public final ASTNode visitSimpleExpr()

in parser/sql/dialect/doris/src/main/java/org/apache/shardingsphere/sql/parser/doris/visitor/statement/DorisStatementVisitor.java [601:661]
61 lines of code
18 McCabe index (conditional complexity)

    public final ASTNode visitSimpleExpr(final SimpleExprContext ctx) {
        int startIndex = ctx.start.getStartIndex();
        int stopIndex = ctx.stop.getStopIndex();
        if (null != ctx.subquery()) {
            SubquerySegment subquerySegment = new SubquerySegment(
                    ctx.subquery().getStart().getStartIndex(), ctx.subquery().getStop().getStopIndex(), (DorisSelectStatement) visit(ctx.subquery()), getOriginalText(ctx.subquery()));
            if (null == ctx.EXISTS()) {
                return new SubqueryExpressionSegment(subquerySegment);
            }
            subquerySegment.getSelect().setSubqueryType(SubqueryType.EXISTS);
            return new ExistsSubqueryExpression(startIndex, stopIndex, subquerySegment);
        }
        if (null != ctx.parameterMarker()) {
            ParameterMarkerValue parameterMarker = (ParameterMarkerValue) visit(ctx.parameterMarker());
            ParameterMarkerExpressionSegment result = new ParameterMarkerExpressionSegment(startIndex, stopIndex, parameterMarker.getValue(), parameterMarker.getType());
            parameterMarkerSegments.add(result);
            return result;
        }
        if (null != ctx.literals()) {
            return SQLUtils.createLiteralExpression(visit(ctx.literals()), startIndex, stopIndex, ctx.literals().start.getInputStream().getText(new Interval(startIndex, stopIndex)));
        }
        if (null != ctx.intervalExpression()) {
            return visit(ctx.intervalExpression());
        }
        if (null != ctx.functionCall()) {
            return visit(ctx.functionCall());
        }
        if (null != ctx.collateClause()) {
            ExpressionSegment expr = null == ctx.simpleExpr() ? null : (ExpressionSegment) visit(ctx.simpleExpr(0));
            return new CollateExpression(startIndex, stopIndex, (SimpleExpressionSegment) visit(ctx.collateClause()), expr);
        }
        if (null != ctx.columnRef()) {
            return visit(ctx.columnRef());
        }
        if (null != ctx.matchExpression()) {
            return visit(ctx.matchExpression());
        }
        if (null != ctx.notOperator()) {
            ASTNode expression = visit(ctx.simpleExpr(0));
            if (expression instanceof ExistsSubqueryExpression) {
                ((ExistsSubqueryExpression) expression).setNot(true);
                return expression;
            }
            return new NotExpression(startIndex, stopIndex, (ExpressionSegment) expression, "!".equalsIgnoreCase(ctx.notOperator().getText()));
        }
        if (null != ctx.LP_() && 1 == ctx.expr().size()) {
            ASTNode result = visit(ctx.expr(0));
            if (result instanceof ColumnSegment) {
                ((ColumnSegment) result).setLeftParentheses(new ParenthesesSegment(ctx.LP_().getSymbol().getStartIndex(), ctx.LP_().getSymbol().getStopIndex(), ctx.LP_().getSymbol().getText()));
                ((ColumnSegment) result).setRightParentheses(new ParenthesesSegment(ctx.RP_().getSymbol().getStartIndex(), ctx.RP_().getSymbol().getStopIndex(), ctx.RP_().getSymbol().getText()));
            }
            return result;
        }
        if (null != ctx.VERTICAL_BAR_() && 2 == ctx.VERTICAL_BAR_().size()) {
            ExpressionSegment left = (ExpressionSegment) visit(ctx.simpleExpr(0));
            ExpressionSegment right = (ExpressionSegment) visit(ctx.simpleExpr(1));
            String text = ctx.start.getInputStream().getText(new Interval(ctx.start.getStartIndex(), ctx.stop.getStopIndex()));
            return new BinaryOperationExpression(ctx.start.getStartIndex(), ctx.stop.getStopIndex(), left, right, ctx.VERTICAL_BAR_(0).getText() + ctx.VERTICAL_BAR_(1).getText(), text);
        }
        return visitRemainSimpleExpr(ctx);
    }