import {lineBreakG} from “./whitespace”
// These are used when `options.locations` is on, for the // `startLoc` and `endLoc` properties.
export class Position {
constructor(line, col) { this.line = line this.column = col } offset(n) { return new Position(this.line, this.column + n) }
}
export class SourceLocation {
constructor(p, start, end) { this.start = start this.end = end if (p.sourceFile !== null) this.source = p.sourceFile }
}
// The `getLineInfo` function is mostly useful when the // `locations` option is off (for performance reasons) and you // want to find the line/column position for a given character // offset. `input` should be the code string that the offset refers // into.
export function getLineInfo(input, offset) {
for (let line = 1, cur = 0;;) { lineBreakG.lastIndex = cur let match = lineBreakG.exec(input) if (match && match.index < offset) { ++line cur = match.index + match[0].length } else { return new Position(line, offset - cur) } }
}