85 lines
2.1 KiB
Plaintext
85 lines
2.1 KiB
Plaintext
|
/**
|
||
|
|
* @typedef {import('unist').Node} Node
|
||
|
|
* @typedef {import('unist').Point} Point
|
||
|
|
* @typedef {import('unist').Position} Position
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @typedef NodeLike
|
||
|
|
* @property {string} type
|
||
|
|
* @property {PositionLike | null | undefined} [position]
|
||
|
|
*
|
||
|
|
* @typedef PointLike
|
||
|
|
* @property {number | null | undefined} [line]
|
||
|
|
* @property {number | null | undefined} [column]
|
||
|
|
* @property {number | null | undefined} [offset]
|
||
|
|
*
|
||
|
|
* @typedef PositionLike
|
||
|
|
* @property {PointLike | null | undefined} [start]
|
||
|
|
* @property {PointLike | null | undefined} [end]
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Serialize the positional info of a point, position (start and end points),
|
||
|
|
* or node.
|
||
|
|
*
|
||
|
|
* @param {Node | NodeLike | Point | PointLike | Position | PositionLike | null | undefined} [value]
|
||
|
|
* Node, position, or point.
|
||
|
|
* @returns {string}
|
||
|
|
* Pretty printed positional info of a node (`string`).
|
||
|
|
*
|
||
|
|
* In the format of a range `ls:cs-le:ce` (when given `node` or `position`)
|
||
|
|
* or a point `l:c` (when given `point`), where `l` stands for line, `c` for
|
||
|
|
* column, `s` for `start`, and `e` for end.
|
||
|
|
* An empty string (`''`) is returned if the given value is neither `node`,
|
||
|
|
* `position`, nor `point`.
|
||
|
|
*/
|
||
|
|
export function stringifyPosition(value) {
|
||
|
|
// Nothing.
|
||
|
|
if (!value || typeof value !== 'object') {
|
||
|
|
return ''
|
||
|
|
}
|
||
|
|
|
||
|
|
// Node.
|
||
|
|
if ('position' in value || 'type' in value) {
|
||
|
|
return position(value.position)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Position.
|
||
|
|
if ('start' in value || 'end' in value) {
|
||
|
|
return position(value)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Point.
|
||
|
|
if ('line' in value || 'column' in value) {
|
||
|
|
return point(value)
|
||
|
|
}
|
||
|
|
|
||
|
|
// ?
|
||
|
|
return ''
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Point | PointLike | null | undefined} point
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
function point(point) {
|
||
|
|
return index(point && point.line) + ':' + index(point && point.column)
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Position | PositionLike | null | undefined} pos
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
function position(pos) {
|
||
|
|
return point(pos && pos.start) + '-' + point(pos && pos.end)
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {number | null | undefined} value
|
||
|
|
* @returns {number}
|
||
|
|
*/
|
||
|
|
function index(value) {
|
||
|
|
return value && typeof value === 'number' ? value : 1
|
||
|
|
}
|