ed068597cd
This adds the 1.19.0-rc2. in the testing matrix. This also formats the Godocs across the codebase, as Go 1.19 has started auto-formatting Godoc. https://github.com/tetratelabs/wazero/issues/426 Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package wazero
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import (
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"context"
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_ "embed"
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"fmt"
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"log"
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)
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// addWasm was generated by the following:
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//
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// cd examples/basic/testdata/testdata; wat2wasm --debug-names add.wat
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//
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//go:embed examples/basic/testdata/add.wasm
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var addWasm []byte
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// This is an example of how to use WebAssembly via adding two numbers.
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//
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// See https://github.com/tetratelabs/wazero/tree/main/examples for more.
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func Example() {
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// Choose the context to use for function calls.
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ctx := context.Background()
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// Create a new WebAssembly Runtime.
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r := NewRuntime()
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// Add a module to the runtime named "wasm/math" which exports one function
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// "add", implemented in WebAssembly.
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mod, err := r.InstantiateModuleFromBinary(ctx, addWasm)
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if err != nil {
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log.Panicln(err)
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}
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defer mod.Close(ctx)
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// Get a function that can be reused until its module is closed:
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add := mod.ExportedFunction("add")
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x, y := uint64(1), uint64(2)
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results, err := add.Call(ctx, x, y)
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if err != nil {
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log.Panicln(err)
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}
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fmt.Printf("%s: %d + %d = %d\n", mod.Name(), x, y, results[0])
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// Output:
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// wasm/math: 1 + 2 = 3
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}
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