# [−] [src] Struct wasmi::TableInstance

    pub struct TableInstance { /* fields omitted */ }

Runtime representation of a table.

A table is a array of untyped functions. It allows wasm code to call functions indirectly through a dynamic index into a table. For example, this allows emulating function pointers by way of table indices.

Table is created with an initial size but can be grown dynamically via `grow` method. Growth can be limited by an optional maximum size.

In future, a table might be extended to be able to hold not only functions but different types.

## Methods

### `impl TableInstance` [src]

#### `pub fn alloc(
initial_size: u32,
maximum_size: Option<u32>
) -> Result<TableRef, Error>` [src]

Allocate a table instance.

The table allocated with initial size, specified by `initial_size`. Maximum size can be specified by `maximum_size`.

All table elements are allocated uninitialized.

# Errors

Returns `Err` if `initial_size` is greater than `maximum_size`.

#### `pub fn initial_size(&self) -> u32` [src]

Returns size this table was created with.

#### `pub fn maximum_size(&self) -> Option<u32>` [src]

Returns maximum size `TableInstance` can grow to.

#### `pub fn current_size(&self) -> u32` [src]

Returns current size of the table.

#### `pub fn grow(&self, by: u32) -> Result<(), Error>` [src]

Increases the size of the table by given number of elements.

# Errors

Returns `Err` if tried to allocate more elements than permited by limit.

#### `pub fn get(&self, offset: u32) -> Result<Option<FuncRef>, Error>` [src]

Get the specific value in the table

#### `pub fn set(&self, offset: u32, value: Option<FuncRef>) -> Result<(), Error>` [src]

Set the table element to the specified function.

## Trait Implementations

### `impl Debug for TableInstance` [src]

#### `fn fmt(&self, f: &mut Formatter) -> Result` [src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl !Send for TableInstance`

### `impl !Sync for TableInstance`

### `impl Unpin for TableInstance`

### `impl !UnwindSafe for TableInstance`

### `impl !RefUnwindSafe for TableInstance`

## Blanket Implementations

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U` [src]

Performs the conversion.

### `impl<T> From<T> for T` [src]

#### `fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

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