92ba4929e5
This drops the text format (%.wat) and renames InstantiateModuleFromCode to InstantiateModuleFromBinary as it is no longer ambiguous. We decided to stop supporting the text format as it isn't typically used in production, yet costs a lot of work to develop. Given the resources available and the increased work added with WebAssembly 2.0 and soon WASI 2, we can't afford to spend the time on it. The old parser is used only internally and will eventually be moved to its own repository named watzero, possibly towards archival. See #59 Signed-off-by: Adrian Cole <adrian@tetrate.io>
47 lines
1.1 KiB
Go
47 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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// cd examples/basic/testdata/testdata; wat2wasm --debug-names add.wat
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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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