// |jit-test| skip-if: !wasmComponentsEnabled()

// Export a function.
wasmValidateText(`
(component
  (type (func (param "a" s32) (param "b" s32) (result s32)))

  (core module
    (func (export "add_impl") (param i32 i32) (result i32)
      (i32.add (local.get 0) (local.get 1))
    )
  )
  (core instance (instantiate 0))
  (alias core export 0 "add_impl" (core func))
  (func (type 0) (canon lift (core func 0)))
  (export "add" (func 0))
)
`);

// Export a type.
wasmValidateText(`
(component
  (type (record (field "x" f64) (field "y" f64)))
  (export "point" (type 0))
)
`);

// Export a core module.
wasmValidateText(`
(component
  (core module
    (func (export "add") (param i32 i32) (result i32)
      (i32.add (local.get 0) (local.get 1))
    )
  )
  (export "adder" (core module 0))
)
`);

// Export multiple items of different sorts.
wasmValidateText(`
(component
  (core module
    (func (export "add") (param i32 i32) (result i32)
      (i32.add (local.get 0) (local.get 1))
    )
  )
  (core module
    (func (export "sub") (param i32 i32) (result i32)
      (i32.sub (local.get 0) (local.get 1))
    )
  )

  (export "adder" (core module 0))
  (export "subber" (core module 1))
)
`);

// Invalid function index.
wasmFailValidateText(`
(component
  (type (func (param "a" s32) (param "b" s32) (result s32)))

  (core module
    (func (export "add_impl") (param i32 i32) (result i32)
      (i32.add (local.get 0) (local.get 1))
    )
  )
  (core instance (instantiate 0))
  (alias core export 0 "add_impl" (core func))
  (func (type 0) (canon lift (core func 0)))
  (export "add" (func 1))
)
`, /invalid function index 1 for export/);

// Invalid type index.
wasmFailValidateText(`
(component
  (type u32)
  (export "bad" (type 5))
)
`, /invalid type index 5 for export/);

// Invalid core module index.
wasmFailValidateText(`
(component
  (core module)
  (export "bad" (core module 1))
)
`, /invalid core module index 1 for export/);

// ----------------------------------------------------------------------------
// Export name well-formedness

// Valid plain export names.
wasmValidateText(`
(component
  (core module)
  (export "my-module" (core module 0))
)
`);

// Valid interface export name.
// TODO(wasm-cm): Should we support interface names?
wasmFailValidateText(`
(component
  (core module)
  (export "wasi:http/handler" (core module 0))
)
`, /invalid characters in export name/);

// Export name must not be empty.
wasmFailValidateText(`
(component
  (core module)
  (export "" (core module 0))
)
`, /export name cannot be empty/);

// Export name with invalid characters.
wasmFailValidateText(`
(component
  (core module)
  (export "no spaces" (core module 0))
)
`, /invalid characters in export name/);

// Duplicate export names should be rejected.
wasmFailValidateText(`
(component
  (core module)
  (export "same" (core module 0))
  (export "same" (core module 0))
)
`, /not strongly-unique/);

// Export a component - requires nested components (section ID 4) which aren't
// supported, so the component section itself is rejected.
// TODO(wasm-cm)
wasmFailValidateText(`
(component
  (component)
  (export "inner" (component 0))
)
`, /unexpected section ID/);

// Export a component instance - also requires nested components.
// TODO(wasm-cm)
wasmFailValidateText(`
(component
  (component)
  (instance (instantiate 0))
  (export "inst" (instance 0))
)
`, /unexpected section ID/);

// ----------------------------------------------------------------------------
// Integration test

// A complete component exercising types, core modules, instances, aliases,
// canon lift, and exports together.
wasmValidateText(`
(component
  (type (func (param "a" s32) (param "b" s32) (result s32)))

  (core module
    (func (export "add_impl") (param i32 i32) (result i32)
      (i32.add (local.get 0) (local.get 1))
    )
  )
  (core module
    (func (export "sub_impl") (param i32 i32) (result i32)
      (i32.sub (local.get 0) (local.get 1))
    )
  )

  (core instance (instantiate 0))
  (core instance (instantiate 1))

  (alias core export 0 "add_impl" (core func))
  (alias core export 1 "sub_impl" (core func))
  (func (type 0) (canon lift (core func 0)))
  (func (type 0) (canon lift (core func 1)))

  (export "add" (func 0))
  (export "sub" (func 1))
)
`);

// ----------------------------------------------------------------------------
// Index spaces (because unlike in core wasm, component exports add to their
// index spaces just like imports do)

// Exported types add to the type index space
wasmValidateText(`(component
  (type s32)
  (export "t" (type 0)) ;; no identifier, no explicit externdesc
  (type f32)

  ;; There are three types defined now (one by the export), so this is valid
  (type (func (param "x" 2)))

  ;; Validate that the types are what we think they are
  (core module $M
    (func (export "foo") (param f32))
  )
  (core instance $I (instantiate $M))
  (func (type 3) (canon lift (core func $I "foo")))
)`);

// TODO(wasm-cm): Add tests for other index spaces

// ----------------------------------------------------------------------------
// Ascribing other types to exports

// Everything uses structural equality, so a type reference to a primitive is
// equal to a raw primitive.
wasmValidateText(`(component
  (type s32)
  (import "f" (func $f (param "x" 0)))
  (import "g" (func $g (param "x" s32)))

  (export "f" (func $f) (func (param "x" s32)))
  (export "g" (func $g) (func (param "x" 0)))
)`);

wasmValidateText(`(component
  (type s32)
  (type s32)
  (export "t" (type 0) (type (eq 1)))
)`);