js-yaml
Version:
YAML 1.2 parser and serializer
3,598 lines • 129 kB
JavaScript
/*! js-yaml 5.4.1 https://github.com/nodeca/js-yaml @license MIT */
//#region src/tag.ts
/**
* Returned by a scalar resolver when the source does not match its tag.
*
* @category Tags
*/
var NOT_RESOLVED = Symbol("NOT_RESOLVED");
/**
* Create a normalized scalar tag definition.
*
* @category Tags
*/
function defineScalarTag(tagName, options) {
return {
tagName,
nodeKind: "scalar",
implicit: options.implicit ?? false,
matchByTagPrefix: options.matchByTagPrefix ?? false,
implicitFirstChars: options.implicitFirstChars ?? null,
resolve: options.resolve,
identify: options.identify,
represent: options.represent ?? ((data) => String(data)),
representTagName: options.representTagName ?? (() => tagName)
};
}
/**
* Create a normalized sequence tag definition.
*
* @category Tags
*/
function defineSequenceTag(tagName, options) {
const carrierIsResult = options.finalize === void 0;
return {
tagName,
nodeKind: "sequence",
implicit: false,
matchByTagPrefix: options.matchByTagPrefix ?? false,
create: options.create,
addItem: options.addItem,
finalize: options.finalize ?? ((carrier) => carrier),
carrierIsResult,
identify: options.identify,
represent: options.represent ?? ((data) => data),
representTagName: options.representTagName ?? (() => tagName)
};
}
/**
* Create a normalized mapping tag definition.
*
* @category Tags
*/
function defineMappingTag(tagName, options) {
const carrierIsResult = options.finalize === void 0;
return {
tagName,
nodeKind: "mapping",
implicit: false,
matchByTagPrefix: options.matchByTagPrefix ?? false,
create: options.create,
addPair: options.addPair,
has: options.has,
keys: options.keys,
get: options.get,
finalize: options.finalize ?? ((carrier) => carrier),
carrierIsResult,
identify: options.identify,
represent: options.represent ?? ((data) => data),
representTagName: options.representTagName ?? (() => tagName)
};
}
//#endregion
//#region src/tag/scalar/str.ts
/** @category Tags */
var strTag = defineScalarTag("tag:yaml.org,2002:str", {
resolve: (source) => source,
identify: (data) => typeof data === "string"
});
//#endregion
//#region src/tag/scalar/null_core.ts
var NULL_VALUES$1 = [
"",
"~",
"null",
"Null",
"NULL"
];
/** @category Tags */
var nullCoreTag = defineScalarTag("tag:yaml.org,2002:null", {
implicit: true,
implicitFirstChars: [
"",
"~",
"n",
"N"
],
resolve: (source) => {
if (NULL_VALUES$1.indexOf(source) !== -1) return null;
return NOT_RESOLVED;
},
identify: (object) => object === null,
represent: () => "null"
});
//#endregion
//#region src/tag/scalar/null_json.ts
/** @category Tags */
var nullJsonTag = defineScalarTag("tag:yaml.org,2002:null", {
implicit: true,
implicitFirstChars: ["n"],
resolve: (source, isExplicit) => {
if (source === "null" || isExplicit && source === "") return null;
return NOT_RESOLVED;
},
identify: (object) => object === null,
represent: () => "null"
});
//#endregion
//#region src/tag/scalar/null_yaml11.ts
var NULL_VALUES = [
"",
"~",
"null",
"Null",
"NULL"
];
/** @category Tags */
var nullYaml11Tag = defineScalarTag("tag:yaml.org,2002:null", {
implicit: true,
implicitFirstChars: [
"",
"~",
"n",
"N"
],
resolve: (source) => {
if (NULL_VALUES.indexOf(source) !== -1) return null;
return NOT_RESOLVED;
},
identify: (object) => object === null,
represent: () => "null"
});
//#endregion
//#region src/tag/scalar/bool_core.ts
var TRUE_VALUES$2 = [
"true",
"True",
"TRUE"
];
var FALSE_VALUES$2 = [
"false",
"False",
"FALSE"
];
/** @category Tags */
var boolCoreTag = defineScalarTag("tag:yaml.org,2002:bool", {
implicit: true,
implicitFirstChars: [
"t",
"T",
"f",
"F"
],
resolve: (source) => {
if (TRUE_VALUES$2.indexOf(source) !== -1) return true;
if (FALSE_VALUES$2.indexOf(source) !== -1) return false;
return NOT_RESOLVED;
},
identify: (object) => Object.prototype.toString.call(object) === "[object Boolean]",
represent: (object) => object ? "true" : "false"
});
//#endregion
//#region src/tag/scalar/bool_json.ts
var TRUE_VALUES$1 = ["true"];
var FALSE_VALUES$1 = ["false"];
/** @category Tags */
var boolJsonTag = defineScalarTag("tag:yaml.org,2002:bool", {
implicit: true,
implicitFirstChars: ["t", "f"],
resolve: (source) => {
if (TRUE_VALUES$1.indexOf(source) !== -1) return true;
if (FALSE_VALUES$1.indexOf(source) !== -1) return false;
return NOT_RESOLVED;
},
identify: (object) => Object.prototype.toString.call(object) === "[object Boolean]",
represent: (object) => object ? "true" : "false"
});
//#endregion
//#region src/tag/scalar/bool_yaml11.ts
var TRUE_VALUES = [
"true",
"True",
"TRUE",
"y",
"Y",
"yes",
"Yes",
"YES",
"on",
"On",
"ON"
];
var FALSE_VALUES = [
"false",
"False",
"FALSE",
"n",
"N",
"no",
"No",
"NO",
"off",
"Off",
"OFF"
];
/** @category Tags */
var boolYaml11Tag = defineScalarTag("tag:yaml.org,2002:bool", {
implicit: true,
implicitFirstChars: [
"y",
"Y",
"n",
"N",
"t",
"T",
"f",
"F",
"o",
"O"
],
resolve: (source) => {
if (TRUE_VALUES.indexOf(source) !== -1) return true;
if (FALSE_VALUES.indexOf(source) !== -1) return false;
return NOT_RESOLVED;
},
identify: (object) => Object.prototype.toString.call(object) === "[object Boolean]",
represent: (object) => object ? "true" : "false"
});
//#endregion
//#region src/tag/scalar/int_core.ts
var YAML_INTEGER_IMPLICIT_PATTERN$1 = /* @__PURE__ */ new RegExp("^(?:0o[0-7]+|0x[0-9a-fA-F]+|[-+]?[0-9]+)$");
var YAML_INTEGER_EXPLICIT_PATTERN$1 = /* @__PURE__ */ new RegExp("^(?:[-+]?0b[0-1]+|[-+]?0o[0-7]+|[-+]?0x[0-9a-fA-F]+|[-+]?[0-9]+)$");
function parseYamlInteger$2(source) {
let value = source;
let sign = 1;
if (value[0] === "-" || value[0] === "+") {
if (value[0] === "-") sign = -1;
value = value.slice(1);
}
if (value.startsWith("0b")) return sign * parseInt(value.slice(2), 2);
if (value.startsWith("0o")) return sign * parseInt(value.slice(2), 8);
if (value.startsWith("0x")) return sign * parseInt(value.slice(2), 16);
return sign * parseInt(value, 10);
}
function resolveYamlInteger$2(source, isExplicit) {
if (isExplicit) {
if (!YAML_INTEGER_EXPLICIT_PATTERN$1.test(source)) return NOT_RESOLVED;
} else if (!YAML_INTEGER_IMPLICIT_PATTERN$1.test(source)) return NOT_RESOLVED;
const result = parseYamlInteger$2(source);
return Number.isFinite(result) ? result : NOT_RESOLVED;
}
/** @category Tags */
var intCoreTag = defineScalarTag("tag:yaml.org,2002:int", {
implicit: true,
implicitFirstChars: [
"-",
"+",
..."0123456789"
],
resolve: resolveYamlInteger$2,
identify: (object) => Number.isInteger(object) && !Object.is(object, -0) && object.toString(10).indexOf("e") < 0,
represent: (object) => object.toString(10)
});
//#endregion
//#region src/tag/scalar/int_json.ts
var YAML_INTEGER_IMPLICIT_PATTERN = /* @__PURE__ */ new RegExp("^-?(?:0|[1-9][0-9]*)$");
var YAML_INTEGER_EXPLICIT_PATTERN = /* @__PURE__ */ new RegExp("^(?:[-+]?0b[0-1]+|[-+]?0o[0-7]+|[-+]?0x[0-9a-fA-F]+|[-+]?[0-9]+)$");
function parseYamlInteger$1(source) {
let value = source;
let sign = 1;
if (value[0] === "-" || value[0] === "+") {
if (value[0] === "-") sign = -1;
value = value.slice(1);
}
if (value.startsWith("0b")) return sign * parseInt(value.slice(2), 2);
if (value.startsWith("0o")) return sign * parseInt(value.slice(2), 8);
if (value.startsWith("0x")) return sign * parseInt(value.slice(2), 16);
return sign * parseInt(value, 10);
}
function resolveYamlInteger$1(source, isExplicit) {
if (isExplicit) {
if (!YAML_INTEGER_EXPLICIT_PATTERN.test(source)) return NOT_RESOLVED;
} else if (!YAML_INTEGER_IMPLICIT_PATTERN.test(source)) return NOT_RESOLVED;
const result = parseYamlInteger$1(source);
return Number.isFinite(result) ? result : NOT_RESOLVED;
}
/** @category Tags */
var intJsonTag = defineScalarTag("tag:yaml.org,2002:int", {
implicit: true,
implicitFirstChars: ["-", ..."0123456789"],
resolve: resolveYamlInteger$1,
identify: (object) => Number.isInteger(object) && !Object.is(object, -0) && object.toString(10).indexOf("e") < 0,
represent: (object) => object.toString(10)
});
//#endregion
//#region src/tag/scalar/int_yaml11.ts
var YAML_INTEGER_PATTERN = /* @__PURE__ */ new RegExp("^(?:[-+]?0b[0-1_]+|[-+]?0[0-7_]+|[-+]?0x[0-9a-fA-F_]+|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+|[-+]?(?:0|[1-9][0-9_]*))$");
function parseYamlInteger(source) {
let value = source.replace(/_/g, "");
let sign = 1;
if (value[0] === "-" || value[0] === "+") {
if (value[0] === "-") sign = -1;
value = value.slice(1);
}
if (value.startsWith("0b")) return sign * parseInt(value.slice(2), 2);
if (value.startsWith("0x")) return sign * parseInt(value.slice(2), 16);
if (value.includes(":")) {
let result = 0;
for (const part of value.split(":")) result = result * 60 + Number(part);
return sign * result;
}
if (value !== "0" && value[0] === "0") return sign * parseInt(value, 8);
return sign * parseInt(value, 10);
}
function resolveYamlInteger(source) {
if (!YAML_INTEGER_PATTERN.test(source)) return NOT_RESOLVED;
const result = parseYamlInteger(source);
return Number.isFinite(result) ? result : NOT_RESOLVED;
}
/** @category Tags */
var intYaml11Tag = defineScalarTag("tag:yaml.org,2002:int", {
implicit: true,
implicitFirstChars: [
"-",
"+",
..."0123456789"
],
resolve: resolveYamlInteger,
identify: (object) => Number.isInteger(object) && !Object.is(object, -0) && object.toString(10).indexOf("e") < 0,
represent: (object) => object.toString(10)
});
//#endregion
//#region src/tag/scalar/float_core.ts
var YAML_FLOAT_PATTERN$1 = /* @__PURE__ */ new RegExp("^(?:[-+]?[0-9]+(?:\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?|[-+]?\\.[0-9]+(?:[eE][-+]?[0-9]+)?|[-+]?\\.(?:inf|Inf|INF)|\\.(?:nan|NaN|NAN))$");
var YAML_FLOAT_SPECIAL_PATTERN$1 = /* @__PURE__ */ new RegExp("^(?:[-+]?\\.(?:inf|Inf|INF)|\\.(?:nan|NaN|NAN))$");
function resolveYamlFloat$2(source) {
if (!YAML_FLOAT_PATTERN$1.test(source)) return NOT_RESOLVED;
let value = source.toLowerCase();
const sign = value[0] === "-" ? -1 : 1;
if ("+-".includes(value[0])) value = value.slice(1);
if (value === ".inf") return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
if (value === ".nan") return NaN;
const result = sign * parseFloat(value);
if (Number.isFinite(result) || YAML_FLOAT_SPECIAL_PATTERN$1.test(source)) return result;
return NOT_RESOLVED;
}
function representYamlFloat$2(object) {
if (isNaN(object)) return ".nan";
if (object === Number.POSITIVE_INFINITY) return ".inf";
if (object === Number.NEGATIVE_INFINITY) return "-.inf";
if (Object.is(object, -0)) return "-0.0";
const result = object.toString(10);
return /^[-+]?[0-9]+e/.test(result) ? result.replace("e", ".e") : result;
}
/** @category Tags */
var floatCoreTag = defineScalarTag("tag:yaml.org,2002:float", {
implicit: true,
implicitFirstChars: [
"-",
"+",
".",
..."0123456789"
],
resolve: resolveYamlFloat$2,
identify: (object) => typeof object === "number" && (!Number.isInteger(object) || Object.is(object, -0) || object.toString(10).indexOf("e") >= 0),
represent: representYamlFloat$2
});
//#endregion
//#region src/tag/scalar/float_json.ts
var YAML_FLOAT_IMPLICIT_PATTERN = /* @__PURE__ */ new RegExp("^-?(?:0|[1-9][0-9]*)(?:\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?$");
var YAML_FLOAT_EXPLICIT_PATTERN = /* @__PURE__ */ new RegExp("^(?:[-+]?[0-9]+(?:\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?|[-+]?\\.[0-9]+(?:[eE][-+]?[0-9]+)?|[-+]?\\.(?:inf|Inf|INF)|\\.(?:nan|NaN|NAN))$");
function resolveYamlFloat$1(source, isExplicit) {
if (isExplicit) {
if (!YAML_FLOAT_EXPLICIT_PATTERN.test(source)) return NOT_RESOLVED;
let value = source.toLowerCase();
const sign = value[0] === "-" ? -1 : 1;
if ("+-".includes(value[0])) value = value.slice(1);
if (value === ".inf") return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
if (value === ".nan") return NaN;
const result = sign * parseFloat(value);
return Number.isFinite(result) ? result : NOT_RESOLVED;
}
if (!YAML_FLOAT_IMPLICIT_PATTERN.test(source)) return NOT_RESOLVED;
const result = Number(source);
if (Number.isFinite(result)) return result;
return NOT_RESOLVED;
}
function representYamlFloat$1(object) {
if (isNaN(object)) return ".nan";
if (object === Number.POSITIVE_INFINITY) return ".inf";
if (object === Number.NEGATIVE_INFINITY) return "-.inf";
if (Object.is(object, -0)) return "-0.0";
const result = object.toString(10);
return /^[-+]?[0-9]+e/.test(result) ? result.replace("e", ".e") : result;
}
/** @category Tags */
var floatJsonTag = defineScalarTag("tag:yaml.org,2002:float", {
implicit: true,
implicitFirstChars: ["-", ..."0123456789"],
resolve: resolveYamlFloat$1,
identify: (object) => typeof object === "number" && (!Number.isInteger(object) || Object.is(object, -0) || object.toString(10).indexOf("e") >= 0),
represent: representYamlFloat$1
});
//#endregion
//#region src/tag/scalar/float_yaml11.ts
var YAML_FLOAT_PATTERN = /* @__PURE__ */ new RegExp("^(?:[-+]?(?:(?:[0-9][0-9_]*)?\\.[0-9_]*)(?:[eE][-+][0-9]+)?|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*|[-+]?\\.(?:inf|Inf|INF)|\\.(?:nan|NaN|NAN))$");
var YAML_FLOAT_SPECIAL_PATTERN = /* @__PURE__ */ new RegExp("^(?:[-+]?\\.(?:inf|Inf|INF)|\\.(?:nan|NaN|NAN))$");
function resolveYamlFloat(source) {
if (!YAML_FLOAT_PATTERN.test(source)) return NOT_RESOLVED;
let value = source.toLowerCase().replace(/_/g, "");
const sign = value[0] === "-" ? -1 : 1;
if ("+-".includes(value[0])) value = value.slice(1);
if (value === ".inf") return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
if (value === ".nan") return NaN;
let result = 0;
if (value.includes(":")) {
for (const part of value.split(":")) result = result * 60 + Number(part);
result *= sign;
} else result = sign * parseFloat(value);
if (Number.isFinite(result) || YAML_FLOAT_SPECIAL_PATTERN.test(source)) return result;
return NOT_RESOLVED;
}
function representYamlFloat(object) {
if (isNaN(object)) return ".nan";
if (object === Number.POSITIVE_INFINITY) return ".inf";
if (object === Number.NEGATIVE_INFINITY) return "-.inf";
if (Object.is(object, -0)) return "-0.0";
const result = object.toString(10);
return /^[-+]?[0-9]+e/.test(result) ? result.replace("e", ".e") : result;
}
/** @category Tags */
var floatYaml11Tag = defineScalarTag("tag:yaml.org,2002:float", {
implicit: true,
implicitFirstChars: [
"-",
"+",
".",
..."0123456789"
],
resolve: resolveYamlFloat,
identify: (object) => typeof object === "number" && (!Number.isInteger(object) || Object.is(object, -0) || object.toString(10).indexOf("e") >= 0),
represent: representYamlFloat
});
//#endregion
//#region src/tag/scalar/merge.ts
/**
* Enables merge keys in {@link CORE_SCHEMA} when added with
* {@link Schema.withTags}.
*
* @category Tags
*/
var mergeTag = defineScalarTag("tag:yaml.org,2002:merge", {
implicit: true,
implicitFirstChars: ["<"],
resolve: (source, isExplicit) => {
if (source === "<<" || isExplicit && source === "") return "<<";
return NOT_RESOLVED;
},
identify: () => false
});
//#endregion
//#region src/tag/scalar/binary.ts
var BASE64_PATTERN = /^[A-Za-z0-9+/]*={0,2}$/;
function resolveYamlBinary(source) {
const input = source.replace(/\s/g, "");
if (input.length % 4 !== 0 || !BASE64_PATTERN.test(input)) return NOT_RESOLVED;
const binary = atob(input);
const result = new Uint8Array(binary.length);
for (let index = 0; index < binary.length; index++) result[index] = binary.charCodeAt(index);
return result;
}
function representYamlBinary(object) {
let binary = "";
for (let index = 0; index < object.length; index++) binary += String.fromCharCode(object[index]);
return btoa(binary);
}
/**
* The `!!binary` tag, represented as a `Uint8Array`.
*
* @category Tags
*/
var binaryTag = defineScalarTag("tag:yaml.org,2002:binary", {
resolve: resolveYamlBinary,
identify: (object) => Object.prototype.toString.call(object) === "[object Uint8Array]",
represent: representYamlBinary
});
//#endregion
//#region src/tag/scalar/timestamp.ts
var YAML_DATE_REGEXP = /* @__PURE__ */ new RegExp("^([0-9][0-9][0-9][0-9])-([0-9][0-9])-([0-9][0-9])$");
var YAML_TIMESTAMP_REGEXP = /* @__PURE__ */ new RegExp("^([0-9][0-9][0-9][0-9])-([0-9][0-9]?)-([0-9][0-9]?)(?:[Tt]|[ \\t]+)([0-9][0-9]?):([0-9][0-9]):([0-9][0-9])(?:\\.([0-9]*))?(?:[ \\t]*(Z|([-+])([0-9][0-9]?)(?::([0-9][0-9]))?))?$");
function makeUtcDate(year, month, day, hour = 0, minute = 0, second = 0, fraction = 0) {
const date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
date.setUTCFullYear(year, month, day);
return date;
}
function resolveYamlTimestamp(source) {
let match = YAML_DATE_REGEXP.exec(source);
if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(source);
if (match === null) return NOT_RESOLVED;
const year = +match[1];
const month = +match[2] - 1;
const day = +match[3];
if (!match[4]) {
const date = makeUtcDate(year, month, day);
if (date.getUTCFullYear() !== year || date.getUTCMonth() !== month || date.getUTCDate() !== day) return NOT_RESOLVED;
return date;
}
const hour = +match[4];
const minute = +match[5];
const second = +match[6];
let fraction = 0;
if (hour > 23 || minute > 59 || second > 59) return NOT_RESOLVED;
if (match[7]) {
let value = match[7].slice(0, 3);
while (value.length < 3) value += "0";
fraction = +value;
}
const date = makeUtcDate(year, month, day, hour, minute, second, fraction);
if (date.getUTCFullYear() !== year || date.getUTCMonth() !== month || date.getUTCDate() !== day) return NOT_RESOLVED;
if (match[9]) {
const offsetHour = +match[10];
const offsetMinute = +(match[11] || 0);
if (offsetHour > 23 || offsetMinute > 59) return NOT_RESOLVED;
const offset = (offsetHour * 60 + offsetMinute) * 6e4;
date.setTime(date.getTime() - (match[9] === "-" ? -offset : offset));
}
return date;
}
/**
* The YAML 1.1 `!!timestamp` tag, represented as a JavaScript `Date`.
*
* @category Tags
*/
var timestampTag = defineScalarTag("tag:yaml.org,2002:timestamp", {
implicit: true,
implicitFirstChars: [..."0123456789"],
resolve: resolveYamlTimestamp,
identify: (object) => object instanceof Date,
represent: (object) => object.toISOString()
});
//#endregion
//#region src/tag/sequence/seq.ts
/** @category Tags */
var seqTag = defineSequenceTag("tag:yaml.org,2002:seq", {
create: () => [],
addItem: (container, item) => {
container.push(item);
},
identify: Array.isArray
});
//#endregion
//#region src/common/object.ts
function isPlainObject(data) {
if (data === null || typeof data !== "object" || Array.isArray(data)) return false;
const prototype = Object.getPrototypeOf(data);
return prototype === null || prototype === Object.prototype;
}
function pick(object, keys) {
const result = {};
for (const key of keys) if (object[key] !== void 0) result[key] = object[key];
return result;
}
//#endregion
//#region src/tag/sequence/omap.ts
/**
* Provided only for YAML 1.1 compatibility and supported by the loader only.
* JavaScript has no dedicated class to represent this type, so it cannot be
* identified and dumped.
*
* ```yaml
* !!omap
* - one: 1
* - two: 2
* ```
*
* is loaded as
*
* ```javascript
* [
* { one: 1 },
* { two: 2 }
* ]
* ```
*
* @category Tags
*/
var omapTag = defineSequenceTag("tag:yaml.org,2002:omap", {
create: () => ({
list: [],
seen: /* @__PURE__ */ new Set()
}),
addItem: (carrier, item) => {
let key;
if (item instanceof Map) {
if (item.size !== 1) return "cannot resolve an ordered map item";
key = item.keys().next().value;
} else if (isPlainObject(item)) {
const itemKeys = Object.keys(item);
if (itemKeys.length !== 1) return "cannot resolve an ordered map item";
key = itemKeys[0];
} else return "cannot resolve an ordered map item";
if (carrier.seen.has(key)) return "duplicate key in ordered map";
carrier.seen.add(key);
carrier.list.push(item);
return "";
},
finalize: (carrier) => carrier.list,
identify: () => false
});
//#endregion
//#region src/tag/sequence/pairs.ts
/**
* Provided only for YAML 1.1 compatibility and supported by the loader only.
* JavaScript has no dedicated class to represent this type, so it cannot be
* identified and dumped.
*
* ```yaml
* !!pairs
* - one: 1
* - two: 2
* ```
*
* is loaded as
*
* ```javascript
* [
* ['one', 1],
* ['two', 2]
* ]
* ```
*
* @category Tags
*/
var pairsTag = defineSequenceTag("tag:yaml.org,2002:pairs", {
create: () => [],
addItem: (container, item) => {
if (item instanceof Map) {
if (item.size !== 1) return "cannot resolve a pairs item";
container.push(item.entries().next().value);
return "";
}
if (Object.prototype.toString.call(item) !== "[object Object]") return "cannot resolve a pairs item";
const object = item;
const keys = Object.keys(object);
if (keys.length !== 1) return "cannot resolve a pairs item";
container.push([keys[0], object[keys[0]]]);
return "";
},
identify: () => false
});
//#endregion
//#region src/tag/mapping/map.ts
/**
* This is the default mapping implementation. It uses `{}` objects and has only
* partial functionality due to language limitations. This choice was made
* because users expect to get JavaScript objects, and it was left unchanged to
* avoid too many breaking changes in the v5 release.
*
* Side effects:
*
* - `Object.hasOwn()` checks or `for...of` loops are required for safe use (to
* avoid falling through to prototypes).
* - Only scalar string keys are supported properly.
* - Other scalar keys, such as `null` and numbers, are converted to strings.
* This is historical behaviour, and it can cause side effects such as
* problems with `!!merge`.
*
* Note that non-string scalar keys may be deprecated in future versions.
*
* Ideally, use {@link realMapTag} instead.
*
* @category Tags
*/
var mapTag = defineMappingTag("tag:yaml.org,2002:map", {
create: () => ({}),
identify: isPlainObject,
represent: (o) => {
const map = /* @__PURE__ */ new Map();
for (const key of Object.keys(o)) map.set(key, o[key]);
return map;
},
addPair: (container, key, value) => {
if (key !== null && typeof key === "object") return "object-based map does not support complex keys";
const normalizedKey = String(key);
if (normalizedKey === "__proto__") Object.defineProperty(container, normalizedKey, {
value,
enumerable: true,
configurable: true,
writable: true
});
else container[normalizedKey] = value;
return "";
},
has: (container, key) => {
if (key !== null && typeof key === "object") return false;
return Object.prototype.hasOwnProperty.call(container, String(key));
},
keys: (container) => Object.keys(container),
get: (container, key) => {
const normalizedKey = String(key);
if (!Object.prototype.hasOwnProperty.call(container, normalizedKey)) return null;
return container[normalizedKey];
}
});
//#endregion
//#region src/tag/mapping/set.ts
/**
* The YAML 1.1 `!!set` tag, represented as a JavaScript `Set`.
*
* @category Tags
*/
var setTag = defineMappingTag("tag:yaml.org,2002:set", {
create: () => /* @__PURE__ */ new Set(),
identify: (data) => data instanceof Set,
represent: (data) => {
const map = /* @__PURE__ */ new Map();
for (const key of data) map.set(key, null);
return map;
},
addPair: (container, key, value) => {
if (value !== null) return "cannot resolve a set item";
container.add(key);
return "";
},
has: (container, key) => container.has(key),
keys: (container) => container.keys(),
get: () => null
});
//#endregion
//#region src/schema.ts
function createTagDefinitionMap() {
return {
scalar: Object.create(null),
sequence: Object.create(null),
mapping: Object.create(null)
};
}
function createTagDefinitionListMap() {
return {
scalar: [],
sequence: [],
mapping: []
};
}
function compileTags(tags) {
const result = [];
for (const tag of tags) {
let index = result.length;
for (let previousIndex = 0; previousIndex < result.length; previousIndex++) {
const previous = result[previousIndex];
if (previous.nodeKind === tag.nodeKind && previous.tagName === tag.tagName && previous.matchByTagPrefix === tag.matchByTagPrefix) {
index = previousIndex;
break;
}
}
result[index] = tag;
}
return result;
}
/**
* Controls tag resolution when loading and type selection when dumping.
*
* @category Schemas
*/
var Schema = class Schema {
tags;
/** @internal */
implicitScalarTags;
/**
* Dispatch implicit scalar resolvers by `source.charAt(0)`. Each bucket holds
* the resolvers that may match that key, in schema order; a key absent from
* the map uses
* {@link Schema.implicitScalarAnyFirstChar}
* (resolvers that declared no first-char constraint, so they apply to any
* first character).
*/
implicitScalarByFirstChar;
implicitScalarAnyFirstChar;
/**
* The default scalar tag (`!!str`), resolved once so the composer's fallback
* for unresolved plain scalars avoids a keyed lookup per scalar.
*
* @internal
*/
defaultScalarTag;
/**
* The default container tags (`!!seq` / `!!map`), used by the dumper: when a
* value is identified by its default tag, the tag is implicit and not
* printed. Undefined if the schema does not define them (then such values
* can't be dumped).
*
* @internal
*/
defaultSequenceTag;
/** @internal */
defaultMappingTag;
exact;
prefix;
constructor(tags) {
const compiledTags = compileTags(tags);
const implicitScalarTags = [];
const exact = createTagDefinitionMap();
const prefix = createTagDefinitionListMap();
for (const tag of compiledTags) {
if (tag.nodeKind === "scalar" && tag.implicit) {
if (tag.matchByTagPrefix) throw new Error("Implicit scalar tags cannot match by tag prefix");
implicitScalarTags.push(tag);
}
switch (tag.nodeKind) {
case "scalar":
if (tag.matchByTagPrefix) prefix.scalar.push(tag);
else exact.scalar[tag.tagName] = tag;
break;
case "sequence":
if (tag.matchByTagPrefix) prefix.sequence.push(tag);
else exact.sequence[tag.tagName] = tag;
break;
case "mapping":
if (tag.matchByTagPrefix) prefix.mapping.push(tag);
else exact.mapping[tag.tagName] = tag;
break;
}
}
const implicitScalarAnyFirstChar = implicitScalarTags.filter((tag) => tag.implicitFirstChars === null);
const keys = /* @__PURE__ */ new Set();
for (const tag of implicitScalarTags) if (tag.implicitFirstChars !== null) for (const key of tag.implicitFirstChars) keys.add(key);
const implicitScalarByFirstChar = /* @__PURE__ */ new Map();
for (const key of keys) implicitScalarByFirstChar.set(key, implicitScalarTags.filter((tag) => tag.implicitFirstChars === null || tag.implicitFirstChars.indexOf(key) !== -1));
const defaultScalarTag = exact.scalar["tag:yaml.org,2002:str"];
if (!defaultScalarTag) throw new Error("schema does not define the default scalar tag (tag:yaml.org,2002:str)");
this.tags = compiledTags;
this.implicitScalarTags = implicitScalarTags;
this.implicitScalarByFirstChar = implicitScalarByFirstChar;
this.implicitScalarAnyFirstChar = implicitScalarAnyFirstChar;
this.defaultScalarTag = defaultScalarTag;
this.defaultSequenceTag = exact.sequence["tag:yaml.org,2002:seq"];
this.defaultMappingTag = exact.mapping["tag:yaml.org,2002:map"];
this.exact = exact;
this.prefix = prefix;
}
/** @internal */
lookupScalarTag(tagName) {
const exactTag = this.exact.scalar[tagName];
if (exactTag) return exactTag;
for (const tag of this.prefix.scalar) if (tagName.startsWith(tag.tagName)) return tag;
}
/** @internal */
lookupSequenceTag(tagName) {
const exactTag = this.exact.sequence[tagName];
if (exactTag) return exactTag;
for (const tag of this.prefix.sequence) if (tagName.startsWith(tag.tagName)) return tag;
}
/** @internal */
lookupMappingTag(tagName) {
const exactTag = this.exact.mapping[tagName];
if (exactTag) return exactTag;
for (const tag of this.prefix.mapping) if (tagName.startsWith(tag.tagName)) return tag;
}
/** @internal */
resolveImplicitScalarTag(source) {
const candidates = this.implicitScalarByFirstChar.get(source.charAt(0)) ?? this.implicitScalarAnyFirstChar;
for (const tag of candidates) {
const value = tag.resolve(source, false, tag.tagName);
if (value !== NOT_RESOLVED) return {
value,
tag
};
}
const tag = this.defaultScalarTag;
return {
value: tag.resolve(source, false, tag.tagName),
tag
};
}
/**
* Creates a new schema with the specified tags added. If a tag already
* exists, it is replaced by the specified tag.
*
* @example
*
* ```javascript
* import { CORE_SCHEMA, mergeTag, realMapTag } from 'js-yaml'
*
* const schema = CORE_SCHEMA.withTags(mergeTag, realMapTag)
* ```
*/
withTags(...tags) {
let flatTags = [];
for (const tag of tags) flatTags = flatTags.concat(tag);
return new Schema([...this.tags, ...flatTags]);
}
};
/**
* The YAML 1.2 Failsafe Schema: strings, sequences, and mappings.
*
* @category Schemas
*/
var FAILSAFE_SCHEMA = new Schema([
strTag,
seqTag,
mapTag
]);
/**
* The YAML 1.2 JSON Schema. It uses JSON scalar forms while retaining YAML
* collection syntax.
*
* @category Schemas
*/
var JSON_SCHEMA = new Schema([
...FAILSAFE_SCHEMA.tags,
nullJsonTag,
boolJsonTag,
intJsonTag,
floatJsonTag
]);
/**
* The default schema for the loaders. Note, {@link CORE_SCHEMA} comes
* without the `!!merge` tag. You can easily enable it if needed.
*
* @example
* Enable {@link mergeTag}:
*
* ```javascript
* import { load, CORE_SCHEMA, mergeTag } from 'js-yaml'
*
* try {
* load(data, { schema: CORE_SCHEMA.withTags(mergeTag) })
* } catch (e) {
* console.error(e)
* }
* ```
*
* @category Schemas
*/
var CORE_SCHEMA = new Schema([
...FAILSAFE_SCHEMA.tags,
nullCoreTag,
boolCoreTag,
intCoreTag,
floatCoreTag
]);
/**
* YAML 1.1-compatible schema.
*
* @category Schemas
*/
var YAML11_SCHEMA = new Schema([
...FAILSAFE_SCHEMA.tags,
nullYaml11Tag,
boolYaml11Tag,
intYaml11Tag,
floatYaml11Tag,
timestampTag,
mergeTag,
binaryTag,
omapTag,
pairsTag,
setTag
]);
/**
* The dumper schema for maximum compatibility. It combines all supported type
* variants from YAML 1.1 and YAML 1.2 so strings matching any of them are
* quoted. This makes the generated YAML more compatible with other parsers.
*
* The schema is based on YAML 1.1, but extends `!!int` and `!!float` to accept
* both YAML 1.1 and Core Schema forms, since Core Schema supports some forms
* that YAML 1.1 does not.
*
* @category Schemas
*/
var DUMP_SCHEMA = YAML11_SCHEMA.withTags({
...intYaml11Tag,
resolve: (source, isExplicit, tagName) => {
const result = intYaml11Tag.resolve(source, isExplicit, tagName);
return result === NOT_RESOLVED ? intCoreTag.resolve(source, isExplicit, tagName) : result;
}
}, {
...floatYaml11Tag,
resolve: (source, isExplicit, tagName) => {
const result = floatYaml11Tag.resolve(source, isExplicit, tagName);
return result === NOT_RESOLVED ? floatCoreTag.resolve(source, isExplicit, tagName) : result;
}
});
//#endregion
//#region src/tag/mapping/real_map.ts
/**
* Recommended when non-string keys are actually needed. It uses native
* JavaScript `Map` objects, so keys keep their constructed types instead of
* being converted to strings.
*
* It is not the default to avoid widespread breaking changes in existing
* projects. `Map` has a different access API and does not pass deep equality
* checks against `{}`-based fixtures. Alongside the other changes in v5,
* making it the default was considered too disruptive.
*
* If these differences are acceptable for your project, we recommend using
* {@link realMapTag} to guarantee the absence of problems and side effects.
*
* @example
* Enable {@link realMapTag}:
*
* ```javascript
* import { load, CORE_SCHEMA, realMapTag } from 'js-yaml'
*
* try {
* load(data, { schema: CORE_SCHEMA.withTags(realMapTag) })
* } catch (e) {
* console.error(e)
* }
* ```
*
* @category Tags
*/
var realMapTag = defineMappingTag("tag:yaml.org,2002:map", {
create: () => /* @__PURE__ */ new Map(),
addPair: (container, key, value) => {
container.set(key, value);
return "";
},
has: (container, key) => container.has(key),
keys: (container) => container.keys(),
get: (container, key) => container.get(key),
identify: (data) => data instanceof Map || isPlainObject(data),
represent: (data) => {
if (data instanceof Map) return data;
const map = /* @__PURE__ */ new Map();
const obj = data;
for (const key of Object.keys(obj)) map.set(key, obj[key]);
return map;
}
});
//#endregion
//#region src/tag/mapping/legacy_map.ts
function normalizeKey(key) {
if (Array.isArray(key)) {
const array = Array.prototype.slice.call(key);
for (let index = 0; index < array.length; index++) {
if (Array.isArray(array[index])) return null;
if (typeof array[index] === "object" && Object.prototype.toString.call(array[index]) === "[object Object]") array[index] = "[object Object]";
}
return String(array);
}
if (typeof key === "object" && Object.prototype.toString.call(key) === "[object Object]") return "[object Object]";
return String(key);
}
/**
* This implementation exists solely to reproduce v4 behavior exactly. Its use
* is strongly discouraged. If complex or non-string keys are needed, use
* {@link realMapTag} instead.
*
* @category Tags
*/
var legacyMapTag = defineMappingTag("tag:yaml.org,2002:map", {
create: () => ({}),
identify: isPlainObject,
represent: (o) => {
const map = /* @__PURE__ */ new Map();
for (const key of Object.keys(o)) map.set(key, o[key]);
return map;
},
addPair: (container, key, value) => {
const normalizedKey = normalizeKey(key);
if (normalizedKey === null) return "nested arrays are not supported inside keys";
if (normalizedKey === "__proto__") Object.defineProperty(container, normalizedKey, {
value,
enumerable: true,
configurable: true,
writable: true
});
else container[normalizedKey] = value;
return "";
},
has: (container, key) => {
const normalizedKey = normalizeKey(key);
return normalizedKey !== null && Object.prototype.hasOwnProperty.call(container, normalizedKey);
},
keys: (container) => Object.keys(container),
get: (container, key) => {
const normalizedKey = String(key);
if (!Object.prototype.hasOwnProperty.call(container, normalizedKey)) return null;
return container[normalizedKey];
}
});
//#endregion
//#region src/common/snippet.ts
var DEFAULT_SNIPPET_OPTIONS = {
maxLength: 79,
indent: 1,
linesBefore: 3,
linesAfter: 2
};
function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
let head = "";
let tail = "";
const maxHalfLength = Math.floor(maxLineLength / 2) - 1;
if (position - lineStart > maxHalfLength) {
head = " ... ";
lineStart = position - maxHalfLength + head.length;
}
if (lineEnd - position > maxHalfLength) {
tail = " ...";
lineEnd = position + maxHalfLength - tail.length;
}
return {
str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, "→") + tail,
pos: position - lineStart + head.length
};
}
function padStart(string, max) {
return " ".repeat(Math.max(max - string.length, 0)) + string;
}
function makeSnippet(mark, options) {
if (!mark.buffer) return null;
const opts = {
...DEFAULT_SNIPPET_OPTIONS,
...options
};
const re = /\r?\n|\r|\0/g;
const lineStarts = [0];
const lineEnds = [];
let match;
let foundLineNo = -1;
while (match = re.exec(mark.buffer)) {
lineEnds.push(match.index);
lineStarts.push(match.index + match[0].length);
if (mark.position <= match.index && foundLineNo < 0) foundLineNo = lineStarts.length - 2;
}
if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
let result = "";
const lineNoLength = Math.min(mark.line + opts.linesAfter, lineEnds.length).toString().length;
const maxLineLength = opts.maxLength - (opts.indent + lineNoLength + 3);
for (let i = 1; i <= opts.linesBefore; i++) {
if (foundLineNo - i < 0) break;
const line = getLine(mark.buffer, lineStarts[foundLineNo - i], lineEnds[foundLineNo - i], mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]), maxLineLength);
result = `${" ".repeat(opts.indent)}${padStart((mark.line - i + 1).toString(), lineNoLength)} | ${line.str}\n${result}`;
}
const line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
result += `${" ".repeat(opts.indent)}${padStart((mark.line + 1).toString(), lineNoLength)} | ${line.str}\n`;
result += `${"-".repeat(opts.indent + lineNoLength + 3 + line.pos)}^\n`;
for (let i = 1; i <= opts.linesAfter; i++) {
if (foundLineNo + i >= lineEnds.length) break;
const line = getLine(mark.buffer, lineStarts[foundLineNo + i], lineEnds[foundLineNo + i], mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]), maxLineLength);
result += `${" ".repeat(opts.indent)}${padStart((mark.line + i + 1).toString(), lineNoLength)} | ${line.str}\n`;
}
return result.replace(/\n$/, "");
}
//#endregion
//#region src/common/exception.ts
function formatError(exception, compact) {
let where = "";
if (!exception.mark) return exception.reason;
if (exception.mark.name) where += `in "${exception.mark.name}" `;
where += `(${exception.mark.line + 1}:${exception.mark.column + 1})`;
if (!compact && exception.mark.snippet) where += `\n\n${exception.mark.snippet}`;
return `${exception.reason} ${where}`;
}
/**
* A YAML error. Unlike an ordinary `Error`, it adds a source snippet showing
* the location of the problem to the error message, when available.
*
* @category Main
*/
var YAMLException = class YAMLException extends Error {
reason;
mark;
/**
* Optional `mark` contains source snippet data. Usually, use
* {@link YAMLException.throwAt} instead of passing it directly.
*/
constructor(reason, mark) {
super();
this.name = "YAMLException";
this.reason = reason;
this.mark = mark;
this.message = formatError(this, false);
if (Error.captureStackTrace) Error.captureStackTrace(this, this.constructor);
}
/**
* Returns the formatted error, omitting the source snippet in compact mode.
*/
toString(compact) {
return `${this.name}: ${formatError(this, compact)}`;
}
/**
* Builds a YAMLException with a source snippet and throws it. `source` is
* the raw input text; `position` is an offset into it.
*/
static throwAt(source, position, message, filename = "") {
let line = 0;
let lineStart = 0;
for (let index = 0; index < position; index++) {
const ch = source.charCodeAt(index);
if (ch === 10) {
line++;
lineStart = index + 1;
} else if (ch === 13) {
line++;
if (source.charCodeAt(index + 1) === 10) index++;
lineStart = index + 1;
}
}
const mark = {
name: filename,
buffer: source,
position,
line,
column: position - lineStart
};
mark.snippet = makeSnippet(mark);
throw new YAMLException(message, mark);
}
};
//#endregion
//#region src/parser/events.ts
/** @category Events */
var EVENT_ID = {
DOCUMENT: 1,
SEQUENCE: 2,
MAPPING: 3,
SCALAR: 4,
ALIAS: 5,
POP: 6
};
/** @category Nodes */
var SCALAR_STYLE = {
PLAIN: 1,
SINGLE_QUOTED: 2,
DOUBLE_QUOTED: 3,
LITERAL_BLOCK: 4,
FOLDED_BLOCK: 5
};
/** @category Nodes */
var COLLECTION_STYLE = {
BLOCK: 1,
FLOW: 2
};
/** @category Nodes */
var CHOMPING_MODE = {
CLIP: 1,
STRIP: 2,
KEEP: 3
};
//#endregion
//#region src/parser/parser_scalar.ts
var NO_RANGE$3 = -1;
function simpleEscapeSequence(c) {
switch (c) {
case 48: return "\0";
case 97: return "\x07";
case 98: return "\b";
case 116: return " ";
case 9: return " ";
case 110: return "\n";
case 118: return "\v";
case 102: return "\f";
case 114: return "\r";
case 101: return "\x1B";
case 32: return " ";
case 34: return "\"";
case 47: return "/";
case 92: return "\\";
case 78: return "
";
case 95: return "\xA0";
case 76: return "\u2028";
case 80: return "\u2029";
default: return "";
}
}
var simpleEscapeCheck = new Array(256);
var simpleEscapeMap = new Array(256);
for (let i = 0; i < 256; i++) {
simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
simpleEscapeMap[i] = simpleEscapeSequence(i);
}
function charFromCodepoint(c) {
if (c <= 65535) return String.fromCharCode(c);
return String.fromCharCode((c - 65536 >> 10) + 55296, (c - 65536 & 1023) + 56320);
}
function fromHexCode$1(c) {
if (c >= 48 && c <= 57) return c - 48;
return (c | 32) - 97 + 10;
}
function escapedHexLen$1(c) {
if (c === 120) return 2;
if (c === 117) return 4;
return 8;
}
function skipFoldedBreaks(input, position, end) {
let breaks = 0;
while (position < end) {
const ch = input.charCodeAt(position);
if (ch === 10) {
breaks++;
position++;
} else if (ch === 13) {
breaks++;
position++;
if (input.charCodeAt(position) === 10) position++;
} else if (ch === 32 || ch === 9) position++;
else break;
}
return {
position,
breaks
};
}
function foldedBreaks(count) {
if (count === 1) return " ";
return "\n".repeat(count - 1);
}
function getPlainValue(input, start, end) {
let result = "";
let position = start;
let captureStart = start;
let captureEnd = start;
while (position < end) {
const ch = input.charCodeAt(position);
if (ch === 10 || ch === 13) {
result += input.slice(captureStart, captureEnd);
const fold = skipFoldedBreaks(input, position, end);
result += foldedBreaks(fold.breaks);
position = captureStart = captureEnd = fold.position;
} else {
position++;
if (ch !== 32 && ch !== 9) captureEnd = position;
}
}
return result + input.slice(captureStart, captureEnd);
}
function getSingleQuotedValue(input, start, end) {
let result = "";
let position = start;
let captureStart = start;
let captureEnd = start;
while (position < end) {
const ch = input.charCodeAt(position);
if (ch === 39) {
result += input.slice(captureStart, position) + "'";
position += 2;
captureStart = captureEnd = position;
} else if (ch === 10 || ch === 13) {
result += input.slice(captureStart, captureEnd);
const fold = skipFoldedBreaks(input, position, end);
result += foldedBreaks(fold.breaks);
position = captureStart = captureEnd = fold.position;
} else {
position++;
if (ch !== 32 && ch !== 9) captureEnd = position;
}
}
return result + input.slice(captureStart, end);
}
function getDoubleQuotedValue(input, start, end) {
let result = "";
let position = start;
let captureStart = start;
let captureEnd = start;
while (position < end) {
const ch = input.charCodeAt(position);
if (ch === 92) {
result += input.slice(captureStart, position);
position++;
const escaped = input.charCodeAt(position);
if (escaped === 10 || escaped === 13) position = skipFoldedBreaks(input, position, end).position;
else if (escaped < 256 && simpleEscapeCheck[escaped]) {
result += simpleEscapeMap[escaped];
position++;
} else {
let hexLength = escapedHexLen$1(escaped);
let hexResult = 0;
for (; hexLength > 0; hexLength--) {
position++;
const digit = fromHexCode$1(input.charCodeAt(position));
hexResult = (hexResult << 4) + digit;
}
result += charFromCodepoint(hexResult);
position++;
}
captureStart = captureEnd = position;
} else if (ch === 10 || ch === 13) {
result += input.slice(captureStart, captureEnd);
const fold = skipFoldedBreaks(input, position, end);
result += foldedBreaks(fold.breaks);
position = captureStart = captureEnd = fold.position;
} else {
position++;
if (ch !== 32 && ch !== 9) captureEnd = position;
}
}
return result + input.slice(captureStart, end);
}
function getBlockValue(input, start, end, indent, chomping, folded) {
const textIndent = indent < 0 ? 0 : indent;
const region = input.slice(start, end).replace(/\r\n?/g, "\n");
const lines = region === "" ? [] : (region.endsWith("\n") ? region.slice(0, -1) : region).split("\n");
let result = "";
let didReadContent = false;
let emptyLines = 0;
let atMoreIndented = false;
for (const line of lines) {
let column = 0;
while (column < textIndent && line.charCodeAt(column) === 32) column++;
if (indent < 0 || column >= line.length) {
emptyLines++;
continue;
}
const content = line.slice(textIndent);
const first = content.charCodeAt(0);
if (folded) if (first === 32 || first === 9) {
atMoreIndented = true;
result += "\n".repeat(didReadContent ? 1 + emptyLines : emptyLines);
} else if (atMoreIndented) {
atMoreIndented = false;
result += "\n".repeat(emptyLines + 1);
} else if (emptyLines === 0) {
if (didReadContent) result += " ";
} else result += "\n".repeat(emptyLines);
else result += "\n".repeat(didReadContent ? 1 + emptyLines : emptyLines);
result += content;
didReadContent = true;
emptyLines = 0;
}
if (chomping === CHOMPING_MODE.KEEP) result += "\n".repeat(didReadContent ? 1 + emptyLines : emptyLines);
else if (chomping !== CHOMPING_MODE.STRIP) {
if (didReadContent) result += "\n";
}
return result;
}
/**
* Decodes the scalar referenced by event offsets in `input`.
*
* @category Events
*/
function getScalarValue(input, scalar) {
if (scalar.valueStart === NO_RANGE$3) return "";
const { valueStart, valueEnd } = scalar;
if (scalar.fast) return input.slice(valueStart, valueEnd);
switch (scalar.style) {
case SCALAR_STYLE.SINGLE_QUOTED: return getSingleQuotedValue(input, valueStart, valueEnd);
case SCALAR_STYLE.DOUBLE_QUOTED: return getDoubleQuotedValue(input, valueStart, valueEnd);
case SCALAR_STYLE.LITERAL_BLOCK: return getBlockValue(input, valueStart, valueEnd, scalar.indent, scalar.chomping, false);
case SCALAR_STYLE.FOLDED_BLOCK: return getBlockValue(input, valueStart, valueEnd, scalar.indent, scalar.chomping, true);
default: return getPlainValue(input, valueStart, valueEnd);
}
}
//#endregion
//#region src/common/tagname.ts
var DEFAULT_TAG_HANDLERS = Object.assign(Object.create(null), {
"!": "!",
"!!": "tag:yaml.org,2002:"
});
function tagPercentEncode(source) {
return encodeURI(source).replace(/!/g, "%21");
}
function tagNameFull(rawTag, tagHandlers) {
if (rawTag.startsWith("!<") && rawTag.endsWith(">")) return decodeURIComponent(rawTag.slice(2, -1));
const handleEnd = rawTag.indexOf("!", 1);
const handle = handleEnd === -1 ? "!" : rawTag.slice(0, handleEnd + 1);
const prefix = tagHandlers?.[handle] ?? DEFAULT_TAG_HANDLERS[handle] ?? handle;
return decodeURIComponent(prefix) + decodeURIComponent(rawTag.slice(handle.length));
}
function tagNameShort(fullTag) {
let tag = fullTag;
if (tag.charCodeAt(0) === 33) {
tag = tag.slice(1);
return `!${tagPercentEncode(tag)}`;
}
if (tag.slice(0, 18) === "tag:yaml.org,2002:") return `!!${tagPercentEncode(tag.slice(18))}`;
return `!<${tagPercentEncode(tag)}>`;
}
//#endregion
//#region src/parser/constructor.ts
var NO_RANGE$2 = -1;
var MERGE_TAG_NAME = "tag:yaml.org,2002:merge";
var DEFAULT_CONSTRUCTOR_OPTIONS = {
filename: "",
schema: CORE_SCHEMA,
json: false,
maxTotalMergeKeys: 1e4,
maxAliases: -1
};
function eventPosition$1(event) {
if ("tagStart" in event && event.tagStart !== NO_RANGE$2) return event.tagStart;
if ("anchorStart" in event && event.anchorStart !== NO_RANGE$2) return event.anchorStart;
if ("valueStart" in event && event.valueStart !== NO_RANGE$2) return event.valueStart;
if ("start" in event) return event.start;
return 0;
}
function throwError$1(state, message) {
YAMLException.throwAt(state.source, state.position, message, state.filename);
}
function finalizeCollection(state, position, tag, carrier) {
try {
return tag.finalize(carrier);
} catch (error) {
if (error instanceof YAMLException) throw error;
YAMLException.throwAt(state.source, position, error instanceof Error ? error.message : String(error), state.filename);
}
}
function constructScalar(state, event) {
const source = getScalarValue(state.source, event);
const rawTag = event.tagStart === NO_RANGE$2 ? "" : state.source.slice(event.tagStart, event.tagEnd);
const strTag = state.schema.defaultScalarTag;
if (rawTag !== "") {
if (rawTag === "!") return {
value: source,
tag: strTag
};
const tagName = tagNameFull(rawTag, state.tagHandlers);
const scalarTag = state.schema.lookupScalarTag(tagName);
if (scalarTag) {
const result = scalarTag.resolve(source, true, tagName);
if (result === NOT_RESOLVED) throwError$1(state, `cannot resolve a node with !<${tagName}> explicit tag`);
return {
value: result,
tag: scalarTag
};
}
const collectionTagDef = state.schema.lookupMappingTag(tagName) ?? state.schema.lookupSequenceTag(tagName);
if (collectionTagDef) {
if (source !== "") throwError$1(state, `cannot resolve a node with !<${tagName}> explicit tag`);
const carrier = collectionTagDef.create(tagName);
return {
value: collectionTagDef.carrierIsResult ? carrier : finalizeCollection(state, state.position, collectionTagDef, carrier),
tag: collectionTagDef
};
}
throwError$1(state, `unknown scalar tag !<${tagName}>`);
}
if (event.style === SCALAR_STYLE.PLAIN) return state.schema.resolveImplicitScalarTag(source);
return {
value: strTag.resolve(source, false, strTag.tagName),
tag: strTag
};
}
function collectionTagName(state, event, defaultTagName) {
const rawTag = event.tagStart === NO_RANGE$2 ? "" : state.source.slice(event.tagStart, event.tagEnd);
return rawTag === "" || rawTag === "!" ? defaultTagName : tagNameFull(rawTag, state.tagHandlers);
}
function isMappingTag(tag) {
return tag.nodeKind === "mapping";
}
function chargeMergeWork(state) {
state.totalMergeKeys++;
if (state.maxTotalMergeKeys !== -1 && state.totalMergeKeys > state.maxTotalMergeKeys) throwError$1(state, `merge keys exceeded maxTotalMergeKeys (${state.maxTotalMergeKeys})`);
}
function mergeKeys(state, frame, source, sourceTag) {
chargeMergeWork(state);
for (const sourceKey of sourceTag.keys(source)) {
chargeMergeWork(state);
if (frame.tag.has(frame.value, sourceKey)) continue;
const err = frame.tag.addPair(frame.value, sourceKey, sourceTag.get(source, sourceKey));
if (err) throwError$1(state, err);
frame.overridable ??= /* @__PURE__ */ new Set();
frame.overridable.add(sourceKey);
}
}
function mergeSource(state, frame, source, sourceTag) {
state.position = frame.keyPosition;
if (isMappingTag(sourceTag)) mergeKeys(state, frame, source, sourceTag);
else if (sourceTag.nodeKind === "sequence" && Array.isArray(source)) {
if (source.length > 100) throwError$1(state, "abnormal merge sequence size");
for (const element of source) {
const elementTag = state.nodeTags.get(element);
if (!elementTag) throwError$1(state, "cannot merge mappings; the provided source object is unacceptable");
mergeKeys(state, frame, element, elementTag);
}
} else throwError$1(state, "cannot merge mappings; the provided source object is unacceptable");
}
function addMappingValue(state, frame, key, value, tag) {
state.position = frame.keyPosition;
if (frame.keyIsMerge) {
mergeSource(state, frame, value, tag);
return;
}
if (!state.json && frame.tag.has(frame.value, key) && !frame.overridable?.has(key)) throwError$1(state, "duplicated mapping key");
const err = frame.tag.addPair(frame.value, key, value);
if (err) throwError$1(state, err);
frame.overridable?.delete(key);
}
function addValue(state, value, tag) {
const frame = state.frames[state.frames.length - 1];
if (frame.kind === "document") {
frame.value = value;
frame.hasValue = true;
} else if (frame.kind === "sequence") {
if (isMappingTag(tag)) state.nodeTags.set(value, tag);
const err = frame.tag.addItem(frame.value, value, frame.index++);
if (err) throwError$1(state, err);
} else if (frame.hasKey) {
const key = frame.key;
frame.key = void 0;
frame.hasKey = false;
addMappingValue(state, frame, key, value, tag);
} else {
frame.key = value;
frame.keyPosition = state.position;
frame.hasKey = true;
frame.keyIsMerge = tag.tagName === MERGE_TAG_NAME;
}
}
function storeAnchor(state, event, value, tag, isValueFinal) {
if (event.anchorStart !== NO_RANGE$2) {
const anchor = {
value,
tag,
isValueFinal
};
state.anchors.set(state.source.slice(event.anchorStart, event.anchorEnd), anchor);
return anchor;
}
return null;
}
/**
* Constructs JavaScript documents directly from parser events, without an
* intermediate AST.
*
* @category Events
*/
function constructFromEvents(events, options) {
const state = {
...DEFAULT_CONSTRUCTOR_OPTIONS,
...options,
events,
documents: [],
eventIndex: 0,
position: 0,
frames: [],
anchors: /* @__PURE__ */ new Map(),
nodeTags: /* @__PURE__ */ new Map(),
tagHandlers: Object.create(null),
totalMergeKeys: 0,
aliasCount: 0
};
while (state.eventIndex < state.events.length) {
const event = state.events[state.eventIndex++];
state.position = eventPosition$1(event);
switch (event.type) {
case EVENT_ID.DOCUMENT:
state.anchors = /* @__PURE__ */ new Map();
state.nodeTags = /* @__PURE__ */ new Map();
state.aliasCount = 0;
state.tagHandlers = Object.create(null);
for (const directive of event.directives) if (directive.kind === "tag") state.tagHandlers[directive.handle] = directive.prefix;
state.frames.push({
kind: "document",
position: state.position,
value: void 0,
hasValue: false
});
break;
case EVENT_ID.SCALAR: {
const { value, tag } = constructScalar(state, event);
storeAnchor(state, event, value, tag, true);
addValue(state, value, tag);
break;
}
case EVENT_ID.SEQUENCE: {
const tagName = collectionTagName(state, event, "tag:yaml.org,2002:seq");
const tag = state.schema.lookupSequenceTag(tagName);
if (!tag) throwError$1(state, `unknown sequence tag !<${tagName}>`);
const value = tag.create(tagName);
const anchor = storeAnchor(state, event, value, tag, tag.carrierIsResult);
state.frames.push({
kind: "sequence",
position: state.position,
value,
tag,
anchor,
index: 0
});
break;
}
case EVENT_ID.MAPPING: {
const tagName = collectionTagName(state, event, "tag:yaml.org,2002:map");
const tag = state.schema.lookupMappingTag(tagName);
if (!tag) throwError$1(state, `unknown mapping tag !<${tagName}>`);
const value = tag.create(tagName);
const anchor = storeAnchor(state, event, value, tag, tag.carrierIsResult);
state.frames.push({
kind: "mapping",
position: state.position,
value,
tag,
anchor,
key: void 0,
keyPosition: state.position,
hasKey: false,
keyIsMerge: false,
overridable: null
});
break;
}
case EVENT_ID.ALIAS: {
if (state.maxAliases !== -1 && ++state.aliasCount > state.maxAliases) throwError$1(state, `aliases exceeded maxAliases (${state.maxAliases})`);
const name = state.source.slice(event.anchorStart, event.anchorEnd);
const anchor = state.anchors.get(name);
if (!anchor) throwError$1(state, `unidentified alias "${name}"`);
if (!anchor.isValueFinal) throwError$1(state, `recursive alias "${name}" is not supported for tag ${anchor.tag.tagName} because it uses finalize()`);
addValue(state, anchor.value, anchor.tag);
break;
}
case EVENT_ID.POP: {
const frame = state.frames.pop();
if (frame.kind === "mapping" && frame.hasKey) {
state.position = frame.keyPosition;
throwError$1(state, "incomplete mapping pair in event stream");
}
if (frame.kind === "document") state.documents.push(frame.value);
else {
const value = frame.tag.carrierIsResult ? frame.value : finalizeCollection(state, frame.position, frame.tag, frame.value);
if (frame.anchor) {
frame.anchor.value = value;
frame.anchor.isValueFinal = true;
}
addValue(state, value, frame.tag);
}
break;
}
}
}
return state.documents;
}
//#endregion
//#region src/parser/parser.ts
var NO_RANGE$1 = -1;
var HAS_OWN = Object.prototype.hasOwnProperty;
var CONTEXT_FLOW_IN = 1;
var CONTEXT_FLOW_OUT = 2;
var CONTEXT_BLOCK_IN = 3;
var CONTEXT_BLOCK_OUT = 4;
var PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
var PATTERN_FLOW_INDICATORS = /[,\[\]{}]/;
var PATTERN_TAG_HANDLE = /^(?:!|!!|![0-9A-Za-z-]+!)$/;
var NS_URI_CHAR = String.raw`(?:%[0-9A-Fa-f]{2}|[0-9A-Za-z\-#;/?:@&=+$,_.!~*'()\[\]])`;
var NS_TAG_CHAR = String.raw`(?:%[0-9A-Fa-f]{2}|[0-9A-Za-z\-#;/?:@&=+$.~*'()_])`;
var PATTERN_TAG_URI = new RegExp(`^(?:${NS_URI_CHAR})*$`);
var PATTERN_TAG_SUFFIX = new RegExp(`^(?:${NS_TAG_CHAR})+$`);
var PATTERN_TAG_PREFIX = new RegExp(`^(?:!(?:${NS_URI_CHAR})*|${NS_TAG_CHAR}(?:${NS_URI_CHAR})*)$`);
var DEFAULT_PARSER_OPTIONS = {
filename: "",
maxDepth: 100
};
function addDocumentEvent(state, explicitStart, explicitEnd) {
state.events.push({
type: EVENT_ID.DOCUMENT,
explicitStart,
explicitEnd,
directives: state.directives
});
}
function addSequenceEvent(state, start, anchorStart, anchorEnd, tagStart, tagEnd, style) {
state.events.push({
type: EVENT_ID.SEQUENCE,
start,
anchorStart,
anchorEnd,
tagStart,
tagEnd,
style
});
}
function addMappingEvent(state, start, anchorStart, anchorEnd, tagStart, tagEnd, style) {
state.events.push({
type: EVENT_ID.MAPPING,
start,
anchorStart,
anchorEnd,
tagStart,
tagEnd,
style
});
}
function insertFlowPairMappingEvent(state, snapshot) {
state.events.splice(snapshot.eventsLength, 0, {
type: EVENT_ID.MAPPING,
start: snapshot.position,
anchorStart: NO_RANGE$1,
anchorEnd: NO_RANGE$1,
tagStart: NO_RANGE$1,
tagEnd: NO_RANGE$1,
style: COLLECTION_STYLE.FLOW
});
}
function addScalarEvent(state, valueStart, valueEnd, anchorStart, anchorEnd, tagStart, tagEnd, style, chomping = CHOMPING_MODE.CLIP, indent = -1, fast = false) {
state.events.push({
type: EVENT_ID.SCALAR,
valueStart,
valueEnd,
anchorStart,
anchorEnd,
tagStart,
tagEnd,
style,
chomping,
indent,
fast
});
}
function addAliasEvent(state, anchorStart, anchorEnd) {
state.events.push({
type: EVENT_ID.ALIAS,
anchorStart,
anchorEnd
});
}
function addPopEvent(state) {
state.events.push({ type: EVENT_ID.POP });
}
function addEmptyScalarEvent(state) {
addScalarEvent(state, NO_RANGE$1, NO_RANGE$1, NO_RANGE$1, NO_RANGE$1, NO_RANGE$1, NO_RANGE$1, SCALAR_STYLE.PLAIN);
}
function emptyProperties() {
return {
anchorStart: NO_RANGE$1,
anchorEnd: NO_RANGE$1,
tagStart: NO_RANGE$1,
tagEnd: NO_RANGE$1
};
}
function snapshotState(state) {
return {
position: state.position,
line: state.line,
lineStart: state.lineStart,
lineIndent: state.lineIndent,
firstTabInLine: state.firstTabInLine,
eventsLength: state.events.length
};
}
function restoreState(state, snapshot) {
state.position = snapshot.position;
state.line = snapshot.line;
state.lineStart = snapshot.lineStart;
state.lineIndent = snapshot.lineIndent;
state.firstTabInLine = snapshot.firstTabInLine;
state.events.length = snapshot.eventsLength;
}
function throwError(state, message) {
YAMLException.throwAt(state.input.slice(0, state.length), state.position, message, state.filename);
}
function isEol(c) {
return c === 10 || c === 13;
}
function isWhiteSpace(c) {
return c === 9 || c === 32;
}
function isWsOrEol(c) {
return isWhiteSpace(c) || isEol(c);
}
function isWsOrEolOrEnd(c) {
return c === 0 || isWsOrEol(c);
}
function isFlowIndicator(c) {
return c === 44 || c === 91 || c === 93 || c === 123 || c === 125;
}
function fromDecimalCode(c) {
return c >= 48 && c <= 57 ? c - 48 : -1;
}
function fromHexCode(c) {
if (c >= 48 && c <= 57) return c - 48;
const lc = c | 32;
if (lc >= 97 && lc <= 102) return lc - 97 + 10;
return -1;
}
function escapedHexLen(c) {
if (c === 120) return 2;
if (c === 117) return 4;
if (c === 85) return 8;
return 0;
}
function isSimpleEscape(c) {
return c === 48 || c === 97 || c === 98 || c === 116 || c === 9 || c === 110 || c === 118 || c === 102 || c === 114 || c === 101 || c === 32 || c === 34 || c === 47 || c === 92 || c === 78 || c === 95 || c === 76 || c === 80;
}
function consumeLineBreak(state) {
if (state.input.charCodeAt(state.position) === 10) state.position++;
else {
state.position++;
if (state.input.charCodeAt(state.position) === 10) state.position++;
}
state.line++;
state.lineStart = state.position;
state.lineIndent = 0;
state.firstTabInLine = -1;
}
function skipSeparationSpace(state, allowComments) {
let lineBreaks = 0;
let ch = state.input.charCodeAt(state.position);
let hasSeparation = state.position === state.lineStart || isWsOrEol(state.input.charCodeAt(state.position - 1));
while (ch !== 0) {
while (isWhiteSpace(ch)) {
hasSeparation = true;
if (ch === 9 && state.firstTabInLine === -1) state.firstTabInLine = state.position;
ch = state.input.charCodeAt(++state.position);
}
if (allowComments && hasSeparation && ch === 35) do
ch = state.input.charCodeAt(++state.position);
while (!isEol(ch) && ch !== 0);
if (!isEol(ch)) break;
consumeLineBreak(state);
lineBreaks++;
hasSeparation = true;
ch = state.input.charCodeAt(state.position);
while (ch === 32) {
state.lineIndent++;
ch = state.input.charCodeAt(++state.position);
}
}
return lineBreaks;
}
function testDocumentSeparator(state, position = state.position) {
const ch = state.input.charCodeAt(position);
if ((ch === 45 || ch === 46) && ch === state.input.charCodeAt(position + 1) && ch === state.input.charCodeAt(position + 2)) {
const following = state.input.charCodeAt(position + 3);
return following === 0 || isWsOrEol(following);
}
return false;
}
function skipByteOrderMark(state) {
if (state.position === state.lineStart && state.input.charCodeAt(state.position) === 65279) {
state.position++;
state.lineStart = state.position;
}
}
function testDocumentBoundary(state) {
if (state.position !== state.lineStart) return false;
if (testDocumentSeparator(state)) return true;
if (state.input.charCodeAt(state.position) !== 65279) return false;
const snapshot = snapshotState(state);
skipByteOrderMark(state);
skipSeparationSpace(state, true);
const ch = state.input.charCodeAt(state.position);
const result = state.position === state.lineStart && (ch === 37 || ch === 45 && testDocumentSeparator(state));
restoreState(state, snapshot);
return result;
}
function skipUntilLineEnd(state) {
let ch = state.input.charCodeAt(state.position);
while (ch !== 0 && !isEol(ch)) ch = state.input.charCodeAt(++state.position);
}
function checkPrintable(state, start, end) {
if (PATTERN_NON_PRINTABLE.test(state.input.slice(start, end))) throwError(state, "the stream contains non-printable characters");
}
function readTagProperty(state, props, inFlow) {
if (state.input.charCodeAt(state.position) !== 33) return false;
if (props.tagStart !== NO_RANGE$1) throwError(state, "duplication of a tag property");
const start = state.position;
let isVerbatim = false;
let isNamed = false;
let tagHandle = "!";
let ch = state.input.charCodeAt(++state.position);
if (ch === 60) {
isVerbatim = true;
ch = state.input.charCodeAt(++state.position);
} else if (ch === 33) {
isNamed = true;
tagHandle = "!!";
ch = state.input.charCodeAt(++state.position);
}
let suffixStart = state.position;
let tagName;
if (isVerbatim) {
while (ch !== 0 && ch !== 62) ch = state.input.charCodeAt(++state.position);
if (ch !== 62) throwError(state, "unexpected end of the stream within a verbatim tag");
tagName = state.input.slice(suffixStart, state.position);
state.position++;
} else {
while (ch !== 0 && !isWsOrEol(ch) && !(inFlow && isFlowIndicator(ch))) {
if (ch === 33) if (!isNamed) {
tagHandle = state.input.slice(suffixStart - 1, state.position + 1);
if (!PATTERN_TAG_HANDLE.test(tagHandle)) throwError(state, "named tag handle cannot contain such characters");
isNamed = true;
suffixStart = state.position + 1;
} else throwError(state, "tag suffix cannot contain exclamation marks");
ch = state.input.charCodeAt(++state.position);
}
tagName = state.input.slice(suffixStart, state.position);
if (PATTERN_FLOW_INDICATORS.test(tagName)) throwError(state, "tag suffix cannot contain flow indicator characters");
}
if (tagName && !(isVerbatim ? PATTERN_TAG_URI.test(tagName) : PATTERN_TAG_SUFFIX.test(tagName))) throwError(state, `tag name cannot contain such characters: ${tagName}`);
if (!isVerbatim && tagHandle !== "!" && tagHandle !== "!!" && !HAS_OWN.call(state.tagHandlers, tagHandle)) throwError(state, `undeclared tag handle "${tagHandle}"`);
props.tagStart = start;
props.tagEnd = state.position;
return true;
}
function readAnchorProperty(state, props) {
if (state.input.charCodeAt(state.position) !== 38) return false;
if (props.anchorStart !== NO_RANGE$1) throwError(state, "duplication of an anchor property");
state.position++;
const start = state.position;
while (state.input.charCodeAt(state.position) !== 0 && !isWsOrEol(state.input.charCodeAt(state.position)) && !isFlowIndicator(state.input.charCodeAt(state.position))) state.position++;
if (state.position === start) throwError(state, "name of an anchor node must contain at least one character");
props.anchorStart = start;
props.anchorEnd = state.position;
return true;
}
function readAlias(state, props) {
if (state.input.charCodeAt(state.position) !== 42) return false;
if (props.anchorStart !== NO_RANGE$1 || props.tagStart !== NO_RANGE$1) throwError(state, "alias node should not have any properties");
state.position++;
const start = state.position;
while (state.input.charCodeAt(state.position) !== 0 && !isWsOrEol(state.input.charCodeAt(state.position)) && !isFlowIndicator(state.input.charCodeAt(state.position))) state.position++;
if (state.position === start) throwError(state, "name of an alias node must contain at least one character");
addAliasEvent(state, start, state.position);
return true;
}
function readFlowScalarBreak(state, nodeIndent) {
skipSeparationSpace(state, false);
if (state.lineIndent < nodeIndent) throwError(state, "deficient indentation");
}
function readSingleQuotedScalar(state, nodeIndent, props) {
if (state.input.charCodeAt(state.position) !== 39) return false;
state.position++;
const start = state.position;
let simple = true;
while (state.input.charCodeAt(state.position) !== 0) {
const ch = state.input.charCodeAt(state.position);
if (ch === 39) {
if (state.input.charCodeAt(state.position + 1) === 39) {
simple = false;
state.position += 2;
continue;
}
const end = state.position;
state.position++;
addScalarEvent(state, start, end, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, SCALAR_STYLE.SINGLE_QUOTED, CHOMPING_MODE.CLIP, -1, simple);
return true;
}
if (isEol(ch)) {
simple = false;
readFlowScalarBreak(state, nodeIndent);
} else if (state.position === state.lineStart && testDocumentSeparator(state)) throwError(state, "unexpected end of the document within a single quoted scalar");
else if (ch !== 9 && ch < 32) throwError(state, "expected valid JSON character");
else state.position++;
}
throwError(state, "unexpected end of the stream within a single quoted scalar");
}
function readDoubleQuotedScalar(state, nodeIndent, props) {
if (state.input.charCodeAt(state.position) !== 34) return false;
state.position++;
const start = state.position;
let simple = true;
while (state.input.charCodeAt(state.position) !== 0) {
const ch = state.input.charCodeAt(state.position);
if (ch === 34) {
const end = state.position;
state.position++;
addScalarEvent(state, start, end, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, SCALAR_STYLE.DOUBLE_QUOTED, CHOMPING_MODE.CLIP, -1, simple);
return true;
}
if (ch === 92) {
simple = false;
const escaped = state.input.charCodeAt(++state.position);
if (isEol(escaped)) readFlowScalarBreak(state, nodeIndent);
else if (isSimpleEscape(escaped)) state.position++;
else {
let hexLength = escapedHexLen(escaped);
if (hexLength === 0) throwError(state, "unknown escape sequence");
while (hexLength-- > 0) {
state.position++;
if (fromHexCode(state.input.charCodeAt(state.position)) < 0) throwError(state, "expected hexadecimal character");
}
state.position++;
}
} else if (isEol(ch)) {
simple = false;
readFlowScalarBreak(state, nodeIndent);
} else if (state.position === state.lineStart && testDocumentSeparator(state)) throwError(state, "unexpected end of the document within a double quoted scalar");
else if (ch !== 9 && ch < 32) throwError(state, "expected valid JSON character");
else state.position++;
}
throwError(state, "unexpected end of the stream within a double quoted scalar");
}
function readBlockScalar(state, parentIndent, props) {
const ch = state.input.charCodeAt(state.position);
let chomping = CHOMPING_MODE.CLIP;
let indent = -1;
let detectedIndent = false;
if (ch !== 124 && ch !== 62) return false;
const style = ch === 124 ? SCALAR_STYLE.LITERAL_BLOCK : SCALAR_STYLE.FOLDED_BLOCK;
state.position++;
while (state.input.charCodeAt(state.position) !== 0) {
const current = state.input.charCodeAt(state.position);
const digit = fromDecimalCode(current);
if (current === 43 || current === 45) {
if (chomping !== CHOMPING_MODE.CLIP) throwError(state, "repeat of a chomping mode identifier");
chomping = current === 43 ? CHOMPING_MODE.KEEP : CHOMPING_MODE.STRIP;
state.position++;
} else if (digit >= 0) {
if (digit === 0) throwError(state, "bad explicit indentation width of a block scalar; it cannot be less than one");
if (detectedIndent) throwError(state, "repeat of an indentation width identifier");
indent = parentIndent + digit - 1;
detectedIndent = true;
state.position++;
} else break;
}
let hadWhitespace = false;
while (isWhiteSpace(state.input.charCodeAt(state.position))) {
hadWhitespace = true;
state.position++;
}
if (hadWhitespace && state.input.charCodeAt(state.position) === 35) skipUntilLineEnd(state);
if (isEol(state.input.charCodeAt(state.position))) consumeLineBreak(state);
else if (state.input.charCodeAt(state.position) !== 0) throwError(state, "a line break is expected");
let contentIndent = detectedIndent ? indent : -1;
let maxLeadingIndent = 0;
const valueStart = state.position;
let valueEnd = state.position;
while (state.input.charCodeAt(state.position) !== 0) {
const linePosition = state.position;
let column = 0;
while (state.input.charCodeAt(linePosition + column) === 32) column++;
const first = state.input.charCodeAt(linePosition + column);
if (first === 0) {
if (contentIndent >= 0) {
if (column > contentIndent) valueEnd = linePosition + column;
} else if (column > 0) valueEnd = linePosition + column;
break;
}
if (testDocumentBoundary(state)) break;
if (!detectedIndent && contentIndent === -1 && isEol(first)) maxLeadingIndent = Math.max(maxLeadingIndent, column);
if (!detectedIndent && contentIndent === -1 && !isEol(first)) {
if (first === 9 && column < parentIndent) {
state.position = linePosition + column;
throwError(state, "tab characters must not be used in indentation");
}
if (column < maxLeadingIndent) {
state.position = linePosition + column;
throwError(state, "bad indentation of a mapping entry");
}
}
if (contentIndent === -1 && first !== 0 && !isEol(first) && column < parentIndent) {
state.lineIndent = column;
state.position = linePosition + column;
break;
}
if (!detectedIndent && first !== 0 && !isEol(first) && contentIndent === -1) contentIndent = column;
const requiredIndent = contentIndent === -1 ? parentIndent + 1 : contentIndent;
if (first !== 0 && !isEol(first) && column < requiredIndent) {
state.lineIndent = column;
state.position = linePosition + column;
break;
}
skipUntilLineEnd(state);
valueEnd = state.position;
if (isEol(state.input.charCodeAt(state.position))) {
consumeLineBreak(state);
valueEnd = state.position;
}
}
checkPrintable(state, valueStart, valueEnd);
addScalarEvent(state, valueStart, valueEnd, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, style, chomping, contentIndent);
return true;
}
function canStartPlainScalar(state, nodeContext) {
const ch = state.input.charCodeAt(state.position);
const inFlow = nodeContext === CONTEXT_FLOW_IN;
if (ch === 0 || isWsOrEol(ch) || ch === 35 || ch === 38 || ch === 42 || ch === 33 || ch === 124 || ch === 62 || ch === 39 || ch === 34 || ch === 37 || ch === 64 || ch === 96 || inFlow && isFlowIndicator(ch)) return false;
if (ch === 63 || ch === 45) {
const following = state.input.charCodeAt(state.position + 1);
if (isWsOrEolOrEnd(following) || inFlow && isFlowIndicator(following)) return false;
}
return true;
}
function readPlainScalar(state, nodeIndent, nodeContext, props) {
if (!canStartPlainScalar(state, nodeContext)) return false;
const start = state.position;
let end = state.position;
let ch = state.input.charCodeAt(state.position);
const inFlow = nodeContext === CONTEXT_FLOW_IN;
let multiline = false;
while (ch !== 0) {
if (testDocumentBoundary(state)) break;
if (ch === 58) {
const following = state.input.charCodeAt(state.position + 1);
if (isWsOrEolOrEnd(following) || inFlow && isFlowIndicator(following)) break;
} else if (ch === 35) {
if (isWsOrEol(state.input.charCodeAt(state.position - 1))) break;
} else if (inFlow && isFlowIndicator(ch)) break;
else if (isEol(ch)) {
const savedPosition = state.position;
const savedLine = state.line;
const savedLineStart = state.lineStart;
const savedLineIndent = state.lineIndent;
skipSeparationSpace(state, false);
if (state.lineIndent >= nodeIndent) {
multiline = true;
ch = state.input.charCodeAt(state.position);
continue;
}
state.position = savedPosition;
state.line = savedLine;
state.lineStart = savedLineStart;
state.lineIndent = savedLineIndent;
break;
}
if (!isWhiteSpace(ch)) end = state.position + 1;
ch = state.input.charCodeAt(++state.position);
}
if (end === start) return false;
checkPrintable(state, start, end);
addScalarEvent(state, start, end, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, SCALAR_STYLE.PLAIN, CHOMPING_MODE.CLIP, -1, !multiline);
return true;
}
function skipFlowSeparationSpace(state, nodeIndent) {
const startLine = state.line;
skipSeparationSpace(state, true);
if (state.line > startLine && state.lineIndent < nodeIndent || state.firstTabInLine !== -1 && state.lineIndent < nodeIndent) throwError(state, "deficient indentation");
}
function readFlowCollection(state, nodeIndent, props) {
const ch = state.input.charCodeAt(state.position);
const isMapping = ch === 123;
const start = state.position;
let readNext = true;
if (ch !== 91 && ch !== 123) return false;
const terminator = isMapping ? 125 : 93;
if (isMapping) addMappingEvent(state, start, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, COLLECTION_STYLE.FLOW);
else addSequenceEvent(state, start, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, COLLECTION_STYLE.FLOW);
state.position++;
while (state.input.charCodeAt(state.position) !== 0) {
skipFlowSeparationSpace(state, nodeIndent);
let ch = state.input.charCodeAt(state.position);
if (ch === terminator) {
state.position++;
addPopEvent(state);
return true;
} else if (!readNext) throwError(state, "missed comma between flow collection entries");
else if (ch === 44) throwError(state, "expected the node content, but found ','");
let isPair = false;
let isExplicitPair = false;
if (ch === 63 && isWsOrEol(state.input.charCodeAt(state.position + 1))) {
isPair = isExplicitPair = true;
state.position += 1;
skipFlowSeparationSpace(state, nodeIndent);
}
const entryLine = state.line;
const entryStart = snapshotState(state);
const keyWasRead = parseNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
skipFlowSeparationSpace(state, nodeIndent);
ch = state.input.charCodeAt(state.position);
if ((isMapping || isExplicitPair || state.line === entryLine) && ch === 58) {
isPair = true;
state.position++;
skipFlowSeparationSpace(state, nodeIndent);
if (!isMapping) {
insertFlowPairMappingEvent(state, entryStart);
if (!keyWasRead) addEmptyScalarEvent(state);
} else if (!keyWasRead) addEmptyScalarEvent(state);
if (!parseNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true)) addEmptyScalarEvent(state);
skipFlowSeparationSpace(state, nodeIndent);
if (!isMapping) addPopEvent(state);
} else if (isMapping && isPair) {
if (!keyWasRead) addEmptyScalarEvent(state);
addEmptyScalarEvent(state);
} else if (isMapping) addEmptyScalarEvent(state);
else if (isPair) {
insertFlowPairMappingEvent(state, entryStart);
if (!keyWasRead) addEmptyScalarEvent(state);
addEmptyScalarEvent(state);
addPopEvent(state);
}
ch = state.input.charCodeAt(state.position);
if (ch === 44) {
readNext = true;
state.position++;
} else readNext = false;
}
throwError(state, "unexpected end of the stream within a flow collection");
}
function readBlockSequence(state, nodeIndent, props) {
if (state.firstTabInLine !== -1 || state.input.charCodeAt(state.position) !== 45 || !isWsOrEolOrEnd(state.input.charCodeAt(state.position + 1))) return false;
addSequenceEvent(state, state.position, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, COLLECTION_STYLE.BLOCK);
while (state.input.charCodeAt(state.position) === 45 && isWsOrEolOrEnd(state.input.charCodeAt(state.position + 1))) {
if (state.firstTabInLine !== -1) {
state.position = state.firstTabInLine;
throwError(state, "tab characters must not be used in indentation");
}
const entryLine = state.line;
state.position++;
const hadBreak = skipSeparationSpace(state, true) > 0;
if (state.firstTabInLine !== -1 && state.input.charCodeAt(state.position) === 45 && isWsOrEolOrEnd(state.input.charCodeAt(state.position + 1))) throwError(state, "bad indentation of a sequence entry");
if (hadBreak && state.lineIndent <= nodeIndent) addEmptyScalarEvent(state);
else parseNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
skipSeparationSpace(state, true);
if (state.lineIndent < nodeIndent || state.position >= state.length) break;
if (state.lineIndent > nodeIndent) throwError(state, "bad indentation of a sequence entry");
if (state.line === entryLine && state.input.charCodeAt(state.position) === 45 && isWsOrEolOrEnd(state.input.charCodeAt(state.position + 1))) throwError(state, "bad indentation of a sequence entry");
}
addPopEvent(state);
return true;
}
function readBlockMapping(state, nodeIndent, flowIndent, props) {
let atExplicitKey = false;
let detected = false;
let mappingOpened = false;
let pendingExplicitKey = false;
if (state.firstTabInLine !== -1) return false;
let ch = state.input.charCodeAt(state.position);
while (ch !== 0) {
if (!atExplicitKey && state.firstTabInLine !== -1) {
state.position = state.firstTabInLine;
throwError(state, "tab characters must not be used in indentation");
}
const following = state.input.charCodeAt(state.position + 1);
const entryLine = state.line;
if ((ch === 63 || ch === 58) && isWsOrEolOrEnd(following)) {
if (!mappingOpened) {
addMappingEvent(state, state.position, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, COLLECTION_STYLE.BLOCK);
mappingOpened = true;
}
if (ch === 63) {
if (atExplicitKey) addEmptyScalarEvent(state);
detected = true;
atExplicitKey = true;
} else if (atExplicitKey) atExplicitKey = false;
else {
addEmptyScalarEvent(state);
detected = true;
atExplicitKey = false;
}
state.position += 1;
pendingExplicitKey = true;
} else {
if (atExplicitKey) {
addEmptyScalarEvent(state);
atExplicitKey = false;
}
const beforeKey = snapshotState(state);
if (!parseNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) break;
if (state.line === entryLine) {
ch = state.input.charCodeAt(state.position);
while (isWhiteSpace(ch)) ch = state.input.charCodeAt(++state.position);
if (ch === 58) {
ch = state.input.charCodeAt(++state.position);
if (!isWsOrEolOrEnd(ch)) throwError(state, "a whitespace character is expected after the key-value separator within a block mapping");
if (!mappingOpened) {
restoreState(state, beforeKey);
addMappingEvent(state, beforeKey.position, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, COLLECTION_STYLE.BLOCK);
mappingOpened = true;
parseNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true);
ch = state.input.charCodeAt(state.position);
while (isWhiteSpace(ch)) ch = state.input.charCodeAt(++state.position);
state.position++;
}
detected = true;
atExplicitKey = false;
pendingExplicitKey = false;
} else if (detected) throwError(state, "expected ':' after a mapping key");
else {
if (props.anchorStart !== NO_RANGE$1 || props.tagStart !== NO_RANGE$1) {
restoreState(state, beforeKey);
return false;
}
return true;
}
} else if (detected) throwError(state, "can not read a block mapping entry; a multiline key may not be an implicit key");
else {
if (props.anchorStart !== NO_RANGE$1 || props.tagStart !== NO_RANGE$1) {
restoreState(state, beforeKey);
return false;
}
return true;
}
}
if (parseNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, pendingExplicitKey)) pendingExplicitKey = false;
if (!atExplicitKey) {
if (pendingExplicitKey) {
addEmptyScalarEvent(state);
pendingExplicitKey = false;
}
}
skipSeparationSpace(state, true);
ch = state.input.charCodeAt(state.position);
if ((state.line === entryLine || state.lineIndent > nodeIndent) && ch !== 0) throwError(state, "bad indentation of a mapping entry");
else if (state.lineIndent < nodeIndent) break;
}
if (!detected) return false;
if (atExplicitKey) addEmptyScalarEvent(state);
if (mappingOpened) addPopEvent(state);
return true;
}
function parseNode(state, parentIndent, nodeContext, allowToSeek, allowCompact, allowPropertyMapping = true) {
if (state.depth >= state.maxDepth) throwError(state, `nesting exceeded maxDepth (${state.maxDepth})`);
state.depth++;
let indentStatus = 1;
let atNewLine = false;
let hasContent = false;
let propertyStart = null;
const props = emptyProperties();
let allowBlockScalars = nodeContext === CONTEXT_BLOCK_OUT || nodeContext === CONTEXT_BLOCK_IN;
let allowBlockCollections = allowBlockScalars;
const allowBlockStyles = allowBlockScalars;
if (allowToSeek && skipSeparationSpace(state, true)) {
atNewLine = true;
if (state.lineIndent > parentIndent) indentStatus = 1;
else if (state.lineIndent === parentIndent) indentStatus = 0;
else indentStatus = -1;
}
if (indentStatus === 1) while (true) {
const ch = state.input.charCodeAt(state.position);
const propertyState = snapshotState(state);
if (atNewLine && indentStatus !== 1 && (ch === 33 || ch === 38)) break;
if (atNewLine && allowBlockStyles && (props.tagStart !== NO_RANGE$1 || props.anchorStart !== NO_RANGE$1) && (ch === 33 || ch === 38)) {
const fallbackState = snapshotState(state);
const flowIndent = parentIndent + 1;
if (readBlockMapping(state, state.position - state.lineStart, flowIndent, props) && state.events[fallbackState.eventsLength]?.type === EVENT_ID.MAPPING) {
state.depth--;
return true;
}
restoreState(state, fallbackState);
}
if (atNewLine && (ch === 33 && props.tagStart !== NO_RANGE$1 || ch === 38 && props.anchorStart !== NO_RANGE$1)) break;
if (!readTagProperty(state, props, nodeContext === CONTEXT_FLOW_IN) && !readAnchorProperty(state, props)) break;
if (propertyStart === null) propertyStart = propertyState;
if (skipSeparationSpace(state, true)) {
atNewLine = true;
allowBlockCollections = allowBlockStyles;
if (state.lineIndent > parentIndent) indentStatus = 1;
else if (state.lineIndent === parentIndent) indentStatus = 0;
else indentStatus = -1;
} else allowBlockCollections = false;
}
if (allowBlockCollections) allowBlockCollections = atNewLine || allowCompact;
if (indentStatus === 1 || nodeContext === CONTEXT_BLOCK_OUT) {
const flowIndent = nodeContext === CONTEXT_FLOW_IN || nodeContext === CONTEXT_FLOW_OUT ? parentIndent : parentIndent + 1;
const blockIndent = state.position - state.lineStart;
if (indentStatus === 1) if (allowBlockCollections && (readBlockSequence(state, blockIndent, props) || readBlockMapping(state, blockIndent, flowIndent, props)) || readFlowCollection(state, flowIndent, props)) hasContent = true;
else {
const ch = state.input.charCodeAt(state.position);
if (propertyStart !== null && allowPropertyMapping && allowBlockStyles && !allowBlockCollections && ch !== 124 && ch !== 62) {
const fallbackState = snapshotState(state);
const propertyIndent = propertyStart.position - propertyStart.lineStart;
restoreState(state, propertyStart);
if (readBlockMapping(state, propertyIndent, flowIndent, emptyProperties()) && state.events[fallbackState.eventsLength]?.type === EVENT_ID.MAPPING) hasContent = true;
else restoreState(state, fallbackState);
}
if (!hasContent && (allowBlockScalars && readBlockScalar(state, flowIndent, props) || readSingleQuotedScalar(state, flowIndent, props) || readDoubleQuotedScalar(state, flowIndent, props) || readAlias(state, props) || readPlainScalar(state, flowIndent, nodeContext, props))) hasContent = true;
}
else if (indentStatus === 0) hasContent = allowBlockCollections && readBlockSequence(state, blockIndent, props);
}
allowBlockScalars = allowBlockScalars && !hasContent;
if (!hasContent && (props.anchorStart !== NO_RANGE$1 || props.tagStart !== NO_RANGE$1 || allowBlockScalars)) {
addScalarEvent(state, NO_RANGE$1, NO_RANGE$1, props.anchorStart, props.anchorEnd, props.tagStart, props.tagEnd, SCALAR_STYLE.PLAIN);
hasContent = true;
}
state.depth--;
return hasContent || props.anchorStart !== NO_RANGE$1 || props.tagStart !== NO_RANGE$1;
}
function readDirective(state) {
if (state.lineIndent > 0 || state.input.charCodeAt(state.position) !== 37) return false;
state.position++;
const nameStart = state.position;
while (state.input.charCodeAt(state.position) !== 0 && !isWsOrEol(state.input.charCodeAt(state.position))) state.position++;
const name = state.input.slice(nameStart, state.position);
const args = [];
if (name.length === 0) throwError(state, "directive name must not be less than one character in length");
while (state.input.charCodeAt(state.position) !== 0 && !isEol(state.input.charCodeAt(state.position))) {
while (isWhiteSpace(state.input.charCodeAt(state.position))) state.position++;
if (state.input.charCodeAt(state.position) === 35 || isEol(state.input.charCodeAt(state.position)) || state.input.charCodeAt(state.position) === 0) break;
const start = state.position;
while (state.input.charCodeAt(state.position) !== 0 && !isWsOrEol(state.input.charCodeAt(state.position))) state.position++;
args.push(state.input.slice(start, state.position));
}
if (isEol(state.input.charCodeAt(state.position))) consumeLineBreak(state);
if (name === "YAML") {
if (state.directives.some((directive) => directive.kind === "yaml")) throwError(state, "duplication of %YAML directive");
if (args.length !== 1) throwError(state, "YAML directive accepts exactly one argument");
const match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
if (match === null) throwError(state, "ill-formed argument of the YAML directive");
if (parseInt(match[1], 10) !== 1) throwError(state, "unacceptable YAML version of the document");
state.directives.push({
kind: "yaml",
version: args[0]
});
} else if (name === "TAG") {
if (args.length !== 2) throwError(state, "TAG directive accepts exactly two arguments");
const [handle, prefix] = args;
if (!PATTERN_TAG_HANDLE.test(handle)) throwError(state, "ill-formed tag handle (first argument) of the TAG directive");
if (HAS_OWN.call(state.tagHandlers, handle)) throwError(state, `there is a previously declared suffix for "${handle}" tag handle`);
if (!PATTERN_TAG_PREFIX.test(prefix)) throwError(state, "ill-formed tag prefix (second argument) of the TAG directive");
state.tagHandlers[handle] = prefix;
state.directives.push({
kind: "tag",
handle,
prefix
});
}
return true;
}
function readDocument(state) {
state.directives = [];
state.tagHandlers = Object.create(null);
let hasDirectives = false;
skipSeparationSpace(state, true);
while (readDirective(state)) {
hasDirectives = true;
skipSeparationSpace(state, true);
}
let explicitStart = false;
let explicitEnd = false;
let allowCompact = true;
if (state.lineIndent === 0 && state.input.charCodeAt(state.position) === 45 && state.input.charCodeAt(state.position + 1) === 45 && state.input.charCodeAt(state.position + 2) === 45 && isWsOrEolOrEnd(state.input.charCodeAt(state.position + 3))) {
explicitStart = true;
const markerLine = state.line;
state.position += 3;
skipSeparationSpace(state, true);
allowCompact = state.line > markerLine;
} else if (hasDirectives) throwError(state, "directives end mark is expected");
const documentEventIndex = state.events.length;
if (!explicitStart && state.position === state.lineStart && state.input.charCodeAt(state.position) === 46 && testDocumentSeparator(state)) {
state.position += 3;
skipSeparationSpace(state, true);
return;
}
addDocumentEvent(state, explicitStart, false);
if (!parseNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, allowCompact, allowCompact)) addEmptyScalarEvent(state);
skipSeparationSpace(state, true);
if (state.position === state.lineStart && testDocumentSeparator(state)) {
explicitEnd = state.input.charCodeAt(state.position) === 46;
if (explicitEnd) {
const markerLine = state.line;
state.position += 3;
skipSeparationSpace(state, true);
if (state.line === markerLine && state.position < state.length) throwError(state, "end of the stream or a document separator is expected");
}
}
const documentEvent = state.events[documentEventIndex];
if (documentEvent?.type === EVENT_ID.DOCUMENT) documentEvent.explicitEnd = explicitEnd;
addPopEvent(state);
if (!explicitEnd && state.position < state.length && !testDocumentBoundary(state)) throwError(state, "end of the stream or a document separator is expected");
}
/**
* Parses YAML into a flat event stream referencing source text by offsets.
*
* @category Events
*/
function parseEvents(input, options) {
const length = input.length;
const state = {
...DEFAULT_PARSER_OPTIONS,
...options,
input: `${input}\0`,
length,
position: 0,
line: 0,
lineStart: 0,
lineIndent: 0,
firstTabInLine: -1,
depth: 0,
directives: [],
tagHandlers: Object.create(null),
events: []
};
const nullpos = input.indexOf("\0");
if (nullpos !== -1) YAMLException.throwAt(input, nullpos, "null byte is not allowed in input", state.filename);
while (state.position < state.length) {
skipByteOrderMark(state);
skipSeparationSpace(state, true);
if (state.position >= state.length) break;
const documentStart = state.position;
readDocument(state);
if (state.position === documentStart)
/* c8 ignore next */
throwError(state, "can not read a document");
}
return state.events;
}
//#endregion
//#region src/load.ts
var DEFAULT_LOAD_OPTIONS = {
...DEFAULT_PARSER_OPTIONS,
...DEFAULT_CONSTRUCTOR_OPTIONS
};
function loadDocuments(input, options = {}) {
const opts = {
...DEFAULT_LOAD_OPTIONS,
...options
};
const source = String(input);
const PARSER_OPT_KEYS = Object.keys(DEFAULT_PARSER_OPTIONS);
const CONSTRUCTOR_OPT_KEYS = Object.keys(DEFAULT_CONSTRUCTOR_OPTIONS);
return constructFromEvents(parseEvents(source, pick(opts, PARSER_OPT_KEYS)), {
...pick(opts, CONSTRUCTOR_OPT_KEYS),
source
});
}
function loadAll(input, iteratorOrOptions, options) {
let iterator = null;
if (typeof iteratorOrOptions === "function") iterator = iteratorOrOptions;
else if (iteratorOrOptions !== null && typeof iteratorOrOptions === "object") options = iteratorOrOptions;
const documents = loadDocuments(input, options);
if (iterator === null) return documents;
for (const document of documents) iterator(document);
}
/**
* Parses `string` as a single YAML document. Throws {@link YAMLException} on
* error. This function does not understand multi-document or empty sources; it
* throws an exception on those.
*
* > [!NOTE]
* > 1. When processing untrusted input, see the
* > [security considerations](../docs/safety.md).
* > 2. All exceptions MUST be caught, not just {@link YAMLException}.
* > 3. The default {@link CORE_SCHEMA} comes without the `!!merge` tag. You can
* > easily enable it if needed.
* > 4. The default {@link mapTag} is `{}`-object based, with known limitations
* > (see description). For full compatibility use {@link realMapTag}
* > instead (it uses native JS `Map`).
*
* @example
* Enable {@link mergeTag} and {@link realMapTag}:
*
* ```javascript
* import { load, CORE_SCHEMA, mergeTag, realMapTag } from 'js-yaml'
*
* try {
* load(data, { schema: CORE_SCHEMA.withTags(mergeTag, realMapTag) })
* } catch (e) {
* console.error(e)
* }
* ```
*
* @category Main
*/
function load(input, options) {
const documents = loadDocuments(input, options);
if (documents.length === 0) throw new YAMLException("expected a document, but the input is empty");
if (documents.length === 1) return documents[0];
throw new YAMLException("expected a single document in the stream, but found more");
}
//#endregion
//#region src/ast/from_js.ts
var INVALID = Symbol("INVALID");
function buildRepresentTypes(schema) {
const defaultTags = new Set([
schema.defaultScalarTag,
schema.defaultSequenceTag,
schema.defaultMappingTag
].filter((t) => t !== void 0));
const implicitScalars = schema.implicitScalarTags;
const explicitTags = schema.tags.filter((t) => !(t.nodeKind === "scalar" && t.implicit) && !defaultTags.has(t));
const defaultTagsLast = schema.tags.filter((t) => defaultTags.has(t));
return [
...implicitScalars.map((tag) => ({
tag,
implicitTag: true
})),
...explicitTags.map((tag) => ({
tag,
implicitTag: false
})),
...defaultTagsLast.map((tag) => ({
tag,
implicitTag: true
}))
];
}
function matchTag(state, object) {
for (let index = 0, length = state.representTypes.length; index < length; index += 1) {
const { tag, implicitTag } = state.representTypes[index];
if (tag.identify(object)) {
let tagName;
if (tag.matchByTagPrefix) tagName = tag.representTagName(object);
else tagName = tag.tagName;
return {
tag,
tagName,
implicitTag
};
}
}
return null;
}
function build(state, object) {
if (!state.noRefs && object !== null && typeof object === "object") {
const existing = state.refs.get(object);
if (existing) {
if (existing.anchor === void 0) existing.anchor = `ref_${state.refCounter++}`;
return {
kind: "alias",
anchor: existing.anchor
};
}
}
const matched = matchTag(state, object);
if (!matched) {
if (object === void 0) return INVALID;
if (state.skipInvalid) return INVALID;
throw new YAMLException(`unacceptable kind of an object to dump ${Object.prototype.toString.call(object)}`);
}
const { tag, tagName, implicitTag } = matched;
const nodeTagName = implicitTag ? tagName : tagNameShort(tagName);
if (tag.nodeKind === "scalar") return {
kind: "scalar",
tag: nodeTagName,
tagged: !implicitTag,
style: SCALAR_STYLE.PLAIN,
value: tag.represent(object)
};
if (tag.nodeKind === "sequence") {
const container = tag.represent(object);
const node = {
kind: "sequence",
tag: nodeTagName,
tagged: !implicitTag,
style: COLLECTION_STYLE.BLOCK,
items: []
};
if (!state.noRefs) state.refs.set(object, node);
for (let index = 0, length = container.length; index < length; index += 1) {
let item = build(state, container[index]);
if (item === INVALID && container[index] === void 0) item = build(state, null);
if (item === INVALID) continue;
node.items.push(item);
}
return node;
}
const map = tag.represent(object);
const node = {
kind: "mapping",
tag: nodeTagName,
tagged: !implicitTag,
style: COLLECTION_STYLE.BLOCK,
items: []
};
if (!state.noRefs) state.refs.set(object, node);
for (const [objectKey, objectValue] of map) {
const key = build(state, objectKey);
if (key === INVALID) continue;
const value = build(state, objectValue);
if (value === INVALID) continue;
node.items.push({
key,
value
});
}
return node;
}
/**
* Convert JS object to AST. A JS value is one YAML document. An unrepresentable
* root becomes an empty document, which the presenter renders as an empty
* string.
*
* @category AST
*/
function jsToAst(input, schema, options = {}) {
const root = build({
representTypes: buildRepresentTypes(schema),
noRefs: options.noRefs ?? false,
skipInvalid: options.skipInvalid ?? false,
refs: /* @__PURE__ */ new Map(),
refCounter: 0
}, input);
return [{
contents: root === INVALID ? null : root,
directives: []
}];
}
//#endregion
//#region src/ast/visit.ts
/**
* Return from a visitor to stop the whole traversal.
*
* @category AST
*/
var VISIT_BREAK = Symbol("visit:break");
/**
* Return from a visitor to skip the current node's children.
*
* @category AST
*/
var VISIT_SKIP = Symbol("visit:skip");
function visitNode(node, visitor, ctx) {
const control = visitor(node, ctx);
if (control === VISIT_BREAK) return true;
if (control === VISIT_SKIP) return false;
const depth = ctx.depth + 1;
switch (node.kind) {
case "sequence":
for (const item of node.items) if (visitNode(item, visitor, {
depth,
parent: node,
isKey: false
})) return true;
break;
case "mapping":
for (const { key, value } of node.items) {
if (visitNode(key, visitor, {
depth,
parent: node,
isKey: true
})) return true;
if (visitNode(value, visitor, {
depth,
parent: node,
isKey: false
})) return true;
}
break;
}
return false;
}
/**
* Walk every node in the documents, calling {@link Visitor} once per
* node (pre-order).
*
* @category AST
*/
function visit(documents, visitor) {
for (const doc of documents) if (doc.contents && visitNode(doc.contents, visitor, {
depth: 0,
parent: null,
isKey: false
})) return;
}
//#endregion
//#region src/ast/styler_defaults.ts
function hasBit(mask, bit) {
return (mask & 1 << bit) !== 0;
}
/**
* Default scalar styling rules in application order.
* See [Scalar styling](../../docs/scalar_styling.md) for usage details.
*
* @category AST
*/
var DEFAULT_SCALAR_STYLE_RULES = {
applyQuoteFlowKeysOption,
doubleQuoteForInvisibles,
doubleQuoteWhitespaceOnly,
applyForceQuotesOption,
tryLongOrMultilineAsBlock,
quoteInvalidPlain,
fallbackToDoubleQuoted
};
function _preferredQuotedStyle(layout) {
if (layout.presenterOptions.quoteStyle === "single" && hasBit(layout.allowedStylesMask, SCALAR_STYLE.SINGLE_QUOTED)) return SCALAR_STYLE.SINGLE_QUOTED;
return SCALAR_STYLE.DOUBLE_QUOTED;
}
function applyQuoteFlowKeysOption(layout) {
if (!layout.presenterOptions.quoteFlowKeys) return;
if (!layout.isKey || !layout.flowOnly || layout.style !== SCALAR_STYLE.PLAIN) return;
layout.style = SCALAR_STYLE.DOUBLE_QUOTED;
}
function doubleQuoteForInvisibles(layout) {
if (layout.style === SCALAR_STYLE.PLAIN && /[\t\x7F-\xA0\u2028\u2029\uFEFF\uFFFE\uFFFF]/.test(layout.node.value)) layout.style = SCALAR_STYLE.DOUBLE_QUOTED;
}
function doubleQuoteWhitespaceOnly(layout) {
if (layout.style === SCALAR_STYLE.PLAIN && /^\s+$/.test(layout.node.value)) layout.style = SCALAR_STYLE.DOUBLE_QUOTED;
}
function applyForceQuotesOption(layout) {
if (!layout.presenterOptions.forceQuotes) return;
if (layout.isKey || layout.style !== SCALAR_STYLE.PLAIN) return;
layout.style = layout.node.value.includes("\n") ? SCALAR_STYLE.DOUBLE_QUOTED : _preferredQuotedStyle(layout);
}
function tryLongOrMultilineAsBlock(layout) {
if (layout.style !== SCALAR_STYLE.PLAIN || layout.isKey) return;
const value = layout.node.value;
const multiline = value.indexOf("\n") !== -1;
if (!hasBit(layout.allowedStylesMask, SCALAR_STYLE.LITERAL_BLOCK)) {
if (multiline) layout.style = SCALAR_STYLE.DOUBLE_QUOTED;
return;
}
const w = layout.presenterOptions.lineWidth;
if (w === -1) {
if (multiline) layout.style = SCALAR_STYLE.LITERAL_BLOCK;
return;
}
const availableWidth = Math.max(Math.min(w, 40), w - layout.shiftOfContent);
let position = 0;
let shouldFold = false;
while (position <= value.length) {
let lineEnd = value.length;
const nextLineBreak = value.indexOf("\n", position);
if (nextLineBreak !== -1) lineEnd = nextLineBreak;
const line = value.slice(position, lineEnd);
if (line.length > availableWidth && line[0] !== " " && / [^ \t]/.test(line)) shouldFold = true;
if (nextLineBreak === -1) break;
position = nextLineBreak + 1;
}
if (shouldFold) layout.style = SCALAR_STYLE.FOLDED_BLOCK;
else if (multiline) layout.style = SCALAR_STYLE.LITERAL_BLOCK;
}
function quoteInvalidPlain(layout) {
if (layout.style === SCALAR_STYLE.PLAIN && !hasBit(layout.allowedStylesMask, SCALAR_STYLE.PLAIN)) layout.style = _preferredQuotedStyle(layout);
}
function fallbackToDoubleQuoted(layout) {
if (!hasBit(layout.allowedStylesMask, layout.style)) layout.style = SCALAR_STYLE.DOUBLE_QUOTED;
}
//#endregion
//#region src/ast/scalar_styler.ts
function setBit(mask, bit) {
return mask | 1 << bit;
}
var SRC_C_PRINTABLE = "[\\x09\\x0A\\x0D\\x20-\\x7E\\x85\\xA0-\\uD7FF\\uE000-\\uFFFD\\u{10000}-\\u{10FFFF}]";
var SRC_B_CHAR = "[\\n\\r]";
var SRC_C_BYTE_ORDER_MARK = "\\uFEFF";
var SRC_S_WHITE = "[ \\t]";
var SRC_NB_CHAR = `(?:(?!(?:${SRC_B_CHAR}|${SRC_C_BYTE_ORDER_MARK}))${SRC_C_PRINTABLE})`;
var SRC_NS_CHAR = `(?:(?!${SRC_S_WHITE})${SRC_NB_CHAR})`;
var SRC_NB_JSON = "[\\x09\\x20-\\uD7FF\\uE000-\\uFFFF\\u{10000}-\\u{10FFFF}]";
var SRC_C_INDICATOR = "[-?:,\\[\\]{}#&*!|>'\"%@`]";
var SRC_C_FLOW_INDICATOR = "[,\\[\\]{}]";
var SRC_NS_PLAIN_SAFE_FLOW_OUT = SRC_NS_CHAR;
var SRC_NS_PLAIN_SAFE_FLOW_IN = `(?:(?!${SRC_C_FLOW_INDICATOR})${SRC_NS_CHAR})`;
var SRC_NS_PLAIN_FIRST_FLOW_OUT = `(?:(?:(?!${SRC_C_INDICATOR})${SRC_NS_CHAR})|[?:-](?=${SRC_NS_PLAIN_SAFE_FLOW_OUT}))`;
var SRC_NS_PLAIN_FIRST_FLOW_IN = `(?:(?:(?!${SRC_C_INDICATOR})${SRC_NS_CHAR})|[?:-](?=${SRC_NS_PLAIN_SAFE_FLOW_IN}))`;
var SRC_NS_PLAIN_CHAR_FLOW_OUT = `(?:(?:(?![:#])${SRC_NS_PLAIN_SAFE_FLOW_OUT})|:(?=${SRC_NS_PLAIN_SAFE_FLOW_OUT}))#*`;
var SRC_NS_PLAIN_CHAR_FLOW_IN = `(?:(?:(?![:#])${SRC_NS_PLAIN_SAFE_FLOW_IN})|:(?=${SRC_NS_PLAIN_SAFE_FLOW_IN}))#*`;
var SRC_NB_NS_PLAIN_IN_LINE_FLOW_OUT = `(?:${SRC_S_WHITE}*${SRC_NS_PLAIN_CHAR_FLOW_OUT})*`;
var SRC_NB_NS_PLAIN_IN_LINE_FLOW_IN = `(?:${SRC_S_WHITE}*${SRC_NS_PLAIN_CHAR_FLOW_IN})*`;
var SRC_NS_PLAIN_ONE_LINE_FLOW_OUT = `${SRC_NS_PLAIN_FIRST_FLOW_OUT}#*${SRC_NB_NS_PLAIN_IN_LINE_FLOW_OUT}`;
var SRC_NS_PLAIN_ONE_LINE_FLOW_IN = `${SRC_NS_PLAIN_FIRST_FLOW_IN}#*${SRC_NB_NS_PLAIN_IN_LINE_FLOW_IN}`;
var SRC_NS_PLAIN_ONE_LINE_BLOCK_KEY = SRC_NS_PLAIN_ONE_LINE_FLOW_OUT;
var SRC_NS_PLAIN_ONE_LINE_FLOW_KEY = SRC_NS_PLAIN_ONE_LINE_FLOW_IN;
var SRC_S_NS_PLAIN_NEXT_LINE_FLOW_OUT = `\\n+${SRC_NS_PLAIN_CHAR_FLOW_OUT}${SRC_NB_NS_PLAIN_IN_LINE_FLOW_OUT}`;
var SRC_S_NS_PLAIN_NEXT_LINE_FLOW_IN = `\\n+${SRC_NS_PLAIN_CHAR_FLOW_IN}${SRC_NB_NS_PLAIN_IN_LINE_FLOW_IN}`;
var SRC_NS_PLAIN_MULTI_LINE_FLOW_OUT = `${SRC_NS_PLAIN_ONE_LINE_FLOW_OUT}(?:${SRC_S_NS_PLAIN_NEXT_LINE_FLOW_OUT})*`;
var SRC_NS_PLAIN_MULTI_LINE_FLOW_IN = `${SRC_NS_PLAIN_ONE_LINE_FLOW_IN}(?:${SRC_S_NS_PLAIN_NEXT_LINE_FLOW_IN})*`;
var NS_PLAIN_FLOW_OUT = new RegExp(`^(?:${SRC_NS_PLAIN_MULTI_LINE_FLOW_OUT})$`, "u");
var NS_PLAIN_FLOW_IN = new RegExp(`^(?:${SRC_NS_PLAIN_MULTI_LINE_FLOW_IN})$`, "u");
var NS_PLAIN_BLOCK_KEY = new RegExp(`^(?:${SRC_NS_PLAIN_ONE_LINE_BLOCK_KEY})$`, "u");
var NS_PLAIN_FLOW_KEY = new RegExp(`^(?:${SRC_NS_PLAIN_ONE_LINE_FLOW_KEY})$`, "u");
var NB_SINGLE_ONE_LINE = new RegExp(`^(?:${SRC_NB_JSON})*$`, "u");
var NB_SINGLE_MULTI_LINE = new RegExp(`^(?:${SRC_NB_JSON}|\\n)*$`, "u");
var BLOCK_SCALAR_CONTENT = new RegExp(`^(?:${SRC_NB_CHAR}|\\n)*$`, "u");
var C_FORBIDDEN_FIRST_LINE = /^(?:---|\.\.\.)(?=$|[ \t\n\r])/;
var C_FORBIDDEN_CONTENT = /^(?:---|\.\.\.)(?=$|[ \t\n\r])/m;
function canUsePlain(layout) {
const str = layout.node.value;
if (str !== "") {
if (!(layout.isKey ? layout.flowOnly ? NS_PLAIN_FLOW_KEY : NS_PLAIN_BLOCK_KEY : layout.flowOnly ? NS_PLAIN_FLOW_IN : NS_PLAIN_FLOW_OUT).test(str)) return false;
if (layout.shiftOfFirstLine === 0 && C_FORBIDDEN_FIRST_LINE.test(str)) return false;
if (layout.shiftOfContent === 0) {
const firstLineBreak = str.indexOf("\n");
if (firstLineBreak !== -1) {
const content = str.slice(firstLineBreak + 1);
if (C_FORBIDDEN_CONTENT.test(content)) return false;
}
}
}
const resolvedTag = layout.presenterOptions.schema.resolveImplicitScalarTag(str).tag.tagName;
if (!layout.node.tagged && resolvedTag !== layout.node.tag) return false;
if (!layout.node.tagged && str === "=" && resolvedTag === layout.presenterOptions.schema.defaultScalarTag.tagName) return false;
return true;
}
function canUseSingleQuoted(layout) {
const str = layout.node.value;
if (!(layout.isKey ? NB_SINGLE_ONE_LINE : NB_SINGLE_MULTI_LINE).test(str)) return false;
if (/[ \t]\n|\n[ \t]/.test(str)) return false;
if (!layout.isKey && layout.shiftOfContent === 0) {
const firstLineBreak = str.indexOf("\n");
if (firstLineBreak !== -1 && C_FORBIDDEN_CONTENT.test(str.slice(firstLineBreak + 1))) return false;
}
return true;
}
function canUseBlock(layout) {
if (layout.flowOnly || !BLOCK_SCALAR_CONTENT.test(layout.node.value)) return false;
const contentIndent = layout.shiftOfContent - layout.shiftOfParent;
if (contentIndent < 1) return false;
if (contentIndent > 9 && /^\n* /.test(layout.node.value)) return false;
if (layout.shiftOfContent === 0 && C_FORBIDDEN_CONTENT.test(layout.node.value)) return false;
return true;
}
function detectAllowedStyles(layout) {
let mask = setBit(0, SCALAR_STYLE.DOUBLE_QUOTED);
if (canUsePlain(layout)) mask = setBit(mask, SCALAR_STYLE.PLAIN);
if (canUseSingleQuoted(layout)) mask = setBit(mask, SCALAR_STYLE.SINGLE_QUOTED);
if (canUseBlock(layout)) mask = setBit(setBit(mask, SCALAR_STYLE.LITERAL_BLOCK), SCALAR_STYLE.FOLDED_BLOCK);
layout.allowedStylesMask = mask;
}
function renderScalar(layout) {
switch (layout.style) {
case SCALAR_STYLE.PLAIN: return renderPlain(layout);
case SCALAR_STYLE.SINGLE_QUOTED: return renderSingleQuoted(layout);
case SCALAR_STYLE.LITERAL_BLOCK: return renderLiteralBlock(layout);
case SCALAR_STYLE.FOLDED_BLOCK: return renderFoldedBlock(layout);
case SCALAR_STYLE.DOUBLE_QUOTED: return renderDoubleQuoted(layout);
}
}
function renderPlain(layout) {
return encodeFlowBreaks(layout.node.value, layout.shiftOfContent);
}
function renderSingleQuoted(layout) {
return `'${encodeFlowBreaks(layout.node.value, layout.shiftOfContent).replace(/'/g, "''")}'`;
}
function renderLiteralBlock(layout) {
const value = layout.node.value;
return "|" + blockHeader(value, layout.shiftOfParent, layout.shiftOfContent) + dropEndingNewline(indentString(value, layout.shiftOfContent));
}
function renderFoldedBlock(layout) {
const value = layout.node.value;
const w = layout.presenterOptions.lineWidth;
let availableWidth = Infinity;
if (w !== -1) availableWidth = Math.max(Math.min(w, 40), w - layout.shiftOfContent);
return ">" + blockHeader(value, layout.shiftOfParent, layout.shiftOfContent) + dropEndingNewline(indentString(foldBlockScalar(value, availableWidth), layout.shiftOfContent));
}
function renderDoubleQuoted(layout) {
return `"${escapeString(layout.node.value)}"`;
}
function encodeFlowBreaks(string, shiftOfContent) {
let nextLF = string.indexOf("\n");
if (nextLF === -1) return string;
const pad = " ".repeat(shiftOfContent);
let result = string.slice(0, nextLF);
const lineRe = /(\n+)([^\n]*)/g;
lineRe.lastIndex = nextLF;
let match;
while (match = lineRe.exec(string)) {
const breaks = match[1].length;
const line = match[2];
result += "\n".repeat(breaks + 1) + pad + line;
}
return result;
}
function indentString(string, spaces) {
const indent = " ".repeat(spaces);
let position = 0;
let result = "";
const length = string.length;
while (position < length) {
let line;
const next = string.indexOf("\n", position);
if (next === -1) {
line = string.slice(position);
position = length;
} else {
line = string.slice(position, next + 1);
position = next + 1;
}
if (line.length && line !== "\n") result += indent;
result += line;
}
return result;
}
function needIndentIndicator(string) {
return /^\n* /.test(string);
}
function blockHeader(string, shiftOfParent, shiftOfContent) {
const indentIndicator = needIndentIndicator(string) ? String(shiftOfContent - shiftOfParent) : "";
const clip = string[string.length - 1] === "\n";
return `${indentIndicator}${clip && (string[string.length - 2] === "\n" || string === "\n") ? "+" : clip ? "" : "-"}\n`;
}
function dropEndingNewline(string) {
return string[string.length - 1] === "\n" ? string.slice(0, -1) : string;
}
function isMoreIndented(char) {
return char === " " || char === " ";
}
function foldLine(line, width) {
if (line === "" || isMoreIndented(line[0])) return line;
const breakRe = / [^ \t]/g;
let match;
let start = 0;
let end;
let curr = 0;
let next = 0;
let result = "";
while (match = breakRe.exec(line)) {
next = match.index;
if (next - start > width) {
end = curr > start ? curr : next;
result += `\n${line.slice(start, end)}`;
start = end + 1;
}
curr = next;
}
result += "\n";
if (line.length - start > width && curr > start) result += `${line.slice(start, curr)}\n${line.slice(curr + 1)}`;
else result += line.slice(start);
return result.slice(1);
}
function foldBlockScalar(string, width) {
const lineRe = /(\n+)([^\n]*)/g;
let nextLF = string.indexOf("\n");
if (nextLF === -1) nextLF = string.length;
lineRe.lastIndex = nextLF;
let result = foldLine(string.slice(0, nextLF), width);
let prevMoreIndented = string[0] === "\n" || isMoreIndented(string[0]);
let moreIndented;
let match;
while (match = lineRe.exec(string)) {
const prefix = match[1];
const line = match[2];
moreIndented = line !== "" && isMoreIndented(line[0]);
result += prefix + (!prevMoreIndented && !moreIndented && line !== "" ? "\n" : "") + foldLine(line, width);
prevMoreIndented = moreIndented;
}
return result;
}
var CHARACTERS_TO_ESCAPE = /["\\\x00-\x1F\x7F-\xA0\u2028\u2029\uD800-\uDFFF\uFEFF\uFFFE\uFFFF]/gu;
function escapeCharacter(character) {
switch (character) {
case "\0": return "\\0";
case "\x07": return "\\a";
case "\b": return "\\b";
case " ": return "\\t";
case "\n": return "\\n";
case "\v": return "\\v";
case "\f": return "\\f";
case "\r": return "\\r";
case "\x1B": return "\\e";
case "\"": return "\\\"";
case "\\": return "\\\\";
case "
": return "\\N";
case "\xA0": return "\\_";
case "\u2028": return "\\L";
case "\u2029": return "\\P";
}
const code = character.charCodeAt(0);
const hex = code.toString(16).toUpperCase();
if (code <= 255) return `\\x${"0".repeat(2 - hex.length)}${hex}`;
return `\\u${"0".repeat(4 - hex.length)}${hex}`;
}
function escapeString(string) {
return string.replace(CHARACTERS_TO_ESCAPE, escapeCharacter);
}
//#endregion
//#region src/ast/presenter.ts
var CHAR_LINE_FEED = 10;
var DEFAULT_PRESENTER_OPTIONS = {
indent: 2,
seqNoIndent: false,
seqInlineFirst: true,
lineWidth: 80,
flowBracketPadding: false,
flowSkipCommaSpace: false,
flowSkipColonSpace: false,
quoteFlowKeys: false,
quoteStyle: "single",
forceQuotes: false,
scalarStyleRules: Object.keys(DEFAULT_SCALAR_STYLE_RULES).map((name) => Reflect.get(DEFAULT_SCALAR_STYLE_RULES, name)),
tagBeforeAnchor: false
};
function nodeTagShort(node) {
return node.tagged ? node.tag : tagNameShort(node.tag);
}
function createPresenterState(options) {
const opts = {
...DEFAULT_PRESENTER_OPTIONS,
...options
};
if (opts.flowSkipColonSpace) opts.quoteFlowKeys = true;
return {
...opts,
defaultScalarTagName: opts.schema.defaultScalarTag.tagName,
openEnded: false
};
}
function generateNextLine(state, level) {
return `\n${" ".repeat(state.indent * level)}`;
}
function scalarLayout(state, node, parent, level, isKey, flowOnly) {
return {
node,
parent,
level,
isKey,
flowOnly,
shiftOfParent: level === 0 ? -1 : state.indent * (level - 1),
shiftOfContent: state.indent * Math.max(1, level),
shiftOfFirstLine: level === 0 ? 0 : state.indent * level,
presenterOptions: state,
allowedStylesMask: 0,
style: node.style
};
}
function writeFlowSequence(state, level, node) {
let result = "";
for (let index = 0, length = node.items.length; index < length; index += 1) {
const item = writeNode(state, level, node.items[index], node, {}).text;
if (index > 0) result += `,${!state.flowSkipCommaSpace ? " " : ""}`;
result += item;
}
const pad = state.flowBracketPadding && node.items.length > 0 ? " " : "";
return `[${pad}${result}${pad}]`;
}
function writeBlockSequence(state, level, node, compact) {
let result = "";
for (let index = 0, length = node.items.length; index < length; index += 1) {
const item = writeNode(state, level + 1, node.items[index], node, {
block: true,
compact: state.seqInlineFirst,
isblockseq: true
}).text;
if (!compact || result !== "") result += generateNextLine(state, level);
if (item === "" || CHAR_LINE_FEED === item.charCodeAt(0)) result += "-";
else result += "- ";
result += item;
}
return result;
}
function writeFlowMapping(state, level, node) {
let result = "";
for (const { key, value } of node.items) {
let pairBuffer = "";
if (result !== "") pairBuffer += `,${!state.flowSkipCommaSpace ? " " : ""}`;
const keyRender = writeNode(state, level, key, node, { iskey: true });
const keyText = keyRender.text;
const valueText = writeNode(state, level, value, node, {}).text;
const sep = state.flowSkipColonSpace || valueText === "" ? "" : " ";
const keyIsBareProps = key.kind === "scalar" && keyRender.noBody && (key.tagged || key.anchor !== void 0);
const keyColonSep = key.kind === "alias" || keyIsBareProps ? " " : "";
pairBuffer += `${keyText}${keyColonSep}:${sep}${valueText}`;
result += pairBuffer;
}
const pad = state.flowBracketPadding && result !== "" ? " " : "";
return `{${pad}${result}${pad}}`;
}
function writeBlockMapping(state, level, node, compact) {
let result = "";
for (let index = 0, length = node.items.length; index < length; index += 1) {
let pairBuffer = "";
if (!compact || result !== "") pairBuffer += generateNextLine(state, level);
const { key, value } = node.items[index];
const keyIsBlock = (key.kind === "mapping" || key.kind === "sequence") && key.style === COLLECTION_STYLE.BLOCK && key.items.length !== 0 || key.kind === "scalar" && (key.style === SCALAR_STYLE.LITERAL_BLOCK || key.style === SCALAR_STYLE.FOLDED_BLOCK);
const keyRender = keyIsBlock ? writeNode(state, level + 1, key, node, {
block: true,
compact: true,
isblockseq: !cannotBeCompact(state, key, level + 1)
}) : writeNode(state, level + 1, key, node, {
block: true,
compact: true,
iskey: true
});
const keyText = keyRender.text;
const keyHasLineBreak = key.kind === "scalar" && key.value.indexOf("\n") !== -1;
const keyIsTooLong = keyText.length > 1024 && /^[\s\S]{1025}/u.test(keyText);
const explicitPair = keyIsBlock || keyHasLineBreak || keyIsTooLong;
if (explicitPair) if (keyText && CHAR_LINE_FEED === keyText.charCodeAt(0)) pairBuffer += "?";
else pairBuffer += "? ";
pairBuffer += keyText;
if (explicitPair) pairBuffer += generateNextLine(state, level);
const valueText = writeNode(state, level + 1, value, node, {
block: true,
compact: explicitPair,
isblockseq: explicitPair && !cannotBeCompact(state, value, level + 1)
}).text;
const keyIsBareProps = key.kind === "scalar" && keyRender.noBody && (key.tagged || key.anchor !== void 0);
const keyColonSep = !explicitPair && (key.kind === "alias" || keyIsBareProps) ? " " : "";
if (valueText === "" || CHAR_LINE_FEED === valueText.charCodeAt(0)) pairBuffer += `${keyColonSep}:`;
else pairBuffer += `${keyColonSep}: `;
pairBuffer += valueText;
result += pairBuffer;
}
return result;
}
function cannotBeCompact(state, node, level) {
if (node.kind === "alias") return true;
return node.tagged || node.anchor !== void 0 || state.indent < 2 && level > 0;
}
function writeNode(state, level, node, parent, ctx) {
if (node.kind === "alias") {
state.openEnded = false;
return {
text: `*${node.anchor}`,
noBody: false
};
}
const { block = false, iskey = false, isblockseq = false } = ctx;
let compact = ctx.compact ?? false;
const hasAnchor = node.anchor !== void 0;
if (cannotBeCompact(state, node, level)) compact = false;
let body;
let shouldPrintTag = node.tagged;
const useBlockCollection = block && (node.kind === "mapping" || node.kind === "sequence") && node.style === COLLECTION_STYLE.BLOCK && node.items.length !== 0;
if (node.kind === "mapping") if (useBlockCollection) body = writeBlockMapping(state, level, node, compact);
else body = writeFlowMapping(state, level, node);
else if (node.kind === "sequence") if (useBlockCollection) if (state.seqNoIndent && !isblockseq && level > 0) body = writeBlockSequence(state, level - 1, node, compact);
else body = writeBlockSequence(state, level, node, compact);
else body = writeFlowSequence(state, level, node);
else {
const layout = scalarLayout(state, node, parent, level, iskey, !block);
detectAllowedStyles(layout);
for (const rule of state.scalarStyleRules) rule(layout);
body = renderScalar(layout);
state.openEnded = (layout.style === SCALAR_STYLE.LITERAL_BLOCK || layout.style === SCALAR_STYLE.FOLDED_BLOCK) && (node.value === "\n" || node.value.endsWith("\n\n"));
shouldPrintTag = node.tagged || body === "" && layout.flowOnly && parent?.kind === "sequence" && !hasAnchor || layout.style !== SCALAR_STYLE.PLAIN && node.tag !== state.defaultScalarTagName;
}
if ((node.kind === "mapping" || node.kind === "sequence") && !useBlockCollection) state.openEnded = false;
if (useBlockCollection && compact && level > 0 && state.indent > 2) body = `${" ".repeat(state.indent - 2)}${body}`;
const noBody = body === "";
let text = body;
if (shouldPrintTag || hasAnchor) {
const props = [];
const tag = shouldPrintTag ? nodeTagShort(node) : null;
const anchor = hasAnchor ? `&${node.anchor}` : null;
if (state.tagBeforeAnchor) {
if (tag !== null) props.push(tag);
if (anchor !== null) props.push(anchor);
} else {
if (anchor !== null) props.push(anchor);
if (tag !== null) props.push(tag);
}
const sep = body === "" || body.charCodeAt(0) === CHAR_LINE_FEED ? "" : " ";
text = `${props.join(" ")}${sep}${body}`;
}
return {
text,
noBody
};
}
function rootStartsOwnLine(node) {
return (node.kind === "sequence" || node.kind === "mapping") && node.style === COLLECTION_STYLE.BLOCK && node.items.length !== 0 && !node.tagged && node.anchor === void 0;
}
function writeDocumentDirectives(doc) {
let result = "";
for (const directive of doc.directives) {
if (directive.kind === "yaml") {
result += `%YAML ${directive.version}\n`;
continue;
}
const { handle, prefix } = directive;
result += `%TAG ${handle} ${prefix}\n`;
}
return result;
}
/**
* Build YAML from AST.
*
* @category AST
*/
function present(documents, options) {
const state = createPresenterState(options);
let result = "";
let previousEnded = false;
for (let index = 0; index < documents.length; index += 1) {
const doc = documents[index];
state.openEnded = false;
const directives = writeDocumentDirectives(doc);
const hasDirectives = directives !== "";
const marker = doc.explicitStart || hasDirectives || index > 0 && !previousEnded;
result += directives;
if (doc.contents === null) {
if (marker) result += "---\n";
} else if (marker) {
const body = writeNode(state, 0, doc.contents, null, {
block: true,
compact: true
}).text;
const sep = body === "" ? "" : hasDirectives || rootStartsOwnLine(doc.contents) ? "\n" : " ";
result += `---${sep}${body}\n`;
} else result += writeNode(state, 0, doc.contents, null, {
block: true,
compact: true
}).text + "\n";
previousEnded = doc.explicitEnd || state.openEnded;
if (previousEnded) result += "...\n";
}
return result;
}
//#endregion
//#region src/dump.ts
var DEFAULT_DUMP_OPTIONS = {
...DEFAULT_PRESENTER_OPTIONS,
schema: DUMP_SCHEMA,
skipInvalid: false,
noRefs: false,
flowLevel: -1,
sortKeys: false,
transform: () => {}
};
function defaultCompareFn(a, b) {
const x = String(a);
const y = String(b);
if (x < y) return -1;
if (x > y) return 1;
return 0;
}
/**
* Serializes JS object as a YAML document. By default it can dump every
* supported YAML type, so it throws an exception if you try to dump regexps or
* functions. However, you can disable exceptions by setting the
* {@link DumpOptions.skipInvalid} option to `true`.
*
* @category Main
*/
function dump(input, options = {}) {
const opts = {
...DEFAULT_DUMP_OPTIONS,
...options
};
const documents = jsToAst(input, opts.schema, {
noRefs: opts.noRefs,
skipInvalid: opts.skipInvalid
});
if (opts.flowLevel >= 0) visit(documents, (node, ctx) => {
if (ctx.depth < opts.flowLevel) return;
if (node.kind === "sequence" || node.kind === "mapping") node.style = COLLECTION_STYLE.FLOW;
return VISIT_SKIP;
});
if (opts.sortKeys) {
const compareFn = opts.sortKeys === true ? defaultCompareFn : opts.sortKeys;
visit(documents, (node) => {
if (node.kind !== "mapping") return;
node.items.sort((a, b) => compareFn(a.key.kind === "scalar" ? a.key.value : "", b.key.kind === "scalar" ? b.key.value : ""));
});
}
opts.transform(documents);
return present(documents, {
...pick(opts, Object.keys(DEFAULT_PRESENTER_OPTIONS)),
schema: opts.schema
});
}
//#endregion
//#region src/ast/from_events.ts
var NO_RANGE = -1;
function eventPosition(event) {
if ("tagStart" in event && event.tagStart !== NO_RANGE) return event.tagStart;
if ("anchorStart" in event && event.anchorStart !== NO_RANGE) return event.anchorStart;
if ("valueStart" in event && event.valueStart !== NO_RANGE) return event.valueStart;
if ("start" in event) return event.start;
return 0;
}
function rawTag(state, event) {
return event.tagStart === NO_RANGE ? "" : state.source.slice(event.tagStart, event.tagEnd);
}
function anchorName(state, event) {
return event.anchorStart === NO_RANGE ? void 0 : state.source.slice(event.anchorStart, event.anchorEnd);
}
function buildScalar(state, event) {
const value = getScalarValue(state.source, event);
const raw = rawTag(state, event);
let tag;
let tagged = false;
if (raw !== "") {
tagged = true;
tag = raw;
} else if (event.style === SCALAR_STYLE.PLAIN) tag = state.schema.resolveImplicitScalarTag(value).tag.tagName;
else tag = state.schema.defaultScalarTag.tagName;
return {
kind: "scalar",
tag,
tagged,
style: event.style,
anchor: anchorName(state, event),
value
};
}
function buildCollection(state, event, defaultTagName) {
const raw = rawTag(state, event);
let tag;
let tagged = false;
if (raw === "") tag = defaultTagName;
else {
tag = raw;
tagged = true;
}
return {
tag,
tagged,
style: event.style,
anchor: anchorName(state, event)
};
}
function addNode(state, node) {
const frame = state.frames[state.frames.length - 1];
if (frame.kind === "document") frame.doc.contents = node;
else if (frame.kind === "sequence") frame.node.items.push(node);
else if (frame.key) {
frame.node.items.push({
key: frame.key,
value: node
});
frame.key = null;
} else frame.key = node;
}
/**
* Builds an AST from parser events
*
* @category AST
*/
function eventsToAst(events, options) {
const state = {
source: options.source,
schema: options.schema,
eventIndex: 0,
position: 0,
frames: [],
documents: []
};
while (state.eventIndex < events.length) {
const event = events[state.eventIndex++];
state.position = eventPosition(event);
switch (event.type) {
case EVENT_ID.DOCUMENT: {
const doc = {
contents: null,
explicitStart: event.explicitStart,
explicitEnd: event.explicitEnd,
directives: event.directives
};
state.frames.push({
kind: "document",
doc
});
break;
}
case EVENT_ID.SCALAR:
addNode(state, buildScalar(state, event));
break;
case EVENT_ID.SEQUENCE: {
const { tag, tagged, style, anchor } = buildCollection(state, event, "tag:yaml.org,2002:seq");
const node = {
kind: "sequence",
tag,
tagged,
style,
anchor,
items: []
};
state.frames.push({
kind: "sequence",
node
});
break;
}
case EVENT_ID.MAPPING: {
const { tag, tagged, style, anchor } = buildCollection(state, event, "tag:yaml.org,2002:map");
const node = {
kind: "mapping",
tag,
tagged,
style,
anchor,
items: []
};
state.frames.push({
kind: "mapping",
node,
key: null
});
break;
}
case EVENT_ID.ALIAS:
addNode(state, {
kind: "alias",
anchor: state.source.slice(event.anchorStart, event.anchorEnd)
});
break;
case EVENT_ID.POP: {
const frame = state.frames.pop();
if (frame.kind === "mapping" && frame.key) throw new Error("incomplete mapping pair in event stream");
if (frame.kind === "document") state.documents.push(frame.doc);
else addNode(state, frame.node);
break;
}
}
}
return state.documents;
}
//#endregion
//#region src/index.ts
/** @deprecated Use `EVENT_ID.DOCUMENT` instead. @internal */
var EVENT_DOCUMENT = EVENT_ID.DOCUMENT;
/** @deprecated Use `EVENT_ID.SEQUENCE` instead. @internal */
var EVENT_SEQUENCE = EVENT_ID.SEQUENCE;
/** @deprecated Use `EVENT_ID.MAPPING` instead. @internal */
var EVENT_MAPPING = EVENT_ID.MAPPING;
/** @deprecated Use `EVENT_ID.SCALAR` instead. @internal */
var EVENT_SCALAR = EVENT_ID.SCALAR;
/** @deprecated Use `EVENT_ID.ALIAS` instead. @internal */
var EVENT_ALIAS = EVENT_ID.ALIAS;
/** @deprecated Use `EVENT_ID.POP` instead. @internal */
var EVENT_POP = EVENT_ID.POP;
/** @deprecated Use `SCALAR_STYLE.PLAIN` instead. @internal */
var SCALAR_STYLE_PLAIN = SCALAR_STYLE.PLAIN;
/** @deprecated Use `SCALAR_STYLE.SINGLE_QUOTED` instead. @internal */
var SCALAR_STYLE_SINGLE_QUOTED = SCALAR_STYLE.SINGLE_QUOTED;
/** @deprecated Use `SCALAR_STYLE.DOUBLE_QUOTED` instead. @internal */
var SCALAR_STYLE_DOUBLE_QUOTED = SCALAR_STYLE.DOUBLE_QUOTED;
/** @deprecated Use `SCALAR_STYLE.LITERAL_BLOCK` instead. @internal */
var SCALAR_STYLE_LITERAL_BLOCK = SCALAR_STYLE.LITERAL_BLOCK;
/** @deprecated Use `SCALAR_STYLE.FOLDED_BLOCK` instead. @internal */
var SCALAR_STYLE_FOLDED_BLOCK = SCALAR_STYLE.FOLDED_BLOCK;
/** @deprecated Use `COLLECTION_STYLE.BLOCK` instead. @internal */
var COLLECTION_STYLE_BLOCK = COLLECTION_STYLE.BLOCK;
/** @deprecated Use `COLLECTION_STYLE.FLOW` instead. @internal */
var COLLECTION_STYLE_FLOW = COLLECTION_STYLE.FLOW;
/** @deprecated Use `CHOMPING_MODE.CLIP` instead. @internal */
var CHOMPING_CLIP = CHOMPING_MODE.CLIP;
/** @deprecated Use `CHOMPING_MODE.STRIP` instead. @internal */
var CHOMPING_STRIP = CHOMPING_MODE.STRIP;
/** @deprecated Use `CHOMPING_MODE.KEEP` instead. @internal */
var CHOMPING_KEEP = CHOMPING_MODE.KEEP;
//#endregion
export { CHOMPING_CLIP, CHOMPING_KEEP, CHOMPING_MODE, CHOMPING_STRIP, COLLECTION_STYLE, COLLECTION_STYLE_BLOCK, COLLECTION_STYLE_FLOW, CORE_SCHEMA, DEFAULT_SCALAR_STYLE_RULES, DUMP_SCHEMA, EVENT_ALIAS, EVENT_DOCUMENT, EVENT_ID, EVENT_MAPPING, EVENT_POP, EVENT_SCALAR, EVENT_SEQUENCE, FAILSAFE_SCHEMA, JSON_SCHEMA, NOT_RESOLVED, SCALAR_STYLE, SCALAR_STYLE_DOUBLE_QUOTED, SCALAR_STYLE_FOLDED_BLOCK, SCALAR_STYLE_LITERAL_BLOCK, SCALAR_STYLE_PLAIN, SCALAR_STYLE_SINGLE_QUOTED, Schema, VISIT_BREAK, VISIT_SKIP, YAML11_SCHEMA, YAMLException, binaryTag, boolCoreTag, boolJsonTag, boolYaml11Tag, constructFromEvents, defineMappingTag, defineScalarTag, defineSequenceTag, dump, eventsToAst, floatCoreTag, floatJsonTag, floatYaml11Tag, getScalarValue, intCoreTag, intJsonTag, intYaml11Tag, jsToAst, legacyMapTag, load, loadAll, mapTag, mergeTag, nullCoreTag, nullJsonTag, nullYaml11Tag, omapTag, pairsTag, parseEvents, present, realMapTag, seqTag, setTag, strTag, timestampTag, visit };
//# sourceMappingURL=js-yaml.mjs.map