/* Copyright 2013 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the <code>PPB_VarArray</code> struct providing
* a way to interact with array vars.
*/
label Chrome {
M29 = 1.0
};
[macro="PPB_VAR_ARRAY_INTERFACE"]
interface PPB_VarArray {
/**
* Creates an array var, i.e., a <code>PP_Var</code> with type set to
* <code>PP_VARTYPE_ARRAY</code>. The array length is set to 0.
*
* @return An empty array var, whose reference count is set to 1 on behalf of
* the caller.
*/
PP_Var Create();
/**
* Gets an element from the array.
*
* @param[in] array An array var.
* @param[in] index An index indicating which element to return.
*
* @return The element at the specified position. The reference count of the
* element returned is incremented on behalf of the caller. If
* <code>index</code> is larger than or equal to the array length, an
* undefined var is returned.
*/
PP_Var Get([in] PP_Var array, [in] uint32_t index);
/**
* Sets the value of an element in the array.
*
* @param[in] array An array var.
* @param[in] index An index indicating which element to modify. If
* <code>index</code> is larger than or equal to the array length, the length
* is updated to be <code>index</code> + 1. Any position in the array that
* hasn't been set before is set to undefined, i.e., <code>PP_Var</code> of
* type <code>PP_VARTYPE_UNDEFINED</code>.
* @param[in] value The value to set. The array holds a reference to it on
* success.
*
* @return A <code>PP_Bool</code> indicating whether the operation succeeds.
*/
PP_Bool Set([in] PP_Var array, [in] uint32_t index, [in] PP_Var value);
/**
* Gets the array length.
*
* @param[in] array An array var.
*
* @return The array length.
*/
uint32_t GetLength([in] PP_Var array);
/**
* Sets the array length.
*
* @param[in] array An array var.
* @param[in] length The new array length. If <code>length</code> is smaller
* than its current value, the array is truncated to the new length; any
* elements that no longer fit are removed and the references to them will be
* released. If <code>length</code> is larger than its current value,
* undefined vars are appended to increase the array to the specified length.
*
* @return A <code>PP_Bool</code> indicating whether the operation succeeds.
*/
PP_Bool SetLength([in] PP_Var array, [in] uint32_t length);
};
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