Struct wasmtime_environ::ModuleEnvironment

pub struct ModuleEnvironment<'data, 'module> {
    pub isa: &'module TargetIsa,
    pub module: &'module mut Module,
    pub lazy: LazyContents<'data>,
}

Object containing the standalone environment information. To be passed after creation as argument to compile_module.

Fields

isa: &'module TargetIsa

Compilation setting flags.

module: &'module mut Module

Module information.

lazy: LazyContents<'data>

References to information to be decoded later.

Methods

impl<'data, 'module> ModuleEnvironment<'data, 'module>

pub fn new(isa: &'module TargetIsa, module: &'module mut Module) -> Self

Allocates the enironment data structures with the given isa.

pub fn translate(     self,     data: &'data [u8] ) -> WasmResult<ModuleTranslation<'data, 'module>>

Translate the given wasm module data using this environment. This consumes the ModuleEnvironment with its mutable reference to the Module and produces a ModuleTranslation with an immutable reference to the Module (which has become fully populated).

Trait Implementations

impl<'data, 'module> ModuleEnvironment<'data> for ModuleEnvironment<'data, 'module>

This trait is useful for translate_module because it tells how to translate enironment-dependent wasm instructions. These functions should not be called by the user.

fn get_func_name(&self, func_index: FunctionIndex) -> ExternalName

Return the name for the given function index.

fn flags(&self) -> &Flags

Get the flags for the current compilation.

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

Declares a function signature to the environment.

fn get_signature(&self, sig_index: SignatureIndex) -> &Signature

Return the signature with the given index.

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

Declares a function import to the environment.

fn get_num_func_imports(&self) -> usize

Return the number of imported funcs.

fn declare_func_type(&mut self, sig_index: SignatureIndex)

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

fn get_func_type(&self, func_index: FunctionIndex) -> SignatureIndex

Return the signature index for the given function index.

fn declare_global(&mut self, global: Global)

Declares a global to the environment.

fn get_global(&self, global_index: GlobalIndex) -> &Global

Return the global for the given global index.

fn declare_table(&mut self, table: Table)

Declares a table to the environment.

fn declare_table_elements(     &mut self,     table_index: TableIndex,     base: Option<GlobalIndex>,     offset: usize,     elements: Vec<FunctionIndex> )

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

fn declare_memory(&mut self, memory: Memory)

Declares a memory to the environment

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.

fn declare_func_export(&mut self, func_index: FunctionIndex, name: &str)

Declares a function export to the environment.

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

Declares a table export to the environment.

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

Declares a memory export to the environment.

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

Declares a global export to the environment.

fn declare_start_func(&mut self, func_index: FunctionIndex)

Declares a start function.

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

Provides the contents of a function body.