Function createError

parinfer.js:560–615

(result, name)

  }

  function createError (result, name) {
    const cache = result.errorPosCache[name]

    let keyLineNo = 'inputLineNo'
    let keyX = 'inputX'
    if (result.partialResult) {
      keyLineNo = 'lineNo'
      keyX = 'x'
    }

    let lineNo = 0
    let x = 0
    if (cache) {
      lineNo = cache[keyLineNo]
      x = cache[keyX]
    } else {
      lineNo = result[keyLineNo]
      x = result[keyX]
    }

    const err = {
      parinferError: true,
      name: name,
      message: errorMessages[name],
      lineNo: lineNo,
      x: x
    }
    const opener = peek(result.parenStack, 0)

    if (name === ERROR_UNMATCHED_CLOSE_PAREN) {
      // extra error info for locating the open-paren that it should've matched
      const cache2 = result.errorPosCache[ERROR_UNMATCHED_OPEN_PAREN]
      if (cache2 || opener) {
        let lineNo2 = 0
        let x2 = 0
        if (cache2) {
          lineNo2 = cache2[keyLineNo]
          x2 = cache2[keyX]
        } else {
          lineNo2 = opener[keyLineNo]
          x2 = opener[keyX]
        }

        err.extra = {
          name: ERROR_UNMATCHED_OPEN_PAREN,
          lineNo: lineNo2,
          x: x2
        }
      }
    } else if (name === ERROR_UNCLOSED_PAREN) {
      err.lineNo = opener[keyLineNo]
      err.x = opener[keyX]
    }

    return err
  }

  // ---------------------------------------------------------------------------