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/* Copyright (c) 2011 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.
*/
/* This file defines the API for handling the passing of data types between
* your module and the page.
*/
/* PP_VarType is an enumeration of the different types that can be contained
* within a PP_VAR structure.
*/
enum PP_VarType {
PP_VARTYPE_UNDEFINED = 0,
PP_VARTYPE_NULL = 1,
PP_VARTYPE_BOOL = 2,
PP_VARTYPE_INT32 = 3,
PP_VARTYPE_DOUBLE = 4,
PP_VARTYPE_STRING = 5,
PP_VARTYPE_OBJECT = 6
};
/* The value of a Var. */
[union] struct PP_VarValue {
/* Value if type is PP_VARTYPE_BOOL. */
PP_Bool as_bool;
/* Value if type is PP_VARTYPE_INT32. */
int32_t as_int;
/* Value if type is PP_VARTYPE_DOUBLE. */
double_t as_double;
/* Internal ID for strings and objects. The identifier is an opaque handle
* assigned by the browser to the plugin. It is guaranteed never to be 0,
* so a plugin can initialize this ID to 0 to indicate a "NULL handle."
*/
int64_t as_id;
};
/* The PP_VAR struct is a variant data type and can contain any
* value of one of the types named in the PP_VarType enum. This structure is
* for passing data between native code which can be strongly typed and the
* browser (JavaScript) which isn't strongly typed.
*
* JavaScript has a "number" type for holding a number, and does not
* differentiate between floating point and integer numbers. The
* JavaScript operations will try to optimize operations by using
* integers when possible, but could end up with doubles. Therefore,
* you can't assume a numeric PP_Var will be the type you expect.
* Your code should be capable of handling either int32_t or double for
* numeric PP_Vars sent from JavaScript.
*/
[passByValue] struct PP_Var {
/* Type. */
PP_VarType type;
/* Type-dependent value. */
PP_VarValue value;
};
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