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Add arrays examples
Signed-off-by: Glenn Lewis <[email protected]>
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‎assets/simulatedExtismSdk.js

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@@ -125,6 +125,7 @@ export const importObject = {
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log_error: (offset) => console.error(`log_error: ${decodeOffset(offset)}`),
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log_warn: (offset) => console.warn(`log_warn: ${decodeOffset(offset)}`),
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output_set: (offset) => console.log(decodeOffset(offset)),
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error_set: (offset) => console.error(decodeOffset(offset)),
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store_u8: (offsetBigInt, byte) => {
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const offset = Number(offsetBigInt)
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Object.keys(fakeAlloc.buffers).forEach((key) => {

‎examples/arrays/README.md

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# examples/arrays
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The `arrays.wasm` plugin can be run from the top-level of the repo by
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typing:
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```bash
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$ ./build.sh
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$ ./scripts/python-server.sh
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```
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Then open your browser window to:
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http://localhost:8080/examples/arrays

‎examples/arrays/arrays.mbt

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/// `progressive_sum_ints` tests passing arrays of ints.
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pub fn progressive_sum_ints() -> Int {
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let s = @host.input_string()
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let jv = try {
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@json.parse(s)!
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} catch {
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e => {
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@host.set_error("unable to parse input: \(e)")
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return 1 // failure
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}
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}
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//
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let ints = match jv.as_array() {
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Some(arr) => arr.map(fn(jv) { jv.as_number().unwrap().to_int() })
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_ => {
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@host.set_error("could not parse array")
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return 1 // failure
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}
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}
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let mut sum = 0
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ints.eachi(
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fn(index, value) {
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sum += value
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ints[index] = sum
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},
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)
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//
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let jv = @jsonutil.to_json(ints)
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@host.output_json_value(jv)
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0 // success
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}
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/// `progressive_sum_floats` tests passing arrays of floats.
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pub fn progressive_sum_floats() -> Int {
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let s = @host.input_string()
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let jv = try {
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@json.parse(s)!
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} catch {
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e => {
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@host.set_error("unable to parse input: \(e)")
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return 1 // failure
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}
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}
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//
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let floats = match jv.as_array() {
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Some(arr) => arr.map(fn(jv) { jv.as_number().unwrap() })
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_ => {
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@host.set_error("could not parse array")
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return 1 // failure
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}
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}
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let mut sum = 0.0
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floats.eachi(
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fn(index, value) {
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sum += value
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floats[index] = sum
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},
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)
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//
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let jv = @jsonutil.to_json(floats)
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@host.output_json_value(jv)
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0 // success
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}
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/// `progressive_concat_strings` tests passing arrays of strings.
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pub fn progressive_concat_strings() -> Int {
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let s = @host.input_string()
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let jv = try {
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@json.parse(s)!
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} catch {
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e => {
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@host.set_error("unable to parse input: \(e)")
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return 1 // failure
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}
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}
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//
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let strings = match jv.as_array() {
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Some(arr) => arr.map(fn(jv) { jv.as_string().unwrap() })
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_ => {
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@host.set_error("could not parse array")
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return 1 // failure
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}
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}
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let parts = []
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strings.eachi(
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fn(index, value) {
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parts.push(value)
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strings[index] = parts.join("|")
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},
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)
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//
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let jv = @jsonutil.to_json(strings)
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@host.output_json_value(jv)
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0 // success
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}

‎examples/arrays/index.html

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<!DOCTYPE html>
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<html>
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<head></head>
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<body>
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<script type="module">
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import { configs, flush, importObject, inputString } from '/assets/simulatedExtismSdk.js'
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const wasmUnderTest = '/target/wasm/release/build/examples/arrays/arrays.wasm'
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// WebAssembly.instantiateStreaming(fetch("/target/wasm-gc/release/build/examples/arrays/arrays.wasm"), importObject).then(
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WebAssembly.instantiateStreaming(fetch(wasmUnderTest), importObject).then(
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(obj) => {
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console.log('Using simulated Extism SDK...')
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console.log('ints:')
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inputString.value = '[0,1,2,3,4,5,6]'
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obj.instance.exports['progressive_sum_ints']()
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console.log('floats:')
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inputString.value = '[0,0.1,0.2,0.3,0.4,0.5,0.6]'
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obj.instance.exports['progressive_sum_floats']()
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console.log('strings:')
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inputString.value = '["0","1","2","3","4","5","6"]'
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obj.instance.exports['progressive_concat_strings']()
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flush()
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}
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)
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// Next, use the official Extism JavaScript SDK:
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// Read the JS SDK docs at: https://extism.github.io/js-sdk/
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const extism = await import('https://esm.sh/@extism/extism')
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const plugin = await extism.createPlugin(
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fetch(wasmUnderTest),
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{ useWasi: true }
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)
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console.log('Using official Extism JavaScript SDK...')
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console.log('ints:')
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let out = await plugin.call('progressive_sum_ints', '[0,1,2,3,4,5,6]')
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console.log(out.text())
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console.log('floats:')
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out = await plugin.call('progressive_sum_floats', '[0,0.1,0.2,0.3,0.4,0.5,0.6]')
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console.log(out.text())
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console.log('strings:')
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out = await plugin.call('progressive_concat_strings', '["0","1","2","3","4","5","6"]')
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console.log(out.text())
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</script>
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</body>
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</html>

‎examples/arrays/moon.pkg.json

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{
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"import": [
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"extism/moonbit-pdk/pdk/config",
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"extism/moonbit-pdk/pdk/host",
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"extism/moonbit-pdk/pdk/var",
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{
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"path": "gmlewis/json",
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"alias": "jsonutil"
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}
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],
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"link": {
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"wasm": {
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"exports": [
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"progressive_sum_ints",
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"progressive_sum_floats",
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"progressive_concat_strings"
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],
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"export-memory-name": "memory"
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},
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"wasm-gc": {
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"exports": [
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"progressive_sum_ints",
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"progressive_sum_floats",
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"progressive_concat_strings"
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],
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"export-memory-name": "memory"
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}
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}
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}

‎run.sh

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./scripts/count-vowels.sh 'Once upon a dream' && echo && echo
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./scripts/http-get.sh && echo && echo
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./scripts/kitchen-sink.sh 'Testing the kitchen sink' && echo && echo
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./scripts/arrays-ints.sh '[0,1,2,3,4,5,6]' && echo && echo
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./scripts/arrays-floats.sh '[0,0.1,0.2,0.3,0.4,0.5,0.6]' && echo && echo
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./scripts/arrays-strings.sh '["0","1","2","3","4","5","6"]' && echo && echo

‎scripts/arrays-floats.sh

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#!/bin/bash -ex
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extism call target/wasm/release/build/examples/arrays/arrays.wasm progressive_sum_floats --wasi --input "$@"

‎scripts/arrays-ints.sh

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#!/bin/bash -ex
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extism call target/wasm/release/build/examples/arrays/arrays.wasm progressive_sum_ints --wasi --input "$@"

‎scripts/arrays-strings.sh

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#!/bin/bash -ex
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extism call target/wasm/release/build/examples/arrays/arrays.wasm progressive_concat_strings --wasi --input "$@"

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