Class LineCounter

Tracks newlines during parsing in order to provide an efficient API for determining the one-indexed { line, col } position for any offset within the input.

Constructors

constructor

Properties

addNewLine linePos lineStarts

Constructors

constructor

Properties

addNewLine

addNewLine: ((offset) => number)

Type declaration

    • (offset): number

    • Should be called in ascending order. Otherwise, call lineCounter.lineStarts.sort() before calling linePos().

      Parameters

      • offset: number

      Returns number

linePos

linePos: ((offset) => {
    col: number;
    line: number;
})

Type declaration

    • (offset): {
          col: number;
          line: number;
      }

    • Performs a binary search and returns the 1-indexed { line, col } position of offset. If line === 0, addNewLine has never been called or offset is before the first known newline.

      Parameters

      • offset: number

      Returns {
          col: number;
          line: number;
      }

      • col: number
      • line: number

lineStarts

lineStarts: number[]

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