public final ASTNode visitSimpleExpr()

in parser/sql/dialect/presto/src/main/java/org/apache/shardingsphere/sql/parser/presto/visitor/statement/PrestoStatementVisitor.java [464:512]
49 lines of code
14 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(), (PrestoSelectStatement) visit(ctx.subquery()), getOriginalText(ctx.subquery()));
            return null == ctx.EXISTS() ? new SubqueryExpressionSegment(subquerySegment) : 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.OR_()) {
            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.OR_().getText(), text);
        }
        return visitRemainSimpleExpr(ctx);
    }