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use crate::vmcontext::{
VMContext, VMFunctionBody, VMGlobalDefinition, VMMemoryDefinition, VMSharedSignatureIndex,
VMTableDefinition,
};
use wasmtime_environ::wasm::Global;
use wasmtime_environ::{MemoryPlan, TablePlan};
/// The value of an export passed from one instance to another.
#[derive(Debug, Clone)]
pub enum Export {
/// A function export value.
Function(ExportFunction),
/// A table export value.
Table(ExportTable),
/// A memory export value.
Memory(ExportMemory),
/// A global export value.
Global(ExportGlobal),
}
/// A function export value.
#[derive(Debug, Clone)]
pub struct ExportFunction {
/// The address of the native-code function.
pub address: *const VMFunctionBody,
/// Pointer to the containing `VMContext`.
pub vmctx: *mut VMContext,
/// The function signature declaration, used for compatibilty checking.
///
/// Note that this indexes within the module associated with `vmctx`.
pub signature: VMSharedSignatureIndex,
}
impl From<ExportFunction> for Export {
fn from(func: ExportFunction) -> Export {
Export::Function(func)
}
}
/// A table export value.
#[derive(Debug, Clone)]
pub struct ExportTable {
/// The address of the table descriptor.
pub definition: *mut VMTableDefinition,
/// Pointer to the containing `VMContext`.
pub vmctx: *mut VMContext,
/// The table declaration, used for compatibilty checking.
pub table: TablePlan,
}
impl From<ExportTable> for Export {
fn from(func: ExportTable) -> Export {
Export::Table(func)
}
}
/// A memory export value.
#[derive(Debug, Clone)]
pub struct ExportMemory {
/// The address of the memory descriptor.
pub definition: *mut VMMemoryDefinition,
/// Pointer to the containing `VMContext`.
pub vmctx: *mut VMContext,
/// The memory declaration, used for compatibilty checking.
pub memory: MemoryPlan,
}
impl From<ExportMemory> for Export {
fn from(func: ExportMemory) -> Export {
Export::Memory(func)
}
}
/// A global export value.
#[derive(Debug, Clone)]
pub struct ExportGlobal {
/// The address of the global storage.
pub definition: *mut VMGlobalDefinition,
/// Pointer to the containing `VMContext`.
pub vmctx: *mut VMContext,
/// The global declaration, used for compatibilty checking.
pub global: Global,
}
impl From<ExportGlobal> for Export {
fn from(func: ExportGlobal) -> Export {
Export::Global(func)
}
}