wasm-tools 1.248.0

CLI tools for interoperating with WebAssembly files
Documentation
;; RUN: wast --assert default --snapshot tests/snapshots % -f cm-async

;; stream.new
(component
  (core module $m
    (import "" "stream.new" (func $stream-new (result i64)))
  )
  (type $stream-type (stream u8))
  (core func $stream-new (canon stream.new $stream-type))
  (core instance $i (instantiate $m (with "" (instance (export "stream.new" (func $stream-new))))))
)

;; stream.new; incorrect type
(assert_invalid
  (component
    (core module $m
      (import "" "stream.new" (func $stream-new (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-new (canon stream.new $stream-type))
    (core instance $i (instantiate $m (with "" (instance (export "stream.new" (func $stream-new))))))
  )
  "type mismatch for export `stream.new` of module instantiation argument ``"
)

;; stream.read
(component
  (core module $libc (memory (export "memory") 1))
  (core instance $libc (instantiate $libc))
  (core module $m
    (import "" "stream.read" (func $stream-read (param i32 i32 i32) (result i32)))
  )
  (type $stream-type (stream u8))
  (core func $stream-read (canon stream.read $stream-type async (memory $libc "memory")))
  (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
)

;; stream.read; no payload
(component
  (core module $m
    (import "" "stream.read" (func $stream-read (param i32 i32 i32) (result i32)))
  )
  (type $stream-type (stream))
  (core func $stream-read (canon stream.read $stream-type async))
  (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
)

;; stream.read; with realloc
(component
  (core module $libc
    (func (export "realloc") (param i32 i32 i32 i32) (result i32) unreachable)
    (memory (export "memory") 1)
  )
  (core instance $libc (instantiate $libc))
  (core module $m
    (import "" "stream.read" (func $stream-read (param i32 i32 i32) (result i32)))
  )
  (type $stream-type (stream string))
  (core func $stream-read (canon stream.read $stream-type async (memory $libc "memory") (realloc (func $libc "realloc"))))
  (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
)

;; stream.read; incorrect type
(assert_invalid
  (component
    (core module $libc (memory (export "memory") 1))
    (core instance $libc (instantiate $libc))
    (core module $m
      (import "" "stream.read" (func $stream-read (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-read (canon stream.read $stream-type async (memory $libc "memory")))
    (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
  )
  "type mismatch for export `stream.read` of module instantiation argument ``"
)

;; stream.read; incorrect type argument
(assert_invalid
  (component
    (core module $libc (memory (export "memory") 1))
    (core instance $libc (instantiate $libc))
    (core module $m
      (import "" "stream.read" (func $stream-read (param i32 i32 i32) (result i32)))
    )
    (type $string-type string)
    (core func $stream-read (canon stream.read $string-type async (memory $libc "memory")))
    (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
  )
  "`stream.read` requires a stream type"
)

;; stream.read; missing realloc
(assert_invalid
  (component
    (core module $libc (memory (export "memory") 1))
    (core instance $libc (instantiate $libc))
    (core module $m
      (import "" "stream.read" (func $stream-read (param i32 i32 i32) (result i32)))
    )
    (type $stream-type (stream string))
    (core func $stream-read (canon stream.read $stream-type async (memory $libc "memory")))
    (core instance $i (instantiate $m (with "" (instance (export "stream.read" (func $stream-read))))))
  )
  "canonical option `realloc` is required"
)

;; stream.write
(component
  (core module $libc (memory (export "memory") 1))
  (core instance $libc (instantiate $libc))
  (core module $m
    (import "" "stream.write" (func $stream-write (param i32 i32 i32) (result i32)))
  )
  (type $stream-type (stream u8))
  (core func $stream-write (canon stream.write $stream-type async (memory $libc "memory")))
  (core instance $i (instantiate $m (with "" (instance (export "stream.write" (func $stream-write))))))
)

;; stream.write; no payload
(component
  (core module $m
    (import "" "stream.write" (func $stream-write (param i32 i32 i32) (result i32)))
  )
  (type $stream-type (stream))
  (core func $stream-write (canon stream.write $stream-type async))
  (core instance $i (instantiate $m (with "" (instance (export "stream.write" (func $stream-write))))))
)

;; stream.write; incorrect type
(assert_invalid
  (component
    (core module $libc (memory (export "memory") 1))
    (core instance $libc (instantiate $libc))
    (core module $m
      (import "" "stream.write" (func $stream-write (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-write (canon stream.write $stream-type async (memory $libc "memory")))
    (core instance $i (instantiate $m (with "" (instance (export "stream.write" (func $stream-write))))))
  )
  "type mismatch for export `stream.write` of module instantiation argument ``"
)

;; stream.cancel-read
(assert_invalid
  (component
    (core module $m
      (import "" "stream.cancel-read" (func $stream-cancel-read (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-cancel-read (canon stream.cancel-read $stream-type async))
    (core instance $i (instantiate $m (with "" (instance (export "stream.cancel-read" (func $stream-cancel-read))))))
  )
  "requires the component model more async builtins feature")

;; stream.drop-readable
(component
  (core module $m
    (import "" "stream.drop-readable" (func $stream-drop-readable (param i32)))
  )
  (type $stream-type (stream u8))
  (core func $stream-drop-readable (canon stream.drop-readable $stream-type))
  (core instance $i (instantiate $m (with "" (instance (export "stream.drop-readable" (func $stream-drop-readable))))))
)

;; stream.drop-readable; incorrect type
(assert_invalid
  (component
    (core module $m
      (import "" "stream.drop-readable" (func $stream-drop-readable (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-drop-readable (canon stream.drop-readable $stream-type))
    (core instance $i (instantiate $m (with "" (instance (export "stream.drop-readable" (func $stream-drop-readable))))))
  )
  "type mismatch for export `stream.drop-readable` of module instantiation argument ``"
)

;; stream.cancel-write
(assert_invalid
  (component
    (core module $m
      (import "" "stream.cancel-write" (func $stream-cancel-write (param i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-cancel-write (canon stream.cancel-write $stream-type async))
    (core instance $i (instantiate $m (with "" (instance (export "stream.cancel-write" (func $stream-cancel-write))))))
  )
  "requires the component model more async builtins feature")

;; stream.drop-writable
(component
  (core module $m
    (import "" "stream.drop-writable" (func $stream-drop-writable (param i32)))
  )
  (type $stream-type (stream u8))
  (core func $stream-drop-writable (canon stream.drop-writable $stream-type))
  (core instance $i (instantiate $m (with "" (instance (export "stream.drop-writable" (func $stream-drop-writable))))))
)

;; stream.drop-writable; incorrect type
(assert_invalid
  (component
    (core module $m
      (import "" "stream.drop-writable" (func $stream-drop-writable (param i32 i32) (result i32)))
    )
    (type $stream-type (stream u8))
    (core func $stream-drop-writable (canon stream.drop-writable $stream-type))
    (core instance $i (instantiate $m (with "" (instance (export "stream.drop-writable" (func $stream-drop-writable))))))
  )
  "type mismatch for export `stream.drop-writable` of module instantiation argument ``"
)

;; stream<char> isn't valid yet
(assert_invalid
  (component (type (stream char)))
  "`stream<char>` is not valid at this time, use `stream<u8>` with a defined by encoding instead for now"
)
(assert_invalid
  (component (type $t char) (type (stream $t)))
  "`stream<char>` is not valid at this time, use `stream<u8>` with a defined by encoding instead for now"
)
(assert_invalid
  (component (type (func (param "x" (stream char)))))
  "`stream<char>` is not valid at this time, use `stream<u8>` with a defined by encoding instead for now"
)