[−][src]Trait cranelift_wasm::ModuleEnvironment

pub trait ModuleEnvironment<'data> {
    fn target_config(&self) -> TargetFrontendConfig;

    fn declare_signature(&mut self, sig: Signature);

    fn declare_func_import(
        &mut self, 
        sig_index: SignatureIndex, 
        module: &'data str, 
        field: &'data str
    );

    fn declare_table_import(
        &mut self, 
        table: Table, 
        module: &'data str, 
        field: &'data str
    );

    fn declare_memory_import(
        &mut self, 
        memory: Memory, 
        module: &'data str, 
        field: &'data str
    );

    fn declare_global_import(
        &mut self, 
        global: Global, 
        module: &'data str, 
        field: &'data str
    );

    fn declare_func_type(&mut self, sig_index: SignatureIndex);

    fn declare_table(&mut self, table: Table);

    fn declare_memory(&mut self, memory: Memory);

    fn declare_global(&mut self, global: Global);

    fn declare_func_export(&mut self, func_index: FuncIndex, name: &'data str);

    fn declare_table_export(
        &mut self, 
        table_index: TableIndex, 
        name: &'data str
    );

    fn declare_memory_export(
        &mut self, 
        memory_index: MemoryIndex, 
        name: &'data str
    );

    fn declare_global_export(
        &mut self, 
        global_index: GlobalIndex, 
        name: &'data str
    );

    fn declare_start_func(&mut self, index: FuncIndex);

    fn declare_table_elements(
        &mut self, 
        table_index: TableIndex, 
        base: Option<GlobalIndex>, 
        offset: usize, 
        elements: Box<[FuncIndex]>
    );

    fn define_function_body(
        &mut self, 
        body_bytes: &'data [u8], 
        body_offset: usize
    ) -> WasmResult<()>;

    fn declare_data_initialization(
        &mut self, 
        memory_index: MemoryIndex, 
        base: Option<GlobalIndex>, 
        offset: usize, 
        data: &'data [u8]
    );

    fn reserve_signatures(&mut self, _num: u32) { ... }

    fn reserve_imports(&mut self, _num: u32) { ... }

    fn finish_imports(&mut self) { ... }

    fn reserve_func_types(&mut self, _num: u32) { ... }

    fn reserve_tables(&mut self, _num: u32) { ... }

    fn reserve_memories(&mut self, _num: u32) { ... }

    fn reserve_globals(&mut self, _num: u32) { ... }

    fn reserve_exports(&mut self, _num: u32) { ... }

    fn finish_exports(&mut self) { ... }

    fn reserve_table_elements(&mut self, _num: u32) { ... }

    fn reserve_data_initializers(&mut self, _num: u32) { ... }
}

An object satisfying the ModuleEnvironment trait can be passed as argument to the translate_module function. These methods should not be called by the user, they are only for cranelift-wasm internal use.

Required methods

fn target_config(&self) -> TargetFrontendConfig

Get the information needed to produce Cranelift IR for the current target.

fn declare_signature(&mut self, sig: Signature)

Declares a function signature to the environment.

fn declare_func_import(
    &mut self,
    sig_index: SignatureIndex,
    module: &'data str,
    field: &'data str
)

Declares a function import to the environment.

fn declare_table_import(
    &mut self,
    table: Table,
    module: &'data str,
    field: &'data str
)

Declares a table import to the environment.

fn declare_memory_import(
    &mut self,
    memory: Memory,
    module: &'data str,
    field: &'data str
)

Declares a memory import to the environment.

fn declare_global_import(
    &mut self,
    global: Global,
    module: &'data str,
    field: &'data str
)

Declares a global import to the environment.

fn declare_func_type(&mut self, sig_index: SignatureIndex)

Declares the type (signature) of a local function in the module.

fn declare_table(&mut self, table: Table)

Declares a table to the environment.

fn declare_memory(&mut self, memory: Memory)

Declares a memory to the environment

fn declare_global(&mut self, global: Global)

Declares a global to the environment.

fn declare_func_export(&mut self, func_index: FuncIndex, name: &'data str)

Declares a function export to the environment.

fn declare_table_export(&mut self, table_index: TableIndex, name: &'data str)

Declares a table export to the environment.

fn declare_memory_export(&mut self, memory_index: MemoryIndex, name: &'data str)

Declares a memory export to the environment.

fn declare_global_export(&mut self, global_index: GlobalIndex, name: &'data str)

Declares a global export to the environment.

fn declare_start_func(&mut self, index: FuncIndex)

Declares the optional start function.

fn declare_table_elements(
    &mut self,
    table_index: TableIndex,
    base: Option<GlobalIndex>,
    offset: usize,
    elements: Box<[FuncIndex]>
)

Fills a declared table with references to functions in the module.

fn define_function_body(
    &mut self,
    body_bytes: &'data [u8],
    body_offset: usize
) -> WasmResult<()>

Provides the contents of a function body.

Note there's no reserve_function_bodies function because the number of functions is already provided by reserve_func_types.

fn declare_data_initialization(
    &mut self,
    memory_index: MemoryIndex,
    base: Option<GlobalIndex>,
    offset: usize,
    data: &'data [u8]
)

Fills a declared memory with bytes at module instantiation.

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Provided methods

fn reserve_signatures(&mut self, _num: u32)

Provides the number of signatures up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_imports(&mut self, _num: u32)

Provides the number of imports up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn finish_imports(&mut self)

Notifies the implementation that all imports have been declared.

fn reserve_func_types(&mut self, _num: u32)

Provides the number of defined functions up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_tables(&mut self, _num: u32)

Provides the number of defined tables up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_memories(&mut self, _num: u32)

Provides the number of defined memories up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_globals(&mut self, _num: u32)

Provides the number of defined globals up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_exports(&mut self, _num: u32)

Provides the number of exports up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn finish_exports(&mut self)

Notifies the implementation that all exports have been declared.

fn reserve_table_elements(&mut self, _num: u32)

Provides the number of element initializers up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

fn reserve_data_initializers(&mut self, _num: u32)

Provides the number of data initializers up front. By default this does nothing, but implementations can use this to preallocate memory if desired.

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Implementors

impl<'data> ModuleEnvironment<'data> for DummyEnvironment[src]

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