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Anton Medvedev 2023-01-10 16:49:41 +01:00
parent e1f786311a
commit 554eb0b122
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64
node_modules/yaml/dist/parse/cst-scalar.d.ts generated vendored Normal file
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import { ErrorCode } from '../errors.js';
import { Range } from '../nodes/Node.js';
import type { Scalar } from '../nodes/Scalar.js';
import type { BlockScalar, FlowScalar, SourceToken, Token } from './cst.js';
/**
* If `token` is a CST flow or block scalar, determine its string value and a few other attributes.
* Otherwise, return `null`.
*/
export declare function resolveAsScalar(token: FlowScalar | BlockScalar, strict?: boolean, onError?: (offset: number, code: ErrorCode, message: string) => void): {
value: string;
type: Scalar.Type | null;
comment: string;
range: Range;
};
export declare function resolveAsScalar(token: Token | null | undefined, strict?: boolean, onError?: (offset: number, code: ErrorCode, message: string) => void): {
value: string;
type: Scalar.Type | null;
comment: string;
range: Range;
} | null;
/**
* Create a new scalar token with `value`
*
* Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,
* as this function does not support any schema operations and won't check for such conflicts.
*
* @param value The string representation of the value, which will have its content properly indented.
* @param context.end Comments and whitespace after the end of the value, or after the block scalar header. If undefined, a newline will be added.
* @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.
* @param context.indent The indent level of the token.
* @param context.inFlow Is this scalar within a flow collection? This may affect the resolved type of the token's value.
* @param context.offset The offset position of the token.
* @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.
*/
export declare function createScalarToken(value: string, context: {
end?: SourceToken[];
implicitKey?: boolean;
indent: number;
inFlow?: boolean;
offset?: number;
type?: Scalar.Type;
}): BlockScalar | FlowScalar;
/**
* Set the value of `token` to the given string `value`, overwriting any previous contents and type that it may have.
*
* Best efforts are made to retain any comments previously associated with the `token`,
* though all contents within a collection's `items` will be overwritten.
*
* Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,
* as this function does not support any schema operations and won't check for such conflicts.
*
* @param token Any token. If it does not include an `indent` value, the value will be stringified as if it were an implicit key.
* @param value The string representation of the value, which will have its content properly indented.
* @param context.afterKey In most cases, values after a key should have an additional level of indentation.
* @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.
* @param context.inFlow Being within a flow collection may affect the resolved type of the token's value.
* @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.
*/
export declare function setScalarValue(token: Token, value: string, context?: {
afterKey?: boolean;
implicitKey?: boolean;
inFlow?: boolean;
type?: Scalar.Type;
}): void;

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node_modules/yaml/dist/parse/cst-scalar.js generated vendored Normal file
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'use strict';
var resolveBlockScalar = require('../compose/resolve-block-scalar.js');
var resolveFlowScalar = require('../compose/resolve-flow-scalar.js');
var errors = require('../errors.js');
var stringifyString = require('../stringify/stringifyString.js');
function resolveAsScalar(token, strict = true, onError) {
if (token) {
const _onError = (pos, code, message) => {
const offset = typeof pos === 'number' ? pos : Array.isArray(pos) ? pos[0] : pos.offset;
if (onError)
onError(offset, code, message);
else
throw new errors.YAMLParseError([offset, offset + 1], code, message);
};
switch (token.type) {
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar':
return resolveFlowScalar.resolveFlowScalar(token, strict, _onError);
case 'block-scalar':
return resolveBlockScalar.resolveBlockScalar(token, strict, _onError);
}
}
return null;
}
/**
* Create a new scalar token with `value`
*
* Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,
* as this function does not support any schema operations and won't check for such conflicts.
*
* @param value The string representation of the value, which will have its content properly indented.
* @param context.end Comments and whitespace after the end of the value, or after the block scalar header. If undefined, a newline will be added.
* @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.
* @param context.indent The indent level of the token.
* @param context.inFlow Is this scalar within a flow collection? This may affect the resolved type of the token's value.
* @param context.offset The offset position of the token.
* @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.
*/
function createScalarToken(value, context) {
const { implicitKey = false, indent, inFlow = false, offset = -1, type = 'PLAIN' } = context;
const source = stringifyString.stringifyString({ type, value }, {
implicitKey,
indent: indent > 0 ? ' '.repeat(indent) : '',
inFlow,
options: { blockQuote: true, lineWidth: -1 }
});
const end = context.end ?? [
{ type: 'newline', offset: -1, indent, source: '\n' }
];
switch (source[0]) {
case '|':
case '>': {
const he = source.indexOf('\n');
const head = source.substring(0, he);
const body = source.substring(he + 1) + '\n';
const props = [
{ type: 'block-scalar-header', offset, indent, source: head }
];
if (!addEndtoBlockProps(props, end))
props.push({ type: 'newline', offset: -1, indent, source: '\n' });
return { type: 'block-scalar', offset, indent, props, source: body };
}
case '"':
return { type: 'double-quoted-scalar', offset, indent, source, end };
case "'":
return { type: 'single-quoted-scalar', offset, indent, source, end };
default:
return { type: 'scalar', offset, indent, source, end };
}
}
/**
* Set the value of `token` to the given string `value`, overwriting any previous contents and type that it may have.
*
* Best efforts are made to retain any comments previously associated with the `token`,
* though all contents within a collection's `items` will be overwritten.
*
* Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,
* as this function does not support any schema operations and won't check for such conflicts.
*
* @param token Any token. If it does not include an `indent` value, the value will be stringified as if it were an implicit key.
* @param value The string representation of the value, which will have its content properly indented.
* @param context.afterKey In most cases, values after a key should have an additional level of indentation.
* @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.
* @param context.inFlow Being within a flow collection may affect the resolved type of the token's value.
* @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.
*/
function setScalarValue(token, value, context = {}) {
let { afterKey = false, implicitKey = false, inFlow = false, type } = context;
let indent = 'indent' in token ? token.indent : null;
if (afterKey && typeof indent === 'number')
indent += 2;
if (!type)
switch (token.type) {
case 'single-quoted-scalar':
type = 'QUOTE_SINGLE';
break;
case 'double-quoted-scalar':
type = 'QUOTE_DOUBLE';
break;
case 'block-scalar': {
const header = token.props[0];
if (header.type !== 'block-scalar-header')
throw new Error('Invalid block scalar header');
type = header.source[0] === '>' ? 'BLOCK_FOLDED' : 'BLOCK_LITERAL';
break;
}
default:
type = 'PLAIN';
}
const source = stringifyString.stringifyString({ type, value }, {
implicitKey: implicitKey || indent === null,
indent: indent !== null && indent > 0 ? ' '.repeat(indent) : '',
inFlow,
options: { blockQuote: true, lineWidth: -1 }
});
switch (source[0]) {
case '|':
case '>':
setBlockScalarValue(token, source);
break;
case '"':
setFlowScalarValue(token, source, 'double-quoted-scalar');
break;
case "'":
setFlowScalarValue(token, source, 'single-quoted-scalar');
break;
default:
setFlowScalarValue(token, source, 'scalar');
}
}
function setBlockScalarValue(token, source) {
const he = source.indexOf('\n');
const head = source.substring(0, he);
const body = source.substring(he + 1) + '\n';
if (token.type === 'block-scalar') {
const header = token.props[0];
if (header.type !== 'block-scalar-header')
throw new Error('Invalid block scalar header');
header.source = head;
token.source = body;
}
else {
const { offset } = token;
const indent = 'indent' in token ? token.indent : -1;
const props = [
{ type: 'block-scalar-header', offset, indent, source: head }
];
if (!addEndtoBlockProps(props, 'end' in token ? token.end : undefined))
props.push({ type: 'newline', offset: -1, indent, source: '\n' });
for (const key of Object.keys(token))
if (key !== 'type' && key !== 'offset')
delete token[key];
Object.assign(token, { type: 'block-scalar', indent, props, source: body });
}
}
/** @returns `true` if last token is a newline */
function addEndtoBlockProps(props, end) {
if (end)
for (const st of end)
switch (st.type) {
case 'space':
case 'comment':
props.push(st);
break;
case 'newline':
props.push(st);
return true;
}
return false;
}
function setFlowScalarValue(token, source, type) {
switch (token.type) {
case 'scalar':
case 'double-quoted-scalar':
case 'single-quoted-scalar':
token.type = type;
token.source = source;
break;
case 'block-scalar': {
const end = token.props.slice(1);
let oa = source.length;
if (token.props[0].type === 'block-scalar-header')
oa -= token.props[0].source.length;
for (const tok of end)
tok.offset += oa;
delete token.props;
Object.assign(token, { type, source, end });
break;
}
case 'block-map':
case 'block-seq': {
const offset = token.offset + source.length;
const nl = { type: 'newline', offset, indent: token.indent, source: '\n' };
delete token.items;
Object.assign(token, { type, source, end: [nl] });
break;
}
default: {
const indent = 'indent' in token ? token.indent : -1;
const end = 'end' in token && Array.isArray(token.end)
? token.end.filter(st => st.type === 'space' ||
st.type === 'comment' ||
st.type === 'newline')
: [];
for (const key of Object.keys(token))
if (key !== 'type' && key !== 'offset')
delete token[key];
Object.assign(token, { type, indent, source, end });
}
}
}
exports.createScalarToken = createScalarToken;
exports.resolveAsScalar = resolveAsScalar;
exports.setScalarValue = setScalarValue;

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import type { CollectionItem, Token } from './cst.js';
/**
* Stringify a CST document, token, or collection item
*
* Fair warning: This applies no validation whatsoever, and
* simply concatenates the sources in their logical order.
*/
export declare const stringify: (cst: Token | CollectionItem) => string;

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'use strict';
/**
* Stringify a CST document, token, or collection item
*
* Fair warning: This applies no validation whatsoever, and
* simply concatenates the sources in their logical order.
*/
const stringify = (cst) => 'type' in cst ? stringifyToken(cst) : stringifyItem(cst);
function stringifyToken(token) {
switch (token.type) {
case 'block-scalar': {
let res = '';
for (const tok of token.props)
res += stringifyToken(tok);
return res + token.source;
}
case 'block-map':
case 'block-seq': {
let res = '';
for (const item of token.items)
res += stringifyItem(item);
return res;
}
case 'flow-collection': {
let res = token.start.source;
for (const item of token.items)
res += stringifyItem(item);
for (const st of token.end)
res += st.source;
return res;
}
case 'document': {
let res = stringifyItem(token);
if (token.end)
for (const st of token.end)
res += st.source;
return res;
}
default: {
let res = token.source;
if ('end' in token && token.end)
for (const st of token.end)
res += st.source;
return res;
}
}
}
function stringifyItem({ start, key, sep, value }) {
let res = '';
for (const st of start)
res += st.source;
if (key)
res += stringifyToken(key);
if (sep)
for (const st of sep)
res += st.source;
if (value)
res += stringifyToken(value);
return res;
}
exports.stringify = stringify;

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import type { CollectionItem, Document } from './cst.js';
export type VisitPath = readonly ['key' | 'value', number][];
export type Visitor = (item: CollectionItem, path: VisitPath) => number | symbol | Visitor | void;
/**
* Apply a visitor to a CST document or item.
*
* Walks through the tree (depth-first) starting from the root, calling a
* `visitor` function with two arguments when entering each item:
* - `item`: The current item, which included the following members:
* - `start: SourceToken[]` – Source tokens before the key or value,
* possibly including its anchor or tag.
* - `key?: Token | null` – Set for pair values. May then be `null`, if
* the key before the `:` separator is empty.
* - `sep?: SourceToken[]` – Source tokens between the key and the value,
* which should include the `:` map value indicator if `value` is set.
* - `value?: Token` – The value of a sequence item, or of a map pair.
* - `path`: The steps from the root to the current node, as an array of
* `['key' | 'value', number]` tuples.
*
* The return value of the visitor may be used to control the traversal:
* - `undefined` (default): Do nothing and continue
* - `visit.SKIP`: Do not visit the children of this token, continue with
* next sibling
* - `visit.BREAK`: Terminate traversal completely
* - `visit.REMOVE`: Remove the current item, then continue with the next one
* - `number`: Set the index of the next step. This is useful especially if
* the index of the current token has changed.
* - `function`: Define the next visitor for this item. After the original
* visitor is called on item entry, next visitors are called after handling
* a non-empty `key` and when exiting the item.
*/
export declare function visit(cst: Document | CollectionItem, visitor: Visitor): void;
export declare namespace visit {
var BREAK: symbol;
var SKIP: symbol;
var REMOVE: symbol;
var itemAtPath: (cst: Document | CollectionItem, path: VisitPath) => CollectionItem | undefined;
var parentCollection: (cst: Document | CollectionItem, path: VisitPath) => import("./cst.js").BlockMap | import("./cst.js").BlockSequence | import("./cst.js").FlowCollection;
}

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'use strict';
const BREAK = Symbol('break visit');
const SKIP = Symbol('skip children');
const REMOVE = Symbol('remove item');
/**
* Apply a visitor to a CST document or item.
*
* Walks through the tree (depth-first) starting from the root, calling a
* `visitor` function with two arguments when entering each item:
* - `item`: The current item, which included the following members:
* - `start: SourceToken[]` – Source tokens before the key or value,
* possibly including its anchor or tag.
* - `key?: Token | null` – Set for pair values. May then be `null`, if
* the key before the `:` separator is empty.
* - `sep?: SourceToken[]` – Source tokens between the key and the value,
* which should include the `:` map value indicator if `value` is set.
* - `value?: Token` – The value of a sequence item, or of a map pair.
* - `path`: The steps from the root to the current node, as an array of
* `['key' | 'value', number]` tuples.
*
* The return value of the visitor may be used to control the traversal:
* - `undefined` (default): Do nothing and continue
* - `visit.SKIP`: Do not visit the children of this token, continue with
* next sibling
* - `visit.BREAK`: Terminate traversal completely
* - `visit.REMOVE`: Remove the current item, then continue with the next one
* - `number`: Set the index of the next step. This is useful especially if
* the index of the current token has changed.
* - `function`: Define the next visitor for this item. After the original
* visitor is called on item entry, next visitors are called after handling
* a non-empty `key` and when exiting the item.
*/
function visit(cst, visitor) {
if ('type' in cst && cst.type === 'document')
cst = { start: cst.start, value: cst.value };
_visit(Object.freeze([]), cst, visitor);
}
// Without the `as symbol` casts, TS declares these in the `visit`
// namespace using `var`, but then complains about that because
// `unique symbol` must be `const`.
/** Terminate visit traversal completely */
visit.BREAK = BREAK;
/** Do not visit the children of the current item */
visit.SKIP = SKIP;
/** Remove the current item */
visit.REMOVE = REMOVE;
/** Find the item at `path` from `cst` as the root */
visit.itemAtPath = (cst, path) => {
let item = cst;
for (const [field, index] of path) {
const tok = item?.[field];
if (tok && 'items' in tok) {
item = tok.items[index];
}
else
return undefined;
}
return item;
};
/**
* Get the immediate parent collection of the item at `path` from `cst` as the root.
*
* Throws an error if the collection is not found, which should never happen if the item itself exists.
*/
visit.parentCollection = (cst, path) => {
const parent = visit.itemAtPath(cst, path.slice(0, -1));
const field = path[path.length - 1][0];
const coll = parent?.[field];
if (coll && 'items' in coll)
return coll;
throw new Error('Parent collection not found');
};
function _visit(path, item, visitor) {
let ctrl = visitor(item, path);
if (typeof ctrl === 'symbol')
return ctrl;
for (const field of ['key', 'value']) {
const token = item[field];
if (token && 'items' in token) {
for (let i = 0; i < token.items.length; ++i) {
const ci = _visit(Object.freeze(path.concat([[field, i]])), token.items[i], visitor);
if (typeof ci === 'number')
i = ci - 1;
else if (ci === BREAK)
return BREAK;
else if (ci === REMOVE) {
token.items.splice(i, 1);
i -= 1;
}
}
if (typeof ctrl === 'function' && field === 'key')
ctrl = ctrl(item, path);
}
}
return typeof ctrl === 'function' ? ctrl(item, path) : ctrl;
}
exports.visit = visit;

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export { createScalarToken, resolveAsScalar, setScalarValue } from './cst-scalar.js';
export { stringify } from './cst-stringify.js';
export { visit, Visitor, VisitPath } from './cst-visit.js';
export interface SourceToken {
type: 'byte-order-mark' | 'doc-mode' | 'doc-start' | 'space' | 'comment' | 'newline' | 'directive-line' | 'anchor' | 'tag' | 'seq-item-ind' | 'explicit-key-ind' | 'map-value-ind' | 'flow-map-start' | 'flow-map-end' | 'flow-seq-start' | 'flow-seq-end' | 'flow-error-end' | 'comma' | 'block-scalar-header';
offset: number;
indent: number;
source: string;
}
export interface ErrorToken {
type: 'error';
offset: number;
source: string;
message: string;
}
export interface Directive {
type: 'directive';
offset: number;
source: string;
}
export interface Document {
type: 'document';
offset: number;
start: SourceToken[];
value?: Token;
end?: SourceToken[];
}
export interface DocumentEnd {
type: 'doc-end';
offset: number;
source: string;
end?: SourceToken[];
}
export interface FlowScalar {
type: 'alias' | 'scalar' | 'single-quoted-scalar' | 'double-quoted-scalar';
offset: number;
indent: number;
source: string;
end?: SourceToken[];
}
export interface BlockScalar {
type: 'block-scalar';
offset: number;
indent: number;
props: Token[];
source: string;
}
export interface BlockMap {
type: 'block-map';
offset: number;
indent: number;
items: Array<{
start: SourceToken[];
key?: never;
sep?: never;
value?: never;
} | {
start: SourceToken[];
key: Token | null;
sep: SourceToken[];
value?: Token;
}>;
}
export interface BlockSequence {
type: 'block-seq';
offset: number;
indent: number;
items: Array<{
start: SourceToken[];
key?: never;
sep?: never;
value?: Token;
}>;
}
export type CollectionItem = {
start: SourceToken[];
key?: Token | null;
sep?: SourceToken[];
value?: Token;
};
export interface FlowCollection {
type: 'flow-collection';
offset: number;
indent: number;
start: SourceToken;
items: CollectionItem[];
end: SourceToken[];
}
export type Token = SourceToken | ErrorToken | Directive | Document | DocumentEnd | FlowScalar | BlockScalar | BlockMap | BlockSequence | FlowCollection;
export type TokenType = SourceToken['type'] | DocumentEnd['type'] | FlowScalar['type'];
/** The byte order mark */
export declare const BOM = "\uFEFF";
/** Start of doc-mode */
export declare const DOCUMENT = "\u0002";
/** Unexpected end of flow-mode */
export declare const FLOW_END = "\u0018";
/** Next token is a scalar value */
export declare const SCALAR = "\u001F";
/** @returns `true` if `token` is a flow or block collection */
export declare const isCollection: (token: Token | null | undefined) => token is BlockMap | BlockSequence | FlowCollection;
/** @returns `true` if `token` is a flow or block scalar; not an alias */
export declare const isScalar: (token: Token | null | undefined) => token is BlockScalar | FlowScalar;
/** Get a printable representation of a lexer token */
export declare function prettyToken(token: string): string;
/** Identify the type of a lexer token. May return `null` for unknown tokens. */
export declare function tokenType(source: string): TokenType | null;

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'use strict';
var cstScalar = require('./cst-scalar.js');
var cstStringify = require('./cst-stringify.js');
var cstVisit = require('./cst-visit.js');
/** The byte order mark */
const BOM = '\u{FEFF}';
/** Start of doc-mode */
const DOCUMENT = '\x02'; // C0: Start of Text
/** Unexpected end of flow-mode */
const FLOW_END = '\x18'; // C0: Cancel
/** Next token is a scalar value */
const SCALAR = '\x1f'; // C0: Unit Separator
/** @returns `true` if `token` is a flow or block collection */
const isCollection = (token) => !!token && 'items' in token;
/** @returns `true` if `token` is a flow or block scalar; not an alias */
const isScalar = (token) => !!token &&
(token.type === 'scalar' ||
token.type === 'single-quoted-scalar' ||
token.type === 'double-quoted-scalar' ||
token.type === 'block-scalar');
/* istanbul ignore next */
/** Get a printable representation of a lexer token */
function prettyToken(token) {
switch (token) {
case BOM:
return '<BOM>';
case DOCUMENT:
return '<DOC>';
case FLOW_END:
return '<FLOW_END>';
case SCALAR:
return '<SCALAR>';
default:
return JSON.stringify(token);
}
}
/** Identify the type of a lexer token. May return `null` for unknown tokens. */
function tokenType(source) {
switch (source) {
case BOM:
return 'byte-order-mark';
case DOCUMENT:
return 'doc-mode';
case FLOW_END:
return 'flow-error-end';
case SCALAR:
return 'scalar';
case '---':
return 'doc-start';
case '...':
return 'doc-end';
case '':
case '\n':
case '\r\n':
return 'newline';
case '-':
return 'seq-item-ind';
case '?':
return 'explicit-key-ind';
case ':':
return 'map-value-ind';
case '{':
return 'flow-map-start';
case '}':
return 'flow-map-end';
case '[':
return 'flow-seq-start';
case ']':
return 'flow-seq-end';
case ',':
return 'comma';
}
switch (source[0]) {
case ' ':
case '\t':
return 'space';
case '#':
return 'comment';
case '%':
return 'directive-line';
case '*':
return 'alias';
case '&':
return 'anchor';
case '!':
return 'tag';
case "'":
return 'single-quoted-scalar';
case '"':
return 'double-quoted-scalar';
case '|':
case '>':
return 'block-scalar-header';
}
return null;
}
exports.createScalarToken = cstScalar.createScalarToken;
exports.resolveAsScalar = cstScalar.resolveAsScalar;
exports.setScalarValue = cstScalar.setScalarValue;
exports.stringify = cstStringify.stringify;
exports.visit = cstVisit.visit;
exports.BOM = BOM;
exports.DOCUMENT = DOCUMENT;
exports.FLOW_END = FLOW_END;
exports.SCALAR = SCALAR;
exports.isCollection = isCollection;
exports.isScalar = isScalar;
exports.prettyToken = prettyToken;
exports.tokenType = tokenType;

87
node_modules/yaml/dist/parse/lexer.d.ts generated vendored Normal file
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/**
* Splits an input string into lexical tokens, i.e. smaller strings that are
* easily identifiable by `tokens.tokenType()`.
*
* Lexing starts always in a "stream" context. Incomplete input may be buffered
* until a complete token can be emitted.
*
* In addition to slices of the original input, the following control characters
* may also be emitted:
*
* - `\x02` (Start of Text): A document starts with the next token
* - `\x18` (Cancel): Unexpected end of flow-mode (indicates an error)
* - `\x1f` (Unit Separator): Next token is a scalar value
* - `\u{FEFF}` (Byte order mark): Emitted separately outside documents
*/
export declare class Lexer {
/**
* Flag indicating whether the end of the current buffer marks the end of
* all input
*/
private atEnd;
/**
* Explicit indent set in block scalar header, as an offset from the current
* minimum indent, so e.g. set to 1 from a header `|2+`. Set to -1 if not
* explicitly set.
*/
private blockScalarIndent;
/**
* Block scalars that include a + (keep) chomping indicator in their header
* include trailing empty lines, which are otherwise excluded from the
* scalar's contents.
*/
private blockScalarKeep;
/** Current input */
private buffer;
/**
* Flag noting whether the map value indicator : can immediately follow this
* node within a flow context.
*/
private flowKey;
/** Count of surrounding flow collection levels. */
private flowLevel;
/**
* Minimum level of indentation required for next lines to be parsed as a
* part of the current scalar value.
*/
private indentNext;
/** Indentation level of the current line. */
private indentValue;
/** Position of the next \n character. */
private lineEndPos;
/** Stores the state of the lexer if reaching the end of incpomplete input */
private next;
/** A pointer to `buffer`; the current position of the lexer. */
private pos;
/**
* Generate YAML tokens from the `source` string. If `incomplete`,
* a part of the last line may be left as a buffer for the next call.
*
* @returns A generator of lexical tokens
*/
lex(source: string, incomplete?: boolean): Generator<string, void, unknown>;
private atLineEnd;
private charAt;
private continueScalar;
private getLine;
private hasChars;
private setNext;
private peek;
private parseNext;
private parseStream;
private parseLineStart;
private parseBlockStart;
private parseDocument;
private parseFlowCollection;
private parseQuotedScalar;
private parseBlockScalarHeader;
private parseBlockScalar;
private parsePlainScalar;
private pushCount;
private pushToIndex;
private pushIndicators;
private pushTag;
private pushNewline;
private pushSpaces;
private pushUntil;
}

703
node_modules/yaml/dist/parse/lexer.js generated vendored Normal file
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'use strict';
var cst = require('./cst.js');
/*
START -> stream
stream
directive -> line-end -> stream
indent + line-end -> stream
[else] -> line-start
line-end
comment -> line-end
newline -> .
input-end -> END
line-start
doc-start -> doc
doc-end -> stream
[else] -> indent -> block-start
block-start
seq-item-start -> block-start
explicit-key-start -> block-start
map-value-start -> block-start
[else] -> doc
doc
line-end -> line-start
spaces -> doc
anchor -> doc
tag -> doc
flow-start -> flow -> doc
flow-end -> error -> doc
seq-item-start -> error -> doc
explicit-key-start -> error -> doc
map-value-start -> doc
alias -> doc
quote-start -> quoted-scalar -> doc
block-scalar-header -> line-end -> block-scalar(min) -> line-start
[else] -> plain-scalar(false, min) -> doc
flow
line-end -> flow
spaces -> flow
anchor -> flow
tag -> flow
flow-start -> flow -> flow
flow-end -> .
seq-item-start -> error -> flow
explicit-key-start -> flow
map-value-start -> flow
alias -> flow
quote-start -> quoted-scalar -> flow
comma -> flow
[else] -> plain-scalar(true, 0) -> flow
quoted-scalar
quote-end -> .
[else] -> quoted-scalar
block-scalar(min)
newline + peek(indent < min) -> .
[else] -> block-scalar(min)
plain-scalar(is-flow, min)
scalar-end(is-flow) -> .
peek(newline + (indent < min)) -> .
[else] -> plain-scalar(min)
*/
function isEmpty(ch) {
switch (ch) {
case undefined:
case ' ':
case '\n':
case '\r':
case '\t':
return true;
default:
return false;
}
}
const hexDigits = '0123456789ABCDEFabcdef'.split('');
const tagChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-#;/?:@&=+$_.!~*'()".split('');
const invalidFlowScalarChars = ',[]{}'.split('');
const invalidAnchorChars = ' ,[]{}\n\r\t'.split('');
const isNotAnchorChar = (ch) => !ch || invalidAnchorChars.includes(ch);
/**
* Splits an input string into lexical tokens, i.e. smaller strings that are
* easily identifiable by `tokens.tokenType()`.
*
* Lexing starts always in a "stream" context. Incomplete input may be buffered
* until a complete token can be emitted.
*
* In addition to slices of the original input, the following control characters
* may also be emitted:
*
* - `\x02` (Start of Text): A document starts with the next token
* - `\x18` (Cancel): Unexpected end of flow-mode (indicates an error)
* - `\x1f` (Unit Separator): Next token is a scalar value
* - `\u{FEFF}` (Byte order mark): Emitted separately outside documents
*/
class Lexer {
constructor() {
/**
* Flag indicating whether the end of the current buffer marks the end of
* all input
*/
this.atEnd = false;
/**
* Explicit indent set in block scalar header, as an offset from the current
* minimum indent, so e.g. set to 1 from a header `|2+`. Set to -1 if not
* explicitly set.
*/
this.blockScalarIndent = -1;
/**
* Block scalars that include a + (keep) chomping indicator in their header
* include trailing empty lines, which are otherwise excluded from the
* scalar's contents.
*/
this.blockScalarKeep = false;
/** Current input */
this.buffer = '';
/**
* Flag noting whether the map value indicator : can immediately follow this
* node within a flow context.
*/
this.flowKey = false;
/** Count of surrounding flow collection levels. */
this.flowLevel = 0;
/**
* Minimum level of indentation required for next lines to be parsed as a
* part of the current scalar value.
*/
this.indentNext = 0;
/** Indentation level of the current line. */
this.indentValue = 0;
/** Position of the next \n character. */
this.lineEndPos = null;
/** Stores the state of the lexer if reaching the end of incpomplete input */
this.next = null;
/** A pointer to `buffer`; the current position of the lexer. */
this.pos = 0;
}
/**
* Generate YAML tokens from the `source` string. If `incomplete`,
* a part of the last line may be left as a buffer for the next call.
*
* @returns A generator of lexical tokens
*/
*lex(source, incomplete = false) {
if (source) {
this.buffer = this.buffer ? this.buffer + source : source;
this.lineEndPos = null;
}
this.atEnd = !incomplete;
let next = this.next ?? 'stream';
while (next && (incomplete || this.hasChars(1)))
next = yield* this.parseNext(next);
}
atLineEnd() {
let i = this.pos;
let ch = this.buffer[i];
while (ch === ' ' || ch === '\t')
ch = this.buffer[++i];
if (!ch || ch === '#' || ch === '\n')
return true;
if (ch === '\r')
return this.buffer[i + 1] === '\n';
return false;
}
charAt(n) {
return this.buffer[this.pos + n];
}
continueScalar(offset) {
let ch = this.buffer[offset];
if (this.indentNext > 0) {
let indent = 0;
while (ch === ' ')
ch = this.buffer[++indent + offset];
if (ch === '\r') {
const next = this.buffer[indent + offset + 1];
if (next === '\n' || (!next && !this.atEnd))
return offset + indent + 1;
}
return ch === '\n' || indent >= this.indentNext || (!ch && !this.atEnd)
? offset + indent
: -1;
}
if (ch === '-' || ch === '.') {
const dt = this.buffer.substr(offset, 3);
if ((dt === '---' || dt === '...') && isEmpty(this.buffer[offset + 3]))
return -1;
}
return offset;
}
getLine() {
let end = this.lineEndPos;
if (typeof end !== 'number' || (end !== -1 && end < this.pos)) {
end = this.buffer.indexOf('\n', this.pos);
this.lineEndPos = end;
}
if (end === -1)
return this.atEnd ? this.buffer.substring(this.pos) : null;
if (this.buffer[end - 1] === '\r')
end -= 1;
return this.buffer.substring(this.pos, end);
}
hasChars(n) {
return this.pos + n <= this.buffer.length;
}
setNext(state) {
this.buffer = this.buffer.substring(this.pos);
this.pos = 0;
this.lineEndPos = null;
this.next = state;
return null;
}
peek(n) {
return this.buffer.substr(this.pos, n);
}
*parseNext(next) {
switch (next) {
case 'stream':
return yield* this.parseStream();
case 'line-start':
return yield* this.parseLineStart();
case 'block-start':
return yield* this.parseBlockStart();
case 'doc':
return yield* this.parseDocument();
case 'flow':
return yield* this.parseFlowCollection();
case 'quoted-scalar':
return yield* this.parseQuotedScalar();
case 'block-scalar':
return yield* this.parseBlockScalar();
case 'plain-scalar':
return yield* this.parsePlainScalar();
}
}
*parseStream() {
let line = this.getLine();
if (line === null)
return this.setNext('stream');
if (line[0] === cst.BOM) {
yield* this.pushCount(1);
line = line.substring(1);
}
if (line[0] === '%') {
let dirEnd = line.length;
const cs = line.indexOf('#');
if (cs !== -1) {
const ch = line[cs - 1];
if (ch === ' ' || ch === '\t')
dirEnd = cs - 1;
}
while (true) {
const ch = line[dirEnd - 1];
if (ch === ' ' || ch === '\t')
dirEnd -= 1;
else
break;
}
const n = (yield* this.pushCount(dirEnd)) + (yield* this.pushSpaces(true));
yield* this.pushCount(line.length - n); // possible comment
this.pushNewline();
return 'stream';
}
if (this.atLineEnd()) {
const sp = yield* this.pushSpaces(true);
yield* this.pushCount(line.length - sp);
yield* this.pushNewline();
return 'stream';
}
yield cst.DOCUMENT;
return yield* this.parseLineStart();
}
*parseLineStart() {
const ch = this.charAt(0);
if (!ch && !this.atEnd)
return this.setNext('line-start');
if (ch === '-' || ch === '.') {
if (!this.atEnd && !this.hasChars(4))
return this.setNext('line-start');
const s = this.peek(3);
if (s === '---' && isEmpty(this.charAt(3))) {
yield* this.pushCount(3);
this.indentValue = 0;
this.indentNext = 0;
return 'doc';
}
else if (s === '...' && isEmpty(this.charAt(3))) {
yield* this.pushCount(3);
return 'stream';
}
}
this.indentValue = yield* this.pushSpaces(false);
if (this.indentNext > this.indentValue && !isEmpty(this.charAt(1)))
this.indentNext = this.indentValue;
return yield* this.parseBlockStart();
}
*parseBlockStart() {
const [ch0, ch1] = this.peek(2);
if (!ch1 && !this.atEnd)
return this.setNext('block-start');
if ((ch0 === '-' || ch0 === '?' || ch0 === ':') && isEmpty(ch1)) {
const n = (yield* this.pushCount(1)) + (yield* this.pushSpaces(true));
this.indentNext = this.indentValue + 1;
this.indentValue += n;
return yield* this.parseBlockStart();
}
return 'doc';
}
*parseDocument() {
yield* this.pushSpaces(true);
const line = this.getLine();
if (line === null)
return this.setNext('doc');
let n = yield* this.pushIndicators();
switch (line[n]) {
case '#':
yield* this.pushCount(line.length - n);
// fallthrough
case undefined:
yield* this.pushNewline();
return yield* this.parseLineStart();
case '{':
case '[':
yield* this.pushCount(1);
this.flowKey = false;
this.flowLevel = 1;
return 'flow';
case '}':
case ']':
// this is an error
yield* this.pushCount(1);
return 'doc';
case '*':
yield* this.pushUntil(isNotAnchorChar);
return 'doc';
case '"':
case "'":
return yield* this.parseQuotedScalar();
case '|':
case '>':
n += yield* this.parseBlockScalarHeader();
n += yield* this.pushSpaces(true);
yield* this.pushCount(line.length - n);
yield* this.pushNewline();
return yield* this.parseBlockScalar();
default:
return yield* this.parsePlainScalar();
}
}
*parseFlowCollection() {
let nl, sp;
let indent = -1;
do {
nl = yield* this.pushNewline();
if (nl > 0) {
sp = yield* this.pushSpaces(false);
this.indentValue = indent = sp;
}
else {
sp = 0;
}
sp += yield* this.pushSpaces(true);
} while (nl + sp > 0);
const line = this.getLine();
if (line === null)
return this.setNext('flow');
if ((indent !== -1 && indent < this.indentNext && line[0] !== '#') ||
(indent === 0 &&
(line.startsWith('---') || line.startsWith('...')) &&
isEmpty(line[3]))) {
// Allowing for the terminal ] or } at the same (rather than greater)
// indent level as the initial [ or { is technically invalid, but
// failing here would be surprising to users.
const atFlowEndMarker = indent === this.indentNext - 1 &&
this.flowLevel === 1 &&
(line[0] === ']' || line[0] === '}');
if (!atFlowEndMarker) {
// this is an error
this.flowLevel = 0;
yield cst.FLOW_END;
return yield* this.parseLineStart();
}
}
let n = 0;
while (line[n] === ',') {
n += yield* this.pushCount(1);
n += yield* this.pushSpaces(true);
this.flowKey = false;
}
n += yield* this.pushIndicators();
switch (line[n]) {
case undefined:
return 'flow';
case '#':
yield* this.pushCount(line.length - n);
return 'flow';
case '{':
case '[':
yield* this.pushCount(1);
this.flowKey = false;
this.flowLevel += 1;
return 'flow';
case '}':
case ']':
yield* this.pushCount(1);
this.flowKey = true;
this.flowLevel -= 1;
return this.flowLevel ? 'flow' : 'doc';
case '*':
yield* this.pushUntil(isNotAnchorChar);
return 'flow';
case '"':
case "'":
this.flowKey = true;
return yield* this.parseQuotedScalar();
case ':': {
const next = this.charAt(1);
if (this.flowKey || isEmpty(next) || next === ',') {
this.flowKey = false;
yield* this.pushCount(1);
yield* this.pushSpaces(true);
return 'flow';
}
}
// fallthrough
default:
this.flowKey = false;
return yield* this.parsePlainScalar();
}
}
*parseQuotedScalar() {
const quote = this.charAt(0);
let end = this.buffer.indexOf(quote, this.pos + 1);
if (quote === "'") {
while (end !== -1 && this.buffer[end + 1] === "'")
end = this.buffer.indexOf("'", end + 2);
}
else {
// double-quote
while (end !== -1) {
let n = 0;
while (this.buffer[end - 1 - n] === '\\')
n += 1;
if (n % 2 === 0)
break;
end = this.buffer.indexOf('"', end + 1);
}
}
// Only looking for newlines within the quotes
const qb = this.buffer.substring(0, end);
let nl = qb.indexOf('\n', this.pos);
if (nl !== -1) {
while (nl !== -1) {
const cs = this.continueScalar(nl + 1);
if (cs === -1)
break;
nl = qb.indexOf('\n', cs);
}
if (nl !== -1) {
// this is an error caused by an unexpected unindent
end = nl - (qb[nl - 1] === '\r' ? 2 : 1);
}
}
if (end === -1) {
if (!this.atEnd)
return this.setNext('quoted-scalar');
end = this.buffer.length;
}
yield* this.pushToIndex(end + 1, false);
return this.flowLevel ? 'flow' : 'doc';
}
*parseBlockScalarHeader() {
this.blockScalarIndent = -1;
this.blockScalarKeep = false;
let i = this.pos;
while (true) {
const ch = this.buffer[++i];
if (ch === '+')
this.blockScalarKeep = true;
else if (ch > '0' && ch <= '9')
this.blockScalarIndent = Number(ch) - 1;
else if (ch !== '-')
break;
}
return yield* this.pushUntil(ch => isEmpty(ch) || ch === '#');
}
*parseBlockScalar() {
let nl = this.pos - 1; // may be -1 if this.pos === 0
let indent = 0;
let ch;
loop: for (let i = this.pos; (ch = this.buffer[i]); ++i) {
switch (ch) {
case ' ':
indent += 1;
break;
case '\n':
nl = i;
indent = 0;
break;
case '\r': {
const next = this.buffer[i + 1];
if (!next && !this.atEnd)
return this.setNext('block-scalar');
if (next === '\n')
break;
} // fallthrough
default:
break loop;
}
}
if (!ch && !this.atEnd)
return this.setNext('block-scalar');
if (indent >= this.indentNext) {
if (this.blockScalarIndent === -1)
this.indentNext = indent;
else
this.indentNext += this.blockScalarIndent;
do {
const cs = this.continueScalar(nl + 1);
if (cs === -1)
break;
nl = this.buffer.indexOf('\n', cs);
} while (nl !== -1);
if (nl === -1) {
if (!this.atEnd)
return this.setNext('block-scalar');
nl = this.buffer.length;
}
}
if (!this.blockScalarKeep) {
do {
let i = nl - 1;
let ch = this.buffer[i];
if (ch === '\r')
ch = this.buffer[--i];
const lastChar = i; // Drop the line if last char not more indented
while (ch === ' ' || ch === '\t')
ch = this.buffer[--i];
if (ch === '\n' && i >= this.pos && i + 1 + indent > lastChar)
nl = i;
else
break;
} while (true);
}
yield cst.SCALAR;
yield* this.pushToIndex(nl + 1, true);
return yield* this.parseLineStart();
}
*parsePlainScalar() {
const inFlow = this.flowLevel > 0;
let end = this.pos - 1;
let i = this.pos - 1;
let ch;
while ((ch = this.buffer[++i])) {
if (ch === ':') {
const next = this.buffer[i + 1];
if (isEmpty(next) || (inFlow && next === ','))
break;
end = i;
}
else if (isEmpty(ch)) {
let next = this.buffer[i + 1];
if (ch === '\r') {
if (next === '\n') {
i += 1;
ch = '\n';
next = this.buffer[i + 1];
}
else
end = i;
}
if (next === '#' || (inFlow && invalidFlowScalarChars.includes(next)))
break;
if (ch === '\n') {
const cs = this.continueScalar(i + 1);
if (cs === -1)
break;
i = Math.max(i, cs - 2); // to advance, but still account for ' #'
}
}
else {
if (inFlow && invalidFlowScalarChars.includes(ch))
break;
end = i;
}
}
if (!ch && !this.atEnd)
return this.setNext('plain-scalar');
yield cst.SCALAR;
yield* this.pushToIndex(end + 1, true);
return inFlow ? 'flow' : 'doc';
}
*pushCount(n) {
if (n > 0) {
yield this.buffer.substr(this.pos, n);
this.pos += n;
return n;
}
return 0;
}
*pushToIndex(i, allowEmpty) {
const s = this.buffer.slice(this.pos, i);
if (s) {
yield s;
this.pos += s.length;
return s.length;
}
else if (allowEmpty)
yield '';
return 0;
}
*pushIndicators() {
switch (this.charAt(0)) {
case '!':
return ((yield* this.pushTag()) +
(yield* this.pushSpaces(true)) +
(yield* this.pushIndicators()));
case '&':
return ((yield* this.pushUntil(isNotAnchorChar)) +
(yield* this.pushSpaces(true)) +
(yield* this.pushIndicators()));
case '-': // this is an error
case '?': // this is an error outside flow collections
case ':': {
const inFlow = this.flowLevel > 0;
const ch1 = this.charAt(1);
if (isEmpty(ch1) || (inFlow && invalidFlowScalarChars.includes(ch1))) {
if (!inFlow)
this.indentNext = this.indentValue + 1;
else if (this.flowKey)
this.flowKey = false;
return ((yield* this.pushCount(1)) +
(yield* this.pushSpaces(true)) +
(yield* this.pushIndicators()));
}
}
}
return 0;
}
*pushTag() {
if (this.charAt(1) === '<') {
let i = this.pos + 2;
let ch = this.buffer[i];
while (!isEmpty(ch) && ch !== '>')
ch = this.buffer[++i];
return yield* this.pushToIndex(ch === '>' ? i + 1 : i, false);
}
else {
let i = this.pos + 1;
let ch = this.buffer[i];
while (ch) {
if (tagChars.includes(ch))
ch = this.buffer[++i];
else if (ch === '%' &&
hexDigits.includes(this.buffer[i + 1]) &&
hexDigits.includes(this.buffer[i + 2])) {
ch = this.buffer[(i += 3)];
}
else
break;
}
return yield* this.pushToIndex(i, false);
}
}
*pushNewline() {
const ch = this.buffer[this.pos];
if (ch === '\n')
return yield* this.pushCount(1);
else if (ch === '\r' && this.charAt(1) === '\n')
return yield* this.pushCount(2);
else
return 0;
}
*pushSpaces(allowTabs) {
let i = this.pos - 1;
let ch;
do {
ch = this.buffer[++i];
} while (ch === ' ' || (allowTabs && ch === '\t'));
const n = i - this.pos;
if (n > 0) {
yield this.buffer.substr(this.pos, n);
this.pos = i;
}
return n;
}
*pushUntil(test) {
let i = this.pos;
let ch = this.buffer[i];
while (!test(ch))
ch = this.buffer[++i];
return yield* this.pushToIndex(i, false);
}
}
exports.Lexer = Lexer;

22
node_modules/yaml/dist/parse/line-counter.d.ts generated vendored Normal file
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@ -0,0 +1,22 @@
/**
* Tracks newlines during parsing in order to provide an efficient API for
* determining the one-indexed `{ line, col }` position for any offset
* within the input.
*/
export declare class LineCounter {
lineStarts: number[];
/**
* Should be called in ascending order. Otherwise, call
* `lineCounter.lineStarts.sort()` before calling `linePos()`.
*/
addNewLine: (offset: number) => number;
/**
* Performs a binary search and returns the 1-indexed { line, col }
* position of `offset`. If `line === 0`, `addNewLine` has never been
* called or `offset` is before the first known newline.
*/
linePos: (offset: number) => {
line: number;
col: number;
};
}

41
node_modules/yaml/dist/parse/line-counter.js generated vendored Normal file
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@ -0,0 +1,41 @@
'use strict';
/**
* Tracks newlines during parsing in order to provide an efficient API for
* determining the one-indexed `{ line, col }` position for any offset
* within the input.
*/
class LineCounter {
constructor() {
this.lineStarts = [];
/**
* Should be called in ascending order. Otherwise, call
* `lineCounter.lineStarts.sort()` before calling `linePos()`.
*/
this.addNewLine = (offset) => this.lineStarts.push(offset);
/**
* Performs a binary search and returns the 1-indexed { line, col }
* position of `offset`. If `line === 0`, `addNewLine` has never been
* called or `offset` is before the first known newline.
*/
this.linePos = (offset) => {
let low = 0;
let high = this.lineStarts.length;
while (low < high) {
const mid = (low + high) >> 1; // Math.floor((low + high) / 2)
if (this.lineStarts[mid] < offset)
low = mid + 1;
else
high = mid;
}
if (this.lineStarts[low] === offset)
return { line: low + 1, col: 1 };
if (low === 0)
return { line: 0, col: offset };
const start = this.lineStarts[low - 1];
return { line: low, col: offset - start + 1 };
};
}
}
exports.LineCounter = LineCounter;

84
node_modules/yaml/dist/parse/parser.d.ts generated vendored Normal file
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@ -0,0 +1,84 @@
import { Token } from './cst.js';
/**
* A YAML concrete syntax tree (CST) parser
*
* ```ts
* const src: string = ...
* for (const token of new Parser().parse(src)) {
* // token: Token
* }
* ```
*
* To use the parser with a user-provided lexer:
*
* ```ts
* function* parse(source: string, lexer: Lexer) {
* const parser = new Parser()
* for (const lexeme of lexer.lex(source))
* yield* parser.next(lexeme)
* yield* parser.end()
* }
*
* const src: string = ...
* const lexer = new Lexer()
* for (const token of parse(src, lexer)) {
* // token: Token
* }
* ```
*/
export declare class Parser {
private onNewLine?;
/** If true, space and sequence indicators count as indentation */
private atNewLine;
/** If true, next token is a scalar value */
private atScalar;
/** Current indentation level */
private indent;
/** Current offset since the start of parsing */
offset: number;
/** On the same line with a block map key */
private onKeyLine;
/** Top indicates the node that's currently being built */
stack: Token[];
/** The source of the current token, set in parse() */
private source;
/** The type of the current token, set in parse() */
private type;
/**
* @param onNewLine - If defined, called separately with the start position of
* each new line (in `parse()`, including the start of input).
*/
constructor(onNewLine?: (offset: number) => void);
/**
* Parse `source` as a YAML stream.
* If `incomplete`, a part of the last line may be left as a buffer for the next call.
*
* Errors are not thrown, but yielded as `{ type: 'error', message }` tokens.
*
* @returns A generator of tokens representing each directive, document, and other structure.
*/
parse(source: string, incomplete?: boolean): Generator<Token, void, unknown>;
/**
* Advance the parser by the `source` of one lexical token.
*/
next(source: string): Generator<Token, void, unknown>;
private lexer;
/** Call at end of input to push out any remaining constructions */
end(): Generator<Token, void, unknown>;
private get sourceToken();
private step;
private peek;
private pop;
private stream;
private document;
private scalar;
private blockScalar;
private blockMap;
private blockSequence;
private flowCollection;
private flowScalar;
private startBlockValue;
private atIndentedComment;
private documentEnd;
private lineEnd;
}

954
node_modules/yaml/dist/parse/parser.js generated vendored Normal file
View file

@ -0,0 +1,954 @@
'use strict';
var cst = require('./cst.js');
var lexer = require('./lexer.js');
function includesToken(list, type) {
for (let i = 0; i < list.length; ++i)
if (list[i].type === type)
return true;
return false;
}
function findNonEmptyIndex(list) {
for (let i = 0; i < list.length; ++i) {
switch (list[i].type) {
case 'space':
case 'comment':
case 'newline':
break;
default:
return i;
}
}
return -1;
}
function isFlowToken(token) {
switch (token?.type) {
case 'alias':
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar':
case 'flow-collection':
return true;
default:
return false;
}
}
function getPrevProps(parent) {
switch (parent.type) {
case 'document':
return parent.start;
case 'block-map': {
const it = parent.items[parent.items.length - 1];
return it.sep ?? it.start;
}
case 'block-seq':
return parent.items[parent.items.length - 1].start;
/* istanbul ignore next should not happen */
default:
return [];
}
}
/** Note: May modify input array */
function getFirstKeyStartProps(prev) {
if (prev.length === 0)
return [];
let i = prev.length;
loop: while (--i >= 0) {
switch (prev[i].type) {
case 'doc-start':
case 'explicit-key-ind':
case 'map-value-ind':
case 'seq-item-ind':
case 'newline':
break loop;
}
}
while (prev[++i]?.type === 'space') {
/* loop */
}
return prev.splice(i, prev.length);
}
function fixFlowSeqItems(fc) {
if (fc.start.type === 'flow-seq-start') {
for (const it of fc.items) {
if (it.sep &&
!it.value &&
!includesToken(it.start, 'explicit-key-ind') &&
!includesToken(it.sep, 'map-value-ind')) {
if (it.key)
it.value = it.key;
delete it.key;
if (isFlowToken(it.value)) {
if (it.value.end)
Array.prototype.push.apply(it.value.end, it.sep);
else
it.value.end = it.sep;
}
else
Array.prototype.push.apply(it.start, it.sep);
delete it.sep;
}
}
}
}
/**
* A YAML concrete syntax tree (CST) parser
*
* ```ts
* const src: string = ...
* for (const token of new Parser().parse(src)) {
* // token: Token
* }
* ```
*
* To use the parser with a user-provided lexer:
*
* ```ts
* function* parse(source: string, lexer: Lexer) {
* const parser = new Parser()
* for (const lexeme of lexer.lex(source))
* yield* parser.next(lexeme)
* yield* parser.end()
* }
*
* const src: string = ...
* const lexer = new Lexer()
* for (const token of parse(src, lexer)) {
* // token: Token
* }
* ```
*/
class Parser {
/**
* @param onNewLine - If defined, called separately with the start position of
* each new line (in `parse()`, including the start of input).
*/
constructor(onNewLine) {
/** If true, space and sequence indicators count as indentation */
this.atNewLine = true;
/** If true, next token is a scalar value */
this.atScalar = false;
/** Current indentation level */
this.indent = 0;
/** Current offset since the start of parsing */
this.offset = 0;
/** On the same line with a block map key */
this.onKeyLine = false;
/** Top indicates the node that's currently being built */
this.stack = [];
/** The source of the current token, set in parse() */
this.source = '';
/** The type of the current token, set in parse() */
this.type = '';
// Must be defined after `next()`
this.lexer = new lexer.Lexer();
this.onNewLine = onNewLine;
}
/**
* Parse `source` as a YAML stream.
* If `incomplete`, a part of the last line may be left as a buffer for the next call.
*
* Errors are not thrown, but yielded as `{ type: 'error', message }` tokens.
*
* @returns A generator of tokens representing each directive, document, and other structure.
*/
*parse(source, incomplete = false) {
if (this.onNewLine && this.offset === 0)
this.onNewLine(0);
for (const lexeme of this.lexer.lex(source, incomplete))
yield* this.next(lexeme);
if (!incomplete)
yield* this.end();
}
/**
* Advance the parser by the `source` of one lexical token.
*/
*next(source) {
this.source = source;
if (process.env.LOG_TOKENS)
console.log('|', cst.prettyToken(source));
if (this.atScalar) {
this.atScalar = false;
yield* this.step();
this.offset += source.length;
return;
}
const type = cst.tokenType(source);
if (!type) {
const message = `Not a YAML token: ${source}`;
yield* this.pop({ type: 'error', offset: this.offset, message, source });
this.offset += source.length;
}
else if (type === 'scalar') {
this.atNewLine = false;
this.atScalar = true;
this.type = 'scalar';
}
else {
this.type = type;
yield* this.step();
switch (type) {
case 'newline':
this.atNewLine = true;
this.indent = 0;
if (this.onNewLine)
this.onNewLine(this.offset + source.length);
break;
case 'space':
if (this.atNewLine && source[0] === ' ')
this.indent += source.length;
break;
case 'explicit-key-ind':
case 'map-value-ind':
case 'seq-item-ind':
if (this.atNewLine)
this.indent += source.length;
break;
case 'doc-mode':
case 'flow-error-end':
return;
default:
this.atNewLine = false;
}
this.offset += source.length;
}
}
/** Call at end of input to push out any remaining constructions */
*end() {
while (this.stack.length > 0)
yield* this.pop();
}
get sourceToken() {
const st = {
type: this.type,
offset: this.offset,
indent: this.indent,
source: this.source
};
return st;
}
*step() {
const top = this.peek(1);
if (this.type === 'doc-end' && (!top || top.type !== 'doc-end')) {
while (this.stack.length > 0)
yield* this.pop();
this.stack.push({
type: 'doc-end',
offset: this.offset,
source: this.source
});
return;
}
if (!top)
return yield* this.stream();
switch (top.type) {
case 'document':
return yield* this.document(top);
case 'alias':
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar':
return yield* this.scalar(top);
case 'block-scalar':
return yield* this.blockScalar(top);
case 'block-map':
return yield* this.blockMap(top);
case 'block-seq':
return yield* this.blockSequence(top);
case 'flow-collection':
return yield* this.flowCollection(top);
case 'doc-end':
return yield* this.documentEnd(top);
}
/* istanbul ignore next should not happen */
yield* this.pop();
}
peek(n) {
return this.stack[this.stack.length - n];
}
*pop(error) {
const token = error ?? this.stack.pop();
/* istanbul ignore if should not happen */
if (!token) {
const message = 'Tried to pop an empty stack';
yield { type: 'error', offset: this.offset, source: '', message };
}
else if (this.stack.length === 0) {
yield token;
}
else {
const top = this.peek(1);
if (token.type === 'block-scalar') {
// Block scalars use their parent rather than header indent
token.indent = 'indent' in top ? top.indent : 0;
}
else if (token.type === 'flow-collection' && top.type === 'document') {
// Ignore all indent for top-level flow collections
token.indent = 0;
}
if (token.type === 'flow-collection')
fixFlowSeqItems(token);
switch (top.type) {
case 'document':
top.value = token;
break;
case 'block-scalar':
top.props.push(token); // error
break;
case 'block-map': {
const it = top.items[top.items.length - 1];
if (it.value) {
top.items.push({ start: [], key: token, sep: [] });
this.onKeyLine = true;
return;
}
else if (it.sep) {
it.value = token;
}
else {
Object.assign(it, { key: token, sep: [] });
this.onKeyLine = !includesToken(it.start, 'explicit-key-ind');
return;
}
break;
}
case 'block-seq': {
const it = top.items[top.items.length - 1];
if (it.value)
top.items.push({ start: [], value: token });
else
it.value = token;
break;
}
case 'flow-collection': {
const it = top.items[top.items.length - 1];
if (!it || it.value)
top.items.push({ start: [], key: token, sep: [] });
else if (it.sep)
it.value = token;
else
Object.assign(it, { key: token, sep: [] });
return;
}
/* istanbul ignore next should not happen */
default:
yield* this.pop();
yield* this.pop(token);
}
if ((top.type === 'document' ||
top.type === 'block-map' ||
top.type === 'block-seq') &&
(token.type === 'block-map' || token.type === 'block-seq')) {
const last = token.items[token.items.length - 1];
if (last &&
!last.sep &&
!last.value &&
last.start.length > 0 &&
findNonEmptyIndex(last.start) === -1 &&
(token.indent === 0 ||
last.start.every(st => st.type !== 'comment' || st.indent < token.indent))) {
if (top.type === 'document')
top.end = last.start;
else
top.items.push({ start: last.start });
token.items.splice(-1, 1);
}
}
}
}
*stream() {
switch (this.type) {
case 'directive-line':
yield { type: 'directive', offset: this.offset, source: this.source };
return;
case 'byte-order-mark':
case 'space':
case 'comment':
case 'newline':
yield this.sourceToken;
return;
case 'doc-mode':
case 'doc-start': {
const doc = {
type: 'document',
offset: this.offset,
start: []
};
if (this.type === 'doc-start')
doc.start.push(this.sourceToken);
this.stack.push(doc);
return;
}
}
yield {
type: 'error',
offset: this.offset,
message: `Unexpected ${this.type} token in YAML stream`,
source: this.source
};
}
*document(doc) {
if (doc.value)
return yield* this.lineEnd(doc);
switch (this.type) {
case 'doc-start': {
if (findNonEmptyIndex(doc.start) !== -1) {
yield* this.pop();
yield* this.step();
}
else
doc.start.push(this.sourceToken);
return;
}
case 'anchor':
case 'tag':
case 'space':
case 'comment':
case 'newline':
doc.start.push(this.sourceToken);
return;
}
const bv = this.startBlockValue(doc);
if (bv)
this.stack.push(bv);
else {
yield {
type: 'error',
offset: this.offset,
message: `Unexpected ${this.type} token in YAML document`,
source: this.source
};
}
}
*scalar(scalar) {
if (this.type === 'map-value-ind') {
const prev = getPrevProps(this.peek(2));
const start = getFirstKeyStartProps(prev);
let sep;
if (scalar.end) {
sep = scalar.end;
sep.push(this.sourceToken);
delete scalar.end;
}
else
sep = [this.sourceToken];
const map = {
type: 'block-map',
offset: scalar.offset,
indent: scalar.indent,
items: [{ start, key: scalar, sep }]
};
this.onKeyLine = true;
this.stack[this.stack.length - 1] = map;
}
else
yield* this.lineEnd(scalar);
}
*blockScalar(scalar) {
switch (this.type) {
case 'space':
case 'comment':
case 'newline':
scalar.props.push(this.sourceToken);
return;
case 'scalar':
scalar.source = this.source;
// block-scalar source includes trailing newline
this.atNewLine = true;
this.indent = 0;
if (this.onNewLine) {
let nl = this.source.indexOf('\n') + 1;
while (nl !== 0) {
this.onNewLine(this.offset + nl);
nl = this.source.indexOf('\n', nl) + 1;
}
}
yield* this.pop();
break;
/* istanbul ignore next should not happen */
default:
yield* this.pop();
yield* this.step();
}
}
*blockMap(map) {
const it = map.items[map.items.length - 1];
// it.sep is true-ish if pair already has key or : separator
switch (this.type) {
case 'newline':
this.onKeyLine = false;
if (it.value) {
const end = 'end' in it.value ? it.value.end : undefined;
const last = Array.isArray(end) ? end[end.length - 1] : undefined;
if (last?.type === 'comment')
end?.push(this.sourceToken);
else
map.items.push({ start: [this.sourceToken] });
}
else if (it.sep) {
it.sep.push(this.sourceToken);
}
else {
it.start.push(this.sourceToken);
}
return;
case 'space':
case 'comment':
if (it.value) {
map.items.push({ start: [this.sourceToken] });
}
else if (it.sep) {
it.sep.push(this.sourceToken);
}
else {
if (this.atIndentedComment(it.start, map.indent)) {
const prev = map.items[map.items.length - 2];
const end = prev?.value?.end;
if (Array.isArray(end)) {
Array.prototype.push.apply(end, it.start);
end.push(this.sourceToken);
map.items.pop();
return;
}
}
it.start.push(this.sourceToken);
}
return;
}
if (this.indent >= map.indent) {
const atNextItem = !this.onKeyLine && this.indent === map.indent && it.sep;
// For empty nodes, assign newline-separated not indented empty tokens to following node
let start = [];
if (atNextItem && it.sep && !it.value) {
const nl = [];
for (let i = 0; i < it.sep.length; ++i) {
const st = it.sep[i];
switch (st.type) {
case 'newline':
nl.push(i);
break;
case 'space':
break;
case 'comment':
if (st.indent > map.indent)
nl.length = 0;
break;
default:
nl.length = 0;
}
}
if (nl.length >= 2)
start = it.sep.splice(nl[1]);
}
switch (this.type) {
case 'anchor':
case 'tag':
if (atNextItem || it.value) {
start.push(this.sourceToken);
map.items.push({ start });
this.onKeyLine = true;
}
else if (it.sep) {
it.sep.push(this.sourceToken);
}
else {
it.start.push(this.sourceToken);
}
return;
case 'explicit-key-ind':
if (!it.sep && !includesToken(it.start, 'explicit-key-ind')) {
it.start.push(this.sourceToken);
}
else if (atNextItem || it.value) {
start.push(this.sourceToken);
map.items.push({ start });
}
else {
this.stack.push({
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start: [this.sourceToken] }]
});
}
this.onKeyLine = true;
return;
case 'map-value-ind':
if (includesToken(it.start, 'explicit-key-ind')) {
if (!it.sep) {
if (includesToken(it.start, 'newline')) {
Object.assign(it, { key: null, sep: [this.sourceToken] });
}
else {
const start = getFirstKeyStartProps(it.start);
this.stack.push({
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start, key: null, sep: [this.sourceToken] }]
});
}
}
else if (it.value) {
map.items.push({ start: [], key: null, sep: [this.sourceToken] });
}
else if (includesToken(it.sep, 'map-value-ind')) {
this.stack.push({
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start, key: null, sep: [this.sourceToken] }]
});
}
else if (isFlowToken(it.key) &&
!includesToken(it.sep, 'newline')) {
const start = getFirstKeyStartProps(it.start);
const key = it.key;
const sep = it.sep;
sep.push(this.sourceToken);
// @ts-expect-error type guard is wrong here
delete it.key, delete it.sep;
this.stack.push({
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start, key, sep }]
});
}
else if (start.length > 0) {
// Not actually at next item
it.sep = it.sep.concat(start, this.sourceToken);
}
else {
it.sep.push(this.sourceToken);
}
}
else {
if (!it.sep) {
Object.assign(it, { key: null, sep: [this.sourceToken] });
}
else if (it.value || atNextItem) {
map.items.push({ start, key: null, sep: [this.sourceToken] });
}
else if (includesToken(it.sep, 'map-value-ind')) {
this.stack.push({
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start: [], key: null, sep: [this.sourceToken] }]
});
}
else {
it.sep.push(this.sourceToken);
}
}
this.onKeyLine = true;
return;
case 'alias':
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar': {
const fs = this.flowScalar(this.type);
if (atNextItem || it.value) {
map.items.push({ start, key: fs, sep: [] });
this.onKeyLine = true;
}
else if (it.sep) {
this.stack.push(fs);
}
else {
Object.assign(it, { key: fs, sep: [] });
this.onKeyLine = true;
}
return;
}
default: {
const bv = this.startBlockValue(map);
if (bv) {
if (atNextItem &&
bv.type !== 'block-seq' &&
includesToken(it.start, 'explicit-key-ind')) {
map.items.push({ start });
}
this.stack.push(bv);
return;
}
}
}
}
yield* this.pop();
yield* this.step();
}
*blockSequence(seq) {
const it = seq.items[seq.items.length - 1];
switch (this.type) {
case 'newline':
if (it.value) {
const end = 'end' in it.value ? it.value.end : undefined;
const last = Array.isArray(end) ? end[end.length - 1] : undefined;
if (last?.type === 'comment')
end?.push(this.sourceToken);
else
seq.items.push({ start: [this.sourceToken] });
}
else
it.start.push(this.sourceToken);
return;
case 'space':
case 'comment':
if (it.value)
seq.items.push({ start: [this.sourceToken] });
else {
if (this.atIndentedComment(it.start, seq.indent)) {
const prev = seq.items[seq.items.length - 2];
const end = prev?.value?.end;
if (Array.isArray(end)) {
Array.prototype.push.apply(end, it.start);
end.push(this.sourceToken);
seq.items.pop();
return;
}
}
it.start.push(this.sourceToken);
}
return;
case 'anchor':
case 'tag':
if (it.value || this.indent <= seq.indent)
break;
it.start.push(this.sourceToken);
return;
case 'seq-item-ind':
if (this.indent !== seq.indent)
break;
if (it.value || includesToken(it.start, 'seq-item-ind'))
seq.items.push({ start: [this.sourceToken] });
else
it.start.push(this.sourceToken);
return;
}
if (this.indent > seq.indent) {
const bv = this.startBlockValue(seq);
if (bv) {
this.stack.push(bv);
return;
}
}
yield* this.pop();
yield* this.step();
}
*flowCollection(fc) {
const it = fc.items[fc.items.length - 1];
if (this.type === 'flow-error-end') {
let top;
do {
yield* this.pop();
top = this.peek(1);
} while (top && top.type === 'flow-collection');
}
else if (fc.end.length === 0) {
switch (this.type) {
case 'comma':
case 'explicit-key-ind':
if (!it || it.sep)
fc.items.push({ start: [this.sourceToken] });
else
it.start.push(this.sourceToken);
return;
case 'map-value-ind':
if (!it || it.value)
fc.items.push({ start: [], key: null, sep: [this.sourceToken] });
else if (it.sep)
it.sep.push(this.sourceToken);
else
Object.assign(it, { key: null, sep: [this.sourceToken] });
return;
case 'space':
case 'comment':
case 'newline':
case 'anchor':
case 'tag':
if (!it || it.value)
fc.items.push({ start: [this.sourceToken] });
else if (it.sep)
it.sep.push(this.sourceToken);
else
it.start.push(this.sourceToken);
return;
case 'alias':
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar': {
const fs = this.flowScalar(this.type);
if (!it || it.value)
fc.items.push({ start: [], key: fs, sep: [] });
else if (it.sep)
this.stack.push(fs);
else
Object.assign(it, { key: fs, sep: [] });
return;
}
case 'flow-map-end':
case 'flow-seq-end':
fc.end.push(this.sourceToken);
return;
}
const bv = this.startBlockValue(fc);
/* istanbul ignore else should not happen */
if (bv)
this.stack.push(bv);
else {
yield* this.pop();
yield* this.step();
}
}
else {
const parent = this.peek(2);
if (parent.type === 'block-map' &&
((this.type === 'map-value-ind' && parent.indent === fc.indent) ||
(this.type === 'newline' &&
!parent.items[parent.items.length - 1].sep))) {
yield* this.pop();
yield* this.step();
}
else if (this.type === 'map-value-ind' &&
parent.type !== 'flow-collection') {
const prev = getPrevProps(parent);
const start = getFirstKeyStartProps(prev);
fixFlowSeqItems(fc);
const sep = fc.end.splice(1, fc.end.length);
sep.push(this.sourceToken);
const map = {
type: 'block-map',
offset: fc.offset,
indent: fc.indent,
items: [{ start, key: fc, sep }]
};
this.onKeyLine = true;
this.stack[this.stack.length - 1] = map;
}
else {
yield* this.lineEnd(fc);
}
}
}
flowScalar(type) {
if (this.onNewLine) {
let nl = this.source.indexOf('\n') + 1;
while (nl !== 0) {
this.onNewLine(this.offset + nl);
nl = this.source.indexOf('\n', nl) + 1;
}
}
return {
type,
offset: this.offset,
indent: this.indent,
source: this.source
};
}
startBlockValue(parent) {
switch (this.type) {
case 'alias':
case 'scalar':
case 'single-quoted-scalar':
case 'double-quoted-scalar':
return this.flowScalar(this.type);
case 'block-scalar-header':
return {
type: 'block-scalar',
offset: this.offset,
indent: this.indent,
props: [this.sourceToken],
source: ''
};
case 'flow-map-start':
case 'flow-seq-start':
return {
type: 'flow-collection',
offset: this.offset,
indent: this.indent,
start: this.sourceToken,
items: [],
end: []
};
case 'seq-item-ind':
return {
type: 'block-seq',
offset: this.offset,
indent: this.indent,
items: [{ start: [this.sourceToken] }]
};
case 'explicit-key-ind': {
this.onKeyLine = true;
const prev = getPrevProps(parent);
const start = getFirstKeyStartProps(prev);
start.push(this.sourceToken);
return {
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start }]
};
}
case 'map-value-ind': {
this.onKeyLine = true;
const prev = getPrevProps(parent);
const start = getFirstKeyStartProps(prev);
return {
type: 'block-map',
offset: this.offset,
indent: this.indent,
items: [{ start, key: null, sep: [this.sourceToken] }]
};
}
}
return null;
}
atIndentedComment(start, indent) {
if (this.type !== 'comment')
return false;
if (this.indent <= indent)
return false;
return start.every(st => st.type === 'newline' || st.type === 'space');
}
*documentEnd(docEnd) {
if (this.type !== 'doc-mode') {
if (docEnd.end)
docEnd.end.push(this.sourceToken);
else
docEnd.end = [this.sourceToken];
if (this.type === 'newline')
yield* this.pop();
}
}
*lineEnd(token) {
switch (this.type) {
case 'comma':
case 'doc-start':
case 'doc-end':
case 'flow-seq-end':
case 'flow-map-end':
case 'map-value-ind':
yield* this.pop();
yield* this.step();
break;
case 'newline':
this.onKeyLine = false;
// fallthrough
case 'space':
case 'comment':
default:
// all other values are errors
if (token.end)
token.end.push(this.sourceToken);
else
token.end = [this.sourceToken];
if (this.type === 'newline')
yield* this.pop();
}
}
}
exports.Parser = Parser;