Add PPB_VarArray_Dev support - part 1.

ppapi/c/dev/ppb_var_array_dev.h

+/* Copyright (c) 2013 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* From dev/ppb_var_array_dev.idl modified Thu Mar 14 13:41:46 2013. */
+
+#ifndef PPAPI_C_DEV_PPB_VAR_ARRAY_DEV_H_
+#define PPAPI_C_DEV_PPB_VAR_ARRAY_DEV_H_
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_macros.h"
+#include "ppapi/c/pp_stdint.h"
+#include "ppapi/c/pp_var.h"
+
+#define PPB_VAR_ARRAY_DEV_INTERFACE_0_1 "PPB_VarArray(Dev);0.1"
+#define PPB_VAR_ARRAY_DEV_INTERFACE PPB_VAR_ARRAY_DEV_INTERFACE_0_1
+
+/**
+ * @file
+ * This file defines the <code>PPB_VarArray_Dev</code> struct providing
+ * a way to interact with array vars.
+ */
+
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+struct PPB_VarArray_Dev_0_1 {
+  /**
+   * 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.
+   */
+  struct PP_Var (*Create)(void);
+  /**
+   * 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 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.
+   */
+  struct PP_Var (*Get)(struct PP_Var array, 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)(struct PP_Var array, uint32_t index, struct PP_Var value);
+  /**
+   * Gets the array length.
+   *
+   * @param[in] array An array var.
+   *
+   * @return The array length.
+   */
+  uint32_t (*GetLength)(struct 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. 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)(struct PP_Var array, uint32_t length);
+};
+
+typedef struct PPB_VarArray_Dev_0_1 PPB_VarArray_Dev;
+/**
+ * @}
+ */
+
+#endif  /* PPAPI_C_DEV_PPB_VAR_ARRAY_DEV_H_ */
+