add wasm

blackchip-org · Aug 3, 2024 · 70613b8 · 70613b8
1 parent efdb60d
commit 70613b8
Show file tree

Hide file tree

Showing 8 changed files with 1,080 additions and 0 deletions.
diff --git a/cmd/server/main.go b/cmd/server/main.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"net/http"
+)
+
+var addr = ":9090"
+
+func main() {
+	fmt.Printf("listening on %v\n", addr)
+	err := http.ListenAndServe(addr, http.FileServer(http.Dir("web")))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: unable to start server: %v\n", err)
+		os.Exit(1)
+	}
+}
diff --git a/cmd/wasm/main.go b/cmd/wasm/main.go
@@ -0,0 +1,150 @@
+//go:build js
+
+package main
+
+import (
+	"syscall/js"
+
+	"github.com/blackchip-org/zc/v6"
+	"github.com/blackchip-org/zc/v6/app"
+	"github.com/blackchip-org/zc/v6/app/repl"
+)
+
+var (
+	c *app.Calc
+	r *repl.Repl
+)
+
+func zcCommonPrefix() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		if len(args) != 1 {
+			panic("zcCommonPrefix: invalid number of arguments")
+		}
+		jsValues := args[0]
+		var outValues []string
+		for i := 0; i < jsValues.Length(); i++ {
+			outValues = append(outValues, jsValues.Index(i).String())
+		}
+		common := repl.CommonPrefix(outValues)
+		return common
+	})
+}
+
+func zcEval() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		in := args[0].String()
+		r.Eval(in)
+		var err string
+		var stack []any
+
+		if r.Error() != nil {
+			err = r.Error().Error()
+		}
+
+		items := c.Items()
+		for _, item := range items {
+			stack = append(stack, map[string]any{
+				"value": valueOf(item),
+				"label": item.Label,
+				"unit":  item.Unit,
+			})
+		}
+		return map[string]any{
+			"stack":  stack,
+			"notice": r.Notice(),
+			"error":  err,
+		}
+	})
+}
+
+func zcStackLen() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		return c.Len()
+	})
+}
+
+func zcStack() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		var stack []any
+		for _, item := range c.Items() {
+			stack = append(stack, map[string]any{
+				"value": valueOf(item),
+				"label": item.Label,
+				"unit":  item.Unit,
+			})
+		}
+		return stack
+	})
+}
+
+func zcOpNames() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		var names []any
+		for _, n := range c.Catalog.OpNames() {
+			names = append(names, n)
+		}
+		return names
+	})
+}
+
+func zcSetStack() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		if len(args) != 1 {
+			panic("zcSetStack: invalid number of arguments")
+		}
+		jsStack := args[0]
+		c.SetItems([]zc.Item{})
+		for i := 0; i < jsStack.Length(); i++ {
+			item := jsStack.Index(i)
+			val := item.Get("value")
+			zc.String.Push(c, val.String())
+		}
+		return nil
+	})
+}
+
+func zcQuoteEnd() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		return r.EndQuote
+	})
+}
+
+func zcWordCompleter() js.Func {
+	return js.FuncOf(func(this js.Value, args []js.Value) any {
+		if len(args) != 2 {
+			panic("zcWordCompleter: invalid number of arguments")
+		}
+		line := args[0].String()
+		pos := args[1].Int()
+		prefix, candidates, suffix := r.WordCompleter(line, pos)
+		var jsCandidates []any
+		for _, c := range candidates {
+			jsCandidates = append(jsCandidates, c)
+		}
+		return map[string]any{
+			"prefix":     prefix,
+			"candidates": jsCandidates,
+			"suffix":     suffix,
+		}
+	})
+}
+
+func valueOf(item zc.Item) string {
+	return item.Val()
+}
+
+func main() {
+	c = app.NewCalc()
+	r = repl.New(c)
+
+	js.Global().Set("zcCommonPrefix", zcCommonPrefix())
+	js.Global().Set("zcEval", zcEval())
+	js.Global().Set("zcStack", zcStack())
+	js.Global().Set("zcStackLen", zcStackLen())
+	js.Global().Set("zcOpNames", zcOpNames())
+	js.Global().Set("zcSetStack", zcSetStack())
+	js.Global().Set("zcQuoteEnd", zcQuoteEnd())
+	js.Global().Set("zcWordCompleter", zcWordCompleter())
+
+	<-make(chan struct{})
+}
diff --git a/cmd/wasm/main_empty.go b/cmd/wasm/main_empty.go
@@ -0,0 +1,5 @@
+//go:build !js
+
+package main
+
+func main() {}
diff --git a/web/Inconsolata-Regular.ttf b/web/Inconsolata-Regular.ttf
diff --git a/web/index.html b/web/index.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8"/>
+    <link rel="stylesheet" type="text/css" href="zc.css">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+		<script src="wasm_exec.js"></script>
+		<script>
+			const go = new Go();
+			WebAssembly.instantiateStreaming(fetch("zc.wasm"), go.importObject).then((result) => {
+				go.run(result.instance);
+        init();
+			});
+		</script>
+    <meta name="google" content="notranslate">
+	</head>
+	<body>
+    <div id="main">
+      <div id="output-panel">
+        <div id="output"></div>
+      </div>
+      <div id="popup"></div>
+      <div id="footer-panel">
+        <div id="footer">
+          <label id="prompt" for="input">zc&nbsp;&gt;</label>
+          <textarea id="input" type="search" rows="1" autocorrect="off" autocapitalize="off" autocomplete="new-password"></textarea>
+          <button id="auto">?</button>
+        </div>
+      </div>
+    </div>
+    </div>
+  </body>
+  <script src="zc.js"></script>
+</html>