package gudusoft.gsqlparser.nodes;

import gudusoft.gsqlparser.*;
import gudusoft.gsqlparser.stmt.TSelectSqlStatement;

/**
 * Oracle 26 FOR LOOP iteration control.
 * Represents a single iteration control in a FOR LOOP, supporting:
 * - Range iteration: lower_bound..upper_bound [BY step]
 * - REVERSE range iteration: REVERSE lower_bound..upper_bound [BY step]
 * - VALUES OF collection
 * - INDICES OF collection
 * - EXECUTE IMMEDIATE dynamic SQL
 * - REPEAT single expression control
 *
 * Multiple iteration controls can be combined in a single FOR LOOP:
 * FOR i IN 1..3, REVERSE i+1..i+10, 51..55 LOOP ... END LOOP;
 */
public class TIterationControl extends TParseTreeNode {

    public static final int RANGE = 1;
    public static final int VALUES_OF = 2;
    public static final int INDICES_OF = 3;
    public static final int EXECUTE_IMMEDIATE = 4;
    public static final int REPEAT_EXPR = 5;
    public static final int CURSOR = 6;
    public static final int SINGLE_EXPR = 7;
    public static final int PAIRS_OF = 8;

    private int controlType = RANGE;
    private boolean isReverse = false;

    // For range iteration: lower_bound..upper_bound
    private TExpression lowerBound;
    private TExpression upperBound;

    // For BY step clause
    private TExpression stepExpression;

    // For VALUES OF / INDICES OF collection reference
    private TObjectName collectionRef;

    // For EXECUTE IMMEDIATE
    private TExpression executeExpr;
    private TExpressionList executeUsingVars;

    // For REPEAT single expression
    private TExpression repeatExpr;

    // For WHILE/WHEN predicates on this specific iteration control
    private TExpression whilePredicate;
    private TExpression whenPredicate;

    // For cursor FOR LOOP
    private TSelectSqlStatement subquery;
    private TObjectName cursorName;
    private TExpressionList cursorParameterNames;

    public TIterationControl() {
    }

    public void init(Object arg1) {
        // Used for simple initializations
    }

    public int getControlType() {
        return controlType;
    }

    public void setControlType(int controlType) {
        this.controlType = controlType;
    }

    public boolean isReverse() {
        return isReverse;
    }

    public void setReverse(boolean reverse) {
        isReverse = reverse;
    }

    public TExpression getLowerBound() {
        return lowerBound;
    }

    public void setLowerBound(TExpression lowerBound) {
        this.lowerBound = lowerBound;
    }

    public TExpression getUpperBound() {
        return upperBound;
    }

    public void setUpperBound(TExpression upperBound) {
        this.upperBound = upperBound;
    }

    public TExpression getStepExpression() {
        return stepExpression;
    }

    public void setStepExpression(TExpression stepExpression) {
        this.stepExpression = stepExpression;
    }

    public TObjectName getCollectionRef() {
        return collectionRef;
    }

    public void setCollectionRef(TObjectName collectionRef) {
        this.collectionRef = collectionRef;
    }

    public TExpression getExecuteExpr() {
        return executeExpr;
    }

    public void setExecuteExpr(TExpression executeExpr) {
        this.executeExpr = executeExpr;
    }

    public TExpressionList getExecuteUsingVars() {
        return executeUsingVars;
    }

    public void setExecuteUsingVars(TExpressionList executeUsingVars) {
        this.executeUsingVars = executeUsingVars;
    }

    public TExpression getRepeatExpr() {
        return repeatExpr;
    }

    public void setRepeatExpr(TExpression repeatExpr) {
        this.repeatExpr = repeatExpr;
    }

    public TExpression getWhilePredicate() {
        return whilePredicate;
    }

    public void setWhilePredicate(TExpression whilePredicate) {
        this.whilePredicate = whilePredicate;
    }

    public TExpression getWhenPredicate() {
        return whenPredicate;
    }

    public void setWhenPredicate(TExpression whenPredicate) {
        this.whenPredicate = whenPredicate;
    }

    public TSelectSqlStatement getSubquery() {
        return subquery;
    }

    public void setSubquery(TSelectSqlStatement subquery) {
        this.subquery = subquery;
    }

    public TObjectName getCursorName() {
        return cursorName;
    }

    public void setCursorName(TObjectName cursorName) {
        this.cursorName = cursorName;
    }

    public TExpressionList getCursorParameterNames() {
        return cursorParameterNames;
    }

    public void setCursorParameterNames(TExpressionList cursorParameterNames) {
        this.cursorParameterNames = cursorParameterNames;
    }

    public void accept(TParseTreeVisitor v) {
        v.preVisit(this);
        v.postVisit(this);
    }

    public void acceptChildren(TParseTreeVisitor v) {
        v.preVisit(this);
        if (lowerBound != null) lowerBound.acceptChildren(v);
        if (upperBound != null) upperBound.acceptChildren(v);
        if (stepExpression != null) stepExpression.acceptChildren(v);
        if (executeExpr != null) executeExpr.acceptChildren(v);
        if (executeUsingVars != null) executeUsingVars.acceptChildren(v);
        if (repeatExpr != null) repeatExpr.acceptChildren(v);
        if (whilePredicate != null) whilePredicate.acceptChildren(v);
        if (whenPredicate != null) whenPredicate.acceptChildren(v);
        if (subquery != null) subquery.acceptChildren(v);
        v.postVisit(this);
    }
}