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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.slime;
final class ArrayValue extends Value {
private int capacity = 16;
private int used = 0;
private Value[] values = new Value[capacity];
private final SymbolTable names;
public ArrayValue(SymbolTable names) { this.names = names; }
public final Type type() { return Type.ARRAY; }
public final int children() { return used; }
public final int entries() { return used; }
public final Value entry(int index) {
return (index < used) ? values[index] : NixValue.invalid();
}
public final void accept(Visitor v) { v.visitArray(this); }
public final void traverse(ArrayTraverser at) {
for (int i = 0; i < used; i++) {
at.entry(i, values[i]);
}
}
private void grow() {
Value[] v = values;
capacity = (capacity << 1);
values = new Value[capacity];
System.arraycopy(v, 0, values, 0, used);
}
protected final Value addLeaf(Value value) {
if (used == capacity) {
grow();
}
values[used++] = value;
return value;
}
public final Value addArray() { return addLeaf(new ArrayValue(names)); }
public final Value addObject() { return addLeaf(new ObjectValue(names)); }
}
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