Method parseInterpolateClause

parser/parser_table.go:1057–1101

(interpolatePos Pos)

}

func (p *Parser) parseInterpolateClause(interpolatePos Pos) (*InterpolateClause, error) {
	interpolate := &InterpolateClause{
		InterpolatePos: interpolatePos,
		ListEnd:        interpolatePos + Pos(len("INTERPOLATE")),
	}

	if p.tryConsumeTokenKind(TokenKindLParen) == nil {
		// INTERPOLATE without columns is valid
		return interpolate, nil
	}

	items := make([]*InterpolateItem, 0)
	for {
		column, err := p.parseIdent()
		if err != nil {
			return nil, err
		}

		item := &InterpolateItem{Column: column}

		if p.tryConsumeKeywords(KeywordAs) {
			expr, err := p.parseExpr(interpolatePos)
			if err != nil {
				return nil, err
			}
			item.Expr = expr
		}

		items = append(items, item)

		if p.tryConsumeTokenKind(TokenKindComma) == nil {
			break
		}
	}

	rparen := p.tryConsumeTokenKind(TokenKindRParen)
	if rparen == nil {
		return nil, fmt.Errorf("expected ')' after INTERPOLATE column list")
	}

	interpolate.Items = items
	interpolate.ListEnd = rparen.End

	return interpolate, nil
}

func (p *Parser) tryParseTTLClause(pos Pos, allowMultiValues bool) (*TTLClause, error) {
	if !p.tryConsumeKeywords(KeywordTtl) {