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// @flow strict
import type { Source } from './source';
/**
* Represents a location in a Source.
*/
export type SourceLocation = {|
+line: number,
+column: number,
|};
/**
* Takes a Source and a UTF-8 character offset, and returns the corresponding
* line and column as a SourceLocation.
*/
export function getLocation(source: Source, position: number): SourceLocation {
const lineRegexp = /\r\n|[\n\r]/g;
let line = 1;
let column = position + 1;
let match;
while ((match = lineRegexp.exec(source.body)) && match.index < position) {
line += 1;
column = position + 1 - (match.index + match[0].length);
}
return { line, column };
}
|
