kodkod.ast.ExprToIntCast Java Examples

private IntExpression toInt(Expr x, Object y) throws Err, ErrorFatal {
    // simplify: if y is int[Int[sth]] then return sth
    if (y instanceof ExprToIntCast) {
        ExprToIntCast y2 = (ExprToIntCast) y;
        if (y2.expression() instanceof IntToExprCast)
            return ((IntToExprCast) y2.expression()).intExpr();
    }
    // simplify: if y is Int[sth], then return sth
    if (y instanceof IntToExprCast)
        return ((IntToExprCast) y).intExpr();
    if (y instanceof IntExpression)
        return (IntExpression) y;
    // [AM]: maybe this conversion should be removed
    if (y instanceof Expression)
        return ((Expression) y).sum();
    throw new ErrorFatal(x.span(), "This should have been an integer expression.\nInstead it is " + y);
}
 

/** @effects this.tokens' = concat[ this.tokens, "int","[",
 *   tokenize[node.expression], "]" ] **/
public void visit(ExprToIntCast node) {
	if (displayed(node)) return;
	final boolean oldTop = notTop();
	switch(node.op()) { 
	case SUM:
		append("int");
		append("[");
		node.expression().accept(this);
		append("]");
		break;
	case CARDINALITY : 
		append("#");
		append("(");
		node.expression().accept(this);
		append(")");
		break;
	default : throw new IllegalArgumentException("unknown operator: " + node.op());
	}
	top = oldTop;
}
 

public IntExpression visit(ExprToIntCast expr) { 
	IntExpression ret = lookup(expr);
	if (ret!=null) return ret;
	
	final ExprCastOperator op = expr.op();
	final Expression child = expr.expression().accept(this);
	
	final int hash = hash(op, child);
	for(Iterator<PartialCannonicalizer.Holder<IntExpression>> itr = intExprs.get(hash); itr.hasNext(); ) {
		final IntExpression next = itr.next().obj;
		if (next.getClass()==ExprToIntCast.class) { 
			if (((ExprToIntCast)next).expression()==child)
				return cache(expr, next);
		}
	}
	ret = child==expr.expression() ? expr : child.apply(op);
	intExprs.add(new PartialCannonicalizer.Holder<IntExpression>(ret, hash));
	return cache(expr,ret);
}
 

/** @ensures this.tokens' = concat[ this.tokens, "int","[",
 *   tokenize[node.expression], "]" ] **/
public void visit(ExprToIntCast node) {
	switch(node.op()) { 
	case SUM:
		append("int");
		append("[");
		node.expression().accept(this);
		append("]");
		break;
	case CARDINALITY : 
		append("#");
		append("(");
		node.expression().accept(this);
		append(")");
		break;
	default : throw new IllegalArgumentException("unknown operator: " + node.op());
	}
	
}
 

/** {@inheritDoc} */
@Override
public void visit(ExprToIntCast x) {
    String newname = makename(x);
    if (newname == null)
        return;
    String sub = make(x.expression());
    switch (x.op()) {
        case CARDINALITY :
            file.printf("IntExpression %s=%s.count();%n", newname, sub);
            break;
        case SUM :
            file.printf("IntExpression %s=%s.sum();%n", newname, sub);
            break;
        default :
            throw new RuntimeException("Unknown kodkod operator \"" + x.op() + "\" encountered");
    }
}
 

/**
 * @ensures this.tokens' = concat[ this.tokens, "int","[",
 *          tokenize[node.expression], "]" ]
 **/
@Override
public void visit(ExprToIntCast node) {
    switch (node.op()) {
        case SUM :
            append("int");
            append("[");
            node.expression().accept(this);
            append("]");
            break;
        case CARDINALITY :
            append("#");
            append("(");
            node.expression().accept(this);
            append(")");
            break;
        default :
            throw new IllegalArgumentException("unknown operator: " + node.op());
    }

}
 

/**
 * Calls lookup(intExpr) and returns the cached value, if any. If a translation
 * has not been cached, translates the expression, calls cache(...) on it and
 * returns it.
 *
 * @return let t = lookup(intExpr) | some t => t, cache(intExpr,
 *         translate(intExpr))
 */
@Override
public final Int visit(ExprToIntCast intExpr) {
    Int ret = lookup(intExpr);
    if (ret != null)
        return ret;
    vars = vars.createNested();
    BooleanMatrix expr = intExpr.expression().accept(this);
    switch (intExpr.op()) {
        case CARDINALITY :
            ret = expr.cardinality();
            break;
        case SUM :
            final IntSet ints = interpreter.ints();
            ret = sum(expr, ints.iterator(), 0, ints.size() - 1);
            break;
        default :
            throw new IllegalArgumentException("unknown operator: " + intExpr.op());
    }
    for (Variable v : vars)
        ret.defCond().addVar(v);
    vars = vars.parent();
    return cache(intExpr, ret);
}
 

/**
 * Calls lookup(intExpr) and returns the cached value, if any. If no cached
 * value exists, visits the child, caches its return value and returns it.
 *
 * @return let x = lookup(intExpr) | x != null => x, cache(intExpr,
 *         intExpr.expression.accept(this))
 */
@Override
public Set<T> visit(ExprToIntCast intExpr) {
    Set<T> ret = lookup(intExpr);
    if (ret != null)
        return ret;
    ret = newSet();
    ret.addAll(intExpr.expression().accept(this));
    return cache(intExpr, ret);
}
 

/**
 * Calls lookup(intExpr) and returns the cached value, if any. If a replacement
 * has not been cached, visits the expression's child. If nothing changes, the
 * argument is cached and returned, otherwise a replacement expression is cached
 * and returned.
 *
 * @return { i: ExprToIntCast | i.expression =
 *         intExpr.expression.accept(delegate) && i.op = intExpr.op}
 */
@Override
public IntExpression visit(ExprToIntCast intExpr) {
    IntExpression ret = lookup(intExpr);
    if (ret != null)
        return ret;

    final Expression expr = intExpr.expression().accept(delegate);
    ret = expr == intExpr.expression() ? intExpr : expr.apply(intExpr.op());
    return cache(intExpr, ret);
}
 

/** 
* Calls lookup(intExpr) and returns the cached value, if any.  
* If a replacement has not been cached, visits the expression's 
* child.  If nothing changes, the argument is cached and
* returned, otherwise a replacement expression is cached and returned.
* @return { i: ExprToIntCast | i.expression = intExpr.expression.accept(this) && i.op = intExpr.op}
*/
  public IntExpression visit(ExprToIntCast intExpr) {
IntExpression ret = lookup(intExpr);
if (ret!=null) return ret;
	
final Expression expr = intExpr.expression().accept(this);
ret = expr==intExpr.expression() ? intExpr : expr.apply(intExpr.op());
return cache(intExpr, ret);
  }
 

/**
 * Visits intExpr.expression if this.visited(intExpr) returns false. Otherwise
 * does nothing.
 *
 * @ensures intExpr.expression.accept(this)
 */
@Override
public void visit(ExprToIntCast intExpr) {
    if (visited(intExpr))
        return;
    intExpr.expression().accept(this);
}
 

/** 
 * Calls lookup(intExpr) and returns the cached value, if any.  
 * If no cached value exists, visits the child, caches its return value and returns it. 
 * @return let x = lookup(intExpr) | 
 *          x != null => x,  
 *          cache(intExpr, intExpr.expression.accept(this)) 
 */
public Set<T> visit(ExprToIntCast intExpr) {
	Set<T> ret = lookup(intExpr);
	if (ret!=null) return ret;
	ret = newSet();
	ret.addAll(intExpr.expression().accept(this));
	return cache(intExpr,ret);
}
 

/** 
 * Calls lookup(intExpr) and returns the cached value, if any.  
 * If a translation has not been cached, translates the expression,
 * calls cache(...) on it and returns it.
 * @return let t = lookup(intExpr) | some t => t, 
 * 	cache(intExpr, translate(intExpr))
 */
public final Int visit(ExprToIntCast intExpr) {
	Int ret = lookup(intExpr);
	if (ret!=null) return ret;
	switch(intExpr.op()) {
	case CARDINALITY : 
		ret = intExpr.expression().accept(this).cardinality(); break;
	case SUM         :
		final IntSet ints = interpreter.ints();
		ret = sum(intExpr.expression().accept(this), ints.iterator(), 0, ints.size()-1); break;
	default: 
		throw new IllegalArgumentException("unknown operator: " + intExpr.op());
	}
	return cache(intExpr, ret);
}
 

@Override
public IntExpression visit(ExprToIntCast intExpr) {
    return intExpr;
}
 

@Override
public void visit(ExprToIntCast intExpr) {
    visit(intExpr, intExpr.op(), intExpr.expression());
}
 

@Override
public Boolean visit(ExprToIntCast e) {
    return checkVisitedThenAccumA(e, Boolean.FALSE, e.expression());
}
 

/** @return true if the given expression should be parenthesized when a 
 * child of a compound parent */
private boolean parenthesize(IntExpression child) { 
	return !(child instanceof UnaryIntExpression || 
			 child instanceof IntConstant || 
			 child instanceof ExprToIntCast); 
}
 

@Override
public I visit(ExprToIntCast intExpr) {
    start(intExpr);
    return end(intExpr, visitor.visit(intExpr));
}
 

/** @return true if the given expression should be parenthesized when a 
 * child of a compound parent */
private boolean parenthesize(IntExpression child) { 
	return !(child instanceof UnaryIntExpression || 
			 child instanceof IntConstant || 
			 child instanceof ExprToIntCast); 
}
 

/**
 * Visits the given unary integer expression.
 */
public void visit(ExprToIntCast intExpr);
 

/**
 * Calls lookup(intExpr) and returns the cached value, if any. If no cached
 * value exists, visits the child, caches its return value and returns it.
 *
 * @return let x = lookup(intExpr) | x != null => x, cache(intExpr,
 *         intExpr.expression.accept(this))
 */
@Override
public Boolean visit(ExprToIntCast intExpr) {
    final Boolean ret = lookup(intExpr);
    return (ret != null) ? ret : cache(intExpr, intExpr.expression().accept(this));
}
 

/** 
 * Calls lookup(intExpr) and returns the cached value, if any.  
 * If no cached value exists, visits the child, caches its return value and returns it. 
 * @return let x = lookup(intExpr) | 
 *          x != null => x,  
 *          cache(intExpr, intExpr.expression.accept(this)) 
 */
public Boolean visit(ExprToIntCast intExpr) {
	final Boolean ret = lookup(intExpr);
	return (ret!=null) ? ret : cache(intExpr, intExpr.expression().accept(this));
}
 

/**
   * Visits the given unary integer expression and returns the result.
* @return the result of visiting <code>intExpr</code> 
   */
  public I visit(ExprToIntCast intExpr);
 

/**
 * Visits intExpr.expression  if
 * this.visited(intExpr) returns false.  Otherwise does nothing.
 * @ensures intExpr.expression.accept(this)
 */
public void visit(ExprToIntCast intExpr) {
	if (visited(intExpr)) return;
	intExpr.expression().accept(this);
}
 

/**
 * Visits the given unary integer expression.
 */
public void visit(ExprToIntCast intExpr);
 

/**
 * Visits the given unary integer expression and returns the result.
 *
 * @return the result of visiting <code>intExpr</code>
 */
public I visit(ExprToIntCast intExpr);
 

/**
 * @return true if the given expression should be parenthesized when a child of
 *         a compound parent
 */
private boolean parenthesize(IntExpression child) {
    return !(child instanceof UnaryIntExpression || child instanceof IntConstant || child instanceof ExprToIntCast);
}
 

public void visit(ExprToIntCast intExpr) { visit(intExpr, intExpr.op(), intExpr.expression()); }