Method parseIdentOrFunction

parser/parser_table.go:402–491

(_ Pos)

}

func (p *Parser) parseIdentOrFunction(_ Pos) (Expr, error) {
	ident, err := p.parseIdent()
	if err != nil {
		return nil, err
	}
	switch {
	case p.matchTokenKind(TokenKindLBracket):
		params, err := p.parseArrayParams(p.Pos())
		if err != nil {
			return nil, err
		}
		return &ObjectParams{
			Object: ident,
			Params: params,
		}, nil
	case p.matchTokenKind(TokenKindLParen):
		params, err := p.parseFunctionParams(p.Pos())
		if err != nil {
			return nil, err
		}
		funcExpr := &FunctionExpr{
			Name:   ident,
			Params: params,
		}

		overPos := p.Pos()
		if p.tryConsumeKeywords(KeywordOver) {
			var overExpr Expr
			switch {
			case p.matchTokenKind(TokenKindIdent):
				overExpr, err = p.parseIdent()
			case p.matchTokenKind(TokenKindLParen):
				overExpr, err = p.parseWindowCondition(p.Pos())
				if err != nil {
					return nil, err
				}
			default:
				return nil, fmt.Errorf("expected window name or (, but got %q", p.lastTokenKind())
			}

			if err != nil {
				return nil, err
			}
			return &WindowFunctionExpr{
				Function: funcExpr,
				OverPos:  overPos,
				OverExpr: overExpr,
			}, nil
		}
		return funcExpr, nil
	case p.tryConsumeTokenKind(TokenKindDot) != nil:
		switch {
		case p.matchTokenKind(TokenKindIdent):
			fields := []*Ident{ident}
			for {
				child, err := p.parseIdent()
				if err != nil {
					return nil, err