JSDoc: Class: Wasi

Constructor

new Wasi(env)

Create a Wasi class

Parameters:

Name	Type	Description
`env`	Object.<string, string>	The environment variables

Source:

wasi.js, line 40

Classes

Wasi

Members

functionRegistry

Properties:

Name	Type	Attributes	Description
`functionRegistry`	FunctionRegistry	<optional>	The function registry

Source:

wasi.js, line 56

instance

Properties:

Name	Type	Attributes	Description
`instance`	WebAssembly.Instance	<optional>	The WebAssembly instance.

Source:

wasi.js, line 46

memoryManager

Properties:

Name	Type	Attributes	Description
`memoryManager`	MemoryManager	<optional>	The WebAssembly memory manager

Source:

wasi.js, line 51

Methods

environ_get(environ, environBuf)

Get the environment variables.

Parameters:

Name	Type	Description
`environ`	number	The environment
`environBuf`	number	The address of the buffer

Source:

wasi.js, line 133

environ_sizes_get(environCount, environBufSize)

Get the size required to store the environment variables.

Parameters:

Name	Type	Description
`environCount`	number	The number of environment variables
`environBufSize`	number	The size of the environment variables buffer

Source:

wasi.js, line 154

fd_close(fd)

Open the file descriptor

Parameters:

Name	Type	Description
`fd`	number	The file descriptor

Source:

wasi.js, line 183

fd_fdstat_get(fd, stat)

Get the status of a file descriptor

Parameters:

Name	Type	Description
`fd`	number	The file descriptor
`stat`	number	The status

Source:

wasi.js, line 242

fd_seek(fd, offset_low, offset_high, whence, newOffset)

Seek

Parameters:

Name	Type	Description
`fd`	number	The file descriptor
`offset_low`	number	The low offset
`offset_high`	number	The high offset
`whence`	number	Whence
`newOffset`	number	The new offset

Source:

wasi.js, line 195

fd_write(fd, iovs, iovsLen, nwritten)

Write to a file descriptor

Parameters:

Name	Type	Description
`fd`	number	The file descriptor
`iovs`	number	The address of the scatter vector
`iovsLen`	number	The length of the scatter vector
`nwritten`	number	The number of items written

Source:

wasi.js, line 206

init(instance)

Initialize the WASI class with a WebAssembly instance.

Parameters:

Name	Type	Description
`instance`	WebAssembly.Instance	A WebAssembly instance

Source:

wasi.js, line 75

invoke(name, …values) → {*}

Invoke a function with defaults

Parameters:

Name	Type	Attributes	Description
`name`	string \| symbol		The function name
`values`	any	<repeatable>	The function values

Source:

wasi.js, line 124

Returns:

Type: *

invokeExplicitFunction(name, values, mangledArgs) → {*}

Invoke a function given an explicit argument mangle

Parameters:

Name	Type	Description
`name`	string \| symbol	The function name
`values`	Array.<any>	The values with which to call the function
`mangledArgs`	string	The mangled arguments

Source:

wasi.js, line 113

Returns:

The return value if any

Type: *

invokeImpliedFunction(name, values, options) → {*}

Invoke a function implied by the arguments

Parameters:

Name	Type	Description
`name`	string \| symbol	The function name
`values`	Array.<any>	The values with which to call the function
`options`	object	Name mangling options

Source:

wasi.js, line 101

Returns:

The return value if any

Type: *

proc_exit(rval)

This gets called on exit to stop the running program. We don't have anything to stop!

Parameters:

Name	Type	Description
`rval`	number	The return value

Source:

wasi.js, line 175

registerFunction(name, prototype, callback)

Parameters:

Name	Type	Description
`name`	string \| symbol	The function name
`prototype`	FunctionPrototype	The function prototype
`callback`	wasmCallback	The wasm callback

Source:

wasi.js, line 90