// Delay parsing to type-specific function
// according to found character
// --------------------------------------------------------------------------------
// @param [string] $source: JSON complete source
// @param [number] $pointer: current pointer
// --------------------------------------------------------------------------------
// @throw "Unexpected token $token."
// @throw "Empty JSON string."
// --------------------------------------------------------------------------------
// @return [list|false] (new pointer, parsed value)

@function _json-decode--value($source, $pointer) {
  $length: str-length($source);

  @while $pointer <= $length {
    $token: str-slice($source, $pointer, $pointer);
    $pointer: $pointer + 1;

    @if $token == "{" {
      @return _json-decode--map($source, $pointer);
    } @else if $token == "[" {
      @return _json-decode--list($source, $pointer);
    } @else if $token == "t" {
      @return _json-decode--true($source, $pointer);
    } @else if $token == "f" {
      @return _json-decode--false($source, $pointer);
    } @else if $token == '"' {
      @return _json-decode--string($source, $pointer);
    } @else if $token == "n" {
      @return _json-decode--null($source, $pointer);
    } @else if index("1" "2" "3" "4" "5" "6" "7" "8" "9" "0" "-" ".", $token) {
      @return _json-decode--number($source, $pointer);
    } @else if $token == " " or $token == "	" {
      // @continue;
    } @else {
      @return _throw("Unexpected token `" + $token + "`.", $pointer);
    }
  }

  @return _throw("Empty JSON string.", $pointer);
}