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example: adds missing error check (#727)

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Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
This commit is contained in:
Takeshi Yoneda
2022-07-30 11:34:33 +09:00
committed by GitHub
parent b18b36c173
commit c50ed2c263
1 changed files with 9 additions and 3 deletions
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12
examples/multiple-results/multiple-results.go
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@@ -96,7 +96,7 @@ func resultOffsetWasmFunctions(ctx context.Context, r wazero.Runtime) (api.Modul
var multiValueWasm []byte
// multiValueWasmFunctions are the WebAssembly equivalent of the Go-defined
// multiValueHostFunctions. The source is in testdata/multi-value.wat
// multiValueHostFunctions. The source is in testdata/multi_value.wat
func multiValueWasmFunctions(ctx context.Context, r wazero.Runtime) (api.Module, error) {
return r.InstantiateModuleFromBinary(ctx, multiValueWasm)
}
@@ -108,13 +108,19 @@ func multiValueWasmFunctions(ctx context.Context, r wazero.Runtime) (api.Module,
//go:embed testdata/multi_value_imported.wasm
var multiValueFromImportedHostWasm []byte
// multiValueFromImportedHostWasmFunctions return the WebAssembly which imports the Go-defined "get_age" function.
// The imported "get_age" function returns multiple results. The source is in testdata/multi_value_imported.wat
func multiValueFromImportedHostWasmFunctions(ctx context.Context, r wazero.Runtime) (api.Module, error) {
r.NewModuleBuilder("multi-value/host").
// Instantiate the host module with the exported `get_age` function which returns multiple results.
if _, err := r.NewModuleBuilder("multi-value/host").
// Define a function that returns two results
ExportFunction("get_age", func() (age uint64, errno uint32) {
age = 37
errno = 0
return
}).Instantiate(ctx, r)
}).Instantiate(ctx, r); err != nil {
return nil, err
}
// Then, creates the module which imports the `get_age` function from the `multi-value/host` module above.
return r.InstantiateModuleFromBinary(ctx, multiValueFromImportedHostWasm)
}