Method parseFrameExtent

parser/parser_query.go:700–715

parseFrameExtent parses a single frame extent

()

// parseFrameExtent parses a single frame extent
func (p *Parser) parseFrameExtent() (Expr, error) {
	switch {
	case p.matchKeyword(KeywordCurrent):
		return p.parseFrameCurrentRow()
	case p.matchKeyword(KeywordUnbounded):
		return p.parseFrameUnbounded()
	case p.matchTokenKind(TokenKindInt):
		return p.parseFrameNumber()
	case p.matchTokenKind(TokenKindLBrace):
		return p.parseFrameParam()
	case p.matchKeyword(KeywordInterval):
		return p.parseFrameInterval()
	default:
		return nil, fmt.Errorf("expected UNBOUNDED, CURRENT ROW, integer, parameter, or interval")
	}
}

func (p *Parser) parseFrameCurrentRow() (Expr, error) {
	currentPos := p.Pos()