offset);
});
return offset;
}
toString() {
const {
context: {
src
},
items,
range,
value
} = this;
if (value != null) return value;
let str = src.slice(range.start, items[0].range.start) + String(items[0]);
for (let i = 1; i < items.length; ++i) {
const item = items[i];
const {
atLineStart,
indent
} = item.context;
if (atLineStart) for (let i = 0; i < indent; ++i) str += ' ';
str += String(item);
}
return PlainValue.Node.addStringTerminator(src, range.end, str);
}
}
class Directive extends PlainValue.Node {
constructor() {
super(PlainValue.Type.DIRECTIVE);
this.name = null;
}
get parameters() {
const raw = this.rawValue;
return raw ? raw.trim().split(/[ \t]+/) : [];
}
parseName(start) {
const {
src
} = this.context;
let offset = start;
let ch = src[offset];
while (ch && ch !== '\n' && ch !== '\t' && ch !== ' ') ch = src[offset += 1];
this.name = src.slice(start, offset);
return offset;
}
parseParameters(start) {
const {
src
} = this.context;
let offset = start;
let ch = src[offset];
while (ch && ch !== '\n' && ch !== '#') ch = src[offset += 1];
this.valueRange = new PlainValue.Range(start, offset);
return offset;
}
parse(context, start) {
this.context = context;
let offset = this.parseName(start + 1);
offset = this.parseParameters(offset);
offset = this.parseComment(offset);
this.range = new PlainValue.Range(start, offset);
return offset;
}
}
class Document extends PlainValue.Node {
static startCommentOrEndBlankLine(src, start) {
const offset = PlainValue.Node.endOfWhiteSpace(src, start);
const ch = src[offset];
return ch === '#' || ch === '\n' ? offset : start;
}
constructor() {
super(PlainValue.Type.DOCUMENT);
this.directives = null;
this.contents = null;
this.directivesEndMarker = null;
this.documentEndMarker = null;
}
parseDirectives(start) {
const {
src
} = this.context;
this.directives = [];
let atLineStart = true;
let hasDirectives = false;
let offset = start;
while (!PlainValue.Node.atDocumentBoundary(src, offset, PlainValue.Char.DIRECTIVES_END)) {
offset = Document.startCommentOrEndBlankLine(src, offset);
switch (src[offset]) {
case '\n':
if (atLineStart) {
const blankLine = new BlankLine();
offset = blankLine.parse({
src
}, offset);
if (offset < src.length) {
this.directives.push(blankLine);
}
} else {
offset += 1;
atLineStart = true;
}
break;
case '#':
{
const comment = new Comment();
offset = comment.parse({
src
}, offset);
this.directives.push(comment);
atLineStart = false;
}
break;
case '%':
{
const directive = new Directive();
offset = directive.parse({
parent: this,
src
}, offset);
this.directives.push(directive);
hasDirectives = true;
atLineStart = false;
}
break;
default:
if (hasDirectives) {
this.error = new PlainValue.YAMLSemanticError(this, 'Missing directives-end indicator line');
} else if (this.directives.length > 0) {
this.contents = this.directives;
this.directives = [];
}
return offset;
}
}
if (src[offset]) {
this.directivesEndMarker = new PlainValue.Range(offset, offset + 3);
return offset + 3;
}
if (hasDirectives) {
this.error = new PlainValue.YAMLSemanticError(this, 'Missing directives-end indicator line');
} else if (this.directives.length > 0) {
this.contents = this.directives;
this.directives = [];
}
return offset;
}
parseContents(start) {
const {
parseNode,
src
} = this.context;
if (!this.contents) this.contents = [];
let lineStart = start;
while (src[lineStart - 1] === '-') lineStart -= 1;
let offset = PlainValue.Node.endOfWhiteSpace(src, start);
let atLineStart = lineStart === start;
this.valueRange = new PlainValue.Range(offset);
while (!PlainValue.Node.atDocumentBoundary(src, offset, PlainValue.Char.DOCUMENT_END)) {
switch (src[offset]) {
case '\n':
if (atLineStart) {
const blankLine = new BlankLine();
offset = blankLine.parse({
src
}, offset);
if (offset < src.length) {
this.contents.push(blankLine);
}
} else {
offset += 1;
atLineStart = true;
}
lineStart = offset;
break;
case '#':
{
const comment = new Comment();
offset = comment.parse({
src
}, offset);
this.contents.push(comment);
atLineStart = false;
}
break;
default:
{
const iEnd = PlainValue.Node.endOfIndent(src, offset);
const context = {
atLineStart,
indent: -1,
inFlow: false,
inCollection: false,
lineStart,
parent: this
};
const node = parseNode(context, iEnd);
if (!node) return this.valueRange.end = iEnd; // at next document start
this.contents.push(node);
offset = node.range.end;
atLineStart = false;
const ec = grabCollectionEndComments(node);
if (ec) Array.prototype.push.apply(this.contents, ec);
}
}
offset = Document.startCommentOrEndBlankLine(src, offset);
}
this.valueRange.end = offset;
if (src[offset]) {
this.documentEndMarker = new PlainValue.Range(offset, offset + 3);
offset += 3;
if (src[offset]) {
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
if (src[offset] === '#') {
const comment = new Comment();
offset = comment.parse({
src
}, offset);
this.contents.push(comment);
}
switch (src[offset]) {
case '\n':
offset += 1;
break;
case undefined:
break;
default:
this.error = new PlainValue.YAMLSyntaxError(this, 'Document end marker line cannot have a non-comment suffix');
}
}
}
return offset;
}
/**
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this
*/
parse(context, start) {
context.root = this;
this.context = context;
const {
src
} = context;
let offset = src.charCodeAt(start) === 0xfeff ? start + 1 : start; // skip BOM
offset = this.parseDirectives(offset);
offset = this.parseContents(offset);
return offset;
}
setOrigRanges(cr, offset) {
offset = super.setOrigRanges(cr, offset);
this.directives.forEach(node => {
offset = node.setOrigRanges(cr, offset);
});
if (this.directivesEndMarker) offset = this.directivesEndMarker.setOrigRange(cr, offset);
this.contents.forEach(node => {
offset = node.setOrigRanges(cr, offset);
});
if (this.documentEndMarker) offset = this.documentEndMarker.setOrigRange(cr, offset);
return offset;
}
toString() {
const {
contents,
directives,
value
} = this;
if (value != null) return value;
let str = directives.join('');
if (contents.length > 0) {
if (directives.length > 0 || contents[0].type === PlainValue.Type.COMMENT) str += '---\n';
str += contents.join('');
}
if (str[str.length - 1] !== '\n') str += '\n';
return str;
}
}
class Alias extends PlainValue.Node {
/**
* Parses an *alias from the source
*
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this scalar
*/
parse(context, start) {
this.context = context;
const {
src
} = context;
let offset = PlainValue.Node.endOfIdentifier(src, start + 1);
this.valueRange = new PlainValue.Range(start + 1, offset);
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
offset = this.parseComment(offset);
return offset;
}
}
const Chomp = {
CLIP: 'CLIP',
KEEP: 'KEEP',
STRIP: 'STRIP'
};
class BlockValue extends PlainValue.Node {
constructor(type, props) {
super(type, props);
this.blockIndent = null;
this.chomping = Chomp.CLIP;
this.header = null;
}
get includesTrailingLines() {
return this.chomping === Chomp.KEEP;
}
get strValue() {
if (!this.valueRange || !this.context) return null;
let {
start,
end
} = this.valueRange;
const {
indent,
src
} = this.context;
if (this.valueRange.isEmpty()) return '';
let lastNewLine = null;
let ch = src[end - 1];
while (ch === '\n' || ch === '\t' || ch === ' ') {
end -= 1;
if (end <= start) {
if (this.chomping === Chomp.KEEP) break;else return ''; // probably never happens
}
if (ch === '\n') lastNewLine = end;
ch = src[end - 1];
}
let keepStart = end + 1;
if (lastNewLine) {
if (this.chomping === Chomp.KEEP) {
keepStart = lastNewLine;
end = this.valueRange.end;
} else {
end = lastNewLine;
}
}
const bi = indent + this.blockIndent;
const folded = this.type === PlainValue.Type.BLOCK_FOLDED;
let atStart = true;
let str = '';
let sep = '';
let prevMoreIndented = false;
for (let i = start; i < end; ++i) {
for (let j = 0; j < bi; ++j) {
if (src[i] !== ' ') break;
i += 1;
}
const ch = src[i];
if (ch === '\n') {
if (sep === '\n') str += '\n';else sep = '\n';
} else {
const lineEnd = PlainValue.Node.endOfLine(src, i);
const line = src.slice(i, lineEnd);
i = lineEnd;
if (folded && (ch === ' ' || ch === '\t') && i < keepStart) {
if (sep === ' ') sep = '\n';else if (!prevMoreIndented && !atStart && sep === '\n') sep = '\n\n';
str += sep + line; //+ ((lineEnd < end && src[lineEnd]) || '')
sep = lineEnd < end && src[lineEnd] || '';
prevMoreIndented = true;
} else {
str += sep + line;
sep = folded && i < keepStart ? ' ' : '\n';
prevMoreIndented = false;
}
if (atStart && line !== '') atStart = false;
}
}
return this.chomping === Chomp.STRIP ? str : str + '\n';
}
parseBlockHeader(start) {
const {
src
} = this.context;
let offset = start + 1;
let bi = '';
while (true) {
const ch = src[offset];
switch (ch) {
case '-':
this.chomping = Chomp.STRIP;
break;
case '+':
this.chomping = Chomp.KEEP;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
bi += ch;
break;
default:
this.blockIndent = Number(bi) || null;
this.header = new PlainValue.Range(start, offset);
return offset;
}
offset += 1;
}
}
parseBlockValue(start) {
const {
indent,
src
} = this.context;
const explicit = !!this.blockIndent;
let offset = start;
let valueEnd = start;
let minBlockIndent = 1;
for (let ch = src[offset]; ch === '\n'; ch = src[offset]) {
offset += 1;
if (PlainValue.Node.atDocumentBoundary(src, offset)) break;
const end = PlainValue.Node.endOfBlockIndent(src, indent, offset); // should not include tab?
if (end === null) break;
const ch = src[end];
const lineIndent = end - (offset + indent);
if (!this.blockIndent) {
// no explicit block indent, none yet detected
if (src[end] !== '\n') {
// first line with non-whitespace content
if (lineIndent < minBlockIndent) {
const msg = 'Block scalars with more-indented leading empty lines must use an explicit indentation indicator';
this.error = new PlainValue.YAMLSemanticError(this, msg);
}
this.blockIndent = lineIndent;
} else if (lineIndent > minBlockIndent) {
// empty line with more whitespace
minBlockIndent = lineIndent;
}
} else if (ch && ch !== '\n' && lineIndent < this.blockIndent) {
if (src[end] === '#') break;
if (!this.error) {
const src = explicit ? 'explicit indentation indicator' : 'first line';
const msg = `Block scalars must not be less indented than their ${src}`;
this.error = new PlainValue.YAMLSemanticError(this, msg);
}
}
if (src[end] === '\n') {
offset = end;
} else {
offset = valueEnd = PlainValue.Node.endOfLine(src, end);
}
}
if (this.chomping !== Chomp.KEEP) {
offset = src[valueEnd] ? valueEnd + 1 : valueEnd;
}
this.valueRange = new PlainValue.Range(start + 1, offset);
return offset;
}
/**
* Parses a block value from the source
*
* Accepted forms are:
* ```
* BS
* block
* lines
*
* BS #comment
* block
* lines
* ```
* where the block style BS matches the regexp `[|>][-+1-9]*` and 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 block
*/
parse(context, start) {
this.context = context;
const {
src
} = context;
let offset = this.parseBlockHeader(start);
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
offset = this.parseComment(offset);
offset = this.parseBlockValue(offset);
return offset;
}
setOrigRanges(cr, offset) {
offset = super.setOrigRanges(cr, offset);
return this.header ? this.header.setOrigRange(cr, offset) : offset;
}
}
class FlowCollection extends PlainValue.Node {
constructor(type, props) {
super(type, props);
this.items = null;
}
prevNodeIsJsonLike(idx = this.items.length) {
const node = this.items[idx - 1];
return !!node && (node.jsonLike || node.type === PlainValue.Type.COMMENT && this.prevNodeIsJsonLike(idx - 1));
}
/**
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this
*/
parse(context, start) {
this.context = context;
const {
parseNode,
src
} = context;
let {
indent,
lineStart
} = context;
let char = src[start]; // { or [
this.items = [{
char,
offset: start
}];
let offset = PlainValue.Node.endOfWhiteSpace(src, start + 1);
char = src[offset];
while (char && char !== ']' && char !== '}') {
switch (char) {
case '\n':
{
lineStart = offset + 1;
const wsEnd = PlainValue.Node.endOfWhiteSpace(src, lineStart);
if (src[wsEnd] === '\n') {
const blankLine = new BlankLine();
lineStart = blankLine.parse({
src
}, lineStart);
this.items.push(blankLine);
}
offset = PlainValue.Node.endOfIndent(src, lineStart);
if (offset <= lineStart + indent) {
char = src[offset];
if (offset < lineStart + indent || char !== ']' && char !== '}') {
const msg = 'Insufficient indentation in flow collection';
this.error = new PlainValue.YAMLSemanticError(this, msg);
}
}
}
break;
case ',':
{
this.items.push({
char,
offset
});
offset += 1;
}
break;
case '#':
{
const comment = new Comment();
offset = comment.parse({
src
}, offset);
this.items.push(comment);
}
break;
case '?':
case ':':
{
const next = src[offset + 1];
if (next === '\n' || next === '\t' || next === ' ' || next === ',' || // in-flow : after JSON-like key does not need to be followed by whitespace
char === ':' && this.prevNodeIsJsonLike()) {
this.items.push({
char,
offset
});
offset += 1;
break;
}
}
// fallthrough
default:
{
const node = parseNode({
atLineStart: false,
inCollection: false,
inFlow: true,
indent: -1,
lineStart,
parent: this
}, offset);
if (!node) {
// at next document start
this.valueRange = new PlainValue.Range(start, offset);
return offset;
}
this.items.push(node);
offset = PlainValue.Node.normalizeOffset(src, node.range.end);
}
}
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
char = src[offset];
}
this.valueRange = new PlainValue.Range(start, offset + 1);
if (char) {
this.items.push({
char,
offset
});
offset = PlainValue.Node.endOfWhiteSpace(src, offset + 1);
offset = this.parseComment(offset);
}
return offset;
}
setOrigRanges(cr, offset) {
offset = super.setOrigRanges(cr, offset);
this.items.forEach(node => {
if (node instanceof PlainValue.Node) {
offset = node.setOrigRanges(cr, offset);
} else if (cr.length === 0) {
node.origOffset = node.offset;
} else {
let i = offset;
while (i < cr.length) {
if (cr[i] > node.offset) break;else ++i;
}
node.origOffset = node.offset + i;
offset = i;
}
});
return offset;
}
toString() {
const {
context: {
src
},
items,
range,
value
} = this;
if (value != null) return value;
const nodes = items.filter(item => item instanceof PlainValue.Node);
let str = '';
let prevEnd = range.start;
nodes.forEach(node => {
const prefix = src.slice(prevEnd, node.range.start);
prevEnd = node.range.end;
str += prefix + String(node);
if (str[str.length - 1] === '\n' && src[prevEnd - 1] !== '\n' && src[prevEnd] === '\n') {
// Comment range does not include the terminal newline, but its
// stringified value does. Without this fix, newlines at comment ends
// get duplicated.
prevEnd += 1;
}
});
str += src.slice(prevEnd, range.end);
return PlainValue.Node.addStringTerminator(src, range.end, str);
}
}
class QuoteDouble extends PlainValue.Node {
static endOfQuote(src, offset) {
let ch = src[offset];
while (ch && ch !== '"') {
offset += ch === '\\' ? 2 : 1;
ch = src[offset];
}
return offset + 1;
}
/**
* @returns {string | { str: string, errors: YAMLSyntaxError[] }}
*/
get strValue() {
if (!this.valueRange || !this.context) return null;
const errors = [];
const {
start,
end
} = this.valueRange;
const {
indent,
src
} = this.context;
if (src[end - 1] !== '"') errors.push(new PlainValue.YAMLSyntaxError(this, 'Missing closing "quote')); // Using String#replace is too painful with escaped newlines preceded by
// escaped backslashes; also, this should be faster.
let str = '';
for (let i = start + 1; i < end - 1; ++i) {
const ch = src[i];
if (ch === '\n') {
if (PlainValue.Node.atDocumentBoundary(src, i + 1)) errors.push(new PlainValue.YAMLSemanticError(this, 'Document boundary indicators are not allowed within string values'));
const {
fold,
offset,
error
} = PlainValue.Node.foldNewline(src, i, indent);
str += fold;
i = offset;
if (error) errors.push(new PlainValue.YAMLSemanticError(this, 'Multi-line double-quoted string needs to be sufficiently indented'));
} else if (ch === '\\') {
i += 1;
switch (src[i]) {
case '0':
str += '\0';
break;
// null character
case 'a':
str += '\x07';
break;
// bell character
case 'b':
str += '\b';
break;
// backspace
case 'e':
str += '\x1b';
break;
// escape character
case 'f':
str += '\f';
break;
// form feed
case 'n':
str += '\n';
break;
// line feed
case 'r':
str += '\r';
break;
// carriage return
case 't':
str += '\t';
break;
// horizontal tab
case 'v':
str += '\v';
break;
// vertical tab
case 'N':
str += '\u0085';
break;
// Unicode next line
case '_':
str += '\u00a0';
break;
// Unicode non-breaking space
case 'L':
str += '\u2028';
break;
// Unicode line separator
case 'P':
str += '\u2029';
break;
// Unicode paragraph separator
case ' ':
str += ' ';
break;
case '"':
str += '"';
break;
case '/':
str += '/';
break;
case '\\':
str += '\\';
break;
case '\t':
str += '\t';
break;
case 'x':
str += this.parseCharCode(i + 1, 2, errors);
i += 2;
break;
case 'u':
str += this.parseCharCode(i + 1, 4, errors);
i += 4;
break;
case 'U':
str += this.parseCharCode(i + 1, 8, errors);
i += 8;
break;
case '\n':
// skip escaped newlines, but still trim the following line
while (src[i + 1] === ' ' || src[i + 1] === '\t') i += 1;
break;
default:
errors.push(new PlainValue.YAMLSyntaxError(this, `Invalid escape sequence ${src.substr(i - 1, 2)}`));
str += '\\' + src[i];
}
} else if (ch === ' ' || ch === '\t') {
// trim trailing whitespace
const wsStart = i;
let next = src[i + 1];
while (next === ' ' || next === '\t') {
i += 1;
next = src[i + 1];
}
if (next !== '\n') str += i > wsStart ? src.slice(wsStart, i + 1) : ch;
} else {
str += ch;
}
}
return errors.length > 0 ? {
errors,
str
} : str;
}
parseCharCode(offset, length, errors) {
const {
src
} = this.context;
const cc = src.substr(offset, length);
const ok = cc.length === length && /^[0-9a-fA-F]+$/.test(cc);
const code = ok ? parseInt(cc, 16) : NaN;
if (isNaN(code)) {
errors.push(new PlainValue.YAMLSyntaxError(this, `Invalid escape sequence ${src.substr(offset - 2, length + 2)}`));
return src.substr(offset - 2, length + 2);
}
return String.fromCodePoint(code);
}
/**
* Parses a "double quoted" value from the source
*
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this scalar
*/
parse(context, start) {
this.context = context;
const {
src
} = context;
let offset = QuoteDouble.endOfQuote(src, start + 1);
this.valueRange = new PlainValue.Range(start, offset);
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
offset = this.parseComment(offset);
return offset;
}
}
class QuoteSingle extends PlainValue.Node {
static endOfQuote(src, offset) {
let ch = src[offset];
while (ch) {
if (ch === "'") {
if (src[offset + 1] !== "'") break;
ch = src[offset += 2];
} else {
ch = src[offset += 1];
}
}
return offset + 1;
}
/**
* @returns {string | { str: string, errors: YAMLSyntaxError[] }}
*/
get strValue() {
if (!this.valueRange || !this.context) return null;
const errors = [];
const {
start,
end
} = this.valueRange;
const {
indent,
src
} = this.context;
if (src[end - 1] !== "'") errors.push(new PlainValue.YAMLSyntaxError(this, "Missing closing 'quote"));
let str = '';
for (let i = start + 1; i < end - 1; ++i) {
const ch = src[i];
if (ch === '\n') {
if (PlainValue.Node.atDocumentBoundary(src, i + 1)) errors.push(new PlainValue.YAMLSemanticError(this, 'Document boundary indicators are not allowed within string values'));
const {
fold,
offset,
error
} = PlainValue.Node.foldNewline(src, i, indent);
str += fold;
i = offset;
if (error) errors.push(new PlainValue.YAMLSemanticError(this, 'Multi-line single-quoted string needs to be sufficiently indented'));
} else if (ch === "'") {
str += ch;
i += 1;
if (src[i] !== "'") errors.push(new PlainValue.YAMLSyntaxError(this, 'Unescaped single quote? This should not happen.'));
} else if (ch === ' ' || ch === '\t') {
// trim trailing whitespace
const wsStart = i;
let next = src[i + 1];
while (next === ' ' || next === '\t') {
i += 1;
next = src[i + 1];
}
if (next !== '\n') str += i > wsStart ? src.slice(wsStart, i + 1) : ch;
} else {
str += ch;
}
}
return errors.length > 0 ? {
errors,
str
} : str;
}
/**
* Parses a 'single quoted' value from the source
*
* @param {ParseContext} context
* @param {number} start - Index of first character
* @returns {number} - Index of the character after this scalar
*/
parse(context, start) {
this.context = context;
const {
src
} = context;
let offset = QuoteSingle.endOfQuote(src, start + 1);
this.valueRange = new PlainValue.Range(start, offset);
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
offset = this.parseComment(offset);
return offset;
}
}
function createNewNode(type, props) {
switch (type) {
case PlainValue.Type.ALIAS:
return new Alias(type, props);
case PlainValue.Type.BLOCK_FOLDED:
case PlainValue.Type.BLOCK_LITERAL:
return new BlockValue(type, props);
case PlainValue.Type.FLOW_MAP:
case PlainValue.Type.FLOW_SEQ:
return new FlowCollection(type, props);
case PlainValue.Type.MAP_KEY:
case PlainValue.Type.MAP_VALUE:
case PlainValue.Type.SEQ_ITEM:
return new CollectionItem(type, props);
case PlainValue.Type.COMMENT:
case PlainValue.Type.PLAIN:
return new PlainValue.PlainValue(type, props);
case PlainValue.Type.QUOTE_DOUBLE:
return new QuoteDouble(type, props);
case PlainValue.Type.QUOTE_SINGLE:
return new QuoteSingle(type, props);
/* istanbul ignore next */
default:
return null;
// should never happen
}
}
/**
* @param {boolean} atLineStart - Node starts at beginning of line
* @param {boolean} inFlow - true if currently in a flow context
* @param {boolean} inCollection - true if currently in a collection context
* @param {number} indent - Current level of indentation
* @param {number} lineStart - Start of the current line
* @param {Node} parent - The parent of the node
* @param {string} src - Source of the YAML document
*/
class ParseContext {
static parseType(src, offset, inFlow) {
switch (src[offset]) {
case '*':
return PlainValue.Type.ALIAS;
case '>':
return PlainValue.Type.BLOCK_FOLDED;
case '|':
return PlainValue.Type.BLOCK_LITERAL;
case '{':
return PlainValue.Type.FLOW_MAP;
case '[':
return PlainValue.Type.FLOW_SEQ;
case '?':
return !inFlow && PlainValue.Node.atBlank(src, offset + 1, true) ? PlainValue.Type.MAP_KEY : PlainValue.Type.PLAIN;
case ':':
return !inFlow && PlainValue.Node.atBlank(src, offset + 1, true) ? PlainValue.Type.MAP_VALUE : PlainValue.Type.PLAIN;
case '-':
return !inFlow && PlainValue.Node.atBlank(src, offset + 1, true) ? PlainValue.Type.SEQ_ITEM : PlainValue.Type.PLAIN;
case '"':
return PlainValue.Type.QUOTE_DOUBLE;
case "'":
return PlainValue.Type.QUOTE_SINGLE;
default:
return PlainValue.Type.PLAIN;
}
}
constructor(orig = {}, {
atLineStart,
inCollection,
inFlow,
indent,
lineStart,
parent
} = {}) {
PlainValue._defineProperty(this, "parseNode", (overlay, start) => {
if (PlainValue.Node.atDocumentBoundary(this.src, start)) return null;
const context = new ParseContext(this, overlay);
const {
props,
type,
valueStart
} = context.parseProps(start);
const node = createNewNode(type, props);
let offset = node.parse(context, valueStart);
node.range = new PlainValue.Range(start, offset);
/* istanbul ignore if */
if (offset <= start) {
// This should never happen, but if it does, let's make sure to at least
// step one character forward to avoid a busy loop.
node.error = new Error(`Node#parse consumed no characters`);
node.error.parseEnd = offset;
node.error.source = node;
node.range.end = start + 1;
}
if (context.nodeStartsCollection(node)) {
if (!node.error && !context.atLineStart && context.parent.type === PlainValue.Type.DOCUMENT) {
node.error = new PlainValue.YAMLSyntaxError(node, 'Block collection must not have preceding content here (e.g. directives-end indicator)');
}
const collection = new Collection(node);
offset = collection.parse(new ParseContext(context), offset);
collection.range = new PlainValue.Range(start, offset);
return collection;
}
return node;
});
this.atLineStart = atLineStart != null ? atLineStart : orig.atLineStart || false;
this.inCollection = inCollection != null ? inCollection : orig.inCollection || false;
this.inFlow = inFlow != null ? inFlow : orig.inFlow || false;
this.indent = indent != null ? indent : orig.indent;
this.lineStart = lineStart != null ? lineStart : orig.lineStart;
this.parent = parent != null ? parent : orig.parent || {};
this.root = orig.root;
this.src = orig.src;
}
nodeStartsCollection(node) {
const {
inCollection,
inFlow,
src
} = this;
if (inCollection || inFlow) return false;
if (node instanceof CollectionItem) return true; // check for implicit key
let offset = node.range.end;
if (src[offset] === '\n' || src[offset - 1] === '\n') return false;
offset = PlainValue.Node.endOfWhiteSpace(src, offset);
return src[offset] === ':';
} // Anchor and tag are before type, which determines the node implementation
// class; hence this intermediate step.
parseProps(offset) {
const {
inFlow,
parent,
src
} = this;
const props = [];
let lineHasProps = false;
offset = this.atLineStart ? PlainValue.Node.endOfIndent(src, offset) : PlainValue.Node.endOfWhiteSpace(src, offset);
let ch = src[offset];
while (ch === PlainValue.Char.ANCHOR || ch === PlainValue.Char.COMMENT || ch === PlainValue.Char.TAG || ch === '\n') {
if (ch === '\n') {
let inEnd = offset;
let lineStart;
do {
lineStart = inEnd + 1;
inEnd = PlainValue.Node.endOfIndent(src, lineStart);
} while (src[inEnd] === '\n');
const indentDiff = inEnd - (lineStart + this.indent);
const noIndicatorAsIndent = parent.type === PlainValue.Type.SEQ_ITEM && parent.context.atLineStart;
if (src[inEnd] !== '#' && !PlainValue.Node.nextNodeIsIndented(src[inEnd], indentDiff, !noIndicatorAsIndent)) break;
this.atLineStart = true;
this.lineStart = lineStart;
lineHasProps = false;
offset = inEnd;
} else if (ch === PlainValue.Char.COMMENT) {
const end = PlainValue.Node.endOfLine(src, offset + 1);
props.push(new PlainValue.Range(offset, end));
offset = end;
} else {
let end = PlainValue.Node.endOfIdentifier(src, offset + 1);
if (ch === PlainValue.Char.TAG && src[end] === ',' && /^[a-zA-Z0-9-]+\.[a-zA-Z0-9-]+,\d\d\d\d(-\d\d){0,2}\/\S/.test(src.slice(offset + 1, end + 13))) {
// Let's presume we're dealing with a YAML 1.0 domain tag here, rather
// than an empty but 'foo.bar' private-tagged node in a flow collection
// followed without whitespace by a plain string starting with a year
// or date divided by something.
end = PlainValue.Node.endOfIdentifier(src, end + 5);
}
props.push(new PlainValue.Range(offset, end));
lineHasProps = true;
offset = PlainValue.Node.endOfWhiteSpace(src, end);
}
ch = src[offset];
} // '- &a : b' has an anchor on an empty node
if (lineHasProps && ch === ':' && PlainValue.Node.atBlank(src, offset + 1, true)) offset -= 1;
const type = ParseContext.parseType(src, offset, inFlow);
return {
props,
type,
valueStart: offset
};
}
/**
* Parses a node from the source
* @param {ParseContext} overlay
* @param {number} start - Index of first non-whitespace character for the node
* @returns {?Node} - null if at a document boundary
*/
}
// Published as 'yaml/parse-cst'
function parse(src) {
const cr = [];
if (src.indexOf('\r') !== -1) {
src = src.replace(/\r\n?/g, (match, offset) => {
if (match.length > 1) cr.push(offset);
return '\n';
});
}
const documents = [];
let offset = 0;
do {
const doc = new Document();
const context = new ParseContext({
src
});
offset = doc.parse(context, offset);
documents.push(doc);
} while (offset < src.length);
documents.setOrigRanges = () => {
if (cr.length === 0) return false;
for (let i = 1; i < cr.length; ++i) cr[i] -= i;
let crOffset = 0;
for (let i = 0; i < documents.length; ++i) {
crOffset = documents[i].setOrigRanges(cr, crOffset);
}
cr.splice(0, cr.length);
return true;
};
documents.toString = () => documents.join('...\n');
return documents;
}
exports.parse = parse;